macro-assembler-arm.cc revision 257744e915dfc84d6d07a6b2accf8402d9ffc708
11e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// Copyright 2011 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 289ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick#include <limits.h> // For LONG_MIN, LONG_MAX. 299ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "v8.h" 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 32f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#if defined(V8_TARGET_ARCH_ARM) 33f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "bootstrapper.h" 358b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch#include "codegen.h" 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "debug.h" 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "runtime.h" 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 428b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochMacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size) 438b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch : Assembler(arg_isolate, buffer, size), 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block generating_stub_(false), 458b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch allow_stub_calls_(true) { 468b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (isolate() != NULL) { 478b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch code_object_ = Handle<Object>(isolate()->heap()->undefined_value(), 488b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch isolate()); 498b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch } 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We always generate arm code, never thumb code, even if V8 is compiled to 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// thumb, so we require inter-working support 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) && !defined(USE_THUMB_INTERWORK) 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#error "flag -mthumb-interwork missing" 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We do not support thumb inter-working with an arm architecture not supporting 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the blx instruction (below v5t). If you know what CPU you are compiling for 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// you can use -march=armv7 or similar. 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(USE_THUMB_INTERWORK) && !defined(CAN_USE_THUMB_INSTRUCTIONS) 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block# error "For thumb inter-working we require an architecture which supports blx" 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Using bx does not yield better code, so use it only when required 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(USE_THUMB_INTERWORK) 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define USE_BX 1 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(Register target, Condition cond) { 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(target, cond); 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target), LeaveCC, cond); 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(intptr_t target, RelocInfo::Mode rmode, 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 86257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(ip, Operand(target, rmode)); 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(ip, cond); 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target, rmode), LeaveCC, cond); 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(byte* target, RelocInfo::Mode rmode, 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!RelocInfo::IsCodeTarget(rmode)); 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(reinterpret_cast<intptr_t>(target), rmode, cond); 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(Handle<Code> code, RelocInfo::Mode rmode, 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsCodeTarget(rmode)); 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 'code' is always generated ARM code, never THUMB code 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 10944f0eee88ff00398ff7f715fab053374d808c90dSteve Blockint MacroAssembler::CallSize(Register target, Condition cond) { 11044f0eee88ff00398ff7f715fab053374d808c90dSteve Block#if USE_BLX 11144f0eee88ff00398ff7f715fab053374d808c90dSteve Block return kInstrSize; 11244f0eee88ff00398ff7f715fab053374d808c90dSteve Block#else 11344f0eee88ff00398ff7f715fab053374d808c90dSteve Block return 2 * kInstrSize; 11444f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 11544f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 11644f0eee88ff00398ff7f715fab053374d808c90dSteve Block 11744f0eee88ff00398ff7f715fab053374d808c90dSteve Block 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(Register target, Condition cond) { 11944f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Block constant pool for the call instruction sequence. 12044f0eee88ff00398ff7f715fab053374d808c90dSteve Block BlockConstPoolScope block_const_pool(this); 12144f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 12244f0eee88ff00398ff7f715fab053374d808c90dSteve Block int pre_position = pc_offset(); 12344f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 12444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BLX 126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block blx(target, cond); 127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // set lr for return at current pc + 8 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(lr, Operand(pc), LeaveCC, cond); 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target), LeaveCC, cond); 131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 13244f0eee88ff00398ff7f715fab053374d808c90dSteve Block 13344f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 13444f0eee88ff00398ff7f715fab053374d808c90dSteve Block int post_position = pc_offset(); 13544f0eee88ff00398ff7f715fab053374d808c90dSteve Block CHECK_EQ(pre_position + CallSize(target, cond), post_position); 13644f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 14044f0eee88ff00398ff7f715fab053374d808c90dSteve Blockint MacroAssembler::CallSize( 14144f0eee88ff00398ff7f715fab053374d808c90dSteve Block intptr_t target, RelocInfo::Mode rmode, Condition cond) { 14244f0eee88ff00398ff7f715fab053374d808c90dSteve Block int size = 2 * kInstrSize; 14344f0eee88ff00398ff7f715fab053374d808c90dSteve Block Instr mov_instr = cond | MOV | LeaveCC; 14444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (!Operand(target, rmode).is_single_instruction(mov_instr)) { 14544f0eee88ff00398ff7f715fab053374d808c90dSteve Block size += kInstrSize; 14644f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 14744f0eee88ff00398ff7f715fab053374d808c90dSteve Block return size; 14844f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 14944f0eee88ff00398ff7f715fab053374d808c90dSteve Block 15044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 151257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::Call(intptr_t target, 152257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch RelocInfo::Mode rmode, 153257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Condition cond) { 15444f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Block constant pool for the call instruction sequence. 15544f0eee88ff00398ff7f715fab053374d808c90dSteve Block BlockConstPoolScope block_const_pool(this); 15644f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 15744f0eee88ff00398ff7f715fab053374d808c90dSteve Block int pre_position = pc_offset(); 15844f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 15944f0eee88ff00398ff7f715fab053374d808c90dSteve Block 1606ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if USE_BLX 1616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // On ARMv5 and after the recommended call sequence is: 1626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // ldr ip, [pc, #...] 1636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // blx ip 1646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 16544f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Statement positions are expected to be recorded when the target 16644f0eee88ff00398ff7f715fab053374d808c90dSteve Block // address is loaded. The mov method will automatically record 16744f0eee88ff00398ff7f715fab053374d808c90dSteve Block // positions when pc is the target, since this is not the case here 16844f0eee88ff00398ff7f715fab053374d808c90dSteve Block // we have to do it explicitly. 16944f0eee88ff00398ff7f715fab053374d808c90dSteve Block positions_recorder()->WriteRecordedPositions(); 1706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 171257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(ip, Operand(target, rmode)); 17244f0eee88ff00398ff7f715fab053374d808c90dSteve Block blx(ip, cond); 1736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(kCallTargetAddressOffset == 2 * kInstrSize); 1756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set lr for return at current pc + 8. 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(lr, Operand(pc), LeaveCC, cond); 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ldr<cond> pc, [pc + offset of target in constant pool]. 179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target, rmode), LeaveCC, cond); 180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(kCallTargetAddressOffset == kInstrSize); 1816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 18244f0eee88ff00398ff7f715fab053374d808c90dSteve Block 18344f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 18444f0eee88ff00398ff7f715fab053374d808c90dSteve Block int post_position = pc_offset(); 18544f0eee88ff00398ff7f715fab053374d808c90dSteve Block CHECK_EQ(pre_position + CallSize(target, rmode, cond), post_position); 18644f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19044f0eee88ff00398ff7f715fab053374d808c90dSteve Blockint MacroAssembler::CallSize( 19144f0eee88ff00398ff7f715fab053374d808c90dSteve Block byte* target, RelocInfo::Mode rmode, Condition cond) { 19244f0eee88ff00398ff7f715fab053374d808c90dSteve Block return CallSize(reinterpret_cast<intptr_t>(target), rmode); 19344f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 19444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 19544f0eee88ff00398ff7f715fab053374d808c90dSteve Block 19644f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::Call( 19744f0eee88ff00398ff7f715fab053374d808c90dSteve Block byte* target, RelocInfo::Mode rmode, Condition cond) { 19844f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 19944f0eee88ff00398ff7f715fab053374d808c90dSteve Block int pre_position = pc_offset(); 20044f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 20144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!RelocInfo::IsCodeTarget(rmode)); 203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(reinterpret_cast<intptr_t>(target), rmode, cond); 20444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 20544f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 20644f0eee88ff00398ff7f715fab053374d808c90dSteve Block int post_position = pc_offset(); 20744f0eee88ff00398ff7f715fab053374d808c90dSteve Block CHECK_EQ(pre_position + CallSize(target, rmode, cond), post_position); 20844f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 21244f0eee88ff00398ff7f715fab053374d808c90dSteve Blockint MacroAssembler::CallSize( 21344f0eee88ff00398ff7f715fab053374d808c90dSteve Block Handle<Code> code, RelocInfo::Mode rmode, Condition cond) { 21444f0eee88ff00398ff7f715fab053374d808c90dSteve Block return CallSize(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 21544f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 21644f0eee88ff00398ff7f715fab053374d808c90dSteve Block 21744f0eee88ff00398ff7f715fab053374d808c90dSteve Block 218257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::CallWithAstId(Handle<Code> code, 219257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch RelocInfo::Mode rmode, 220257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch unsigned ast_id, 221257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Condition cond) { 222257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch#ifdef DEBUG 223257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int pre_position = pc_offset(); 224257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch#endif 225257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 226257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(rmode == RelocInfo::CODE_TARGET_WITH_ID); 227257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(ast_id != kNoASTId); 228257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(ast_id_for_reloc_info_ == kNoASTId); 229257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ast_id_for_reloc_info_ = ast_id; 230257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // 'code' is always generated ARM code, never THUMB code 231257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Call(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 232257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 233257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch#ifdef DEBUG 234257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int post_position = pc_offset(); 235257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CHECK_EQ(pre_position + CallSize(code, rmode, cond), post_position); 236257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch#endif 237257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 238257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 239257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 240257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::Call(Handle<Code> code, 241257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch RelocInfo::Mode rmode, 242257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Condition cond) { 24344f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 24444f0eee88ff00398ff7f715fab053374d808c90dSteve Block int pre_position = pc_offset(); 24544f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 24644f0eee88ff00398ff7f715fab053374d808c90dSteve Block 247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsCodeTarget(rmode)); 248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 'code' is always generated ARM code, never THUMB code 249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 25044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 25144f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 25244f0eee88ff00398ff7f715fab053374d808c90dSteve Block int post_position = pc_offset(); 25344f0eee88ff00398ff7f715fab053374d808c90dSteve Block CHECK_EQ(pre_position + CallSize(code, rmode, cond), post_position); 25444f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Ret(Condition cond) { 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(lr, cond); 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(lr), LeaveCC, cond); 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 267e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Drop(int count, Condition cond) { 268e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke if (count > 0) { 269e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(count * kPointerSize), LeaveCC, cond); 270e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke } 271e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 272e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 273e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 274b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::Ret(int drop, Condition cond) { 275b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Drop(drop, cond); 276b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Ret(cond); 277b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 278b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 279b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2807f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::Swap(Register reg1, 2817f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register reg2, 2827f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 2837f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Condition cond) { 2846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (scratch.is(no_reg)) { 2857f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 2867f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg2, reg2, Operand(reg1), LeaveCC, cond); 2877f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 2886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 2897f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(scratch, reg1, LeaveCC, cond); 2907f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg1, reg2, LeaveCC, cond); 2917f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg2, scratch, LeaveCC, cond); 2926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 2936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 296e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Call(Label* target) { 297e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke bl(target); 298e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 299e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 300e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 301e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Move(Register dst, Handle<Object> value) { 302e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(dst, Operand(value)); 303e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 304d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 305d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 3066ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::Move(Register dst, Register src) { 3076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (!dst.is(src)) { 3086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(dst, src); 3096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 3106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 313257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::Move(DoubleRegister dst, DoubleRegister src) { 314257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(CpuFeatures::IsSupported(VFP3)); 315257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CpuFeatures::Scope scope(VFP3); 316257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (!dst.is(src)) { 317257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(dst, src); 318257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 319257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 320257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 321257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3229dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::And(Register dst, Register src1, const Operand& src2, 3239dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 3243e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu if (!src2.is_reg() && 3253e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu !src2.must_use_constant_pool() && 3263e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu src2.immediate() == 0) { 3279ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dst, Operand(0, RelocInfo::NONE), LeaveCC, cond); 3283e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 3293e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu } else if (!src2.is_single_instruction() && 3303e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu !src2.must_use_constant_pool() && 3318b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch CpuFeatures::IsSupported(ARMv7) && 3323e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu IsPowerOf2(src2.immediate() + 1)) { 3333e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu ubfx(dst, src1, 0, WhichPowerOf2(src2.immediate() + 1), cond); 3343e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 3353e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu } else { 3363e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu and_(dst, src1, src2, LeaveCC, cond); 3379dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 3389dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 3399dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3409dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3419dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Ubfx(Register dst, Register src1, int lsb, int width, 3429dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 3439dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 3448b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (!CpuFeatures::IsSupported(ARMv7)) { 3459dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 3469dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 3479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (lsb != 0) { 3489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSR, lsb), LeaveCC, cond); 3499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 3509dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 3519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ubfx(dst, src1, lsb, width, cond); 3529dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 3539dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 3549dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3559dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Sbfx(Register dst, Register src1, int lsb, int width, 3579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 3589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 3598b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (!CpuFeatures::IsSupported(ARMv7)) { 3609dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 3619dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 3629dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_up = 32 - lsb - width; 3639dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_down = lsb + shift_up; 3649dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_up != 0) { 3659dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSL, shift_up), LeaveCC, cond); 3669dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 3679dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_down != 0) { 3689dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, ASR, shift_down), LeaveCC, cond); 3699dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 3709dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 3719dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen sbfx(dst, src1, lsb, width, cond); 3729dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 3739dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 3749dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3759dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 376e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::Bfi(Register dst, 377e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register src, 378e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register scratch, 379e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int lsb, 380e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int width, 381e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Condition cond) { 382e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(0 <= lsb && lsb < 32); 383e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(0 <= width && width < 32); 384e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(lsb + width < 32); 385e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(!scratch.is(dst)); 386e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (width == 0) return; 3878b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (!CpuFeatures::IsSupported(ARMv7)) { 388e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 389e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bic(dst, dst, Operand(mask)); 390e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch and_(scratch, src, Operand((1 << width) - 1)); 391e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(scratch, Operand(scratch, LSL, lsb)); 392e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch orr(dst, dst, scratch); 393e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } else { 394e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bfi(dst, src, lsb, width, cond); 395e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 396e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 397e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 398e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 3999dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Bfc(Register dst, int lsb, int width, Condition cond) { 4009dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 4018b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (!CpuFeatures::IsSupported(ARMv7)) { 4029dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 4039dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bic(dst, dst, Operand(mask)); 4049dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 4059dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bfc(dst, lsb, width, cond); 4069dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 4079dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 4089dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 4099dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 41050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsenvoid MacroAssembler::Usat(Register dst, int satpos, const Operand& src, 41150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Condition cond) { 4128b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (!CpuFeatures::IsSupported(ARMv7)) { 41350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(!dst.is(pc) && !src.rm().is(pc)); 41450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((satpos >= 0) && (satpos <= 31)); 41550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 41650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // These asserts are required to ensure compatibility with the ARMv7 41750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // implementation. 41850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((src.shift_op() == ASR) || (src.shift_op() == LSL)); 41950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(src.rs().is(no_reg)); 42050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 42150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Label done; 42250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen int satval = (1 << satpos) - 1; 42350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 42450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (cond != al) { 42550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(NegateCondition(cond), &done); // Skip saturate if !condition. 42650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 42750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!(src.is_reg() && dst.is(src.rm()))) { 42850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, src); 42950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 43050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen tst(dst, Operand(~satval)); 43150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(eq, &done); 4329ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dst, Operand(0, RelocInfo::NONE), LeaveCC, mi); // 0 if negative. 43350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, Operand(satval), LeaveCC, pl); // satval if positive. 43450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen bind(&done); 43550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } else { 43650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen usat(dst, satpos, src, cond); 43750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 43850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen} 43950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 44050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { 442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Empty the const pool. 443a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CheckConstPool(true, true); 444a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(pc, pc, Operand(index, 445a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LSL, 4461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Instruction::kInstrSizeLog2 - kSmiTagSize)); 447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); 448a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block nop(); // Jump table alignment. 449a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < targets.length(); i++) { 450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(targets[i]); 451a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 452a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 453a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 454a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 455a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LoadRoot(Register destination, 456a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Heap::RootListIndex index, 457a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 4583100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(destination, MemOperand(roots, index << kPointerSizeLog2), cond); 459a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 460a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 461a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 46225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsenvoid MacroAssembler::StoreRoot(Register source, 46325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Heap::RootListIndex index, 46425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Condition cond) { 46525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen str(source, MemOperand(roots, index << kPointerSizeLog2), cond); 46625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen} 46725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 46825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 4696ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::RecordWriteHelper(Register object, 4708defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 4718defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 47244f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 4736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Check that the object is not in new space. 4746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label not_in_new_space; 4758defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, ne, ¬_in_new_space); 4766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Abort("new-space object passed to RecordWriteHelper"); 4776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(¬_in_new_space); 4786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 4794515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 4807f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Calculate page address. 4819dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Bfc(object, 0, kPageSizeBits); 4829dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 4839dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Calculate region number. 4848defd9ff6930b4e24729971a61cf7469daf119beSteve Block Ubfx(address, address, Page::kRegionSizeLog2, 4859dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen kPageSizeBits - Page::kRegionSizeLog2); 486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4877f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Mark region dirty. 4888defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(1)); 4908defd9ff6930b4e24729971a61cf7469daf119beSteve Block orr(scratch, scratch, Operand(ip, LSL, address)); 4918defd9ff6930b4e24729971a61cf7469daf119beSteve Block str(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 4926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 4936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 4946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 4956ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InNewSpace(Register object, 4966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 4971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Condition cond, 4986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* branch) { 4991e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(cond == eq || cond == ne); 50044f0eee88ff00398ff7f715fab053374d808c90dSteve Block and_(scratch, object, Operand(ExternalReference::new_space_mask(isolate()))); 50144f0eee88ff00398ff7f715fab053374d808c90dSteve Block cmp(scratch, Operand(ExternalReference::new_space_start(isolate()))); 5021e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(cond, branch); 5036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 5046ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Will clobber 4 registers: object, offset, scratch, ip. The 5076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// register 'object' contains a heap object pointer. The heap object 5086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// tag is shifted away. 5099dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::RecordWrite(Register object, 5109dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Operand offset, 5119dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch0, 5129dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch1) { 5136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The compiled code assumes that record write doesn't change the 5146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // context register, so we check that none of the clobbered 5156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // registers are cp. 5169dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(!object.is(cp) && !scratch0.is(cp) && !scratch1.is(cp)); 5176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label done; 5196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // First, test that the object is not in the new space. We cannot set 5217f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // region marks for new space pages. 5229dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen InNewSpace(object, scratch0, eq, &done); 5236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5248defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Add offset into the object. 5258defd9ff6930b4e24729971a61cf7469daf119beSteve Block add(scratch0, object, offset); 5268defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Record the actual write. 5288defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, scratch0, scratch1); 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 5314515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 5324515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // Clobber all input registers when running with the debug-code flag 5334515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // turned on to provoke errors. 53444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 5356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 5369dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch0, Operand(BitCast<int32_t>(kZapValue))); 5379dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch1, Operand(BitCast<int32_t>(kZapValue))); 5384515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke } 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5428defd9ff6930b4e24729971a61cf7469daf119beSteve Block// Will clobber 4 registers: object, address, scratch, ip. The 5438defd9ff6930b4e24729971a61cf7469daf119beSteve Block// register 'object' contains a heap object pointer. The heap object 5448defd9ff6930b4e24729971a61cf7469daf119beSteve Block// tag is shifted away. 5458defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::RecordWrite(Register object, 5468defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 5478defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 5488defd9ff6930b4e24729971a61cf7469daf119beSteve Block // The compiled code assumes that record write doesn't change the 5498defd9ff6930b4e24729971a61cf7469daf119beSteve Block // context register, so we check that none of the clobbered 5508defd9ff6930b4e24729971a61cf7469daf119beSteve Block // registers are cp. 5518defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!object.is(cp) && !address.is(cp) && !scratch.is(cp)); 5528defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5538defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 5548defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5558defd9ff6930b4e24729971a61cf7469daf119beSteve Block // First, test that the object is not in the new space. We cannot set 5568defd9ff6930b4e24729971a61cf7469daf119beSteve Block // region marks for new space pages. 5578defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, eq, &done); 5588defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5598defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Record the actual write. 5608defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, address, scratch); 5618defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5628defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 5638defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5648defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Clobber all input registers when running with the debug-code flag 5658defd9ff6930b4e24729971a61cf7469daf119beSteve Block // turned on to provoke errors. 56644f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 5678defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 5688defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(address, Operand(BitCast<int32_t>(kZapValue))); 5698defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch, Operand(BitCast<int32_t>(kZapValue))); 5708defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 5718defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 5728defd9ff6930b4e24729971a61cf7469daf119beSteve Block 5738defd9ff6930b4e24729971a61cf7469daf119beSteve Block 574b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// Push and pop all registers that can hold pointers. 575b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::PushSafepointRegisters() { 576b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Safepoints expect a block of contiguous register values starting with r0: 577b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(((1 << kNumSafepointSavedRegisters) - 1) == kSafepointSavedRegisters); 578b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Safepoints expect a block of kNumSafepointRegisters values on the 579b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // stack, so adjust the stack for unsaved registers. 580b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; 581b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(num_unsaved >= 0); 582b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch sub(sp, sp, Operand(num_unsaved * kPointerSize)); 583b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch stm(db_w, sp, kSafepointSavedRegisters); 584b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 585b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 586b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 587b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::PopSafepointRegisters() { 588b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; 589b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldm(ia_w, sp, kSafepointSavedRegisters); 590b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(sp, sp, Operand(num_unsaved * kPointerSize)); 591b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 592b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 593b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 594b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::PushSafepointRegistersAndDoubles() { 595b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch PushSafepointRegisters(); 596b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch sub(sp, sp, Operand(DwVfpRegister::kNumAllocatableRegisters * 597b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch kDoubleSize)); 598b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch for (int i = 0; i < DwVfpRegister::kNumAllocatableRegisters; i++) { 599b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vstr(DwVfpRegister::FromAllocationIndex(i), sp, i * kDoubleSize); 600b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 601b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 602b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 603b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 604b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::PopSafepointRegistersAndDoubles() { 605b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch for (int i = 0; i < DwVfpRegister::kNumAllocatableRegisters; i++) { 606b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vldr(DwVfpRegister::FromAllocationIndex(i), sp, i * kDoubleSize); 607b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 608b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch add(sp, sp, Operand(DwVfpRegister::kNumAllocatableRegisters * 609b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch kDoubleSize)); 610b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch PopSafepointRegisters(); 611b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 612b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 613e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::StoreToSafepointRegistersAndDoublesSlot(Register src, 614e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register dst) { 615e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(src, SafepointRegistersAndDoublesSlot(dst)); 6161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 6171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 6181e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 619e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::StoreToSafepointRegisterSlot(Register src, Register dst) { 620e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(src, SafepointRegisterSlot(dst)); 6211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 6221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 6231e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 624e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { 625e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(dst, SafepointRegisterSlot(src)); 6261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 6271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 6281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 629b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochint MacroAssembler::SafepointRegisterStackIndex(int reg_code) { 630b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The registers are pushed starting with the highest encoding, 631b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // which means that lowest encodings are closest to the stack pointer. 632b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(reg_code >= 0 && reg_code < kNumSafepointRegisters); 633b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return reg_code; 634b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 635b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 636b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 6371e0659c275bb392c045087af4f6b0d7565cb3d77Steve BlockMemOperand MacroAssembler::SafepointRegisterSlot(Register reg) { 6381e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return MemOperand(sp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); 6391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 6401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 6411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 6421e0659c275bb392c045087af4f6b0d7565cb3d77Steve BlockMemOperand MacroAssembler::SafepointRegistersAndDoublesSlot(Register reg) { 6431e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // General purpose registers are pushed last on the stack. 6441e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int doubles_size = DwVfpRegister::kNumAllocatableRegisters * kDoubleSize; 6451e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int register_offset = SafepointRegisterStackIndex(reg.code()) * kPointerSize; 6461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return MemOperand(sp, doubles_size + register_offset); 6471e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 6481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 6491e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 650f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Ldrd(Register dst1, Register dst2, 651f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& src, Condition cond) { 652f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(src.rm().is(no_reg)); 653f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!dst1.is(lr)); // r14. 654f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, dst1.code() % 2); 655f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(dst1.code() + 1, dst2.code()); 656f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 657f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two ldr instructions if ldrd is not available. 6588b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (CpuFeatures::IsSupported(ARMv7)) { 659f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 660f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldrd(dst1, dst2, src, cond); 661f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 662f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand src2(src); 663f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke src2.set_offset(src2.offset() + 4); 664f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (dst1.is(src.rn())) { 665f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 666f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 667f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 668f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 669f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 670f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 671f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 672f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 673f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 674f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 675f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Strd(Register src1, Register src2, 676f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& dst, Condition cond) { 677f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(dst.rm().is(no_reg)); 678f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!src1.is(lr)); // r14. 679f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, src1.code() % 2); 680f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(src1.code() + 1, src2.code()); 681f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 682f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two str instructions if strd is not available. 6838b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (CpuFeatures::IsSupported(ARMv7)) { 684f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 685f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke strd(src1, src2, dst, cond); 686f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 687f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand dst2(dst); 688f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke dst2.set_offset(dst2.offset() + 4); 689f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src1, dst, cond); 690f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src2, dst2, cond); 691f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 692f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 693f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 694f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 695b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::ClearFPSCRBits(const uint32_t bits_to_clear, 696b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Register scratch, 697b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Condition cond) { 698b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vmrs(scratch, cond); 699b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch bic(scratch, scratch, Operand(bits_to_clear), LeaveCC, cond); 700b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vmsr(scratch, cond); 701b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 702b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 703b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 704b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::VFPCompareAndSetFlags(const DwVfpRegister src1, 705b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const DwVfpRegister src2, 706b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Condition cond) { 707b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Compare and move FPSCR flags to the normal condition flags. 708b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch VFPCompareAndLoadFlags(src1, src2, pc, cond); 709b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 710b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 711b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::VFPCompareAndSetFlags(const DwVfpRegister src1, 712b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const double src2, 713b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Condition cond) { 714b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Compare and move FPSCR flags to the normal condition flags. 715b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch VFPCompareAndLoadFlags(src1, src2, pc, cond); 716b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 717b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 718b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 719b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::VFPCompareAndLoadFlags(const DwVfpRegister src1, 720b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const DwVfpRegister src2, 721b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Register fpscr_flags, 722b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Condition cond) { 723b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Compare and load FPSCR. 724b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vcmp(src1, src2, cond); 725b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vmrs(fpscr_flags, cond); 726b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 727b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 728b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid MacroAssembler::VFPCompareAndLoadFlags(const DwVfpRegister src1, 729b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const double src2, 730b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Register fpscr_flags, 731b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const Condition cond) { 732b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Compare and load FPSCR. 733b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vcmp(src1, src2, cond); 734b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch vmrs(fpscr_flags, cond); 735086aeeaae12517475c22695a200be45495516549Ben Murdoch} 736086aeeaae12517475c22695a200be45495516549Ben Murdoch 737086aeeaae12517475c22695a200be45495516549Ben Murdoch 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::EnterFrame(StackFrame::Type type) { 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0-r3: preserved 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, cp.bit() | fp.bit() | lr.bit()); 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(Smi::FromInt(type))); 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(CodeObject())); 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(fp, sp, Operand(3 * kPointerSize)); // Adjust FP to point to saved FP. 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LeaveFrame(StackFrame::Type type) { 750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: preserved 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: preserved 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: preserved 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Drop the execution stack down to the frame pointer and restore 755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the caller frame pointer and return address. 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, fp); 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia_w, sp, fp.bit() | lr.bit()); 758a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { 7621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Setup the frame structure on the stack. 7631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT_EQ(2 * kPointerSize, ExitFrameConstants::kCallerSPDisplacement); 7641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT_EQ(1 * kPointerSize, ExitFrameConstants::kCallerPCOffset); 7651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT_EQ(0 * kPointerSize, ExitFrameConstants::kCallerFPOffset); 7661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Push(lr, fp); 767402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(fp, Operand(sp)); // Setup new frame pointer. 7681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Reserve room for saved entry sp and code object. 7691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block sub(sp, sp, Operand(2 * kPointerSize)); 77044f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 7711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(ip, Operand(0)); 7721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(ip, MemOperand(fp, ExitFrameConstants::kSPOffset)); 7731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 774402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(ip, Operand(CodeObject())); 7751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(ip, MemOperand(fp, ExitFrameConstants::kCodeOffset)); 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the frame pointer and the context in top. 77844f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(ip, Operand(ExternalReference(Isolate::k_c_entry_fp_address, isolate()))); 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(fp, MemOperand(ip)); 78044f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(ip, Operand(ExternalReference(Isolate::k_context_address, isolate()))); 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(cp, MemOperand(ip)); 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 783b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Optionally save all double registers. 784b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (save_doubles) { 7858b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch DwVfpRegister first = d0; 7868b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch DwVfpRegister last = 7878b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch DwVfpRegister::from_code(DwVfpRegister::kNumRegisters - 1); 7888b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch vstm(db_w, sp, first, last); 7891e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Note that d0 will be accessible at 7901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // fp - 2 * kPointerSize - DwVfpRegister::kNumRegisters * kDoubleSize, 7911e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // since the sp slot and code slot were pushed after the fp. 792b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 7931e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 7941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Reserve place for the return address and stack space and align the frame 7951e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // preparing for calling the runtime function. 7961e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const int frame_alignment = MacroAssembler::ActivationFrameAlignment(); 7971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block sub(sp, sp, Operand((stack_space + 1) * kPointerSize)); 7981e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (frame_alignment > 0) { 7991e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(IsPowerOf2(frame_alignment)); 8001e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block and_(sp, sp, Operand(-frame_alignment)); 8011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 8021e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 8031e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Set the exit frame sp value to point just before the return address 8041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // location. 8051e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(ip, sp, Operand(kPointerSize)); 8061e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(ip, MemOperand(fp, ExitFrameConstants::kSPOffset)); 807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 809a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 8106ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InitializeNewString(Register string, 8116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register length, 8126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::RootListIndex map_index, 8136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 8146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2) { 8156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(length, LSL, kSmiTagSize)); 8166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block LoadRoot(scratch2, map_index); 8176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kLengthOffset)); 8186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(String::kEmptyHashField)); 8196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); 8206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); 8216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 8226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 8236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 8246ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockint MacroAssembler::ActivationFrameAlignment() { 825a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(V8_HOST_ARCH_ARM) 826a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Running on the real platform. Use the alignment as mandated by the local 827a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // environment. 828a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: This will break if we ever start generating snapshots on one ARM 829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // platform for another ARM platform with a different alignment. 8306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return OS::ActivationFrameAlignment(); 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else // defined(V8_HOST_ARCH_ARM) 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we are using the simulator then we should always align to the expected 833a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // alignment. As the simulator is used to generate snapshots we do not know 8346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // if the target platform will need alignment, so this is controlled from a 8356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // flag. 8366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return FLAG_sim_stack_alignment; 837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // defined(V8_HOST_ARCH_ARM) 838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 840a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 841e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::LeaveExitFrame(bool save_doubles, 842e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register argument_count) { 843b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Optionally restore all double registers. 844b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (save_doubles) { 8458b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch // Calculate the stack location of the saved doubles and restore them. 8468b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch const int offset = 2 * kPointerSize; 8478b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch sub(r3, fp, Operand(offset + DwVfpRegister::kNumRegisters * kDoubleSize)); 8488b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch DwVfpRegister first = d0; 8498b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch DwVfpRegister last = 8508b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch DwVfpRegister::from_code(DwVfpRegister::kNumRegisters - 1); 8518b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch vldm(ia, r3, first, last); 852b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 853b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Clear top frame. 8559ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(r3, Operand(0, RelocInfo::NONE)); 85644f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(ip, Operand(ExternalReference(Isolate::k_c_entry_fp_address, isolate()))); 857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore current context from top and clear it in debug mode. 86044f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(ip, Operand(ExternalReference(Isolate::k_context_address, isolate()))); 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, MemOperand(ip)); 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 866e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Tear down the exit frame, pop the arguments, and return. 8671e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(sp, Operand(fp)); 8681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldm(ia_w, sp, fp.bit() | lr.bit()); 869e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (argument_count.is_valid()) { 870e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch add(sp, sp, Operand(argument_count, LSL, kPointerSizeLog2)); 871e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 872e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 873e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 874e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::GetCFunctionDoubleResult(const DoubleRegister dst) { 875257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (use_eabi_hardfloat()) { 876257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(dst, d0); 877257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 878257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(dst, r0, r1); 879257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 880257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 881257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 882257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 883257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::SetCallKind(Register dst, CallKind call_kind) { 884257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // This macro takes the dst register to make the code more readable 885257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // at the call sites. However, the dst register has to be r5 to 886257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // follow the calling convention which requires the call type to be 887257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // in r5. 888257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(dst.is(r5)); 889257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (call_kind == CALL_AS_FUNCTION) { 890257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(dst, Operand(Smi::FromInt(1))); 891257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 892257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(dst, Operand(Smi::FromInt(0))); 893257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokePrologue(const ParameterCount& expected, 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> code_constant, 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg, 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* done, 902b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch InvokeFlag flag, 903257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch const CallWrapper& call_wrapper, 904257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallKind call_kind) { 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool definitely_matches = false; 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label regular_invoke; 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether the expected and actual arguments count match. If not, 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setup registers according to contract with ArgumentsAdaptorTrampoline: 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: actual arguments count 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: function (passed through to callee) 912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: expected arguments count 913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r3: callee code entry 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The code below is made a lot easier because the calling code already sets 916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // up actual and expected registers according to the contract if values are 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // passed in registers. 918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate() || actual.reg().is(r0)); 919a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(expected.is_immediate() || expected.reg().is(r2)); 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((!code_constant.is_null() && code_reg.is(no_reg)) || code_reg.is(r3)); 921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.is_immediate()) { 923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate()); 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == actual.immediate()) { 925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 926a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == sentinel) { 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Don't worry about adapting arguments for builtins that 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // don't want that done. Skip adaption code by making it look 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // like we have a match between expected and actual number of 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments. 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r2, Operand(expected.immediate())); 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 938a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 939a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 940a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (actual.is_immediate()) { 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.immediate())); 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.reg())); 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!definitely_matches) { 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!code_constant.is_null()) { 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(code_constant)); 953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> adaptor = 95744f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate()->builtins()->ArgumentsAdaptorTrampoline(); 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 959257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper.BeforeCall(CallSize(adaptor, RelocInfo::CODE_TARGET)); 960257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, call_kind); 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(adaptor, RelocInfo::CODE_TARGET); 962257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper.AfterCall(); 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(done); 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 965257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, call_kind); 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(adaptor, RelocInfo::CODE_TARGET); 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(®ular_invoke); 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Register code, 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 976b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch InvokeFlag flag, 977257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch const CallWrapper& call_wrapper, 978257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallKind call_kind) { 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 981b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag, 982257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper, call_kind); 983a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 984257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper.BeforeCall(CallSize(code)); 985257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, call_kind); 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code); 987257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper.AfterCall(); 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flag == JUMP_FUNCTION); 990257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, call_kind); 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code); 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 997a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Handle<Code> code, 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode, 1004257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokeFlag flag, 1005257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallKind call_kind) { 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1008257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokePrologue(expected, actual, code, no_reg, &done, flag, 1009257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch NullCallWrapper(), call_kind); 1010a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 1011257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, call_kind); 1012a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code, rmode); 1013a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1014257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, call_kind); 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code, rmode); 1016a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1018a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 1019a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 1020a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1022a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeFunction(Register fun, 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 1026b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch InvokeFlag flag, 1027257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch const CallWrapper& call_wrapper, 1028257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallKind call_kind) { 1029a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Contract with called JS functions requires that function is passed in r1. 1030a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(fun.is(r1)); 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register expected_reg = r2; 1033a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg = r3; 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(expected_reg, 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(code_reg, 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SharedFunctionInfo::kFormalParameterCountOffset)); 10407f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(expected_reg, Operand(expected_reg, ASR, kSmiTagSize)); 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, 1042791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ParameterCount expected(expected_reg); 1045257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokeCode(code_reg, expected, actual, flag, call_wrapper, call_kind); 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1049402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::InvokeFunction(JSFunction* function, 1050402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu const ParameterCount& actual, 1051257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokeFlag flag, 1052257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallKind call_kind) { 1053402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(function->is_compiled()); 1054402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1055402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Get the function and setup the context. 1056402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(Handle<JSFunction>(function))); 1057402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 1058402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1059402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Invoke the cached code. 1060402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Handle<Code> code(function->code()); 1061402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ParameterCount expected(function->shared()->formal_parameter_count()); 1062b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (V8::UseCrankshaft()) { 1063b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // TODO(kasperl): For now, we always call indirectly through the 1064b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // code field in the function to allow recompilation to take effect 1065b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // without changing any of the call sites. 1066b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(r3, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 1067257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokeCode(r3, expected, actual, flag, NullCallWrapper(), call_kind); 1068b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 1069257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag, call_kind); 1070b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1071b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 1072b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1073b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1074b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::IsObjectJSObjectType(Register heap_object, 1075b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register map, 1076b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register scratch, 1077b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label* fail) { 1078b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(map, FieldMemOperand(heap_object, HeapObject::kMapOffset)); 1079b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch IsInstanceJSObjectType(map, scratch, fail); 1080b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 1081b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1082b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1083b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::IsInstanceJSObjectType(Register map, 1084b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register scratch, 1085b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label* fail) { 1086b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldrb(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); 1087b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch, Operand(FIRST_JS_OBJECT_TYPE)); 1088b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch b(lt, fail); 1089b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch, Operand(LAST_JS_OBJECT_TYPE)); 1090b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch b(gt, fail); 1091b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 1092b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1093b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1094b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::IsObjectJSStringType(Register object, 1095e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register scratch, 1096e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Label* fail) { 1097b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(kNotStringTag != 0); 1098b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1099b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); 1100b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); 1101b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch tst(scratch, Operand(kIsNotStringMask)); 11021e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(ne, fail); 1103402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 1104402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1105402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 110680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef ENABLE_DEBUGGER_SUPPORT 1107402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::DebugBreak() { 1108402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(allow_stub_calls()); 11099ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(r0, Operand(0, RelocInfo::NONE)); 111044f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r1, Operand(ExternalReference(Runtime::kDebugBreak, isolate()))); 1111402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub ces(1); 1112402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); 1113402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 1114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::PushTryHandler(CodeLocation try_location, 1118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block HandlerType type) { 1119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adjust this code if not the case. 1120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); 1121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The pc (return address) is passed in register lr. 1122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (try_location == IN_JAVASCRIPT) { 1123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (type == TRY_CATCH_HANDLER) { 1124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_CATCH)); 1125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_FINALLY)); 1127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 1129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 1130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 1131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r3.bit() | fp.bit() | lr.bit()); 1132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 113344f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r3, Operand(ExternalReference(Isolate::k_handler_address, isolate()))); 1134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r1, MemOperand(r3)); 1135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 1136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r1); 1137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 1138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r3)); 1139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Must preserve r0-r4, r5-r7 are available. 1141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(try_location == IN_JS_ENTRY); 1142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The frame pointer does not point to a JS frame so we save NULL 1143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for fp. We expect the code throwing an exception to check fp 1144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // before dereferencing it to restore the context. 11459ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(ip, Operand(0, RelocInfo::NONE)); // To save a NULL frame pointer. 1146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r6, Operand(StackHandler::ENTRY)); 1147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 1148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 1149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 1150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r6.bit() | ip.bit() | lr.bit()); 1151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 115244f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r7, Operand(ExternalReference(Isolate::k_handler_address, isolate()))); 1153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r6, MemOperand(r7)); 1154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 1155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r6); 1156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 1157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r7)); 1158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1162e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::PopTryHandler() { 1163e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke ASSERT_EQ(0, StackHandlerConstants::kNextOffset); 1164e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke pop(r1); 116544f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(ip, Operand(ExternalReference(Isolate::k_handler_address, isolate()))); 1166e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); 1167e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke str(r1, MemOperand(ip)); 1168e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 1169e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 1170e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 1171e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::Throw(Register value) { 1172e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // r0 is expected to hold the exception. 1173e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (!value.is(r0)) { 1174e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(r0, value); 1175e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1176e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1177e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Adjust this code if not the case. 1178e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); 1179e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1180e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Drop the sp to the top of the handler. 118144f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r3, Operand(ExternalReference(Isolate::k_handler_address, isolate()))); 1182e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(sp, MemOperand(r3)); 1183e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1184e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Restore the next handler and frame pointer, discard handler state. 1185e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); 1186e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch pop(r2); 1187e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(r2, MemOperand(r3)); 1188e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kFPOffset == 2 * kPointerSize); 1189e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldm(ia_w, sp, r3.bit() | fp.bit()); // r3: discarded state. 1190e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1191e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Before returning we restore the context from the frame pointer if 1192e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // not NULL. The frame pointer is NULL in the exception handler of a 1193e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // JS entry frame. 1194e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(fp, Operand(0, RelocInfo::NONE)); 1195e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set cp to NULL if fp is NULL. 1196e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(cp, Operand(0, RelocInfo::NONE), LeaveCC, eq); 1197e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Restore cp otherwise. 1198e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset), ne); 1199e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#ifdef DEBUG 120044f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1201e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(lr, Operand(pc)); 1202e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1203e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#endif 1204e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize); 1205e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch pop(pc); 1206e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 1207e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1208e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1209e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::ThrowUncatchable(UncatchableExceptionType type, 1210e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register value) { 1211e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Adjust this code if not the case. 1212e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); 1213e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1214e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // r0 is expected to hold the exception. 1215e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (!value.is(r0)) { 1216e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(r0, value); 1217e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1218e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1219e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Drop sp to the top stack handler. 122044f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r3, Operand(ExternalReference(Isolate::k_handler_address, isolate()))); 1221e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(sp, MemOperand(r3)); 1222e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1223e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Unwind the handlers until the ENTRY handler is found. 1224e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Label loop, done; 1225e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&loop); 1226e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Load the type of the current stack handler. 1227e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const int kStateOffset = StackHandlerConstants::kStateOffset; 1228e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(r2, MemOperand(sp, kStateOffset)); 1229e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(r2, Operand(StackHandler::ENTRY)); 1230e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(eq, &done); 1231e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Fetch the next handler in the list. 1232e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const int kNextOffset = StackHandlerConstants::kNextOffset; 1233e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(sp, MemOperand(sp, kNextOffset)); 1234e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch jmp(&loop); 1235e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&done); 1236e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1237e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set the top handler address to next handler past the current ENTRY handler. 1238e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); 1239e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch pop(r2); 1240e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(r2, MemOperand(r3)); 1241e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1242e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (type == OUT_OF_MEMORY) { 1243e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set external caught exception to false. 124444f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference external_caught( 124544f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate::k_external_caught_exception_address, isolate()); 1246e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(r0, Operand(false, RelocInfo::NONE)); 1247e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(r2, Operand(external_caught)); 1248e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(r0, MemOperand(r2)); 1249e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1250e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set pending exception and r0 to out of memory exception. 1251e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Failure* out_of_memory = Failure::OutOfMemoryException(); 1252e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(r0, Operand(reinterpret_cast<int32_t>(out_of_memory))); 125344f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r2, Operand(ExternalReference(Isolate::k_pending_exception_address, 125444f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate()))); 1255e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(r0, MemOperand(r2)); 1256e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1257e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1258e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Stack layout at this point. See also StackHandlerConstants. 1259e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // sp -> state (ENTRY) 1260e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // fp 1261e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // lr 1262e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1263e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Discard handler state (r2 is not used) and restore frame pointer. 1264e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kFPOffset == 2 * kPointerSize); 1265e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldm(ia_w, sp, r2.bit() | fp.bit()); // r2: discarded state. 1266e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Before returning we restore the context from the frame pointer if 1267e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // not NULL. The frame pointer is NULL in the exception handler of a 1268e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // JS entry frame. 1269e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(fp, Operand(0, RelocInfo::NONE)); 1270e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set cp to NULL if fp is NULL. 1271e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(cp, Operand(0, RelocInfo::NONE), LeaveCC, eq); 1272e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Restore cp otherwise. 1273e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset), ne); 1274e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#ifdef DEBUG 127544f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1276e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(lr, Operand(pc)); 1277e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1278e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#endif 1279e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize); 1280e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch pop(pc); 1281e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 1282e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1283e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, 1285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 1286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 1287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label same_contexts; 1288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(scratch)); 1290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(ip)); 1291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch.is(ip)); 1292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load current lexical context from the stack frame. 1294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // In debug mode, make sure the lexical context is set. 1296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 12979ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch, Operand(0, RelocInfo::NONE)); 1298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "we should not have an empty lexical context"); 1299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load the global context of the current context. 1302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; 1303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, offset)); 1304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, GlobalObject::kGlobalContextOffset)); 1305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 130744f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 1309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 1310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 1311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 1312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Read the first word and compare to the global_context_map. 1313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); 1314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 1315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 1316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 1317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 1318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if both contexts are the same. 1321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 1322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 1323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, &same_contexts); 1324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 132644f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 1328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 1329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 1330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 1331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(holder_reg, ip); // Move ip to its holding place. 1332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kNullValueRootIndex); 1333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 1334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "JSGlobalProxy::context() should not be null."); 1335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); 1337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 1338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 1339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 1340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip is not needed. ip is reloaded below. 1341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 1342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip to holder's context. 1343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 1344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the security token in the calling global object is 1347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // compatible with the security token in the receiving global 1348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // object. 1349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int token_offset = Context::kHeaderSize + 1350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Context::SECURITY_TOKEN_INDEX * kPointerSize; 1351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, token_offset)); 1353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(ip, token_offset)); 1354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 1355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 1356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&same_contexts); 1358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(int object_size, 1362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 1364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 1365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 1366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 13675913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!FLAG_inline_new) { 136844f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 13695913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // Trash the registers to simulate an allocation failure. 13705913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(result, Operand(0x7091)); 13715913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch1, Operand(0x7191)); 13725913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch2, Operand(0x7291)); 13735913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 13745913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck jmp(gc_required); 13755913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck return; 13765913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 13775913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 1378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 1379b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!result.is(scratch2)); 1380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 1381e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(!scratch1.is(ip)); 1382e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(!scratch2.is(ip)); 1383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 138425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen // Make object size into bytes. 138525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 138625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen object_size *= kPointerSize; 138725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 138825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen ASSERT_EQ(0, object_size & kObjectAlignmentMask); 138925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 1390b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Check relative positions of allocation top and limit addresses. 1391b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The values must be adjacent in memory to allow the use of LDM. 1392b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Also, assert that the registers are numbered such that the values 1393b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // are loaded in the correct order. 1394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 139544f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference::new_space_allocation_top_address(isolate()); 1396b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ExternalReference new_space_allocation_limit = 139744f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference::new_space_allocation_limit_address(isolate()); 1398b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t top = 1399b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_top.address()); 1400b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t limit = 1401b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_limit.address()); 1402b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT((limit - top) == kPointerSize); 1403b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(result.code() < ip.code()); 1404b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1405b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Set up allocation top address and object size registers. 1406b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register topaddr = scratch1; 1407b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register obj_size_reg = scratch2; 1408b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(topaddr, Operand(new_space_allocation_top)); 1409b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(obj_size_reg, Operand(object_size)); 1410b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1411b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // This code stores a temporary value in ip. This is OK, as the code below 1412b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // does not need ip for implicit literal generation. 1413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 1414b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation top into result and allocation limit into ip. 1415b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldm(ia, topaddr, result.bit() | ip.bit()); 1416b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 141744f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1418b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Assert that result actually contains top on entry. ip is used 1419b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // immediately below so this use of ip does not cause difference with 1420b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // respect to register content between debug and release mode. 1421b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr)); 1422b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(result, ip); 1423b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Check(eq, "Unexpected allocation top"); 1424b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1425b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation limit into ip. Result already contains allocation top. 1426b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr, limit - top)); 1427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1428a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1429a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1430a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to calculate the new top. 14311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(scratch2, result, Operand(obj_size_reg), SetCC); 14321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(cs, gc_required); 1433b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch2, Operand(ip)); 1434a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1435b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch str(scratch2, MemOperand(topaddr)); 1436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1437b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Tag object if requested. 1438a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 1439b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(result, result, Operand(kHeapObjectTag)); 1440a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1443a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1444a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(Register object_size, 1445a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1446a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 1447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 1448a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 1449a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 14505913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!FLAG_inline_new) { 145144f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 14525913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // Trash the registers to simulate an allocation failure. 14535913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(result, Operand(0x7091)); 14545913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch1, Operand(0x7191)); 14555913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch2, Operand(0x7291)); 14565913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 14575913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck jmp(gc_required); 14585913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck return; 14595913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 14605913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 1461b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Assert that the register arguments are different and that none of 1462b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // them are ip. ip is used explicitly in the code generated below. 1463a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 1464b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!result.is(scratch2)); 1465a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 1466b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!result.is(ip)); 1467b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!scratch1.is(ip)); 1468b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!scratch2.is(ip)); 1469b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1470b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Check relative positions of allocation top and limit addresses. 1471b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The values must be adjacent in memory to allow the use of LDM. 1472b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Also, assert that the registers are numbered such that the values 1473b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // are loaded in the correct order. 1474a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 147544f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference::new_space_allocation_top_address(isolate()); 1476b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ExternalReference new_space_allocation_limit = 147744f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference::new_space_allocation_limit_address(isolate()); 1478b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t top = 1479b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_top.address()); 1480b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t limit = 1481b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_limit.address()); 1482b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT((limit - top) == kPointerSize); 1483b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(result.code() < ip.code()); 1484b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1485b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Set up allocation top address. 1486b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register topaddr = scratch1; 1487b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(topaddr, Operand(new_space_allocation_top)); 1488b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1489b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // This code stores a temporary value in ip. This is OK, as the code below 1490b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // does not need ip for implicit literal generation. 1491a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 1492b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation top into result and allocation limit into ip. 1493b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldm(ia, topaddr, result.bit() | ip.bit()); 1494b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 149544f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1496b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Assert that result actually contains top on entry. ip is used 1497b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // immediately below so this use of ip does not cause difference with 1498b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // respect to register content between debug and release mode. 1499b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr)); 1500b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(result, ip); 1501b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Check(eq, "Unexpected allocation top"); 1502b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1503b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation limit into ip. Result already contains allocation top. 1504b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr, limit - top)); 1505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1508b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // to calculate the new top. Object size may be in words so a shift is 1509b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // required to get the number of bytes. 151025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 15111e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(scratch2, result, Operand(object_size, LSL, kPointerSizeLog2), SetCC); 151225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } else { 15131e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(scratch2, result, Operand(object_size), SetCC); 151425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 15151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(cs, gc_required); 1516b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch2, Operand(ip)); 1517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1519d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Update allocation top. result temporarily holds the new top. 152044f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 1521b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch tst(scratch2, Operand(kObjectAlignmentMask)); 1522d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Check(eq, "Unaligned allocation in new space"); 1523d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1524b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch str(scratch2, MemOperand(topaddr)); 1525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Tag object if requested. 1527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 1528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(result, result, Operand(kHeapObjectTag)); 1529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::UndoAllocationInNewSpace(Register object, 1534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch) { 1535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 153644f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference::new_space_allocation_top_address(isolate()); 1537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure the object has no tag before resetting top. 1539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block and_(object, object, Operand(~kHeapObjectTagMask)); 1540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the object un-allocated is below the current top. 1542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1543a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(scratch)); 1544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(object, scratch); 1545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(lt, "Undo allocation of non allocated memory"); 1546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Write the address of the object to un-allocate as the current top. 1548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(object, MemOperand(scratch)); 1550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 15533100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteString(Register result, 15543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 15553100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 15563100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 15573100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 15583100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 15593100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 15603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 15613100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); 15623100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(scratch1, Operand(length, LSL, 1)); // Length in bytes, not chars. 15633100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, scratch1, 15643100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqTwoByteString::kHeaderSize)); 156525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 15663100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 15673100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate two-byte string in new space. 15683100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 15693100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 15703100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 15713100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 15723100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 15733100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 15743100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 15753100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 15766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 15776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 15786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kStringMapRootIndex, 15796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 15806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 15813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 15823100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 15833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 15843100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiString(Register result, 15853100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 15863100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 15873100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 15883100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 15893100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 15903100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 15913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 15923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqAsciiString::kHeaderSize & kObjectAlignmentMask) == 0); 15933100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(kCharSize == 1); 15943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, length, 15953100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqAsciiString::kHeaderSize)); 159625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 15973100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 15983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate ASCII string in new space. 15993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 16003100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 16013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 16023100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 16033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 16043100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 16053100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 16076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 16086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 16096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kAsciiStringMapRootIndex, 16106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 16116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 16123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 16133100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16143100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16153100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteConsString(Register result, 16163100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 16173100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 16183100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 16193100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 162025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 16213100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 16223100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 16233100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 16243100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 16253100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 16266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 16276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 16286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 16296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsStringMapRootIndex, 16306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 16316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 16323100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 16333100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16343100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16353100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiConsString(Register result, 16363100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 16373100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 16383100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 16393100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 164025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 16413100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 16423100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 16433100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 16443100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 16453100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 16466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 16476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 16486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 16496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsAsciiStringMapRootIndex, 16506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 16516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 16523100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 16533100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16556ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CompareObjectType(Register object, 1656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register map, 1657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 16596ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(map, FieldMemOperand(object, HeapObject::kMapOffset)); 1660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareInstanceType(map, type_reg, type); 1661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CompareInstanceType(Register map, 1665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 1667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); 1668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(type_reg, Operand(type)); 1669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1672e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::CompareRoot(Register obj, 1673e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Heap::RootListIndex index) { 1674e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(!obj.is(ip)); 1675e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch LoadRoot(ip, index); 1676e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(obj, ip); 1677e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 1678e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1679e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 16803100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::CheckMap(Register obj, 16813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch, 16823100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Handle<Map> map, 16833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* fail, 1684257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SmiCheckType smi_check_type) { 1685257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (smi_check_type == DO_SMI_CHECK) { 16861e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block JumpIfSmi(obj, fail); 16873100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 16883100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 16893100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(ip, Operand(map)); 16903100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu cmp(scratch, ip); 16913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, fail); 16923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 16933100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::CheckMap(Register obj, 16967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 16977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Heap::RootListIndex index, 16987f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Label* fail, 1699257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SmiCheckType smi_check_type) { 1700257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (smi_check_type == DO_SMI_CHECK) { 17011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block JumpIfSmi(obj, fail); 17027f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 17037f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 17047f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch LoadRoot(ip, index); 17057f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch cmp(scratch, ip); 17067f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch b(ne, fail); 17077f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 17087f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 17097f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 1710257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::DispatchMap(Register obj, 1711257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register scratch, 1712257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Map> map, 1713257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Code> success, 1714257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SmiCheckType smi_check_type) { 1715257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Label fail; 1716257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (smi_check_type == DO_SMI_CHECK) { 1717257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch JumpIfSmi(obj, &fail); 1718257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1719257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 1720257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(ip, Operand(map)); 1721257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch cmp(scratch, ip); 1722257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Jump(success, RelocInfo::CODE_TARGET, eq); 1723257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bind(&fail); 1724257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1725257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1726257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::TryGetFunctionPrototype(Register function, 1728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 1730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 1731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the receiver isn't a smi. 17321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block JumpIfSmi(function, miss); 1733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the function really is a function. Load map into result reg. 1735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(function, result, scratch, JS_FUNCTION_TYPE); 1736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 1737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure that the function has an instance prototype. 1739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label non_instance; 1740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); 1741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block tst(scratch, Operand(1 << Map::kHasNonInstancePrototype)); 1742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &non_instance); 1743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype or initial map from the function. 1745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, 1746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 1747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the prototype or initial map is the hole, don't return it and 1749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // simply miss the cache instead. This will allow us to allocate a 1750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // prototype object on-demand in the runtime system. 1751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kTheHoleValueRootIndex); 1752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, ip); 1753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, miss); 1754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the function does not have an initial map, we're done. 1756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 1757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(result, scratch, scratch, MAP_TYPE); 1758a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &done); 1759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype from the initial map. 1761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kPrototypeOffset)); 1762a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block jmp(&done); 1763a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Non-instance prototype: Fetch prototype from constructor field 1765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in initial map. 1766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&non_instance); 1767a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kConstructorOffset)); 1768a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1769a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All done. 1770a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 1771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallStub(CodeStub* stub, Condition cond) { 17751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(allow_stub_calls()); // Stub calls are not allowed in some stubs. 1776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 1777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1780257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochMaybeObject* MacroAssembler::TryCallStub(CodeStub* stub, Condition cond) { 1781257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(allow_stub_calls()); // Stub calls are not allowed in some stubs. 1782257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Object* result; 1783257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch { MaybeObject* maybe_result = stub->TryGetCode(); 1784257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (!maybe_result->ToObject(&result)) return maybe_result; 1785257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1786257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Call(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET, cond); 1787257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return result; 1788257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1789257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1790257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 17913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::TailCallStub(CodeStub* stub, Condition cond) { 17921e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(allow_stub_calls()); // Stub calls are not allowed in some stubs. 17931e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 17941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 17951e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17961e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17971e0659c275bb392c045087af4f6b0d7565cb3d77Steve BlockMaybeObject* MacroAssembler::TryTailCallStub(CodeStub* stub, Condition cond) { 17981e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(allow_stub_calls()); // Stub calls are not allowed in some stubs. 17991e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Object* result; 18001e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block { MaybeObject* maybe_result = stub->TryGetCode(); 18011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (!maybe_result->ToObject(&result)) return maybe_result; 18021e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 1803257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Jump(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET, cond); 18041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return result; 18051e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 18061e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18071e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18081e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockstatic int AddressOffset(ExternalReference ref0, ExternalReference ref1) { 18091e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return ref0.address() - ref1.address(); 18101e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 18111e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18131e0659c275bb392c045087af4f6b0d7565cb3d77Steve BlockMaybeObject* MacroAssembler::TryCallApiFunctionAndReturn( 1814e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ExternalReference function, int stack_space) { 18151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ExternalReference next_address = 18161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ExternalReference::handle_scope_next_address(); 18171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const int kNextOffset = 0; 18181e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const int kLimitOffset = AddressOffset( 18191e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ExternalReference::handle_scope_limit_address(), 18201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block next_address); 18211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const int kLevelOffset = AddressOffset( 18221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ExternalReference::handle_scope_level_address(), 18231e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block next_address); 18241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Allocate HandleScope in callee-save registers. 18261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(r7, Operand(next_address)); 18271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(r4, MemOperand(r7, kNextOffset)); 18281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(r5, MemOperand(r7, kLimitOffset)); 18291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(r6, MemOperand(r7, kLevelOffset)); 18301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(r6, r6, Operand(1)); 18311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(r6, MemOperand(r7, kLevelOffset)); 18321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Native call returns to the DirectCEntry stub which redirects to the 18341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // return address pushed on stack (could have moved after GC). 18351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // DirectCEntry stub itself is generated early and never moves. 18361e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DirectCEntryStub stub; 18371e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block stub.GenerateCall(this, function); 18381e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Label promote_scheduled_exception; 18401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Label delete_allocated_handles; 18411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Label leave_exit_frame; 18421e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18431e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // If result is non-zero, dereference to get the result value 18441e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // otherwise set it to undefined. 18451e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block cmp(r0, Operand(0)); 18461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block LoadRoot(r0, Heap::kUndefinedValueRootIndex, eq); 18471e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(r0, MemOperand(r0), ne); 18481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18491e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // No more valid handles (the result handle was the last one). Restore 18501e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // previous handle scope. 18511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(r4, MemOperand(r7, kNextOffset)); 185244f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 18531e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(r1, MemOperand(r7, kLevelOffset)); 18541e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block cmp(r1, r6); 18551e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Check(eq, "Unexpected level after return from api call"); 18561e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 18571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block sub(r6, r6, Operand(1)); 18581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(r6, MemOperand(r7, kLevelOffset)); 18591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(ip, MemOperand(r7, kLimitOffset)); 18601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block cmp(r5, ip); 18611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(ne, &delete_allocated_handles); 18621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Check if the function scheduled an exception. 18641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block bind(&leave_exit_frame); 18651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block LoadRoot(r4, Heap::kTheHoleValueRootIndex); 186644f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(ip, Operand(ExternalReference::scheduled_exception_address(isolate()))); 18671e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(r5, MemOperand(ip)); 18681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block cmp(r4, r5); 18691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(ne, &promote_scheduled_exception); 18701e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1871e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // LeaveExitFrame expects unwind space to be in a register. 18721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(r4, Operand(stack_space)); 1873e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch LeaveExitFrame(false, r4); 1874e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(pc, lr); 18751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block bind(&promote_scheduled_exception); 187744f0eee88ff00398ff7f715fab053374d808c90dSteve Block MaybeObject* result 187844f0eee88ff00398ff7f715fab053374d808c90dSteve Block = TryTailCallExternalReference( 187944f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference(Runtime::kPromoteScheduledException, isolate()), 188044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 0, 188144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 1); 18821e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (result->IsFailure()) { 18831e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return result; 18841e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 18851e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18861e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // HandleScope limit has changed. Delete allocated extensions. 18871e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block bind(&delete_allocated_handles); 18881e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block str(r5, MemOperand(r7, kLimitOffset)); 18891e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(r4, r0); 18908b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch PrepareCallCFunction(1, r5); 18918b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch mov(r0, Operand(ExternalReference::isolate_address())); 189244f0eee88ff00398ff7f715fab053374d808c90dSteve Block CallCFunction( 18938b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch ExternalReference::delete_handle_scope_extensions(isolate()), 1); 18941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(r0, r4); 18951e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block jmp(&leave_exit_frame); 18961e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 18971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return result; 18983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 18993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 19003100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IllegalOperation(int num_arguments) { 1902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (num_arguments > 0) { 1903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(sp, sp, Operand(num_arguments * kPointerSize)); 1904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(r0, Heap::kUndefinedValueRootIndex); 1906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 190980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid MacroAssembler::IndexFromHash(Register hash, Register index) { 191080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the hash field contains an array index pick it out. The assert checks 191180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // that the constants for the maximum number of digits for an array index 191280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // cached in the hash field and the number of bits reserved for it does not 191380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // conflict. 191480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < 191580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen (1 << String::kArrayIndexValueBits)); 191680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We want the smi-tagged index in key. kArrayIndexValueMask has zeros in 191780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the low kHashShift bits. 191880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTag == 0); 191980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Ubfx(hash, hash, String::kHashShift, String::kArrayIndexValueBits); 192080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen mov(index, Operand(hash, LSL, kSmiTagSize)); 192180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 192280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 192380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 1924d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::IntegerToDoubleConversionWithVFP3(Register inReg, 1925d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outHighReg, 1926d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outLowReg) { 1927d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // ARMv7 VFP3 instructions to implement integer to double conversion. 1928d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block mov(r7, Operand(inReg, ASR, kSmiTagSize)); 1929e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(s15, r7); 19306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block vcvt_f64_s32(d7, s15); 1931e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(outLowReg, outHighReg, d7); 1932d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1933d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1934d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 19358defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::ObjectToDoubleVFPRegister(Register object, 19368defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister result, 19378defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 19388defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 19398defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 19408defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch3, 19418defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* not_number, 19428defd9ff6930b4e24729971a61cf7469daf119beSteve Block ObjectToDoubleFlags flags) { 19438defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 19448defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & OBJECT_NOT_SMI) == 0) { 19458defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label not_smi; 19461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block JumpIfNotSmi(object, ¬_smi); 19478defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Remove smi tag and convert to double. 19488defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(object, ASR, kSmiTagSize)); 19498defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch3, scratch1); 19508defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(result, scratch3); 19518defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(&done); 19528defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(¬_smi); 19538defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 19548defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Check for heap number and load double value from it. 19558defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); 19568defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch2, object, Operand(kHeapObjectTag)); 19578defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, heap_number_map); 19588defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(ne, not_number); 19598defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { 19608defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If exponent is all ones the number is either a NaN or +/-Infinity. 19618defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapNumber::kExponentOffset)); 19628defd9ff6930b4e24729971a61cf7469daf119beSteve Block Sbfx(scratch1, 19638defd9ff6930b4e24729971a61cf7469daf119beSteve Block scratch1, 19648defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentShift, 19658defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentBits); 19668defd9ff6930b4e24729971a61cf7469daf119beSteve Block // All-one value sign extend to -1. 19678defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, Operand(-1)); 19688defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(eq, not_number); 19698defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 19708defd9ff6930b4e24729971a61cf7469daf119beSteve Block vldr(result, scratch2, HeapNumber::kValueOffset); 19718defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 19728defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 19738defd9ff6930b4e24729971a61cf7469daf119beSteve Block 19748defd9ff6930b4e24729971a61cf7469daf119beSteve Block 19758defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::SmiToDoubleVFPRegister(Register smi, 19768defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 19778defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 19788defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch2) { 19798defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(smi, ASR, kSmiTagSize)); 19808defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch2, scratch1); 19818defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(value, scratch2); 19828defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 19838defd9ff6930b4e24729971a61cf7469daf119beSteve Block 19848defd9ff6930b4e24729971a61cf7469daf119beSteve Block 19859ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// Tries to get a signed int32 out of a double precision floating point heap 19869ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// number. Rounds towards 0. Branch to 'not_int32' if the double is out of the 19879ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// 32bits signed integer range. 19889ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrickvoid MacroAssembler::ConvertToInt32(Register source, 19899ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register dest, 19909ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register scratch, 19919ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register scratch2, 19921e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DwVfpRegister double_scratch, 19939ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Label *not_int32) { 19948b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (CpuFeatures::IsSupported(VFP3)) { 19959ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick CpuFeatures::Scope scope(VFP3); 19969ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch, source, Operand(kHeapObjectTag)); 19971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block vldr(double_scratch, scratch, HeapNumber::kValueOffset); 19981e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block vcvt_s32_f64(double_scratch.low(), double_scratch); 19991e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block vmov(dest, double_scratch.low()); 20009ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Signed vcvt instruction will saturate to the minimum (0x80000000) or 20019ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // maximun (0x7fffffff) signed 32bits integer when the double is out of 20029ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // range. When substracting one, the minimum signed integer becomes the 20039ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // maximun signed integer. 20049ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch, dest, Operand(1)); 20059ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch, Operand(LONG_MAX - 1)); 20069ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If equal then dest was LONG_MAX, if greater dest was LONG_MIN. 20079ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(ge, not_int32); 20089ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick } else { 20099ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // This code is faster for doubles that are in the ranges -0x7fffffff to 20109ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // -0x40000000 or 0x40000000 to 0x7fffffff. This corresponds almost to 20119ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // the range of signed int32 values that are not Smis. Jumps to the label 20129ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 'not_int32' if the double isn't in the range -0x80000000.0 to 20139ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 0x80000000.0 (excluding the endpoints). 20149ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Label right_exponent, done; 20159ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get exponent word. 20169ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick ldr(scratch, FieldMemOperand(source, HeapNumber::kExponentOffset)); 20179ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get exponent alone in scratch2. 20189ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Ubfx(scratch2, 2019e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch scratch, 2020e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch HeapNumber::kExponentShift, 2021e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch HeapNumber::kExponentBits); 20229ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Load dest with zero. We use this either for the final shift or 20239ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // for the answer. 20249ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dest, Operand(0, RelocInfo::NONE)); 20259ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Check whether the exponent matches a 32 bit signed int that is not a Smi. 20269ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // A non-Smi integer is 1.xxx * 2^30 so the exponent is 30 (biased). This is 20279ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // the exponent that we are fastest at and also the highest exponent we can 20289ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // handle here. 20299ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const uint32_t non_smi_exponent = HeapNumber::kExponentBias + 30; 20309ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // The non_smi_exponent, 0x41d, is too big for ARM's immediate field so we 20319ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // split it up to avoid a constant pool entry. You can't do that in general 20329ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // for cmp because of the overflow flag, but we know the exponent is in the 20339ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // range 0-2047 so there is no overflow. 20349ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick int fudge_factor = 0x400; 20359ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch2, scratch2, Operand(fudge_factor)); 20369ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch2, Operand(non_smi_exponent - fudge_factor)); 20379ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If we have a match of the int32-but-not-Smi exponent then skip some 20389ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // logic. 20399ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(eq, &right_exponent); 20409ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If the exponent is higher than that then go to slow case. This catches 20419ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // numbers that don't fit in a signed int32, infinities and NaNs. 20429ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(gt, not_int32); 20439ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 20449ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // We know the exponent is smaller than 30 (biased). If it is less than 20459ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 0 (biased) then the number is smaller in magnitude than 1.0 * 2^0, ie 20469ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // it rounds to zero. 20479ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const uint32_t zero_exponent = HeapNumber::kExponentBias + 0; 20489ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch2, scratch2, Operand(zero_exponent - fudge_factor), SetCC); 20499ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Dest already has a Smi zero. 20509ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(lt, &done); 20519ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 20529ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // We have an exponent between 0 and 30 in scratch2. Subtract from 30 to 20539ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // get how much to shift down. 20549ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick rsb(dest, scratch2, Operand(30)); 20559ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 20569ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick bind(&right_exponent); 20579ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get the top bits of the mantissa. 20589ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick and_(scratch2, scratch, Operand(HeapNumber::kMantissaMask)); 20599ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Put back the implicit 1. 20609ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick orr(scratch2, scratch2, Operand(1 << HeapNumber::kExponentShift)); 20619ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Shift up the mantissa bits to take up the space the exponent used to 20629ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // take. We just orred in the implicit bit so that took care of one and 20639ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // we want to leave the sign bit 0 so we subtract 2 bits from the shift 20649ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // distance. 20659ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const int shift_distance = HeapNumber::kNonMantissaBitsInTopWord - 2; 20669ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(scratch2, Operand(scratch2, LSL, shift_distance)); 20679ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Put sign in zero flag. 20689ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick tst(scratch, Operand(HeapNumber::kSignMask)); 20699ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get the second half of the double. For some exponents we don't 20709ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // actually need this because the bits get shifted out again, but 20719ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // it's probably slower to test than just to do it. 20729ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick ldr(scratch, FieldMemOperand(source, HeapNumber::kMantissaOffset)); 20739ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Shift down 22 bits to get the last 10 bits. 20749ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick orr(scratch, scratch2, Operand(scratch, LSR, 32 - shift_distance)); 20759ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Move down according to the exponent. 20769ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dest, Operand(scratch, LSR, dest)); 20779ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Fix sign if sign bit was set. 20789ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick rsb(dest, dest, Operand(0, RelocInfo::NONE), LeaveCC, ne); 20799ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick bind(&done); 20809ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick } 20819ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick} 20829ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 20839ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 2084e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::EmitVFPTruncate(VFPRoundingMode rounding_mode, 2085e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch SwVfpRegister result, 2086e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch DwVfpRegister double_input, 2087e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register scratch1, 2088e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register scratch2, 2089e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch CheckForInexactConversion check_inexact) { 20908b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch ASSERT(CpuFeatures::IsSupported(VFP3)); 2091e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch CpuFeatures::Scope scope(VFP3); 2092e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register prev_fpscr = scratch1; 2093e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register scratch = scratch2; 2094e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2095e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int32_t check_inexact_conversion = 2096e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch (check_inexact == kCheckForInexactConversion) ? kVFPInexactExceptionBit : 0; 2097e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2098e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set custom FPCSR: 2099e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // - Set rounding mode. 2100e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // - Clear vfp cumulative exception flags. 2101e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // - Make sure Flush-to-zero mode control bit is unset. 2102e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch vmrs(prev_fpscr); 2103e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bic(scratch, 2104e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch prev_fpscr, 2105e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Operand(kVFPExceptionMask | 2106e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch check_inexact_conversion | 2107e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch kVFPRoundingModeMask | 2108e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch kVFPFlushToZeroMask)); 2109e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // 'Round To Nearest' is encoded by 0b00 so no bits need to be set. 2110e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (rounding_mode != kRoundToNearest) { 2111e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch orr(scratch, scratch, Operand(rounding_mode)); 2112e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 2113e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch vmsr(scratch); 2114e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2115e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Convert the argument to an integer. 2116e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch vcvt_s32_f64(result, 2117e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch double_input, 2118e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch (rounding_mode == kRoundToZero) ? kDefaultRoundToZero 2119e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch : kFPSCRRounding); 2120e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2121e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Retrieve FPSCR. 2122e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch vmrs(scratch); 2123e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Restore FPSCR. 2124e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch vmsr(prev_fpscr); 2125e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Check for vfp exceptions. 2126e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch tst(scratch, Operand(kVFPExceptionMask | check_inexact_conversion)); 2127e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 2128e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2129e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 213044f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::EmitOutOfInt32RangeTruncate(Register result, 213144f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register input_high, 213244f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register input_low, 213344f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register scratch) { 213444f0eee88ff00398ff7f715fab053374d808c90dSteve Block Label done, normal_exponent, restore_sign; 213544f0eee88ff00398ff7f715fab053374d808c90dSteve Block 213644f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Extract the biased exponent in result. 213744f0eee88ff00398ff7f715fab053374d808c90dSteve Block Ubfx(result, 213844f0eee88ff00398ff7f715fab053374d808c90dSteve Block input_high, 213944f0eee88ff00398ff7f715fab053374d808c90dSteve Block HeapNumber::kExponentShift, 214044f0eee88ff00398ff7f715fab053374d808c90dSteve Block HeapNumber::kExponentBits); 214144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 214244f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Check for Infinity and NaNs, which should return 0. 214344f0eee88ff00398ff7f715fab053374d808c90dSteve Block cmp(result, Operand(HeapNumber::kExponentMask)); 214444f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(result, Operand(0), LeaveCC, eq); 214544f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(eq, &done); 214644f0eee88ff00398ff7f715fab053374d808c90dSteve Block 214744f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Express exponent as delta to (number of mantissa bits + 31). 214844f0eee88ff00398ff7f715fab053374d808c90dSteve Block sub(result, 214944f0eee88ff00398ff7f715fab053374d808c90dSteve Block result, 215044f0eee88ff00398ff7f715fab053374d808c90dSteve Block Operand(HeapNumber::kExponentBias + HeapNumber::kMantissaBits + 31), 215144f0eee88ff00398ff7f715fab053374d808c90dSteve Block SetCC); 215244f0eee88ff00398ff7f715fab053374d808c90dSteve Block 215344f0eee88ff00398ff7f715fab053374d808c90dSteve Block // If the delta is strictly positive, all bits would be shifted away, 215444f0eee88ff00398ff7f715fab053374d808c90dSteve Block // which means that we can return 0. 215544f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(le, &normal_exponent); 215644f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(result, Operand(0)); 215744f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(&done); 215844f0eee88ff00398ff7f715fab053374d808c90dSteve Block 215944f0eee88ff00398ff7f715fab053374d808c90dSteve Block bind(&normal_exponent); 216044f0eee88ff00398ff7f715fab053374d808c90dSteve Block const int kShiftBase = HeapNumber::kNonMantissaBitsInTopWord - 1; 216144f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Calculate shift. 216244f0eee88ff00398ff7f715fab053374d808c90dSteve Block add(scratch, result, Operand(kShiftBase + HeapNumber::kMantissaBits), SetCC); 216344f0eee88ff00398ff7f715fab053374d808c90dSteve Block 216444f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Save the sign. 216544f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register sign = result; 216644f0eee88ff00398ff7f715fab053374d808c90dSteve Block result = no_reg; 216744f0eee88ff00398ff7f715fab053374d808c90dSteve Block and_(sign, input_high, Operand(HeapNumber::kSignMask)); 216844f0eee88ff00398ff7f715fab053374d808c90dSteve Block 216944f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Set the implicit 1 before the mantissa part in input_high. 217044f0eee88ff00398ff7f715fab053374d808c90dSteve Block orr(input_high, 217144f0eee88ff00398ff7f715fab053374d808c90dSteve Block input_high, 217244f0eee88ff00398ff7f715fab053374d808c90dSteve Block Operand(1 << HeapNumber::kMantissaBitsInTopWord)); 217344f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Shift the mantissa bits to the correct position. 217444f0eee88ff00398ff7f715fab053374d808c90dSteve Block // We don't need to clear non-mantissa bits as they will be shifted away. 217544f0eee88ff00398ff7f715fab053374d808c90dSteve Block // If they weren't, it would mean that the answer is in the 32bit range. 217644f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(input_high, Operand(input_high, LSL, scratch)); 217744f0eee88ff00398ff7f715fab053374d808c90dSteve Block 217844f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Replace the shifted bits with bits from the lower mantissa word. 217944f0eee88ff00398ff7f715fab053374d808c90dSteve Block Label pos_shift, shift_done; 218044f0eee88ff00398ff7f715fab053374d808c90dSteve Block rsb(scratch, scratch, Operand(32), SetCC); 218144f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(&pos_shift, ge); 218244f0eee88ff00398ff7f715fab053374d808c90dSteve Block 218344f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Negate scratch. 218444f0eee88ff00398ff7f715fab053374d808c90dSteve Block rsb(scratch, scratch, Operand(0)); 218544f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(input_low, Operand(input_low, LSL, scratch)); 218644f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(&shift_done); 218744f0eee88ff00398ff7f715fab053374d808c90dSteve Block 218844f0eee88ff00398ff7f715fab053374d808c90dSteve Block bind(&pos_shift); 218944f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(input_low, Operand(input_low, LSR, scratch)); 219044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 219144f0eee88ff00398ff7f715fab053374d808c90dSteve Block bind(&shift_done); 219244f0eee88ff00398ff7f715fab053374d808c90dSteve Block orr(input_high, input_high, Operand(input_low)); 219344f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Restore sign if necessary. 219444f0eee88ff00398ff7f715fab053374d808c90dSteve Block cmp(sign, Operand(0)); 219544f0eee88ff00398ff7f715fab053374d808c90dSteve Block result = sign; 219644f0eee88ff00398ff7f715fab053374d808c90dSteve Block sign = no_reg; 219744f0eee88ff00398ff7f715fab053374d808c90dSteve Block rsb(result, input_high, Operand(0), LeaveCC, ne); 219844f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(result, input_high, LeaveCC, eq); 219944f0eee88ff00398ff7f715fab053374d808c90dSteve Block bind(&done); 220044f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 220144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 220244f0eee88ff00398ff7f715fab053374d808c90dSteve Block 220344f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::EmitECMATruncate(Register result, 220444f0eee88ff00398ff7f715fab053374d808c90dSteve Block DwVfpRegister double_input, 220544f0eee88ff00398ff7f715fab053374d808c90dSteve Block SwVfpRegister single_scratch, 220644f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register scratch, 220744f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register input_high, 220844f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register input_low) { 220944f0eee88ff00398ff7f715fab053374d808c90dSteve Block CpuFeatures::Scope scope(VFP3); 221044f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(!input_high.is(result)); 221144f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(!input_low.is(result)); 221244f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(!input_low.is(input_high)); 221344f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(!scratch.is(result) && 221444f0eee88ff00398ff7f715fab053374d808c90dSteve Block !scratch.is(input_high) && 221544f0eee88ff00398ff7f715fab053374d808c90dSteve Block !scratch.is(input_low)); 221644f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(!single_scratch.is(double_input.low()) && 221744f0eee88ff00398ff7f715fab053374d808c90dSteve Block !single_scratch.is(double_input.high())); 221844f0eee88ff00398ff7f715fab053374d808c90dSteve Block 221944f0eee88ff00398ff7f715fab053374d808c90dSteve Block Label done; 222044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 222144f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Clear cumulative exception flags. 222244f0eee88ff00398ff7f715fab053374d808c90dSteve Block ClearFPSCRBits(kVFPExceptionMask, scratch); 222344f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Try a conversion to a signed integer. 222444f0eee88ff00398ff7f715fab053374d808c90dSteve Block vcvt_s32_f64(single_scratch, double_input); 222544f0eee88ff00398ff7f715fab053374d808c90dSteve Block vmov(result, single_scratch); 222644f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Retrieve he FPSCR. 222744f0eee88ff00398ff7f715fab053374d808c90dSteve Block vmrs(scratch); 222844f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Check for overflow and NaNs. 222944f0eee88ff00398ff7f715fab053374d808c90dSteve Block tst(scratch, Operand(kVFPOverflowExceptionBit | 223044f0eee88ff00398ff7f715fab053374d808c90dSteve Block kVFPUnderflowExceptionBit | 223144f0eee88ff00398ff7f715fab053374d808c90dSteve Block kVFPInvalidOpExceptionBit)); 223244f0eee88ff00398ff7f715fab053374d808c90dSteve Block // If we had no exceptions we are done. 223344f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(eq, &done); 223444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 223544f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Load the double value and perform a manual truncation. 223644f0eee88ff00398ff7f715fab053374d808c90dSteve Block vmov(input_low, input_high, double_input); 223744f0eee88ff00398ff7f715fab053374d808c90dSteve Block EmitOutOfInt32RangeTruncate(result, 223844f0eee88ff00398ff7f715fab053374d808c90dSteve Block input_high, 223944f0eee88ff00398ff7f715fab053374d808c90dSteve Block input_low, 224044f0eee88ff00398ff7f715fab053374d808c90dSteve Block scratch); 224144f0eee88ff00398ff7f715fab053374d808c90dSteve Block bind(&done); 224244f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 224344f0eee88ff00398ff7f715fab053374d808c90dSteve Block 224444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 22453100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::GetLeastBitsFromSmi(Register dst, 22463100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register src, 22473100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu int num_least_bits) { 22488b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (CpuFeatures::IsSupported(ARMv7)) { 22497f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ubfx(dst, src, kSmiTagSize, num_least_bits); 22503100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } else { 22513100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(dst, Operand(src, ASR, kSmiTagSize)); 22523100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu and_(dst, dst, Operand((1 << num_least_bits) - 1)); 22533100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 22543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 22553100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 22563100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 22571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::GetLeastBitsFromInt32(Register dst, 22581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Register src, 22591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int num_least_bits) { 22601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block and_(dst, src, Operand((1 << num_least_bits) - 1)); 22611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 22621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 22631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 226444f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::CallRuntime(const Runtime::Function* f, 226544f0eee88ff00398ff7f715fab053374d808c90dSteve Block int num_arguments) { 2266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All parameters are on the stack. r0 has the return value after call. 2267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the expected number of arguments of the runtime function is 2269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // constant, we check that the actual number of arguments match the 2270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // expectation. 2271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (f->nargs >= 0 && f->nargs != num_arguments) { 2272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block IllegalOperation(num_arguments); 2273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 2274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 2275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 22764515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // TODO(1236192): Most runtime routines don't need the number of 22774515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // arguments passed in because it is constant. At some point we 22784515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // should remove this need and make the runtime routine entry code 22794515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // smarter. 22804515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r0, Operand(num_arguments)); 228144f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r1, Operand(ExternalReference(f, isolate()))); 22824515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke CEntryStub stub(1); 2283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallStub(&stub); 2284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::FunctionId fid, int num_arguments) { 2288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::FunctionForId(fid), num_arguments); 2289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2292b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::CallRuntimeSaveDoubles(Runtime::FunctionId id) { 229344f0eee88ff00398ff7f715fab053374d808c90dSteve Block const Runtime::Function* function = Runtime::FunctionForId(id); 2294b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(r0, Operand(function->nargs)); 229544f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(r1, Operand(ExternalReference(function, isolate()))); 2296b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch CEntryStub stub(1); 2297b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch stub.SaveDoubles(); 2298b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch CallStub(&stub); 2299b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2300b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2301b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2302402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::CallExternalReference(const ExternalReference& ext, 2303402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu int num_arguments) { 2304402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r0, Operand(num_arguments)); 2305402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ext)); 2306402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 2307402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub stub(1); 2308402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CallStub(&stub); 2309402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 2310402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 2311402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 23126ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallExternalReference(const ExternalReference& ext, 23136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 23146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 2315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(1236192): Most runtime routines don't need the number of 2316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments passed in because it is constant. At some point we 2317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // should remove this need and make the runtime routine entry code 2318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // smarter. 2319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(num_arguments)); 23206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpToExternalReference(ext); 2321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 23241e0659c275bb392c045087af4f6b0d7565cb3d77Steve BlockMaybeObject* MacroAssembler::TryTailCallExternalReference( 23251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const ExternalReference& ext, int num_arguments, int result_size) { 23261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // TODO(1236192): Most runtime routines don't need the number of 23271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // arguments passed in because it is constant. At some point we 23281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // should remove this need and make the runtime routine entry code 23291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // smarter. 23301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(r0, Operand(num_arguments)); 23311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return TryJumpToExternalReference(ext); 23321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 23331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 23341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 23356ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, 23366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 23376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 233844f0eee88ff00398ff7f715fab053374d808c90dSteve Block TailCallExternalReference(ExternalReference(fid, isolate()), 233944f0eee88ff00398ff7f715fab053374d808c90dSteve Block num_arguments, 234044f0eee88ff00398ff7f715fab053374d808c90dSteve Block result_size); 23416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 23426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 23436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 23446ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpToExternalReference(const ExternalReference& builtin) { 2345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) 2346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Thumb mode builtin. 2347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((reinterpret_cast<intptr_t>(builtin.address()) & 1) == 1); 2348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 2349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r1, Operand(builtin)); 2350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CEntryStub stub(1); 2351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(stub.GetCode(), RelocInfo::CODE_TARGET); 2352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 23551e0659c275bb392c045087af4f6b0d7565cb3d77Steve BlockMaybeObject* MacroAssembler::TryJumpToExternalReference( 23561e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const ExternalReference& builtin) { 23571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#if defined(__thumb__) 23581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Thumb mode builtin. 23591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT((reinterpret_cast<intptr_t>(builtin.address()) & 1) == 1); 23601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif 23611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block mov(r1, Operand(builtin)); 23621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block CEntryStub stub(1); 23631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return TryTailCallStub(&stub); 23641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 23651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 23661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 2367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, 2368257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch InvokeFlag flag, 2369257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch const CallWrapper& call_wrapper) { 2370402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu GetBuiltinEntry(r2, id); 2371257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (flag == CALL_FUNCTION) { 2372257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper.BeforeCall(CallSize(r2)); 2373257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, CALL_AS_METHOD); 2374402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(r2); 2375257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch call_wrapper.AfterCall(); 2376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 2377257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(flag == JUMP_FUNCTION); 2378257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch SetCallKind(r5, CALL_AS_METHOD); 2379402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Jump(r2); 2380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 2381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2384791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinFunction(Register target, 2385791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block Builtins::JavaScript id) { 23866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the builtins object into target register. 23876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 23886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); 2389402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Load the JavaScript builtin function from the builtins object. 2390791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(target, 23916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JSBuiltinsObject::OffsetOfFunctionWithId(id))); 2392791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block} 2393791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block 23946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2395791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { 2396791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ASSERT(!target.is(r1)); 2397791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block GetBuiltinFunction(r1, id); 23986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the code entry point from the builtins object. 2399791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 2400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SetCounter(StatsCounter* counter, int value, 2404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 2405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 2406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(value)); 2407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 2408a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 2409a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 2410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2411a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IncrementCounter(StatsCounter* counter, int value, 2414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 2415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 2416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 2417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 2418a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 2419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(scratch1, scratch1, Operand(value)); 2420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 2421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 2422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2424a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2425a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::DecrementCounter(StatsCounter* counter, int value, 2426a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 2427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 2428a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 2429a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 2430a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 2431a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sub(scratch1, scratch1, Operand(value)); 2432a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 2433a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 2434a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2435a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 24371e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::Assert(Condition cond, const char* msg) { 243844f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) 24391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Check(cond, msg); 2440a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 24439dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::AssertRegisterIsRoot(Register reg, 24449dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Heap::RootListIndex index) { 244544f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 24469dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen LoadRoot(ip, index); 24479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen cmp(reg, ip); 24489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Check(eq, "Register did not match expected root"); 24499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 24509dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 24519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 24529dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2453756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AssertFastElements(Register elements) { 245444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 2455756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT(!elements.is(ip)); 2456756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Label ok; 2457756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick push(elements); 2458756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ldr(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); 2459756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedArrayMapRootIndex); 2460756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 2461756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 2462756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex); 2463756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 2464756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 2465756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Abort("JSObject with fast elements map has slow elements"); 2466756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick bind(&ok); 2467756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick pop(elements); 2468756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick } 2469756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 2470756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 2471756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 24721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::Check(Condition cond, const char* msg) { 2473a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label L; 24741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(cond, &L); 2475a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Abort(msg); 2476a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 2477a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&L); 2478a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2479a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Abort(const char* msg) { 24828defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label abort_start; 24838defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&abort_start); 2484a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We want to pass the msg string like a smi to avoid GC 2485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // problems, however msg is not guaranteed to be aligned 2486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // properly. Instead, we pass an aligned pointer that is 2487a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a proper v8 smi, but also pass the alignment difference 2488a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // from the real pointer as a smi. 2489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p1 = reinterpret_cast<intptr_t>(msg); 2490a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; 2491a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); 2492a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 2493a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (msg != NULL) { 2494a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment("Abort message: "); 2495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment(msg); 2496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 2497a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 2498d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Disable stub call restrictions to always allow calls to abort. 2499086aeeaae12517475c22695a200be45495516549Ben Murdoch AllowStubCallsScope allow_scope(this, true); 2500d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 2501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(p0)); 2502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 2503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(Smi::FromInt(p1 - p0))); 2504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 2505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::kAbort, 2); 2506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 25078defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (is_const_pool_blocked()) { 25088defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If the calling code cares about the exact number of 25098defd9ff6930b4e24729971a61cf7469daf119beSteve Block // instructions generated, we insert padding here to keep the size 25108defd9ff6930b4e24729971a61cf7469daf119beSteve Block // of the Abort macro constant. 25118defd9ff6930b4e24729971a61cf7469daf119beSteve Block static const int kExpectedAbortInstructions = 10; 25128defd9ff6930b4e24729971a61cf7469daf119beSteve Block int abort_instructions = InstructionsGeneratedSince(&abort_start); 25138defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(abort_instructions <= kExpectedAbortInstructions); 25148defd9ff6930b4e24729971a61cf7469daf119beSteve Block while (abort_instructions++ < kExpectedAbortInstructions) { 25158defd9ff6930b4e24729971a61cf7469daf119beSteve Block nop(); 25168defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 25178defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 2518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2521d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::LoadContext(Register dst, int context_chain_length) { 2522d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (context_chain_length > 0) { 2523d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Move up the chain of contexts to the context containing the slot. 2524d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::CLOSURE_INDEX))); 2525d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Load the function context (which is the incoming, outer context). 2526d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 2527d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block for (int i = 1; i < context_chain_length; i++) { 2528d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); 2529d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 2530d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 2531e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } else { 2532e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Slot is in the current function context. Move it into the 2533e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // destination register in case we store into it (the write barrier 2534e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // cannot be allowed to destroy the context in esi). 2535e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(dst, cp); 2536e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 2537e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2538e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // We should not have found a 'with' context by walking the context chain 2539e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // (i.e., the static scope chain and runtime context chain do not agree). 2540e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // A variable occurring in such a scope should have slot type LOOKUP and 2541e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // not CONTEXT. 254244f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 2543e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(ip, MemOperand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); 2544e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(dst, ip); 2545e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Check(eq, "Yo dawg, I heard you liked function contexts " 2546e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch "so I put function contexts in all your contexts"); 2547d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 2548d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 2549d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 2550d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 25518a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wangvoid MacroAssembler::LoadGlobalFunction(int index, Register function) { 25528a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the global or builtins object from the current context. 25538a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(function, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 25548a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the global context from the global or builtins object. 25558a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(function, FieldMemOperand(function, 25568a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang GlobalObject::kGlobalContextOffset)); 25578a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the function from the global context. 25588a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(function, MemOperand(function, Context::SlotOffset(index))); 25598a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang} 25608a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 25618a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 25628a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wangvoid MacroAssembler::LoadGlobalFunctionInitialMap(Register function, 25638a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Register map, 25648a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Register scratch) { 25658a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the initial map. The global functions all have initial maps. 25668a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 256744f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 25688a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Label ok, fail; 2569257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, DO_SMI_CHECK); 25708a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang b(&ok); 25718a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang bind(&fail); 25728a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Abort("Global functions must have initial map"); 25738a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang bind(&ok); 25748a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang } 25758a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang} 25768a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 25778a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 25781e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::JumpIfNotPowerOfTwoOrZero( 25791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Register reg, 25801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Register scratch, 25811e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Label* not_power_of_two_or_zero) { 25821e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block sub(scratch, reg, Operand(1), SetCC); 25831e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(mi, not_power_of_two_or_zero); 25841e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block tst(scratch, reg); 25851e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(ne, not_power_of_two_or_zero); 25861e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 25871e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 25881e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 258944f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::JumpIfNotPowerOfTwoOrZeroAndNeg( 259044f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register reg, 259144f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register scratch, 259244f0eee88ff00398ff7f715fab053374d808c90dSteve Block Label* zero_and_neg, 259344f0eee88ff00398ff7f715fab053374d808c90dSteve Block Label* not_power_of_two) { 259444f0eee88ff00398ff7f715fab053374d808c90dSteve Block sub(scratch, reg, Operand(1), SetCC); 259544f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(mi, zero_and_neg); 259644f0eee88ff00398ff7f715fab053374d808c90dSteve Block tst(scratch, reg); 259744f0eee88ff00398ff7f715fab053374d808c90dSteve Block b(ne, not_power_of_two); 259844f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 259944f0eee88ff00398ff7f715fab053374d808c90dSteve Block 260044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 26013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfNotBothSmi(Register reg1, 26023100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 26033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_not_both_smi) { 26041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block STATIC_ASSERT(kSmiTag == 0); 26053100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 26063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), eq); 26073100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, on_not_both_smi); 26083100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 26093100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 26103100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 26113100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfEitherSmi(Register reg1, 26123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 26133100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_either_smi) { 26141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block STATIC_ASSERT(kSmiTag == 0); 26153100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 26163100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), ne); 26173100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(eq, on_either_smi); 26183100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 26193100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 26203100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 2621756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AbortIfSmi(Register object) { 26221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block STATIC_ASSERT(kSmiTag == 0); 2623756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick tst(object, Operand(kSmiTagMask)); 2624756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Assert(ne, "Operand is a smi"); 2625756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 2626756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 2627756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 26281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::AbortIfNotSmi(Register object) { 26291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block STATIC_ASSERT(kSmiTag == 0); 26301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block tst(object, Operand(kSmiTagMask)); 26311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Assert(eq, "Operand is not smi"); 26321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 26331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 26341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 2635e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::AbortIfNotString(Register object) { 2636e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch STATIC_ASSERT(kSmiTag == 0); 2637e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch tst(object, Operand(kSmiTagMask)); 2638e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Assert(ne, "Operand is not a string"); 2639e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch push(object); 2640e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(object, FieldMemOperand(object, HeapObject::kMapOffset)); 2641e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch CompareInstanceType(object, object, FIRST_NONSTRING_TYPE); 2642e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch pop(object); 2643e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Assert(lo, "Operand is not a string"); 2644e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 2645e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2646e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2647e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 26481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::AbortIfNotRootValue(Register src, 26491e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Heap::RootListIndex root_value_index, 26501e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const char* message) { 2651e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch CompareRoot(src, root_value_index); 26521e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Assert(eq, message); 26531e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 26541e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 26551e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 26561e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::JumpIfNotHeapNumber(Register object, 26571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Register heap_number_map, 26581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Register scratch, 26591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Label* on_not_heap_number) { 26601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); 26611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); 26621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block cmp(scratch, heap_number_map); 26631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block b(ne, on_not_heap_number); 26641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 26651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 26661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 2667d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNonSmisNotBothSequentialAsciiStrings( 2668d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register first, 2669d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 2670d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 2671d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 2672d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 2673d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Test that both first and second are sequential ASCII strings. 2674d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Assume that they are non-smis. 2675d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); 2676d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); 2677d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); 2678d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); 26796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 26806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpIfBothInstanceTypesAreNotSequentialAscii(scratch1, 26816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 26826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 26836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 26846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block failure); 2685d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 2686d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 2687d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first, 2688d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 2689d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 2690d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 2691d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 2692d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Check that neither is a smi. 26931e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block STATIC_ASSERT(kSmiTag == 0); 2694d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke and_(scratch1, first, Operand(second)); 2695d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke tst(scratch1, Operand(kSmiTagMask)); 2696d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke b(eq, failure); 2697d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke JumpIfNonSmisNotBothSequentialAsciiStrings(first, 2698d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke second, 2699d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch1, 2700d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch2, 2701d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke failure); 2702d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 2703d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 2704d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 27056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Allocates a heap number or jumps to the need_gc label if the young space 27066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// is full and a scavenge is needed. 27076ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::AllocateHeapNumber(Register result, 27086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 27096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 27109dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register heap_number_map, 27116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* gc_required) { 27126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Allocate an object in the heap for the heap number and tag it as a heap 27136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // object. 271425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(HeapNumber::kSize, 27156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block result, 27166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 27176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 27186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block gc_required, 27196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TAG_OBJECT); 27206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 27219dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Store heap number map in the allocated object. 27229dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); 27239dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen str(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); 27246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 27256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 27266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 27278defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::AllocateHeapNumberWithValue(Register result, 27288defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 27298defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 27308defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 27318defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 27328defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* gc_required) { 27338defd9ff6930b4e24729971a61cf7469daf119beSteve Block AllocateHeapNumber(result, scratch1, scratch2, heap_number_map, gc_required); 27348defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch1, result, Operand(kHeapObjectTag)); 27358defd9ff6930b4e24729971a61cf7469daf119beSteve Block vstr(value, scratch1, HeapNumber::kValueOffset); 27368defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 27378defd9ff6930b4e24729971a61cf7469daf119beSteve Block 27388defd9ff6930b4e24729971a61cf7469daf119beSteve Block 2739bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch// Copies a fixed number of fields of heap objects from src to dst. 2740bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdochvoid MacroAssembler::CopyFields(Register dst, 2741bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register src, 2742bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch RegList temps, 2743bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch int field_count) { 2744bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // At least one bit set in the first 15 registers. 2745bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & ((1 << 15) - 1)) != 0); 2746bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & dst.bit()) == 0); 2747bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & src.bit()) == 0); 2748bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Primitive implementation using only one temporary register. 2749bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 2750bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register tmp = no_reg; 2751bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Find a temp register in temps list. 2752bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < 15; i++) { 2753bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch if ((temps & (1 << i)) != 0) { 2754bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch tmp.set_code(i); 2755bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch break; 2756bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 2757bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 2758bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT(!tmp.is(no_reg)); 2759bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 2760bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < field_count; i++) { 2761bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ldr(tmp, FieldMemOperand(src, i * kPointerSize)); 2762bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch str(tmp, FieldMemOperand(dst, i * kPointerSize)); 2763bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 2764bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch} 2765bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 2766bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 2767e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid MacroAssembler::CopyBytes(Register src, 2768e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register dst, 2769e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register length, 2770e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Register scratch) { 2771e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Label align_loop, align_loop_1, word_loop, byte_loop, byte_loop_1, done; 2772e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2773e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Align src before copying in word size chunks. 2774e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&align_loop); 2775e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(length, Operand(0)); 2776e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(eq, &done); 2777e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&align_loop_1); 2778e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch tst(src, Operand(kPointerSize - 1)); 2779e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(eq, &word_loop); 2780e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldrb(scratch, MemOperand(src, 1, PostIndex)); 2781e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch strb(scratch, MemOperand(dst, 1, PostIndex)); 2782e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch sub(length, length, Operand(1), SetCC); 2783e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(ne, &byte_loop_1); 2784e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2785e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Copy bytes in word size chunks. 2786e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&word_loop); 278744f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 2788e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch tst(src, Operand(kPointerSize - 1)); 2789e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Assert(eq, "Expecting alignment for CopyBytes"); 2790e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 2791e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(length, Operand(kPointerSize)); 2792e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(lt, &byte_loop); 2793e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldr(scratch, MemOperand(src, kPointerSize, PostIndex)); 2794e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#if CAN_USE_UNALIGNED_ACCESSES 2795e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch str(scratch, MemOperand(dst, kPointerSize, PostIndex)); 2796e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#else 2797e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch strb(scratch, MemOperand(dst, 1, PostIndex)); 2798e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(scratch, Operand(scratch, LSR, 8)); 2799e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch strb(scratch, MemOperand(dst, 1, PostIndex)); 2800e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(scratch, Operand(scratch, LSR, 8)); 2801e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch strb(scratch, MemOperand(dst, 1, PostIndex)); 2802e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch mov(scratch, Operand(scratch, LSR, 8)); 2803e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch strb(scratch, MemOperand(dst, 1, PostIndex)); 2804e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#endif 2805e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch sub(length, length, Operand(kPointerSize)); 2806e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(&word_loop); 2807e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2808e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Copy the last bytes if any left. 2809e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&byte_loop); 2810e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch cmp(length, Operand(0)); 2811e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(eq, &done); 2812e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&byte_loop_1); 2813e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ldrb(scratch, MemOperand(src, 1, PostIndex)); 2814e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch strb(scratch, MemOperand(dst, 1, PostIndex)); 2815e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch sub(length, length, Operand(1), SetCC); 2816e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch b(ne, &byte_loop_1); 2817e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch bind(&done); 2818e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 2819e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 2820e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 28218defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::CountLeadingZeros(Register zeros, // Answer. 28228defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register source, // Input. 28238defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 28241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(!zeros.is(source) || !source.is(scratch)); 28258defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(scratch)); 28268defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!scratch.is(ip)); 28278defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!source.is(ip)); 28288defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(ip)); 28296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#ifdef CAN_USE_ARMV5_INSTRUCTIONS 28306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block clz(zeros, source); // This instruction is only supported after ARM5. 28316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 28329ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(zeros, Operand(0, RelocInfo::NONE)); 28338defd9ff6930b4e24729971a61cf7469daf119beSteve Block Move(scratch, source); 28346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 16. 28356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xffff0000)); 28366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(16), LeaveCC, eq); 28376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 16), LeaveCC, eq); 28386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 8. 28396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xff000000)); 28406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(8), LeaveCC, eq); 28416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 8), LeaveCC, eq); 28426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 4. 28436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xf0000000)); 28446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(4), LeaveCC, eq); 28456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 4), LeaveCC, eq); 28466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 2. 28476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xc0000000)); 28486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(2), LeaveCC, eq); 28496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 2), LeaveCC, eq); 28506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top bit. 28516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0x80000000u)); 28526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(1), LeaveCC, eq); 28536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 28546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 28556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 28566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 28576ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialAscii( 28586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register first, 28596ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register second, 28606ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 28616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 28626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 28636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 28646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 28656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 28666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch1, first, Operand(kFlatAsciiStringMask)); 28676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch2, second, Operand(kFlatAsciiStringMask)); 28686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch1, Operand(kFlatAsciiStringTag)); 28696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Ignore second test if first test failed. 28706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch2, Operand(kFlatAsciiStringTag), eq); 28716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 28726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 28736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 28746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 28756ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(Register type, 28766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 28776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 28786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 28796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 28806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 28816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, type, Operand(kFlatAsciiStringMask)); 28826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(kFlatAsciiStringTag)); 28836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 28846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 28856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 288644f0eee88ff00398ff7f715fab053374d808c90dSteve Blockstatic const int kRegisterPassedArguments = 4; 28876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 288844f0eee88ff00398ff7f715fab053374d808c90dSteve Block 2889257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochint MacroAssembler::CalculateStackPassedWords(int num_reg_arguments, 2890257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_double_arguments) { 2891257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int stack_passed_words = 0; 2892257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (use_eabi_hardfloat()) { 2893257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // In the hard floating point calling convention, we can use 2894257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // all double registers to pass doubles. 2895257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (num_double_arguments > DoubleRegister::kNumRegisters) { 2896257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch stack_passed_words += 2897257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2 * (num_double_arguments - DoubleRegister::kNumRegisters); 2898257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2899257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 2900257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // In the soft floating point calling convention, every double 2901257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // argument is passed using two registers. 2902257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_reg_arguments += 2 * num_double_arguments; 2903257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 29046ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Up to four simple arguments are passed in registers r0..r3. 2905257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (num_reg_arguments > kRegisterPassedArguments) { 2906257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch stack_passed_words += num_reg_arguments - kRegisterPassedArguments; 2907257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2908257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return stack_passed_words; 2909257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2910257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2911257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2912257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::PrepareCallCFunction(int num_reg_arguments, 2913257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_double_arguments, 2914257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register scratch) { 2915257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int frame_alignment = ActivationFrameAlignment(); 2916257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int stack_passed_arguments = CalculateStackPassedWords( 2917257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_reg_arguments, num_double_arguments); 29186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 29196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make stack end at alignment and make room for num_arguments - 4 words 29206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // and the original value of sp. 29216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, sp); 29226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); 29236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 29246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(sp, sp, Operand(-frame_alignment)); 29256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); 29266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 29276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand(stack_passed_arguments * kPointerSize)); 29286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 29296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 29306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 29316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2932257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::PrepareCallCFunction(int num_reg_arguments, 2933257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register scratch) { 2934257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch PrepareCallCFunction(num_reg_arguments, 0, scratch); 2935257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2936257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2937257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2938257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::SetCallCDoubleArguments(DoubleRegister dreg) { 2939257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (use_eabi_hardfloat()) { 2940257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(d0, dreg); 2941257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 2942257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(r0, r1, dreg); 2943257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2944257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2945257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2946257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2947257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::SetCallCDoubleArguments(DoubleRegister dreg1, 2948257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch DoubleRegister dreg2) { 2949257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (use_eabi_hardfloat()) { 2950257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (dreg2.is(d0)) { 2951257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(!dreg1.is(d1)); 2952257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(d1, dreg2); 2953257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(d0, dreg1); 2954257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 2955257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(d0, dreg1); 2956257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(d1, dreg2); 2957257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2958257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 2959257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(r0, r1, dreg1); 2960257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(r2, r3, dreg2); 2961257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2962257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2963257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2964257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2965257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::SetCallCDoubleArguments(DoubleRegister dreg, 2966257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register reg) { 2967257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (use_eabi_hardfloat()) { 2968257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(d0, dreg); 2969257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(r0, reg); 2970257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 2971257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Move(r2, reg); 2972257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(r0, r1, dreg); 2973257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2974257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2975257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2976257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 29776ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(ExternalReference function, 2978257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_reg_arguments, 2979257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_double_arguments) { 2980257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallCFunctionHelper(no_reg, 2981257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch function, 2982257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ip, 2983257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_reg_arguments, 2984257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_double_arguments); 29856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 29866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2987257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 298844f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::CallCFunction(Register function, 2989257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register scratch, 2990257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_reg_arguments, 2991257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_double_arguments) { 299244f0eee88ff00398ff7f715fab053374d808c90dSteve Block CallCFunctionHelper(function, 299344f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference::the_hole_value_location(isolate()), 299444f0eee88ff00398ff7f715fab053374d808c90dSteve Block scratch, 2995257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_reg_arguments, 2996257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_double_arguments); 2997257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2998257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2999257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3000257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::CallCFunction(ExternalReference function, 3001257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_arguments) { 3002257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallCFunction(function, num_arguments, 0); 3003257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 3004257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3005257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3006257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::CallCFunction(Register function, 3007257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register scratch, 3008257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_arguments) { 3009257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch CallCFunction(function, scratch, num_arguments, 0); 301044f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 301144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 301244f0eee88ff00398ff7f715fab053374d808c90dSteve Block 301344f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid MacroAssembler::CallCFunctionHelper(Register function, 301444f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference function_reference, 301544f0eee88ff00398ff7f715fab053374d808c90dSteve Block Register scratch, 3016257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_reg_arguments, 3017257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int num_double_arguments) { 30186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make sure that the stack is aligned before calling a C function unless 30196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // running in the simulator. The simulator has its own alignment check which 30206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // provides more information. 30216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if defined(V8_HOST_ARCH_ARM) 302244f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 30236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = OS::ActivationFrameAlignment(); 30246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 30256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 30266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 30276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label alignment_as_expected; 30286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand(frame_alignment_mask)); 30296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(eq, &alignment_as_expected); 30306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Don't use Check here, as it will call Runtime_Abort possibly 30316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // re-entering here. 30326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block stop("Unexpected alignment"); 30336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(&alignment_as_expected); 30346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 30356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 30366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 30376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 30386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Just call directly. The function called cannot cause a GC, or 30396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // allow preemption, so the return address in the link register 30406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // stays correct. 304144f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (function.is(no_reg)) { 304244f0eee88ff00398ff7f715fab053374d808c90dSteve Block mov(scratch, Operand(function_reference)); 304344f0eee88ff00398ff7f715fab053374d808c90dSteve Block function = scratch; 304444f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 30456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Call(function); 3046257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int stack_passed_arguments = CalculateStackPassedWords( 3047257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch num_reg_arguments, num_double_arguments); 3048257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (ActivationFrameAlignment() > kPointerSize) { 30496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); 30506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 30516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(sp, sp, Operand(stack_passed_arguments * sizeof(kPointerSize))); 30526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 30536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 30546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 30556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 30561e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid MacroAssembler::GetRelocatedValueLocation(Register ldr_location, 30571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Register result) { 30581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const uint32_t kLdrOffsetMask = (1 << 12) - 1; 30591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const int32_t kPCRegOffset = 2 * kPointerSize; 30601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(result, MemOperand(ldr_location)); 306144f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (emit_debug_code()) { 30621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Check that the instruction is a ldr reg, [pc + offset] . 30631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block and_(result, result, Operand(kLdrPCPattern)); 30641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block cmp(result, Operand(kLdrPCPattern)); 30651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Check(eq, "The instruction to patch should be a load from pc."); 30661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Result was clobbered. Restore it. 30671e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ldr(result, MemOperand(ldr_location)); 30681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 30691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Get the address of the constant. 30701e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block and_(result, result, Operand(kLdrOffsetMask)); 30711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(result, ldr_location, Operand(result)); 30721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block add(result, result, Operand(kPCRegOffset)); 30731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 30741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 30751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 3076257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::ClampUint8(Register output_reg, Register input_reg) { 3077257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Usat(output_reg, 8, Operand(input_reg)); 3078257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 3079257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3080257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3081257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::ClampDoubleToUint8(Register result_reg, 3082257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch DoubleRegister input_reg, 3083257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch DoubleRegister temp_double_reg) { 3084257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Label above_zero; 3085257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Label done; 3086257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Label in_bounds; 3087257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3088257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(temp_double_reg, 0.0); 3089257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch VFPCompareAndSetFlags(input_reg, temp_double_reg); 3090257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch b(gt, &above_zero); 3091257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3092257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // Double value is less than zero, NaN or Inf, return 0. 3093257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(result_reg, Operand(0)); 3094257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch b(al, &done); 3095257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3096257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // Double value is >= 255, return 255. 3097257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bind(&above_zero); 3098257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(temp_double_reg, 255.0); 3099257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch VFPCompareAndSetFlags(input_reg, temp_double_reg); 3100257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch b(le, &in_bounds); 3101257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(result_reg, Operand(255)); 3102257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch b(al, &done); 3103257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3104257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // In 0-255 range, round and truncate. 3105257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bind(&in_bounds); 3106257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(temp_double_reg, 0.5); 3107257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vadd(temp_double_reg, input_reg, temp_double_reg); 3108257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vcvt_u32_f64(s0, temp_double_reg); 3109257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch vmov(result_reg, s0); 3110257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bind(&done); 3111257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 3112257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3113257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3114257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid MacroAssembler::LoadInstanceDescriptors(Register map, 3115257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Register descriptors) { 3116257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ldr(descriptors, 3117257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch FieldMemOperand(map, Map::kInstanceDescriptorsOrBitField3Offset)); 3118257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Label not_smi; 3119257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch JumpIfNotSmi(descriptors, ¬_smi); 3120257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch mov(descriptors, Operand(FACTORY->empty_descriptor_array())); 3121257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bind(¬_smi); 3122257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 3123257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3124257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 3125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::CodePatcher(byte* address, int instructions) 3126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : address_(address), 3127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block instructions_(instructions), 3128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block size_(instructions * Assembler::kInstrSize), 31298b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch masm_(Isolate::Current(), address, size_ + Assembler::kGap) { 3130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create a new macro assembler pointing to the address of the code to patch. 3131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The size is adjusted with kGap on order for the assembler to generate size 3132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bytes of instructions without failing with buffer size constraints. 3133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 3134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 3135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::~CodePatcher() { 3138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Indicate that code has changed. 3139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CPU::FlushICache(address_, size_); 3140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the code was patched as expected. 3142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.pc_ == address_ + size_); 3143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 3144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 3145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 31471e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid CodePatcher::Emit(Instr instr) { 31481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block masm()->emit(instr); 3149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 3150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Address addr) { 3153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(reinterpret_cast<Instr>(addr)); 3154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 31551e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 31561e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 31571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockvoid CodePatcher::EmitCondition(Condition cond) { 31581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Instr instr = Assembler::instr_at(masm_.pc_); 31591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block instr = (instr & ~kCondMask) | cond; 31601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block masm_.emit(instr); 31611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 3162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 3165f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 3166f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#endif // V8_TARGET_ARCH_ARM 3167