macro-assembler-arm.cc revision 791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6
1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2006-2009 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 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "v8.h" 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 30f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#if defined(V8_TARGET_ARCH_ARM) 31f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "bootstrapper.h" 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "codegen-inl.h" 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "debug.h" 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "runtime.h" 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockMacroAssembler::MacroAssembler(void* buffer, int size) 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : Assembler(buffer, size), 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block generating_stub_(false), 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block allow_stub_calls_(true), 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block code_object_(Heap::undefined_value()) { 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We always generate arm code, never thumb code, even if V8 is compiled to 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// thumb, so we require inter-working support 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) && !defined(USE_THUMB_INTERWORK) 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#error "flag -mthumb-interwork missing" 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We do not support thumb inter-working with an arm architecture not supporting 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the blx instruction (below v5t). If you know what CPU you are compiling for 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// you can use -march=armv7 or similar. 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(USE_THUMB_INTERWORK) && !defined(CAN_USE_THUMB_INSTRUCTIONS) 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block# error "For thumb inter-working we require an architecture which supports blx" 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Using bx does not yield better code, so use it only when required 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(USE_THUMB_INTERWORK) 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define USE_BX 1 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(Register target, Condition cond) { 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(target, cond); 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target), LeaveCC, cond); 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(intptr_t target, RelocInfo::Mode rmode, 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(target, rmode), LeaveCC, cond); 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(ip, cond); 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target, rmode), LeaveCC, cond); 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(byte* target, RelocInfo::Mode rmode, 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!RelocInfo::IsCodeTarget(rmode)); 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(reinterpret_cast<intptr_t>(target), rmode, cond); 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(Handle<Code> code, RelocInfo::Mode rmode, 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsCodeTarget(rmode)); 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 'code' is always generated ARM code, never THUMB code 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(Register target, Condition cond) { 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BLX 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block blx(target, cond); 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // set lr for return at current pc + 8 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(lr, Operand(pc), LeaveCC, cond); 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target), LeaveCC, cond); 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(intptr_t target, RelocInfo::Mode rmode, 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 1176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if USE_BLX 1186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // On ARMv5 and after the recommended call sequence is: 1196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // ldr ip, [pc, #...] 1206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // blx ip 1216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The two instructions (ldr and blx) could be separated by a constant 1236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // pool and the code would still work. The issue comes from the 1246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // patching code which expect the ldr to be just above the blx. 1256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block { BlockConstPoolScope block_const_pool(this); 1266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Statement positions are expected to be recorded when the target 1276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // address is loaded. The mov method will automatically record 1286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // positions when pc is the target, since this is not the case here 1296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // we have to do it explicitly. 1306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block WriteRecordedPositions(); 1316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(ip, Operand(target, rmode), LeaveCC, cond); 1336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block blx(ip, cond); 1346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 1356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(kCallTargetAddressOffset == 2 * kInstrSize); 1376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set lr for return at current pc + 8. 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(lr, Operand(pc), LeaveCC, cond); 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ldr<cond> pc, [pc + offset of target in constant pool]. 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target, rmode), LeaveCC, cond); 1426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(kCallTargetAddressOffset == kInstrSize); 1446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(byte* target, RelocInfo::Mode rmode, 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!RelocInfo::IsCodeTarget(rmode)); 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(reinterpret_cast<intptr_t>(target), rmode, cond); 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(Handle<Code> code, RelocInfo::Mode rmode, 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsCodeTarget(rmode)); 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 'code' is always generated ARM code, never THUMB code 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Ret(Condition cond) { 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(lr, cond); 166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(lr), LeaveCC, cond); 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 172d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::StackLimitCheck(Label* on_stack_overflow) { 173d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block LoadRoot(ip, Heap::kStackLimitRootIndex); 174d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block cmp(sp, Operand(ip)); 175d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block b(lo, on_stack_overflow); 176d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 177d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 178d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 179e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Drop(int count, Condition cond) { 180e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke if (count > 0) { 181e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(count * kPointerSize), LeaveCC, cond); 182e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke } 183e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 184e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 185e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 1867f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::Swap(Register reg1, 1877f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register reg2, 1887f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 1897f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Condition cond) { 1906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (scratch.is(no_reg)) { 1917f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 1927f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg2, reg2, Operand(reg1), LeaveCC, cond); 1937f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 1946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 1957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(scratch, reg1, LeaveCC, cond); 1967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg1, reg2, LeaveCC, cond); 1977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg2, scratch, LeaveCC, cond); 1986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 1996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 202e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Call(Label* target) { 203e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke bl(target); 204e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 205e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 206e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 207e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Move(Register dst, Handle<Object> value) { 208e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(dst, Operand(value)); 209e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 210d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 211d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 2126ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::Move(Register dst, Register src) { 2136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (!dst.is(src)) { 2146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(dst, src); 2156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 2166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2199dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::And(Register dst, Register src1, const Operand& src2, 2209dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2219dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7) || src2.is_single_instruction()) { 2229dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, src2, LeaveCC, cond); 2239dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen return; 2249dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2259dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int32_t immediate = src2.immediate(); 2269dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (immediate == 0) { 2279dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(0), LeaveCC, cond); 2289dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen return; 2299dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2309dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (IsPowerOf2(immediate + 1) && ((immediate & 1) != 0)) { 2319dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ubfx(dst, src1, 0, WhichPowerOf2(immediate + 1), cond); 2329dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen return; 2339dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2349dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, src2, LeaveCC, cond); 2359dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2369dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2379dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2389dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Ubfx(Register dst, Register src1, int lsb, int width, 2399dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2409dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2419dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2429dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2439dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 2449dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (lsb != 0) { 2459dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSR, lsb), LeaveCC, cond); 2469dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ubfx(dst, src1, lsb, width, cond); 2499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2509dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2529dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2539dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Sbfx(Register dst, Register src1, int lsb, int width, 2549dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2559dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 2599dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_up = 32 - lsb - width; 2609dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_down = lsb + shift_up; 2619dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_up != 0) { 2629dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSL, shift_up), LeaveCC, cond); 2639dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2649dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_down != 0) { 2659dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, ASR, shift_down), LeaveCC, cond); 2669dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2679dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2689dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen sbfx(dst, src1, lsb, width, cond); 2699dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2709dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2719dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2729dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2739dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Bfc(Register dst, int lsb, int width, Condition cond) { 2749dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2759dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2769dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2779dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bic(dst, dst, Operand(mask)); 2789dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2799dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bfc(dst, lsb, width, cond); 2809dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2819dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2829dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2839dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 28450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsenvoid MacroAssembler::Usat(Register dst, int satpos, const Operand& src, 28550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Condition cond) { 28650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 28750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(!dst.is(pc) && !src.rm().is(pc)); 28850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((satpos >= 0) && (satpos <= 31)); 28950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // These asserts are required to ensure compatibility with the ARMv7 29150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // implementation. 29250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((src.shift_op() == ASR) || (src.shift_op() == LSL)); 29350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(src.rs().is(no_reg)); 29450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Label done; 29650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen int satval = (1 << satpos) - 1; 29750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (cond != al) { 29950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(NegateCondition(cond), &done); // Skip saturate if !condition. 30050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 30150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!(src.is_reg() && dst.is(src.rm()))) { 30250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, src); 30350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 30450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen tst(dst, Operand(~satval)); 30550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(eq, &done); 30650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, Operand(0), LeaveCC, mi); // 0 if negative. 30750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, Operand(satval), LeaveCC, pl); // satval if positive. 30850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen bind(&done); 30950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } else { 31050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen usat(dst, satpos, src, cond); 31150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 31250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen} 31350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 31450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { 316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Empty the const pool. 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CheckConstPool(true, true); 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(pc, pc, Operand(index, 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LSL, 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assembler::arm::Instr::kInstrSizeLog2 - kSmiTagSize)); 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); 322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block nop(); // Jump table alignment. 323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < targets.length(); i++) { 324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(targets[i]); 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LoadRoot(Register destination, 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Heap::RootListIndex index, 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 3323100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(destination, MemOperand(roots, index << kPointerSizeLog2), cond); 333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 33625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsenvoid MacroAssembler::StoreRoot(Register source, 33725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Heap::RootListIndex index, 33825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Condition cond) { 33925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen str(source, MemOperand(roots, index << kPointerSizeLog2), cond); 34025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen} 34125f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 34225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 3436ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::RecordWriteHelper(Register object, 3448defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 3458defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 3466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_debug_code) { 3476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Check that the object is not in new space. 3486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label not_in_new_space; 3498defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, ne, ¬_in_new_space); 3506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Abort("new-space object passed to RecordWriteHelper"); 3516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(¬_in_new_space); 3526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 3534515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 3547f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Calculate page address. 3559dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Bfc(object, 0, kPageSizeBits); 3569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Calculate region number. 3588defd9ff6930b4e24729971a61cf7469daf119beSteve Block Ubfx(address, address, Page::kRegionSizeLog2, 3599dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen kPageSizeBits - Page::kRegionSizeLog2); 360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3617f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Mark region dirty. 3628defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(1)); 3648defd9ff6930b4e24729971a61cf7469daf119beSteve Block orr(scratch, scratch, Operand(ip, LSL, address)); 3658defd9ff6930b4e24729971a61cf7469daf119beSteve Block str(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 3666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3696ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InNewSpace(Register object, 3706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 3716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Condition cc, 3726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* branch) { 3736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(cc == eq || cc == ne); 3746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, object, Operand(ExternalReference::new_space_mask())); 3756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(ExternalReference::new_space_start())); 3766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(cc, branch); 3776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Will clobber 4 registers: object, offset, scratch, ip. The 3816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// register 'object' contains a heap object pointer. The heap object 3826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// tag is shifted away. 3839dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::RecordWrite(Register object, 3849dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Operand offset, 3859dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch0, 3869dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch1) { 3876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The compiled code assumes that record write doesn't change the 3886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // context register, so we check that none of the clobbered 3896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // registers are cp. 3909dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(!object.is(cp) && !scratch0.is(cp) && !scratch1.is(cp)); 3916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label done; 3936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // First, test that the object is not in the new space. We cannot set 3957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // region marks for new space pages. 3969dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen InNewSpace(object, scratch0, eq, &done); 3976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3988defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Add offset into the object. 3998defd9ff6930b4e24729971a61cf7469daf119beSteve Block add(scratch0, object, offset); 4008defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Record the actual write. 4028defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, scratch0, scratch1); 403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 4054515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 4064515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // Clobber all input registers when running with the debug-code flag 4074515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // turned on to provoke errors. 4084515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke if (FLAG_debug_code) { 4096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 4109dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch0, Operand(BitCast<int32_t>(kZapValue))); 4119dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch1, Operand(BitCast<int32_t>(kZapValue))); 4124515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke } 413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4168defd9ff6930b4e24729971a61cf7469daf119beSteve Block// Will clobber 4 registers: object, address, scratch, ip. The 4178defd9ff6930b4e24729971a61cf7469daf119beSteve Block// register 'object' contains a heap object pointer. The heap object 4188defd9ff6930b4e24729971a61cf7469daf119beSteve Block// tag is shifted away. 4198defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::RecordWrite(Register object, 4208defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 4218defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 4228defd9ff6930b4e24729971a61cf7469daf119beSteve Block // The compiled code assumes that record write doesn't change the 4238defd9ff6930b4e24729971a61cf7469daf119beSteve Block // context register, so we check that none of the clobbered 4248defd9ff6930b4e24729971a61cf7469daf119beSteve Block // registers are cp. 4258defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!object.is(cp) && !address.is(cp) && !scratch.is(cp)); 4268defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4278defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 4288defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4298defd9ff6930b4e24729971a61cf7469daf119beSteve Block // First, test that the object is not in the new space. We cannot set 4308defd9ff6930b4e24729971a61cf7469daf119beSteve Block // region marks for new space pages. 4318defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, eq, &done); 4328defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4338defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Record the actual write. 4348defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, address, scratch); 4358defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4368defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 4378defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4388defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Clobber all input registers when running with the debug-code flag 4398defd9ff6930b4e24729971a61cf7469daf119beSteve Block // turned on to provoke errors. 4408defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (FLAG_debug_code) { 4418defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 4428defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(address, Operand(BitCast<int32_t>(kZapValue))); 4438defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch, Operand(BitCast<int32_t>(kZapValue))); 4448defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 4458defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 4468defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4478defd9ff6930b4e24729971a61cf7469daf119beSteve Block 448f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Ldrd(Register dst1, Register dst2, 449f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& src, Condition cond) { 450f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(src.rm().is(no_reg)); 451f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!dst1.is(lr)); // r14. 452f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, dst1.code() % 2); 453f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(dst1.code() + 1, dst2.code()); 454f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 455f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two ldr instructions if ldrd is not available. 456f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (CpuFeatures::IsSupported(ARMv7)) { 457f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 458f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldrd(dst1, dst2, src, cond); 459f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 460f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand src2(src); 461f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke src2.set_offset(src2.offset() + 4); 462f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (dst1.is(src.rn())) { 463f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 464f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 465f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 466f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 467f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 468f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 469f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 470f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 471f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 472f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 473f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Strd(Register src1, Register src2, 474f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& dst, Condition cond) { 475f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(dst.rm().is(no_reg)); 476f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!src1.is(lr)); // r14. 477f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, src1.code() % 2); 478f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(src1.code() + 1, src2.code()); 479f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 480f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two str instructions if strd is not available. 481f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (CpuFeatures::IsSupported(ARMv7)) { 482f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 483f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke strd(src1, src2, dst, cond); 484f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 485f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand dst2(dst); 486f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke dst2.set_offset(dst2.offset() + 4); 487f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src1, dst, cond); 488f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src2, dst2, cond); 489f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 490f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 491f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 492f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 493a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::EnterFrame(StackFrame::Type type) { 494a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0-r3: preserved 495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, cp.bit() | fp.bit() | lr.bit()); 496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(Smi::FromInt(type))); 497a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(CodeObject())); 499a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 500a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(fp, sp, Operand(3 * kPointerSize)); // Adjust FP to point to saved FP. 501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LeaveFrame(StackFrame::Type type) { 505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: preserved 506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: preserved 507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: preserved 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Drop the execution stack down to the frame pointer and restore 510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the caller frame pointer and return address. 511a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, fp); 512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia_w, sp, fp.bit() | lr.bit()); 513a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 516d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::EnterExitFrame(ExitFrame::Mode mode) { 517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the argv pointer and keep it in a callee-saved register. 518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0 is argc. 519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r6, sp, Operand(r0, LSL, kPointerSizeLog2)); 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sub(r6, r6, Operand(kPointerSize)); 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute callee's stack pointer before making changes and save it as 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ip register so that it is restored as sp register on exit, thereby 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // popping the args. 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ip = sp + kPointerSize * #args; 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(ip, sp, Operand(r0, LSL, kPointerSizeLog2)); 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Prepare the stack to be aligned when calling into C. After this point there 5306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // are 5 pushes before the call into C, so the stack needs to be aligned after 5316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // 5 pushes. 5326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = ActivationFrameAlignment(); 5336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 5346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment != kPointerSize) { 5356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The following code needs to be more general if this assert does not hold. 5366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(frame_alignment == 2 * kPointerSize); 5376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // With 5 pushes left the frame must be unaligned at this point. 5386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(r7, Operand(Smi::FromInt(0))); 5396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand((frame_alignment - kPointerSize) & frame_alignment_mask)); 5406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block push(r7, eq); // Push if aligned to make it unaligned. 5416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 543a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Push in reverse order: caller_fp, sp_on_exit, and caller_pc. 544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, fp.bit() | ip.bit() | lr.bit()); 545402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(fp, Operand(sp)); // Setup new frame pointer. 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 547402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(ip, Operand(CodeObject())); 548402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu push(ip); // Accessed from ExitFrame::code_slot. 549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the frame pointer and the context in top. 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_c_entry_fp_address))); 552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(fp, MemOperand(ip)); 553a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_context_address))); 554a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(cp, MemOperand(ip)); 555a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 556a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Setup argc and the builtin function in callee-saved registers. 557a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r4, Operand(r0)); 558a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r5, Operand(r1)); 559a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the state of all registers to the stack from the memory 563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // location. This is needed to allow nested break points. 564d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (mode == ExitFrame::MODE_DEBUG) { 565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use sp as base to push. 566a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CopyRegistersFromMemoryToStack(sp, kJSCallerSaved); 567a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5726ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InitializeNewString(Register string, 5736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register length, 5746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::RootListIndex map_index, 5756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 5766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2) { 5776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(length, LSL, kSmiTagSize)); 5786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block LoadRoot(scratch2, map_index); 5796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kLengthOffset)); 5806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(String::kEmptyHashField)); 5816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); 5826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); 5836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 5846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5866ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockint MacroAssembler::ActivationFrameAlignment() { 587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(V8_HOST_ARCH_ARM) 588a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Running on the real platform. Use the alignment as mandated by the local 589a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // environment. 590a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: This will break if we ever start generating snapshots on one ARM 591a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // platform for another ARM platform with a different alignment. 5926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return OS::ActivationFrameAlignment(); 593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else // defined(V8_HOST_ARCH_ARM) 594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we are using the simulator then we should always align to the expected 595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // alignment. As the simulator is used to generate snapshots we do not know 5966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // if the target platform will need alignment, so this is controlled from a 5976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // flag. 5986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return FLAG_sim_stack_alignment; 599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // defined(V8_HOST_ARCH_ARM) 600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 603d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::LeaveExitFrame(ExitFrame::Mode mode) { 604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore the memory copy of the registers by digging them out from 606a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the stack. This is needed to allow nested break points. 607d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (mode == ExitFrame::MODE_DEBUG) { 608a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This code intentionally clobbers r2 and r3. 609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const int kCallerSavedSize = kNumJSCallerSaved * kPointerSize; 610d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block const int kOffset = ExitFrameConstants::kCodeOffset - kCallerSavedSize; 611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r3, fp, Operand(kOffset)); 612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CopyRegistersFromStackToMemory(r3, r2, kJSCallerSaved); 613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Clear top frame. 617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(0)); 618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_c_entry_fp_address))); 619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 621a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore current context from top and clear it in debug mode. 622a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_context_address))); 623a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, MemOperand(ip)); 624a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 625a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 626a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Pop the arguments, restore registers, and return. 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, Operand(fp)); // respect ABI stack constraint 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia, sp, fp.bit() | sp.bit() | pc.bit()); 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokePrologue(const ParameterCount& expected, 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 636a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> code_constant, 637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg, 638a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* done, 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool definitely_matches = false; 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label regular_invoke; 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether the expected and actual arguments count match. If not, 644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setup registers according to contract with ArgumentsAdaptorTrampoline: 645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: actual arguments count 646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: function (passed through to callee) 647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: expected arguments count 648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r3: callee code entry 649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The code below is made a lot easier because the calling code already sets 651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // up actual and expected registers according to the contract if values are 652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // passed in registers. 653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate() || actual.reg().is(r0)); 654a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(expected.is_immediate() || expected.reg().is(r2)); 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((!code_constant.is_null() && code_reg.is(no_reg)) || code_reg.is(r3)); 656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.is_immediate()) { 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate()); 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == actual.immediate()) { 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == sentinel) { 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Don't worry about adapting arguments for builtins that 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // don't want that done. Skip adaption code by making it look 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // like we have a match between expected and actual number of 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments. 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r2, Operand(expected.immediate())); 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (actual.is_immediate()) { 676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.immediate())); 677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 678a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.reg())); 681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 683a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!definitely_matches) { 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!code_constant.is_null()) { 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(code_constant)); 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> adaptor = 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)); 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(adaptor, RelocInfo::CODE_TARGET); 695a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(done); 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(adaptor, RelocInfo::CODE_TARGET); 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(®ular_invoke); 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Register code, 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag); 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code); 713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flag == JUMP_FUNCTION); 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code); 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 719a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 720a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 721a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 722a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Handle<Code> code, 725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode, 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokePrologue(expected, actual, code, no_reg, &done, flag); 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code, rmode); 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code, rmode); 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeFunction(Register fun, 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Contract with called JS functions requires that function is passed in r1. 748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(fun.is(r1)); 749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register expected_reg = r2; 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg = r3; 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(expected_reg, 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(code_reg, 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SharedFunctionInfo::kFormalParameterCountOffset)); 7587f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(expected_reg, Operand(expected_reg, ASR, kSmiTagSize)); 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, 760791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 762a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ParameterCount expected(expected_reg); 763a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeCode(code_reg, expected, actual, flag); 764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 767402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::InvokeFunction(JSFunction* function, 768402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu const ParameterCount& actual, 769402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu InvokeFlag flag) { 770402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(function->is_compiled()); 771402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 772402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Get the function and setup the context. 773402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(Handle<JSFunction>(function))); 774402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 775402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 776402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Invoke the cached code. 777402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Handle<Code> code(function->code()); 778402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ParameterCount expected(function->shared()->formal_parameter_count()); 779402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag); 780402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 781402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SaveRegistersToMemory(RegList regs) { 784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((regs & ~kJSCallerSaved) == 0); 785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Copy the content of registers to memory location. 786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < kNumJSCallerSaved; i++) { 787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int r = JSCallerSavedCode(i); 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((regs & (1 << r)) != 0) { 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register reg = { r }; 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Debug_Address::Register(i)))); 791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(reg, MemOperand(ip)); 792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 793a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 794a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 797a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::RestoreRegistersFromMemory(RegList regs) { 798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((regs & ~kJSCallerSaved) == 0); 799a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Copy the content of memory location to registers. 800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = kNumJSCallerSaved; --i >= 0;) { 801a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int r = JSCallerSavedCode(i); 802a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((regs & (1 << r)) != 0) { 803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register reg = { r }; 804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Debug_Address::Register(i)))); 805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(reg, MemOperand(ip)); 806a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 809a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 810a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 811a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CopyRegistersFromMemoryToStack(Register base, 812a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RegList regs) { 813a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((regs & ~kJSCallerSaved) == 0); 814a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Copy the content of the memory location to the stack and adjust base. 815a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = kNumJSCallerSaved; --i >= 0;) { 816a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int r = JSCallerSavedCode(i); 817a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((regs & (1 << r)) != 0) { 818a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Debug_Address::Register(i)))); 819a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, MemOperand(ip)); 820a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(ip, MemOperand(base, 4, NegPreIndex)); 821a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 822a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 823a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 824a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 825a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 826a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CopyRegistersFromStackToMemory(Register base, 827a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 828a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RegList regs) { 829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((regs & ~kJSCallerSaved) == 0); 830a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Copy the content of the stack to the memory location and adjust base. 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < kNumJSCallerSaved; i++) { 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int r = JSCallerSavedCode(i); 833a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((regs & (1 << r)) != 0) { 834a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Debug_Address::Register(i)))); 835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(base, 4, PostIndex)); 836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch, MemOperand(ip)); 837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 840402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 841402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 842402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::DebugBreak() { 843402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(allow_stub_calls()); 844402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r0, Operand(0)); 845402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ExternalReference(Runtime::kDebugBreak))); 846402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub ces(1); 847402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); 848402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 849a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 852a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::PushTryHandler(CodeLocation try_location, 853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block HandlerType type) { 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adjust this code if not the case. 855a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); 856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The pc (return address) is passed in register lr. 857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (try_location == IN_JAVASCRIPT) { 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (type == TRY_CATCH_HANDLER) { 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_CATCH)); 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_FINALLY)); 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r3.bit() | fp.bit() | lr.bit()); 867a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 868a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(ExternalReference(Top::k_handler_address))); 869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r1, MemOperand(r3)); 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r1); 872a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r3)); 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Must preserve r0-r4, r5-r7 are available. 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(try_location == IN_JS_ENTRY); 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The frame pointer does not point to a JS frame so we save NULL 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for fp. We expect the code throwing an exception to check fp 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // before dereferencing it to restore the context. 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(0)); // To save a NULL frame pointer. 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r6, Operand(StackHandler::ENTRY)); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r6.bit() | ip.bit() | lr.bit()); 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r7, Operand(ExternalReference(Top::k_handler_address))); 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r6, MemOperand(r7)); 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r6); 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r7)); 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 897e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::PopTryHandler() { 898e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke ASSERT_EQ(0, StackHandlerConstants::kNextOffset); 899e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke pop(r1); 900e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(ip, Operand(ExternalReference(Top::k_handler_address))); 901e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); 902e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke str(r1, MemOperand(ip)); 903e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 904e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 905e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label same_contexts; 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(scratch)); 912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(ip)); 913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch.is(ip)); 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load current lexical context from the stack frame. 916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // In debug mode, make sure the lexical context is set. 918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 919a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(0)); 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "we should not have an empty lexical context"); 921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load the global context of the current context. 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; 925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, offset)); 926a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, GlobalObject::kGlobalContextOffset)); 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) { 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Read the first word and compare to the global_context_map. 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 938a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 939a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 940a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if both contexts are the same. 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, &same_contexts); 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) { 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(holder_reg, ip); // Move ip to its holding place. 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kNullValueRootIndex); 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "JSGlobalProxy::context() should not be null."); 957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 960a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 962a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip is not needed. ip is reloaded below. 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip to holder's context. 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the security token in the calling global object is 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // compatible with the security token in the receiving global 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // object. 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int token_offset = Context::kHeaderSize + 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Context::SECURITY_TOKEN_INDEX * kPointerSize; 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, token_offset)); 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(ip, token_offset)); 976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 977a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&same_contexts); 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 981a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 982a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 983a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(int object_size, 984a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 99225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen // Make object size into bytes. 99325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 99425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen object_size *= kPointerSize; 99525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 99625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen ASSERT_EQ(0, object_size & kObjectAlignmentMask); 99725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load address of new object into result and allocation top address into 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // scratch1. 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(new_space_allocation_top)); 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, MemOperand(scratch1)); 1005d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else if (FLAG_debug_code) { 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assert that result actually contains top on entry. scratch2 is used 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // immediately below so this use of scratch2 does not cause difference with 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // respect to register content between debug and release mode. 1009a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch1)); 1010a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, scratch2); 1011a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "Unexpected allocation top"); 1012a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1013a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1014a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to calculate the new top. 1016a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_limit = 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_limit_address(); 1018a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(new_space_allocation_limit)); 1019a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch2)); 102025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen add(result, result, Operand(object_size)); 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, Operand(scratch2)); 1022a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(result, MemOperand(scratch1)); 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Tag and adjust back to start of new object. 1026a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 102725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size - kHeapObjectTag)); 1028a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 102925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size)); 1030a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1033a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(Register object_size, 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 1040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 1042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load address of new object into result and allocation top address into 1044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // scratch1. 1045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(new_space_allocation_top)); 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 1049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, MemOperand(scratch1)); 1050d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else if (FLAG_debug_code) { 1051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assert that result actually contains top on entry. scratch2 is used 1052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // immediately below so this use of scratch2 does not cause difference with 1053a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // respect to register content between debug and release mode. 1054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch1)); 1055a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, scratch2); 1056a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "Unexpected allocation top"); 1057a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1058a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1059a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1060a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to calculate the new top. Object size is in words so a shift is required to 1061a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // get the number of bytes 1062a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_limit = 1063a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_limit_address(); 1064a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(new_space_allocation_limit)); 1065a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch2)); 106625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 106725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen add(result, result, Operand(object_size, LSL, kPointerSizeLog2)); 106825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } else { 106925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen add(result, result, Operand(object_size)); 107025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 1071a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, Operand(scratch2)); 1072a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1073a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1074d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Update allocation top. result temporarily holds the new top. 1075d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (FLAG_debug_code) { 1076d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block tst(result, Operand(kObjectAlignmentMask)); 1077d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Check(eq, "Unaligned allocation in new space"); 1078d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1079a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(result, MemOperand(scratch1)); 1080a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adjust back to start of new object. 108225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 108325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size, LSL, kPointerSizeLog2)); 108425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } else { 108525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size)); 108625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 1087a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1088a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Tag object if requested. 1089a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 1090a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(result, result, Operand(kHeapObjectTag)); 1091a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1092a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1093a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1094a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1095a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::UndoAllocationInNewSpace(Register object, 1096a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch) { 1097a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1098a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1099a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure the object has no tag before resetting top. 1101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block and_(object, object, Operand(~kHeapObjectTagMask)); 1102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the object un-allocated is below the current top. 1104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(scratch)); 1106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(object, scratch); 1107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(lt, "Undo allocation of non allocated memory"); 1108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Write the address of the object to un-allocate as the current top. 1110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(object, MemOperand(scratch)); 1112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11153100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteString(Register result, 11163100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11173100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 11183100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 11193100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 11203100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 11213100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 11223100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 11233100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); 11243100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(scratch1, Operand(length, LSL, 1)); // Length in bytes, not chars. 11253100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, scratch1, 11263100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqTwoByteString::kHeaderSize)); 112725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 11283100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11293100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate two-byte string in new space. 11303100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 11313100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 11323100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 11333100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 11343100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 11353100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 11363100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11373100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 11386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 11396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 11406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kStringMapRootIndex, 11416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 11426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 11433100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11443100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11453100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11463100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiString(Register result, 11473100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11483100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 11493100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 11503100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 11513100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 11523100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 11533100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 11543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqAsciiString::kHeaderSize & kObjectAlignmentMask) == 0); 11553100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(kCharSize == 1); 11563100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, length, 11573100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqAsciiString::kHeaderSize)); 115825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 11593100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate ASCII string in new space. 11613100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 11623100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 11633100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 11643100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 11653100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 11663100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 11673100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11683100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 11696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 11706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 11716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kAsciiStringMapRootIndex, 11726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 11736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 11743100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11753100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11763100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11773100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteConsString(Register result, 11783100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11793100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 11803100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 11813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 118225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 11833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 11843100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 11853100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 11863100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 11873100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 11886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 11896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 11906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 11916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsStringMapRootIndex, 11926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 11936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 11943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11953100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11963100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11973100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiConsString(Register result, 11983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 12003100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 12013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 120225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 12033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 12043100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 12053100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 12063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 12073100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 12086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 12096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 12106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 12116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsAsciiStringMapRootIndex, 12126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 12136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 12143100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12153100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12163100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12176ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CompareObjectType(Register object, 1218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register map, 1219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 12216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(map, FieldMemOperand(object, HeapObject::kMapOffset)); 1222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareInstanceType(map, type_reg, type); 1223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CompareInstanceType(Register map, 1227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 1229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); 1230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(type_reg, Operand(type)); 1231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12343100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::CheckMap(Register obj, 12353100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch, 12363100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Handle<Map> map, 12373100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* fail, 12383100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu bool is_heap_object) { 12393100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (!is_heap_object) { 12403100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu BranchOnSmi(obj, fail); 12413100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 12423100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 12433100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(ip, Operand(map)); 12443100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu cmp(scratch, ip); 12453100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, fail); 12463100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12473100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12483100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12497f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::CheckMap(Register obj, 12507f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 12517f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Heap::RootListIndex index, 12527f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Label* fail, 12537f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch bool is_heap_object) { 12547f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch if (!is_heap_object) { 12557f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch BranchOnSmi(obj, fail); 12567f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 12577f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 12587f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch LoadRoot(ip, index); 12597f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch cmp(scratch, ip); 12607f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch b(ne, fail); 12617f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 12627f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 12637f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 1264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::TryGetFunctionPrototype(Register function, 1265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 1267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 1268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the receiver isn't a smi. 1269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BranchOnSmi(function, miss); 1270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the function really is a function. Load map into result reg. 1272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(function, result, scratch, JS_FUNCTION_TYPE); 1273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 1274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure that the function has an instance prototype. 1276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label non_instance; 1277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); 1278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block tst(scratch, Operand(1 << Map::kHasNonInstancePrototype)); 1279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &non_instance); 1280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype or initial map from the function. 1282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, 1283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 1284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the prototype or initial map is the hole, don't return it and 1286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // simply miss the cache instead. This will allow us to allocate a 1287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // prototype object on-demand in the runtime system. 1288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kTheHoleValueRootIndex); 1289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, ip); 1290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, miss); 1291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the function does not have an initial map, we're done. 1293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 1294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(result, scratch, scratch, MAP_TYPE); 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &done); 1296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype from the initial map. 1298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kPrototypeOffset)); 1299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block jmp(&done); 1300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Non-instance prototype: Fetch prototype from constructor field 1302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in initial map. 1303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&non_instance); 1304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kConstructorOffset)); 1305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All done. 1307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 1308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallStub(CodeStub* stub, Condition cond) { 1312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(allow_stub_calls()); // stub calls are not allowed in some stubs 1313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 1314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 13173100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::TailCallStub(CodeStub* stub, Condition cond) { 13183100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(allow_stub_calls()); // stub calls are not allowed in some stubs 13193100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 13203100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 13213100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 13223100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1323ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarkevoid MacroAssembler::StubReturn(int argc, Condition cond) { 1324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(argc >= 1 && generating_stub()); 13253100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (argc > 1) { 1326ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke add(sp, sp, Operand((argc - 1) * kPointerSize), LeaveCC, cond); 13273100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 1328ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke Ret(cond); 1329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IllegalOperation(int num_arguments) { 1333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (num_arguments > 0) { 1334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(sp, sp, Operand(num_arguments * kPointerSize)); 1335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(r0, Heap::kUndefinedValueRootIndex); 1337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1340d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::IntegerToDoubleConversionWithVFP3(Register inReg, 1341d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outHighReg, 1342d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outLowReg) { 1343d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // ARMv7 VFP3 instructions to implement integer to double conversion. 1344d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block mov(r7, Operand(inReg, ASR, kSmiTagSize)); 1345e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(s15, r7); 13466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block vcvt_f64_s32(d7, s15); 1347e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(outLowReg, outHighReg, d7); 1348d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1349d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1350d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 13518defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::ObjectToDoubleVFPRegister(Register object, 13528defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister result, 13538defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 13548defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 13558defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 13568defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch3, 13578defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* not_number, 13588defd9ff6930b4e24729971a61cf7469daf119beSteve Block ObjectToDoubleFlags flags) { 13598defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 13608defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & OBJECT_NOT_SMI) == 0) { 13618defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label not_smi; 13628defd9ff6930b4e24729971a61cf7469daf119beSteve Block BranchOnNotSmi(object, ¬_smi); 13638defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Remove smi tag and convert to double. 13648defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(object, ASR, kSmiTagSize)); 13658defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch3, scratch1); 13668defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(result, scratch3); 13678defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(&done); 13688defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(¬_smi); 13698defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 13708defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Check for heap number and load double value from it. 13718defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); 13728defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch2, object, Operand(kHeapObjectTag)); 13738defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, heap_number_map); 13748defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(ne, not_number); 13758defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { 13768defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If exponent is all ones the number is either a NaN or +/-Infinity. 13778defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapNumber::kExponentOffset)); 13788defd9ff6930b4e24729971a61cf7469daf119beSteve Block Sbfx(scratch1, 13798defd9ff6930b4e24729971a61cf7469daf119beSteve Block scratch1, 13808defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentShift, 13818defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentBits); 13828defd9ff6930b4e24729971a61cf7469daf119beSteve Block // All-one value sign extend to -1. 13838defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, Operand(-1)); 13848defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(eq, not_number); 13858defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 13868defd9ff6930b4e24729971a61cf7469daf119beSteve Block vldr(result, scratch2, HeapNumber::kValueOffset); 13878defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 13888defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 13898defd9ff6930b4e24729971a61cf7469daf119beSteve Block 13908defd9ff6930b4e24729971a61cf7469daf119beSteve Block 13918defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::SmiToDoubleVFPRegister(Register smi, 13928defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 13938defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 13948defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch2) { 13958defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(smi, ASR, kSmiTagSize)); 13968defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch2, scratch1); 13978defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(value, scratch2); 13988defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 13998defd9ff6930b4e24729971a61cf7469daf119beSteve Block 14008defd9ff6930b4e24729971a61cf7469daf119beSteve Block 14013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::GetLeastBitsFromSmi(Register dst, 14023100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register src, 14033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu int num_least_bits) { 14043100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (CpuFeatures::IsSupported(ARMv7)) { 14057f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ubfx(dst, src, kSmiTagSize, num_least_bits); 14063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } else { 14073100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(dst, Operand(src, ASR, kSmiTagSize)); 14083100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu and_(dst, dst, Operand((1 << num_least_bits) - 1)); 14093100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 14103100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 14113100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 14123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::Function* f, int num_arguments) { 1414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All parameters are on the stack. r0 has the return value after call. 1415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the expected number of arguments of the runtime function is 1417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // constant, we check that the actual number of arguments match the 1418a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // expectation. 1419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (f->nargs >= 0 && f->nargs != num_arguments) { 1420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block IllegalOperation(num_arguments); 1421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 1422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 14244515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // TODO(1236192): Most runtime routines don't need the number of 14254515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // arguments passed in because it is constant. At some point we 14264515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // should remove this need and make the runtime routine entry code 14274515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // smarter. 14284515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r0, Operand(num_arguments)); 14294515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r1, Operand(ExternalReference(f))); 14304515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke CEntryStub stub(1); 1431a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallStub(&stub); 1432a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1433a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1434a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1435a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::FunctionId fid, int num_arguments) { 1436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::FunctionForId(fid), num_arguments); 1437a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1438a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1439a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1440402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::CallExternalReference(const ExternalReference& ext, 1441402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu int num_arguments) { 1442402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r0, Operand(num_arguments)); 1443402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ext)); 1444402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1445402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub stub(1); 1446402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CallStub(&stub); 1447402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 1448402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1449402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 14506ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallExternalReference(const ExternalReference& ext, 14516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 14526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 1453a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(1236192): Most runtime routines don't need the number of 1454a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments passed in because it is constant. At some point we 1455a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // should remove this need and make the runtime routine entry code 1456a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // smarter. 1457a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(num_arguments)); 14586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpToExternalReference(ext); 1459a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1460a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1461a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 14626ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, 14636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 14646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 14656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TailCallExternalReference(ExternalReference(fid), num_arguments, result_size); 14666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 14676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 14686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 14696ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpToExternalReference(const ExternalReference& builtin) { 1470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) 1471a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Thumb mode builtin. 1472a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((reinterpret_cast<intptr_t>(builtin.address()) & 1) == 1); 1473a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1474a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r1, Operand(builtin)); 1475a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CEntryStub stub(1); 1476a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(stub.GetCode(), RelocInfo::CODE_TARGET); 1477a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1478a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1479a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, 1481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeJSFlags flags) { 1482402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu GetBuiltinEntry(r2, id); 1483a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flags == CALL_JS) { 1484402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(r2); 1485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flags == JUMP_JS); 1487402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Jump(r2); 1488a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1490a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1491a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1492791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinFunction(Register target, 1493791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block Builtins::JavaScript id) { 14946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the builtins object into target register. 14956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 14966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); 1497402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Load the JavaScript builtin function from the builtins object. 1498791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(target, 14996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JSBuiltinsObject::OffsetOfFunctionWithId(id))); 1500791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block} 1501791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block 15026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1503791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { 1504791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ASSERT(!target.is(r1)); 1505791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block GetBuiltinFunction(r1, id); 15066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the code entry point from the builtins object. 1507791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 1508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1511a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SetCounter(StatsCounter* counter, int value, 1512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1513a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(value)); 1515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1516a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IncrementCounter(StatsCounter* counter, int value, 1522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 1524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 1527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(scratch1, scratch1, Operand(value)); 1528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::DecrementCounter(StatsCounter* counter, int value, 1534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 1536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 1539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sub(scratch1, scratch1, Operand(value)); 1540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1543a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Assert(Condition cc, const char* msg) { 1546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) 1547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(cc, msg); 1548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 15519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::AssertRegisterIsRoot(Register reg, 15529dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Heap::RootListIndex index) { 15539dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (FLAG_debug_code) { 15549dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen LoadRoot(ip, index); 15559dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen cmp(reg, ip); 15569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Check(eq, "Register did not match expected root"); 15579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 15589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 15599dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 15609dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 1561756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AssertFastElements(Register elements) { 1562756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick if (FLAG_debug_code) { 1563756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT(!elements.is(ip)); 1564756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Label ok; 1565756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick push(elements); 1566756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ldr(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); 1567756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedArrayMapRootIndex); 1568756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 1569756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 1570756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex); 1571756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 1572756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 1573756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Abort("JSObject with fast elements map has slow elements"); 1574756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick bind(&ok); 1575756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick pop(elements); 1576756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick } 1577756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 1578756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1579756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Check(Condition cc, const char* msg) { 1581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label L; 1582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(cc, &L); 1583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Abort(msg); 1584a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 1585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&L); 1586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1588a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1589a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Abort(const char* msg) { 15908defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label abort_start; 15918defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&abort_start); 1592a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We want to pass the msg string like a smi to avoid GC 1593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // problems, however msg is not guaranteed to be aligned 1594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // properly. Instead, we pass an aligned pointer that is 1595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a proper v8 smi, but also pass the alignment difference 1596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // from the real pointer as a smi. 1597a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p1 = reinterpret_cast<intptr_t>(msg); 1598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; 1599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); 1600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (msg != NULL) { 1602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment("Abort message: "); 1603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment(msg); 1604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1606d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Disable stub call restrictions to always allow calls to abort. 1607d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block set_allow_stub_calls(true); 1608d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(p0)); 1610a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 1611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(Smi::FromInt(p1 - p0))); 1612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 1613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::kAbort, 2); 1614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 16158defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (is_const_pool_blocked()) { 16168defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If the calling code cares about the exact number of 16178defd9ff6930b4e24729971a61cf7469daf119beSteve Block // instructions generated, we insert padding here to keep the size 16188defd9ff6930b4e24729971a61cf7469daf119beSteve Block // of the Abort macro constant. 16198defd9ff6930b4e24729971a61cf7469daf119beSteve Block static const int kExpectedAbortInstructions = 10; 16208defd9ff6930b4e24729971a61cf7469daf119beSteve Block int abort_instructions = InstructionsGeneratedSince(&abort_start); 16218defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(abort_instructions <= kExpectedAbortInstructions); 16228defd9ff6930b4e24729971a61cf7469daf119beSteve Block while (abort_instructions++ < kExpectedAbortInstructions) { 16238defd9ff6930b4e24729971a61cf7469daf119beSteve Block nop(); 16248defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 16258defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 1626a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1629d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::LoadContext(Register dst, int context_chain_length) { 1630d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (context_chain_length > 0) { 1631d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Move up the chain of contexts to the context containing the slot. 1632d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::CLOSURE_INDEX))); 1633d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Load the function context (which is the incoming, outer context). 1634d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 1635d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block for (int i = 1; i < context_chain_length; i++) { 1636d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); 1637d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 1638d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1639d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The context may be an intermediate context, not a function context. 1640d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); 1641d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else { // Slot is in the current function context. 1642d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The context may be an intermediate context, not a function context. 1643d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::FCONTEXT_INDEX))); 1644d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1645d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1646d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1647d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 16483100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfNotBothSmi(Register reg1, 16493100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 16503100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_not_both_smi) { 16513100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT_EQ(0, kSmiTag); 16523100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 16533100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), eq); 16543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, on_not_both_smi); 16553100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 16563100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16573100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16583100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfEitherSmi(Register reg1, 16593100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 16603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_either_smi) { 16613100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT_EQ(0, kSmiTag); 16623100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 16633100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), ne); 16643100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(eq, on_either_smi); 16653100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 16663100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 16673100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1668756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AbortIfSmi(Register object) { 1669756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT_EQ(0, kSmiTag); 1670756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick tst(object, Operand(kSmiTagMask)); 1671756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Assert(ne, "Operand is a smi"); 1672756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 1673756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1674756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1675d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNonSmisNotBothSequentialAsciiStrings( 1676d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register first, 1677d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 1678d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 1679d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 1680d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 1681d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Test that both first and second are sequential ASCII strings. 1682d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Assume that they are non-smis. 1683d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); 1684d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); 1685d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); 1686d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); 16876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 16886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpIfBothInstanceTypesAreNotSequentialAscii(scratch1, 16896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 16906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 16916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 16926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block failure); 1693d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 1694d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 1695d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first, 1696d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 1697d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 1698d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 1699d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 1700d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Check that neither is a smi. 1701d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ASSERT_EQ(0, kSmiTag); 1702d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke and_(scratch1, first, Operand(second)); 1703d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke tst(scratch1, Operand(kSmiTagMask)); 1704d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke b(eq, failure); 1705d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke JumpIfNonSmisNotBothSequentialAsciiStrings(first, 1706d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke second, 1707d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch1, 1708d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch2, 1709d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke failure); 1710d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 1711d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 1712d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 17136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Allocates a heap number or jumps to the need_gc label if the young space 17146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// is full and a scavenge is needed. 17156ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::AllocateHeapNumber(Register result, 17166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 17176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 17189dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register heap_number_map, 17196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* gc_required) { 17206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Allocate an object in the heap for the heap number and tag it as a heap 17216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // object. 172225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(HeapNumber::kSize, 17236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block result, 17246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 17256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 17266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block gc_required, 17276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TAG_OBJECT); 17286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17299dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Store heap number map in the allocated object. 17309dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); 17319dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen str(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); 17326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 17336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17358defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::AllocateHeapNumberWithValue(Register result, 17368defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 17378defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 17388defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 17398defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 17408defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* gc_required) { 17418defd9ff6930b4e24729971a61cf7469daf119beSteve Block AllocateHeapNumber(result, scratch1, scratch2, heap_number_map, gc_required); 17428defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch1, result, Operand(kHeapObjectTag)); 17438defd9ff6930b4e24729971a61cf7469daf119beSteve Block vstr(value, scratch1, HeapNumber::kValueOffset); 17448defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 17458defd9ff6930b4e24729971a61cf7469daf119beSteve Block 17468defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1747bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch// Copies a fixed number of fields of heap objects from src to dst. 1748bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdochvoid MacroAssembler::CopyFields(Register dst, 1749bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register src, 1750bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch RegList temps, 1751bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch int field_count) { 1752bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // At least one bit set in the first 15 registers. 1753bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & ((1 << 15) - 1)) != 0); 1754bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & dst.bit()) == 0); 1755bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & src.bit()) == 0); 1756bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Primitive implementation using only one temporary register. 1757bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1758bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register tmp = no_reg; 1759bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Find a temp register in temps list. 1760bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < 15; i++) { 1761bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch if ((temps & (1 << i)) != 0) { 1762bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch tmp.set_code(i); 1763bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch break; 1764bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1765bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1766bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT(!tmp.is(no_reg)); 1767bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1768bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < field_count; i++) { 1769bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ldr(tmp, FieldMemOperand(src, i * kPointerSize)); 1770bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch str(tmp, FieldMemOperand(dst, i * kPointerSize)); 1771bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1772bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch} 1773bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1774bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 17758defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::CountLeadingZeros(Register zeros, // Answer. 17768defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register source, // Input. 17778defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 17788defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(source) || !source.is(zeros)); 17798defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(scratch)); 17808defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!scratch.is(ip)); 17818defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!source.is(ip)); 17828defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(ip)); 17836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#ifdef CAN_USE_ARMV5_INSTRUCTIONS 17846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block clz(zeros, source); // This instruction is only supported after ARM5. 17856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 17866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(zeros, Operand(0)); 17878defd9ff6930b4e24729971a61cf7469daf119beSteve Block Move(scratch, source); 17886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 16. 17896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xffff0000)); 17906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(16), LeaveCC, eq); 17916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 16), LeaveCC, eq); 17926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 8. 17936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xff000000)); 17946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(8), LeaveCC, eq); 17956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 8), LeaveCC, eq); 17966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 4. 17976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xf0000000)); 17986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(4), LeaveCC, eq); 17996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 4), LeaveCC, eq); 18006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 2. 18016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xc0000000)); 18026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(2), LeaveCC, eq); 18036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 2), LeaveCC, eq); 18046ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top bit. 18056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0x80000000u)); 18066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(1), LeaveCC, eq); 18076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 18086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18116ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialAscii( 18126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register first, 18136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register second, 18146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 18156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 18166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 18176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 18186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 18196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 18206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch1, first, Operand(kFlatAsciiStringMask)); 18216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch2, second, Operand(kFlatAsciiStringMask)); 18226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch1, Operand(kFlatAsciiStringTag)); 18236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Ignore second test if first test failed. 18246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch2, Operand(kFlatAsciiStringTag), eq); 18256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 18266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18296ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(Register type, 18306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 18316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 18326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 18336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 18346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 18356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, type, Operand(kFlatAsciiStringMask)); 18366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(kFlatAsciiStringTag)); 18376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 18386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18416ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) { 18426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = ActivationFrameAlignment(); 18436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Up to four simple arguments are passed in registers r0..r3. 18446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4; 18456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 18466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make stack end at alignment and make room for num_arguments - 4 words 18476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // and the original value of sp. 18486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, sp); 18496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); 18506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 18516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(sp, sp, Operand(-frame_alignment)); 18526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); 18536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 18546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand(stack_passed_arguments * kPointerSize)); 18556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 18566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18576ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18596ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(ExternalReference function, 18606ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments) { 18616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(ip, Operand(function)); 18626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block CallCFunction(ip, num_arguments); 18636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18666ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(Register function, int num_arguments) { 18676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make sure that the stack is aligned before calling a C function unless 18686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // running in the simulator. The simulator has its own alignment check which 18696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // provides more information. 18706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if defined(V8_HOST_ARCH_ARM) 18716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_debug_code) { 18726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = OS::ActivationFrameAlignment(); 18736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 18746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 18756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 18766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label alignment_as_expected; 18776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand(frame_alignment_mask)); 18786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(eq, &alignment_as_expected); 18796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Don't use Check here, as it will call Runtime_Abort possibly 18806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // re-entering here. 18816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block stop("Unexpected alignment"); 18826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(&alignment_as_expected); 18836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 18846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 18856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 18866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Just call directly. The function called cannot cause a GC, or 18886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // allow preemption, so the return address in the link register 18896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // stays correct. 18906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Call(function); 18916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4; 18926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (OS::ActivationFrameAlignment() > kPointerSize) { 18936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); 18946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 18956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(sp, sp, Operand(stack_passed_arguments * sizeof(kPointerSize))); 18966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 18976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 1901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::CodePatcher(byte* address, int instructions) 1902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : address_(address), 1903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block instructions_(instructions), 1904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block size_(instructions * Assembler::kInstrSize), 1905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm_(address, size_ + Assembler::kGap) { 1906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create a new macro assembler pointing to the address of the code to patch. 1907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The size is adjusted with kGap on order for the assembler to generate size 1908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bytes of instructions without failing with buffer size constraints. 1909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 1910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::~CodePatcher() { 1914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Indicate that code has changed. 1915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CPU::FlushICache(address_, size_); 1916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the code was patched as expected. 1918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.pc_ == address_ + size_); 1919a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 1920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Instr x) { 1924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(x); 1925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1926a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Address addr) { 1929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(reinterpret_cast<Instr>(addr)); 1930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // ENABLE_DEBUGGER_SUPPORT 1932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 1935f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 1936f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#endif // V8_TARGET_ARCH_ARM 1937