macro-assembler-arm.cc revision b0fe1620dcb4135ac3ab2d66ff93072373911299
1b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// Copyright 2010 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 289ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick#include <limits.h> // For LONG_MIN, LONG_MAX. 299ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "v8.h" 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 32f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#if defined(V8_TARGET_ARCH_ARM) 33f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "bootstrapper.h" 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "codegen-inl.h" 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "debug.h" 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "runtime.h" 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockMacroAssembler::MacroAssembler(void* buffer, int size) 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : Assembler(buffer, size), 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block generating_stub_(false), 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block allow_stub_calls_(true), 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block code_object_(Heap::undefined_value()) { 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We always generate arm code, never thumb code, even if V8 is compiled to 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// thumb, so we require inter-working support 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) && !defined(USE_THUMB_INTERWORK) 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#error "flag -mthumb-interwork missing" 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We do not support thumb inter-working with an arm architecture not supporting 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the blx instruction (below v5t). If you know what CPU you are compiling for 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// you can use -march=armv7 or similar. 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(USE_THUMB_INTERWORK) && !defined(CAN_USE_THUMB_INSTRUCTIONS) 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block# error "For thumb inter-working we require an architecture which supports blx" 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Using bx does not yield better code, so use it only when required 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(USE_THUMB_INTERWORK) 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define USE_BX 1 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(Register target, Condition cond) { 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(target, cond); 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target), LeaveCC, cond); 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(intptr_t target, RelocInfo::Mode rmode, 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(target, rmode), LeaveCC, cond); 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(ip, cond); 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target, rmode), LeaveCC, cond); 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(byte* target, RelocInfo::Mode rmode, 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!RelocInfo::IsCodeTarget(rmode)); 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(reinterpret_cast<intptr_t>(target), rmode, cond); 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Jump(Handle<Code> code, RelocInfo::Mode rmode, 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsCodeTarget(rmode)); 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 'code' is always generated ARM code, never THUMB code 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(Register target, Condition cond) { 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BLX 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block blx(target, cond); 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // set lr for return at current pc + 8 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(lr, Operand(pc), LeaveCC, cond); 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target), LeaveCC, cond); 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(intptr_t target, RelocInfo::Mode rmode, 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 1196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if USE_BLX 1206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // On ARMv5 and after the recommended call sequence is: 1216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // ldr ip, [pc, #...] 1226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // blx ip 1236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The two instructions (ldr and blx) could be separated by a constant 1256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // pool and the code would still work. The issue comes from the 1266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // patching code which expect the ldr to be just above the blx. 1276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block { BlockConstPoolScope block_const_pool(this); 1286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Statement positions are expected to be recorded when the target 1296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // address is loaded. The mov method will automatically record 1306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // positions when pc is the target, since this is not the case here 1316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // we have to do it explicitly. 1323e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu positions_recorder()->WriteRecordedPositions(); 1336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(ip, Operand(target, rmode), LeaveCC, cond); 1356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block blx(ip, cond); 1366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 1376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(kCallTargetAddressOffset == 2 * kInstrSize); 1396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set lr for return at current pc + 8. 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(lr, Operand(pc), LeaveCC, cond); 142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ldr<cond> pc, [pc + offset of target in constant pool]. 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(target, rmode), LeaveCC, cond); 1446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(kCallTargetAddressOffset == kInstrSize); 1466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(byte* target, RelocInfo::Mode rmode, 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!RelocInfo::IsCodeTarget(rmode)); 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(reinterpret_cast<intptr_t>(target), rmode, cond); 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Call(Handle<Code> code, RelocInfo::Mode rmode, 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsCodeTarget(rmode)); 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 'code' is always generated ARM code, never THUMB code 161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(reinterpret_cast<intptr_t>(code.location()), rmode, cond); 162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Ret(Condition cond) { 166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if USE_BX 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bx(lr, cond); 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(pc, Operand(lr), LeaveCC, cond); 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 174e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Drop(int count, Condition cond) { 175e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke if (count > 0) { 176e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(count * kPointerSize), LeaveCC, cond); 177e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke } 178e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 179e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 180e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 181b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::Ret(int drop, Condition cond) { 182b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Drop(drop, cond); 183b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Ret(cond); 184b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 185b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 186b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1877f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::Swap(Register reg1, 1887f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register reg2, 1897f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 1907f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Condition cond) { 1916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (scratch.is(no_reg)) { 1927f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 1937f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg2, reg2, Operand(reg1), LeaveCC, cond); 1947f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 1956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 1967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(scratch, reg1, LeaveCC, cond); 1977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg1, reg2, LeaveCC, cond); 1987f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg2, scratch, LeaveCC, cond); 1996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 2006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 203e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Call(Label* target) { 204e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke bl(target); 205e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 206e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 207e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 208e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Move(Register dst, Handle<Object> value) { 209e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(dst, Operand(value)); 210e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 211d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 212d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 2136ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::Move(Register dst, Register src) { 2146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (!dst.is(src)) { 2156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(dst, src); 2166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 2176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2209dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::And(Register dst, Register src1, const Operand& src2, 2219dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2223e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu if (!src2.is_reg() && 2233e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu !src2.must_use_constant_pool() && 2243e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu src2.immediate() == 0) { 2259ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dst, Operand(0, RelocInfo::NONE), LeaveCC, cond); 2263e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 2273e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu } else if (!src2.is_single_instruction() && 2283e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu !src2.must_use_constant_pool() && 2293e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu CpuFeatures::IsSupported(ARMv7) && 2303e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu IsPowerOf2(src2.immediate() + 1)) { 2313e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu ubfx(dst, src1, 0, WhichPowerOf2(src2.immediate() + 1), cond); 2323e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 2333e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu } else { 2343e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu and_(dst, src1, src2, LeaveCC, cond); 2359dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2369dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2379dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2389dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2399dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Ubfx(Register dst, Register src1, int lsb, int width, 2409dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2419dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2429dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2439dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2449dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 2459dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (lsb != 0) { 2469dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSR, lsb), LeaveCC, cond); 2479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ubfx(dst, src1, lsb, width, cond); 2509dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2529dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2539dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2549dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Sbfx(Register dst, Register src1, int lsb, int width, 2559dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2599dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 2609dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_up = 32 - lsb - width; 2619dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_down = lsb + shift_up; 2629dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_up != 0) { 2639dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSL, shift_up), LeaveCC, cond); 2649dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2659dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_down != 0) { 2669dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, ASR, shift_down), LeaveCC, cond); 2679dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2689dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2699dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen sbfx(dst, src1, lsb, width, cond); 2709dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2719dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2729dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2739dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2749dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Bfc(Register dst, int lsb, int width, Condition cond) { 2759dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2769dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2779dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2789dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bic(dst, dst, Operand(mask)); 2799dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2809dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bfc(dst, lsb, width, cond); 2819dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2829dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2839dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2849dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 28550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsenvoid MacroAssembler::Usat(Register dst, int satpos, const Operand& src, 28650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Condition cond) { 28750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 28850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(!dst.is(pc) && !src.rm().is(pc)); 28950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((satpos >= 0) && (satpos <= 31)); 29050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // These asserts are required to ensure compatibility with the ARMv7 29250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // implementation. 29350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((src.shift_op() == ASR) || (src.shift_op() == LSL)); 29450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(src.rs().is(no_reg)); 29550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Label done; 29750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen int satval = (1 << satpos) - 1; 29850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (cond != al) { 30050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(NegateCondition(cond), &done); // Skip saturate if !condition. 30150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 30250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!(src.is_reg() && dst.is(src.rm()))) { 30350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, src); 30450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 30550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen tst(dst, Operand(~satval)); 30650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(eq, &done); 3079ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dst, Operand(0, RelocInfo::NONE), LeaveCC, mi); // 0 if negative. 30850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, Operand(satval), LeaveCC, pl); // satval if positive. 30950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen bind(&done); 31050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } else { 31150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen usat(dst, satpos, src, cond); 31250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 31350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen} 31450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 31550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Empty the const pool. 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CheckConstPool(true, true); 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(pc, pc, Operand(index, 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LSL, 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assembler::arm::Instr::kInstrSizeLog2 - kSmiTagSize)); 322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); 323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block nop(); // Jump table alignment. 324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < targets.length(); i++) { 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(targets[i]); 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LoadRoot(Register destination, 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Heap::RootListIndex index, 332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 3333100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(destination, MemOperand(roots, index << kPointerSizeLog2), cond); 334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 33725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsenvoid MacroAssembler::StoreRoot(Register source, 33825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Heap::RootListIndex index, 33925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Condition cond) { 34025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen str(source, MemOperand(roots, index << kPointerSizeLog2), cond); 34125f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen} 34225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 34325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 3446ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::RecordWriteHelper(Register object, 3458defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 3468defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 3476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_debug_code) { 3486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Check that the object is not in new space. 3496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label not_in_new_space; 3508defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, ne, ¬_in_new_space); 3516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Abort("new-space object passed to RecordWriteHelper"); 3526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(¬_in_new_space); 3536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 3544515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 3557f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Calculate page address. 3569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Bfc(object, 0, kPageSizeBits); 3579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Calculate region number. 3598defd9ff6930b4e24729971a61cf7469daf119beSteve Block Ubfx(address, address, Page::kRegionSizeLog2, 3609dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen kPageSizeBits - Page::kRegionSizeLog2); 361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3627f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Mark region dirty. 3638defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(1)); 3658defd9ff6930b4e24729971a61cf7469daf119beSteve Block orr(scratch, scratch, Operand(ip, LSL, address)); 3668defd9ff6930b4e24729971a61cf7469daf119beSteve Block str(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 3676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3706ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InNewSpace(Register object, 3716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 3726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Condition cc, 3736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* branch) { 3746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(cc == eq || cc == ne); 3756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, object, Operand(ExternalReference::new_space_mask())); 3766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(ExternalReference::new_space_start())); 3776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(cc, branch); 3786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Will clobber 4 registers: object, offset, scratch, ip. The 3826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// register 'object' contains a heap object pointer. The heap object 3836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// tag is shifted away. 3849dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::RecordWrite(Register object, 3859dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Operand offset, 3869dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch0, 3879dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch1) { 3886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The compiled code assumes that record write doesn't change the 3896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // context register, so we check that none of the clobbered 3906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // registers are cp. 3919dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(!object.is(cp) && !scratch0.is(cp) && !scratch1.is(cp)); 3926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label done; 3946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // First, test that the object is not in the new space. We cannot set 3967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // region marks for new space pages. 3979dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen InNewSpace(object, scratch0, eq, &done); 3986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3998defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Add offset into the object. 4008defd9ff6930b4e24729971a61cf7469daf119beSteve Block add(scratch0, object, offset); 4018defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Record the actual write. 4038defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, scratch0, scratch1); 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 4064515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 4074515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // Clobber all input registers when running with the debug-code flag 4084515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // turned on to provoke errors. 4094515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke if (FLAG_debug_code) { 4106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 4119dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch0, Operand(BitCast<int32_t>(kZapValue))); 4129dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch1, Operand(BitCast<int32_t>(kZapValue))); 4134515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke } 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4178defd9ff6930b4e24729971a61cf7469daf119beSteve Block// Will clobber 4 registers: object, address, scratch, ip. The 4188defd9ff6930b4e24729971a61cf7469daf119beSteve Block// register 'object' contains a heap object pointer. The heap object 4198defd9ff6930b4e24729971a61cf7469daf119beSteve Block// tag is shifted away. 4208defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::RecordWrite(Register object, 4218defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 4228defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 4238defd9ff6930b4e24729971a61cf7469daf119beSteve Block // The compiled code assumes that record write doesn't change the 4248defd9ff6930b4e24729971a61cf7469daf119beSteve Block // context register, so we check that none of the clobbered 4258defd9ff6930b4e24729971a61cf7469daf119beSteve Block // registers are cp. 4268defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!object.is(cp) && !address.is(cp) && !scratch.is(cp)); 4278defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4288defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 4298defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4308defd9ff6930b4e24729971a61cf7469daf119beSteve Block // First, test that the object is not in the new space. We cannot set 4318defd9ff6930b4e24729971a61cf7469daf119beSteve Block // region marks for new space pages. 4328defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, eq, &done); 4338defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4348defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Record the actual write. 4358defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, address, scratch); 4368defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4378defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 4388defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4398defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Clobber all input registers when running with the debug-code flag 4408defd9ff6930b4e24729971a61cf7469daf119beSteve Block // turned on to provoke errors. 4418defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (FLAG_debug_code) { 4428defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 4438defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(address, Operand(BitCast<int32_t>(kZapValue))); 4448defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch, Operand(BitCast<int32_t>(kZapValue))); 4458defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 4468defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 4478defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4488defd9ff6930b4e24729971a61cf7469daf119beSteve Block 449b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// Push and pop all registers that can hold pointers. 450b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::PushSafepointRegisters() { 451b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Safepoints expect a block of contiguous register values starting with r0: 452b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(((1 << kNumSafepointSavedRegisters) - 1) == kSafepointSavedRegisters); 453b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Safepoints expect a block of kNumSafepointRegisters values on the 454b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // stack, so adjust the stack for unsaved registers. 455b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; 456b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(num_unsaved >= 0); 457b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch sub(sp, sp, Operand(num_unsaved * kPointerSize)); 458b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch stm(db_w, sp, kSafepointSavedRegisters); 459b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 460b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 461b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 462b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::PopSafepointRegisters() { 463b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; 464b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldm(ia_w, sp, kSafepointSavedRegisters); 465b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(sp, sp, Operand(num_unsaved * kPointerSize)); 466b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 467b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 468b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 469b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochint MacroAssembler::SafepointRegisterStackIndex(int reg_code) { 470b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The registers are pushed starting with the highest encoding, 471b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // which means that lowest encodings are closest to the stack pointer. 472b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(reg_code >= 0 && reg_code < kNumSafepointRegisters); 473b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return reg_code; 474b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 475b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 476b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 477f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Ldrd(Register dst1, Register dst2, 478f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& src, Condition cond) { 479f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(src.rm().is(no_reg)); 480f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!dst1.is(lr)); // r14. 481f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, dst1.code() % 2); 482f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(dst1.code() + 1, dst2.code()); 483f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 484f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two ldr instructions if ldrd is not available. 485f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (CpuFeatures::IsSupported(ARMv7)) { 486f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 487f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldrd(dst1, dst2, src, cond); 488f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 489f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand src2(src); 490f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke src2.set_offset(src2.offset() + 4); 491f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (dst1.is(src.rn())) { 492f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 493f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 494f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 495f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 496f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 497f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 498f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 499f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 500f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 501f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 502f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Strd(Register src1, Register src2, 503f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& dst, Condition cond) { 504f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(dst.rm().is(no_reg)); 505f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!src1.is(lr)); // r14. 506f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, src1.code() % 2); 507f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(src1.code() + 1, src2.code()); 508f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 509f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two str instructions if strd is not available. 510f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (CpuFeatures::IsSupported(ARMv7)) { 511f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 512f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke strd(src1, src2, dst, cond); 513f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 514f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand dst2(dst); 515f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke dst2.set_offset(dst2.offset() + 4); 516f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src1, dst, cond); 517f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src2, dst2, cond); 518f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 519f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 520f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 521f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::EnterFrame(StackFrame::Type type) { 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0-r3: preserved 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, cp.bit() | fp.bit() | lr.bit()); 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(Smi::FromInt(type))); 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(CodeObject())); 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(fp, sp, Operand(3 * kPointerSize)); // Adjust FP to point to saved FP. 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LeaveFrame(StackFrame::Type type) { 534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: preserved 535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: preserved 536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: preserved 537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Drop the execution stack down to the frame pointer and restore 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the caller frame pointer and return address. 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, fp); 541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia_w, sp, fp.bit() | lr.bit()); 542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 543a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 545b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::EnterExitFrame(bool save_doubles) { 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0 is argc. 547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute callee's stack pointer before making changes and save it as 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ip register so that it is restored as sp register on exit, thereby 549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // popping the args. 550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ip = sp + kPointerSize * #args; 552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(ip, sp, Operand(r0, LSL, kPointerSizeLog2)); 553a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 554b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Compute the argv pointer and keep it in a callee-saved register. 555b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch sub(r6, ip, Operand(kPointerSize)); 556b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 5576ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Prepare the stack to be aligned when calling into C. After this point there 5586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // are 5 pushes before the call into C, so the stack needs to be aligned after 5596ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // 5 pushes. 5606ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = ActivationFrameAlignment(); 5616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 5626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment != kPointerSize) { 5636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The following code needs to be more general if this assert does not hold. 5646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(frame_alignment == 2 * kPointerSize); 5656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // With 5 pushes left the frame must be unaligned at this point. 5666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(r7, Operand(Smi::FromInt(0))); 5676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand((frame_alignment - kPointerSize) & frame_alignment_mask)); 5686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block push(r7, eq); // Push if aligned to make it unaligned. 5696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Push in reverse order: caller_fp, sp_on_exit, and caller_pc. 572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, fp.bit() | ip.bit() | lr.bit()); 573402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(fp, Operand(sp)); // Setup new frame pointer. 574a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 575402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(ip, Operand(CodeObject())); 576402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu push(ip); // Accessed from ExitFrame::code_slot. 577a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 578a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the frame pointer and the context in top. 579a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_c_entry_fp_address))); 580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(fp, MemOperand(ip)); 581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_context_address))); 582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(cp, MemOperand(ip)); 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 584a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Setup argc and the builtin function in callee-saved registers. 585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r4, Operand(r0)); 586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r5, Operand(r1)); 587b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 588b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Optionally save all double registers. 589b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (save_doubles) { 590b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // TODO(regis): Use vstrm instruction. 591b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The stack alignment code above made sp unaligned, so add space for one 592b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // more double register and use aligned addresses. 593b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(kDoubleSize == frame_alignment); 594b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Mark the frame as containing doubles by pushing a non-valid return 595b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // address, i.e. 0. 596b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(ExitFrameConstants::kMarkerOffset == -2 * kPointerSize); 597b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(ip, Operand(0)); // Marker and alignment word. 598b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch push(ip); 599b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int space = DwVfpRegister::kNumRegisters * kDoubleSize + kPointerSize; 600b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch sub(sp, sp, Operand(space)); 601b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < DwVfpRegister::kNumRegisters; i++) { 602b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DwVfpRegister reg = DwVfpRegister::from_code(i); 603b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch vstr(reg, sp, i * kDoubleSize + kPointerSize); 604b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 605b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Note that d0 will be accessible at fp - 2*kPointerSize - 606b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // DwVfpRegister::kNumRegisters * kDoubleSize, since the code slot and the 607b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // alignment word were pushed after the fp. 608b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 610a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 6126ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InitializeNewString(Register string, 6136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register length, 6146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::RootListIndex map_index, 6156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 6166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2) { 6176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(length, LSL, kSmiTagSize)); 6186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block LoadRoot(scratch2, map_index); 6196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kLengthOffset)); 6206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(String::kEmptyHashField)); 6216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); 6226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); 6236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 6246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 6256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 6266ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockint MacroAssembler::ActivationFrameAlignment() { 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(V8_HOST_ARCH_ARM) 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Running on the real platform. Use the alignment as mandated by the local 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // environment. 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: This will break if we ever start generating snapshots on one ARM 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // platform for another ARM platform with a different alignment. 6326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return OS::ActivationFrameAlignment(); 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else // defined(V8_HOST_ARCH_ARM) 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we are using the simulator then we should always align to the expected 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // alignment. As the simulator is used to generate snapshots we do not know 6366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // if the target platform will need alignment, so this is controlled from a 6376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // flag. 6386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return FLAG_sim_stack_alignment; 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // defined(V8_HOST_ARCH_ARM) 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 643b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::LeaveExitFrame(bool save_doubles) { 644b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Optionally restore all double registers. 645b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (save_doubles) { 646b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // TODO(regis): Use vldrm instruction. 647b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < DwVfpRegister::kNumRegisters; i++) { 648b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DwVfpRegister reg = DwVfpRegister::from_code(i); 649b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Register d15 is just below the marker. 650b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int offset = ExitFrameConstants::kMarkerOffset; 651b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch vldr(reg, fp, (i - DwVfpRegister::kNumRegisters) * kDoubleSize + offset); 652b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 653b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 654b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Clear top frame. 6569ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(r3, Operand(0, RelocInfo::NONE)); 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_c_entry_fp_address))); 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore current context from top and clear it in debug mode. 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_context_address))); 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, MemOperand(ip)); 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Pop the arguments, restore registers, and return. 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, Operand(fp)); // respect ABI stack constraint 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia, sp, fp.bit() | sp.bit() | pc.bit()); 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokePrologue(const ParameterCount& expected, 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> code_constant, 676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg, 677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* done, 678a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool definitely_matches = false; 680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label regular_invoke; 681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether the expected and actual arguments count match. If not, 683a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setup registers according to contract with ArgumentsAdaptorTrampoline: 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: actual arguments count 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: function (passed through to callee) 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: expected arguments count 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r3: callee code entry 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The code below is made a lot easier because the calling code already sets 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // up actual and expected registers according to the contract if values are 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // passed in registers. 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate() || actual.reg().is(r0)); 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(expected.is_immediate() || expected.reg().is(r2)); 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((!code_constant.is_null() && code_reg.is(no_reg)) || code_reg.is(r3)); 695a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.is_immediate()) { 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate()); 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == actual.immediate()) { 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == sentinel) { 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Don't worry about adapting arguments for builtins that 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // don't want that done. Skip adaption code by making it look 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // like we have a match between expected and actual number of 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments. 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r2, Operand(expected.immediate())); 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (actual.is_immediate()) { 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.immediate())); 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 719a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.reg())); 720a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 721a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 722a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!definitely_matches) { 725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!code_constant.is_null()) { 726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(code_constant)); 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> adaptor = 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)); 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(adaptor, RelocInfo::CODE_TARGET); 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(done); 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(adaptor, RelocInfo::CODE_TARGET); 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(®ular_invoke); 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Register code, 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag); 750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code); 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flag == JUMP_FUNCTION); 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code); 755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 758a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 762a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 763a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Handle<Code> code, 764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode, 767a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 768a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 769a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 770a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokePrologue(expected, actual, code, no_reg, &done, flag); 771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code, rmode); 773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code, rmode); 775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeFunction(Register fun, 784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Contract with called JS functions requires that function is passed in r1. 787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(fun.is(r1)); 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register expected_reg = r2; 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg = r3; 791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); 793a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 794a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(expected_reg, 795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(code_reg, 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SharedFunctionInfo::kFormalParameterCountOffset)); 7977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(expected_reg, Operand(expected_reg, ASR, kSmiTagSize)); 798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, 799791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 801a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ParameterCount expected(expected_reg); 802a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeCode(code_reg, expected, actual, flag); 803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 806402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::InvokeFunction(JSFunction* function, 807402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu const ParameterCount& actual, 808402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu InvokeFlag flag) { 809402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(function->is_compiled()); 810402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 811402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Get the function and setup the context. 812402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(Handle<JSFunction>(function))); 813402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 814402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 815402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Invoke the cached code. 816402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Handle<Code> code(function->code()); 817402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ParameterCount expected(function->shared()->formal_parameter_count()); 818b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (V8::UseCrankshaft()) { 819b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // TODO(kasperl): For now, we always call indirectly through the 820b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // code field in the function to allow recompilation to take effect 821b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // without changing any of the call sites. 822b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(r3, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 823b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch InvokeCode(r3, expected, actual, flag); 824b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 825b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag); 826b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 827b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 828b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 829b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 830b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::IsObjectJSObjectType(Register heap_object, 831b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register map, 832b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register scratch, 833b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label* fail) { 834b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(map, FieldMemOperand(heap_object, HeapObject::kMapOffset)); 835b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch IsInstanceJSObjectType(map, scratch, fail); 836b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 837b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 838b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 839b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::IsInstanceJSObjectType(Register map, 840b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register scratch, 841b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label* fail) { 842b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldrb(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); 843b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch, Operand(FIRST_JS_OBJECT_TYPE)); 844b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch b(lt, fail); 845b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch, Operand(LAST_JS_OBJECT_TYPE)); 846b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch b(gt, fail); 847b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 848b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 849b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 850b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::IsObjectJSStringType(Register object, 851b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register scratch, 852b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label* fail) { 853b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(kNotStringTag != 0); 854b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 855b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); 856b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); 857b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch tst(scratch, Operand(kIsNotStringMask)); 858b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch b(nz, fail); 859402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 860402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 861402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 86280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef ENABLE_DEBUGGER_SUPPORT 863402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::DebugBreak() { 864402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(allow_stub_calls()); 8659ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(r0, Operand(0, RelocInfo::NONE)); 866402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ExternalReference(Runtime::kDebugBreak))); 867402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub ces(1); 868402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); 869402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 872a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::PushTryHandler(CodeLocation try_location, 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block HandlerType type) { 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adjust this code if not the case. 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The pc (return address) is passed in register lr. 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (try_location == IN_JAVASCRIPT) { 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (type == TRY_CATCH_HANDLER) { 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_CATCH)); 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_FINALLY)); 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r3.bit() | fp.bit() | lr.bit()); 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(ExternalReference(Top::k_handler_address))); 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r1, MemOperand(r3)); 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r1); 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r3)); 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Must preserve r0-r4, r5-r7 are available. 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(try_location == IN_JS_ENTRY); 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The frame pointer does not point to a JS frame so we save NULL 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for fp. We expect the code throwing an exception to check fp 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // before dereferencing it to restore the context. 9019ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(ip, Operand(0, RelocInfo::NONE)); // To save a NULL frame pointer. 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r6, Operand(StackHandler::ENTRY)); 903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r6.bit() | ip.bit() | lr.bit()); 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r7, Operand(ExternalReference(Top::k_handler_address))); 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r6, MemOperand(r7)); 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r6); 912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r7)); 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 918e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::PopTryHandler() { 919e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke ASSERT_EQ(0, StackHandlerConstants::kNextOffset); 920e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke pop(r1); 921e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(ip, Operand(ExternalReference(Top::k_handler_address))); 922e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); 923e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke str(r1, MemOperand(ip)); 924e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 925e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 926e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label same_contexts; 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(scratch)); 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(ip)); 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch.is(ip)); 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load current lexical context from the stack frame. 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); 938a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // In debug mode, make sure the lexical context is set. 939a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 9409ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch, Operand(0, RelocInfo::NONE)); 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "we should not have an empty lexical context"); 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load the global context of the current context. 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, offset)); 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, GlobalObject::kGlobalContextOffset)); 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) { 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Read the first word and compare to the global_context_map. 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); 957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 960a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 962a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if both contexts are the same. 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, &same_contexts); 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) { 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(holder_reg, ip); // Move ip to its holding place. 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kNullValueRootIndex); 976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 977a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "JSGlobalProxy::context() should not be null."); 978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 981a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 982a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 983a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip is not needed. ip is reloaded below. 984a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip to holder's context. 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the security token in the calling global object is 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // compatible with the security token in the receiving global 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // object. 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int token_offset = Context::kHeaderSize + 993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Context::SECURITY_TOKEN_INDEX * kPointerSize; 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, token_offset)); 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(ip, token_offset)); 997a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&same_contexts); 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(int object_size, 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 1009a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 10105913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!FLAG_inline_new) { 10115913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (FLAG_debug_code) { 10125913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // Trash the registers to simulate an allocation failure. 10135913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(result, Operand(0x7091)); 10145913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch1, Operand(0x7191)); 10155913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch2, Operand(0x7291)); 10165913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 10175913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck jmp(gc_required); 10185913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck return; 10195913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 10205913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 1022b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!result.is(scratch2)); 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 102525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen // Make object size into bytes. 102625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 102725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen object_size *= kPointerSize; 102825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 102925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen ASSERT_EQ(0, object_size & kObjectAlignmentMask); 103025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 1031b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Check relative positions of allocation top and limit addresses. 1032b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The values must be adjacent in memory to allow the use of LDM. 1033b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Also, assert that the registers are numbered such that the values 1034b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // are loaded in the correct order. 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1037b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ExternalReference new_space_allocation_limit = 1038b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ExternalReference::new_space_allocation_limit_address(); 1039b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t top = 1040b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_top.address()); 1041b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t limit = 1042b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_limit.address()); 1043b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT((limit - top) == kPointerSize); 1044b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(result.code() < ip.code()); 1045b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1046b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Set up allocation top address and object size registers. 1047b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register topaddr = scratch1; 1048b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register obj_size_reg = scratch2; 1049b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(topaddr, Operand(new_space_allocation_top)); 1050b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(obj_size_reg, Operand(object_size)); 1051b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1052b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // This code stores a temporary value in ip. This is OK, as the code below 1053b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // does not need ip for implicit literal generation. 1054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 1055b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation top into result and allocation limit into ip. 1056b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldm(ia, topaddr, result.bit() | ip.bit()); 1057b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 1058b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_debug_code) { 1059b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Assert that result actually contains top on entry. ip is used 1060b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // immediately below so this use of ip does not cause difference with 1061b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // respect to register content between debug and release mode. 1062b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr)); 1063b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(result, ip); 1064b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Check(eq, "Unexpected allocation top"); 1065b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1066b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation limit into ip. Result already contains allocation top. 1067b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr, limit - top)); 1068a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1070a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1071a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to calculate the new top. 1072b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(scratch2, result, Operand(obj_size_reg)); 1073b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch2, Operand(ip)); 1074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1075b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch str(scratch2, MemOperand(topaddr)); 1076a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1077b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Tag object if requested. 1078a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 1079b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(result, result, Operand(kHeapObjectTag)); 1080a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1082a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1083a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1084a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(Register object_size, 1085a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1086a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 1087a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 1088a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 1089a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 10905913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!FLAG_inline_new) { 10915913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (FLAG_debug_code) { 10925913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // Trash the registers to simulate an allocation failure. 10935913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(result, Operand(0x7091)); 10945913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch1, Operand(0x7191)); 10955913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch2, Operand(0x7291)); 10965913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 10975913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck jmp(gc_required); 10985913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck return; 10995913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 11005913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 1101b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Assert that the register arguments are different and that none of 1102b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // them are ip. ip is used explicitly in the code generated below. 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 1104b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!result.is(scratch2)); 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 1106b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!result.is(ip)); 1107b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!scratch1.is(ip)); 1108b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!scratch2.is(ip)); 1109b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1110b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Check relative positions of allocation top and limit addresses. 1111b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The values must be adjacent in memory to allow the use of LDM. 1112b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Also, assert that the registers are numbered such that the values 1113b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // are loaded in the correct order. 1114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1116b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ExternalReference new_space_allocation_limit = 1117b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ExternalReference::new_space_allocation_limit_address(); 1118b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t top = 1119b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_top.address()); 1120b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t limit = 1121b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(new_space_allocation_limit.address()); 1122b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT((limit - top) == kPointerSize); 1123b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(result.code() < ip.code()); 1124b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1125b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Set up allocation top address. 1126b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register topaddr = scratch1; 1127b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(topaddr, Operand(new_space_allocation_top)); 1128b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1129b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // This code stores a temporary value in ip. This is OK, as the code below 1130b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // does not need ip for implicit literal generation. 1131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 1132b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation top into result and allocation limit into ip. 1133b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldm(ia, topaddr, result.bit() | ip.bit()); 1134b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 1135b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_debug_code) { 1136b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Assert that result actually contains top on entry. ip is used 1137b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // immediately below so this use of ip does not cause difference with 1138b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // respect to register content between debug and release mode. 1139b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr)); 1140b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(result, ip); 1141b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Check(eq, "Unexpected allocation top"); 1142b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1143b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Load allocation limit into ip. Result already contains allocation top. 1144b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ldr(ip, MemOperand(topaddr, limit - top)); 1145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1148b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // to calculate the new top. Object size may be in words so a shift is 1149b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // required to get the number of bytes. 115025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 1151b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(scratch2, result, Operand(object_size, LSL, kPointerSizeLog2)); 115225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } else { 1153b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch add(scratch2, result, Operand(object_size)); 115425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 1155b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch cmp(scratch2, Operand(ip)); 1156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1158d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Update allocation top. result temporarily holds the new top. 1159d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (FLAG_debug_code) { 1160b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch tst(scratch2, Operand(kObjectAlignmentMask)); 1161d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Check(eq, "Unaligned allocation in new space"); 1162d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1163b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch str(scratch2, MemOperand(topaddr)); 1164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Tag object if requested. 1166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 1167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(result, result, Operand(kHeapObjectTag)); 1168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::UndoAllocationInNewSpace(Register object, 1173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch) { 1174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure the object has no tag before resetting top. 1178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block and_(object, object, Operand(~kHeapObjectTagMask)); 1179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the object un-allocated is below the current top. 1181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(scratch)); 1183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(object, scratch); 1184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(lt, "Undo allocation of non allocated memory"); 1185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Write the address of the object to un-allocate as the current top. 1187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(object, MemOperand(scratch)); 1189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteString(Register result, 11933100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 11953100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 11963100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 11973100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 11983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 11993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 12003100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); 12013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(scratch1, Operand(length, LSL, 1)); // Length in bytes, not chars. 12023100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, scratch1, 12033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqTwoByteString::kHeaderSize)); 120425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 12053100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate two-byte string in new space. 12073100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 12083100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 12093100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 12103100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 12113100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 12123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 12133100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12143100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 12156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 12166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 12176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kStringMapRootIndex, 12186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 12196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 12203100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12213100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12223100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12233100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiString(Register result, 12243100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 12253100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 12263100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 12273100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 12283100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 12293100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 12303100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 12313100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqAsciiString::kHeaderSize & kObjectAlignmentMask) == 0); 12323100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(kCharSize == 1); 12333100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, length, 12343100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqAsciiString::kHeaderSize)); 123525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 12363100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12373100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate ASCII string in new space. 12383100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 12393100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 12403100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 12413100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 12423100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 12433100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 12443100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12453100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 12466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 12476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 12486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kAsciiStringMapRootIndex, 12496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 12506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 12513100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12523100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12533100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteConsString(Register result, 12553100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 12563100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 12573100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 12583100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 125925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 12603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 12613100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 12623100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 12633100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 12643100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 12656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 12666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 12676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 12686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsStringMapRootIndex, 12696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 12706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 12713100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12723100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12733100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12743100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiConsString(Register result, 12753100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 12763100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 12773100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 12783100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 127925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 12803100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 12813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 12823100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 12833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 12843100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 12856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 12866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 12876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 12886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsAsciiStringMapRootIndex, 12896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 12906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 12913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12933100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12946ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CompareObjectType(Register object, 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register map, 1296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 12986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(map, FieldMemOperand(object, HeapObject::kMapOffset)); 1299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareInstanceType(map, type_reg, type); 1300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CompareInstanceType(Register map, 1304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 1306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); 1307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(type_reg, Operand(type)); 1308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 13113100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::CheckMap(Register obj, 13123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch, 13133100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Handle<Map> map, 13143100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* fail, 13153100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu bool is_heap_object) { 13163100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (!is_heap_object) { 13173100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu BranchOnSmi(obj, fail); 13183100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 13193100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 13203100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(ip, Operand(map)); 13213100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu cmp(scratch, ip); 13223100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, fail); 13233100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 13243100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 13253100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 13267f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::CheckMap(Register obj, 13277f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 13287f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Heap::RootListIndex index, 13297f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Label* fail, 13307f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch bool is_heap_object) { 13317f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch if (!is_heap_object) { 13327f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch BranchOnSmi(obj, fail); 13337f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 13347f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 13357f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch LoadRoot(ip, index); 13367f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch cmp(scratch, ip); 13377f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch b(ne, fail); 13387f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 13397f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 13407f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 1341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::TryGetFunctionPrototype(Register function, 1342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 1344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 1345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the receiver isn't a smi. 1346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BranchOnSmi(function, miss); 1347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the function really is a function. Load map into result reg. 1349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(function, result, scratch, JS_FUNCTION_TYPE); 1350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 1351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure that the function has an instance prototype. 1353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label non_instance; 1354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); 1355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block tst(scratch, Operand(1 << Map::kHasNonInstancePrototype)); 1356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &non_instance); 1357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype or initial map from the function. 1359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, 1360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 1361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the prototype or initial map is the hole, don't return it and 1363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // simply miss the cache instead. This will allow us to allocate a 1364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // prototype object on-demand in the runtime system. 1365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kTheHoleValueRootIndex); 1366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, ip); 1367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, miss); 1368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the function does not have an initial map, we're done. 1370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 1371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(result, scratch, scratch, MAP_TYPE); 1372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &done); 1373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1374a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype from the initial map. 1375a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kPrototypeOffset)); 1376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block jmp(&done); 1377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Non-instance prototype: Fetch prototype from constructor field 1379a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in initial map. 1380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&non_instance); 1381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kConstructorOffset)); 1382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All done. 1384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 1385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallStub(CodeStub* stub, Condition cond) { 1389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(allow_stub_calls()); // stub calls are not allowed in some stubs 1390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 1391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 13943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::TailCallStub(CodeStub* stub, Condition cond) { 13953100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(allow_stub_calls()); // stub calls are not allowed in some stubs 13963100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 13973100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 13983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 13993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IllegalOperation(int num_arguments) { 1401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (num_arguments > 0) { 1402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(sp, sp, Operand(num_arguments * kPointerSize)); 1403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(r0, Heap::kUndefinedValueRootIndex); 1405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 140880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid MacroAssembler::IndexFromHash(Register hash, Register index) { 140980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the hash field contains an array index pick it out. The assert checks 141080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // that the constants for the maximum number of digits for an array index 141180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // cached in the hash field and the number of bits reserved for it does not 141280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // conflict. 141380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < 141480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen (1 << String::kArrayIndexValueBits)); 141580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We want the smi-tagged index in key. kArrayIndexValueMask has zeros in 141680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the low kHashShift bits. 141780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTag == 0); 141880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Ubfx(hash, hash, String::kHashShift, String::kArrayIndexValueBits); 141980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen mov(index, Operand(hash, LSL, kSmiTagSize)); 142080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 142180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 142280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 1423d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::IntegerToDoubleConversionWithVFP3(Register inReg, 1424d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outHighReg, 1425d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outLowReg) { 1426d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // ARMv7 VFP3 instructions to implement integer to double conversion. 1427d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block mov(r7, Operand(inReg, ASR, kSmiTagSize)); 1428e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(s15, r7); 14296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block vcvt_f64_s32(d7, s15); 1430e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(outLowReg, outHighReg, d7); 1431d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1432d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1433d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 14348defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::ObjectToDoubleVFPRegister(Register object, 14358defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister result, 14368defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 14378defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 14388defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 14398defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch3, 14408defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* not_number, 14418defd9ff6930b4e24729971a61cf7469daf119beSteve Block ObjectToDoubleFlags flags) { 14428defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 14438defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & OBJECT_NOT_SMI) == 0) { 14448defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label not_smi; 14458defd9ff6930b4e24729971a61cf7469daf119beSteve Block BranchOnNotSmi(object, ¬_smi); 14468defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Remove smi tag and convert to double. 14478defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(object, ASR, kSmiTagSize)); 14488defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch3, scratch1); 14498defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(result, scratch3); 14508defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(&done); 14518defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(¬_smi); 14528defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 14538defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Check for heap number and load double value from it. 14548defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); 14558defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch2, object, Operand(kHeapObjectTag)); 14568defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, heap_number_map); 14578defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(ne, not_number); 14588defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { 14598defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If exponent is all ones the number is either a NaN or +/-Infinity. 14608defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapNumber::kExponentOffset)); 14618defd9ff6930b4e24729971a61cf7469daf119beSteve Block Sbfx(scratch1, 14628defd9ff6930b4e24729971a61cf7469daf119beSteve Block scratch1, 14638defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentShift, 14648defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentBits); 14658defd9ff6930b4e24729971a61cf7469daf119beSteve Block // All-one value sign extend to -1. 14668defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, Operand(-1)); 14678defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(eq, not_number); 14688defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 14698defd9ff6930b4e24729971a61cf7469daf119beSteve Block vldr(result, scratch2, HeapNumber::kValueOffset); 14708defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 14718defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 14728defd9ff6930b4e24729971a61cf7469daf119beSteve Block 14738defd9ff6930b4e24729971a61cf7469daf119beSteve Block 14748defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::SmiToDoubleVFPRegister(Register smi, 14758defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 14768defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 14778defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch2) { 14788defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(smi, ASR, kSmiTagSize)); 14798defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch2, scratch1); 14808defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(value, scratch2); 14818defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 14828defd9ff6930b4e24729971a61cf7469daf119beSteve Block 14838defd9ff6930b4e24729971a61cf7469daf119beSteve Block 14849ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// Tries to get a signed int32 out of a double precision floating point heap 14859ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// number. Rounds towards 0. Branch to 'not_int32' if the double is out of the 14869ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// 32bits signed integer range. 14879ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrickvoid MacroAssembler::ConvertToInt32(Register source, 14889ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register dest, 14899ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register scratch, 14909ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register scratch2, 14919ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Label *not_int32) { 14929ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick if (CpuFeatures::IsSupported(VFP3)) { 14939ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick CpuFeatures::Scope scope(VFP3); 14949ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch, source, Operand(kHeapObjectTag)); 14959ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick vldr(d0, scratch, HeapNumber::kValueOffset); 14969ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick vcvt_s32_f64(s0, d0); 14979ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick vmov(dest, s0); 14989ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Signed vcvt instruction will saturate to the minimum (0x80000000) or 14999ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // maximun (0x7fffffff) signed 32bits integer when the double is out of 15009ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // range. When substracting one, the minimum signed integer becomes the 15019ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // maximun signed integer. 15029ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch, dest, Operand(1)); 15039ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch, Operand(LONG_MAX - 1)); 15049ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If equal then dest was LONG_MAX, if greater dest was LONG_MIN. 15059ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(ge, not_int32); 15069ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick } else { 15079ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // This code is faster for doubles that are in the ranges -0x7fffffff to 15089ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // -0x40000000 or 0x40000000 to 0x7fffffff. This corresponds almost to 15099ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // the range of signed int32 values that are not Smis. Jumps to the label 15109ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 'not_int32' if the double isn't in the range -0x80000000.0 to 15119ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 0x80000000.0 (excluding the endpoints). 15129ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Label right_exponent, done; 15139ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get exponent word. 15149ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick ldr(scratch, FieldMemOperand(source, HeapNumber::kExponentOffset)); 15159ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get exponent alone in scratch2. 15169ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Ubfx(scratch2, 15179ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick scratch, 15189ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick HeapNumber::kExponentShift, 15199ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick HeapNumber::kExponentBits); 15209ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Load dest with zero. We use this either for the final shift or 15219ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // for the answer. 15229ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dest, Operand(0, RelocInfo::NONE)); 15239ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Check whether the exponent matches a 32 bit signed int that is not a Smi. 15249ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // A non-Smi integer is 1.xxx * 2^30 so the exponent is 30 (biased). This is 15259ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // the exponent that we are fastest at and also the highest exponent we can 15269ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // handle here. 15279ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const uint32_t non_smi_exponent = HeapNumber::kExponentBias + 30; 15289ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // The non_smi_exponent, 0x41d, is too big for ARM's immediate field so we 15299ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // split it up to avoid a constant pool entry. You can't do that in general 15309ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // for cmp because of the overflow flag, but we know the exponent is in the 15319ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // range 0-2047 so there is no overflow. 15329ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick int fudge_factor = 0x400; 15339ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch2, scratch2, Operand(fudge_factor)); 15349ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch2, Operand(non_smi_exponent - fudge_factor)); 15359ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If we have a match of the int32-but-not-Smi exponent then skip some 15369ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // logic. 15379ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(eq, &right_exponent); 15389ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If the exponent is higher than that then go to slow case. This catches 15399ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // numbers that don't fit in a signed int32, infinities and NaNs. 15409ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(gt, not_int32); 15419ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 15429ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // We know the exponent is smaller than 30 (biased). If it is less than 15439ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 0 (biased) then the number is smaller in magnitude than 1.0 * 2^0, ie 15449ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // it rounds to zero. 15459ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const uint32_t zero_exponent = HeapNumber::kExponentBias + 0; 15469ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch2, scratch2, Operand(zero_exponent - fudge_factor), SetCC); 15479ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Dest already has a Smi zero. 15489ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(lt, &done); 15499ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 15509ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // We have an exponent between 0 and 30 in scratch2. Subtract from 30 to 15519ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // get how much to shift down. 15529ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick rsb(dest, scratch2, Operand(30)); 15539ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 15549ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick bind(&right_exponent); 15559ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get the top bits of the mantissa. 15569ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick and_(scratch2, scratch, Operand(HeapNumber::kMantissaMask)); 15579ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Put back the implicit 1. 15589ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick orr(scratch2, scratch2, Operand(1 << HeapNumber::kExponentShift)); 15599ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Shift up the mantissa bits to take up the space the exponent used to 15609ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // take. We just orred in the implicit bit so that took care of one and 15619ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // we want to leave the sign bit 0 so we subtract 2 bits from the shift 15629ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // distance. 15639ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const int shift_distance = HeapNumber::kNonMantissaBitsInTopWord - 2; 15649ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(scratch2, Operand(scratch2, LSL, shift_distance)); 15659ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Put sign in zero flag. 15669ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick tst(scratch, Operand(HeapNumber::kSignMask)); 15679ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get the second half of the double. For some exponents we don't 15689ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // actually need this because the bits get shifted out again, but 15699ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // it's probably slower to test than just to do it. 15709ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick ldr(scratch, FieldMemOperand(source, HeapNumber::kMantissaOffset)); 15719ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Shift down 22 bits to get the last 10 bits. 15729ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick orr(scratch, scratch2, Operand(scratch, LSR, 32 - shift_distance)); 15739ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Move down according to the exponent. 15749ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dest, Operand(scratch, LSR, dest)); 15759ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Fix sign if sign bit was set. 15769ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick rsb(dest, dest, Operand(0, RelocInfo::NONE), LeaveCC, ne); 15779ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick bind(&done); 15789ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick } 15799ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick} 15809ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 15819ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 15823100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::GetLeastBitsFromSmi(Register dst, 15833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register src, 15843100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu int num_least_bits) { 15853100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (CpuFeatures::IsSupported(ARMv7)) { 15867f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ubfx(dst, src, kSmiTagSize, num_least_bits); 15873100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } else { 15883100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(dst, Operand(src, ASR, kSmiTagSize)); 15893100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu and_(dst, dst, Operand((1 << num_least_bits) - 1)); 15903100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 15913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 15923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 15933100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::Function* f, int num_arguments) { 1595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All parameters are on the stack. r0 has the return value after call. 1596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1597a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the expected number of arguments of the runtime function is 1598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // constant, we check that the actual number of arguments match the 1599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // expectation. 1600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (f->nargs >= 0 && f->nargs != num_arguments) { 1601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block IllegalOperation(num_arguments); 1602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 1603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 16054515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // TODO(1236192): Most runtime routines don't need the number of 16064515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // arguments passed in because it is constant. At some point we 16074515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // should remove this need and make the runtime routine entry code 16084515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // smarter. 16094515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r0, Operand(num_arguments)); 16104515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r1, Operand(ExternalReference(f))); 16114515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke CEntryStub stub(1); 1612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallStub(&stub); 1613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::FunctionId fid, int num_arguments) { 1617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::FunctionForId(fid), num_arguments); 1618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1621b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid MacroAssembler::CallRuntimeSaveDoubles(Runtime::FunctionId id) { 1622b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Runtime::Function* function = Runtime::FunctionForId(id); 1623b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(r0, Operand(function->nargs)); 1624b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch mov(r1, Operand(ExternalReference(function))); 1625b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch CEntryStub stub(1); 1626b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch stub.SaveDoubles(); 1627b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch CallStub(&stub); 1628b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 1629b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1630b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1631402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::CallExternalReference(const ExternalReference& ext, 1632402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu int num_arguments) { 1633402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r0, Operand(num_arguments)); 1634402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ext)); 1635402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1636402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub stub(1); 1637402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CallStub(&stub); 1638402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 1639402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1640402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 16416ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallExternalReference(const ExternalReference& ext, 16426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 16436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 1644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(1236192): Most runtime routines don't need the number of 1645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments passed in because it is constant. At some point we 1646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // should remove this need and make the runtime routine entry code 1647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // smarter. 1648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(num_arguments)); 16496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpToExternalReference(ext); 1650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 16536ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, 16546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 16556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 16566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TailCallExternalReference(ExternalReference(fid), num_arguments, result_size); 16576ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 16586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 16596ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 16606ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpToExternalReference(const ExternalReference& builtin) { 1661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) 1662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Thumb mode builtin. 1663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((reinterpret_cast<intptr_t>(builtin.address()) & 1) == 1); 1664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r1, Operand(builtin)); 1666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CEntryStub stub(1); 1667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(stub.GetCode(), RelocInfo::CODE_TARGET); 1668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, 1672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeJSFlags flags) { 1673402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu GetBuiltinEntry(r2, id); 1674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flags == CALL_JS) { 1675402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(r2); 1676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flags == JUMP_JS); 1678402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Jump(r2); 1679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1683791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinFunction(Register target, 1684791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block Builtins::JavaScript id) { 16856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the builtins object into target register. 16866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 16876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); 1688402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Load the JavaScript builtin function from the builtins object. 1689791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(target, 16906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JSBuiltinsObject::OffsetOfFunctionWithId(id))); 1691791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block} 1692791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block 16936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1694791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { 1695791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ASSERT(!target.is(r1)); 1696791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block GetBuiltinFunction(r1, id); 16976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the code entry point from the builtins object. 1698791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 1699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SetCounter(StatsCounter* counter, int value, 1703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(value)); 1706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IncrementCounter(StatsCounter* counter, int value, 1713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 1715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 1718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(scratch1, scratch1, Operand(value)); 1719a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1720a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1721a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1722a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::DecrementCounter(StatsCounter* counter, int value, 1725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 1727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 1730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sub(scratch1, scratch1, Operand(value)); 1731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Assert(Condition cc, const char* msg) { 1737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) 1738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(cc, msg); 1739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 17429dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::AssertRegisterIsRoot(Register reg, 17439dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Heap::RootListIndex index) { 17449dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (FLAG_debug_code) { 17459dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen LoadRoot(ip, index); 17469dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen cmp(reg, ip); 17479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Check(eq, "Register did not match expected root"); 17489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 17499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 17509dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 17519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 1752756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AssertFastElements(Register elements) { 1753756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick if (FLAG_debug_code) { 1754756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT(!elements.is(ip)); 1755756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Label ok; 1756756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick push(elements); 1757756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ldr(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); 1758756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedArrayMapRootIndex); 1759756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 1760756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 1761756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex); 1762756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 1763756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 1764756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Abort("JSObject with fast elements map has slow elements"); 1765756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick bind(&ok); 1766756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick pop(elements); 1767756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick } 1768756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 1769756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1770756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Check(Condition cc, const char* msg) { 1772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label L; 1773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(cc, &L); 1774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Abort(msg); 1775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 1776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&L); 1777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Abort(const char* msg) { 17818defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label abort_start; 17828defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&abort_start); 1783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We want to pass the msg string like a smi to avoid GC 1784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // problems, however msg is not guaranteed to be aligned 1785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // properly. Instead, we pass an aligned pointer that is 1786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a proper v8 smi, but also pass the alignment difference 1787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // from the real pointer as a smi. 1788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p1 = reinterpret_cast<intptr_t>(msg); 1789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; 1790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); 1791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (msg != NULL) { 1793a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment("Abort message: "); 1794a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment(msg); 1795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1797d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Disable stub call restrictions to always allow calls to abort. 1798d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block set_allow_stub_calls(true); 1799d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(p0)); 1801a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 1802a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(Smi::FromInt(p1 - p0))); 1803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 1804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::kAbort, 2); 1805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 18068defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (is_const_pool_blocked()) { 18078defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If the calling code cares about the exact number of 18088defd9ff6930b4e24729971a61cf7469daf119beSteve Block // instructions generated, we insert padding here to keep the size 18098defd9ff6930b4e24729971a61cf7469daf119beSteve Block // of the Abort macro constant. 18108defd9ff6930b4e24729971a61cf7469daf119beSteve Block static const int kExpectedAbortInstructions = 10; 18118defd9ff6930b4e24729971a61cf7469daf119beSteve Block int abort_instructions = InstructionsGeneratedSince(&abort_start); 18128defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(abort_instructions <= kExpectedAbortInstructions); 18138defd9ff6930b4e24729971a61cf7469daf119beSteve Block while (abort_instructions++ < kExpectedAbortInstructions) { 18148defd9ff6930b4e24729971a61cf7469daf119beSteve Block nop(); 18158defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 18168defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 1817a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1818a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1819a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1820d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::LoadContext(Register dst, int context_chain_length) { 1821d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (context_chain_length > 0) { 1822d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Move up the chain of contexts to the context containing the slot. 1823d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::CLOSURE_INDEX))); 1824d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Load the function context (which is the incoming, outer context). 1825d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 1826d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block for (int i = 1; i < context_chain_length; i++) { 1827d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); 1828d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 1829d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1830d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The context may be an intermediate context, not a function context. 1831d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); 1832d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else { // Slot is in the current function context. 1833d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The context may be an intermediate context, not a function context. 1834d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::FCONTEXT_INDEX))); 1835d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1836d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1837d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1838d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 18398a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wangvoid MacroAssembler::LoadGlobalFunction(int index, Register function) { 18408a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the global or builtins object from the current context. 18418a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(function, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 18428a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the global context from the global or builtins object. 18438a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(function, FieldMemOperand(function, 18448a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang GlobalObject::kGlobalContextOffset)); 18458a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the function from the global context. 18468a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(function, MemOperand(function, Context::SlotOffset(index))); 18478a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang} 18488a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 18498a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 18508a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wangvoid MacroAssembler::LoadGlobalFunctionInitialMap(Register function, 18518a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Register map, 18528a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Register scratch) { 18538a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang // Load the initial map. The global functions all have initial maps. 18548a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang ldr(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 18558a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang if (FLAG_debug_code) { 18568a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Label ok, fail; 18578a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, false); 18588a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang b(&ok); 18598a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang bind(&fail); 18608a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang Abort("Global functions must have initial map"); 18618a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang bind(&ok); 18628a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang } 18638a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang} 18648a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 18658a31eba00023874d4a1dcdc5f411cc4336776874Shimeng (Simon) Wang 18663100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfNotBothSmi(Register reg1, 18673100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 18683100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_not_both_smi) { 18693100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT_EQ(0, kSmiTag); 18703100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 18713100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), eq); 18723100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, on_not_both_smi); 18733100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 18743100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 18753100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 18763100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfEitherSmi(Register reg1, 18773100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 18783100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_either_smi) { 18793100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT_EQ(0, kSmiTag); 18803100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 18813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), ne); 18823100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(eq, on_either_smi); 18833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 18843100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 18853100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1886756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AbortIfSmi(Register object) { 1887756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT_EQ(0, kSmiTag); 1888756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick tst(object, Operand(kSmiTagMask)); 1889756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Assert(ne, "Operand is a smi"); 1890756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 1891756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1892756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1893d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNonSmisNotBothSequentialAsciiStrings( 1894d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register first, 1895d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 1896d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 1897d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 1898d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 1899d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Test that both first and second are sequential ASCII strings. 1900d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Assume that they are non-smis. 1901d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); 1902d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); 1903d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); 1904d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); 19056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpIfBothInstanceTypesAreNotSequentialAscii(scratch1, 19076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 19086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 19096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 19106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block failure); 1911d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 1912d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 1913d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first, 1914d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 1915d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 1916d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 1917d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 1918d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Check that neither is a smi. 1919d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ASSERT_EQ(0, kSmiTag); 1920d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke and_(scratch1, first, Operand(second)); 1921d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke tst(scratch1, Operand(kSmiTagMask)); 1922d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke b(eq, failure); 1923d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke JumpIfNonSmisNotBothSequentialAsciiStrings(first, 1924d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke second, 1925d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch1, 1926d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch2, 1927d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke failure); 1928d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 1929d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 1930d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 19316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Allocates a heap number or jumps to the need_gc label if the young space 19326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// is full and a scavenge is needed. 19336ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::AllocateHeapNumber(Register result, 19346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 19356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 19369dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register heap_number_map, 19376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* gc_required) { 19386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Allocate an object in the heap for the heap number and tag it as a heap 19396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // object. 194025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(HeapNumber::kSize, 19416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block result, 19426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 19436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 19446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block gc_required, 19456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TAG_OBJECT); 19466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Store heap number map in the allocated object. 19489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); 19499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen str(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); 19506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 19516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19538defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::AllocateHeapNumberWithValue(Register result, 19548defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 19558defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 19568defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 19578defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 19588defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* gc_required) { 19598defd9ff6930b4e24729971a61cf7469daf119beSteve Block AllocateHeapNumber(result, scratch1, scratch2, heap_number_map, gc_required); 19608defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch1, result, Operand(kHeapObjectTag)); 19618defd9ff6930b4e24729971a61cf7469daf119beSteve Block vstr(value, scratch1, HeapNumber::kValueOffset); 19628defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 19638defd9ff6930b4e24729971a61cf7469daf119beSteve Block 19648defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1965bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch// Copies a fixed number of fields of heap objects from src to dst. 1966bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdochvoid MacroAssembler::CopyFields(Register dst, 1967bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register src, 1968bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch RegList temps, 1969bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch int field_count) { 1970bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // At least one bit set in the first 15 registers. 1971bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & ((1 << 15) - 1)) != 0); 1972bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & dst.bit()) == 0); 1973bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & src.bit()) == 0); 1974bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Primitive implementation using only one temporary register. 1975bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1976bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register tmp = no_reg; 1977bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Find a temp register in temps list. 1978bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < 15; i++) { 1979bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch if ((temps & (1 << i)) != 0) { 1980bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch tmp.set_code(i); 1981bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch break; 1982bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1983bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1984bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT(!tmp.is(no_reg)); 1985bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1986bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < field_count; i++) { 1987bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ldr(tmp, FieldMemOperand(src, i * kPointerSize)); 1988bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch str(tmp, FieldMemOperand(dst, i * kPointerSize)); 1989bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1990bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch} 1991bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1992bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 19938defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::CountLeadingZeros(Register zeros, // Answer. 19948defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register source, // Input. 19958defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 19968defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(source) || !source.is(zeros)); 19978defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(scratch)); 19988defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!scratch.is(ip)); 19998defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!source.is(ip)); 20008defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(ip)); 20016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#ifdef CAN_USE_ARMV5_INSTRUCTIONS 20026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block clz(zeros, source); // This instruction is only supported after ARM5. 20036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 20049ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(zeros, Operand(0, RelocInfo::NONE)); 20058defd9ff6930b4e24729971a61cf7469daf119beSteve Block Move(scratch, source); 20066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 16. 20076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xffff0000)); 20086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(16), LeaveCC, eq); 20096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 16), LeaveCC, eq); 20106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 8. 20116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xff000000)); 20126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(8), LeaveCC, eq); 20136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 8), LeaveCC, eq); 20146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 4. 20156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xf0000000)); 20166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(4), LeaveCC, eq); 20176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 4), LeaveCC, eq); 20186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 2. 20196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xc0000000)); 20206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(2), LeaveCC, eq); 20216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 2), LeaveCC, eq); 20226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top bit. 20236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0x80000000u)); 20246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(1), LeaveCC, eq); 20256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 20266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 20276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20296ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialAscii( 20306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register first, 20316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register second, 20326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 20336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 20346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 20356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 20366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 20376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 20386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch1, first, Operand(kFlatAsciiStringMask)); 20396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch2, second, Operand(kFlatAsciiStringMask)); 20406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch1, Operand(kFlatAsciiStringTag)); 20416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Ignore second test if first test failed. 20426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch2, Operand(kFlatAsciiStringTag), eq); 20436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 20446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 20456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20476ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(Register type, 20486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 20496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 20506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 20516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 20526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 20536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, type, Operand(kFlatAsciiStringMask)); 20546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(kFlatAsciiStringTag)); 20556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 20566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 20576ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20596ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) { 20606ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = ActivationFrameAlignment(); 20616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Up to four simple arguments are passed in registers r0..r3. 20626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4; 20636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 20646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make stack end at alignment and make room for num_arguments - 4 words 20656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // and the original value of sp. 20666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, sp); 20676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); 20686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 20696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(sp, sp, Operand(-frame_alignment)); 20706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); 20716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 20726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand(stack_passed_arguments * kPointerSize)); 20736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 20746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 20756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20776ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(ExternalReference function, 20786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments) { 20796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(ip, Operand(function)); 20806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block CallCFunction(ip, num_arguments); 20816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 20826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20846ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(Register function, int num_arguments) { 20856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make sure that the stack is aligned before calling a C function unless 20866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // running in the simulator. The simulator has its own alignment check which 20876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // provides more information. 20886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if defined(V8_HOST_ARCH_ARM) 20896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_debug_code) { 20906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = OS::ActivationFrameAlignment(); 20916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 20926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 20936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 20946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label alignment_as_expected; 20956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand(frame_alignment_mask)); 20966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(eq, &alignment_as_expected); 20976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Don't use Check here, as it will call Runtime_Abort possibly 20986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // re-entering here. 20996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block stop("Unexpected alignment"); 21006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(&alignment_as_expected); 21016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 21026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 21036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 21046ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 21056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Just call directly. The function called cannot cause a GC, or 21066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // allow preemption, so the return address in the link register 21076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // stays correct. 21086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Call(function); 21096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4; 21106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (OS::ActivationFrameAlignment() > kPointerSize) { 21116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); 21126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 21136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(sp, sp, Operand(stack_passed_arguments * sizeof(kPointerSize))); 21146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 21156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 21166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 21176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 2119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::CodePatcher(byte* address, int instructions) 2120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : address_(address), 2121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block instructions_(instructions), 2122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block size_(instructions * Assembler::kInstrSize), 2123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm_(address, size_ + Assembler::kGap) { 2124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create a new macro assembler pointing to the address of the code to patch. 2125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The size is adjusted with kGap on order for the assembler to generate size 2126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bytes of instructions without failing with buffer size constraints. 2127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 2128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::~CodePatcher() { 2132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Indicate that code has changed. 2133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CPU::FlushICache(address_, size_); 2134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the code was patched as expected. 2136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.pc_ == address_ + size_); 2137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 2138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Instr x) { 2142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(x); 2143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Address addr) { 2147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(reinterpret_cast<Instr>(addr)); 2148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // ENABLE_DEBUGGER_SUPPORT 2150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 2153f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 2154f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#endif // V8_TARGET_ARCH_ARM 2155