macro-assembler-arm.cc revision 3e5fa29ddb82551500b118e9bf37af3966277b70
1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2006-2009 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 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 174d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::StackLimitCheck(Label* on_stack_overflow) { 175d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block LoadRoot(ip, Heap::kStackLimitRootIndex); 176d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block cmp(sp, Operand(ip)); 177d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block b(lo, on_stack_overflow); 178d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 179d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 180d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 181e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Drop(int count, Condition cond) { 182e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke if (count > 0) { 183e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(count * kPointerSize), LeaveCC, cond); 184e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke } 185e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 186e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 187e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 1887f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::Swap(Register reg1, 1897f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register reg2, 1907f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 1917f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Condition cond) { 1926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (scratch.is(no_reg)) { 1937f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 1947f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg2, reg2, Operand(reg1), LeaveCC, cond); 1957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 1966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 1977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(scratch, reg1, LeaveCC, cond); 1987f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg1, reg2, LeaveCC, cond); 1997f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(reg2, scratch, LeaveCC, cond); 2006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 2016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 204e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Call(Label* target) { 205e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke bl(target); 206e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 207e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 208e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 209e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::Move(Register dst, Handle<Object> value) { 210e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(dst, Operand(value)); 211e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 212d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 213d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 2146ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::Move(Register dst, Register src) { 2156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (!dst.is(src)) { 2166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(dst, src); 2176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 2186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 2196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2219dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::And(Register dst, Register src1, const Operand& src2, 2229dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2233e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu if (!src2.is_reg() && 2243e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu !src2.must_use_constant_pool() && 2253e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu src2.immediate() == 0) { 2269ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dst, Operand(0, RelocInfo::NONE), LeaveCC, cond); 2273e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 2283e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu } else if (!src2.is_single_instruction() && 2293e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu !src2.must_use_constant_pool() && 2303e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu CpuFeatures::IsSupported(ARMv7) && 2313e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu IsPowerOf2(src2.immediate() + 1)) { 2323e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu ubfx(dst, src1, 0, WhichPowerOf2(src2.immediate() + 1), cond); 2333e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 2343e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu } else { 2353e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu and_(dst, src1, src2, LeaveCC, cond); 2369dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2379dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2389dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2399dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2409dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Ubfx(Register dst, Register src1, int lsb, int width, 2419dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2429dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2439dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2449dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2459dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 2469dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (lsb != 0) { 2479dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSR, lsb), LeaveCC, cond); 2489dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2499dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2509dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ubfx(dst, src1, lsb, width, cond); 2519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2529dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2539dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2549dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2559dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Sbfx(Register dst, Register src1, int lsb, int width, 2569dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Condition cond) { 2579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2599dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2609dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen and_(dst, src1, Operand(mask), LeaveCC, cond); 2619dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_up = 32 - lsb - width; 2629dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int shift_down = lsb + shift_up; 2639dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_up != 0) { 2649dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, LSL, shift_up), LeaveCC, cond); 2659dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2669dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (shift_down != 0) { 2679dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(dst, Operand(dst, ASR, shift_down), LeaveCC, cond); 2689dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2699dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2709dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen sbfx(dst, src1, lsb, width, cond); 2719dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2729dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2739dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2749dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2759dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::Bfc(Register dst, int lsb, int width, Condition cond) { 2769dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(lsb < 32); 2779dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 2789dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen int mask = (1 << (width + lsb)) - 1 - ((1 << lsb) - 1); 2799dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bic(dst, dst, Operand(mask)); 2809dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else { 2819dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen bfc(dst, lsb, width, cond); 2829dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 2839dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2849dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 2859dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 28650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsenvoid MacroAssembler::Usat(Register dst, int satpos, const Operand& src, 28750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Condition cond) { 28850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!CpuFeatures::IsSupported(ARMv7)) { 28950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(!dst.is(pc) && !src.rm().is(pc)); 29050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((satpos >= 0) && (satpos <= 31)); 29150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // These asserts are required to ensure compatibility with the ARMv7 29350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen // implementation. 29450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT((src.shift_op() == ASR) || (src.shift_op() == LSL)); 29550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen ASSERT(src.rs().is(no_reg)); 29650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 29750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen Label done; 29850ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen int satval = (1 << satpos) - 1; 29950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 30050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (cond != al) { 30150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(NegateCondition(cond), &done); // Skip saturate if !condition. 30250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 30350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen if (!(src.is_reg() && dst.is(src.rm()))) { 30450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, src); 30550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 30650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen tst(dst, Operand(~satval)); 30750ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen b(eq, &done); 3089ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dst, Operand(0, RelocInfo::NONE), LeaveCC, mi); // 0 if negative. 30950ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen mov(dst, Operand(satval), LeaveCC, pl); // satval if positive. 31050ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen bind(&done); 31150ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } else { 31250ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen usat(dst, satpos, src, cond); 31350ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen } 31450ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen} 31550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 31650ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Empty the const pool. 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CheckConstPool(true, true); 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(pc, pc, Operand(index, 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LSL, 322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assembler::arm::Instr::kInstrSizeLog2 - kSmiTagSize)); 323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); 324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block nop(); // Jump table alignment. 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < targets.length(); i++) { 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(targets[i]); 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LoadRoot(Register destination, 332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Heap::RootListIndex index, 333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Condition cond) { 3343100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(destination, MemOperand(roots, index << kPointerSizeLog2), cond); 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 33825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsenvoid MacroAssembler::StoreRoot(Register source, 33925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Heap::RootListIndex index, 34025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen Condition cond) { 34125f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen str(source, MemOperand(roots, index << kPointerSizeLog2), cond); 34225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen} 34325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 34425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 3456ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::RecordWriteHelper(Register object, 3468defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 3478defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 3486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_debug_code) { 3496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Check that the object is not in new space. 3506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label not_in_new_space; 3518defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, ne, ¬_in_new_space); 3526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Abort("new-space object passed to RecordWriteHelper"); 3536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(¬_in_new_space); 3546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 3554515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 3567f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Calculate page address. 3579dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Bfc(object, 0, kPageSizeBits); 3589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 3599dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Calculate region number. 3608defd9ff6930b4e24729971a61cf7469daf119beSteve Block Ubfx(address, address, Page::kRegionSizeLog2, 3619dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen kPageSizeBits - Page::kRegionSizeLog2); 362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3637f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Mark region dirty. 3648defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(1)); 3668defd9ff6930b4e24729971a61cf7469daf119beSteve Block orr(scratch, scratch, Operand(ip, LSL, address)); 3678defd9ff6930b4e24729971a61cf7469daf119beSteve Block str(scratch, MemOperand(object, Page::kDirtyFlagOffset)); 3686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3716ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InNewSpace(Register object, 3726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 3736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Condition cc, 3746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* branch) { 3756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(cc == eq || cc == ne); 3766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, object, Operand(ExternalReference::new_space_mask())); 3776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(ExternalReference::new_space_start())); 3786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(cc, branch); 3796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Will clobber 4 registers: object, offset, scratch, ip. The 3836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// register 'object' contains a heap object pointer. The heap object 3846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// tag is shifted away. 3859dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::RecordWrite(Register object, 3869dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Operand offset, 3879dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch0, 3889dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register scratch1) { 3896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The compiled code assumes that record write doesn't change the 3906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // context register, so we check that none of the clobbered 3916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // registers are cp. 3929dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen ASSERT(!object.is(cp) && !scratch0.is(cp) && !scratch1.is(cp)); 3936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label done; 3956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // First, test that the object is not in the new space. We cannot set 3977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // region marks for new space pages. 3989dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen InNewSpace(object, scratch0, eq, &done); 3996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 4008defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Add offset into the object. 4018defd9ff6930b4e24729971a61cf7469daf119beSteve Block add(scratch0, object, offset); 4028defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Record the actual write. 4048defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, scratch0, scratch1); 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 4074515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke 4084515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // Clobber all input registers when running with the debug-code flag 4094515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // turned on to provoke errors. 4104515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke if (FLAG_debug_code) { 4116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 4129dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch0, Operand(BitCast<int32_t>(kZapValue))); 4139dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen mov(scratch1, Operand(BitCast<int32_t>(kZapValue))); 4144515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke } 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4188defd9ff6930b4e24729971a61cf7469daf119beSteve Block// Will clobber 4 registers: object, address, scratch, ip. The 4198defd9ff6930b4e24729971a61cf7469daf119beSteve Block// register 'object' contains a heap object pointer. The heap object 4208defd9ff6930b4e24729971a61cf7469daf119beSteve Block// tag is shifted away. 4218defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::RecordWrite(Register object, 4228defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register address, 4238defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 4248defd9ff6930b4e24729971a61cf7469daf119beSteve Block // The compiled code assumes that record write doesn't change the 4258defd9ff6930b4e24729971a61cf7469daf119beSteve Block // context register, so we check that none of the clobbered 4268defd9ff6930b4e24729971a61cf7469daf119beSteve Block // registers are cp. 4278defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!object.is(cp) && !address.is(cp) && !scratch.is(cp)); 4288defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4298defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 4308defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4318defd9ff6930b4e24729971a61cf7469daf119beSteve Block // First, test that the object is not in the new space. We cannot set 4328defd9ff6930b4e24729971a61cf7469daf119beSteve Block // region marks for new space pages. 4338defd9ff6930b4e24729971a61cf7469daf119beSteve Block InNewSpace(object, scratch, eq, &done); 4348defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4358defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Record the actual write. 4368defd9ff6930b4e24729971a61cf7469daf119beSteve Block RecordWriteHelper(object, address, scratch); 4378defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4388defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 4398defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4408defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Clobber all input registers when running with the debug-code flag 4418defd9ff6930b4e24729971a61cf7469daf119beSteve Block // turned on to provoke errors. 4428defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (FLAG_debug_code) { 4438defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(object, Operand(BitCast<int32_t>(kZapValue))); 4448defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(address, Operand(BitCast<int32_t>(kZapValue))); 4458defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch, Operand(BitCast<int32_t>(kZapValue))); 4468defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 4478defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 4488defd9ff6930b4e24729971a61cf7469daf119beSteve Block 4498defd9ff6930b4e24729971a61cf7469daf119beSteve Block 450f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Ldrd(Register dst1, Register dst2, 451f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& src, Condition cond) { 452f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(src.rm().is(no_reg)); 453f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!dst1.is(lr)); // r14. 454f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, dst1.code() % 2); 455f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(dst1.code() + 1, dst2.code()); 456f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 457f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two ldr instructions if ldrd is not available. 458f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (CpuFeatures::IsSupported(ARMv7)) { 459f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 460f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldrd(dst1, dst2, src, cond); 461f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 462f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand src2(src); 463f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke src2.set_offset(src2.offset() + 4); 464f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (dst1.is(src.rn())) { 465f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 466f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 467f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 468f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst1, src, cond); 469f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ldr(dst2, src2, cond); 470f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 471f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 472f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 473f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 474f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 475f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarkevoid MacroAssembler::Strd(Register src1, Register src2, 476f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke const MemOperand& dst, Condition cond) { 477f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(dst.rm().is(no_reg)); 478f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT(!src1.is(lr)); // r14. 479f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(0, src1.code() % 2); 480f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke ASSERT_EQ(src1.code() + 1, src2.code()); 481f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 482f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Generate two str instructions if strd is not available. 483f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke if (CpuFeatures::IsSupported(ARMv7)) { 484f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke CpuFeatures::Scope scope(ARMv7); 485f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke strd(src1, src2, dst, cond); 486f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } else { 487f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke MemOperand dst2(dst); 488f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke dst2.set_offset(dst2.offset() + 4); 489f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src1, dst, cond); 490f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke str(src2, dst2, cond); 491f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke } 492f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke} 493f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 494f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::EnterFrame(StackFrame::Type type) { 496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0-r3: preserved 497a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, cp.bit() | fp.bit() | lr.bit()); 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(Smi::FromInt(type))); 499a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 500a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(CodeObject())); 501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(ip); 502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(fp, sp, Operand(3 * kPointerSize)); // Adjust FP to point to saved FP. 503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::LeaveFrame(StackFrame::Type type) { 507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: preserved 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: preserved 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: preserved 510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 511a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Drop the execution stack down to the frame pointer and restore 512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the caller frame pointer and return address. 513a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, fp); 514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia_w, sp, fp.bit() | lr.bit()); 515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 516a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 51880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid MacroAssembler::EnterExitFrame() { 519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the argv pointer and keep it in a callee-saved register. 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0 is argc. 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r6, sp, Operand(r0, LSL, kPointerSizeLog2)); 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sub(r6, r6, Operand(kPointerSize)); 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute callee's stack pointer before making changes and save it as 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ip register so that it is restored as sp register on exit, thereby 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // popping the args. 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ip = sp + kPointerSize * #args; 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(ip, sp, Operand(r0, LSL, kPointerSizeLog2)); 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Prepare the stack to be aligned when calling into C. After this point there 5326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // are 5 pushes before the call into C, so the stack needs to be aligned after 5336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // 5 pushes. 5346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = ActivationFrameAlignment(); 5356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 5366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment != kPointerSize) { 5376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The following code needs to be more general if this assert does not hold. 5386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(frame_alignment == 2 * kPointerSize); 5396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // With 5 pushes left the frame must be unaligned at this point. 5406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(r7, Operand(Smi::FromInt(0))); 5416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand((frame_alignment - kPointerSize) & frame_alignment_mask)); 5426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block push(r7, eq); // Push if aligned to make it unaligned. 5436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Push in reverse order: caller_fp, sp_on_exit, and caller_pc. 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, fp.bit() | ip.bit() | lr.bit()); 547402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(fp, Operand(sp)); // Setup new frame pointer. 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 549402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(ip, Operand(CodeObject())); 550402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu push(ip); // Accessed from ExitFrame::code_slot. 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the frame pointer and the context in top. 553a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_c_entry_fp_address))); 554a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(fp, MemOperand(ip)); 555a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_context_address))); 556a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(cp, MemOperand(ip)); 557a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 558a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Setup argc and the builtin function in callee-saved registers. 559a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r4, Operand(r0)); 560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r5, Operand(r1)); 561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5646ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::InitializeNewString(Register string, 5656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register length, 5666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::RootListIndex map_index, 5676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 5686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2) { 5696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(length, LSL, kSmiTagSize)); 5706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block LoadRoot(scratch2, map_index); 5716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kLengthOffset)); 5726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch1, Operand(String::kEmptyHashField)); 5736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); 5746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); 5756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 5766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 5786ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockint MacroAssembler::ActivationFrameAlignment() { 579a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(V8_HOST_ARCH_ARM) 580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Running on the real platform. Use the alignment as mandated by the local 581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // environment. 582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: This will break if we ever start generating snapshots on one ARM 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // platform for another ARM platform with a different alignment. 5846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return OS::ActivationFrameAlignment(); 585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else // defined(V8_HOST_ARCH_ARM) 586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we are using the simulator then we should always align to the expected 587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // alignment. As the simulator is used to generate snapshots we do not know 5886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // if the target platform will need alignment, so this is controlled from a 5896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // flag. 5906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return FLAG_sim_stack_alignment; 591a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // defined(V8_HOST_ARCH_ARM) 592a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 59580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid MacroAssembler::LeaveExitFrame() { 596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Clear top frame. 5979ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(r3, Operand(0, RelocInfo::NONE)); 598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_c_entry_fp_address))); 599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore current context from top and clear it in debug mode. 602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(ip, Operand(ExternalReference(Top::k_context_address))); 603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, MemOperand(ip)); 604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(r3, MemOperand(ip)); 606a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 607a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 608a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Pop the arguments, restore registers, and return. 609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(sp, Operand(fp)); // respect ABI stack constraint 610a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldm(ia, sp, fp.bit() | sp.bit() | pc.bit()); 611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokePrologue(const ParameterCount& expected, 615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> code_constant, 617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg, 618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* done, 619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool definitely_matches = false; 621a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label regular_invoke; 622a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 623a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether the expected and actual arguments count match. If not, 624a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setup registers according to contract with ArgumentsAdaptorTrampoline: 625a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r0: actual arguments count 626a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r1: function (passed through to callee) 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r2: expected arguments count 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // r3: callee code entry 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The code below is made a lot easier because the calling code already sets 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // up actual and expected registers according to the contract if values are 632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // passed in registers. 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate() || actual.reg().is(r0)); 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(expected.is_immediate() || expected.reg().is(r2)); 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((!code_constant.is_null() && code_reg.is(no_reg)) || code_reg.is(r3)); 636a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.is_immediate()) { 638a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(actual.is_immediate()); 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == actual.immediate()) { 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; 644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (expected.immediate() == sentinel) { 645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Don't worry about adapting arguments for builtins that 646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // don't want that done. Skip adaption code by making it look 647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // like we have a match between expected and actual number of 648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments. 649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block definitely_matches = true; 650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r2, Operand(expected.immediate())); 652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 654a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (actual.is_immediate()) { 656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.immediate())); 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(actual.immediate())); 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(expected.reg(), Operand(actual.reg())); 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, ®ular_invoke); 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!definitely_matches) { 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!code_constant.is_null()) { 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(code_constant)); 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code> adaptor = 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)); 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(adaptor, RelocInfo::CODE_TARGET); 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(done); 676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(adaptor, RelocInfo::CODE_TARGET); 678a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(®ular_invoke); 680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 683a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Register code, 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag); 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code); 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flag == JUMP_FUNCTION); 695a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code); 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeCode(Handle<Code> code, 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& expected, 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode, 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokePrologue(expected, actual, code, no_reg, &done, flag); 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flag == CALL_FUNCTION) { 713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(code, rmode); 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(code, rmode); 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Continue here if InvokePrologue does handle the invocation due to 719a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // mismatched parameter counts. 720a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 721a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 722a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeFunction(Register fun, 725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ParameterCount& actual, 726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeFlag flag) { 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Contract with called JS functions requires that function is passed in r1. 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(fun.is(r1)); 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register expected_reg = r2; 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register code_reg = r3; 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(expected_reg, 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(code_reg, 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SharedFunctionInfo::kFormalParameterCountOffset)); 7387f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch mov(expected_reg, Operand(expected_reg, ASR, kSmiTagSize)); 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(code_reg, 740791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ParameterCount expected(expected_reg); 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeCode(code_reg, expected, actual, flag); 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 747402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::InvokeFunction(JSFunction* function, 748402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu const ParameterCount& actual, 749402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu InvokeFlag flag) { 750402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(function->is_compiled()); 751402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 752402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Get the function and setup the context. 753402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(Handle<JSFunction>(function))); 754402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); 755402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 756402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Invoke the cached code. 757402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Handle<Code> code(function->code()); 758402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ParameterCount expected(function->shared()->formal_parameter_count()); 759402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag); 760402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 761402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 762402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 76380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef ENABLE_DEBUGGER_SUPPORT 764402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::DebugBreak() { 765402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu ASSERT(allow_stub_calls()); 7669ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(r0, Operand(0, RelocInfo::NONE)); 767402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ExternalReference(Runtime::kDebugBreak))); 768402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub ces(1); 769402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); 770402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::PushTryHandler(CodeLocation try_location, 775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block HandlerType type) { 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adjust this code if not the case. 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); 778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The pc (return address) is passed in register lr. 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (try_location == IN_JAVASCRIPT) { 780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (type == TRY_CATCH_HANDLER) { 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_CATCH)); 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(StackHandler::TRY_FINALLY)); 784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r3.bit() | fp.bit() | lr.bit()); 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r3, Operand(ExternalReference(Top::k_handler_address))); 791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r1, MemOperand(r3)); 792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 793a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r1); 794a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r3)); 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 797a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Must preserve r0-r4, r5-r7 are available. 798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(try_location == IN_JS_ENTRY); 799a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The frame pointer does not point to a JS frame so we save NULL 800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for fp. We expect the code throwing an exception to check fp 801a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // before dereferencing it to restore the context. 8029ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(ip, Operand(0, RelocInfo::NONE)); // To save a NULL frame pointer. 803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r6, Operand(StackHandler::ENTRY)); 804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize 805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kFPOffset == 2 * kPointerSize 806a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block && StackHandlerConstants::kPCOffset == 3 * kPointerSize); 807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block stm(db_w, sp, r6.bit() | ip.bit() | lr.bit()); 808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Save the current handler as the next handler. 809a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r7, Operand(ExternalReference(Top::k_handler_address))); 810a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(r6, MemOperand(r7)); 811a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StackHandlerConstants::kNextOffset == 0); 812a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r6); 813a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Link this handler as the new current one. 814a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(sp, MemOperand(r7)); 815a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 816a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 817a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 818a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 819e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarkevoid MacroAssembler::PopTryHandler() { 820e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke ASSERT_EQ(0, StackHandlerConstants::kNextOffset); 821e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke pop(r1); 822e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke mov(ip, Operand(ExternalReference(Top::k_handler_address))); 823e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke add(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); 824e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke str(r1, MemOperand(ip)); 825e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 826e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 827e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 828a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, 829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 830a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label same_contexts; 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 833a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(scratch)); 834a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!holder_reg.is(ip)); 835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch.is(ip)); 836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load current lexical context from the stack frame. 838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); 839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // In debug mode, make sure the lexical context is set. 840a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 8419ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch, Operand(0, RelocInfo::NONE)); 842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "we should not have an empty lexical context"); 843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 844a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 845a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load the global context of the current context. 846a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; 847a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, offset)); 848a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, GlobalObject::kGlobalContextOffset)); 849a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) { 852a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 855a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Read the first word and compare to the global_context_map. 857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if both contexts are the same. 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 867a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, &same_contexts); 868a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the context is a global context. 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) { 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(119): avoid push(holder_reg)/pop(holder_reg) 872a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Cannot use ip as a temporary in this verification code. Due to the fact 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // that ip is clobbered as part of cmp with an object Operand. 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(holder_reg); // Temporarily save holder on the stack. 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(holder_reg, ip); // Move ip to its holding place. 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kNullValueRootIndex); 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(ne, "JSGlobalProxy::context() should not be null."); 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kGlobalContextMapRootIndex); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(holder_reg, ip); 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "JSGlobalObject::global_context should be a global context."); 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip is not needed. ip is reloaded below. 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pop(holder_reg); // Restore holder. 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Restore ip to holder's context. 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(holder_reg, JSGlobalProxy::kContextOffset)); 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the security token in the calling global object is 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // compatible with the security token in the receiving global 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // object. 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int token_offset = Context::kHeaderSize + 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Context::SECURITY_TOKEN_INDEX * kPointerSize; 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, FieldMemOperand(scratch, token_offset)); 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(ip, FieldMemOperand(ip, token_offset)); 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(scratch, Operand(ip)); 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&same_contexts); 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(int object_size, 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 9115913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!FLAG_inline_new) { 9125913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (FLAG_debug_code) { 9135913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // Trash the registers to simulate an allocation failure. 9145913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(result, Operand(0x7091)); 9155913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch1, Operand(0x7191)); 9165913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch2, Operand(0x7291)); 9175913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 9185913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck jmp(gc_required); 9195913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck return; 9205913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 9215913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 92525f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen // Make object size into bytes. 92625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 92725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen object_size *= kPointerSize; 92825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 92925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen ASSERT_EQ(0, object_size & kObjectAlignmentMask); 93025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load address of new object into result and allocation top address into 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // scratch1. 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(new_space_allocation_top)); 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, MemOperand(scratch1)); 938d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else if (FLAG_debug_code) { 939a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assert that result actually contains top on entry. scratch2 is used 940a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // immediately below so this use of scratch2 does not cause difference with 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // respect to register content between debug and release mode. 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch1)); 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, scratch2); 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "Unexpected allocation top"); 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to calculate the new top. 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_limit = 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_limit_address(); 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(new_space_allocation_limit)); 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch2)); 95325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen add(result, result, Operand(object_size)); 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, Operand(scratch2)); 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(result, MemOperand(scratch1)); 957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Tag and adjust back to start of new object. 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 96025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size - kHeapObjectTag)); 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 96225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size)); 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::AllocateInNewSpace(Register object_size, 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch2, 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* gc_required, 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block AllocationFlags flags) { 9735913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!FLAG_inline_new) { 9745913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (FLAG_debug_code) { 9755913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // Trash the registers to simulate an allocation failure. 9765913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(result, Operand(0x7091)); 9775913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch1, Operand(0x7191)); 9785913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck mov(scratch2, Operand(0x7291)); 9795913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 9805913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck jmp(gc_required); 9815913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck return; 9825913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 9835913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 984a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!result.is(scratch1)); 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!scratch1.is(scratch2)); 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load address of new object into result and allocation top address into 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // scratch1. 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(new_space_allocation_top)); 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & RESULT_CONTAINS_TOP) == 0) { 993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, MemOperand(scratch1)); 994d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else if (FLAG_debug_code) { 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assert that result actually contains top on entry. scratch2 is used 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // immediately below so this use of scratch2 does not cause difference with 997a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // respect to register content between debug and release mode. 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch1)); 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, scratch2); 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(eq, "Unexpected allocation top"); 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calculate new top and bail out if new space is exhausted. Use result 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to calculate the new top. Object size is in words so a shift is required to 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // get the number of bytes 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_limit = 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_limit_address(); 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(new_space_allocation_limit)); 1009a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch2, MemOperand(scratch2)); 101025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 101125f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen add(result, result, Operand(object_size, LSL, kPointerSizeLog2)); 101225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } else { 101325f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen add(result, result, Operand(object_size)); 101425f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, Operand(scratch2)); 1016a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(hi, gc_required); 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1018d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Update allocation top. result temporarily holds the new top. 1019d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (FLAG_debug_code) { 1020d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block tst(result, Operand(kObjectAlignmentMask)); 1021d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Check(eq, "Unaligned allocation in new space"); 1022d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(result, MemOperand(scratch1)); 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adjust back to start of new object. 102625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen if ((flags & SIZE_IN_WORDS) != 0) { 102725f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size, LSL, kPointerSizeLog2)); 102825f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } else { 102925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen sub(result, result, Operand(object_size)); 103025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Tag object if requested. 1033a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((flags & TAG_OBJECT) != 0) { 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(result, result, Operand(kHeapObjectTag)); 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::UndoAllocationInNewSpace(Register object, 1040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch) { 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference new_space_allocation_top = 1042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference::new_space_allocation_top_address(); 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure the object has no tag before resetting top. 1045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block and_(object, object, Operand(~kHeapObjectTagMask)); 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the object un-allocated is below the current top. 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch, MemOperand(scratch)); 1050a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(object, scratch); 1051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(lt, "Undo allocation of non allocated memory"); 1052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1053a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Write the address of the object to un-allocate as the current top. 1054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch, Operand(new_space_allocation_top)); 1055a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(object, MemOperand(scratch)); 1056a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1057a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1058a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 10593100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteString(Register result, 10603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 10613100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 10623100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 10633100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 10643100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 10653100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 10663100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 10673100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); 10683100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(scratch1, Operand(length, LSL, 1)); // Length in bytes, not chars. 10693100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, scratch1, 10703100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqTwoByteString::kHeaderSize)); 107125f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 10723100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 10733100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate two-byte string in new space. 10743100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 10753100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 10763100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 10773100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 10783100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 10793100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 10803100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 10813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 10826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 10836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 10846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kStringMapRootIndex, 10856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 10866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 10873100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 10883100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 10893100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 10903100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiString(Register result, 10913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 10923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 10933100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 10943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch3, 10953100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 10963100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Calculate the number of bytes needed for the characters in the string while 10973100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // observing object alignment. 10983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT((SeqAsciiString::kHeaderSize & kObjectAlignmentMask) == 0); 10993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(kCharSize == 1); 11003100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu add(scratch1, length, 11013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Operand(kObjectAlignmentMask + SeqAsciiString::kHeaderSize)); 110225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen and_(scratch1, scratch1, Operand(~kObjectAlignmentMask)); 11033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11043100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Allocate ASCII string in new space. 11053100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu AllocateInNewSpace(scratch1, 11063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 11073100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 11083100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch3, 11093100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 11103100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 11113100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Set the map, length and hash field. 11136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 11146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 11156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kAsciiStringMapRootIndex, 11166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 11176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 11183100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11193100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11203100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11213100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateTwoByteConsString(Register result, 11223100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11233100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 11243100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 11253100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 112625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 11273100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 11283100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 11293100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 11303100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 11313100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 11326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 11336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 11346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 11356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsStringMapRootIndex, 11366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 11376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 11383100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11393100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11403100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11413100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::AllocateAsciiConsString(Register result, 11423100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register length, 11433100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch1, 11443100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch2, 11453100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* gc_required) { 114625f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(ConsString::kSize, 11473100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu result, 11483100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch1, 11493100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu scratch2, 11503100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu gc_required, 11513100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu TAG_OBJECT); 11526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 11536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block InitializeNewString(result, 11546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block length, 11556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Heap::kConsAsciiStringMapRootIndex, 11566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 11576ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2); 11583100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11593100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11616ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CompareObjectType(Register object, 1162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register map, 1163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 11656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(map, FieldMemOperand(object, HeapObject::kMapOffset)); 1166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareInstanceType(map, type_reg, type); 1167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CompareInstanceType(Register map, 1171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register type_reg, 1172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InstanceType type) { 1173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); 1174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(type_reg, Operand(type)); 1175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11783100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::CheckMap(Register obj, 11793100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register scratch, 11803100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Handle<Map> map, 11813100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* fail, 11823100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu bool is_heap_object) { 11833100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (!is_heap_object) { 11843100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu BranchOnSmi(obj, fail); 11853100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 11863100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 11873100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(ip, Operand(map)); 11883100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu cmp(scratch, ip); 11893100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, fail); 11903100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 11913100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11923100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 11937f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid MacroAssembler::CheckMap(Register obj, 11947f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Register scratch, 11957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Heap::RootListIndex index, 11967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Label* fail, 11977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch bool is_heap_object) { 11987f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch if (!is_heap_object) { 11997f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch BranchOnSmi(obj, fail); 12007f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 12017f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ldr(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); 12027f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch LoadRoot(ip, index); 12037f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch cmp(scratch, ip); 12047f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch b(ne, fail); 12057f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 12067f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 12077f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 1208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::TryGetFunctionPrototype(Register function, 1209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register result, 1210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch, 1211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label* miss) { 1212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the receiver isn't a smi. 1213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block BranchOnSmi(function, miss); 1214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the function really is a function. Load map into result reg. 1216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(function, result, scratch, JS_FUNCTION_TYPE); 1217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, miss); 1218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure that the function has an instance prototype. 1220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label non_instance; 1221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldrb(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); 1222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block tst(scratch, Operand(1 << Map::kHasNonInstancePrototype)); 1223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &non_instance); 1224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype or initial map from the function. 1226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, 1227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 1228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the prototype or initial map is the hole, don't return it and 1230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // simply miss the cache instead. This will allow us to allocate a 1231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // prototype object on-demand in the runtime system. 1232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(ip, Heap::kTheHoleValueRootIndex); 1233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block cmp(result, ip); 1234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(eq, miss); 1235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the function does not have an initial map, we're done. 1237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label done; 1238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CompareObjectType(result, scratch, scratch, MAP_TYPE); 1239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(ne, &done); 1240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the prototype from the initial map. 1242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kPrototypeOffset)); 1243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block jmp(&done); 1244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Non-instance prototype: Fetch prototype from constructor field 1246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in initial map. 1247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&non_instance); 1248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(result, FieldMemOperand(result, Map::kConstructorOffset)); 1249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All done. 1251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&done); 1252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallStub(CodeStub* stub, Condition cond) { 1256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(allow_stub_calls()); // stub calls are not allowed in some stubs 1257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Call(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 1258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12613100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::TailCallStub(CodeStub* stub, Condition cond) { 12623100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT(allow_stub_calls()); // stub calls are not allowed in some stubs 12633100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond); 12643100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 12653100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 12663100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IllegalOperation(int num_arguments) { 1268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (num_arguments > 0) { 1269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(sp, sp, Operand(num_arguments * kPointerSize)); 1270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LoadRoot(r0, Heap::kUndefinedValueRootIndex); 1272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 127580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid MacroAssembler::IndexFromHash(Register hash, Register index) { 127680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the hash field contains an array index pick it out. The assert checks 127780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // that the constants for the maximum number of digits for an array index 127880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // cached in the hash field and the number of bits reserved for it does not 127980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // conflict. 128080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < 128180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen (1 << String::kArrayIndexValueBits)); 128280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We want the smi-tagged index in key. kArrayIndexValueMask has zeros in 128380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the low kHashShift bits. 128480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTag == 0); 128580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Ubfx(hash, hash, String::kHashShift, String::kArrayIndexValueBits); 128680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen mov(index, Operand(hash, LSL, kSmiTagSize)); 128780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 128880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 128980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 1290d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::IntegerToDoubleConversionWithVFP3(Register inReg, 1291d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outHighReg, 1292d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Register outLowReg) { 1293d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // ARMv7 VFP3 instructions to implement integer to double conversion. 1294d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block mov(r7, Operand(inReg, ASR, kSmiTagSize)); 1295e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(s15, r7); 12966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block vcvt_f64_s32(d7, s15); 1297e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke vmov(outLowReg, outHighReg, d7); 1298d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1299d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1300d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 13018defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::ObjectToDoubleVFPRegister(Register object, 13028defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister result, 13038defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 13048defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 13058defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 13068defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch3, 13078defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* not_number, 13088defd9ff6930b4e24729971a61cf7469daf119beSteve Block ObjectToDoubleFlags flags) { 13098defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label done; 13108defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & OBJECT_NOT_SMI) == 0) { 13118defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label not_smi; 13128defd9ff6930b4e24729971a61cf7469daf119beSteve Block BranchOnNotSmi(object, ¬_smi); 13138defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Remove smi tag and convert to double. 13148defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(object, ASR, kSmiTagSize)); 13158defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch3, scratch1); 13168defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(result, scratch3); 13178defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(&done); 13188defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(¬_smi); 13198defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 13208defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Check for heap number and load double value from it. 13218defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); 13228defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch2, object, Operand(kHeapObjectTag)); 13238defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, heap_number_map); 13248defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(ne, not_number); 13258defd9ff6930b4e24729971a61cf7469daf119beSteve Block if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { 13268defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If exponent is all ones the number is either a NaN or +/-Infinity. 13278defd9ff6930b4e24729971a61cf7469daf119beSteve Block ldr(scratch1, FieldMemOperand(object, HeapNumber::kExponentOffset)); 13288defd9ff6930b4e24729971a61cf7469daf119beSteve Block Sbfx(scratch1, 13298defd9ff6930b4e24729971a61cf7469daf119beSteve Block scratch1, 13308defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentShift, 13318defd9ff6930b4e24729971a61cf7469daf119beSteve Block HeapNumber::kExponentBits); 13328defd9ff6930b4e24729971a61cf7469daf119beSteve Block // All-one value sign extend to -1. 13338defd9ff6930b4e24729971a61cf7469daf119beSteve Block cmp(scratch1, Operand(-1)); 13348defd9ff6930b4e24729971a61cf7469daf119beSteve Block b(eq, not_number); 13358defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 13368defd9ff6930b4e24729971a61cf7469daf119beSteve Block vldr(result, scratch2, HeapNumber::kValueOffset); 13378defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&done); 13388defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 13398defd9ff6930b4e24729971a61cf7469daf119beSteve Block 13408defd9ff6930b4e24729971a61cf7469daf119beSteve Block 13418defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::SmiToDoubleVFPRegister(Register smi, 13428defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 13438defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 13448defd9ff6930b4e24729971a61cf7469daf119beSteve Block SwVfpRegister scratch2) { 13458defd9ff6930b4e24729971a61cf7469daf119beSteve Block mov(scratch1, Operand(smi, ASR, kSmiTagSize)); 13468defd9ff6930b4e24729971a61cf7469daf119beSteve Block vmov(scratch2, scratch1); 13478defd9ff6930b4e24729971a61cf7469daf119beSteve Block vcvt_f64_s32(value, scratch2); 13488defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 13498defd9ff6930b4e24729971a61cf7469daf119beSteve Block 13508defd9ff6930b4e24729971a61cf7469daf119beSteve Block 13519ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// Tries to get a signed int32 out of a double precision floating point heap 13529ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// number. Rounds towards 0. Branch to 'not_int32' if the double is out of the 13539ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick// 32bits signed integer range. 13549ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrickvoid MacroAssembler::ConvertToInt32(Register source, 13559ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register dest, 13569ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register scratch, 13579ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Register scratch2, 13589ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Label *not_int32) { 13599ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick if (CpuFeatures::IsSupported(VFP3)) { 13609ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick CpuFeatures::Scope scope(VFP3); 13619ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch, source, Operand(kHeapObjectTag)); 13629ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick vldr(d0, scratch, HeapNumber::kValueOffset); 13639ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick vcvt_s32_f64(s0, d0); 13649ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick vmov(dest, s0); 13659ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Signed vcvt instruction will saturate to the minimum (0x80000000) or 13669ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // maximun (0x7fffffff) signed 32bits integer when the double is out of 13679ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // range. When substracting one, the minimum signed integer becomes the 13689ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // maximun signed integer. 13699ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch, dest, Operand(1)); 13709ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch, Operand(LONG_MAX - 1)); 13719ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If equal then dest was LONG_MAX, if greater dest was LONG_MIN. 13729ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(ge, not_int32); 13739ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick } else { 13749ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // This code is faster for doubles that are in the ranges -0x7fffffff to 13759ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // -0x40000000 or 0x40000000 to 0x7fffffff. This corresponds almost to 13769ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // the range of signed int32 values that are not Smis. Jumps to the label 13779ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 'not_int32' if the double isn't in the range -0x80000000.0 to 13789ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 0x80000000.0 (excluding the endpoints). 13799ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Label right_exponent, done; 13809ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get exponent word. 13819ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick ldr(scratch, FieldMemOperand(source, HeapNumber::kExponentOffset)); 13829ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get exponent alone in scratch2. 13839ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick Ubfx(scratch2, 13849ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick scratch, 13859ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick HeapNumber::kExponentShift, 13869ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick HeapNumber::kExponentBits); 13879ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Load dest with zero. We use this either for the final shift or 13889ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // for the answer. 13899ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dest, Operand(0, RelocInfo::NONE)); 13909ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Check whether the exponent matches a 32 bit signed int that is not a Smi. 13919ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // A non-Smi integer is 1.xxx * 2^30 so the exponent is 30 (biased). This is 13929ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // the exponent that we are fastest at and also the highest exponent we can 13939ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // handle here. 13949ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const uint32_t non_smi_exponent = HeapNumber::kExponentBias + 30; 13959ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // The non_smi_exponent, 0x41d, is too big for ARM's immediate field so we 13969ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // split it up to avoid a constant pool entry. You can't do that in general 13979ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // for cmp because of the overflow flag, but we know the exponent is in the 13989ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // range 0-2047 so there is no overflow. 13999ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick int fudge_factor = 0x400; 14009ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch2, scratch2, Operand(fudge_factor)); 14019ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick cmp(scratch2, Operand(non_smi_exponent - fudge_factor)); 14029ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If we have a match of the int32-but-not-Smi exponent then skip some 14039ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // logic. 14049ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(eq, &right_exponent); 14059ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // If the exponent is higher than that then go to slow case. This catches 14069ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // numbers that don't fit in a signed int32, infinities and NaNs. 14079ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(gt, not_int32); 14089ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 14099ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // We know the exponent is smaller than 30 (biased). If it is less than 14109ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // 0 (biased) then the number is smaller in magnitude than 1.0 * 2^0, ie 14119ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // it rounds to zero. 14129ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const uint32_t zero_exponent = HeapNumber::kExponentBias + 0; 14139ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick sub(scratch2, scratch2, Operand(zero_exponent - fudge_factor), SetCC); 14149ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Dest already has a Smi zero. 14159ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick b(lt, &done); 14169ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 14179ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // We have an exponent between 0 and 30 in scratch2. Subtract from 30 to 14189ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // get how much to shift down. 14199ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick rsb(dest, scratch2, Operand(30)); 14209ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 14219ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick bind(&right_exponent); 14229ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get the top bits of the mantissa. 14239ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick and_(scratch2, scratch, Operand(HeapNumber::kMantissaMask)); 14249ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Put back the implicit 1. 14259ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick orr(scratch2, scratch2, Operand(1 << HeapNumber::kExponentShift)); 14269ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Shift up the mantissa bits to take up the space the exponent used to 14279ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // take. We just orred in the implicit bit so that took care of one and 14289ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // we want to leave the sign bit 0 so we subtract 2 bits from the shift 14299ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // distance. 14309ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick const int shift_distance = HeapNumber::kNonMantissaBitsInTopWord - 2; 14319ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(scratch2, Operand(scratch2, LSL, shift_distance)); 14329ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Put sign in zero flag. 14339ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick tst(scratch, Operand(HeapNumber::kSignMask)); 14349ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Get the second half of the double. For some exponents we don't 14359ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // actually need this because the bits get shifted out again, but 14369ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // it's probably slower to test than just to do it. 14379ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick ldr(scratch, FieldMemOperand(source, HeapNumber::kMantissaOffset)); 14389ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Shift down 22 bits to get the last 10 bits. 14399ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick orr(scratch, scratch2, Operand(scratch, LSR, 32 - shift_distance)); 14409ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Move down according to the exponent. 14419ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(dest, Operand(scratch, LSR, dest)); 14429ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick // Fix sign if sign bit was set. 14439ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick rsb(dest, dest, Operand(0, RelocInfo::NONE), LeaveCC, ne); 14449ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick bind(&done); 14459ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick } 14469ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick} 14479ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 14489ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick 14493100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::GetLeastBitsFromSmi(Register dst, 14503100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register src, 14513100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu int num_least_bits) { 14523100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (CpuFeatures::IsSupported(ARMv7)) { 14537f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ubfx(dst, src, kSmiTagSize, num_least_bits); 14543100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } else { 14553100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu mov(dst, Operand(src, ASR, kSmiTagSize)); 14563100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu and_(dst, dst, Operand((1 << num_least_bits) - 1)); 14573100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu } 14583100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 14593100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 14603100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1461a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::Function* f, int num_arguments) { 1462a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All parameters are on the stack. r0 has the return value after call. 1463a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1464a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the expected number of arguments of the runtime function is 1465a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // constant, we check that the actual number of arguments match the 1466a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // expectation. 1467a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (f->nargs >= 0 && f->nargs != num_arguments) { 1468a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block IllegalOperation(num_arguments); 1469a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 1470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1471a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 14724515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // TODO(1236192): Most runtime routines don't need the number of 14734515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // arguments passed in because it is constant. At some point we 14744515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // should remove this need and make the runtime routine entry code 14754515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke // smarter. 14764515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r0, Operand(num_arguments)); 14774515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke mov(r1, Operand(ExternalReference(f))); 14784515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke CEntryStub stub(1); 1479a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallStub(&stub); 1480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1482a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1483a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::CallRuntime(Runtime::FunctionId fid, int num_arguments) { 1484a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::FunctionForId(fid), num_arguments); 1485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1487a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1488402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuvoid MacroAssembler::CallExternalReference(const ExternalReference& ext, 1489402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu int num_arguments) { 1490402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r0, Operand(num_arguments)); 1491402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu mov(r1, Operand(ext)); 1492402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1493402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CEntryStub stub(1); 1494402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu CallStub(&stub); 1495402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu} 1496402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1497402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 14986ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallExternalReference(const ExternalReference& ext, 14996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 15006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 1501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // TODO(1236192): Most runtime routines don't need the number of 1502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // arguments passed in because it is constant. At some point we 1503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // should remove this need and make the runtime routine entry code 1504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // smarter. 1505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(num_arguments)); 15066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpToExternalReference(ext); 1507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 15106ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, 15116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments, 15126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int result_size) { 15136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TailCallExternalReference(ExternalReference(fid), num_arguments, result_size); 15146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 15156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 15166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 15176ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpToExternalReference(const ExternalReference& builtin) { 1518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#if defined(__thumb__) 1519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Thumb mode builtin. 1520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT((reinterpret_cast<intptr_t>(builtin.address()) & 1) == 1); 1521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r1, Operand(builtin)); 1523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CEntryStub stub(1); 1524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Jump(stub.GetCode(), RelocInfo::CODE_TARGET); 1525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, 1529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block InvokeJSFlags flags) { 1530402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu GetBuiltinEntry(r2, id); 1531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (flags == CALL_JS) { 1532402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Call(r2); 1533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(flags == JUMP_JS); 1535402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu Jump(r2); 1536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1540791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinFunction(Register target, 1541791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block Builtins::JavaScript id) { 15426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the builtins object into target register. 15436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 15446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); 1545402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // Load the JavaScript builtin function from the builtins object. 1546791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(target, 15476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JSBuiltinsObject::OffsetOfFunctionWithId(id))); 1548791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block} 1549791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block 15506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1551791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Blockvoid MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { 1552791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ASSERT(!target.is(r1)); 1553791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block GetBuiltinFunction(r1, id); 15546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Load the code entry point from the builtins object. 1555791712a13f1814dd3ab5d1a5ab8ff5dbc476f6d6Steve Block ldr(target, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 1556a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1557a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1558a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1559a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::SetCounter(StatsCounter* counter, int value, 1560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch1, Operand(value)); 1563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1564a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1566a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1567a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::IncrementCounter(StatsCounter* counter, int value, 1570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 1572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1573a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1574a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 1575a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block add(scratch1, scratch1, Operand(value)); 1576a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1577a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1578a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1579a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::DecrementCounter(StatsCounter* counter, int value, 1582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register scratch1, Register scratch2) { 1583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(value > 0); 1584a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_native_code_counters && counter->Enabled()) { 1585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(scratch2, Operand(ExternalReference(counter))); 1586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ldr(scratch1, MemOperand(scratch2)); 1587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sub(scratch1, scratch1, Operand(value)); 1588a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block str(scratch1, MemOperand(scratch2)); 1589a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1590a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1591a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1592a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Assert(Condition cc, const char* msg) { 1594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_debug_code) 1595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Check(cc, msg); 1596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1597a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 15999dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsenvoid MacroAssembler::AssertRegisterIsRoot(Register reg, 16009dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Heap::RootListIndex index) { 16019dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen if (FLAG_debug_code) { 16029dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen LoadRoot(ip, index); 16039dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen cmp(reg, ip); 16049dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Check(eq, "Register did not match expected root"); 16059dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } 16069dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 16079dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 16089dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 1609756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AssertFastElements(Register elements) { 1610756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick if (FLAG_debug_code) { 1611756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT(!elements.is(ip)); 1612756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Label ok; 1613756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick push(elements); 1614756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ldr(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); 1615756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedArrayMapRootIndex); 1616756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 1617756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 1618756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex); 1619756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick cmp(elements, ip); 1620756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick b(eq, &ok); 1621756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Abort("JSObject with fast elements map has slow elements"); 1622756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick bind(&ok); 1623756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick pop(elements); 1624756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick } 1625756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 1626756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1627756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Check(Condition cc, const char* msg) { 1629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Label L; 1630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block b(cc, &L); 1631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Abort(msg); 1632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 1633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bind(&L); 1634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1636a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid MacroAssembler::Abort(const char* msg) { 16388defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label abort_start; 16398defd9ff6930b4e24729971a61cf7469daf119beSteve Block bind(&abort_start); 1640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We want to pass the msg string like a smi to avoid GC 1641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // problems, however msg is not guaranteed to be aligned 1642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // properly. Instead, we pass an aligned pointer that is 1643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a proper v8 smi, but also pass the alignment difference 1644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // from the real pointer as a smi. 1645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p1 = reinterpret_cast<intptr_t>(msg); 1646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; 1647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); 1648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (msg != NULL) { 1650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment("Abort message: "); 1651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RecordComment(msg); 1652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1654d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Disable stub call restrictions to always allow calls to abort. 1655d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block set_allow_stub_calls(true); 1656d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(p0)); 1658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 1659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block mov(r0, Operand(Smi::FromInt(p1 - p0))); 1660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block push(r0); 1661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CallRuntime(Runtime::kAbort, 2); 1662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // will not return here 16638defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (is_const_pool_blocked()) { 16648defd9ff6930b4e24729971a61cf7469daf119beSteve Block // If the calling code cares about the exact number of 16658defd9ff6930b4e24729971a61cf7469daf119beSteve Block // instructions generated, we insert padding here to keep the size 16668defd9ff6930b4e24729971a61cf7469daf119beSteve Block // of the Abort macro constant. 16678defd9ff6930b4e24729971a61cf7469daf119beSteve Block static const int kExpectedAbortInstructions = 10; 16688defd9ff6930b4e24729971a61cf7469daf119beSteve Block int abort_instructions = InstructionsGeneratedSince(&abort_start); 16698defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(abort_instructions <= kExpectedAbortInstructions); 16708defd9ff6930b4e24729971a61cf7469daf119beSteve Block while (abort_instructions++ < kExpectedAbortInstructions) { 16718defd9ff6930b4e24729971a61cf7469daf119beSteve Block nop(); 16728defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 16738defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 1674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1677d0582a6c46733687d045e4188a1bcd0123c758a1Steve Blockvoid MacroAssembler::LoadContext(Register dst, int context_chain_length) { 1678d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (context_chain_length > 0) { 1679d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Move up the chain of contexts to the context containing the slot. 1680d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::CLOSURE_INDEX))); 1681d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Load the function context (which is the incoming, outer context). 1682d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 1683d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block for (int i = 1; i < context_chain_length; i++) { 1684d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); 1685d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, FieldMemOperand(dst, JSFunction::kContextOffset)); 1686d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1687d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The context may be an intermediate context, not a function context. 1688d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); 1689d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else { // Slot is in the current function context. 1690d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The context may be an intermediate context, not a function context. 1691d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ldr(dst, MemOperand(cp, Context::SlotOffset(Context::FCONTEXT_INDEX))); 1692d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1693d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block} 1694d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 1695d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 16963100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfNotBothSmi(Register reg1, 16973100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 16983100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_not_both_smi) { 16993100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT_EQ(0, kSmiTag); 17003100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 17013100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), eq); 17023100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(ne, on_not_both_smi); 17033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 17043100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 17053100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 17063100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescuvoid MacroAssembler::JumpIfEitherSmi(Register reg1, 17073100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Register reg2, 17083100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu Label* on_either_smi) { 17093100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu ASSERT_EQ(0, kSmiTag); 17103100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg1, Operand(kSmiTagMask)); 17113100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu tst(reg2, Operand(kSmiTagMask), ne); 17123100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu b(eq, on_either_smi); 17133100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu} 17143100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 17153100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu 1716756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickvoid MacroAssembler::AbortIfSmi(Register object) { 1717756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ASSERT_EQ(0, kSmiTag); 1718756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick tst(object, Operand(kSmiTagMask)); 1719756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick Assert(ne, "Operand is a smi"); 1720756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick} 1721756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1722756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 1723d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNonSmisNotBothSequentialAsciiStrings( 1724d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register first, 1725d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 1726d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 1727d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 1728d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 1729d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Test that both first and second are sequential ASCII strings. 1730d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Assume that they are non-smis. 1731d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); 1732d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldr(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); 1733d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); 1734d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ldrb(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); 17356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block JumpIfBothInstanceTypesAreNotSequentialAscii(scratch1, 17376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 17386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 17396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 17406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block failure); 1741d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 1742d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 1743d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarkevoid MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first, 1744d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register second, 1745d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch1, 1746d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Register scratch2, 1747d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke Label* failure) { 1748d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Check that neither is a smi. 1749d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke ASSERT_EQ(0, kSmiTag); 1750d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke and_(scratch1, first, Operand(second)); 1751d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke tst(scratch1, Operand(kSmiTagMask)); 1752d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke b(eq, failure); 1753d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke JumpIfNonSmisNotBothSequentialAsciiStrings(first, 1754d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke second, 1755d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch1, 1756d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke scratch2, 1757d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke failure); 1758d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke} 1759d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 1760d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 17616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// Allocates a heap number or jumps to the need_gc label if the young space 17626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block// is full and a scavenge is needed. 17636ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::AllocateHeapNumber(Register result, 17646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 17656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 17669dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen Register heap_number_map, 17676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* gc_required) { 17686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Allocate an object in the heap for the heap number and tag it as a heap 17696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // object. 177025f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen AllocateInNewSpace(HeapNumber::kSize, 17716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block result, 17726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch1, 17736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block scratch2, 17746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block gc_required, 17756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block TAG_OBJECT); 17766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17779dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Store heap number map in the allocated object. 17789dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); 17799dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen str(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); 17806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 17816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 17838defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::AllocateHeapNumberWithValue(Register result, 17848defd9ff6930b4e24729971a61cf7469daf119beSteve Block DwVfpRegister value, 17858defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch1, 17868defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch2, 17878defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register heap_number_map, 17888defd9ff6930b4e24729971a61cf7469daf119beSteve Block Label* gc_required) { 17898defd9ff6930b4e24729971a61cf7469daf119beSteve Block AllocateHeapNumber(result, scratch1, scratch2, heap_number_map, gc_required); 17908defd9ff6930b4e24729971a61cf7469daf119beSteve Block sub(scratch1, result, Operand(kHeapObjectTag)); 17918defd9ff6930b4e24729971a61cf7469daf119beSteve Block vstr(value, scratch1, HeapNumber::kValueOffset); 17928defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 17938defd9ff6930b4e24729971a61cf7469daf119beSteve Block 17948defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1795bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch// Copies a fixed number of fields of heap objects from src to dst. 1796bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdochvoid MacroAssembler::CopyFields(Register dst, 1797bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register src, 1798bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch RegList temps, 1799bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch int field_count) { 1800bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // At least one bit set in the first 15 registers. 1801bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & ((1 << 15) - 1)) != 0); 1802bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & dst.bit()) == 0); 1803bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT((temps & src.bit()) == 0); 1804bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Primitive implementation using only one temporary register. 1805bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1806bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch Register tmp = no_reg; 1807bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch // Find a temp register in temps list. 1808bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < 15; i++) { 1809bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch if ((temps & (1 << i)) != 0) { 1810bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch tmp.set_code(i); 1811bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch break; 1812bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1813bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1814bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ASSERT(!tmp.is(no_reg)); 1815bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1816bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch for (int i = 0; i < field_count; i++) { 1817bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch ldr(tmp, FieldMemOperand(src, i * kPointerSize)); 1818bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch str(tmp, FieldMemOperand(dst, i * kPointerSize)); 1819bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 1820bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch} 1821bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 1822bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 18238defd9ff6930b4e24729971a61cf7469daf119beSteve Blockvoid MacroAssembler::CountLeadingZeros(Register zeros, // Answer. 18248defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register source, // Input. 18258defd9ff6930b4e24729971a61cf7469daf119beSteve Block Register scratch) { 18268defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(source) || !source.is(zeros)); 18278defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(scratch)); 18288defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!scratch.is(ip)); 18298defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!source.is(ip)); 18308defd9ff6930b4e24729971a61cf7469daf119beSteve Block ASSERT(!zeros.is(ip)); 18316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#ifdef CAN_USE_ARMV5_INSTRUCTIONS 18326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block clz(zeros, source); // This instruction is only supported after ARM5. 18336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#else 18349ac36c9faca11611ada13b4054edbaa0738661d0Iain Merrick mov(zeros, Operand(0, RelocInfo::NONE)); 18358defd9ff6930b4e24729971a61cf7469daf119beSteve Block Move(scratch, source); 18366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 16. 18376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xffff0000)); 18386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(16), LeaveCC, eq); 18396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 16), LeaveCC, eq); 18406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 8. 18416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xff000000)); 18426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(8), LeaveCC, eq); 18436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 8), LeaveCC, eq); 18446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 4. 18456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xf0000000)); 18466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(4), LeaveCC, eq); 18476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 4), LeaveCC, eq); 18486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top 2. 18496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0xc0000000)); 18506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(2), LeaveCC, eq); 18516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, Operand(scratch, LSL, 2), LeaveCC, eq); 18526ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Top bit. 18536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(scratch, Operand(0x80000000u)); 18546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(zeros, zeros, Operand(1), LeaveCC, eq); 18556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 18566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18576ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18596ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialAscii( 18606ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register first, 18616ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register second, 18626ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch1, 18636ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch2, 18646ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 18656ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 18666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 18676ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 18686ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch1, first, Operand(kFlatAsciiStringMask)); 18696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch2, second, Operand(kFlatAsciiStringMask)); 18706ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch1, Operand(kFlatAsciiStringTag)); 18716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Ignore second test if first test failed. 18726ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch2, Operand(kFlatAsciiStringTag), eq); 18736ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 18746ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18756ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18776ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(Register type, 18786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Register scratch, 18796ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label* failure) { 18806ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringMask = 18816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; 18826ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int kFlatAsciiStringTag = ASCII_STRING_TYPE; 18836ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(scratch, type, Operand(kFlatAsciiStringMask)); 18846ded16be15dd865a9b21ea304d5273c8be299c87Steve Block cmp(scratch, Operand(kFlatAsciiStringTag)); 18856ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(ne, failure); 18866ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 18876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 18896ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) { 18906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = ActivationFrameAlignment(); 18916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Up to four simple arguments are passed in registers r0..r3. 18926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4; 18936ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 18946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make stack end at alignment and make room for num_arguments - 4 words 18956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // and the original value of sp. 18966ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(scratch, sp); 18976ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); 18986ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 18996ded16be15dd865a9b21ea304d5273c8be299c87Steve Block and_(sp, sp, Operand(-frame_alignment)); 19006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block str(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); 19016ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 19026ded16be15dd865a9b21ea304d5273c8be299c87Steve Block sub(sp, sp, Operand(stack_passed_arguments * kPointerSize)); 19036ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 19046ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 19056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19076ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(ExternalReference function, 19086ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int num_arguments) { 19096ded16be15dd865a9b21ea304d5273c8be299c87Steve Block mov(ip, Operand(function)); 19106ded16be15dd865a9b21ea304d5273c8be299c87Steve Block CallCFunction(ip, num_arguments); 19116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 19126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19146ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid MacroAssembler::CallCFunction(Register function, int num_arguments) { 19156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Make sure that the stack is aligned before calling a C function unless 19166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // running in the simulator. The simulator has its own alignment check which 19176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // provides more information. 19186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#if defined(V8_HOST_ARCH_ARM) 19196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_debug_code) { 19206ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment = OS::ActivationFrameAlignment(); 19216ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int frame_alignment_mask = frame_alignment - 1; 19226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (frame_alignment > kPointerSize) { 19236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(IsPowerOf2(frame_alignment)); 19246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Label alignment_as_expected; 19256ded16be15dd865a9b21ea304d5273c8be299c87Steve Block tst(sp, Operand(frame_alignment_mask)); 19266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block b(eq, &alignment_as_expected); 19276ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Don't use Check here, as it will call Runtime_Abort possibly 19286ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // re-entering here. 19296ded16be15dd865a9b21ea304d5273c8be299c87Steve Block stop("Unexpected alignment"); 19306ded16be15dd865a9b21ea304d5273c8be299c87Steve Block bind(&alignment_as_expected); 19316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 19326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 19336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 19346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19356ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Just call directly. The function called cannot cause a GC, or 19366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // allow preemption, so the return address in the link register 19376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // stays correct. 19386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Call(function); 19396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4; 19406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (OS::ActivationFrameAlignment() > kPointerSize) { 19416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ldr(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); 19426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else { 19436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block add(sp, sp, Operand(stack_passed_arguments * sizeof(kPointerSize))); 19446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 19456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 19466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 19476ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 1949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::CodePatcher(byte* address, int instructions) 1950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : address_(address), 1951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block instructions_(instructions), 1952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block size_(instructions * Assembler::kInstrSize), 1953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm_(address, size_ + Assembler::kGap) { 1954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create a new macro assembler pointing to the address of the code to patch. 1955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The size is adjusted with kGap on order for the assembler to generate size 1956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bytes of instructions without failing with buffer size constraints. 1957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 1958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1960a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockCodePatcher::~CodePatcher() { 1962a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Indicate that code has changed. 1963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CPU::FlushICache(address_, size_); 1964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check that the code was patched as expected. 1966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.pc_ == address_ + size_); 1967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 1968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Instr x) { 1972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(x); 1973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid CodePatcher::Emit(Address addr) { 1977a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block masm()->emit(reinterpret_cast<Instr>(addr)); 1978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // ENABLE_DEBUGGER_SUPPORT 1980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1981a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1982a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 1983f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 1984f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#endif // V8_TARGET_ARCH_ARM 1985