assembler-x64.h revision 3ce2e2076e8e3e60cf1810eec160ea2d8557e9e7
1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright (c) 1994-2006 Sun Microsystems Inc. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// All Rights Reserved. 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// - Redistributions of source code must retain the above copyright notice, 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// this list of conditions and the following disclaimer. 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// - Redistribution in binary form must reproduce the above copyright 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer in the 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// documentation and/or other materials provided with the distribution. 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// - Neither the name of Sun Microsystems or the names of contributors may 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// be used to endorse or promote products derived from this software without 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// specific prior written permission. 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The original source code covered by the above license above has been 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modified significantly by Google Inc. 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2006-2009 the V8 project authors. All rights reserved. 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A lightweight X64 Assembler. 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifndef V8_X64_ASSEMBLER_X64_H_ 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define V8_X64_ASSEMBLER_X64_H_ 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Utility functions 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Test whether a 64-bit value is in a specific range. 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool is_uint32(int64_t x) { 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int64_t kUInt32Mask = V8_INT64_C(0xffffffff); 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return x == (x & kUInt32Mask); 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool is_int32(int64_t x) { 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int64_t kMinIntValue = V8_INT64_C(-0x80000000); 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return is_uint32(x - kMinIntValue); 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool uint_is_int32(uint64_t x) { 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const uint64_t kMaxIntValue = V8_UINT64_C(0x80000000); 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return x < kMaxIntValue; 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool is_uint32(uint64_t x) { 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const uint64_t kMaxUIntValue = V8_UINT64_C(0x100000000); 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return x < kMaxUIntValue; 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CPU Registers. 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 1) We would prefer to use an enum, but enum values are assignment- 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// compatible with int, which has caused code-generation bugs. 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 2) We would prefer to use a class instead of a struct but we don't like 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the register initialization to depend on the particular initialization 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// order (which appears to be different on OS X, Linux, and Windows for the 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// installed versions of C++ we tried). Using a struct permits C-style 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "initialization". Also, the Register objects cannot be const as this 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// forces initialization stubs in MSVC, making us dependent on initialization 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// order. 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 3) By not using an enum, we are possibly preventing the compiler from 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// doing certain constant folds, which may significantly reduce the 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// code generated for some assembly instructions (because they boil down 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// to a few constants). If this is a problem, we could change the code 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// such that we use an enum in optimized mode, and the struct in debug 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// mode. This way we get the compile-time error checking in debug mode 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// and best performance in optimized code. 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct Register { 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static Register toRegister(int code) { 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register r = { code }; 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return r; 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_valid() const { return 0 <= code_ && code_ < 16; } 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is(Register reg) const { return code_ == reg.code_; } 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code() const { 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int bit() const { 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return 1 << code_; 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the high bit of the register code as a 0 or 1. Used often 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // when constructing the REX prefix byte. 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int high_bit() const { 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ >> 3; 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the 3 low bits of the register code. Used when encoding registers 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in modR/M, SIB, and opcode bytes. 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int low_bits() const { 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ & 0x7; 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (unfortunately we can't make this private in a struct when initializing 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // by assignment.) 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rax; 120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rcx; 121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rdx; 122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rbx; 123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rsp; 124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rbp; 125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rsi; 126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register rdi; 127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r8; 128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r9; 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r10; 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r11; 131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r12; 132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r13; 133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r14; 134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register r15; 135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern Register no_reg; 136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct MMXRegister { 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_valid() const { return 0 <= code_ && code_ < 2; } 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code() const { 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm0; 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm1; 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm2; 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm3; 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm4; 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm5; 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm6; 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm7; 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm8; 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm9; 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm10; 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm11; 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm12; 161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm13; 162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm14; 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern MMXRegister mm15; 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct XMMRegister { 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_valid() const { return 0 <= code_ && code_ < 16; } 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code() const { 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the high bit of the register code as a 0 or 1. Used often 174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // when constructing the REX prefix byte. 175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int high_bit() const { 176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ >> 3; 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the 3 low bits of the register code. Used when encoding registers 179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in modR/M, SIB, and opcode bytes. 180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int low_bits() const { 181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ & 0x7; 182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm0; 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm1; 189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm2; 190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm3; 191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm4; 192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm5; 193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm6; 194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm7; 195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm8; 196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm9; 197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm10; 198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm11; 199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm12; 200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm13; 201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm14; 202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockextern XMMRegister xmm15; 203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Condition { 205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // any value < 0 is considered no_condition 206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_condition = -1, 207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block overflow = 0, 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_overflow = 1, 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block below = 2, 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block above_equal = 3, 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block equal = 4, 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_equal = 5, 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block below_equal = 6, 215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block above = 7, 216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block negative = 8, 217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block positive = 9, 218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block parity_even = 10, 219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block parity_odd = 11, 220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block less = 12, 221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block greater_equal = 13, 222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block less_equal = 14, 223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block greater = 15, 224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2253ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Fake conditions that are handled by the 2263ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // opcodes using them. 2273ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block always = 16, 2283ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block never = 17, 229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // aliases 230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block carry = below, 231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_carry = above_equal, 232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block zero = equal, 233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_zero = not_equal, 234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sign = negative, 2353ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block not_sign = positive, 2363ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block last_condition = greater 237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Returns the equivalent of !cc. 241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Negation of the default no_condition (-1) results in a non-default 242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// no_condition value (-2). As long as tests for no_condition check 243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// for condition < 0, this will work as expected. 244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition NegateCondition(Condition cc); 245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Corresponds to transposing the operands of a comparison. 247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition ReverseCondition(Condition cc) { 248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (cc) { 249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below: 250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above; 251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above: 252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below; 253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above_equal: 254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below_equal; 255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below_equal: 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above_equal; 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less: 258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater; 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater: 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less; 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater_equal: 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less_equal; 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less_equal: 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater_equal; 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block default: 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return cc; 267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Hint { 271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_hint = 0, 272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_taken = 0x2e, 273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block taken = 0x3e 274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The result of negating a hint is as if the corresponding condition 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// were negated by NegateCondition. That is, no_hint is mapped to 278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// itself and not_taken and taken are mapped to each other. 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Hint NegateHint(Hint hint) { 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (hint == no_hint) 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ? no_hint 282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : ((hint == not_taken) ? taken : not_taken); 283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Immediates 288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Immediate BASE_EMBEDDED { 290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Immediate(int32_t value) : value_(value) {} 292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t value_; 295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Operands 302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum ScaleFactor { 304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_1 = 0, 305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_2 = 1, 306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_4 = 2, 307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_8 = 3, 308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_int_size = times_4, 309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_half_pointer_size = times_4, 310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_pointer_size = times_8 311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Operand BASE_EMBEDDED { 315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + disp/r] 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register base, int32_t disp); 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + index*scale + disp/r] 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register base, 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register index, 322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp); 324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [index*scale + disp/r] 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register index, 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp); 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte rex_; 332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte buf_[10]; 333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The number of bytes in buf_. 334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block unsigned int len_; 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode_; 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the ModR/M byte without an encoded 'reg' register. The 338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is encoded later as part of the emit_operand operation. 339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // set_modrm can be called before or after set_sib and set_disp*. 340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_modrm(int mod, Register rm); 341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the SIB byte if one is needed. Sets the length to 2 rather than 1. 343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_sib(ScaleFactor scale, Register index, Register base); 344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adds operand displacement fields (offsets added to the memory address). 346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Needs to be called after set_sib, not before it. 347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp8(int disp); 348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp32(int disp); 349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures keeps track of which features are supported by the target CPU. 355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Supported features must be enabled by a Scope before use. 356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Example: 357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// if (CpuFeatures::IsSupported(SSE3)) { 358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures::Scope fscope(SSE3); 359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate SSE3 floating point code. 360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } else { 361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate standard x87 or SSE2 floating point code. 362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } 363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass CpuFeatures : public AllStatic { 364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Feature flags bit positions. They are mostly based on the CPUID spec. 366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (We assign CPUID itself to one of the currently reserved bits -- 367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // feel free to change this if needed.) 368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block enum Feature { SSE3 = 32, 369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SSE2 = 26, 370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CMOV = 15, 371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RDTSC = 4, 372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CPUID = 10, 373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SAHF = 0}; 374a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Detect features of the target CPU. Set safe defaults if the serializer 375a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is enabled (snapshots must be portable). 376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static void Probe(); 377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is supported by the target CPU. 378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsSupported(Feature f) { 3793ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SSE2 && !FLAG_enable_sse2) return false; 3803ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SSE3 && !FLAG_enable_sse3) return false; 3813ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == CMOV && !FLAG_enable_cmov) return false; 3823ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == RDTSC && !FLAG_enable_rdtsc) return false; 3833ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SAHF && !FLAG_enable_sahf) return false; 384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (supported_ & (V8_UINT64_C(1) << f)) != 0; 385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is currently enabled. 387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsEnabled(Feature f) { 388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (enabled_ & (V8_UINT64_C(1) << f)) != 0; 389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Enable a specified feature within a scope. 391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block class Scope BASE_EMBEDDED { 392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Scope(Feature f) { 395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(CpuFeatures::IsSupported(f)); 396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block old_enabled_ = CpuFeatures::enabled_; 397a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CpuFeatures::enabled_ |= (V8_UINT64_C(1) << f); 398a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 399a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Scope() { CpuFeatures::enabled_ = old_enabled_; } 400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint64_t old_enabled_; 402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Scope(Feature f) {} 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 408a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Safe defaults include SSE2 and CMOV for X64. It is always available, if 409a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // anyone checks, but they shouldn't need to check. 410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const uint64_t kDefaultCpuFeatures = 411a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block (1 << CpuFeatures::SSE2 | 1 << CpuFeatures::CMOV); 412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static uint64_t supported_; 413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static uint64_t enabled_; 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Assembler : public Malloced { 418a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We check before assembling an instruction that there is sufficient 420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // space to write an instruction and its relocation information. 421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The relocation writer's position must be kGap bytes above the end of 422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the generated instructions. This leaves enough space for the 423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // longest possible x64 instruction, 15 bytes, and the longest possible 424a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information encoding, RelocInfoWriter::kMaxLength == 16. 425a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (There is a 15 byte limit on x64 instruction length that rules out some 426a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // otherwise valid instructions.) 427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This allows for a single, fast space check per instruction. 428a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kGap = 32; 429a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 430a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 431a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create an assembler. Instructions and relocation information are emitted 432a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // into a buffer, with the instructions starting from the beginning and the 433a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information starting from the end of the buffer. See CodeDesc 434a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for a detailed comment on the layout (globals.h). 435a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is NULL, the assembler allocates and grows its own 437a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // buffer, and buffer_size determines the initial buffer size. The buffer is 438a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // owned by the assembler and deallocated upon destruction of the assembler. 439a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 440a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is not NULL, the assembler uses the provided buffer 441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for code generation and assumes its size to be buffer_size. If the buffer 442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is too small, a fatal error occurs. No deallocation of the buffer is done 443a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // upon destruction of the assembler. 444a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler(void* buffer, int buffer_size); 445a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Assembler(); 446a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // GetCode emits any pending (non-emitted) code and fills the descriptor 448a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // desc. GetCode() is idempotent; it returns the same result if no other 449a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assembler functions are invoked in between GetCode() calls. 450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GetCode(CodeDesc* desc); 451a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4523ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Read/Modify the code target in the relative branch/call instruction at pc. 4533ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // On the x64 architecture, we use relative jumps with a 32-bit displacement 4543ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // to jump to other Code objects in the Code space in the heap. 4553ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Jumps to C functions are done indirectly through a 64-bit register holding 4563ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // the absolute address of the target. 4573ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // These functions convert between absolute Addresses of Code objects and 4583ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // the relative displacements stored in the code. 459a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static inline Address target_address_at(Address pc); 460a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static inline void set_target_address_at(Address pc, Address target); 4613ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block inline Handle<Object> code_target_object_handle_at(Address pc); 462a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Distance between the address of the code target in the call instruction 4633ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // and the return address pushed on the stack. 4643ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block static const int kCallTargetAddressOffset = 4; // Use 32-bit displacement. 4653ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Distance between the start of the JS return sequence and where the 4663ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // 32-bit displacement of a near call would be, relative to the pushed 4673ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // return address. TODO: Use return sequence length instead. 4683ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; 4693ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block static const int kPatchReturnSequenceAddressOffset = 13 - 4; 4703ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // TODO(X64): Rename this, removing the "Real", after changing the above. 4713ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block static const int kRealPatchReturnSequenceAddressOffset = 2; 472a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // --------------------------------------------------------------------------- 473a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code generation 474a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 475a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Function names correspond one-to-one to x64 instruction mnemonics. 476a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Unless specified otherwise, instructions operate on 64-bit operands. 477a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 478a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we need versions of an assembly instruction that operate on different 479a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // width arguments, we add a single-letter suffix specifying the width. 480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This is done for the following instructions: mov, cmp, inc, dec, 481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // add, sub, and test. 482a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // There are no versions of these instructions without the suffix. 483a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 8-bit (byte) operands/registers have a trailing 'b'. 484a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 16-bit (word) operands/registers have a trailing 'w'. 485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 32-bit (doubleword) operands/registers use 'l'. 486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 64-bit (quadword) operands/registers use 'q'. 487a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 488a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Some mnemonics, such as "and", are the same as C++ keywords. 489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Naming conflicts with C++ keywords are resolved by adding a trailing '_'. 490a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 491a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Insert the smallest number of nop instructions 492a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // possible to align the pc offset to a multiple 493a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of m. m must be a power of 2. 494a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Align(int m); 495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Stack 497a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pushfq(); 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void popfq(); 499a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 500a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Immediate value); 501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Register src); 502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(const Operand& src); 503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Label* label, RelocInfo::Mode relocation_mode); 504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(Register dst); 506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(const Operand& dst); 507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void enter(Immediate size); 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void leave(); 510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 511a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves 512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(Register dst, const Operand& src); 513a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(Register dst, Immediate imm); 514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(const Operand& dst, Register src); 515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5163ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Move the low 16 bits of a 64-bit register value to a 16-bit 5173ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // memory location. 5183ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movw(const Operand& dst, Register src); 5193ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, Register src); 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, const Operand& src); 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Register src); 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Immediate imm); 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load a 32-bit immediate value, zero-extended to 64 bits. 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, Immediate imm32); 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move 64 bit register value to 64-bit memory location. 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(const Operand& dst, Register src); 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move 64 bit memory location to 64-bit register value. 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, const Operand& src); 531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Register src); 532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign extends immediate 32-bit value to 64 bits. 533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Immediate x); 534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move the offset of the label location relative to the current 535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // position (after the move) to the destination. 536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Label* src); 537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move sign extended immediate to memory location. 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(const Operand& dst, Immediate value); 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // New x64 instructions to load a 64-bit immediate into a register. 541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All 64-bit immediates must have a relocation mode. 542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, void* ptr, RelocInfo::Mode rmode); 543a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, int64_t value, RelocInfo::Mode rmode); 544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, const char* s, RelocInfo::Mode rmode); 545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves the address of the external reference into the register. 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, ExternalReference ext); 547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode); 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5493ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movsxbq(Register dst, const Operand& src); 5503ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movsxwq(Register dst, const Operand& src); 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsxlq(Register dst, Register src); 552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsxlq(Register dst, const Operand& src); 553a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxbq(Register dst, const Operand& src); 554a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxbl(Register dst, const Operand& src); 5553ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movzxwq(Register dst, const Operand& src); 556a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxwl(Register dst, const Operand& src); 557a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 558a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // New x64 instruction to load from an immediate 64-bit pointer into RAX. 559a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void load_rax(void* ptr, RelocInfo::Mode rmode); 560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void load_rax(ExternalReference ext); 561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional moves. 563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovq(Condition cc, Register dst, Register src); 564a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovq(Condition cc, Register dst, const Operand& src); 565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovl(Condition cc, Register dst, Register src); 566a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovl(Condition cc, Register dst, const Operand& src); 567a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Exchange two registers 569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xchg(Register dst, Register src); 570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Arithmetics 572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, Register src) { 573a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (dst.low_bits() == 4) { // Forces SIB byte. 574a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x01, src, dst); 575a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 576a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x03, dst, src); 577a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 578a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 579a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, Immediate src) { 581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x0, dst, src); 582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 584a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, const Operand& src) { 585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x03, dst, src); 586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 588a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(const Operand& dst, Immediate src) { 589a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x0, dst, src); 590a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 591a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 592a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, Register src) { 593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x03, dst, src); 594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, const Operand& src) { 597a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x03, dst, src); 598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(const Operand& dst, Register src) { 601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x01, src, dst); 602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, Immediate src) { 605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x0, dst, src); 606a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 607a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 608a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(const Operand& dst, Immediate src) { 609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x0, dst, src); 610a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, Immediate src) { 613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x7, dst, src); 614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb_al(Immediate src); 617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, Register src) { 619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3A, dst, src); 620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 621a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 622a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, const Operand& src) { 623a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3A, dst, src); 624a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 625a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 626a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& dst, Register src) { 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x38, src, dst); 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& dst, Immediate src) { 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x7, dst, src); 632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& dst, Immediate src) { 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_16(0x7, dst, src); 636a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 638a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, Immediate src) { 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_16(0x7, dst, src); 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, const Operand& src) { 643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x3B, dst, src); 644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, Register src) { 647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x3B, dst, src); 648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& dst, Register src) { 651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x39, src, dst); 652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 654a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, Register src) { 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x3B, dst, src); 656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, const Operand& src) { 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x3B, dst, src); 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(const Operand& dst, Register src) { 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x39, src, dst); 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, Immediate src) { 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x7, dst, src); 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(const Operand& dst, Immediate src) { 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x7, dst, src); 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, Register src) { 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3B, dst, src); 676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 678a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, const Operand& src) { 679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3B, dst, src); 680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(const Operand& dst, Register src) { 683a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x39, src, dst); 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, Immediate src) { 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x7, dst, src); 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(const Operand& dst, Immediate src) { 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x7, dst, src); 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, Register src) { 695a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x23, dst, src); 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, const Operand& src) { 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x23, dst, src); 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, Register src) { 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x21, src, dst); 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, Immediate src) { 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x4, dst, src); 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, Immediate src) { 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x4, dst, src); 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void andl(Register dst, Immediate src) { 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x4, dst, src); 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7183ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void andl(Register dst, Register src) { 7193ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block arithmetic_op_32(0x23, dst, src); 7203ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 7213ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 7223ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decq(Register dst); 724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decq(const Operand& dst); 725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decl(Register dst); 726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decl(const Operand& dst); 7273ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void decb(Register dst); 7283ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void decb(const Operand& dst); 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign-extends rax into rdx:rax. 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cqo(); 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign-extends eax into edx:eax. 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cdq(); 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Divide rdx:rax by src. Quotient in rax, remainder in rdx. 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idivq(Register src); 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idivl(Register src); 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Signed multiply instructions. 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register src); // rdx:rax = rax * src. 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src); // dst = dst * src. 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, const Operand& src); // dst = dst * src. 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src, Immediate imm); // dst = src * imm. 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Multiply 32 bit registers 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imull(Register dst, Register src); // dst = dst * src. 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incq(Register dst); 749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incq(const Operand& dst); 750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incl(const Operand& dst); 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void lea(Register dst, const Operand& src); 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Multiply rax by src, put the result in rdx:rax. 755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mul(Register src); 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(Register dst); 758a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(const Operand& dst); 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void negl(Register dst); 760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(Register dst); 762a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(const Operand& dst); 763a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, Register src) { 765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x0B, dst, src); 766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 767a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 768a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void orl(Register dst, Register src) { 769a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x0B, dst, src); 770a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, const Operand& src) { 773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x0B, dst, src); 774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Register src) { 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x09, src, dst); 778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, Immediate src) { 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x1, dst, src); 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7843ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void orl(Register dst, Immediate src) { 7853ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block immediate_arithmetic_op_32(0x1, dst, src); 7863ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 7873ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Immediate src) { 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x1, dst, src); 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7923ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void orl(const Operand& dst, Immediate src) { 7933ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block immediate_arithmetic_op_32(0x1, dst, src); 7943ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 7953ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7973ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void rcl(Register dst, Immediate imm8) { 7983ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x2); 7993ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8003ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 8013ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void rol(Register dst, Immediate imm8) { 8023ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x0); 8033ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8043ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 8053ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void rcr(Register dst, Immediate imm8) { 8063ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x3); 8073ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8083ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 8093ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void ror(Register dst, Immediate imm8) { 8103ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x1); 8113ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 812a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 813a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst:src left by cl bits, affecting only dst. 814a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shld(Register dst, Register src); 815a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 816a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts src:dst right by cl bits, affecting only dst. 817a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrd(Register dst, Register src); 818a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 819a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by shift_amount bits. 820a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifting by 1 is handled efficiently. 821a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sar(Register dst, Immediate shift_amount) { 822a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x7); 823a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 824a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 825a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by shift_amount bits. 826a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifting by 1 is handled efficiently. 827a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sarl(Register dst, Immediate shift_amount) { 828a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x7); 829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 830a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by cl % 64 bits. 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sar(Register dst) { 833a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x7); 834a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by cl % 64 bits. 837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sarl(Register dst) { 838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x7); 839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 840a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 841a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shl(Register dst, Immediate shift_amount) { 842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x4); 843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 844a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 845a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shl(Register dst) { 846a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x4); 847a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 848a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 849a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shll(Register dst) { 850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x4); 851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 852a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shll(Register dst, Immediate shift_amount) { 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x4); 855a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr(Register dst, Immediate shift_amount) { 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x5); 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr(Register dst) { 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x5); 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrl(Register dst) { 866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x5); 867a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 868a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrl(Register dst, Immediate shift_amount) { 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x5); 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 872a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void store_rax(void* dst, RelocInfo::Mode mode); 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void store_rax(ExternalReference ref); 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, Register src) { 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x2B, dst, src); 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, const Operand& src) { 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x2B, dst, src); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(const Operand& dst, Register src) { 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x29, src, dst); 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, Immediate src) { 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x5, dst, src); 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(const Operand& dst, Immediate src) { 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x5, dst, src); 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(Register dst, Register src) { 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x2B, dst, src); 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(const Operand& dst, Immediate src) { 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x5, dst, src); 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(Register dst, Immediate src) { 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x5, dst, src); 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subb(Register dst, Immediate src) { 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x5, dst, src); 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9123ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void testb(Register dst, Register src); 913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testb(Register reg, Immediate mask); 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testb(const Operand& op, Immediate mask); 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(Register dst, Register src); 916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(Register reg, Immediate mask); 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(const Operand& op, Immediate mask); 918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(const Operand& op, Register reg); 919a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(Register dst, Register src); 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(Register dst, Immediate mask); 921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, Register src) { 923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x33, dst, src); 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 926a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xorl(Register dst, Register src) { 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x33, dst, src); 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, const Operand& src) { 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x33, dst, src); 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, Register src) { 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x31, src, dst); 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 938a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, Immediate src) { 939a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x6, dst, src); 940a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, Immediate src) { 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x6, dst, src); 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bit operations. 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bt(const Operand& dst, Register src); 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bts(const Operand& dst, Register src); 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Miscellaneous 9513ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void clc(); 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cpuid(); 953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void hlt(); 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void int3(); 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(); 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(int n); 957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void rdtsc(); 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ret(int imm16); 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void setcc(Condition cc, Register reg); 960a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label operations & relative jumps (PPUM Appendix D) 962a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Takes a branch opcode (cc) and a label (L) and generates 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // either a backward branch or a forward branch and links it 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to the label fixup chain. Usage: 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label L; // unbound label 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // forward branch to unbound label 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // bind label to the current pc 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // backward branch to bound label 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // illegal: a label may be bound only once 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: The same Label can be used for forward and backward branches 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // but it may be bound only once. 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind(Label* L); // binds an unbound label L to the current code position 977a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calls 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near relative 32-bit displacement, relative to next instruction. 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Label* L); 9813ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void call(Handle<Code> target, RelocInfo::Mode rmode); 982a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 983a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near absolute indirect, address in register 984a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Register adr); 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near indirect 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(const Operand& operand); 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jumps 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump short or near relative. 9913ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Use a 32-bit signed displacement. 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Label* L); // unconditional jump to L 9933ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void jmp(Handle<Code> target, RelocInfo::Mode rmode); 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump near absolute indirect (r64) 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Register adr); 997a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump near absolute indirect (m64) 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(const Operand& src); 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional jumps 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void j(Condition cc, Label* L); 10033ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode); 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Floating-point operations 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld(int i); 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld1(); 1009a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fldz(); 1010a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1011a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_s(const Operand& adr); 1012a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_d(const Operand& adr); 1013a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1014a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_s(const Operand& adr); 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_d(const Operand& adr); 10163ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fstp(int index); 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1018a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_s(const Operand& adr); 1019a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_d(const Operand& adr); 1020a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fist_s(const Operand& adr); 1022a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_s(const Operand& adr); 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_d(const Operand& adr); 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1026a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisttp_s(const Operand& adr); 1027a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1028a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fabs(); 1029a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fchs(); 1030a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fadd(int i); 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsub(int i); 1033a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmul(int i); 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdiv(int i); 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisub_s(const Operand& adr); 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void faddp(int i = 1); 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubp(int i = 1); 1040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubrp(int i = 1); 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmulp(int i = 1); 1042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdivp(int i = 1); 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem(); 1044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem1(); 1045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fxch(int i = 1); 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fincstp(); 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ffree(int i = 0); 1049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1050a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ftst(); 1051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucomp(int i); 1052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucompp(); 10533ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fucomi(int i); 10543ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fucomip(); 10553ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 1056a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcompp(); 1057a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnstsw_ax(); 1058a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fwait(); 1059a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnclex(); 1060a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1061a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsin(); 1062a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcos(); 1063a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1064a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void frndint(); 1065a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1066a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sahf(); 1067a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1068a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // SSE2 instructions 1069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(const Operand& dst, XMMRegister src); 10703ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movsd(XMMRegister src, XMMRegister dst); 1071a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(XMMRegister src, const Operand& dst); 1072a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1073a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttss2si(Register dst, const Operand& src); 1074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttsd2si(Register dst, const Operand& src); 1075a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1076a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtlsi2sd(XMMRegister dst, const Operand& src); 1077a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtlsi2sd(XMMRegister dst, Register src); 1078a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtqsi2sd(XMMRegister dst, const Operand& src); 1079a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtqsi2sd(XMMRegister dst, Register src); 1080a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addsd(XMMRegister dst, XMMRegister src); 1082a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subsd(XMMRegister dst, XMMRegister src); 1083a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mulsd(XMMRegister dst, XMMRegister src); 1084a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void divsd(XMMRegister dst, XMMRegister src); 1085a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1086a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1087a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, XMMRegister src); 1088a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister reg, const Operand& adr); 1089a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, Register src); 1090a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1091a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use either movsd or movlpd. 1092a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movdbl(XMMRegister dst, const Operand& src); 1093a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movdbl(const Operand& dst, XMMRegister src); 1094a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1095a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Debugging 1096a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Print(); 1097a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1098a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the code size generated from label to here. 1099a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int SizeOfCodeGeneratedSince(Label* l) { return pc_offset() - l->pos(); } 1100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Mark address of the ExitJSFrame code. 1102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordJSReturn(); 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Record a comment relocation entry that can be used by a disassembler. 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use --debug_code to enable. 1106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordComment(const char* msg); 1107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordPosition(int pos); 1109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordStatementPosition(int pos); 1110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void WriteRecordedPositions(); 1111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int pc_offset() const { return pc_ - buffer_; } 1113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_statement_position() const { return current_statement_position_; } 1114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_position() const { return current_position_; } 1115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if there is less than kGap bytes available in the buffer. 1117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If this is the case, we need to grow the buffer before emitting 1118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // an instruction or relocation information. 1119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline bool buffer_overflow() const { 1120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return pc_ >= reloc_info_writer.pos() - kGap; 1121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the number of bytes available in the buffer. 1124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline int available_space() const { return reloc_info_writer.pos() - pc_; } 1125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Avoid overflows for displacements etc. 1127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMaximalBufferSize = 512*MB; 1128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMinimalBufferSize = 4*KB; 1129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block protected: 1131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movsd(XMMRegister dst, const Operand& src); 1132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movsd(const Operand& dst, XMMRegister src); 1133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void emit_sse_operand(XMMRegister reg, const Operand& adr); 1135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void emit_sse_operand(XMMRegister dst, XMMRegister src); 1136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* addr_at(int pos) { return buffer_ + pos; } 1140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte byte_at(int pos) { return buffer_[pos]; } 1141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t long_at(int pos) { 1142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return *reinterpret_cast<uint32_t*>(addr_at(pos)); 1143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void long_at_put(int pos, uint32_t x) { 1145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; 1146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code emission 1149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GrowBuffer(); 1150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit(byte x) { *pc_++ = x; } 1152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitl(uint32_t x); 1153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitq(uint64_t x, RelocInfo::Mode rmode); 1154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitw(uint16_t x); 11553ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block inline void emit_code_target(Handle<Code> target, RelocInfo::Mode rmode); 1156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit(Immediate x) { emitl(x.value_); } 1157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of both register codes. 1160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set. 1162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register reg, Register rm_reg); 1163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(XMMRegister reg, Register rm_reg); 1164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the destination, index, and base register codes. 1167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is set. 1170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register reg, const Operand& op); 1171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(XMMRegister reg, const Operand& op); 1172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the register code. 1175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of register is used for REX.B. 1176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set and REX.R and REX.X are clear. 1177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register rm_reg); 1178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the index and base register codes. 1181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of op's base register is used for REX.B, and the high 1182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bit of op's index register is used for REX.X. 1183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set and REX.R clear. 1184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(const Operand& op); 1185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a REX prefix that only sets REX.W to choose a 64-bit operand size. 1187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_rex_64() { emit(0x48); } 1188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is clear. 1191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register reg, Register rm_reg); 1192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is cleared. 1196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register reg, const Operand& op); 1197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of rm_reg goes to REX.B. 1199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W, REX.R and REX.X are clear. 1200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register rm_reg); 1201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of base goes to REX.B and high bit of index to REX.X. 1203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W and REX.R are clear. 1204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(const Operand& op); 1205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is cleared. If no REX bits are set, no byte is emitted. 1208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register reg, Register rm_reg); 1209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is cleared. If no REX bits are set, nothing 1213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is emitted. 1214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register reg, const Operand& op); 1215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, Register), except that 1217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the registers are XMM registers. 1218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, XMMRegister base); 1219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, Register), except that 1221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the registers are XMM registers. 1222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, Register base); 1223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, const Operand&), except that 1225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the register is an XMM register. 1226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, const Operand& op); 1227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Optionally do as emit_rex_32(Register) if the register number has 1229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the high bit set. 1230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register rm_reg); 1231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Optionally do as emit_rex_32(const Operand&) if the operand register 1233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // numbers have a high bit set. 1234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(const Operand& op); 1235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the ModR/M byte, and optionally the SIB byte and 1238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1- or 4-byte offset for a memory operand. Also encodes 1239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the second operand of the operation, a register or operation 1240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // subcode, into the reg field of the ModR/M byte. 1241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(Register reg, const Operand& adr) { 1242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit_operand(reg.low_bits(), adr); 1243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the ModR/M byte, and optionally the SIB byte and 1246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1- or 4-byte offset for a memory operand. Also used to encode 1247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a three-bit opcode extension into the ModR/M byte. 1248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(int rm, const Operand& adr); 1249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ModR/M byte with registers coded in the reg and rm_reg fields. 1251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_modrm(Register reg, Register rm_reg) { 1252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit(0xC0 | reg.low_bits() << 3 | rm_reg.low_bits()); 1253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ModR/M byte with an operation subcode in the reg field and 1256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a register in the rm_reg field. 1257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_modrm(int code, Register rm_reg) { 1258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_uint3(code)); 1259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit(0xC0 | code << 3 | rm_reg.low_bits()); 1260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the code-object-relative offset of the label's position 1263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_code_relative_offset(Label* label); 1264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit machine code for one of the operations ADD, ADC, SUB, SBC, 1266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // AND, OR, XOR, or CMP. The encodings of these operations are all 1267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // similar, differing just in the opcode or in the reg field of the 1268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ModR/M byte. 1269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_16(byte opcode, Register reg, Register rm_reg); 1270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg); 1271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_32(byte opcode, Register reg, Register rm_reg); 1272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_32(byte opcode, Register reg, const Operand& rm_reg); 1273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op(byte opcode, Register reg, Register rm_reg); 1274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg); 1275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op(byte subcode, Register dst, Immediate src); 1276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src); 1277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a byte in memory or register. 1278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_8(byte subcode, 1279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_8(byte subcode, 1282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a word in memory or register. 1285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_16(byte subcode, 1286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_16(byte subcode, 1289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a 32-bit word in memory or register. 1292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_32(byte subcode, 1293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_32(byte subcode, 1296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit machine code for a shift operation. 1300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift(Register dst, Immediate shift_amount, int subcode); 1301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift_32(Register dst, Immediate shift_amount, int subcode); 1302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shift dst by cl % 64 bits. 1303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift(Register dst, int subcode); 1304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift_32(Register dst, int subcode); 1305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_farith(int b1, int b2, int i); 1307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // labels 1309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void print(Label* L); 1310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind_to(Label* L, int pos); 1311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void link_to(Label* L, Label* appendix); 1312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // record reloc info for current pc_ 1314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); 1315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class CodePatcher; 1317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class EnsureSpace; 1318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class RegExpMacroAssemblerX64; 1319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code buffer: 1321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The buffer into which code and relocation info are generated. 1322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* buffer_; 1323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int buffer_size_; 1324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // True if the assembler owns the buffer, false if buffer is external. 1325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool own_buffer_; 1326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // A previously allocated buffer of kMinimalBufferSize bytes, or NULL. 1327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static byte* spare_buffer_; 1328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code generation 1330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* pc_; // the program counter; moves forward 1331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfoWriter reloc_info_writer; 1332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 13333ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block List< Handle<Code> > code_targets_; 1334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // push-pop elimination 1335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* last_pc_; 1336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // source position information 1338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_statement_position_; 1339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_position_; 1340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int written_statement_position_; 1341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int written_position_; 1342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Helper class that ensures that there is enough space for generating 1346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// instructions and relocation information. The constructor makes 1347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// sure that there is enough space and (in debug mode) the destructor 1348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// checks that we did not generate too much. 1349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass EnsureSpace BASE_EMBEDDED { 1350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 1351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { 1352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (assembler_->buffer_overflow()) assembler_->GrowBuffer(); 1353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block space_before_ = assembler_->available_space(); 1355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~EnsureSpace() { 1360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int bytes_generated = space_before_ - assembler_->available_space(); 1361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(bytes_generated < assembler_->kGap); 1362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler* assembler_; 1367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int space_before_; 1369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 1373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1374a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_X64_ASSEMBLER_X64_H_ 1375