assembler-x64.h revision a7e24c173cf37484693b9abb38e494fa7bd7baeb
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 225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // aliases 226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block carry = below, 227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_carry = above_equal, 228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block zero = equal, 229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_zero = not_equal, 230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sign = negative, 231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_sign = positive 232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Returns the equivalent of !cc. 236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Negation of the default no_condition (-1) results in a non-default 237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// no_condition value (-2). As long as tests for no_condition check 238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// for condition < 0, this will work as expected. 239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition NegateCondition(Condition cc); 240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Corresponds to transposing the operands of a comparison. 242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition ReverseCondition(Condition cc) { 243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (cc) { 244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below: 245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above; 246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above: 247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below; 248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above_equal: 249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below_equal; 250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below_equal: 251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above_equal; 252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less: 253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater; 254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater: 255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less; 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater_equal: 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less_equal; 258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less_equal: 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater_equal; 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block default: 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return cc; 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Hint { 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_hint = 0, 267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_taken = 0x2e, 268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block taken = 0x3e 269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The result of negating a hint is as if the corresponding condition 272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// were negated by NegateCondition. That is, no_hint is mapped to 273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// itself and not_taken and taken are mapped to each other. 274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Hint NegateHint(Hint hint) { 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (hint == no_hint) 276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ? no_hint 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : ((hint == not_taken) ? taken : not_taken); 278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Immediates 283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Immediate BASE_EMBEDDED { 285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Immediate(int32_t value) : value_(value) {} 287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline explicit Immediate(Smi* value); 288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t value_; 291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Operands 298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum ScaleFactor { 300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_1 = 0, 301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_2 = 1, 302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_4 = 2, 303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_8 = 3, 304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_int_size = times_4, 305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_half_pointer_size = times_4, 306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_pointer_size = times_8 307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Operand BASE_EMBEDDED { 311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + disp/r] 313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register base, int32_t disp); 314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + index*scale + disp/r] 316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register base, 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register index, 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp); 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [index*scale + disp/r] 322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register index, 323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp); 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte rex_; 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte buf_[10]; 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The number of bytes in buf_. 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block unsigned int len_; 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode_; 332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the ModR/M byte without an encoded 'reg' register. The 334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is encoded later as part of the emit_operand operation. 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // set_modrm can be called before or after set_sib and set_disp*. 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_modrm(int mod, Register rm); 337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the SIB byte if one is needed. Sets the length to 2 rather than 1. 339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_sib(ScaleFactor scale, Register index, Register base); 340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adds operand displacement fields (offsets added to the memory address). 342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Needs to be called after set_sib, not before it. 343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp8(int disp); 344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp32(int disp); 345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures keeps track of which features are supported by the target CPU. 351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Supported features must be enabled by a Scope before use. 352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Example: 353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// if (CpuFeatures::IsSupported(SSE3)) { 354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures::Scope fscope(SSE3); 355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate SSE3 floating point code. 356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } else { 357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate standard x87 or SSE2 floating point code. 358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } 359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass CpuFeatures : public AllStatic { 360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Feature flags bit positions. They are mostly based on the CPUID spec. 362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (We assign CPUID itself to one of the currently reserved bits -- 363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // feel free to change this if needed.) 364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block enum Feature { SSE3 = 32, 365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SSE2 = 26, 366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CMOV = 15, 367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RDTSC = 4, 368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CPUID = 10, 369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SAHF = 0}; 370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Detect features of the target CPU. Set safe defaults if the serializer 371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is enabled (snapshots must be portable). 372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static void Probe(); 373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is supported by the target CPU. 374a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsSupported(Feature f) { 375a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (supported_ & (V8_UINT64_C(1) << f)) != 0; 376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is currently enabled. 378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsEnabled(Feature f) { 379a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (enabled_ & (V8_UINT64_C(1) << f)) != 0; 380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Enable a specified feature within a scope. 382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block class Scope BASE_EMBEDDED { 383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Scope(Feature f) { 386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(CpuFeatures::IsSupported(f)); 387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block old_enabled_ = CpuFeatures::enabled_; 388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CpuFeatures::enabled_ |= (V8_UINT64_C(1) << f); 389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Scope() { CpuFeatures::enabled_ = old_enabled_; } 391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint64_t old_enabled_; 393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Scope(Feature f) {} 396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 397a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 398a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 399a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Safe defaults include SSE2 and CMOV for X64. It is always available, if 400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // anyone checks, but they shouldn't need to check. 401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const uint64_t kDefaultCpuFeatures = 402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block (1 << CpuFeatures::SSE2 | 1 << CpuFeatures::CMOV); 403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static uint64_t supported_; 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static uint64_t enabled_; 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 408a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Assembler : public Malloced { 409a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We check before assembling an instruction that there is sufficient 411a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // space to write an instruction and its relocation information. 412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The relocation writer's position must be kGap bytes above the end of 413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the generated instructions. This leaves enough space for the 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // longest possible x64 instruction, 15 bytes, and the longest possible 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information encoding, RelocInfoWriter::kMaxLength == 16. 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (There is a 15 byte limit on x64 instruction length that rules out some 417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // otherwise valid instructions.) 418a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This allows for a single, fast space check per instruction. 419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kGap = 32; 420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create an assembler. Instructions and relocation information are emitted 423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // into a buffer, with the instructions starting from the beginning and the 424a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information starting from the end of the buffer. See CodeDesc 425a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for a detailed comment on the layout (globals.h). 426a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is NULL, the assembler allocates and grows its own 428a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // buffer, and buffer_size determines the initial buffer size. The buffer is 429a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // owned by the assembler and deallocated upon destruction of the assembler. 430a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 431a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is not NULL, the assembler uses the provided buffer 432a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for code generation and assumes its size to be buffer_size. If the buffer 433a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is too small, a fatal error occurs. No deallocation of the buffer is done 434a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // upon destruction of the assembler. 435a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler(void* buffer, int buffer_size); 436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Assembler(); 437a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 438a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // GetCode emits any pending (non-emitted) code and fills the descriptor 439a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // desc. GetCode() is idempotent; it returns the same result if no other 440a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assembler functions are invoked in between GetCode() calls. 441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GetCode(CodeDesc* desc); 442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 443a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Read/Modify the code target in the branch/call instruction at pc. 444a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // On the x64 architecture, the address is absolute, not relative. 445a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static inline Address target_address_at(Address pc); 446a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static inline void set_target_address_at(Address pc, Address target); 447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 448a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Distance between the address of the code target in the call instruction 449a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // and the return address. Checked in the debug build. 450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kCallTargetAddressOffset = 3 + kPointerSize; 451a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Distance between start of patched return sequence and the emitted address 452a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to jump to (movq = REX.W 0xB8+r.). 453a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kPatchReturnSequenceAddressOffset = 2; 454a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 455a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // --------------------------------------------------------------------------- 456a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code generation 457a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 458a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Function names correspond one-to-one to x64 instruction mnemonics. 459a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Unless specified otherwise, instructions operate on 64-bit operands. 460a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 461a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we need versions of an assembly instruction that operate on different 462a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // width arguments, we add a single-letter suffix specifying the width. 463a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This is done for the following instructions: mov, cmp, inc, dec, 464a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // add, sub, and test. 465a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // There are no versions of these instructions without the suffix. 466a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 8-bit (byte) operands/registers have a trailing 'b'. 467a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 16-bit (word) operands/registers have a trailing 'w'. 468a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 32-bit (doubleword) operands/registers use 'l'. 469a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 64-bit (quadword) operands/registers use 'q'. 470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 471a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Some mnemonics, such as "and", are the same as C++ keywords. 472a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Naming conflicts with C++ keywords are resolved by adding a trailing '_'. 473a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 474a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Insert the smallest number of nop instructions 475a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // possible to align the pc offset to a multiple 476a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of m. m must be a power of 2. 477a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Align(int m); 478a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 479a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Stack 480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pushfq(); 481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void popfq(); 482a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 483a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Immediate value); 484a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Register src); 485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(const Operand& src); 486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Label* label, RelocInfo::Mode relocation_mode); 487a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 488a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(Register dst); 489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(const Operand& dst); 490a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 491a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void enter(Immediate size); 492a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void leave(); 493a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 494a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves 495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(Register dst, const Operand& src); 496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(Register dst, Immediate imm); 497a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(const Operand& dst, Register src); 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 499a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, Register src); 500a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, const Operand& src); 501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Register src); 502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Immediate imm); 503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load a 32-bit immediate value, zero-extended to 64 bits. 504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, Immediate imm32); 505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move 64 bit register value to 64-bit memory location. 507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(const Operand& dst, Register src); 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move 64 bit memory location to 64-bit register value. 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, const Operand& src); 510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Register src); 511a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign extends immediate 32-bit value to 64 bits. 512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Immediate x); 513a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move the offset of the label location relative to the current 514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // position (after the move) to the destination. 515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Label* src); 516a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move sign extended immediate to memory location. 518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(const Operand& dst, Immediate value); 519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // New x64 instructions to load a 64-bit immediate into a register. 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All 64-bit immediates must have a relocation mode. 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, void* ptr, RelocInfo::Mode rmode); 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, int64_t value, RelocInfo::Mode rmode); 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, const char* s, RelocInfo::Mode rmode); 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves the address of the external reference into the register. 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, ExternalReference ext); 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode); 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsxlq(Register dst, Register src); 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsxlq(Register dst, const Operand& src); 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxbq(Register dst, const Operand& src); 531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxbl(Register dst, const Operand& src); 532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxwl(Register dst, const Operand& src); 533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // New x64 instruction to load from an immediate 64-bit pointer into RAX. 535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void load_rax(void* ptr, RelocInfo::Mode rmode); 536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void load_rax(ExternalReference ext); 537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional moves. 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovq(Condition cc, Register dst, Register src); 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovq(Condition cc, Register dst, const Operand& src); 541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovl(Condition cc, Register dst, Register src); 542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovl(Condition cc, Register dst, const Operand& src); 543a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Exchange two registers 545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xchg(Register dst, Register src); 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Arithmetics 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, Register src) { 549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (dst.low_bits() == 4) { // Forces SIB byte. 550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x01, src, dst); 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x03, dst, src); 553a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 554a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 555a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 556a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, Immediate src) { 557a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x0, dst, src); 558a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 559a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, const Operand& src) { 561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x03, dst, src); 562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 564a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(const Operand& dst, Immediate src) { 565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x0, dst, src); 566a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 567a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, Register src) { 569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x03, dst, src); 570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, const Operand& src) { 573a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x03, dst, src); 574a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 575a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 576a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(const Operand& dst, Register src) { 577a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x01, src, dst); 578a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 579a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, Immediate src) { 581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x0, dst, src); 582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 584a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(const Operand& dst, Immediate src) { 585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x0, dst, src); 586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 588a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, Immediate src) { 589a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x7, dst, src); 590a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 591a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 592a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb_al(Immediate src); 593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, Register src) { 595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3A, dst, src); 596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 597a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, const Operand& src) { 599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3A, dst, src); 600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& dst, Register src) { 603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x38, src, dst); 604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 606a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& dst, Immediate src) { 607a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x7, dst, src); 608a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 610a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& dst, Immediate src) { 611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_16(0x7, dst, src); 612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, Immediate src) { 615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_16(0x7, dst, src); 616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, const Operand& src) { 619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x3B, dst, src); 620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 621a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 622a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, Register src) { 623a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x3B, dst, src); 624a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 625a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 626a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& dst, Register src) { 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x39, src, dst); 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, Register src) { 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x3B, dst, src); 632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, const Operand& src) { 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x3B, dst, src); 636a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 638a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(const Operand& dst, Register src) { 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x39, src, dst); 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, Immediate src) { 643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x7, dst, src); 644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(const Operand& dst, Immediate src) { 647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x7, dst, src); 648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, Register src) { 651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3B, dst, src); 652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 654a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, const Operand& src) { 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3B, dst, src); 656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(const Operand& dst, Register src) { 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x39, src, dst); 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, Immediate src) { 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x7, dst, src); 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(const Operand& dst, Immediate src) { 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x7, dst, src); 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, Register src) { 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x23, dst, src); 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, const Operand& src) { 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x23, dst, src); 676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 678a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, Register src) { 679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x21, src, dst); 680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, Immediate src) { 683a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x4, dst, src); 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, Immediate src) { 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x4, dst, src); 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void andl(Register dst, Immediate src) { 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x4, dst, src); 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decq(Register dst); 695a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decq(const Operand& dst); 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decl(Register dst); 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decl(const Operand& dst); 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign-extends rax into rdx:rax. 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cqo(); 701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign-extends eax into edx:eax. 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cdq(); 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Divide rdx:rax by src. Quotient in rax, remainder in rdx. 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idivq(Register src); 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idivl(Register src); 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Signed multiply instructions. 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register src); // rdx:rax = rax * src. 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src); // dst = dst * src. 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, const Operand& src); // dst = dst * src. 713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src, Immediate imm); // dst = src * imm. 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Multiply 32 bit registers 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imull(Register dst, Register src); // dst = dst * src. 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incq(Register dst); 718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incq(const Operand& dst); 719a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incl(const Operand& dst); 720a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 721a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void lea(Register dst, const Operand& src); 722a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Multiply rax by src, put the result in rdx:rax. 724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mul(Register src); 725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(Register dst); 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(const Operand& dst); 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void negl(Register dst); 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(Register dst); 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(const Operand& dst); 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, Register src) { 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x0B, dst, src); 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void orl(Register dst, Register src) { 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x0B, dst, src); 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, const Operand& src) { 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x0B, dst, src); 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Register src) { 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x09, src, dst); 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, Immediate src) { 750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x1, dst, src); 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Immediate src) { 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x1, dst, src); 755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 758a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void rcl(Register dst, uint8_t imm8); 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst:src left by cl bits, affecting only dst. 761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shld(Register dst, Register src); 762a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 763a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts src:dst right by cl bits, affecting only dst. 764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrd(Register dst, Register src); 765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by shift_amount bits. 767a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifting by 1 is handled efficiently. 768a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sar(Register dst, Immediate shift_amount) { 769a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x7); 770a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by shift_amount bits. 773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifting by 1 is handled efficiently. 774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sarl(Register dst, Immediate shift_amount) { 775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x7); 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by cl % 64 bits. 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sar(Register dst) { 780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x7); 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by cl % 64 bits. 784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sarl(Register dst) { 785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x7); 786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shl(Register dst, Immediate shift_amount) { 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x4); 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shl(Register dst) { 793a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x4); 794a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shll(Register dst) { 797a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x4); 798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 799a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shll(Register dst, Immediate shift_amount) { 801a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x4); 802a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr(Register dst, Immediate shift_amount) { 805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x5); 806a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr(Register dst) { 809a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x5); 810a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 811a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 812a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrl(Register dst) { 813a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x5); 814a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 815a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 816a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrl(Register dst, Immediate shift_amount) { 817a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x5); 818a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 819a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 820a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void store_rax(void* dst, RelocInfo::Mode mode); 821a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void store_rax(ExternalReference ref); 822a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 823a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, Register src) { 824a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x2B, dst, src); 825a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 826a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 827a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, const Operand& src) { 828a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x2B, dst, src); 829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 830a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(const Operand& dst, Register src) { 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x29, src, dst); 833a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 834a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, Immediate src) { 836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x5, dst, src); 837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(const Operand& dst, Immediate src) { 840a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x5, dst, src); 841a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(Register dst, Register src) { 844a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x2B, dst, src); 845a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 846a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 847a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(const Operand& dst, Immediate src) { 848a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x5, dst, src); 849a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(Register dst, Immediate src) { 852a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x5, dst, src); 853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 855a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subb(Register dst, Immediate src) { 856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x5, dst, src); 857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testb(Register reg, Immediate mask); 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testb(const Operand& op, Immediate mask); 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(Register dst, Register src); 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(Register reg, Immediate mask); 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(const Operand& op, Immediate mask); 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(const Operand& op, Register reg); 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(Register dst, Register src); 866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(Register dst, Immediate mask); 867a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 868a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, Register src) { 869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x33, dst, src); 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 872a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xorl(Register dst, Register src) { 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x33, dst, src); 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, const Operand& src) { 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x33, dst, src); 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, Register src) { 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x31, src, dst); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, Immediate src) { 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x6, dst, src); 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, Immediate src) { 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x6, dst, src); 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bit operations. 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bt(const Operand& dst, Register src); 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bts(const Operand& dst, Register src); 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Miscellaneous 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cpuid(); 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void hlt(); 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void int3(); 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(); 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(int n); 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void rdtsc(); 903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ret(int imm16); 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void setcc(Condition cc, Register reg); 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label operations & relative jumps (PPUM Appendix D) 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Takes a branch opcode (cc) and a label (L) and generates 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // either a backward branch or a forward branch and links it 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to the label fixup chain. Usage: 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label L; // unbound label 913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // forward branch to unbound label 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // bind label to the current pc 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // backward branch to bound label 916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // illegal: a label may be bound only once 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: The same Label can be used for forward and backward branches 919a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // but it may be bound only once. 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind(Label* L); // binds an unbound label L to the current code position 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calls 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near relative 32-bit displacement, relative to next instruction. 925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Label* L); 926a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near absolute indirect, address in register 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Register adr); 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near indirect 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(const Operand& operand); 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jumps 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump short or near relative. 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Label* L); // unconditional jump to L 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump near absolute indirect (r64) 938a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Register adr); 939a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 940a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump near absolute indirect (m64) 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(const Operand& src); 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional jumps 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void j(Condition cc, Label* L); 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Floating-point operations 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld(int i); 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld1(); 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fldz(); 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_s(const Operand& adr); 953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_d(const Operand& adr); 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_s(const Operand& adr); 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_d(const Operand& adr); 957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_s(const Operand& adr); 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_d(const Operand& adr); 960a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fist_s(const Operand& adr); 962a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_s(const Operand& adr); 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_d(const Operand& adr); 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisttp_s(const Operand& adr); 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fabs(); 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fchs(); 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fadd(int i); 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsub(int i); 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmul(int i); 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdiv(int i); 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisub_s(const Operand& adr); 977a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void faddp(int i = 1); 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubp(int i = 1); 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubrp(int i = 1); 981a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmulp(int i = 1); 982a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdivp(int i = 1); 983a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem(); 984a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem1(); 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fxch(int i = 1); 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fincstp(); 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ffree(int i = 0); 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ftst(); 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucomp(int i); 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucompp(); 993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcompp(); 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnstsw_ax(); 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fwait(); 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnclex(); 997a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsin(); 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcos(); 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void frndint(); 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sahf(); 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // SSE2 instructions 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(const Operand& dst, XMMRegister src); 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(Register src, XMMRegister dst); 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(XMMRegister dst, Register src); 1009a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(XMMRegister src, const Operand& dst); 1010a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1011a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttss2si(Register dst, const Operand& src); 1012a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttsd2si(Register dst, const Operand& src); 1013a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1014a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtlsi2sd(XMMRegister dst, const Operand& src); 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtlsi2sd(XMMRegister dst, Register src); 1016a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtqsi2sd(XMMRegister dst, const Operand& src); 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtqsi2sd(XMMRegister dst, Register src); 1018a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1019a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addsd(XMMRegister dst, XMMRegister src); 1020a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subsd(XMMRegister dst, XMMRegister src); 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mulsd(XMMRegister dst, XMMRegister src); 1022a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void divsd(XMMRegister dst, XMMRegister src); 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, XMMRegister src); 1026a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister reg, const Operand& adr); 1027a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, Register src); 1028a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1029a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use either movsd or movlpd. 1030a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movdbl(XMMRegister dst, const Operand& src); 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movdbl(const Operand& dst, XMMRegister src); 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1033a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Debugging 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Print(); 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the code size generated from label to here. 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int SizeOfCodeGeneratedSince(Label* l) { return pc_offset() - l->pos(); } 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Mark address of the ExitJSFrame code. 1040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordJSReturn(); 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Record a comment relocation entry that can be used by a disassembler. 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use --debug_code to enable. 1044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordComment(const char* msg); 1045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordPosition(int pos); 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordStatementPosition(int pos); 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void WriteRecordedPositions(); 1049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1050a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Writes a doubleword of data in the code stream. 1051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Used for inline tables, e.g., jump-tables. 1052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void dd(uint32_t data); 1053a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Writes a quadword of data in the code stream. 1055a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Used for inline tables, e.g., jump-tables. 1056a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void dd(uint64_t data, RelocInfo::Mode reloc_info); 1057a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1058a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int pc_offset() const { return pc_ - buffer_; } 1059a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_statement_position() const { return current_statement_position_; } 1060a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_position() const { return current_position_; } 1061a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1062a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if there is less than kGap bytes available in the buffer. 1063a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If this is the case, we need to grow the buffer before emitting 1064a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // an instruction or relocation information. 1065a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline bool buffer_overflow() const { 1066a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return pc_ >= reloc_info_writer.pos() - kGap; 1067a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1068a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the number of bytes available in the buffer. 1070a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline int available_space() const { return reloc_info_writer.pos() - pc_; } 1071a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1072a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Avoid overflows for displacements etc. 1073a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMaximalBufferSize = 512*MB; 1074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMinimalBufferSize = 4*KB; 1075a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1076a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block protected: 1077a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movsd(XMMRegister dst, const Operand& src); 1078a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movsd(const Operand& dst, XMMRegister src); 1079a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1080a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void emit_sse_operand(XMMRegister reg, const Operand& adr); 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void emit_sse_operand(XMMRegister dst, XMMRegister src); 1082a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1083a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1084a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1085a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* addr_at(int pos) { return buffer_ + pos; } 1086a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte byte_at(int pos) { return buffer_[pos]; } 1087a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t long_at(int pos) { 1088a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return *reinterpret_cast<uint32_t*>(addr_at(pos)); 1089a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1090a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void long_at_put(int pos, uint32_t x) { 1091a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; 1092a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1093a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1094a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code emission 1095a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GrowBuffer(); 1096a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1097a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit(byte x) { *pc_++ = x; } 1098a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitl(uint32_t x); 1099a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit(Handle<Object> handle); 1100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitq(uint64_t x, RelocInfo::Mode rmode); 1101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitw(uint16_t x); 1102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit(Immediate x) { emitl(x.value_); } 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of both register codes. 1106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set. 1108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register reg, Register rm_reg); 1109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(XMMRegister reg, Register rm_reg); 1110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the destination, index, and base register codes. 1113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is set. 1116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register reg, const Operand& op); 1117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(XMMRegister reg, const Operand& op); 1118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the register code. 1121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of register is used for REX.B. 1122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set and REX.R and REX.X are clear. 1123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register rm_reg); 1124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the index and base register codes. 1127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of op's base register is used for REX.B, and the high 1128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bit of op's index register is used for REX.X. 1129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set and REX.R clear. 1130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(const Operand& op); 1131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a REX prefix that only sets REX.W to choose a 64-bit operand size. 1133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_rex_64() { emit(0x48); } 1134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is clear. 1137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register reg, Register rm_reg); 1138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is cleared. 1142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register reg, const Operand& op); 1143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of rm_reg goes to REX.B. 1145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W, REX.R and REX.X are clear. 1146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register rm_reg); 1147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of base goes to REX.B and high bit of index to REX.X. 1149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W and REX.R are clear. 1150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(const Operand& op); 1151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is cleared. If no REX bits are set, no byte is emitted. 1154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register reg, Register rm_reg); 1155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is cleared. If no REX bits are set, nothing 1159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is emitted. 1160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register reg, const Operand& op); 1161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, Register), except that 1163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the registers are XMM registers. 1164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, XMMRegister base); 1165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, Register), except that 1167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the registers are XMM registers. 1168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, Register base); 1169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, const Operand&), except that 1171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the register is an XMM register. 1172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, const Operand& op); 1173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Optionally do as emit_rex_32(Register) if the register number has 1175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the high bit set. 1176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register rm_reg); 1177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Optionally do as emit_rex_32(const Operand&) if the operand register 1179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // numbers have a high bit set. 1180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(const Operand& op); 1181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the ModR/M byte, and optionally the SIB byte and 1184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1- or 4-byte offset for a memory operand. Also encodes 1185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the second operand of the operation, a register or operation 1186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // subcode, into the reg field of the ModR/M byte. 1187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(Register reg, const Operand& adr) { 1188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit_operand(reg.low_bits(), adr); 1189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the ModR/M byte, and optionally the SIB byte and 1192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1- or 4-byte offset for a memory operand. Also used to encode 1193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a three-bit opcode extension into the ModR/M byte. 1194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(int rm, const Operand& adr); 1195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ModR/M byte with registers coded in the reg and rm_reg fields. 1197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_modrm(Register reg, Register rm_reg) { 1198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit(0xC0 | reg.low_bits() << 3 | rm_reg.low_bits()); 1199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ModR/M byte with an operation subcode in the reg field and 1202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a register in the rm_reg field. 1203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_modrm(int code, Register rm_reg) { 1204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_uint3(code)); 1205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit(0xC0 | code << 3 | rm_reg.low_bits()); 1206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the code-object-relative offset of the label's position 1209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_code_relative_offset(Label* label); 1210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit machine code for one of the operations ADD, ADC, SUB, SBC, 1212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // AND, OR, XOR, or CMP. The encodings of these operations are all 1213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // similar, differing just in the opcode or in the reg field of the 1214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ModR/M byte. 1215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_16(byte opcode, Register reg, Register rm_reg); 1216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg); 1217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_32(byte opcode, Register reg, Register rm_reg); 1218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_32(byte opcode, Register reg, const Operand& rm_reg); 1219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op(byte opcode, Register reg, Register rm_reg); 1220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg); 1221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op(byte subcode, Register dst, Immediate src); 1222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src); 1223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a byte in memory or register. 1224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_8(byte subcode, 1225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_8(byte subcode, 1228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a word in memory or register. 1231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_16(byte subcode, 1232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_16(byte subcode, 1235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a 32-bit word in memory or register. 1238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_32(byte subcode, 1239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_32(byte subcode, 1242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit machine code for a shift operation. 1246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift(Register dst, Immediate shift_amount, int subcode); 1247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift_32(Register dst, Immediate shift_amount, int subcode); 1248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shift dst by cl % 64 bits. 1249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift(Register dst, int subcode); 1250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift_32(Register dst, int subcode); 1251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_farith(int b1, int b2, int i); 1253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // labels 1255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void print(Label* L); 1256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind_to(Label* L, int pos); 1257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void link_to(Label* L, Label* appendix); 1258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // record reloc info for current pc_ 1260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); 1261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class CodePatcher; 1263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class EnsureSpace; 1264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class RegExpMacroAssemblerX64; 1265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code buffer: 1267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The buffer into which code and relocation info are generated. 1268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* buffer_; 1269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int buffer_size_; 1270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // True if the assembler owns the buffer, false if buffer is external. 1271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool own_buffer_; 1272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // A previously allocated buffer of kMinimalBufferSize bytes, or NULL. 1273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static byte* spare_buffer_; 1274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code generation 1276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* pc_; // the program counter; moves forward 1277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfoWriter reloc_info_writer; 1278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // push-pop elimination 1280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* last_pc_; 1281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // source position information 1283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_statement_position_; 1284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_position_; 1285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int written_statement_position_; 1286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int written_position_; 1287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Helper class that ensures that there is enough space for generating 1291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// instructions and relocation information. The constructor makes 1292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// sure that there is enough space and (in debug mode) the destructor 1293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// checks that we did not generate too much. 1294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass EnsureSpace BASE_EMBEDDED { 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 1296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { 1297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (assembler_->buffer_overflow()) assembler_->GrowBuffer(); 1298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block space_before_ = assembler_->available_space(); 1300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~EnsureSpace() { 1305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int bytes_generated = space_before_ - assembler_->available_space(); 1306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(bytes_generated < assembler_->kGap); 1307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler* assembler_; 1312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int space_before_; 1314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 1318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_X64_ASSEMBLER_X64_H_ 1320