assembler-x64.h revision f7060e27768c550ace7ec48ad8c093466db52dfa
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 40d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block#include "serialize.h" 41d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Utility functions 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Test whether a 64-bit value is in a specific range. 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool is_uint32(int64_t x) { 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int64_t kUInt32Mask = V8_INT64_C(0xffffffff); 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return x == (x & kUInt32Mask); 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool is_int32(int64_t x) { 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int64_t kMinIntValue = V8_INT64_C(-0x80000000); 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return is_uint32(x - kMinIntValue); 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool uint_is_int32(uint64_t x) { 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const uint64_t kMaxIntValue = V8_UINT64_C(0x80000000); 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return x < kMaxIntValue; 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic inline bool is_uint32(uint64_t x) { 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const uint64_t kMaxUIntValue = V8_UINT64_C(0x100000000); 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return x < kMaxUIntValue; 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CPU Registers. 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 1) We would prefer to use an enum, but enum values are assignment- 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// compatible with int, which has caused code-generation bugs. 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 2) We would prefer to use a class instead of a struct but we don't like 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the register initialization to depend on the particular initialization 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// order (which appears to be different on OS X, Linux, and Windows for the 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// installed versions of C++ we tried). Using a struct permits C-style 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "initialization". Also, the Register objects cannot be const as this 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// forces initialization stubs in MSVC, making us dependent on initialization 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// order. 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 3) By not using an enum, we are possibly preventing the compiler from 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// doing certain constant folds, which may significantly reduce the 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// code generated for some assembly instructions (because they boil down 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// to a few constants). If this is a problem, we could change the code 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// such that we use an enum in optimized mode, and the struct in debug 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// mode. This way we get the compile-time error checking in debug mode 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// and best performance in optimized code. 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct Register { 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static Register toRegister(int code) { 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register r = { code }; 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return r; 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_valid() const { return 0 <= code_ && code_ < 16; } 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is(Register reg) const { return code_ == reg.code_; } 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code() const { 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int bit() const { 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return 1 << code_; 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the high bit of the register code as a 0 or 1. Used often 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // when constructing the REX prefix byte. 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int high_bit() const { 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ >> 3; 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the 3 low bits of the register code. Used when encoding registers 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in modR/M, SIB, and opcode bytes. 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int low_bits() const { 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ & 0x7; 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1163100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Unfortunately we can't make this private in a struct when initializing 1173100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // by assignment. 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 121402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rax = { 0 }; 122402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rcx = { 1 }; 123402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rdx = { 2 }; 124402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rbx = { 3 }; 125402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rsp = { 4 }; 126402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rbp = { 5 }; 127402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rsi = { 6 }; 128402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register rdi = { 7 }; 129402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r8 = { 8 }; 130402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r9 = { 9 }; 131402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r10 = { 10 }; 132402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r11 = { 11 }; 133402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r12 = { 12 }; 134402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r13 = { 13 }; 135402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r14 = { 14 }; 136402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register r15 = { 15 }; 137402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst Register no_reg = { -1 }; 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct XMMRegister { 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_valid() const { return 0 <= code_ && code_ < 16; } 142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code() const { 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the high bit of the register code as a 0 or 1. Used often 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // when constructing the REX prefix byte. 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int high_bit() const { 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ >> 3; 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the 3 low bits of the register code. Used when encoding registers 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in modR/M, SIB, and opcode bytes. 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int low_bits() const { 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_ & 0x7; 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 161402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm0 = { 0 }; 162402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm1 = { 1 }; 163402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm2 = { 2 }; 164402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm3 = { 3 }; 165402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm4 = { 4 }; 166402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm5 = { 5 }; 167402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm6 = { 6 }; 168402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm7 = { 7 }; 169402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm8 = { 8 }; 170402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm9 = { 9 }; 171402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm10 = { 10 }; 172402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm11 = { 11 }; 173402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm12 = { 12 }; 174402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm13 = { 13 }; 175402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm14 = { 14 }; 176402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescuconst XMMRegister xmm15 = { 15 }; 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Condition { 179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // any value < 0 is considered no_condition 180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_condition = -1, 181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block overflow = 0, 183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_overflow = 1, 184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block below = 2, 185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block above_equal = 3, 186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block equal = 4, 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_equal = 5, 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block below_equal = 6, 189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block above = 7, 190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block negative = 8, 191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block positive = 9, 192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block parity_even = 10, 193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block parity_odd = 11, 194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block less = 12, 195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block greater_equal = 13, 196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block less_equal = 14, 197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block greater = 15, 198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1993ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Fake conditions that are handled by the 2003ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // opcodes using them. 2013ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block always = 16, 2023ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block never = 17, 203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // aliases 204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block carry = below, 205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_carry = above_equal, 206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block zero = equal, 207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_zero = not_equal, 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sign = negative, 2093ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block not_sign = positive, 2103ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block last_condition = greater 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Returns the equivalent of !cc. 215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Negation of the default no_condition (-1) results in a non-default 216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// no_condition value (-2). As long as tests for no_condition check 217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// for condition < 0, this will work as expected. 218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition NegateCondition(Condition cc); 219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Corresponds to transposing the operands of a comparison. 221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition ReverseCondition(Condition cc) { 222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (cc) { 223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below: 224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above; 225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above: 226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below; 227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above_equal: 228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below_equal; 229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below_equal: 230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above_equal; 231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less: 232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater; 233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater: 234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less; 235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater_equal: 236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less_equal; 237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less_equal: 238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater_equal; 239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block default: 240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return cc; 241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Hint { 245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_hint = 0, 246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_taken = 0x2e, 247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block taken = 0x3e 248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The result of negating a hint is as if the corresponding condition 251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// were negated by NegateCondition. That is, no_hint is mapped to 252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// itself and not_taken and taken are mapped to each other. 253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Hint NegateHint(Hint hint) { 254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (hint == no_hint) 255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ? no_hint 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : ((hint == not_taken) ? taken : not_taken); 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Immediates 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Immediate BASE_EMBEDDED { 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Immediate(int32_t value) : value_(value) {} 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t value_; 269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Operands 276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum ScaleFactor { 278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_1 = 0, 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_2 = 1, 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_4 = 2, 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_8 = 3, 282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_int_size = times_4, 283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_pointer_size = times_8 284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Operand BASE_EMBEDDED { 288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + disp/r] 290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register base, int32_t disp); 291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + index*scale + disp/r] 293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register base, 294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register index, 295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp); 297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [index*scale + disp/r] 299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Operand(Register index, 300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp); 302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 303f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Offset from existing memory operand. 304f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // Offset is added to existing displacement as 32-bit signed values and 305f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // this must not overflow. 306f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke Operand(const Operand& base, int32_t offset); 307f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte rex_; 310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte buf_[10]; 311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The number of bytes in buf_. 312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block unsigned int len_; 313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the ModR/M byte without an encoded 'reg' register. The 315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is encoded later as part of the emit_operand operation. 316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // set_modrm can be called before or after set_sib and set_disp*. 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_modrm(int mod, Register rm); 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the SIB byte if one is needed. Sets the length to 2 rather than 1. 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_sib(ScaleFactor scale, Register index, Register base); 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Adds operand displacement fields (offsets added to the memory address). 323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Needs to be called after set_sib, not before it. 324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp8(int disp); 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp32(int disp); 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures keeps track of which features are supported by the target CPU. 332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Supported features must be enabled by a Scope before use. 333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Example: 334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// if (CpuFeatures::IsSupported(SSE3)) { 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures::Scope fscope(SSE3); 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate SSE3 floating point code. 337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } else { 338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate standard x87 or SSE2 floating point code. 339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } 340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass CpuFeatures : public AllStatic { 341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Detect features of the target CPU. Set safe defaults if the serializer 343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is enabled (snapshots must be portable). 344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static void Probe(); 345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is supported by the target CPU. 346d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static bool IsSupported(CpuFeature f) { 3473ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SSE2 && !FLAG_enable_sse2) return false; 3483ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SSE3 && !FLAG_enable_sse3) return false; 3493ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == CMOV && !FLAG_enable_cmov) return false; 3503ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == RDTSC && !FLAG_enable_rdtsc) return false; 3513ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SAHF && !FLAG_enable_sahf) return false; 352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (supported_ & (V8_UINT64_C(1) << f)) != 0; 353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is currently enabled. 355d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static bool IsEnabled(CpuFeature f) { 356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (enabled_ & (V8_UINT64_C(1) << f)) != 0; 357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Enable a specified feature within a scope. 359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block class Scope BASE_EMBEDDED { 360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 362d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block explicit Scope(CpuFeature f) { 363d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block uint64_t mask = (V8_UINT64_C(1) << f); 364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(CpuFeatures::IsSupported(f)); 365d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block ASSERT(!Serializer::enabled() || (found_by_runtime_probing_ & mask) == 0); 366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block old_enabled_ = CpuFeatures::enabled_; 367d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block CpuFeatures::enabled_ |= mask; 368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Scope() { CpuFeatures::enabled_ = old_enabled_; } 370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint64_t old_enabled_; 372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 374d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block explicit Scope(CpuFeature f) {} 375a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Safe defaults include SSE2 and CMOV for X64. It is always available, if 379a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // anyone checks, but they shouldn't need to check. 380d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const uint64_t kDefaultCpuFeatures = (1 << SSE2 | 1 << CMOV); 381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static uint64_t supported_; 382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static uint64_t enabled_; 383d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static uint64_t found_by_runtime_probing_; 384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Assembler : public Malloced { 388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We check before assembling an instruction that there is sufficient 390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // space to write an instruction and its relocation information. 391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The relocation writer's position must be kGap bytes above the end of 392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the generated instructions. This leaves enough space for the 393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // longest possible x64 instruction, 15 bytes, and the longest possible 394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information encoding, RelocInfoWriter::kMaxLength == 16. 395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (There is a 15 byte limit on x64 instruction length that rules out some 396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // otherwise valid instructions.) 397a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This allows for a single, fast space check per instruction. 398a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kGap = 32; 399a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create an assembler. Instructions and relocation information are emitted 402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // into a buffer, with the instructions starting from the beginning and the 403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information starting from the end of the buffer. See CodeDesc 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for a detailed comment on the layout (globals.h). 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is NULL, the assembler allocates and grows its own 407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // buffer, and buffer_size determines the initial buffer size. The buffer is 408a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // owned by the assembler and deallocated upon destruction of the assembler. 409a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is not NULL, the assembler uses the provided buffer 411a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for code generation and assumes its size to be buffer_size. If the buffer 412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is too small, a fatal error occurs. No deallocation of the buffer is done 413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // upon destruction of the assembler. 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler(void* buffer, int buffer_size); 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Assembler(); 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // GetCode emits any pending (non-emitted) code and fills the descriptor 418a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // desc. GetCode() is idempotent; it returns the same result if no other 419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assembler functions are invoked in between GetCode() calls. 420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GetCode(CodeDesc* desc); 421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4223ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Read/Modify the code target in the relative branch/call instruction at pc. 4233ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // On the x64 architecture, we use relative jumps with a 32-bit displacement 4243ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // to jump to other Code objects in the Code space in the heap. 4253ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Jumps to C functions are done indirectly through a 64-bit register holding 4263ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // the absolute address of the target. 4273ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // These functions convert between absolute Addresses of Code objects and 4283ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // the relative displacements stored in the code. 429a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static inline Address target_address_at(Address pc); 430a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static inline void set_target_address_at(Address pc, Address target); 431d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 432d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This sets the branch destination (which is in the instruction on x64). 433d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This is for calls and branches within generated code. 434d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block inline static void set_target_at(Address instruction_payload, 435d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Address target) { 436d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block set_target_address_at(instruction_payload, target); 437d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 438d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 439d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This sets the branch destination (which is a load instruction on x64). 440d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This is for calls and branches to runtime code. 441d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block inline static void set_external_target_at(Address instruction_payload, 442d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Address target) { 443d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block *reinterpret_cast<Address*>(instruction_payload) = target; 444d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 445d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 4463ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block inline Handle<Object> code_target_object_handle_at(Address pc); 447d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // Number of bytes taken up by the branch target in the code. 448d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kCallTargetSize = 4; // Use 32-bit displacement. 449d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kExternalTargetSize = 8; // Use 64-bit absolute. 450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Distance between the address of the code target in the call instruction 4513ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // and the return address pushed on the stack. 4523ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block static const int kCallTargetAddressOffset = 4; // Use 32-bit displacement. 4533ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Distance between the start of the JS return sequence and where the 4543ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // 32-bit displacement of a near call would be, relative to the pushed 4553ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // return address. TODO: Use return sequence length instead. 4563ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; 4573ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block static const int kPatchReturnSequenceAddressOffset = 13 - 4; 4583ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // TODO(X64): Rename this, removing the "Real", after changing the above. 4593ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block static const int kRealPatchReturnSequenceAddressOffset = 2; 460d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 461d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // The x64 JS return sequence is padded with int3 to make it large 462d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // enough to hold a call instruction when the debugger patches it. 463d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kCallInstructionLength = 13; 464d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kJSReturnSequenceLength = 13; 465d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 466a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // --------------------------------------------------------------------------- 467a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code generation 468a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 469a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Function names correspond one-to-one to x64 instruction mnemonics. 470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Unless specified otherwise, instructions operate on 64-bit operands. 471a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 472a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If we need versions of an assembly instruction that operate on different 473a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // width arguments, we add a single-letter suffix specifying the width. 474a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This is done for the following instructions: mov, cmp, inc, dec, 475a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // add, sub, and test. 476a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // There are no versions of these instructions without the suffix. 477a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 8-bit (byte) operands/registers have a trailing 'b'. 478a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 16-bit (word) operands/registers have a trailing 'w'. 479a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 32-bit (doubleword) operands/registers use 'l'. 480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - Instructions on 64-bit (quadword) operands/registers use 'q'. 481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 482a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Some mnemonics, such as "and", are the same as C++ keywords. 483a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Naming conflicts with C++ keywords are resolved by adding a trailing '_'. 484a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Insert the smallest number of nop instructions 486a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // possible to align the pc offset to a multiple 487a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of m. m must be a power of 2. 488a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Align(int m); 489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 490a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Stack 491a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pushfq(); 492a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void popfq(); 493a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 494a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Immediate value); 495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Register src); 496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(const Operand& src); 497a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Label* label, RelocInfo::Mode relocation_mode); 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 499a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(Register dst); 500a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(const Operand& dst); 501a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 502a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void enter(Immediate size); 503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void leave(); 504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves 506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(Register dst, const Operand& src); 507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(Register dst, Immediate imm); 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movb(const Operand& dst, Register src); 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5103ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Move the low 16 bits of a 64-bit register value to a 16-bit 5113ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // memory location. 5123ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movw(const Operand& dst, Register src); 5133ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, Register src); 515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, const Operand& src); 516a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Register src); 517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Immediate imm); 518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Load a 32-bit immediate value, zero-extended to 64 bits. 519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(Register dst, Immediate imm32); 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move 64 bit register value to 64-bit memory location. 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(const Operand& dst, Register src); 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move 64 bit memory location to 64-bit register value. 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, const Operand& src); 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Register src); 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign extends immediate 32-bit value to 64 bits. 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Immediate x); 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move the offset of the label location relative to the current 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // position (after the move) to the destination. 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movl(const Operand& dst, Label* src); 531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Move sign extended immediate to memory location. 533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(const Operand& dst, Immediate value); 534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // New x64 instructions to load a 64-bit immediate into a register. 535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All 64-bit immediates must have a relocation mode. 536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, void* ptr, RelocInfo::Mode rmode); 537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, int64_t value, RelocInfo::Mode rmode); 538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, const char* s, RelocInfo::Mode rmode); 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves the address of the external reference into the register. 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, ExternalReference ext); 541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode); 542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5433ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movsxbq(Register dst, const Operand& src); 5443ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movsxwq(Register dst, const Operand& src); 545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsxlq(Register dst, Register src); 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsxlq(Register dst, const Operand& src); 547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxbq(Register dst, const Operand& src); 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxbl(Register dst, const Operand& src); 5493ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void movzxwq(Register dst, const Operand& src); 550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzxwl(Register dst, const Operand& src); 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 552d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke // Repeated moves. 553d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 554d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void repmovsb(); 555d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void repmovsw(); 556d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void repmovsl(); 557d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void repmovsq(); 558d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke 559a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // New x64 instruction to load from an immediate 64-bit pointer into RAX. 560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void load_rax(void* ptr, RelocInfo::Mode rmode); 561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void load_rax(ExternalReference ext); 562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional moves. 564a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovq(Condition cc, Register dst, Register src); 565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovq(Condition cc, Register dst, const Operand& src); 566a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovl(Condition cc, Register dst, Register src); 567a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmovl(Condition cc, Register dst, const Operand& src); 568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Exchange two registers 570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xchg(Register dst, Register src); 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Arithmetics 573a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, Register src) { 574f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke arithmetic_op_32(0x03, dst, src); 575a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 576a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 577a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, Immediate src) { 578a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x0, dst, src); 579a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 580a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(Register dst, const Operand& src) { 582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x03, dst, src); 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 584a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 585a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addl(const Operand& dst, Immediate src) { 586a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x0, dst, src); 587a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 588a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 589a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, Register src) { 590a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x03, dst, src); 591a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 592a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 593a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, const Operand& src) { 594a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x03, dst, src); 595a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 596a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 597a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(const Operand& dst, Register src) { 598a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x01, src, dst); 599a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 600a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(Register dst, Immediate src) { 602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x0, dst, src); 603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addq(const Operand& dst, Immediate src) { 606a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x0, dst, src); 607a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 608a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 60925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen void sbbl(Register dst, Register src) { 610f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke arithmetic_op_32(0x1b, dst, src); 61125f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen } 61225f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen 613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, Immediate src) { 614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x7, dst, src); 615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb_al(Immediate src); 618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, Register src) { 620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3A, dst, src); 621a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 622a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 623a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(Register dst, const Operand& src) { 624a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3A, dst, src); 625a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 626a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& dst, Register src) { 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x38, src, dst); 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& dst, Immediate src) { 632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x7, dst, src); 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& dst, Immediate src) { 636a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_16(0x7, dst, src); 637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 638a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, Immediate src) { 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_16(0x7, dst, src); 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, const Operand& src) { 644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x3B, dst, src); 645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(Register dst, Register src) { 648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x3B, dst, src); 649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& dst, Register src) { 652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_16(0x39, src, dst); 653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 654a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, Register src) { 656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x3B, dst, src); 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, const Operand& src) { 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x3B, dst, src); 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(const Operand& dst, Register src) { 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x39, src, dst); 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(Register dst, Immediate src) { 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x7, dst, src); 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpl(const Operand& dst, Immediate src) { 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x7, dst, src); 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, Register src) { 676a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3B, dst, src); 677a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 678a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 679a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, const Operand& src) { 680a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x3B, dst, src); 681a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 682a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 683a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(const Operand& dst, Register src) { 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x39, src, dst); 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(Register dst, Immediate src) { 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x7, dst, src); 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpq(const Operand& dst, Immediate src) { 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x7, dst, src); 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 695a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, Register src) { 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x23, dst, src); 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, const Operand& src) { 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x23, dst, src); 701a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, Register src) { 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x21, src, dst); 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, Immediate src) { 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x4, dst, src); 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, Immediate src) { 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x4, dst, src); 713a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void andl(Register dst, Immediate src) { 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x4, dst, src); 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7193ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void andl(Register dst, Register src) { 7203ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block arithmetic_op_32(0x23, dst, src); 7213ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 7223ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 7234515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke void andb(Register dst, Immediate src) { 7244515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke immediate_arithmetic_op_8(0x4, dst, src); 7254515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke } 7263ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decq(Register dst); 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decq(const Operand& dst); 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decl(Register dst); 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void decl(const Operand& dst); 7313ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void decb(Register dst); 7323ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void decb(const Operand& dst); 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign-extends rax into rdx:rax. 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cqo(); 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Sign-extends eax into edx:eax. 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cdq(); 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Divide rdx:rax by src. Quotient in rax, remainder in rdx. 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idivq(Register src); 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idivl(Register src); 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Signed multiply instructions. 745a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register src); // rdx:rax = rax * src. 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src); // dst = dst * src. 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, const Operand& src); // dst = dst * src. 748a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src, Immediate imm); // dst = src * imm. 7496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Signed 32-bit multiply instructions. 7506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void imull(Register dst, Register src); // dst = dst * src. 7516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void imull(Register dst, Register src, Immediate imm); // dst = src * imm. 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incq(Register dst); 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incq(const Operand& dst); 755a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void incl(const Operand& dst); 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void lea(Register dst, const Operand& src); 7586ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void leal(Register dst, const Operand& src); 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Multiply rax by src, put the result in rdx:rax. 761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mul(Register src); 762a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 763a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(Register dst); 764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(const Operand& dst); 765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void negl(Register dst); 766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 767a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(Register dst); 768a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(const Operand& dst); 7696ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void notl(Register dst); 770a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, Register src) { 772a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x0B, dst, src); 773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void orl(Register dst, Register src) { 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x0B, dst, src); 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, const Operand& src) { 780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x0B, dst, src); 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Register src) { 784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x09, src, dst); 785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, Immediate src) { 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x1, dst, src); 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7913ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void orl(Register dst, Immediate src) { 7923ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block immediate_arithmetic_op_32(0x1, dst, src); 7933ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 7943ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Immediate src) { 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x1, dst, src); 797a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7993ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void orl(const Operand& dst, Immediate src) { 8003ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block immediate_arithmetic_op_32(0x1, dst, src); 8013ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8023ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 8043ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void rcl(Register dst, Immediate imm8) { 8053ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x2); 8063ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8073ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 8083ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void rol(Register dst, Immediate imm8) { 8093ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x0); 8103ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8113ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 8123ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void rcr(Register dst, Immediate imm8) { 8133ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x3); 8143ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 8153ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 8163ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void ror(Register dst, Immediate imm8) { 8173ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block shift(dst, imm8, 0x1); 8183ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 819a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 820a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst:src left by cl bits, affecting only dst. 821a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shld(Register dst, Register src); 822a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 823a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts src:dst right by cl bits, affecting only dst. 824a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrd(Register dst, Register src); 825a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 826a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by shift_amount bits. 827a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifting by 1 is handled efficiently. 828a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sar(Register dst, Immediate shift_amount) { 829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x7); 830a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by shift_amount bits. 833a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifting by 1 is handled efficiently. 834a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sarl(Register dst, Immediate shift_amount) { 835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x7); 836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by cl % 64 bits. 839d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void sar_cl(Register dst) { 840a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x7); 841a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shifts dst right, duplicating sign bit, by cl % 64 bits. 844d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void sarl_cl(Register dst) { 845a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x7); 846a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 847a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 848a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shl(Register dst, Immediate shift_amount) { 849a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x4); 850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 852d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void shl_cl(Register dst) { 853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x4); 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 855a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 856d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void shll_cl(Register dst) { 857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x4); 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shll(Register dst, Immediate shift_amount) { 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x4); 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr(Register dst, Immediate shift_amount) { 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, shift_amount, 0x5); 866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 867a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 868d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void shr_cl(Register dst) { 869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift(dst, 0x5); 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 872d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void shrl_cl(Register dst) { 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, 0x5); 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrl(Register dst, Immediate shift_amount) { 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block shift_32(dst, shift_amount, 0x5); 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void store_rax(void* dst, RelocInfo::Mode mode); 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void store_rax(ExternalReference ref); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, Register src) { 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x2B, dst, src); 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, const Operand& src) { 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x2B, dst, src); 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(const Operand& dst, Register src) { 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x29, src, dst); 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(Register dst, Immediate src) { 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x5, dst, src); 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subq(const Operand& dst, Immediate src) { 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x5, dst, src); 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(Register dst, Register src) { 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x2B, dst, src); 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 907e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void subl(Register dst, const Operand& src) { 908e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke arithmetic_op_32(0x2B, dst, src); 909e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke } 910e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(const Operand& dst, Immediate src) { 912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x5, dst, src); 913a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subl(Register dst, Immediate src) { 916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_32(0x5, dst, src); 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 919a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subb(Register dst, Immediate src) { 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op_8(0x5, dst, src); 921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9233ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void testb(Register dst, Register src); 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testb(Register reg, Immediate mask); 925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testb(const Operand& op, Immediate mask); 926e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void testb(const Operand& op, Register reg); 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(Register dst, Register src); 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(Register reg, Immediate mask); 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testl(const Operand& op, Immediate mask); 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(const Operand& op, Register reg); 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(Register dst, Register src); 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void testq(Register dst, Immediate mask); 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, Register src) { 935d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block if (dst.code() == src.code()) { 936d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block arithmetic_op_32(0x33, dst, src); 937d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } else { 938d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block arithmetic_op(0x33, dst, src); 939d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 940a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 942a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xorl(Register dst, Register src) { 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op_32(0x33, dst, src); 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, const Operand& src) { 947a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x33, dst, src); 948a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 949a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 950a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, Register src) { 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block arithmetic_op(0x31, src, dst); 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 953a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, Immediate src) { 955a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x6, dst, src); 956a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 957a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, Immediate src) { 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block immediate_arithmetic_op(0x6, dst, src); 960a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 961a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 962a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bit operations. 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bt(const Operand& dst, Register src); 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bts(const Operand& dst, Register src); 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Miscellaneous 9673ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void clc(); 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cpuid(); 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void hlt(); 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void int3(); 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(); 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(int n); 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void rdtsc(); 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ret(int imm16); 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void setcc(Condition cc, Register reg); 976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 977a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label operations & relative jumps (PPUM Appendix D) 978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Takes a branch opcode (cc) and a label (L) and generates 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // either a backward branch or a forward branch and links it 981a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to the label fixup chain. Usage: 982a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 983a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label L; // unbound label 984a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // forward branch to unbound label 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // bind label to the current pc 986a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // backward branch to bound label 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // illegal: a label may be bound only once 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: The same Label can be used for forward and backward branches 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // but it may be bound only once. 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind(Label* L); // binds an unbound label L to the current code position 993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calls 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near relative 32-bit displacement, relative to next instruction. 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Label* L); 9973ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void call(Handle<Code> target, RelocInfo::Mode rmode); 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near absolute indirect, address in register 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Register adr); 1001a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1002a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Call near indirect 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(const Operand& operand); 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jumps 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump short or near relative. 10073ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block // Use a 32-bit signed displacement. 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Label* L); // unconditional jump to L 10093ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void jmp(Handle<Code> target, RelocInfo::Mode rmode); 1010a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1011a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump near absolute indirect (r64) 1012a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Register adr); 1013a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1014a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jump near absolute indirect (m64) 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(const Operand& src); 1016a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional jumps 1018a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void j(Condition cc, Label* L); 10193ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode); 1020a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Floating-point operations 1022a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld(int i); 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld1(); 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fldz(); 10266ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void fldpi(); 1027a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1028a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_s(const Operand& adr); 1029a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_d(const Operand& adr); 1030a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_s(const Operand& adr); 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_d(const Operand& adr); 10333ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fstp(int index); 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_s(const Operand& adr); 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_d(const Operand& adr); 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fist_s(const Operand& adr); 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_s(const Operand& adr); 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_d(const Operand& adr); 1042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisttp_s(const Operand& adr); 1044d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void fisttp_d(const Operand& adr); 1045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fabs(); 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fchs(); 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fadd(int i); 1050a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsub(int i); 1051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmul(int i); 1052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdiv(int i); 1053a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisub_s(const Operand& adr); 1055a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1056a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void faddp(int i = 1); 1057a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubp(int i = 1); 1058a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubrp(int i = 1); 1059a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmulp(int i = 1); 1060a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdivp(int i = 1); 1061a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem(); 1062a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem1(); 1063a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1064a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fxch(int i = 1); 1065a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fincstp(); 1066a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ffree(int i = 0); 1067a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1068a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ftst(); 1069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucomp(int i); 1070a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucompp(); 10713ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fucomi(int i); 10723ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fucomip(); 10733ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block 1074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcompp(); 1075a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnstsw_ax(); 1076a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fwait(); 1077a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnclex(); 1078a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1079a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsin(); 1080a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcos(); 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1082a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void frndint(); 1083a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1084a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sahf(); 1085a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1086a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // SSE2 instructions 10876ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movd(XMMRegister dst, Register src); 10886ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movd(Register dst, XMMRegister src); 10896ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movq(XMMRegister dst, Register src); 10906ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movq(Register dst, XMMRegister src); 10916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void extractps(Register dst, XMMRegister src, byte imm8); 10926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1093a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(const Operand& dst, XMMRegister src); 10946ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movsd(XMMRegister dst, XMMRegister src); 10956ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movsd(XMMRegister dst, const Operand& src); 1096a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1097a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttss2si(Register dst, const Operand& src); 1098a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttsd2si(Register dst, const Operand& src); 109925f6136652d8341ed047e7fc1a450af5bd218ea9Kristian Monsen void cvttsd2siq(Register dst, XMMRegister src); 1100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtlsi2sd(XMMRegister dst, const Operand& src); 1102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtlsi2sd(XMMRegister dst, Register src); 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtqsi2sd(XMMRegister dst, const Operand& src); 1104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtqsi2sd(XMMRegister dst, Register src); 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void cvtss2sd(XMMRegister dst, XMMRegister src); 11076ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addsd(XMMRegister dst, XMMRegister src); 1109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subsd(XMMRegister dst, XMMRegister src); 1110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mulsd(XMMRegister dst, XMMRegister src); 1111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void divsd(XMMRegister dst, XMMRegister src); 1112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1113402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu void xorpd(XMMRegister dst, XMMRegister src); 11146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void sqrtsd(XMMRegister dst, XMMRegister src); 1115402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu 1116402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu void comisd(XMMRegister dst, XMMRegister src); 1117402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu void ucomisd(XMMRegister dst, XMMRegister src); 1118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The first argument is the reg field, the second argument is the r/m field. 1120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, XMMRegister src); 1121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister reg, const Operand& adr); 1122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, Register src); 11236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void emit_sse_operand(Register dst, XMMRegister src); 1124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use either movsd or movlpd. 1126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movdbl(XMMRegister dst, const Operand& src); 1127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void movdbl(const Operand& dst, XMMRegister src); 1128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Debugging 1130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Print(); 1131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the code size generated from label to here. 1133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int SizeOfCodeGeneratedSince(Label* l) { return pc_offset() - l->pos(); } 1134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Mark address of the ExitJSFrame code. 1136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordJSReturn(); 1137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Record a comment relocation entry that can be used by a disassembler. 1139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use --debug_code to enable. 1140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordComment(const char* msg); 1141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordPosition(int pos); 1143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordStatementPosition(int pos); 1144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void WriteRecordedPositions(); 1145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1146d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block int pc_offset() const { return static_cast<int>(pc_ - buffer_); } 1147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_statement_position() const { return current_statement_position_; } 1148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_position() const { return current_position_; } 1149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if there is less than kGap bytes available in the buffer. 1151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If this is the case, we need to grow the buffer before emitting 1152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // an instruction or relocation information. 1153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline bool buffer_overflow() const { 1154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return pc_ >= reloc_info_writer.pos() - kGap; 1155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the number of bytes available in the buffer. 1158d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block inline int available_space() const { 1159d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block return static_cast<int>(reloc_info_writer.pos() - pc_); 1160d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 1161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Avoid overflows for displacements etc. 1163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMaximalBufferSize = 512*MB; 1164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMinimalBufferSize = 4*KB; 1165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* addr_at(int pos) { return buffer_ + pos; } 1168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte byte_at(int pos) { return buffer_[pos]; } 1169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t long_at(int pos) { 1170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return *reinterpret_cast<uint32_t*>(addr_at(pos)); 1171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void long_at_put(int pos, uint32_t x) { 1173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; 1174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code emission 1177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GrowBuffer(); 1178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit(byte x) { *pc_++ = x; } 1180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitl(uint32_t x); 1181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitq(uint64_t x, RelocInfo::Mode rmode); 1182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emitw(uint16_t x); 11833ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block inline void emit_code_target(Handle<Code> target, RelocInfo::Mode rmode); 1184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit(Immediate x) { emitl(x.value_); } 1185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of both register codes. 1188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set. 1190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(XMMRegister reg, Register rm_reg); 11916ded16be15dd865a9b21ea304d5273c8be299c87Steve Block inline void emit_rex_64(Register reg, XMMRegister rm_reg); 11926ded16be15dd865a9b21ea304d5273c8be299c87Steve Block inline void emit_rex_64(Register reg, Register rm_reg); 1193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the destination, index, and base register codes. 1196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is set. 1199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register reg, const Operand& op); 1200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(XMMRegister reg, const Operand& op); 1201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the register code. 1204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of register is used for REX.B. 1205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set and REX.R and REX.X are clear. 1206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(Register rm_reg); 1207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emits a REX prefix that encodes a 64-bit operand size and 1209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the top bit of the index and base register codes. 1210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of op's base register is used for REX.B, and the high 1211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bit of op's index register is used for REX.X. 1212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is set and REX.R clear. 1213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_64(const Operand& op); 1214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a REX prefix that only sets REX.W to choose a 64-bit operand size. 1216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_rex_64() { emit(0x48); } 1217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is clear. 1220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register reg, Register rm_reg); 1221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is cleared. 1225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register reg, const Operand& op); 1226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of rm_reg goes to REX.B. 1228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W, REX.R and REX.X are clear. 1229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(Register rm_reg); 1230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of base goes to REX.B and high bit of index to REX.X. 1232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W and REX.R are clear. 1233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_rex_32(const Operand& op); 1234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. 1236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // REX.W is cleared. If no REX bits are set, no byte is emitted. 1237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register reg, Register rm_reg); 1238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The high bit of reg is used for REX.R, the high bit of op's base 1240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is used for REX.B, and the high bit of op's index register 1241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is used for REX.X. REX.W is cleared. If no REX bits are set, nothing 1242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is emitted. 1243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register reg, const Operand& op); 1244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, Register), except that 1246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the registers are XMM registers. 1247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, XMMRegister base); 1248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, Register), except that 12506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // one of the registers is an XMM registers. 1251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, Register base); 1252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // As for emit_optional_rex_32(Register, Register), except that 12546ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // one of the registers is an XMM registers. 12556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block inline void emit_optional_rex_32(Register reg, XMMRegister base); 12566ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // As for emit_optional_rex_32(Register, const Operand&), except that 1258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the register is an XMM register. 1259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(XMMRegister reg, const Operand& op); 1260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Optionally do as emit_rex_32(Register) if the register number has 1262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the high bit set. 1263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(Register rm_reg); 1264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Optionally do as emit_rex_32(const Operand&) if the operand register 1266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // numbers have a high bit set. 1267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_optional_rex_32(const Operand& op); 1268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the ModR/M byte, and optionally the SIB byte and 1271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1- or 4-byte offset for a memory operand. Also encodes 1272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the second operand of the operation, a register or operation 1273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // subcode, into the reg field of the ModR/M byte. 1274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(Register reg, const Operand& adr) { 1275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit_operand(reg.low_bits(), adr); 1276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the ModR/M byte, and optionally the SIB byte and 1279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1- or 4-byte offset for a memory operand. Also used to encode 1280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a three-bit opcode extension into the ModR/M byte. 1281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(int rm, const Operand& adr); 1282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ModR/M byte with registers coded in the reg and rm_reg fields. 1284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_modrm(Register reg, Register rm_reg) { 1285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit(0xC0 | reg.low_bits() << 3 | rm_reg.low_bits()); 1286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a ModR/M byte with an operation subcode in the reg field and 1289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a register in the rm_reg field. 1290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_modrm(int code, Register rm_reg) { 1291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_uint3(code)); 1292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block emit(0xC0 | code << 3 | rm_reg.low_bits()); 1293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the code-object-relative offset of the label's position 1296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_code_relative_offset(Label* label); 1297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit machine code for one of the operations ADD, ADC, SUB, SBC, 1299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // AND, OR, XOR, or CMP. The encodings of these operations are all 1300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // similar, differing just in the opcode or in the reg field of the 1301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ModR/M byte. 1302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_16(byte opcode, Register reg, Register rm_reg); 1303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg); 1304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_32(byte opcode, Register reg, Register rm_reg); 1305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op_32(byte opcode, Register reg, const Operand& rm_reg); 1306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op(byte opcode, Register reg, Register rm_reg); 1307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg); 1308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op(byte subcode, Register dst, Immediate src); 1309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src); 1310a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a byte in memory or register. 1311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_8(byte subcode, 1312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_8(byte subcode, 1315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a word in memory or register. 1318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_16(byte subcode, 1319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_16(byte subcode, 1322a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1323a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operate on a 32-bit word in memory or register. 1325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_32(byte subcode, 1326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register dst, 1327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void immediate_arithmetic_op_32(byte subcode, 1329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const Operand& dst, 1330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Immediate src); 1331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit machine code for a shift operation. 1333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift(Register dst, Immediate shift_amount, int subcode); 1334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift_32(Register dst, Immediate shift_amount, int subcode); 1335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Shift dst by cl % 64 bits. 1336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift(Register dst, int subcode); 1337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shift_32(Register dst, int subcode); 1338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_farith(int b1, int b2, int i); 1340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // labels 1342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // void print(Label* L); 1343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind_to(Label* L, int pos); 1344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void link_to(Label* L, Label* appendix); 1345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // record reloc info for current pc_ 1347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); 1348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class CodePatcher; 1350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class EnsureSpace; 1351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class RegExpMacroAssemblerX64; 1352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code buffer: 1354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The buffer into which code and relocation info are generated. 1355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* buffer_; 1356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int buffer_size_; 1357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // True if the assembler owns the buffer, false if buffer is external. 1358a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool own_buffer_; 1359a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // A previously allocated buffer of kMinimalBufferSize bytes, or NULL. 1360a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static byte* spare_buffer_; 1361a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code generation 1363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* pc_; // the program counter; moves forward 1364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfoWriter reloc_info_writer; 1365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 13663ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block List< Handle<Code> > code_targets_; 1367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // push-pop elimination 1368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* last_pc_; 1369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // source position information 1371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_statement_position_; 1372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int current_position_; 1373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int written_statement_position_; 1374a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int written_position_; 1375a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Helper class that ensures that there is enough space for generating 1379a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// instructions and relocation information. The constructor makes 1380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// sure that there is enough space and (in debug mode) the destructor 1381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// checks that we did not generate too much. 1382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass EnsureSpace BASE_EMBEDDED { 1383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 1384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { 1385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (assembler_->buffer_overflow()) assembler_->GrowBuffer(); 1386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block space_before_ = assembler_->available_space(); 1388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~EnsureSpace() { 1393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int bytes_generated = space_before_ - assembler_->available_space(); 1394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(bytes_generated < assembler_->kGap); 1395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1397a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1398a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1399a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler* assembler_; 1400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int space_before_; 1402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 1406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_X64_ASSEMBLER_X64_H_ 1408