assembler-ia32.h revision 44f0eee88ff00398ff7f715fab053374d808c90d
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. 331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// Copyright 2011 the V8 project authors. All rights reserved. 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A light-weight IA32 Assembler. 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifndef V8_IA32_ASSEMBLER_IA32_H_ 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define V8_IA32_ASSEMBLER_IA32_H_ 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4044f0eee88ff00398ff7f715fab053374d808c90dSteve Block#include "isolate.h" 41d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block#include "serialize.h" 42d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CPU Registers. 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 1) We would prefer to use an enum, but enum values are assignment- 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// compatible with int, which has caused code-generation bugs. 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 2) We would prefer to use a class instead of a struct but we don't like 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the register initialization to depend on the particular initialization 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// order (which appears to be different on OS X, Linux, and Windows for the 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// installed versions of C++ we tried). Using a struct permits C-style 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "initialization". Also, the Register objects cannot be const as this 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// forces initialization stubs in MSVC, making us dependent on initialization 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// order. 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 3) By not using an enum, we are possibly preventing the compiler from 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// doing certain constant folds, which may significantly reduce the 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// code generated for some assembly instructions (because they boil down 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// to a few constants). If this is a problem, we could change the code 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// such that we use an enum in optimized mode, and the struct in debug 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// mode. This way we get the compile-time error checking in debug mode 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// and best performance in optimized code. 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct Register { 681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static const int kNumAllocatableRegisters = 6; 69b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const int kNumRegisters = 8; 70b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static inline const char* AllocationIndexToString(int index); 72b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static inline int ToAllocationIndex(Register reg); 74b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static inline Register FromAllocationIndex(int index); 76b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 77b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static Register from_code(int code) { 78b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Register r = { code }; 79b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return r; 80b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 81b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool is_valid() const { return 0 <= code_ && code_ < kNumRegisters; } 820d5e116f6aee03185f237311a943491bb079a768Kristian Monsen bool is(Register reg) const { return code_ == reg.code_; } 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // eax, ebx, ecx and edx are byte registers, the rest are not. 840d5e116f6aee03185f237311a943491bb079a768Kristian Monsen bool is_byte_register() const { return code_ <= 3; } 850d5e116f6aee03185f237311a943491bb079a768Kristian Monsen int code() const { 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 890d5e116f6aee03185f237311a943491bb079a768Kristian Monsen int bit() const { 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return 1 << code_; 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 943100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu // Unfortunately we can't make this private in a struct. 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 981e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register eax = { 0 }; 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register ecx = { 1 }; 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register edx = { 2 }; 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register ebx = { 3 }; 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register esp = { 4 }; 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register ebp = { 5 }; 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register esi = { 6 }; 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register edi = { 7 }; 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst Register no_reg = { -1 }; 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1101e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockinline const char* Register::AllocationIndexToString(int index) { 1111e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(index >= 0 && index < kNumAllocatableRegisters); 1121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // This is the mapping of allocation indices to registers. 1131e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const char* const kNames[] = { "eax", "ecx", "edx", "ebx", "esi", "edi" }; 1141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return kNames[index]; 1151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 1161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1181e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockinline int Register::ToAllocationIndex(Register reg) { 1191e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(reg.is_valid() && !reg.is(esp) && !reg.is(ebp)); 1201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return (reg.code() >= 6) ? reg.code() - 2 : reg.code(); 1211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 1221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1231e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockinline Register Register::FromAllocationIndex(int index) { 1251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(index >= 0 && index < kNumAllocatableRegisters); 1261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return (index >= 4) ? from_code(index + 2) : from_code(index); 1271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 1281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstruct XMMRegister { 131b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const int kNumAllocatableRegisters = 7; 132b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const int kNumRegisters = 8; 133b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 134b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static int ToAllocationIndex(XMMRegister reg) { 135b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(reg.code() != 0); 136b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return reg.code() - 1; 137b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 138b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 139b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static XMMRegister FromAllocationIndex(int index) { 140b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(index >= 0 && index < kNumAllocatableRegisters); 141b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return from_code(index + 1); 142b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 143b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 144b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const char* AllocationIndexToString(int index) { 145b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(index >= 0 && index < kNumAllocatableRegisters); 146b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const char* const names[] = { 147b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm1", 148b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm2", 149b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm3", 150b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm4", 151b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm5", 152b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm6", 153b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch "xmm7" 154b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch }; 155b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return names[index]; 156b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 157b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 158b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static XMMRegister from_code(int code) { 159b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch XMMRegister r = { code }; 160b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return r; 161b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 162b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 163b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool is_valid() const { return 0 <= code_ && code_ < kNumRegisters; } 164b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool is(XMMRegister reg) const { return code_ == reg.code_; } 1650d5e116f6aee03185f237311a943491bb079a768Kristian Monsen int code() const { 166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(is_valid()); 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return code_; 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int code_; 171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 173b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm0 = { 0 }; 175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm1 = { 1 }; 176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm2 = { 2 }; 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm3 = { 3 }; 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm4 = { 4 }; 179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm5 = { 5 }; 180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm6 = { 6 }; 181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst XMMRegister xmm7 = { 7 }; 182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 183b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 184b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochtypedef XMMRegister DoubleRegister; 185b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 186b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Condition { 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // any value < 0 is considered no_condition 189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_condition = -1, 190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block overflow = 0, 192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_overflow = 1, 193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block below = 2, 194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block above_equal = 3, 195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block equal = 4, 196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_equal = 5, 197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block below_equal = 6, 198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block above = 7, 199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block negative = 8, 200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block positive = 9, 201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block parity_even = 10, 202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block parity_odd = 11, 203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block less = 12, 204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block greater_equal = 13, 205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block less_equal = 14, 206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block greater = 15, 207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // aliases 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block carry = below, 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_carry = above_equal, 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block zero = equal, 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_zero = not_equal, 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block sign = negative, 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_sign = positive 215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Returns the equivalent of !cc. 219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Negation of the default no_condition (-1) results in a non-default 220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// no_condition value (-2). As long as tests for no_condition check 221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// for condition < 0, this will work as expected. 2229dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monseninline Condition NegateCondition(Condition cc) { 2239dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen return static_cast<Condition>(cc ^ 1); 2249dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen} 2259dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Corresponds to transposing the operands of a comparison. 228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Condition ReverseCondition(Condition cc) { 229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (cc) { 230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below: 231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above; 232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above: 233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below; 234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case above_equal: 235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return below_equal; 236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case below_equal: 237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return above_equal; 238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less: 239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater; 240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater: 241a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less; 242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case greater_equal: 243a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return less_equal; 244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case less_equal: 245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return greater_equal; 246a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block default: 247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return cc; 248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2519dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum Hint { 253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block no_hint = 0, 254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block not_taken = 0x2e, 255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block taken = 0x3e 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2589dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The result of negating a hint is as if the corresponding condition 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// were negated by NegateCondition. That is, no_hint is mapped to 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// itself and not_taken and taken are mapped to each other. 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockinline Hint NegateHint(Hint hint) { 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (hint == no_hint) 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ? no_hint 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block : ((hint == not_taken) ? taken : not_taken); 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 269a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Immediates 271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Immediate BASE_EMBEDDED { 273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline explicit Immediate(int x); 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline explicit Immediate(const ExternalReference& ext); 276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline explicit Immediate(Handle<Object> handle); 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline explicit Immediate(Smi* value); 278b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch inline explicit Immediate(Address addr); 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static Immediate CodeRelativeOffset(Label* label) { 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return Immediate(label); 282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_zero() const { return x_ == 0 && rmode_ == RelocInfo::NONE; } 285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_int8() const { 286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return -128 <= x_ && x_ < 128 && rmode_ == RelocInfo::NONE; 287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_int16() const { 289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return -32768 <= x_ && x_ < 32768 && rmode_ == RelocInfo::NONE; 290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline explicit Immediate(Label* value); 294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int x_; 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode_; 297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Machine instruction Operands 304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockenum ScaleFactor { 306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_1 = 0, 307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_2 = 1, 308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_4 = 2, 309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block times_8 = 3, 3104515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke times_int_size = times_4, 3114515c472dc3e5ed2448a564600976759e569a0a8Leon Clarke times_half_pointer_size = times_2, 312402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu times_pointer_size = times_4, 313402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu times_twice_pointer_size = times_8 314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 316a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 317a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Operand BASE_EMBEDDED { 318a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 319a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // reg 320a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block INLINE(explicit Operand(Register reg)); 321a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3226ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // XMM reg 3236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block INLINE(explicit Operand(XMMRegister xmm_reg)); 3246ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [disp/r] 326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block INLINE(explicit Operand(int32_t disp, RelocInfo::Mode rmode)); 327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // disp only must always be relocated 328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 329a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + disp/r] 330a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Operand(Register base, int32_t disp, 331a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode = RelocInfo::NONE); 332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [base + index*scale + disp/r] 334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Operand(Register base, 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Register index, 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp, 338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode = RelocInfo::NONE); 339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // [index*scale + disp/r] 341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Operand(Register index, 342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int32_t disp, 344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode = RelocInfo::NONE); 345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static Operand StaticVariable(const ExternalReference& ext) { 347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return Operand(reinterpret_cast<int32_t>(ext.address()), 348a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::EXTERNAL_REFERENCE); 349a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 351a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static Operand StaticArray(Register index, 352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ScaleFactor scale, 353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const ExternalReference& arr) { 354a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return Operand(index, scale, reinterpret_cast<int32_t>(arr.address()), 355a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::EXTERNAL_REFERENCE); 356a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 357a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 358b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static Operand Cell(Handle<JSGlobalPropertyCell> cell) { 359b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return Operand(reinterpret_cast<int32_t>(cell.location()), 360b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch RelocInfo::GLOBAL_PROPERTY_CELL); 361b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 362b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns true if this Operand is a wrapper for the specified register. 364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool is_reg(Register reg) const; 365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 367a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte buf_[6]; 368a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The number of bytes in buf_. 369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block unsigned int len_; 370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Only valid if len_ > 4. 371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo::Mode rmode_; 372a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 373a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the ModRM byte without an encoded 'reg' register. The 374a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // register is encoded later as part of the emit_operand operation. 375a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_modrm(int mod, Register rm); 376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_sib(ScaleFactor scale, Register index, Register base); 378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_disp8(int8_t disp); 379a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void set_dispr(int32_t disp, RelocInfo::Mode rmode); 380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class Assembler; 382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ----------------------------------------------------------------------------- 386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A Displacement describes the 32bit immediate field of an instruction which 387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// may be used together with a Label in order to refer to a yet unknown code 388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// position. Displacements stored in the instruction stream are used to describe 389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the instruction and to chain a list of instructions using the same Label. 390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A Displacement contains 2 different fields: 391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// next field: position of next displacement in the chain (0 = end of list) 393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// type field: instruction type 394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A next value of null (0) indicates the end of a chain (note that there can 396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// be no displacement at position zero, because there is always at least one 397a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// instruction byte before the displacement). 398a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 399a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Displacement _data field layout 400a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// |31.....2|1......0| 402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// [ next | type | 403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Displacement BASE_EMBEDDED { 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block enum Type { 407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block UNCONDITIONAL_JUMP, 408a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block CODE_RELATIVE, 409a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block OTHER 410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 411a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int data() const { return data_; } 413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Type type() const { return TypeField::decode(data_); } 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void next(Label* L) const { 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int n = NextField::decode(data_); 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block n > 0 ? L->link_to(n) : L->Unuse(); 417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 418a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void link_to(Label* L) { init(L, type()); } 419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit Displacement(int data) { data_ = data; } 421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Displacement(Label* L, Type type) { init(L, type); } 423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 424a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void print() { 425a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PrintF("%s (%x) ", (type() == UNCONDITIONAL_JUMP ? "jmp" : "[other]"), 426a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block NextField::decode(data_)); 427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 428a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 429a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 430a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int data_; 431a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 432a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block class TypeField: public BitField<Type, 0, 2> {}; 433a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block class NextField: public BitField<int, 2, 32-2> {}; 434a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 435a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void init(Label* L, Type type); 436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 437a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 438a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 439a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 440a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures keeps track of which features are supported by the target CPU. 441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Supported features must be enabled by a Scope before use. 442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Example: 443a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// if (CpuFeatures::IsSupported(SSE2)) { 444a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CpuFeatures::Scope fscope(SSE2); 445a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate SSE2 floating point code. 446a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } else { 447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// // Generate standard x87 floating point code. 448a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// } 44944f0eee88ff00398ff7f715fab053374d808c90dSteve Blockclass CpuFeatures { 450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 451b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Detect features of the target CPU. If the portable flag is set, 452b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // the method sets safe defaults if the serializer is enabled 453b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // (snapshots must be portable). 45444f0eee88ff00398ff7f715fab053374d808c90dSteve Block void Probe(bool portable); 45544f0eee88ff00398ff7f715fab053374d808c90dSteve Block void Clear() { supported_ = 0; } 456b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 457a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is supported by the target CPU. 45844f0eee88ff00398ff7f715fab053374d808c90dSteve Block bool IsSupported(CpuFeature f) const { 4593ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SSE2 && !FLAG_enable_sse2) return false; 4603ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == SSE3 && !FLAG_enable_sse3) return false; 461f87a203d89e1bbb6708282e0b64dbd13d59b723dBen Murdoch if (f == SSE4_1 && !FLAG_enable_sse4_1) return false; 4623ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == CMOV && !FLAG_enable_cmov) return false; 4633ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (f == RDTSC && !FLAG_enable_rdtsc) return false; 464a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (supported_ & (static_cast<uint64_t>(1) << f)) != 0; 465a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 466a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check whether a feature is currently enabled. 46744f0eee88ff00398ff7f715fab053374d808c90dSteve Block bool IsEnabled(CpuFeature f) const { 468a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (enabled_ & (static_cast<uint64_t>(1) << f)) != 0; 469a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Enable a specified feature within a scope. 471a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block class Scope BASE_EMBEDDED { 472a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 473a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 47444f0eee88ff00398ff7f715fab053374d808c90dSteve Block explicit Scope(CpuFeature f) 47544f0eee88ff00398ff7f715fab053374d808c90dSteve Block : cpu_features_(Isolate::Current()->cpu_features()), 47644f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate_(Isolate::Current()) { 477d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block uint64_t mask = static_cast<uint64_t>(1) << f; 47844f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(cpu_features_->IsSupported(f)); 47944f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(!Serializer::enabled() || 48044f0eee88ff00398ff7f715fab053374d808c90dSteve Block (cpu_features_->found_by_runtime_probing_ & mask) == 0); 48144f0eee88ff00398ff7f715fab053374d808c90dSteve Block old_enabled_ = cpu_features_->enabled_; 48244f0eee88ff00398ff7f715fab053374d808c90dSteve Block cpu_features_->enabled_ |= mask; 48344f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 48444f0eee88ff00398ff7f715fab053374d808c90dSteve Block ~Scope() { 48544f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT_EQ(Isolate::Current(), isolate_); 48644f0eee88ff00398ff7f715fab053374d808c90dSteve Block cpu_features_->enabled_ = old_enabled_; 487a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 488a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 489a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint64_t old_enabled_; 49044f0eee88ff00398ff7f715fab053374d808c90dSteve Block CpuFeatures* cpu_features_; 49144f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate* isolate_; 492a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#else 493a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 494d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block explicit Scope(CpuFeature f) {} 495a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 496a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 49744f0eee88ff00398ff7f715fab053374d808c90dSteve Block 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 49944f0eee88ff00398ff7f715fab053374d808c90dSteve Block CpuFeatures(); 50044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 50144f0eee88ff00398ff7f715fab053374d808c90dSteve Block uint64_t supported_; 50244f0eee88ff00398ff7f715fab053374d808c90dSteve Block uint64_t enabled_; 50344f0eee88ff00398ff7f715fab053374d808c90dSteve Block uint64_t found_by_runtime_probing_; 50444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 50544f0eee88ff00398ff7f715fab053374d808c90dSteve Block friend class Isolate; 50644f0eee88ff00398ff7f715fab053374d808c90dSteve Block 50744f0eee88ff00398ff7f715fab053374d808c90dSteve Block DISALLOW_COPY_AND_ASSIGN(CpuFeatures); 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 51144f0eee88ff00398ff7f715fab053374d808c90dSteve Blockclass Assembler : public AssemblerBase { 512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 513a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We check before assembling an instruction that there is sufficient 514a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // space to write an instruction and its relocation information. 515a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The relocation writer's position must be kGap bytes above the end of 516a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the generated instructions. This leaves enough space for the 517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // longest possible ia32 instruction, 15 bytes, and the longest possible 518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information encoding, RelocInfoWriter::kMaxLength == 16. 519a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (There is a 15 byte limit on ia32 instruction length that rules out some 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // otherwise valid instructions.) 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This allows for a single, fast space check per instruction. 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kGap = 32; 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 525a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Create an assembler. Instructions and relocation information are emitted 526a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // into a buffer, with the instructions starting from the beginning and the 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // relocation information starting from the end of the buffer. See CodeDesc 528a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for a detailed comment on the layout (globals.h). 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is NULL, the assembler allocates and grows its own 531a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // buffer, and buffer_size determines the initial buffer size. The buffer is 532a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // owned by the assembler and deallocated upon destruction of the assembler. 533a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the provided buffer is not NULL, the assembler uses the provided buffer 535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // for code generation and assumes its size to be buffer_size. If the buffer 536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is too small, a fatal error occurs. No deallocation of the buffer is done 537a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // upon destruction of the assembler. 538a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler(void* buffer, int buffer_size); 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~Assembler(); 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 54144f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Overrides the default provided by FLAG_debug_code. 54244f0eee88ff00398ff7f715fab053374d808c90dSteve Block void set_emit_debug_code(bool value) { emit_debug_code_ = value; } 54344f0eee88ff00398ff7f715fab053374d808c90dSteve Block 544a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // GetCode emits any pending (non-emitted) code and fills the descriptor 545a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // desc. GetCode() is idempotent; it returns the same result if no other 546a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Assembler functions are invoked in between GetCode() calls. 547a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GetCode(CodeDesc* desc); 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Read/Modify the code target in the branch/call instruction at pc. 550a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline static Address target_address_at(Address pc); 551a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline static void set_target_address_at(Address pc, Address target); 552a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 553d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This sets the branch destination (which is in the instruction on x86). 554d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This is for calls and branches within generated code. 555d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block inline static void set_target_at(Address instruction_payload, 556d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Address target) { 557d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block set_target_address_at(instruction_payload, target); 558d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 559d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 560d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This sets the branch destination (which is in the instruction on x86). 561d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block // This is for calls and branches to runtime code. 562d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block inline static void set_external_target_at(Address instruction_payload, 563d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block Address target) { 564d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block set_target_address_at(instruction_payload, target); 565d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block } 566d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 567d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kCallTargetSize = kPointerSize; 568d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kExternalTargetSize = kPointerSize; 569d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block 570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Distance between the address of the code target in the call instruction 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // and the return address 572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kCallTargetAddressOffset = kPointerSize; 573a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Distance between start of patched return sequence and the emitted address 574a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to jump to. 575a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kPatchReturnSequenceAddressOffset = 1; // JMP imm32. 576a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5777f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Distance between start of patched debug break slot and the emitted address 5787f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // to jump to. 5797f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch static const int kPatchDebugBreakSlotAddressOffset = 1; // JMP imm32. 5807f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 581d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kCallInstructionLength = 5; 582d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block static const int kJSReturnSequenceLength = 6; 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5847f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // The debug break slot must be able to contain a call instruction. 5857f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch static const int kDebugBreakSlotLength = kCallInstructionLength; 5867f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 587b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // One byte opcode for test eax,0xXXXXXXXX. 588b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kTestEaxByte = 0xA9; 589b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // One byte opcode for test al, 0xXX. 590b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kTestAlByte = 0xA8; 591b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // One byte opcode for nop. 592b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kNopByte = 0x90; 593b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 594b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // One byte opcode for a short unconditional jump. 595b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kJmpShortOpcode = 0xEB; 596b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // One byte prefix for a short conditional jump. 597b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kJccShortPrefix = 0x70; 598b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kJncShortOpcode = kJccShortPrefix | not_carry; 599b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static const byte kJcShortOpcode = kJccShortPrefix | carry; 600b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 601a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // --------------------------------------------------------------------------- 602a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code generation 603a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 604a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - function names correspond one-to-one to ia32 instruction mnemonics 605a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - unless specified otherwise, instructions operate on 32bit operands 606a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - instructions on 8bit (byte) operands/registers have a trailing '_b' 607a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - instructions on 16bit (word) operands/registers have a trailing '_w' 608a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // - naming conflicts with C++ keywords are resolved via a trailing '_' 609a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 610a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // NOTE ON INTERFACE: Currently, the interface is not very consistent 611a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // in the sense that some operations (e.g. mov()) can be called in more 612a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the one way to generate the same instruction: The Register argument 613a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // can in some cases be replaced with an Operand(Register) argument. 614a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This should be cleaned up and made more orthogonal. The questions 615a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is: should we always use Operands instead of Registers where an 616a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Operand is possible, or should we have a Register (overloaded) form 617a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // instead? We must be careful to make sure that the selected instruction 618a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is obvious from the parameters to avoid hard-to-find code generation 619a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bugs. 620a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 621a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Insert the smallest number of nop instructions 622a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // possible to align the pc offset to a multiple 623a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of m. m must be a power of 2. 624a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Align(int m); 6259dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Aligns code to something that's optimal for a jump target for the platform. 6269dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen void CodeTargetAlign(); 627a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 628a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Stack 629a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pushad(); 630a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void popad(); 631a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 632a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pushfd(); 633a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void popfd(); 634a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 635a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(const Immediate& x); 636b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void push_imm32(int32_t imm32); 637a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(Register src); 638a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void push(const Operand& src); 639a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 640a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(Register dst); 641a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void pop(const Operand& dst); 642a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 643a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void enter(const Immediate& size); 644a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void leave(); 645a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 646a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Moves 647a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov_b(Register dst, const Operand& src); 648a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov_b(const Operand& dst, int8_t imm8); 649a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov_b(const Operand& dst, Register src); 650a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 651a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov_w(Register dst, const Operand& src); 652a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov_w(const Operand& dst, Register src); 653a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 654a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(Register dst, int32_t imm32); 655a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(Register dst, const Immediate& x); 656a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(Register dst, Handle<Object> handle); 657a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(Register dst, const Operand& src); 658a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(Register dst, Register src); 659a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(const Operand& dst, const Immediate& x); 660a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(const Operand& dst, Handle<Object> handle); 661a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mov(const Operand& dst, Register src); 662a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 663a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsx_b(Register dst, const Operand& src); 664a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 665a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsx_w(Register dst, const Operand& src); 666a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 667a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzx_b(Register dst, const Operand& src); 668a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 669a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movzx_w(Register dst, const Operand& src); 670a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 671a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional moves 672a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmov(Condition cc, Register dst, int32_t imm32); 673a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmov(Condition cc, Register dst, Handle<Object> handle); 674a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmov(Condition cc, Register dst, const Operand& src); 675a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 6766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Flag management. 6776ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void cld(); 6786ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 679e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke // Repetitive string instructions. 680e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void rep_movs(); 6816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void rep_stos(); 682f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke void stos(); 683e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 684a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Exchange two registers 685a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xchg(Register dst, Register src); 686a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Arithmetics 688a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void adc(Register dst, int32_t imm32); 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void adc(Register dst, const Operand& src); 690a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 691a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void add(Register dst, const Operand& src); 692a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void add(const Operand& dst, const Immediate& x); 693a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 694a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, int32_t imm32); 69559151504615d929945dc59db37bf1166937748c6Steve Block void and_(Register dst, const Immediate& x); 696a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(Register dst, const Operand& src); 697a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& src, Register dst); 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void and_(const Operand& dst, const Immediate& x); 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 700a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb(const Operand& op, int8_t imm8); 701d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void cmpb(Register src, const Operand& dst); 702d91b9f7d46489a9ee00f9cb415630299c76a502bLeon Clarke void cmpb(const Operand& dst, Register src); 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpb_al(const Operand& op); 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw_ax(const Operand& op); 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmpw(const Operand& op, Immediate imm16); 706a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmp(Register reg, int32_t imm32); 707a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmp(Register reg, Handle<Object> handle); 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmp(Register reg, const Operand& op); 709a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmp(const Operand& op, const Immediate& imm); 710a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cmp(const Operand& op, Handle<Object> handle); 711a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 712a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void dec_b(Register dst); 7130d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void dec_b(const Operand& dst); 714a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 715a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void dec(Register dst); 716a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void dec(const Operand& dst); 717a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 718a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cdq(); 719a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 720a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void idiv(Register src); 721a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 722a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Signed multiply instructions. 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register src); // edx:eax = eax * src. 724a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, const Operand& src); // dst = dst * src. 725a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void imul(Register dst, Register src, int32_t imm32); // dst = src * imm32. 726a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void inc(Register dst); 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void inc(const Operand& dst); 729a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 730a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void lea(Register dst, const Operand& src); 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Unsigned multiply instruction. 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mul(Register src); // edx:eax = eax * reg. 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void neg(Register dst); 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 737a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void not_(Register dst); 738a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 739a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, int32_t imm32); 740a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(Register dst, const Operand& src); 741a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, Register src); 742a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void or_(const Operand& dst, const Immediate& x); 743a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 744a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void rcl(Register dst, uint8_t imm8); 745756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick void rcr(Register dst, uint8_t imm8); 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sar(Register dst, uint8_t imm8); 748d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void sar_cl(Register dst); 749a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 750a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sbb(Register dst, const Operand& src); 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shld(Register dst, const Operand& src); 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 754a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shl(Register dst, uint8_t imm8); 755d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block void shl_cl(Register dst); 756a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 757a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shrd(Register dst, const Operand& src); 758a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 759a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr(Register dst, uint8_t imm8); 760a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void shr_cl(Register dst); 761a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7623ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void subb(const Operand& dst, int8_t imm8); 763e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void subb(Register dst, const Operand& src); 764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sub(const Operand& dst, const Immediate& x); 765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sub(Register dst, const Operand& src); 766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sub(const Operand& dst, Register src); 767a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 768a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void test(Register reg, const Immediate& imm); 769a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void test(Register reg, const Operand& op); 770e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void test_b(Register reg, const Operand& op); 771a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void test(const Operand& op, const Immediate& imm); 7727f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch void test_b(const Operand& op, uint8_t imm8); 773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, int32_t imm32); 775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(Register dst, const Operand& src); 776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& src, Register dst); 777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void xor_(const Operand& dst, const Immediate& x); 778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bit operations. 780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bt(const Operand& dst, Register src); 781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bts(const Operand& dst, Register src); 782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Miscellaneous 784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void hlt(); 785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void int3(); 786a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void nop(); 787a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void rdtsc(); 788a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ret(int imm16); 789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label operations & relative jumps (PPUM Appendix D) 791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Takes a branch opcode (cc) and a label (L) and generates 793a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // either a backward branch or a forward branch and links it 794a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to the label fixup chain. Usage: 795a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 796a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Label L; // unbound label 797a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // forward branch to unbound label 798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // bind label to the current pc 799a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // j(cc, &L); // backward branch to bound label 800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // bind(&L); // illegal: a label may be bound only once 801a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 802a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Note: The same Label can be used for forward and backward branches 803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // but it may be bound only once. 804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind(Label* L); // binds an unbound label L to the current code position 8060d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void bind(NearLabel* L); 807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Calls 809a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Label* L); 810a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(byte* entry, RelocInfo::Mode rmode); 811a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(const Operand& adr); 812a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void call(Handle<Code> code, RelocInfo::Mode rmode); 813a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 814a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Jumps 815a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Label* L); // unconditional jump to L 816a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(byte* entry, RelocInfo::Mode rmode); 817a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(const Operand& adr); 818a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void jmp(Handle<Code> code, RelocInfo::Mode rmode); 819a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 8200d5e116f6aee03185f237311a943491bb079a768Kristian Monsen // Short jump 8210d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void jmp(NearLabel* L); 8220d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 823a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Conditional jumps 824a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void j(Condition cc, Label* L, Hint hint = no_hint); 825a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void j(Condition cc, byte* entry, RelocInfo::Mode rmode, Hint hint = no_hint); 826a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void j(Condition cc, Handle<Code> code, Hint hint = no_hint); 827a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 8280d5e116f6aee03185f237311a943491bb079a768Kristian Monsen // Conditional short jump 8290d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void j(Condition cc, NearLabel* L, Hint hint = no_hint); 8300d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 831a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Floating-point operations 832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld(int i); 833402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu void fstp(int i); 834a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld1(); 836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fldz(); 837402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu void fldpi(); 838b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void fldln2(); 839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 840a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_s(const Operand& adr); 841a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fld_d(const Operand& adr); 842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_s(const Operand& adr); 844a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fstp_d(const Operand& adr); 845402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu void fst_d(const Operand& adr); 846a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 847a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_s(const Operand& adr); 848a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fild_d(const Operand& adr); 849a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fist_s(const Operand& adr); 851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 852a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_s(const Operand& adr); 853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fistp_d(const Operand& adr); 854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 8556ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // The fisttp instructions require SSE3. 856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisttp_s(const Operand& adr); 857e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void fisttp_d(const Operand& adr); 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 859a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fabs(); 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fchs(); 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcos(); 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsin(); 863b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void fyl2x(); 864a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 865a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fadd(int i); 866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsub(int i); 867a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmul(int i); 868a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdiv(int i); 869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fisub_s(const Operand& adr); 871a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 872a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void faddp(int i = 1); 873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubp(int i = 1); 874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fsubrp(int i = 1); 875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fmulp(int i = 1); 876a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fdivp(int i = 1); 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem(); 878a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fprem1(); 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 880a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fxch(int i = 1); 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fincstp(); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ffree(int i = 0); 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void ftst(); 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucomp(int i); 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fucompp(); 8873ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fucomi(int i); 8883ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block void fucomip(); 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fcompp(); 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnstsw_ax(); 891a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fwait(); 892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void fnclex(); 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 894a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void frndint(); 895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void sahf(); 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void setcc(Condition cc, Register reg); 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cpuid(); 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // SSE2 instructions 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttss2si(Register dst, const Operand& src); 903a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvttsd2si(Register dst, const Operand& src); 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void cvtsi2sd(XMMRegister dst, const Operand& src); 9066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void cvtss2sd(XMMRegister dst, XMMRegister src); 90744f0eee88ff00398ff7f715fab053374d808c90dSteve Block void cvtsd2ss(XMMRegister dst, XMMRegister src); 908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void addsd(XMMRegister dst, XMMRegister src); 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void subsd(XMMRegister dst, XMMRegister src); 911a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void mulsd(XMMRegister dst, XMMRegister src); 912a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void divsd(XMMRegister dst, XMMRegister src); 913e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void xorpd(XMMRegister dst, XMMRegister src); 9146ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void sqrtsd(XMMRegister dst, XMMRegister src); 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9160d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void andpd(XMMRegister dst, XMMRegister src); 9170d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 9186ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void ucomisd(XMMRegister dst, XMMRegister src); 9196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movmskpd(Register dst, XMMRegister src); 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9210d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void cmpltsd(XMMRegister dst, XMMRegister src); 9220d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 9230d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void movaps(XMMRegister dst, XMMRegister src); 9240d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 925e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void movdqa(XMMRegister dst, const Operand& src); 926e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void movdqa(const Operand& dst, XMMRegister src); 927e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void movdqu(XMMRegister dst, const Operand& src); 928e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke void movdqu(const Operand& dst, XMMRegister src); 929e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use either movsd or movlpd. 931a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movdbl(XMMRegister dst, const Operand& src); 932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movdbl(const Operand& dst, XMMRegister src); 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movd(XMMRegister dst, const Operand& src); 935b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void movd(const Operand& src, XMMRegister dst); 9366ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void movsd(XMMRegister dst, XMMRegister src); 9376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 93844f0eee88ff00398ff7f715fab053374d808c90dSteve Block void movss(XMMRegister dst, const Operand& src); 93944f0eee88ff00398ff7f715fab053374d808c90dSteve Block void movss(const Operand& src, XMMRegister dst); 94044f0eee88ff00398ff7f715fab053374d808c90dSteve Block void movss(XMMRegister dst, XMMRegister src); 94144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 942b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void pand(XMMRegister dst, XMMRegister src); 9436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void pxor(XMMRegister dst, XMMRegister src); 944b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void por(XMMRegister dst, XMMRegister src); 9456ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void ptest(XMMRegister dst, XMMRegister src); 9466ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 947b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void psllq(XMMRegister reg, int8_t shift); 948b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void psllq(XMMRegister dst, XMMRegister src); 949b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void psrlq(XMMRegister reg, int8_t shift); 950b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void psrlq(XMMRegister dst, XMMRegister src); 951b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void pshufd(XMMRegister dst, XMMRegister src, int8_t shuffle); 952b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void pextrd(const Operand& dst, XMMRegister src, int8_t offset); 9531e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block void pinsrd(XMMRegister dst, const Operand& src, int8_t offset); 9540d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 9557f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Parallel XMM operations. 9567f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch void movntdqa(XMMRegister src, const Operand& dst); 9577f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch void movntdq(const Operand& dst, XMMRegister src); 9587f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Prefetch src position into cache level. 9597f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Level 1, 2 or 3 specifies CPU cache level. Level 0 specifies a 9607f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // non-temporal 9617f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch void prefetch(const Operand& src, int level); 9627f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // TODO(lrn): Need SFENCE for movnt? 9637f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Debugging 965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void Print(); 966a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 967a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the code size generated from label to here. 968a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int SizeOfCodeGeneratedSince(Label* l) { return pc_offset() - l->pos(); } 969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 970a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Mark address of the ExitJSFrame code. 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordJSReturn(); 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9737f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Mark address of a debug break slot. 9747f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch void RecordDebugBreakSlot(); 9757f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 976a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Record a comment relocation entry that can be used by a disassembler. 977e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Use --code-comments to enable, or provide "force = true" flag to always 978e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // write a comment. 979e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch void RecordComment(const char* msg, bool force = false); 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 981b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Writes a single byte or word of data in the code stream. Used for 982b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // inline tables, e.g., jump-tables. 983b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void db(uint8_t data); 984b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch void dd(uint32_t data); 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9860d5e116f6aee03185f237311a943491bb079a768Kristian Monsen int pc_offset() const { return pc_ - buffer_; } 987a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if there is less than kGap bytes available in the buffer. 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If this is the case, we need to grow the buffer before emitting 990a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // an instruction or relocation information. 991a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; } 992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the number of bytes available in the buffer. 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline int available_space() const { return reloc_info_writer.pos() - pc_; } 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 9967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch static bool IsNop(Address addr) { return *addr == 0x90; } 9977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 9983e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu PositionsRecorder* positions_recorder() { return &positions_recorder_; } 9993e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 1000e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int relocation_writer_size() { 1001e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return (buffer_ + buffer_size_) - reloc_info_writer.pos(); 1002e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1003e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1004a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Avoid overflows for displacements etc. 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMaximalBufferSize = 512*MB; 1006a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const int kMinimalBufferSize = 4*KB; 1007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block protected: 100944f0eee88ff00398ff7f715fab053374d808c90dSteve Block bool emit_debug_code() const { return emit_debug_code_; } 101044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 1011a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(XMMRegister dst, const Operand& src); 1012a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void movsd(const Operand& dst, XMMRegister src); 1013a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1014a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister reg, const Operand& adr); 1015a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_sse_operand(XMMRegister dst, XMMRegister src); 10166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block void emit_sse_operand(Register dst, XMMRegister src); 1017a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 101844f0eee88ff00398ff7f715fab053374d808c90dSteve Block byte* addr_at(int pos) { return buffer_ + pos; } 101944f0eee88ff00398ff7f715fab053374d808c90dSteve Block 1020b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch private: 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte byte_at(int pos) { return buffer_[pos]; } 10220d5e116f6aee03185f237311a943491bb079a768Kristian Monsen void set_byte_at(int pos, byte value) { buffer_[pos] = value; } 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t long_at(int pos) { 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return *reinterpret_cast<uint32_t*>(addr_at(pos)); 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1026a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void long_at_put(int pos, uint32_t x) { 1027a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; 1028a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1029a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1030a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code emission 1031a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void GrowBuffer(); 1032a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit(uint32_t x); 1033a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit(Handle<Object> handle); 1034a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit(uint32_t x, RelocInfo::Mode rmode); 1035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit(const Immediate& x); 1036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_w(const Immediate& x); 1037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1038a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit the code-object-relative offset of the label's position 1039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_code_relative_offset(Label* label); 1040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // instruction generation 1042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_arith_b(int op1, int op2, Register dst, int imm8); 1043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Emit a basic arithmetic instruction (i.e. first byte of the family is 0x81) 1045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // with a given destination expression and an immediate operand. It attempts 1046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to use the shortest encoding possible. 1047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // sel specifies the /n in the modrm byte (see the Intel PRM). 1048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_arith(int sel, Operand dst, const Immediate& x); 1049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1050a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_operand(Register reg, const Operand& adr); 1051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void emit_farith(int b1, int b2, int i); 1053a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // labels 1055a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void print(Label* L); 1056a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void bind_to(Label* L, int pos); 1057a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1058a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // displacements 1059a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline Displacement disp_at(Label* L); 1060a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void disp_at_put(Label* L, Displacement disp); 1061a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block inline void emit_disp(Label* L, Displacement::Type type); 1062a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1063a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // record reloc info for current pc_ 1064a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); 1065a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1066a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class CodePatcher; 1067a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block friend class EnsureSpace; 1068a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Code buffer: 1070a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The buffer into which code and relocation info are generated. 1071a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* buffer_; 1072a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int buffer_size_; 1073a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // True if the assembler owns the buffer, false if buffer is external. 1074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool own_buffer_; 1075a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1076a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // code generation 1077a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* pc_; // the program counter; moves forward 1078a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfoWriter reloc_info_writer; 1079a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1080a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // push-pop elimination 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block byte* last_pc_; 1082a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 10833e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu PositionsRecorder positions_recorder_; 10843e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 108544f0eee88ff00398ff7f715fab053374d808c90dSteve Block bool emit_debug_code_; 108644f0eee88ff00398ff7f715fab053374d808c90dSteve Block 10873e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu friend class PositionsRecorder; 1088a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1089a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1090a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1091a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Helper class that ensures that there is enough space for generating 1092a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// instructions and relocation information. The constructor makes 1093a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// sure that there is enough space and (in debug mode) the destructor 1094a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// checks that we did not generate too much. 1095a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass EnsureSpace BASE_EMBEDDED { 1096a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 1097a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { 1098a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (assembler_->overflow()) assembler_->GrowBuffer(); 1099a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block space_before_ = assembler_->available_space(); 1101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ~EnsureSpace() { 1106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int bytes_generated = space_before_ - assembler_->available_space(); 1107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(bytes_generated < assembler_->kGap); 1108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 1112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Assembler* assembler_; 1113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int space_before_; 1115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 1117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 1119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_IA32_ASSEMBLER_IA32_H_ 1121