ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1 | // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 2 | // All Rights Reserved. |
| 3 | // |
ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 4 | // Redistribution and use in source and binary forms, with or without |
| 5 | // modification, are permitted provided that the following conditions are |
| 6 | // met: |
| 7 | // |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 8 | // - Redistributions of source code must retain the above copyright notice, |
| 9 | // this list of conditions and the following disclaimer. |
ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 10 | // |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 11 | // - Redistribution in binary form must reproduce the above copyright |
| 12 | // notice, this list of conditions and the following disclaimer in the |
| 13 | // documentation and/or other materials provided with the distribution. |
| 14 | // |
| 15 | // - Neither the name of Sun Microsystems or the names of contributors may |
| 16 | // be used to endorse or promote products derived from this software without |
| 17 | // specific prior written permission. |
| 18 | // |
| 19 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 30 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 31 | // The original source code covered by the above license above has been |
| 32 | // modified significantly by Google Inc. |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 33 | // Copyright 2012 the V8 project authors. All rights reserved. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 34 | |
| 35 | // A lightweight X64 Assembler. |
| 36 | |
| 37 | #ifndef V8_X64_ASSEMBLER_X64_H_ |
| 38 | #define V8_X64_ASSEMBLER_X64_H_ |
| 39 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 40 | #include "serialize.h" |
| 41 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 42 | namespace v8 { |
| 43 | namespace internal { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 44 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 45 | // Utility functions |
| 46 | |
| 47 | // Test whether a 64-bit value is in a specific range. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 48 | inline bool is_uint32(int64_t x) { |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 49 | static const uint64_t kMaxUInt32 = V8_UINT64_C(0xffffffff); |
| 50 | return static_cast<uint64_t>(x) <= kMaxUInt32; |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 51 | } |
| 52 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 53 | inline bool is_int32(int64_t x) { |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 54 | static const int64_t kMinInt32 = -V8_INT64_C(0x80000000); |
| 55 | return is_uint32(x - kMinInt32); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 56 | } |
| 57 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 58 | inline bool uint_is_int32(uint64_t x) { |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 59 | static const uint64_t kMaxInt32 = V8_UINT64_C(0x7fffffff); |
| 60 | return x <= kMaxInt32; |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 61 | } |
| 62 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 63 | inline bool is_uint32(uint64_t x) { |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 64 | static const uint64_t kMaxUInt32 = V8_UINT64_C(0xffffffff); |
| 65 | return x <= kMaxUInt32; |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 66 | } |
| 67 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 68 | // CPU Registers. |
| 69 | // |
| 70 | // 1) We would prefer to use an enum, but enum values are assignment- |
| 71 | // compatible with int, which has caused code-generation bugs. |
| 72 | // |
| 73 | // 2) We would prefer to use a class instead of a struct but we don't like |
| 74 | // the register initialization to depend on the particular initialization |
| 75 | // order (which appears to be different on OS X, Linux, and Windows for the |
| 76 | // installed versions of C++ we tried). Using a struct permits C-style |
| 77 | // "initialization". Also, the Register objects cannot be const as this |
| 78 | // forces initialization stubs in MSVC, making us dependent on initialization |
| 79 | // order. |
| 80 | // |
| 81 | // 3) By not using an enum, we are possibly preventing the compiler from |
| 82 | // doing certain constant folds, which may significantly reduce the |
| 83 | // code generated for some assembly instructions (because they boil down |
| 84 | // to a few constants). If this is a problem, we could change the code |
| 85 | // such that we use an enum in optimized mode, and the struct in debug |
| 86 | // mode. This way we get the compile-time error checking in debug mode |
| 87 | // and best performance in optimized code. |
| 88 | // |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 89 | |
| 90 | struct Register { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 91 | // The non-allocatable registers are: |
| 92 | // rsp - stack pointer |
| 93 | // rbp - frame pointer |
| 94 | // rsi - context register |
| 95 | // r10 - fixed scratch register |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 96 | // r12 - smi constant register |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 97 | // r13 - root register |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 98 | static const int kMaxNumAllocatableRegisters = 10; |
| 99 | static int NumAllocatableRegisters() { |
| 100 | return kMaxNumAllocatableRegisters; |
| 101 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 102 | static const int kNumRegisters = 16; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 103 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 104 | static int ToAllocationIndex(Register reg) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 105 | return kAllocationIndexByRegisterCode[reg.code()]; |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | static Register FromAllocationIndex(int index) { |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 109 | ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 110 | Register result = { kRegisterCodeByAllocationIndex[index] }; |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 111 | return result; |
| 112 | } |
| 113 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 114 | static const char* AllocationIndexToString(int index) { |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 115 | ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 116 | const char* const names[] = { |
| 117 | "rax", |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 118 | "rbx", |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 119 | "rdx", |
| 120 | "rcx", |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 121 | "rdi", |
| 122 | "r8", |
| 123 | "r9", |
| 124 | "r11", |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 125 | "r14", |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 126 | "r15" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 127 | }; |
| 128 | return names[index]; |
| 129 | } |
| 130 | |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 131 | static Register from_code(int code) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 132 | Register r = { code }; |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 133 | return r; |
| 134 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 135 | bool is_valid() const { return 0 <= code_ && code_ < kNumRegisters; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 136 | bool is(Register reg) const { return code_ == reg.code_; } |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 137 | // rax, rbx, rcx and rdx are byte registers, the rest are not. |
| 138 | bool is_byte_register() const { return code_ <= 3; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 139 | int code() const { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 140 | ASSERT(is_valid()); |
| 141 | return code_; |
| 142 | } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 143 | int bit() const { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 144 | return 1 << code_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 145 | } |
| 146 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 147 | // Return the high bit of the register code as a 0 or 1. Used often |
| 148 | // when constructing the REX prefix byte. |
| 149 | int high_bit() const { |
| 150 | return code_ >> 3; |
| 151 | } |
| 152 | // Return the 3 low bits of the register code. Used when encoding registers |
| 153 | // in modR/M, SIB, and opcode bytes. |
| 154 | int low_bits() const { |
| 155 | return code_ & 0x7; |
| 156 | } |
| 157 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 158 | // Unfortunately we can't make this private in a struct when initializing |
| 159 | // by assignment. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 160 | int code_; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 161 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 162 | private: |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 163 | static const int kRegisterCodeByAllocationIndex[kMaxNumAllocatableRegisters]; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 164 | static const int kAllocationIndexByRegisterCode[kNumRegisters]; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 165 | }; |
| 166 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 167 | const int kRegister_rax_Code = 0; |
| 168 | const int kRegister_rcx_Code = 1; |
| 169 | const int kRegister_rdx_Code = 2; |
| 170 | const int kRegister_rbx_Code = 3; |
| 171 | const int kRegister_rsp_Code = 4; |
| 172 | const int kRegister_rbp_Code = 5; |
| 173 | const int kRegister_rsi_Code = 6; |
| 174 | const int kRegister_rdi_Code = 7; |
| 175 | const int kRegister_r8_Code = 8; |
| 176 | const int kRegister_r9_Code = 9; |
| 177 | const int kRegister_r10_Code = 10; |
| 178 | const int kRegister_r11_Code = 11; |
| 179 | const int kRegister_r12_Code = 12; |
| 180 | const int kRegister_r13_Code = 13; |
| 181 | const int kRegister_r14_Code = 14; |
| 182 | const int kRegister_r15_Code = 15; |
| 183 | const int kRegister_no_reg_Code = -1; |
| 184 | |
| 185 | const Register rax = { kRegister_rax_Code }; |
| 186 | const Register rcx = { kRegister_rcx_Code }; |
| 187 | const Register rdx = { kRegister_rdx_Code }; |
| 188 | const Register rbx = { kRegister_rbx_Code }; |
| 189 | const Register rsp = { kRegister_rsp_Code }; |
| 190 | const Register rbp = { kRegister_rbp_Code }; |
| 191 | const Register rsi = { kRegister_rsi_Code }; |
| 192 | const Register rdi = { kRegister_rdi_Code }; |
| 193 | const Register r8 = { kRegister_r8_Code }; |
| 194 | const Register r9 = { kRegister_r9_Code }; |
| 195 | const Register r10 = { kRegister_r10_Code }; |
| 196 | const Register r11 = { kRegister_r11_Code }; |
| 197 | const Register r12 = { kRegister_r12_Code }; |
| 198 | const Register r13 = { kRegister_r13_Code }; |
| 199 | const Register r14 = { kRegister_r14_Code }; |
| 200 | const Register r15 = { kRegister_r15_Code }; |
| 201 | const Register no_reg = { kRegister_no_reg_Code }; |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 202 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 203 | #ifdef _WIN64 |
| 204 | // Windows calling convention |
danno@chromium.org | 6b0169a | 2013-04-26 15:48:26 +0000 | [diff] [blame] | 205 | const Register arg_reg_1 = { kRegister_rcx_Code }; |
| 206 | const Register arg_reg_2 = { kRegister_rdx_Code }; |
| 207 | const Register arg_reg_3 = { kRegister_r8_Code }; |
| 208 | const Register arg_reg_4 = { kRegister_r9_Code }; |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 209 | #else |
| 210 | // AMD64 calling convention |
danno@chromium.org | 6b0169a | 2013-04-26 15:48:26 +0000 | [diff] [blame] | 211 | const Register arg_reg_1 = { kRegister_rdi_Code }; |
| 212 | const Register arg_reg_2 = { kRegister_rsi_Code }; |
| 213 | const Register arg_reg_3 = { kRegister_rdx_Code }; |
| 214 | const Register arg_reg_4 = { kRegister_rcx_Code }; |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 215 | #endif // _WIN64 |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 216 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 217 | struct XMMRegister { |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 218 | static const int kMaxNumRegisters = 16; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 219 | static const int kMaxNumAllocatableRegisters = 15; |
| 220 | static int NumAllocatableRegisters() { |
| 221 | return kMaxNumAllocatableRegisters; |
| 222 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 223 | |
| 224 | static int ToAllocationIndex(XMMRegister reg) { |
| 225 | ASSERT(reg.code() != 0); |
| 226 | return reg.code() - 1; |
| 227 | } |
| 228 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 229 | static XMMRegister FromAllocationIndex(int index) { |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 230 | ASSERT(0 <= index && index < kMaxNumAllocatableRegisters); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 231 | XMMRegister result = { index + 1 }; |
| 232 | return result; |
| 233 | } |
| 234 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 235 | static const char* AllocationIndexToString(int index) { |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 236 | ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 237 | const char* const names[] = { |
| 238 | "xmm1", |
| 239 | "xmm2", |
| 240 | "xmm3", |
| 241 | "xmm4", |
| 242 | "xmm5", |
| 243 | "xmm6", |
| 244 | "xmm7", |
| 245 | "xmm8", |
| 246 | "xmm9", |
| 247 | "xmm10", |
| 248 | "xmm11", |
| 249 | "xmm12", |
| 250 | "xmm13", |
| 251 | "xmm14", |
| 252 | "xmm15" |
| 253 | }; |
| 254 | return names[index]; |
| 255 | } |
| 256 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 257 | static XMMRegister from_code(int code) { |
| 258 | ASSERT(code >= 0); |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 259 | ASSERT(code < kMaxNumRegisters); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 260 | XMMRegister r = { code }; |
| 261 | return r; |
| 262 | } |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 263 | bool is_valid() const { return 0 <= code_ && code_ < kMaxNumRegisters; } |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 264 | bool is(XMMRegister reg) const { return code_ == reg.code_; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 265 | int code() const { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 266 | ASSERT(is_valid()); |
| 267 | return code_; |
| 268 | } |
| 269 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 270 | // Return the high bit of the register code as a 0 or 1. Used often |
| 271 | // when constructing the REX prefix byte. |
| 272 | int high_bit() const { |
| 273 | return code_ >> 3; |
| 274 | } |
| 275 | // Return the 3 low bits of the register code. Used when encoding registers |
| 276 | // in modR/M, SIB, and opcode bytes. |
| 277 | int low_bits() const { |
| 278 | return code_ & 0x7; |
| 279 | } |
| 280 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 281 | int code_; |
| 282 | }; |
| 283 | |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 284 | const XMMRegister xmm0 = { 0 }; |
| 285 | const XMMRegister xmm1 = { 1 }; |
| 286 | const XMMRegister xmm2 = { 2 }; |
| 287 | const XMMRegister xmm3 = { 3 }; |
| 288 | const XMMRegister xmm4 = { 4 }; |
| 289 | const XMMRegister xmm5 = { 5 }; |
| 290 | const XMMRegister xmm6 = { 6 }; |
| 291 | const XMMRegister xmm7 = { 7 }; |
| 292 | const XMMRegister xmm8 = { 8 }; |
| 293 | const XMMRegister xmm9 = { 9 }; |
| 294 | const XMMRegister xmm10 = { 10 }; |
| 295 | const XMMRegister xmm11 = { 11 }; |
| 296 | const XMMRegister xmm12 = { 12 }; |
| 297 | const XMMRegister xmm13 = { 13 }; |
| 298 | const XMMRegister xmm14 = { 14 }; |
| 299 | const XMMRegister xmm15 = { 15 }; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 300 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 301 | |
| 302 | typedef XMMRegister DoubleRegister; |
| 303 | |
| 304 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 305 | enum Condition { |
| 306 | // any value < 0 is considered no_condition |
| 307 | no_condition = -1, |
| 308 | |
| 309 | overflow = 0, |
| 310 | no_overflow = 1, |
| 311 | below = 2, |
| 312 | above_equal = 3, |
| 313 | equal = 4, |
| 314 | not_equal = 5, |
| 315 | below_equal = 6, |
| 316 | above = 7, |
| 317 | negative = 8, |
| 318 | positive = 9, |
| 319 | parity_even = 10, |
| 320 | parity_odd = 11, |
| 321 | less = 12, |
| 322 | greater_equal = 13, |
| 323 | less_equal = 14, |
| 324 | greater = 15, |
| 325 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 326 | // Fake conditions that are handled by the |
| 327 | // opcodes using them. |
| 328 | always = 16, |
| 329 | never = 17, |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 330 | // aliases |
| 331 | carry = below, |
| 332 | not_carry = above_equal, |
| 333 | zero = equal, |
| 334 | not_zero = not_equal, |
| 335 | sign = negative, |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 336 | not_sign = positive, |
| 337 | last_condition = greater |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 338 | }; |
| 339 | |
| 340 | |
| 341 | // Returns the equivalent of !cc. |
| 342 | // Negation of the default no_condition (-1) results in a non-default |
| 343 | // no_condition value (-2). As long as tests for no_condition check |
| 344 | // for condition < 0, this will work as expected. |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 345 | inline Condition NegateCondition(Condition cc) { |
| 346 | return static_cast<Condition>(cc ^ 1); |
| 347 | } |
| 348 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 349 | |
| 350 | // Corresponds to transposing the operands of a comparison. |
| 351 | inline Condition ReverseCondition(Condition cc) { |
| 352 | switch (cc) { |
| 353 | case below: |
| 354 | return above; |
| 355 | case above: |
| 356 | return below; |
| 357 | case above_equal: |
| 358 | return below_equal; |
| 359 | case below_equal: |
| 360 | return above_equal; |
| 361 | case less: |
| 362 | return greater; |
| 363 | case greater: |
| 364 | return less; |
| 365 | case greater_equal: |
| 366 | return less_equal; |
| 367 | case less_equal: |
| 368 | return greater_equal; |
| 369 | default: |
| 370 | return cc; |
| 371 | }; |
| 372 | } |
| 373 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 374 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 375 | // ----------------------------------------------------------------------------- |
| 376 | // Machine instruction Immediates |
| 377 | |
| 378 | class Immediate BASE_EMBEDDED { |
| 379 | public: |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 380 | explicit Immediate(int32_t value) : value_(value) {} |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 381 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 382 | private: |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 383 | int32_t value_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 384 | |
| 385 | friend class Assembler; |
| 386 | }; |
| 387 | |
| 388 | |
| 389 | // ----------------------------------------------------------------------------- |
| 390 | // Machine instruction Operands |
| 391 | |
| 392 | enum ScaleFactor { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 393 | times_1 = 0, |
| 394 | times_2 = 1, |
| 395 | times_4 = 2, |
| 396 | times_8 = 3, |
| 397 | times_int_size = times_4, |
| 398 | times_pointer_size = times_8 |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 399 | }; |
| 400 | |
| 401 | |
| 402 | class Operand BASE_EMBEDDED { |
| 403 | public: |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 404 | // [base + disp/r] |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 405 | Operand(Register base, int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 406 | |
| 407 | // [base + index*scale + disp/r] |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 408 | Operand(Register base, |
| 409 | Register index, |
| 410 | ScaleFactor scale, |
| 411 | int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 412 | |
| 413 | // [index*scale + disp/r] |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 414 | Operand(Register index, |
| 415 | ScaleFactor scale, |
| 416 | int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 417 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 418 | // Offset from existing memory operand. |
| 419 | // Offset is added to existing displacement as 32-bit signed values and |
| 420 | // this must not overflow. |
| 421 | Operand(const Operand& base, int32_t offset); |
| 422 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 423 | // Checks whether either base or index register is the given register. |
| 424 | // Does not check the "reg" part of the Operand. |
| 425 | bool AddressUsesRegister(Register reg) const; |
| 426 | |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 427 | // Queries related to the size of the generated instruction. |
| 428 | // Whether the generated instruction will have a REX prefix. |
| 429 | bool requires_rex() const { return rex_ != 0; } |
| 430 | // Size of the ModR/M, SIB and displacement parts of the generated |
| 431 | // instruction. |
| 432 | int operand_size() const { return len_; } |
| 433 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 434 | private: |
| 435 | byte rex_; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 436 | byte buf_[6]; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 437 | // The number of bytes of buf_ in use. |
| 438 | byte len_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 439 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 440 | // Set the ModR/M byte without an encoded 'reg' register. The |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 441 | // register is encoded later as part of the emit_operand operation. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 442 | // set_modrm can be called before or after set_sib and set_disp*. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 443 | inline void set_modrm(int mod, Register rm); |
| 444 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 445 | // Set the SIB byte if one is needed. Sets the length to 2 rather than 1. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 446 | inline void set_sib(ScaleFactor scale, Register index, Register base); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 447 | |
| 448 | // Adds operand displacement fields (offsets added to the memory address). |
| 449 | // Needs to be called after set_sib, not before it. |
| 450 | inline void set_disp8(int disp); |
| 451 | inline void set_disp32(int disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 452 | |
| 453 | friend class Assembler; |
| 454 | }; |
| 455 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 456 | |
| 457 | // CpuFeatures keeps track of which features are supported by the target CPU. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 458 | // Supported features must be enabled by a CpuFeatureScope before use. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 459 | // Example: |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 460 | // if (assembler->IsSupported(SSE3)) { |
| 461 | // CpuFeatureScope fscope(assembler, SSE3); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 462 | // // Generate SSE3 floating point code. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 463 | // } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 464 | // // Generate standard SSE2 floating point code. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 465 | // } |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 466 | class CpuFeatures : public AllStatic { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 467 | public: |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 468 | // Detect features of the target CPU. Set safe defaults if the serializer |
| 469 | // is enabled (snapshots must be portable). |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 470 | static void Probe(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 471 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 472 | // Check whether a feature is supported by the target CPU. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 473 | static bool IsSupported(CpuFeature f) { |
| 474 | ASSERT(initialized_); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 475 | if (f == SSE3 && !FLAG_enable_sse3) return false; |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 476 | if (f == SSE4_1 && !FLAG_enable_sse4_1) return false; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 477 | if (f == CMOV && !FLAG_enable_cmov) return false; |
| 478 | if (f == RDTSC && !FLAG_enable_rdtsc) return false; |
| 479 | if (f == SAHF && !FLAG_enable_sahf) return false; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 480 | return (supported_ & (static_cast<uint64_t>(1) << f)) != 0; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 481 | } |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 482 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 483 | static bool IsFoundByRuntimeProbingOnly(CpuFeature f) { |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 484 | ASSERT(initialized_); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 485 | return (found_by_runtime_probing_only_ & |
| 486 | (static_cast<uint64_t>(1) << f)) != 0; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 487 | } |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 488 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 489 | static bool IsSafeForSnapshot(CpuFeature f) { |
| 490 | return (IsSupported(f) && |
| 491 | (!Serializer::enabled() || !IsFoundByRuntimeProbingOnly(f))); |
| 492 | } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 493 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 494 | private: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 495 | // Safe defaults include CMOV for X64. It is always available, if |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 496 | // anyone checks, but they shouldn't need to check. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 497 | // The required user mode extensions in X64 are (from AMD64 ABI Table A.1): |
| 498 | // fpu, tsc, cx8, cmov, mmx, sse, sse2, fxsr, syscall |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 499 | static const uint64_t kDefaultCpuFeatures = (1 << CMOV); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 500 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 501 | #ifdef DEBUG |
| 502 | static bool initialized_; |
| 503 | #endif |
| 504 | static uint64_t supported_; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 505 | static uint64_t found_by_runtime_probing_only_; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 506 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 507 | friend class ExternalReference; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 508 | DISALLOW_COPY_AND_ASSIGN(CpuFeatures); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 509 | }; |
| 510 | |
| 511 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 512 | class Assembler : public AssemblerBase { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 513 | private: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 514 | // We check before assembling an instruction that there is sufficient |
| 515 | // space to write an instruction and its relocation information. |
| 516 | // The relocation writer's position must be kGap bytes above the end of |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 517 | // the generated instructions. This leaves enough space for the |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 518 | // longest possible x64 instruction, 15 bytes, and the longest possible |
| 519 | // relocation information encoding, RelocInfoWriter::kMaxLength == 16. |
| 520 | // (There is a 15 byte limit on x64 instruction length that rules out some |
| 521 | // otherwise valid instructions.) |
| 522 | // This allows for a single, fast space check per instruction. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 523 | static const int kGap = 32; |
| 524 | |
| 525 | public: |
| 526 | // Create an assembler. Instructions and relocation information are emitted |
| 527 | // into a buffer, with the instructions starting from the beginning and the |
| 528 | // relocation information starting from the end of the buffer. See CodeDesc |
| 529 | // for a detailed comment on the layout (globals.h). |
| 530 | // |
| 531 | // If the provided buffer is NULL, the assembler allocates and grows its own |
| 532 | // buffer, and buffer_size determines the initial buffer size. The buffer is |
| 533 | // owned by the assembler and deallocated upon destruction of the assembler. |
| 534 | // |
| 535 | // If the provided buffer is not NULL, the assembler uses the provided buffer |
| 536 | // for code generation and assumes its size to be buffer_size. If the buffer |
| 537 | // is too small, a fatal error occurs. No deallocation of the buffer is done |
| 538 | // upon destruction of the assembler. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 539 | Assembler(Isolate* isolate, void* buffer, int buffer_size); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 540 | virtual ~Assembler() { } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 541 | |
| 542 | // GetCode emits any pending (non-emitted) code and fills the descriptor |
| 543 | // desc. GetCode() is idempotent; it returns the same result if no other |
| 544 | // Assembler functions are invoked in between GetCode() calls. |
| 545 | void GetCode(CodeDesc* desc); |
| 546 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 547 | // Read/Modify the code target in the relative branch/call instruction at pc. |
| 548 | // On the x64 architecture, we use relative jumps with a 32-bit displacement |
| 549 | // to jump to other Code objects in the Code space in the heap. |
| 550 | // Jumps to C functions are done indirectly through a 64-bit register holding |
| 551 | // the absolute address of the target. |
| 552 | // These functions convert between absolute Addresses of Code objects and |
| 553 | // the relative displacements stored in the code. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 554 | static inline Address target_address_at(Address pc); |
| 555 | static inline void set_target_address_at(Address pc, Address target); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 556 | |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 557 | // Return the code target address at a call site from the return address |
| 558 | // of that call in the instruction stream. |
| 559 | static inline Address target_address_from_return_address(Address pc); |
| 560 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 561 | // This sets the branch destination (which is in the instruction on x64). |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 562 | // This is for calls and branches within generated code. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 563 | inline static void deserialization_set_special_target_at( |
| 564 | Address instruction_payload, Address target) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 565 | set_target_address_at(instruction_payload, target); |
| 566 | } |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 567 | |
| 568 | // This sets the branch destination (which is a load instruction on x64). |
| 569 | // This is for calls and branches to runtime code. |
| 570 | inline static void set_external_target_at(Address instruction_payload, |
| 571 | Address target) { |
| 572 | *reinterpret_cast<Address*>(instruction_payload) = target; |
| 573 | } |
| 574 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 575 | inline Handle<Object> code_target_object_handle_at(Address pc); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 576 | inline Address runtime_entry_at(Address pc); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 577 | // Number of bytes taken up by the branch target in the code. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 578 | static const int kSpecialTargetSize = 4; // Use 32-bit displacement. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 579 | // Distance between the address of the code target in the call instruction |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 580 | // and the return address pushed on the stack. |
| 581 | static const int kCallTargetAddressOffset = 4; // Use 32-bit displacement. |
| 582 | // Distance between the start of the JS return sequence and where the |
| 583 | // 32-bit displacement of a near call would be, relative to the pushed |
| 584 | // return address. TODO: Use return sequence length instead. |
| 585 | // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; |
| 586 | static const int kPatchReturnSequenceAddressOffset = 13 - 4; |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 587 | // Distance between start of patched debug break slot and where the |
| 588 | // 32-bit displacement of a near call would be, relative to the pushed |
| 589 | // return address. TODO: Use return sequence length instead. |
| 590 | // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; |
| 591 | static const int kPatchDebugBreakSlotAddressOffset = 13 - 4; |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 592 | // TODO(X64): Rename this, removing the "Real", after changing the above. |
| 593 | static const int kRealPatchReturnSequenceAddressOffset = 2; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 594 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 595 | // Some x64 JS code is padded with int3 to make it large |
| 596 | // enough to hold an instruction when the debugger patches it. |
| 597 | static const int kJumpInstructionLength = 13; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 598 | static const int kCallInstructionLength = 13; |
| 599 | static const int kJSReturnSequenceLength = 13; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 600 | static const int kShortCallInstructionLength = 5; |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 601 | static const int kPatchDebugBreakSlotReturnOffset = 4; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 602 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 603 | // The debug break slot must be able to contain a call instruction. |
| 604 | static const int kDebugBreakSlotLength = kCallInstructionLength; |
| 605 | |
lrn@chromium.org | 5d00b60 | 2011-01-05 09:51:43 +0000 | [diff] [blame] | 606 | // One byte opcode for test eax,0xXXXXXXXX. |
| 607 | static const byte kTestEaxByte = 0xA9; |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 608 | // One byte opcode for test al, 0xXX. |
| 609 | static const byte kTestAlByte = 0xA8; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 610 | // One byte opcode for nop. |
| 611 | static const byte kNopByte = 0x90; |
| 612 | |
| 613 | // One byte prefix for a short conditional jump. |
| 614 | static const byte kJccShortPrefix = 0x70; |
| 615 | static const byte kJncShortOpcode = kJccShortPrefix | not_carry; |
| 616 | static const byte kJcShortOpcode = kJccShortPrefix | carry; |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 617 | static const byte kJnzShortOpcode = kJccShortPrefix | not_zero; |
| 618 | static const byte kJzShortOpcode = kJccShortPrefix | zero; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 619 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 620 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 621 | // --------------------------------------------------------------------------- |
| 622 | // Code generation |
| 623 | // |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 624 | // Function names correspond one-to-one to x64 instruction mnemonics. |
| 625 | // Unless specified otherwise, instructions operate on 64-bit operands. |
| 626 | // |
| 627 | // If we need versions of an assembly instruction that operate on different |
| 628 | // width arguments, we add a single-letter suffix specifying the width. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 629 | // This is done for the following instructions: mov, cmp, inc, dec, |
| 630 | // add, sub, and test. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 631 | // There are no versions of these instructions without the suffix. |
| 632 | // - Instructions on 8-bit (byte) operands/registers have a trailing 'b'. |
| 633 | // - Instructions on 16-bit (word) operands/registers have a trailing 'w'. |
| 634 | // - Instructions on 32-bit (doubleword) operands/registers use 'l'. |
| 635 | // - Instructions on 64-bit (quadword) operands/registers use 'q'. |
| 636 | // |
| 637 | // Some mnemonics, such as "and", are the same as C++ keywords. |
| 638 | // Naming conflicts with C++ keywords are resolved by adding a trailing '_'. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 639 | |
| 640 | // Insert the smallest number of nop instructions |
| 641 | // possible to align the pc offset to a multiple |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 642 | // of m, where m must be a power of 2. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 643 | void Align(int m); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 644 | void Nop(int bytes = 1); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 645 | // Aligns code to something that's optimal for a jump target for the platform. |
| 646 | void CodeTargetAlign(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 647 | |
| 648 | // Stack |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 649 | void pushfq(); |
| 650 | void popfq(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 651 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 652 | void push(Immediate value); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 653 | // Push a 32 bit integer, and guarantee that it is actually pushed as a |
| 654 | // 32 bit value, the normal push will optimize the 8 bit case. |
| 655 | void push_imm32(int32_t imm32); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 656 | void push(Register src); |
| 657 | void push(const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 658 | |
| 659 | void pop(Register dst); |
| 660 | void pop(const Operand& dst); |
| 661 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 662 | void enter(Immediate size); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 663 | void leave(); |
| 664 | |
| 665 | // Moves |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 666 | void movb(Register dst, const Operand& src); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 667 | void movb(Register dst, Immediate imm); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 668 | void movb(const Operand& dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 669 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 670 | // Move the low 16 bits of a 64-bit register value to a 16-bit |
| 671 | // memory location. |
| 672 | void movw(const Operand& dst, Register src); |
| 673 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 674 | void movl(Register dst, Register src); |
| 675 | void movl(Register dst, const Operand& src); |
| 676 | void movl(const Operand& dst, Register src); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 677 | void movl(const Operand& dst, Immediate imm); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 678 | // Load a 32-bit immediate value, zero-extended to 64 bits. |
| 679 | void movl(Register dst, Immediate imm32); |
| 680 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 681 | // Move 64 bit register value to 64-bit memory location. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 682 | void movq(const Operand& dst, Register src); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 683 | // Move 64 bit memory location to 64-bit register value. |
| 684 | void movq(Register dst, const Operand& src); |
| 685 | void movq(Register dst, Register src); |
| 686 | // Sign extends immediate 32-bit value to 64 bits. |
| 687 | void movq(Register dst, Immediate x); |
| 688 | // Move the offset of the label location relative to the current |
| 689 | // position (after the move) to the destination. |
| 690 | void movl(const Operand& dst, Label* src); |
| 691 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 692 | // Move sign extended immediate to memory location. |
| 693 | void movq(const Operand& dst, Immediate value); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 694 | // Instructions to load a 64-bit immediate into a register. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 695 | // All 64-bit immediates must have a relocation mode. |
| 696 | void movq(Register dst, void* ptr, RelocInfo::Mode rmode); |
| 697 | void movq(Register dst, int64_t value, RelocInfo::Mode rmode); |
| 698 | void movq(Register dst, const char* s, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 699 | // Moves the address of the external reference into the register. |
| 700 | void movq(Register dst, ExternalReference ext); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 701 | void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode); |
| 702 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 703 | void movsxbq(Register dst, const Operand& src); |
| 704 | void movsxwq(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 705 | void movsxlq(Register dst, Register src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 706 | void movsxlq(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 707 | void movzxbq(Register dst, const Operand& src); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 708 | void movzxbl(Register dst, const Operand& src); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 709 | void movzxwq(Register dst, const Operand& src); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 710 | void movzxwl(Register dst, const Operand& src); |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 711 | void movzxwl(Register dst, Register src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 712 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 713 | // Repeated moves. |
| 714 | |
| 715 | void repmovsb(); |
| 716 | void repmovsw(); |
| 717 | void repmovsl(); |
| 718 | void repmovsq(); |
| 719 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 720 | // Instruction to load from an immediate 64-bit pointer into RAX. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 721 | void load_rax(void* ptr, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 722 | void load_rax(ExternalReference ext); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 723 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 724 | // Conditional moves. |
| 725 | void cmovq(Condition cc, Register dst, Register src); |
| 726 | void cmovq(Condition cc, Register dst, const Operand& src); |
| 727 | void cmovl(Condition cc, Register dst, Register src); |
| 728 | void cmovl(Condition cc, Register dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 729 | |
| 730 | // Exchange two registers |
| 731 | void xchg(Register dst, Register src); |
| 732 | |
| 733 | // Arithmetics |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 734 | void addl(Register dst, Register src) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 735 | arithmetic_op_32(0x03, dst, src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 736 | } |
| 737 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 738 | void addl(Register dst, Immediate src) { |
| 739 | immediate_arithmetic_op_32(0x0, dst, src); |
| 740 | } |
| 741 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 742 | void addl(Register dst, const Operand& src) { |
| 743 | arithmetic_op_32(0x03, dst, src); |
| 744 | } |
| 745 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 746 | void addl(const Operand& dst, Immediate src) { |
| 747 | immediate_arithmetic_op_32(0x0, dst, src); |
| 748 | } |
| 749 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 750 | void addl(const Operand& dst, Register src) { |
| 751 | arithmetic_op_32(0x01, src, dst); |
| 752 | } |
| 753 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 754 | void addq(Register dst, Register src) { |
| 755 | arithmetic_op(0x03, dst, src); |
| 756 | } |
| 757 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 758 | void addq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 759 | arithmetic_op(0x03, dst, src); |
| 760 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 761 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 762 | void addq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 763 | arithmetic_op(0x01, src, dst); |
| 764 | } |
| 765 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 766 | void addq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 767 | immediate_arithmetic_op(0x0, dst, src); |
| 768 | } |
| 769 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 770 | void addq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 771 | immediate_arithmetic_op(0x0, dst, src); |
| 772 | } |
| 773 | |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 774 | void sbbl(Register dst, Register src) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 775 | arithmetic_op_32(0x1b, dst, src); |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 776 | } |
| 777 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 778 | void sbbq(Register dst, Register src) { |
| 779 | arithmetic_op(0x1b, dst, src); |
| 780 | } |
| 781 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 782 | void cmpb(Register dst, Immediate src) { |
| 783 | immediate_arithmetic_op_8(0x7, dst, src); |
| 784 | } |
| 785 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 786 | void cmpb_al(Immediate src); |
| 787 | |
| 788 | void cmpb(Register dst, Register src) { |
| 789 | arithmetic_op(0x3A, dst, src); |
| 790 | } |
| 791 | |
| 792 | void cmpb(Register dst, const Operand& src) { |
| 793 | arithmetic_op(0x3A, dst, src); |
| 794 | } |
| 795 | |
| 796 | void cmpb(const Operand& dst, Register src) { |
| 797 | arithmetic_op(0x38, src, dst); |
| 798 | } |
| 799 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 800 | void cmpb(const Operand& dst, Immediate src) { |
| 801 | immediate_arithmetic_op_8(0x7, dst, src); |
| 802 | } |
| 803 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 804 | void cmpw(const Operand& dst, Immediate src) { |
| 805 | immediate_arithmetic_op_16(0x7, dst, src); |
| 806 | } |
| 807 | |
| 808 | void cmpw(Register dst, Immediate src) { |
| 809 | immediate_arithmetic_op_16(0x7, dst, src); |
| 810 | } |
| 811 | |
| 812 | void cmpw(Register dst, const Operand& src) { |
| 813 | arithmetic_op_16(0x3B, dst, src); |
| 814 | } |
| 815 | |
| 816 | void cmpw(Register dst, Register src) { |
| 817 | arithmetic_op_16(0x3B, dst, src); |
| 818 | } |
| 819 | |
| 820 | void cmpw(const Operand& dst, Register src) { |
| 821 | arithmetic_op_16(0x39, src, dst); |
| 822 | } |
| 823 | |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 824 | void cmpl(Register dst, Register src) { |
| 825 | arithmetic_op_32(0x3B, dst, src); |
| 826 | } |
| 827 | |
| 828 | void cmpl(Register dst, const Operand& src) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 829 | arithmetic_op_32(0x3B, dst, src); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | void cmpl(const Operand& dst, Register src) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 833 | arithmetic_op_32(0x39, src, dst); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | void cmpl(Register dst, Immediate src) { |
| 837 | immediate_arithmetic_op_32(0x7, dst, src); |
| 838 | } |
| 839 | |
| 840 | void cmpl(const Operand& dst, Immediate src) { |
| 841 | immediate_arithmetic_op_32(0x7, dst, src); |
| 842 | } |
| 843 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 844 | void cmpq(Register dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 845 | arithmetic_op(0x3B, dst, src); |
| 846 | } |
| 847 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 848 | void cmpq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 849 | arithmetic_op(0x3B, dst, src); |
| 850 | } |
| 851 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 852 | void cmpq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 853 | arithmetic_op(0x39, src, dst); |
| 854 | } |
| 855 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 856 | void cmpq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 857 | immediate_arithmetic_op(0x7, dst, src); |
| 858 | } |
| 859 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 860 | void cmpq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 861 | immediate_arithmetic_op(0x7, dst, src); |
| 862 | } |
| 863 | |
| 864 | void and_(Register dst, Register src) { |
| 865 | arithmetic_op(0x23, dst, src); |
| 866 | } |
| 867 | |
| 868 | void and_(Register dst, const Operand& src) { |
| 869 | arithmetic_op(0x23, dst, src); |
| 870 | } |
| 871 | |
| 872 | void and_(const Operand& dst, Register src) { |
| 873 | arithmetic_op(0x21, src, dst); |
| 874 | } |
| 875 | |
| 876 | void and_(Register dst, Immediate src) { |
| 877 | immediate_arithmetic_op(0x4, dst, src); |
| 878 | } |
| 879 | |
| 880 | void and_(const Operand& dst, Immediate src) { |
| 881 | immediate_arithmetic_op(0x4, dst, src); |
| 882 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 883 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 884 | void andl(Register dst, Immediate src) { |
| 885 | immediate_arithmetic_op_32(0x4, dst, src); |
| 886 | } |
| 887 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 888 | void andl(Register dst, Register src) { |
| 889 | arithmetic_op_32(0x23, dst, src); |
| 890 | } |
| 891 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 892 | void andl(Register dst, const Operand& src) { |
| 893 | arithmetic_op_32(0x23, dst, src); |
| 894 | } |
| 895 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 896 | void andb(Register dst, Immediate src) { |
| 897 | immediate_arithmetic_op_8(0x4, dst, src); |
| 898 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 899 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 900 | void decq(Register dst); |
| 901 | void decq(const Operand& dst); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 902 | void decl(Register dst); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 903 | void decl(const Operand& dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 904 | void decb(Register dst); |
| 905 | void decb(const Operand& dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 906 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 907 | // Sign-extends rax into rdx:rax. |
| 908 | void cqo(); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 909 | // Sign-extends eax into edx:eax. |
| 910 | void cdq(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 911 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 912 | // Divide rdx:rax by src. Quotient in rax, remainder in rdx. |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 913 | void idivq(Register src); |
| 914 | // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. |
| 915 | void idivl(Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 916 | |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 917 | // Signed multiply instructions. |
| 918 | void imul(Register src); // rdx:rax = rax * src. |
| 919 | void imul(Register dst, Register src); // dst = dst * src. |
| 920 | void imul(Register dst, const Operand& src); // dst = dst * src. |
| 921 | void imul(Register dst, Register src, Immediate imm); // dst = src * imm. |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 922 | // Signed 32-bit multiply instructions. |
| 923 | void imull(Register dst, Register src); // dst = dst * src. |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 924 | void imull(Register dst, const Operand& src); // dst = dst * src. |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 925 | void imull(Register dst, Register src, Immediate imm); // dst = src * imm. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 926 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 927 | void incq(Register dst); |
| 928 | void incq(const Operand& dst); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 929 | void incl(Register dst); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 930 | void incl(const Operand& dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 931 | |
| 932 | void lea(Register dst, const Operand& src); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 933 | void leal(Register dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 934 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 935 | // Multiply rax by src, put the result in rdx:rax. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 936 | void mul(Register src); |
| 937 | |
| 938 | void neg(Register dst); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 939 | void neg(const Operand& dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 940 | void negl(Register dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 941 | |
| 942 | void not_(Register dst); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 943 | void not_(const Operand& dst); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 944 | void notl(Register dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 945 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 946 | void or_(Register dst, Register src) { |
| 947 | arithmetic_op(0x0B, dst, src); |
| 948 | } |
| 949 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 950 | void orl(Register dst, Register src) { |
| 951 | arithmetic_op_32(0x0B, dst, src); |
| 952 | } |
| 953 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 954 | void or_(Register dst, const Operand& src) { |
| 955 | arithmetic_op(0x0B, dst, src); |
| 956 | } |
| 957 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 958 | void orl(Register dst, const Operand& src) { |
| 959 | arithmetic_op_32(0x0B, dst, src); |
| 960 | } |
| 961 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 962 | void or_(const Operand& dst, Register src) { |
| 963 | arithmetic_op(0x09, src, dst); |
| 964 | } |
| 965 | |
| 966 | void or_(Register dst, Immediate src) { |
| 967 | immediate_arithmetic_op(0x1, dst, src); |
| 968 | } |
| 969 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 970 | void orl(Register dst, Immediate src) { |
| 971 | immediate_arithmetic_op_32(0x1, dst, src); |
| 972 | } |
| 973 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 974 | void or_(const Operand& dst, Immediate src) { |
| 975 | immediate_arithmetic_op(0x1, dst, src); |
| 976 | } |
| 977 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 978 | void orl(const Operand& dst, Immediate src) { |
| 979 | immediate_arithmetic_op_32(0x1, dst, src); |
| 980 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 981 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 982 | |
| 983 | void rcl(Register dst, Immediate imm8) { |
| 984 | shift(dst, imm8, 0x2); |
| 985 | } |
| 986 | |
| 987 | void rol(Register dst, Immediate imm8) { |
| 988 | shift(dst, imm8, 0x0); |
| 989 | } |
| 990 | |
| 991 | void rcr(Register dst, Immediate imm8) { |
| 992 | shift(dst, imm8, 0x3); |
| 993 | } |
| 994 | |
| 995 | void ror(Register dst, Immediate imm8) { |
| 996 | shift(dst, imm8, 0x1); |
| 997 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 998 | |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame] | 999 | void rorl(Register dst, Immediate imm8) { |
| 1000 | shift_32(dst, imm8, 0x1); |
| 1001 | } |
| 1002 | |
| 1003 | void rorl_cl(Register dst) { |
| 1004 | shift_32(dst, 0x1); |
| 1005 | } |
| 1006 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1007 | // Shifts dst:src left by cl bits, affecting only dst. |
| 1008 | void shld(Register dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1009 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1010 | // Shifts src:dst right by cl bits, affecting only dst. |
| 1011 | void shrd(Register dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1012 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1013 | // Shifts dst right, duplicating sign bit, by shift_amount bits. |
| 1014 | // Shifting by 1 is handled efficiently. |
| 1015 | void sar(Register dst, Immediate shift_amount) { |
| 1016 | shift(dst, shift_amount, 0x7); |
| 1017 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1018 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1019 | // Shifts dst right, duplicating sign bit, by shift_amount bits. |
| 1020 | // Shifting by 1 is handled efficiently. |
| 1021 | void sarl(Register dst, Immediate shift_amount) { |
| 1022 | shift_32(dst, shift_amount, 0x7); |
| 1023 | } |
| 1024 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1025 | // Shifts dst right, duplicating sign bit, by cl % 64 bits. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1026 | void sar_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1027 | shift(dst, 0x7); |
| 1028 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1029 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1030 | // Shifts dst right, duplicating sign bit, by cl % 64 bits. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1031 | void sarl_cl(Register dst) { |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1032 | shift_32(dst, 0x7); |
| 1033 | } |
| 1034 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1035 | void shl(Register dst, Immediate shift_amount) { |
| 1036 | shift(dst, shift_amount, 0x4); |
| 1037 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1038 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1039 | void shl_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1040 | shift(dst, 0x4); |
| 1041 | } |
| 1042 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1043 | void shll_cl(Register dst) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1044 | shift_32(dst, 0x4); |
| 1045 | } |
| 1046 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1047 | void shll(Register dst, Immediate shift_amount) { |
| 1048 | shift_32(dst, shift_amount, 0x4); |
| 1049 | } |
| 1050 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1051 | void shr(Register dst, Immediate shift_amount) { |
| 1052 | shift(dst, shift_amount, 0x5); |
| 1053 | } |
| 1054 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1055 | void shr_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1056 | shift(dst, 0x5); |
| 1057 | } |
| 1058 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1059 | void shrl_cl(Register dst) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1060 | shift_32(dst, 0x5); |
| 1061 | } |
| 1062 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1063 | void shrl(Register dst, Immediate shift_amount) { |
| 1064 | shift_32(dst, shift_amount, 0x5); |
| 1065 | } |
| 1066 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1067 | void store_rax(void* dst, RelocInfo::Mode mode); |
| 1068 | void store_rax(ExternalReference ref); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1069 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1070 | void subq(Register dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1071 | arithmetic_op(0x2B, dst, src); |
| 1072 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1073 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1074 | void subq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1075 | arithmetic_op(0x2B, dst, src); |
| 1076 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1077 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1078 | void subq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1079 | arithmetic_op(0x29, src, dst); |
| 1080 | } |
| 1081 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1082 | void subq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1083 | immediate_arithmetic_op(0x5, dst, src); |
| 1084 | } |
| 1085 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1086 | void subq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1087 | immediate_arithmetic_op(0x5, dst, src); |
| 1088 | } |
| 1089 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1090 | void subl(Register dst, Register src) { |
| 1091 | arithmetic_op_32(0x2B, dst, src); |
| 1092 | } |
| 1093 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1094 | void subl(Register dst, const Operand& src) { |
| 1095 | arithmetic_op_32(0x2B, dst, src); |
| 1096 | } |
| 1097 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1098 | void subl(const Operand& dst, Immediate src) { |
| 1099 | immediate_arithmetic_op_32(0x5, dst, src); |
| 1100 | } |
| 1101 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1102 | void subl(Register dst, Immediate src) { |
| 1103 | immediate_arithmetic_op_32(0x5, dst, src); |
| 1104 | } |
| 1105 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1106 | void subb(Register dst, Immediate src) { |
| 1107 | immediate_arithmetic_op_8(0x5, dst, src); |
| 1108 | } |
| 1109 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1110 | void testb(Register dst, Register src); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1111 | void testb(Register reg, Immediate mask); |
| 1112 | void testb(const Operand& op, Immediate mask); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1113 | void testb(const Operand& op, Register reg); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1114 | void testl(Register dst, Register src); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1115 | void testl(Register reg, Immediate mask); |
| 1116 | void testl(const Operand& op, Immediate mask); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1117 | void testq(const Operand& op, Register reg); |
| 1118 | void testq(Register dst, Register src); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1119 | void testq(Register dst, Immediate mask); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1120 | |
| 1121 | void xor_(Register dst, Register src) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1122 | if (dst.code() == src.code()) { |
| 1123 | arithmetic_op_32(0x33, dst, src); |
| 1124 | } else { |
| 1125 | arithmetic_op(0x33, dst, src); |
| 1126 | } |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1127 | } |
| 1128 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1129 | void xorl(Register dst, Register src) { |
| 1130 | arithmetic_op_32(0x33, dst, src); |
| 1131 | } |
| 1132 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1133 | void xorl(Register dst, const Operand& src) { |
| 1134 | arithmetic_op_32(0x33, dst, src); |
| 1135 | } |
| 1136 | |
| 1137 | void xorl(Register dst, Immediate src) { |
| 1138 | immediate_arithmetic_op_32(0x6, dst, src); |
| 1139 | } |
| 1140 | |
| 1141 | void xorl(const Operand& dst, Immediate src) { |
| 1142 | immediate_arithmetic_op_32(0x6, dst, src); |
| 1143 | } |
| 1144 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1145 | void xor_(Register dst, const Operand& src) { |
| 1146 | arithmetic_op(0x33, dst, src); |
| 1147 | } |
| 1148 | |
| 1149 | void xor_(const Operand& dst, Register src) { |
| 1150 | arithmetic_op(0x31, src, dst); |
| 1151 | } |
| 1152 | |
| 1153 | void xor_(Register dst, Immediate src) { |
| 1154 | immediate_arithmetic_op(0x6, dst, src); |
| 1155 | } |
| 1156 | |
| 1157 | void xor_(const Operand& dst, Immediate src) { |
| 1158 | immediate_arithmetic_op(0x6, dst, src); |
| 1159 | } |
| 1160 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1161 | // Bit operations. |
| 1162 | void bt(const Operand& dst, Register src); |
| 1163 | void bts(const Operand& dst, Register src); |
| 1164 | |
| 1165 | // Miscellaneous |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1166 | void clc(); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1167 | void cld(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1168 | void cpuid(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1169 | void hlt(); |
| 1170 | void int3(); |
| 1171 | void nop(); |
| 1172 | void rdtsc(); |
| 1173 | void ret(int imm16); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1174 | void setcc(Condition cc, Register reg); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1175 | |
| 1176 | // Label operations & relative jumps (PPUM Appendix D) |
| 1177 | // |
| 1178 | // Takes a branch opcode (cc) and a label (L) and generates |
| 1179 | // either a backward branch or a forward branch and links it |
| 1180 | // to the label fixup chain. Usage: |
| 1181 | // |
| 1182 | // Label L; // unbound label |
| 1183 | // j(cc, &L); // forward branch to unbound label |
| 1184 | // bind(&L); // bind label to the current pc |
| 1185 | // j(cc, &L); // backward branch to bound label |
| 1186 | // bind(&L); // illegal: a label may be bound only once |
| 1187 | // |
| 1188 | // Note: The same Label can be used for forward and backward branches |
| 1189 | // but it may be bound only once. |
| 1190 | |
| 1191 | void bind(Label* L); // binds an unbound label L to the current code position |
| 1192 | |
| 1193 | // Calls |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1194 | // Call near relative 32-bit displacement, relative to next instruction. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1195 | void call(Label* L); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1196 | void call(Address entry, RelocInfo::Mode rmode); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1197 | void call(Handle<Code> target, |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1198 | RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1199 | TypeFeedbackId ast_id = TypeFeedbackId::None()); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1200 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1201 | // Calls directly to the given address using a relative offset. |
| 1202 | // Should only ever be used in Code objects for calls within the |
| 1203 | // same Code object. Should not be used when generating new code (use labels), |
| 1204 | // but only when patching existing code. |
| 1205 | void call(Address target); |
| 1206 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1207 | // Call near absolute indirect, address in register |
| 1208 | void call(Register adr); |
| 1209 | |
| 1210 | // Call near indirect |
| 1211 | void call(const Operand& operand); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1212 | |
| 1213 | // Jumps |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1214 | // Jump short or near relative. |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1215 | // Use a 32-bit signed displacement. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1216 | // Unconditional jump to L |
| 1217 | void jmp(Label* L, Label::Distance distance = Label::kFar); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1218 | void jmp(Address entry, RelocInfo::Mode rmode); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1219 | void jmp(Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1220 | |
| 1221 | // Jump near absolute indirect (r64) |
| 1222 | void jmp(Register adr); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1223 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1224 | // Jump near absolute indirect (m64) |
| 1225 | void jmp(const Operand& src); |
| 1226 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1227 | // Conditional jumps |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1228 | void j(Condition cc, |
| 1229 | Label* L, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1230 | Label::Distance distance = Label::kFar); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1231 | void j(Condition cc, Address entry, RelocInfo::Mode rmode); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1232 | void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1233 | |
| 1234 | // Floating-point operations |
| 1235 | void fld(int i); |
| 1236 | |
| 1237 | void fld1(); |
| 1238 | void fldz(); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1239 | void fldpi(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1240 | void fldln2(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1241 | |
| 1242 | void fld_s(const Operand& adr); |
| 1243 | void fld_d(const Operand& adr); |
| 1244 | |
| 1245 | void fstp_s(const Operand& adr); |
| 1246 | void fstp_d(const Operand& adr); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1247 | void fstp(int index); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1248 | |
| 1249 | void fild_s(const Operand& adr); |
| 1250 | void fild_d(const Operand& adr); |
| 1251 | |
| 1252 | void fist_s(const Operand& adr); |
| 1253 | |
| 1254 | void fistp_s(const Operand& adr); |
| 1255 | void fistp_d(const Operand& adr); |
| 1256 | |
| 1257 | void fisttp_s(const Operand& adr); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1258 | void fisttp_d(const Operand& adr); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1259 | |
| 1260 | void fabs(); |
| 1261 | void fchs(); |
| 1262 | |
| 1263 | void fadd(int i); |
| 1264 | void fsub(int i); |
| 1265 | void fmul(int i); |
| 1266 | void fdiv(int i); |
| 1267 | |
| 1268 | void fisub_s(const Operand& adr); |
| 1269 | |
| 1270 | void faddp(int i = 1); |
| 1271 | void fsubp(int i = 1); |
| 1272 | void fsubrp(int i = 1); |
| 1273 | void fmulp(int i = 1); |
| 1274 | void fdivp(int i = 1); |
| 1275 | void fprem(); |
| 1276 | void fprem1(); |
| 1277 | |
| 1278 | void fxch(int i = 1); |
| 1279 | void fincstp(); |
| 1280 | void ffree(int i = 0); |
| 1281 | |
| 1282 | void ftst(); |
| 1283 | void fucomp(int i); |
| 1284 | void fucompp(); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1285 | void fucomi(int i); |
| 1286 | void fucomip(); |
| 1287 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1288 | void fcompp(); |
| 1289 | void fnstsw_ax(); |
| 1290 | void fwait(); |
| 1291 | void fnclex(); |
| 1292 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1293 | void fsin(); |
| 1294 | void fcos(); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 1295 | void fptan(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1296 | void fyl2x(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1297 | void f2xm1(); |
| 1298 | void fscale(); |
| 1299 | void fninit(); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1300 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1301 | void frndint(); |
| 1302 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1303 | void sahf(); |
| 1304 | |
| 1305 | // SSE2 instructions |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1306 | void movd(XMMRegister dst, Register src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1307 | void movd(Register dst, XMMRegister src); |
| 1308 | void movq(XMMRegister dst, Register src); |
| 1309 | void movq(Register dst, XMMRegister src); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1310 | void movq(XMMRegister dst, XMMRegister src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1311 | void extractps(Register dst, XMMRegister src, byte imm8); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1312 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1313 | // Don't use this unless it's important to keep the |
| 1314 | // top half of the destination register unchanged. |
| 1315 | // Used movaps when moving double values and movq for integer |
| 1316 | // values in xmm registers. |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1317 | void movsd(XMMRegister dst, XMMRegister src); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1318 | |
| 1319 | void movsd(const Operand& dst, XMMRegister src); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1320 | void movsd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1321 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1322 | void movdqa(const Operand& dst, XMMRegister src); |
| 1323 | void movdqa(XMMRegister dst, const Operand& src); |
| 1324 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1325 | void movdqu(const Operand& dst, XMMRegister src); |
| 1326 | void movdqu(XMMRegister dst, const Operand& src); |
| 1327 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1328 | void movapd(XMMRegister dst, XMMRegister src); |
| 1329 | void movaps(XMMRegister dst, XMMRegister src); |
| 1330 | |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1331 | void movss(XMMRegister dst, const Operand& src); |
| 1332 | void movss(const Operand& dst, XMMRegister src); |
| 1333 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1334 | void cvttss2si(Register dst, const Operand& src); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1335 | void cvttss2si(Register dst, XMMRegister src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1336 | void cvttsd2si(Register dst, const Operand& src); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1337 | void cvttsd2si(Register dst, XMMRegister src); |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 1338 | void cvttsd2siq(Register dst, XMMRegister src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1339 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1340 | void cvtlsi2sd(XMMRegister dst, const Operand& src); |
| 1341 | void cvtlsi2sd(XMMRegister dst, Register src); |
| 1342 | void cvtqsi2sd(XMMRegister dst, const Operand& src); |
| 1343 | void cvtqsi2sd(XMMRegister dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1344 | |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1345 | void cvtlsi2ss(XMMRegister dst, Register src); |
| 1346 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1347 | void cvtss2sd(XMMRegister dst, XMMRegister src); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1348 | void cvtss2sd(XMMRegister dst, const Operand& src); |
| 1349 | void cvtsd2ss(XMMRegister dst, XMMRegister src); |
| 1350 | |
| 1351 | void cvtsd2si(Register dst, XMMRegister src); |
| 1352 | void cvtsd2siq(Register dst, XMMRegister src); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1353 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1354 | void addsd(XMMRegister dst, XMMRegister src); |
danno@chromium.org | 1f34ad3 | 2012-11-26 14:53:56 +0000 | [diff] [blame] | 1355 | void addsd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1356 | void subsd(XMMRegister dst, XMMRegister src); |
| 1357 | void mulsd(XMMRegister dst, XMMRegister src); |
danno@chromium.org | 1f34ad3 | 2012-11-26 14:53:56 +0000 | [diff] [blame] | 1358 | void mulsd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1359 | void divsd(XMMRegister dst, XMMRegister src); |
| 1360 | |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 1361 | void andpd(XMMRegister dst, XMMRegister src); |
| 1362 | void orpd(XMMRegister dst, XMMRegister src); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1363 | void xorpd(XMMRegister dst, XMMRegister src); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1364 | void xorps(XMMRegister dst, XMMRegister src); |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 1365 | void sqrtsd(XMMRegister dst, XMMRegister src); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1366 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1367 | void ucomisd(XMMRegister dst, XMMRegister src); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1368 | void ucomisd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1369 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1370 | enum RoundingMode { |
| 1371 | kRoundToNearest = 0x0, |
| 1372 | kRoundDown = 0x1, |
| 1373 | kRoundUp = 0x2, |
| 1374 | kRoundToZero = 0x3 |
| 1375 | }; |
| 1376 | |
| 1377 | void roundsd(XMMRegister dst, XMMRegister src, RoundingMode mode); |
| 1378 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1379 | void movmskpd(Register dst, XMMRegister src); |
ulan@chromium.org | 4121f23 | 2012-12-27 15:57:11 +0000 | [diff] [blame] | 1380 | void movmskps(Register dst, XMMRegister src); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1381 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1382 | // The first argument is the reg field, the second argument is the r/m field. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1383 | void emit_sse_operand(XMMRegister dst, XMMRegister src); |
| 1384 | void emit_sse_operand(XMMRegister reg, const Operand& adr); |
| 1385 | void emit_sse_operand(XMMRegister dst, Register src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1386 | void emit_sse_operand(Register dst, XMMRegister src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1387 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1388 | // Debugging |
| 1389 | void Print(); |
| 1390 | |
| 1391 | // Check the code size generated from label to here. |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1392 | int SizeOfCodeGeneratedSince(Label* label) { |
| 1393 | return pc_offset() - label->pos(); |
| 1394 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1395 | |
| 1396 | // Mark address of the ExitJSFrame code. |
| 1397 | void RecordJSReturn(); |
| 1398 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1399 | // Mark address of a debug break slot. |
| 1400 | void RecordDebugBreakSlot(); |
| 1401 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1402 | // Record a comment relocation entry that can be used by a disassembler. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1403 | // Use --code-comments to enable. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 1404 | void RecordComment(const char* msg, bool force = false); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1405 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1406 | // Writes a single word of data in the code stream. |
| 1407 | // Used for inline tables, e.g., jump-tables. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1408 | void db(uint8_t data); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1409 | void dd(uint32_t data); |
| 1410 | |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 1411 | PositionsRecorder* positions_recorder() { return &positions_recorder_; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1412 | |
| 1413 | // Check if there is less than kGap bytes available in the buffer. |
| 1414 | // If this is the case, we need to grow the buffer before emitting |
| 1415 | // an instruction or relocation information. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1416 | inline bool buffer_overflow() const { |
| 1417 | return pc_ >= reloc_info_writer.pos() - kGap; |
| 1418 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1419 | |
| 1420 | // Get the number of bytes available in the buffer. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1421 | inline int available_space() const { |
| 1422 | return static_cast<int>(reloc_info_writer.pos() - pc_); |
| 1423 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1424 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1425 | static bool IsNop(Address addr); |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1426 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1427 | // Avoid overflows for displacements etc. |
| 1428 | static const int kMaximalBufferSize = 512*MB; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1429 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1430 | byte byte_at(int pos) { return buffer_[pos]; } |
| 1431 | void set_byte_at(int pos, byte value) { buffer_[pos] = value; } |
| 1432 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1433 | private: |
| 1434 | byte* addr_at(int pos) { return buffer_ + pos; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1435 | uint32_t long_at(int pos) { |
| 1436 | return *reinterpret_cast<uint32_t*>(addr_at(pos)); |
| 1437 | } |
| 1438 | void long_at_put(int pos, uint32_t x) { |
| 1439 | *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; |
| 1440 | } |
| 1441 | |
| 1442 | // code emission |
| 1443 | void GrowBuffer(); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1444 | |
| 1445 | void emit(byte x) { *pc_++ = x; } |
| 1446 | inline void emitl(uint32_t x); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1447 | inline void emitq(uint64_t x, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1448 | inline void emitw(uint16_t x); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1449 | inline void emit_code_target(Handle<Code> target, |
| 1450 | RelocInfo::Mode rmode, |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1451 | TypeFeedbackId ast_id = TypeFeedbackId::None()); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1452 | inline void emit_runtime_entry(Address entry, RelocInfo::Mode rmode); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1453 | void emit(Immediate x) { emitl(x.value_); } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1454 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1455 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1456 | // the top bit of both register codes. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1457 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
| 1458 | // REX.W is set. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1459 | inline void emit_rex_64(XMMRegister reg, Register rm_reg); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1460 | inline void emit_rex_64(Register reg, XMMRegister rm_reg); |
| 1461 | inline void emit_rex_64(Register reg, Register rm_reg); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1462 | |
| 1463 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1464 | // the top bit of the destination, index, and base register codes. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1465 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1466 | // register is used for REX.B, and the high bit of op's index register |
| 1467 | // is used for REX.X. REX.W is set. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1468 | inline void emit_rex_64(Register reg, const Operand& op); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1469 | inline void emit_rex_64(XMMRegister reg, const Operand& op); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1470 | |
| 1471 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1472 | // the top bit of the register code. |
| 1473 | // The high bit of register is used for REX.B. |
| 1474 | // REX.W is set and REX.R and REX.X are clear. |
| 1475 | inline void emit_rex_64(Register rm_reg); |
| 1476 | |
| 1477 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1478 | // the top bit of the index and base register codes. |
| 1479 | // The high bit of op's base register is used for REX.B, and the high |
| 1480 | // bit of op's index register is used for REX.X. |
| 1481 | // REX.W is set and REX.R clear. |
| 1482 | inline void emit_rex_64(const Operand& op); |
| 1483 | |
| 1484 | // Emit a REX prefix that only sets REX.W to choose a 64-bit operand size. |
| 1485 | void emit_rex_64() { emit(0x48); } |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1486 | |
| 1487 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1488 | // REX.W is clear. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1489 | inline void emit_rex_32(Register reg, Register rm_reg); |
| 1490 | |
| 1491 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1492 | // register is used for REX.B, and the high bit of op's index register |
| 1493 | // is used for REX.X. REX.W is cleared. |
| 1494 | inline void emit_rex_32(Register reg, const Operand& op); |
| 1495 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1496 | // High bit of rm_reg goes to REX.B. |
| 1497 | // REX.W, REX.R and REX.X are clear. |
| 1498 | inline void emit_rex_32(Register rm_reg); |
| 1499 | |
| 1500 | // High bit of base goes to REX.B and high bit of index to REX.X. |
| 1501 | // REX.W and REX.R are clear. |
| 1502 | inline void emit_rex_32(const Operand& op); |
| 1503 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1504 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
| 1505 | // REX.W is cleared. If no REX bits are set, no byte is emitted. |
| 1506 | inline void emit_optional_rex_32(Register reg, Register rm_reg); |
| 1507 | |
| 1508 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1509 | // register is used for REX.B, and the high bit of op's index register |
| 1510 | // is used for REX.X. REX.W is cleared. If no REX bits are set, nothing |
| 1511 | // is emitted. |
| 1512 | inline void emit_optional_rex_32(Register reg, const Operand& op); |
| 1513 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1514 | // As for emit_optional_rex_32(Register, Register), except that |
| 1515 | // the registers are XMM registers. |
| 1516 | inline void emit_optional_rex_32(XMMRegister reg, XMMRegister base); |
| 1517 | |
| 1518 | // As for emit_optional_rex_32(Register, Register), except that |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1519 | // one of the registers is an XMM registers. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1520 | inline void emit_optional_rex_32(XMMRegister reg, Register base); |
| 1521 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1522 | // As for emit_optional_rex_32(Register, Register), except that |
| 1523 | // one of the registers is an XMM registers. |
| 1524 | inline void emit_optional_rex_32(Register reg, XMMRegister base); |
| 1525 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1526 | // As for emit_optional_rex_32(Register, const Operand&), except that |
| 1527 | // the register is an XMM register. |
| 1528 | inline void emit_optional_rex_32(XMMRegister reg, const Operand& op); |
| 1529 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1530 | // Optionally do as emit_rex_32(Register) if the register number has |
| 1531 | // the high bit set. |
| 1532 | inline void emit_optional_rex_32(Register rm_reg); |
| 1533 | |
| 1534 | // Optionally do as emit_rex_32(const Operand&) if the operand register |
| 1535 | // numbers have a high bit set. |
| 1536 | inline void emit_optional_rex_32(const Operand& op); |
| 1537 | |
| 1538 | |
| 1539 | // Emit the ModR/M byte, and optionally the SIB byte and |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1540 | // 1- or 4-byte offset for a memory operand. Also encodes |
| 1541 | // the second operand of the operation, a register or operation |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1542 | // subcode, into the reg field of the ModR/M byte. |
| 1543 | void emit_operand(Register reg, const Operand& adr) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1544 | emit_operand(reg.low_bits(), adr); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1545 | } |
| 1546 | |
| 1547 | // Emit the ModR/M byte, and optionally the SIB byte and |
| 1548 | // 1- or 4-byte offset for a memory operand. Also used to encode |
| 1549 | // a three-bit opcode extension into the ModR/M byte. |
| 1550 | void emit_operand(int rm, const Operand& adr); |
| 1551 | |
| 1552 | // Emit a ModR/M byte with registers coded in the reg and rm_reg fields. |
| 1553 | void emit_modrm(Register reg, Register rm_reg) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1554 | emit(0xC0 | reg.low_bits() << 3 | rm_reg.low_bits()); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | // Emit a ModR/M byte with an operation subcode in the reg field and |
| 1558 | // a register in the rm_reg field. |
| 1559 | void emit_modrm(int code, Register rm_reg) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1560 | ASSERT(is_uint3(code)); |
| 1561 | emit(0xC0 | code << 3 | rm_reg.low_bits()); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1562 | } |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1563 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1564 | // Emit the code-object-relative offset of the label's position |
| 1565 | inline void emit_code_relative_offset(Label* label); |
| 1566 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1567 | // Emit machine code for one of the operations ADD, ADC, SUB, SBC, |
| 1568 | // AND, OR, XOR, or CMP. The encodings of these operations are all |
| 1569 | // similar, differing just in the opcode or in the reg field of the |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1570 | // ModR/M byte. |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1571 | void arithmetic_op_16(byte opcode, Register reg, Register rm_reg); |
| 1572 | void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg); |
| 1573 | void arithmetic_op_32(byte opcode, Register reg, Register rm_reg); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1574 | void arithmetic_op_32(byte opcode, Register reg, const Operand& rm_reg); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1575 | void arithmetic_op(byte opcode, Register reg, Register rm_reg); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1576 | void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1577 | void immediate_arithmetic_op(byte subcode, Register dst, Immediate src); |
| 1578 | void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1579 | // Operate on a byte in memory or register. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1580 | void immediate_arithmetic_op_8(byte subcode, |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1581 | Register dst, |
| 1582 | Immediate src); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1583 | void immediate_arithmetic_op_8(byte subcode, |
| 1584 | const Operand& dst, |
| 1585 | Immediate src); |
| 1586 | // Operate on a word in memory or register. |
| 1587 | void immediate_arithmetic_op_16(byte subcode, |
| 1588 | Register dst, |
| 1589 | Immediate src); |
| 1590 | void immediate_arithmetic_op_16(byte subcode, |
| 1591 | const Operand& dst, |
| 1592 | Immediate src); |
| 1593 | // Operate on a 32-bit word in memory or register. |
| 1594 | void immediate_arithmetic_op_32(byte subcode, |
| 1595 | Register dst, |
| 1596 | Immediate src); |
| 1597 | void immediate_arithmetic_op_32(byte subcode, |
| 1598 | const Operand& dst, |
| 1599 | Immediate src); |
| 1600 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1601 | // Emit machine code for a shift operation. |
| 1602 | void shift(Register dst, Immediate shift_amount, int subcode); |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1603 | void shift_32(Register dst, Immediate shift_amount, int subcode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1604 | // Shift dst by cl % 64 bits. |
| 1605 | void shift(Register dst, int subcode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1606 | void shift_32(Register dst, int subcode); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1607 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1608 | void emit_farith(int b1, int b2, int i); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1609 | |
| 1610 | // labels |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1611 | // void print(Label* L); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1612 | void bind_to(Label* L, int pos); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1613 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1614 | // record reloc info for current pc_ |
| 1615 | void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); |
| 1616 | |
| 1617 | friend class CodePatcher; |
| 1618 | friend class EnsureSpace; |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1619 | friend class RegExpMacroAssemblerX64; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1620 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1621 | // code generation |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1622 | RelocInfoWriter reloc_info_writer; |
| 1623 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1624 | List< Handle<Code> > code_targets_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1625 | |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 1626 | PositionsRecorder positions_recorder_; |
| 1627 | friend class PositionsRecorder; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1628 | }; |
| 1629 | |
| 1630 | |
| 1631 | // Helper class that ensures that there is enough space for generating |
| 1632 | // instructions and relocation information. The constructor makes |
| 1633 | // sure that there is enough space and (in debug mode) the destructor |
| 1634 | // checks that we did not generate too much. |
| 1635 | class EnsureSpace BASE_EMBEDDED { |
| 1636 | public: |
| 1637 | explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1638 | if (assembler_->buffer_overflow()) assembler_->GrowBuffer(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1639 | #ifdef DEBUG |
| 1640 | space_before_ = assembler_->available_space(); |
| 1641 | #endif |
| 1642 | } |
| 1643 | |
| 1644 | #ifdef DEBUG |
| 1645 | ~EnsureSpace() { |
| 1646 | int bytes_generated = space_before_ - assembler_->available_space(); |
| 1647 | ASSERT(bytes_generated < assembler_->kGap); |
| 1648 | } |
| 1649 | #endif |
| 1650 | |
| 1651 | private: |
| 1652 | Assembler* assembler_; |
| 1653 | #ifdef DEBUG |
| 1654 | int space_before_; |
| 1655 | #endif |
| 1656 | }; |
| 1657 | |
| 1658 | } } // namespace v8::internal |
| 1659 | |
| 1660 | #endif // V8_X64_ASSEMBLER_X64_H_ |