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. |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 33 | // Copyright 2011 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. |
| 48 | static 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 | |
| 53 | static 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 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 58 | static 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 | |
| 63 | static 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 |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 98 | static const int kNumRegisters = 16; |
| 99 | static const int kNumAllocatableRegisters = 10; |
| 100 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 101 | static int ToAllocationIndex(Register reg) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 102 | return kAllocationIndexByRegisterCode[reg.code()]; |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | static Register FromAllocationIndex(int index) { |
| 106 | ASSERT(index >= 0 && index < kNumAllocatableRegisters); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 107 | Register result = { kRegisterCodeByAllocationIndex[index] }; |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 108 | return result; |
| 109 | } |
| 110 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 111 | static const char* AllocationIndexToString(int index) { |
| 112 | ASSERT(index >= 0 && index < kNumAllocatableRegisters); |
| 113 | const char* const names[] = { |
| 114 | "rax", |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 115 | "rbx", |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 116 | "rdx", |
| 117 | "rcx", |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 118 | "rdi", |
| 119 | "r8", |
| 120 | "r9", |
| 121 | "r11", |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 122 | "r14", |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 123 | "r15" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 124 | }; |
| 125 | return names[index]; |
| 126 | } |
| 127 | |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 128 | static Register from_code(int code) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 129 | Register r = { code }; |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 130 | return r; |
| 131 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 132 | bool is_valid() const { return 0 <= code_ && code_ < kNumRegisters; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 133 | bool is(Register reg) const { return code_ == reg.code_; } |
| 134 | int code() const { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 135 | ASSERT(is_valid()); |
| 136 | return code_; |
| 137 | } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 138 | int bit() const { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 139 | return 1 << code_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 140 | } |
| 141 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 142 | // Return the high bit of the register code as a 0 or 1. Used often |
| 143 | // when constructing the REX prefix byte. |
| 144 | int high_bit() const { |
| 145 | return code_ >> 3; |
| 146 | } |
| 147 | // Return the 3 low bits of the register code. Used when encoding registers |
| 148 | // in modR/M, SIB, and opcode bytes. |
| 149 | int low_bits() const { |
| 150 | return code_ & 0x7; |
| 151 | } |
| 152 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 153 | // Unfortunately we can't make this private in a struct when initializing |
| 154 | // by assignment. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 155 | int code_; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 156 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 157 | private: |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 158 | static const int kRegisterCodeByAllocationIndex[kNumAllocatableRegisters]; |
| 159 | static const int kAllocationIndexByRegisterCode[kNumRegisters]; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 160 | }; |
| 161 | |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 162 | const Register rax = { 0 }; |
| 163 | const Register rcx = { 1 }; |
| 164 | const Register rdx = { 2 }; |
| 165 | const Register rbx = { 3 }; |
| 166 | const Register rsp = { 4 }; |
| 167 | const Register rbp = { 5 }; |
| 168 | const Register rsi = { 6 }; |
| 169 | const Register rdi = { 7 }; |
| 170 | const Register r8 = { 8 }; |
| 171 | const Register r9 = { 9 }; |
| 172 | const Register r10 = { 10 }; |
| 173 | const Register r11 = { 11 }; |
| 174 | const Register r12 = { 12 }; |
| 175 | const Register r13 = { 13 }; |
| 176 | const Register r14 = { 14 }; |
| 177 | const Register r15 = { 15 }; |
| 178 | const Register no_reg = { -1 }; |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 179 | |
| 180 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 181 | struct XMMRegister { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 182 | static const int kNumRegisters = 16; |
| 183 | static const int kNumAllocatableRegisters = 15; |
| 184 | |
| 185 | static int ToAllocationIndex(XMMRegister reg) { |
| 186 | ASSERT(reg.code() != 0); |
| 187 | return reg.code() - 1; |
| 188 | } |
| 189 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 190 | static XMMRegister FromAllocationIndex(int index) { |
| 191 | ASSERT(0 <= index && index < kNumAllocatableRegisters); |
| 192 | XMMRegister result = { index + 1 }; |
| 193 | return result; |
| 194 | } |
| 195 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 196 | static const char* AllocationIndexToString(int index) { |
| 197 | ASSERT(index >= 0 && index < kNumAllocatableRegisters); |
| 198 | const char* const names[] = { |
| 199 | "xmm1", |
| 200 | "xmm2", |
| 201 | "xmm3", |
| 202 | "xmm4", |
| 203 | "xmm5", |
| 204 | "xmm6", |
| 205 | "xmm7", |
| 206 | "xmm8", |
| 207 | "xmm9", |
| 208 | "xmm10", |
| 209 | "xmm11", |
| 210 | "xmm12", |
| 211 | "xmm13", |
| 212 | "xmm14", |
| 213 | "xmm15" |
| 214 | }; |
| 215 | return names[index]; |
| 216 | } |
| 217 | |
| 218 | bool is_valid() const { return 0 <= code_ && code_ < kNumRegisters; } |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 219 | bool is(XMMRegister reg) const { return code_ == reg.code_; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 220 | int code() const { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 221 | ASSERT(is_valid()); |
| 222 | return code_; |
| 223 | } |
| 224 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 225 | // Return the high bit of the register code as a 0 or 1. Used often |
| 226 | // when constructing the REX prefix byte. |
| 227 | int high_bit() const { |
| 228 | return code_ >> 3; |
| 229 | } |
| 230 | // Return the 3 low bits of the register code. Used when encoding registers |
| 231 | // in modR/M, SIB, and opcode bytes. |
| 232 | int low_bits() const { |
| 233 | return code_ & 0x7; |
| 234 | } |
| 235 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 236 | int code_; |
| 237 | }; |
| 238 | |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 239 | const XMMRegister xmm0 = { 0 }; |
| 240 | const XMMRegister xmm1 = { 1 }; |
| 241 | const XMMRegister xmm2 = { 2 }; |
| 242 | const XMMRegister xmm3 = { 3 }; |
| 243 | const XMMRegister xmm4 = { 4 }; |
| 244 | const XMMRegister xmm5 = { 5 }; |
| 245 | const XMMRegister xmm6 = { 6 }; |
| 246 | const XMMRegister xmm7 = { 7 }; |
| 247 | const XMMRegister xmm8 = { 8 }; |
| 248 | const XMMRegister xmm9 = { 9 }; |
| 249 | const XMMRegister xmm10 = { 10 }; |
| 250 | const XMMRegister xmm11 = { 11 }; |
| 251 | const XMMRegister xmm12 = { 12 }; |
| 252 | const XMMRegister xmm13 = { 13 }; |
| 253 | const XMMRegister xmm14 = { 14 }; |
| 254 | const XMMRegister xmm15 = { 15 }; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 255 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 256 | |
| 257 | typedef XMMRegister DoubleRegister; |
| 258 | |
| 259 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 260 | enum Condition { |
| 261 | // any value < 0 is considered no_condition |
| 262 | no_condition = -1, |
| 263 | |
| 264 | overflow = 0, |
| 265 | no_overflow = 1, |
| 266 | below = 2, |
| 267 | above_equal = 3, |
| 268 | equal = 4, |
| 269 | not_equal = 5, |
| 270 | below_equal = 6, |
| 271 | above = 7, |
| 272 | negative = 8, |
| 273 | positive = 9, |
| 274 | parity_even = 10, |
| 275 | parity_odd = 11, |
| 276 | less = 12, |
| 277 | greater_equal = 13, |
| 278 | less_equal = 14, |
| 279 | greater = 15, |
| 280 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 281 | // Fake conditions that are handled by the |
| 282 | // opcodes using them. |
| 283 | always = 16, |
| 284 | never = 17, |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 285 | // aliases |
| 286 | carry = below, |
| 287 | not_carry = above_equal, |
| 288 | zero = equal, |
| 289 | not_zero = not_equal, |
| 290 | sign = negative, |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 291 | not_sign = positive, |
| 292 | last_condition = greater |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 293 | }; |
| 294 | |
| 295 | |
| 296 | // Returns the equivalent of !cc. |
| 297 | // Negation of the default no_condition (-1) results in a non-default |
| 298 | // no_condition value (-2). As long as tests for no_condition check |
| 299 | // for condition < 0, this will work as expected. |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 300 | inline Condition NegateCondition(Condition cc) { |
| 301 | return static_cast<Condition>(cc ^ 1); |
| 302 | } |
| 303 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 304 | |
| 305 | // Corresponds to transposing the operands of a comparison. |
| 306 | inline Condition ReverseCondition(Condition cc) { |
| 307 | switch (cc) { |
| 308 | case below: |
| 309 | return above; |
| 310 | case above: |
| 311 | return below; |
| 312 | case above_equal: |
| 313 | return below_equal; |
| 314 | case below_equal: |
| 315 | return above_equal; |
| 316 | case less: |
| 317 | return greater; |
| 318 | case greater: |
| 319 | return less; |
| 320 | case greater_equal: |
| 321 | return less_equal; |
| 322 | case less_equal: |
| 323 | return greater_equal; |
| 324 | default: |
| 325 | return cc; |
| 326 | }; |
| 327 | } |
| 328 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 329 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 330 | // ----------------------------------------------------------------------------- |
| 331 | // Machine instruction Immediates |
| 332 | |
| 333 | class Immediate BASE_EMBEDDED { |
| 334 | public: |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 335 | explicit Immediate(int32_t value) : value_(value) {} |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 336 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 337 | private: |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 338 | int32_t value_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 339 | |
| 340 | friend class Assembler; |
| 341 | }; |
| 342 | |
| 343 | |
| 344 | // ----------------------------------------------------------------------------- |
| 345 | // Machine instruction Operands |
| 346 | |
| 347 | enum ScaleFactor { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 348 | times_1 = 0, |
| 349 | times_2 = 1, |
| 350 | times_4 = 2, |
| 351 | times_8 = 3, |
| 352 | times_int_size = times_4, |
| 353 | times_pointer_size = times_8 |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 354 | }; |
| 355 | |
| 356 | |
| 357 | class Operand BASE_EMBEDDED { |
| 358 | public: |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 359 | // [base + disp/r] |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 360 | Operand(Register base, int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 361 | |
| 362 | // [base + index*scale + disp/r] |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 363 | Operand(Register base, |
| 364 | Register index, |
| 365 | ScaleFactor scale, |
| 366 | int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 367 | |
| 368 | // [index*scale + disp/r] |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 369 | Operand(Register index, |
| 370 | ScaleFactor scale, |
| 371 | int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 372 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 373 | // Offset from existing memory operand. |
| 374 | // Offset is added to existing displacement as 32-bit signed values and |
| 375 | // this must not overflow. |
| 376 | Operand(const Operand& base, int32_t offset); |
| 377 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 378 | // Checks whether either base or index register is the given register. |
| 379 | // Does not check the "reg" part of the Operand. |
| 380 | bool AddressUsesRegister(Register reg) const; |
| 381 | |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 382 | // Queries related to the size of the generated instruction. |
| 383 | // Whether the generated instruction will have a REX prefix. |
| 384 | bool requires_rex() const { return rex_ != 0; } |
| 385 | // Size of the ModR/M, SIB and displacement parts of the generated |
| 386 | // instruction. |
| 387 | int operand_size() const { return len_; } |
| 388 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 389 | private: |
| 390 | byte rex_; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 391 | byte buf_[6]; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 392 | // The number of bytes of buf_ in use. |
| 393 | byte len_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 394 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 395 | // Set the ModR/M byte without an encoded 'reg' register. The |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 396 | // register is encoded later as part of the emit_operand operation. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 397 | // 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] | 398 | inline void set_modrm(int mod, Register rm); |
| 399 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 400 | // 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] | 401 | inline void set_sib(ScaleFactor scale, Register index, Register base); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 402 | |
| 403 | // Adds operand displacement fields (offsets added to the memory address). |
| 404 | // Needs to be called after set_sib, not before it. |
| 405 | inline void set_disp8(int disp); |
| 406 | inline void set_disp32(int disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 407 | |
| 408 | friend class Assembler; |
| 409 | }; |
| 410 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 411 | |
| 412 | // CpuFeatures keeps track of which features are supported by the target CPU. |
| 413 | // Supported features must be enabled by a Scope before use. |
| 414 | // Example: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 415 | // if (CpuFeatures::IsSupported(SSE3)) { |
| 416 | // CpuFeatures::Scope fscope(SSE3); |
| 417 | // // Generate SSE3 floating point code. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 418 | // } else { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 419 | // // Generate standard x87 or SSE2 floating point code. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 420 | // } |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 421 | class CpuFeatures : public AllStatic { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 422 | public: |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 423 | // Detect features of the target CPU. Set safe defaults if the serializer |
| 424 | // is enabled (snapshots must be portable). |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 425 | static void Probe(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 426 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 427 | // Check whether a feature is supported by the target CPU. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 428 | static bool IsSupported(CpuFeature f) { |
| 429 | ASSERT(initialized_); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 430 | if (f == SSE2 && !FLAG_enable_sse2) return false; |
| 431 | if (f == SSE3 && !FLAG_enable_sse3) return false; |
| 432 | if (f == CMOV && !FLAG_enable_cmov) return false; |
| 433 | if (f == RDTSC && !FLAG_enable_rdtsc) return false; |
| 434 | if (f == SAHF && !FLAG_enable_sahf) return false; |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 435 | return (supported_ & (V8_UINT64_C(1) << f)) != 0; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 436 | } |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 437 | |
| 438 | #ifdef DEBUG |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 439 | // Check whether a feature is currently enabled. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 440 | static bool IsEnabled(CpuFeature f) { |
| 441 | ASSERT(initialized_); |
| 442 | Isolate* isolate = Isolate::UncheckedCurrent(); |
| 443 | if (isolate == NULL) { |
| 444 | // When no isolate is available, work as if we're running in |
| 445 | // release mode. |
| 446 | return IsSupported(f); |
| 447 | } |
| 448 | uint64_t enabled = isolate->enabled_cpu_features(); |
| 449 | return (enabled & (V8_UINT64_C(1) << f)) != 0; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 450 | } |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 451 | #endif |
| 452 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 453 | // Enable a specified feature within a scope. |
| 454 | class Scope BASE_EMBEDDED { |
| 455 | #ifdef DEBUG |
| 456 | public: |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 457 | explicit Scope(CpuFeature f) { |
| 458 | uint64_t mask = V8_UINT64_C(1) << f; |
| 459 | ASSERT(CpuFeatures::IsSupported(f)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 460 | ASSERT(!Serializer::enabled() || |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 461 | (CpuFeatures::found_by_runtime_probing_ & mask) == 0); |
| 462 | isolate_ = Isolate::UncheckedCurrent(); |
| 463 | old_enabled_ = 0; |
| 464 | if (isolate_ != NULL) { |
| 465 | old_enabled_ = isolate_->enabled_cpu_features(); |
| 466 | isolate_->set_enabled_cpu_features(old_enabled_ | mask); |
| 467 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 468 | } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 469 | ~Scope() { |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 470 | ASSERT_EQ(Isolate::UncheckedCurrent(), isolate_); |
| 471 | if (isolate_ != NULL) { |
| 472 | isolate_->set_enabled_cpu_features(old_enabled_); |
| 473 | } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 474 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 475 | private: |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 476 | Isolate* isolate_; |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 477 | uint64_t old_enabled_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 478 | #else |
| 479 | public: |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 480 | explicit Scope(CpuFeature f) {} |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 481 | #endif |
| 482 | }; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 483 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 484 | private: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 485 | // Safe defaults include SSE2 and CMOV for X64. It is always available, if |
| 486 | // anyone checks, but they shouldn't need to check. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 487 | // The required user mode extensions in X64 are (from AMD64 ABI Table A.1): |
| 488 | // fpu, tsc, cx8, cmov, mmx, sse, sse2, fxsr, syscall |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 489 | static const uint64_t kDefaultCpuFeatures = (1 << SSE2 | 1 << CMOV); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 490 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 491 | #ifdef DEBUG |
| 492 | static bool initialized_; |
| 493 | #endif |
| 494 | static uint64_t supported_; |
| 495 | static uint64_t found_by_runtime_probing_; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 496 | |
| 497 | DISALLOW_COPY_AND_ASSIGN(CpuFeatures); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 498 | }; |
| 499 | |
| 500 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 501 | class Assembler : public AssemblerBase { |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 502 | private: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 503 | // We check before assembling an instruction that there is sufficient |
| 504 | // space to write an instruction and its relocation information. |
| 505 | // 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] | 506 | // the generated instructions. This leaves enough space for the |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 507 | // longest possible x64 instruction, 15 bytes, and the longest possible |
| 508 | // relocation information encoding, RelocInfoWriter::kMaxLength == 16. |
| 509 | // (There is a 15 byte limit on x64 instruction length that rules out some |
| 510 | // otherwise valid instructions.) |
| 511 | // This allows for a single, fast space check per instruction. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 512 | static const int kGap = 32; |
| 513 | |
| 514 | public: |
| 515 | // Create an assembler. Instructions and relocation information are emitted |
| 516 | // into a buffer, with the instructions starting from the beginning and the |
| 517 | // relocation information starting from the end of the buffer. See CodeDesc |
| 518 | // for a detailed comment on the layout (globals.h). |
| 519 | // |
| 520 | // If the provided buffer is NULL, the assembler allocates and grows its own |
| 521 | // buffer, and buffer_size determines the initial buffer size. The buffer is |
| 522 | // owned by the assembler and deallocated upon destruction of the assembler. |
| 523 | // |
| 524 | // If the provided buffer is not NULL, the assembler uses the provided buffer |
| 525 | // for code generation and assumes its size to be buffer_size. If the buffer |
| 526 | // is too small, a fatal error occurs. No deallocation of the buffer is done |
| 527 | // upon destruction of the assembler. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 528 | Assembler(Isolate* isolate, void* buffer, int buffer_size); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 529 | ~Assembler(); |
| 530 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 531 | // Overrides the default provided by FLAG_debug_code. |
| 532 | void set_emit_debug_code(bool value) { emit_debug_code_ = value; } |
| 533 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 534 | // GetCode emits any pending (non-emitted) code and fills the descriptor |
| 535 | // desc. GetCode() is idempotent; it returns the same result if no other |
| 536 | // Assembler functions are invoked in between GetCode() calls. |
| 537 | void GetCode(CodeDesc* desc); |
| 538 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 539 | // Read/Modify the code target in the relative branch/call instruction at pc. |
| 540 | // On the x64 architecture, we use relative jumps with a 32-bit displacement |
| 541 | // to jump to other Code objects in the Code space in the heap. |
| 542 | // Jumps to C functions are done indirectly through a 64-bit register holding |
| 543 | // the absolute address of the target. |
| 544 | // These functions convert between absolute Addresses of Code objects and |
| 545 | // the relative displacements stored in the code. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 546 | static inline Address target_address_at(Address pc); |
| 547 | static inline void set_target_address_at(Address pc, Address target); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 548 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 549 | // 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] | 550 | // This is for calls and branches within generated code. |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 551 | inline static void set_target_at(Address instruction_payload, |
| 552 | Address target) { |
| 553 | set_target_address_at(instruction_payload, target); |
| 554 | } |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 555 | |
| 556 | // This sets the branch destination (which is a load instruction on x64). |
| 557 | // This is for calls and branches to runtime code. |
| 558 | inline static void set_external_target_at(Address instruction_payload, |
| 559 | Address target) { |
| 560 | *reinterpret_cast<Address*>(instruction_payload) = target; |
| 561 | } |
| 562 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 563 | inline Handle<Object> code_target_object_handle_at(Address pc); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 564 | // Number of bytes taken up by the branch target in the code. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 565 | static const int kCallTargetSize = 4; // Use 32-bit displacement. |
| 566 | static const int kExternalTargetSize = 8; // Use 64-bit absolute. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 567 | // 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] | 568 | // and the return address pushed on the stack. |
| 569 | static const int kCallTargetAddressOffset = 4; // Use 32-bit displacement. |
| 570 | // Distance between the start of the JS return sequence and where the |
| 571 | // 32-bit displacement of a near call would be, relative to the pushed |
| 572 | // return address. TODO: Use return sequence length instead. |
| 573 | // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; |
| 574 | static const int kPatchReturnSequenceAddressOffset = 13 - 4; |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 575 | // Distance between start of patched debug break slot and where the |
| 576 | // 32-bit displacement of a near call would be, relative to the pushed |
| 577 | // return address. TODO: Use return sequence length instead. |
| 578 | // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; |
| 579 | static const int kPatchDebugBreakSlotAddressOffset = 13 - 4; |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 580 | // TODO(X64): Rename this, removing the "Real", after changing the above. |
| 581 | static const int kRealPatchReturnSequenceAddressOffset = 2; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 582 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 583 | // Some x64 JS code is padded with int3 to make it large |
| 584 | // enough to hold an instruction when the debugger patches it. |
| 585 | static const int kJumpInstructionLength = 13; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 586 | static const int kCallInstructionLength = 13; |
| 587 | static const int kJSReturnSequenceLength = 13; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 588 | static const int kShortCallInstructionLength = 5; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 589 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 590 | // The debug break slot must be able to contain a call instruction. |
| 591 | static const int kDebugBreakSlotLength = kCallInstructionLength; |
| 592 | |
lrn@chromium.org | 5d00b60 | 2011-01-05 09:51:43 +0000 | [diff] [blame] | 593 | // One byte opcode for test eax,0xXXXXXXXX. |
| 594 | static const byte kTestEaxByte = 0xA9; |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 595 | // One byte opcode for test al, 0xXX. |
| 596 | static const byte kTestAlByte = 0xA8; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 597 | // One byte opcode for nop. |
| 598 | static const byte kNopByte = 0x90; |
| 599 | |
| 600 | // One byte prefix for a short conditional jump. |
| 601 | static const byte kJccShortPrefix = 0x70; |
| 602 | static const byte kJncShortOpcode = kJccShortPrefix | not_carry; |
| 603 | static const byte kJcShortOpcode = kJccShortPrefix | carry; |
| 604 | |
| 605 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 606 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 607 | // --------------------------------------------------------------------------- |
| 608 | // Code generation |
| 609 | // |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 610 | // Function names correspond one-to-one to x64 instruction mnemonics. |
| 611 | // Unless specified otherwise, instructions operate on 64-bit operands. |
| 612 | // |
| 613 | // If we need versions of an assembly instruction that operate on different |
| 614 | // width arguments, we add a single-letter suffix specifying the width. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 615 | // This is done for the following instructions: mov, cmp, inc, dec, |
| 616 | // add, sub, and test. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 617 | // There are no versions of these instructions without the suffix. |
| 618 | // - Instructions on 8-bit (byte) operands/registers have a trailing 'b'. |
| 619 | // - Instructions on 16-bit (word) operands/registers have a trailing 'w'. |
| 620 | // - Instructions on 32-bit (doubleword) operands/registers use 'l'. |
| 621 | // - Instructions on 64-bit (quadword) operands/registers use 'q'. |
| 622 | // |
| 623 | // Some mnemonics, such as "and", are the same as C++ keywords. |
| 624 | // Naming conflicts with C++ keywords are resolved by adding a trailing '_'. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 625 | |
| 626 | // Insert the smallest number of nop instructions |
| 627 | // possible to align the pc offset to a multiple |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 628 | // of m, where m must be a power of 2. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 629 | void Align(int m); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 630 | // Aligns code to something that's optimal for a jump target for the platform. |
| 631 | void CodeTargetAlign(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 632 | |
| 633 | // Stack |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 634 | void pushfq(); |
| 635 | void popfq(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 636 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 637 | void push(Immediate value); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 638 | // Push a 32 bit integer, and guarantee that it is actually pushed as a |
| 639 | // 32 bit value, the normal push will optimize the 8 bit case. |
| 640 | void push_imm32(int32_t imm32); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 641 | void push(Register src); |
| 642 | void push(const Operand& src); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 643 | void push(Handle<Object> handle); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 644 | |
| 645 | void pop(Register dst); |
| 646 | void pop(const Operand& dst); |
| 647 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 648 | void enter(Immediate size); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 649 | void leave(); |
| 650 | |
| 651 | // Moves |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 652 | void movb(Register dst, const Operand& src); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 653 | void movb(Register dst, Immediate imm); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 654 | void movb(const Operand& dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 655 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 656 | // Move the low 16 bits of a 64-bit register value to a 16-bit |
| 657 | // memory location. |
| 658 | void movw(const Operand& dst, Register src); |
| 659 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 660 | void movl(Register dst, Register src); |
| 661 | void movl(Register dst, const Operand& src); |
| 662 | void movl(const Operand& dst, Register src); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 663 | void movl(const Operand& dst, Immediate imm); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 664 | // Load a 32-bit immediate value, zero-extended to 64 bits. |
| 665 | void movl(Register dst, Immediate imm32); |
| 666 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 667 | // Move 64 bit register value to 64-bit memory location. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 668 | void movq(const Operand& dst, Register src); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 669 | // Move 64 bit memory location to 64-bit register value. |
| 670 | void movq(Register dst, const Operand& src); |
| 671 | void movq(Register dst, Register src); |
| 672 | // Sign extends immediate 32-bit value to 64 bits. |
| 673 | void movq(Register dst, Immediate x); |
| 674 | // Move the offset of the label location relative to the current |
| 675 | // position (after the move) to the destination. |
| 676 | void movl(const Operand& dst, Label* src); |
| 677 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 678 | // Move sign extended immediate to memory location. |
| 679 | void movq(const Operand& dst, Immediate value); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 680 | // Instructions to load a 64-bit immediate into a register. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 681 | // All 64-bit immediates must have a relocation mode. |
| 682 | void movq(Register dst, void* ptr, RelocInfo::Mode rmode); |
| 683 | void movq(Register dst, int64_t value, RelocInfo::Mode rmode); |
| 684 | void movq(Register dst, const char* s, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 685 | // Moves the address of the external reference into the register. |
| 686 | void movq(Register dst, ExternalReference ext); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 687 | void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode); |
| 688 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 689 | void movsxbq(Register dst, const Operand& src); |
| 690 | void movsxwq(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 691 | void movsxlq(Register dst, Register src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 692 | void movsxlq(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 693 | void movzxbq(Register dst, const Operand& src); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 694 | void movzxbl(Register dst, const Operand& src); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 695 | void movzxwq(Register dst, const Operand& src); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 696 | void movzxwl(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 697 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 698 | // Repeated moves. |
| 699 | |
| 700 | void repmovsb(); |
| 701 | void repmovsw(); |
| 702 | void repmovsl(); |
| 703 | void repmovsq(); |
| 704 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 705 | // Instruction to load from an immediate 64-bit pointer into RAX. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 706 | void load_rax(void* ptr, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 707 | void load_rax(ExternalReference ext); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 708 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 709 | // Conditional moves. |
| 710 | void cmovq(Condition cc, Register dst, Register src); |
| 711 | void cmovq(Condition cc, Register dst, const Operand& src); |
| 712 | void cmovl(Condition cc, Register dst, Register src); |
| 713 | void cmovl(Condition cc, Register dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 714 | |
| 715 | // Exchange two registers |
| 716 | void xchg(Register dst, Register src); |
| 717 | |
| 718 | // Arithmetics |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 719 | void addl(Register dst, Register src) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 720 | arithmetic_op_32(0x03, dst, src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 721 | } |
| 722 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 723 | void addl(Register dst, Immediate src) { |
| 724 | immediate_arithmetic_op_32(0x0, dst, src); |
| 725 | } |
| 726 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 727 | void addl(Register dst, const Operand& src) { |
| 728 | arithmetic_op_32(0x03, dst, src); |
| 729 | } |
| 730 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 731 | void addl(const Operand& dst, Immediate src) { |
| 732 | immediate_arithmetic_op_32(0x0, dst, src); |
| 733 | } |
| 734 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 735 | void addq(Register dst, Register src) { |
| 736 | arithmetic_op(0x03, dst, src); |
| 737 | } |
| 738 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 739 | void addq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 740 | arithmetic_op(0x03, dst, src); |
| 741 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 742 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 743 | void addq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 744 | arithmetic_op(0x01, src, dst); |
| 745 | } |
| 746 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 747 | void addq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 748 | immediate_arithmetic_op(0x0, dst, src); |
| 749 | } |
| 750 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 751 | void addq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 752 | immediate_arithmetic_op(0x0, dst, src); |
| 753 | } |
| 754 | |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 755 | void sbbl(Register dst, Register src) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 756 | arithmetic_op_32(0x1b, dst, src); |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 757 | } |
| 758 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 759 | void sbbq(Register dst, Register src) { |
| 760 | arithmetic_op(0x1b, dst, src); |
| 761 | } |
| 762 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 763 | void cmpb(Register dst, Immediate src) { |
| 764 | immediate_arithmetic_op_8(0x7, dst, src); |
| 765 | } |
| 766 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 767 | void cmpb_al(Immediate src); |
| 768 | |
| 769 | void cmpb(Register dst, Register src) { |
| 770 | arithmetic_op(0x3A, dst, src); |
| 771 | } |
| 772 | |
| 773 | void cmpb(Register dst, const Operand& src) { |
| 774 | arithmetic_op(0x3A, dst, src); |
| 775 | } |
| 776 | |
| 777 | void cmpb(const Operand& dst, Register src) { |
| 778 | arithmetic_op(0x38, src, dst); |
| 779 | } |
| 780 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 781 | void cmpb(const Operand& dst, Immediate src) { |
| 782 | immediate_arithmetic_op_8(0x7, dst, src); |
| 783 | } |
| 784 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 785 | void cmpw(const Operand& dst, Immediate src) { |
| 786 | immediate_arithmetic_op_16(0x7, dst, src); |
| 787 | } |
| 788 | |
| 789 | void cmpw(Register dst, Immediate src) { |
| 790 | immediate_arithmetic_op_16(0x7, dst, src); |
| 791 | } |
| 792 | |
| 793 | void cmpw(Register dst, const Operand& src) { |
| 794 | arithmetic_op_16(0x3B, dst, src); |
| 795 | } |
| 796 | |
| 797 | void cmpw(Register dst, Register src) { |
| 798 | arithmetic_op_16(0x3B, dst, src); |
| 799 | } |
| 800 | |
| 801 | void cmpw(const Operand& dst, Register src) { |
| 802 | arithmetic_op_16(0x39, src, dst); |
| 803 | } |
| 804 | |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 805 | void cmpl(Register dst, Register src) { |
| 806 | arithmetic_op_32(0x3B, dst, src); |
| 807 | } |
| 808 | |
| 809 | void cmpl(Register dst, const Operand& src) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 810 | arithmetic_op_32(0x3B, dst, src); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | void cmpl(const Operand& dst, Register src) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 814 | arithmetic_op_32(0x39, src, dst); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 815 | } |
| 816 | |
| 817 | void cmpl(Register dst, Immediate src) { |
| 818 | immediate_arithmetic_op_32(0x7, dst, src); |
| 819 | } |
| 820 | |
| 821 | void cmpl(const Operand& dst, Immediate src) { |
| 822 | immediate_arithmetic_op_32(0x7, dst, src); |
| 823 | } |
| 824 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 825 | void cmpq(Register dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 826 | arithmetic_op(0x3B, dst, src); |
| 827 | } |
| 828 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 829 | void cmpq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 830 | arithmetic_op(0x3B, dst, src); |
| 831 | } |
| 832 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 833 | void cmpq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 834 | arithmetic_op(0x39, src, dst); |
| 835 | } |
| 836 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 837 | void cmpq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 838 | immediate_arithmetic_op(0x7, dst, src); |
| 839 | } |
| 840 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 841 | void cmpq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 842 | immediate_arithmetic_op(0x7, dst, src); |
| 843 | } |
| 844 | |
| 845 | void and_(Register dst, Register src) { |
| 846 | arithmetic_op(0x23, dst, src); |
| 847 | } |
| 848 | |
| 849 | void and_(Register dst, const Operand& src) { |
| 850 | arithmetic_op(0x23, dst, src); |
| 851 | } |
| 852 | |
| 853 | void and_(const Operand& dst, Register src) { |
| 854 | arithmetic_op(0x21, src, dst); |
| 855 | } |
| 856 | |
| 857 | void and_(Register dst, Immediate src) { |
| 858 | immediate_arithmetic_op(0x4, dst, src); |
| 859 | } |
| 860 | |
| 861 | void and_(const Operand& dst, Immediate src) { |
| 862 | immediate_arithmetic_op(0x4, dst, src); |
| 863 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 864 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 865 | void andl(Register dst, Immediate src) { |
| 866 | immediate_arithmetic_op_32(0x4, dst, src); |
| 867 | } |
| 868 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 869 | void andl(Register dst, Register src) { |
| 870 | arithmetic_op_32(0x23, dst, src); |
| 871 | } |
| 872 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 873 | void andl(Register dst, const Operand& src) { |
| 874 | arithmetic_op_32(0x23, dst, src); |
| 875 | } |
| 876 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 877 | void andb(Register dst, Immediate src) { |
| 878 | immediate_arithmetic_op_8(0x4, dst, src); |
| 879 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 880 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 881 | void decq(Register dst); |
| 882 | void decq(const Operand& dst); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 883 | void decl(Register dst); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 884 | void decl(const Operand& dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 885 | void decb(Register dst); |
| 886 | void decb(const Operand& dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 887 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 888 | // Sign-extends rax into rdx:rax. |
| 889 | void cqo(); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 890 | // Sign-extends eax into edx:eax. |
| 891 | void cdq(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 892 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 893 | // Divide rdx:rax by src. Quotient in rax, remainder in rdx. |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 894 | void idivq(Register src); |
| 895 | // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. |
| 896 | void idivl(Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 897 | |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 898 | // Signed multiply instructions. |
| 899 | void imul(Register src); // rdx:rax = rax * src. |
| 900 | void imul(Register dst, Register src); // dst = dst * src. |
| 901 | void imul(Register dst, const Operand& src); // dst = dst * src. |
| 902 | void imul(Register dst, Register src, Immediate imm); // dst = src * imm. |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 903 | // Signed 32-bit multiply instructions. |
| 904 | void imull(Register dst, Register src); // dst = dst * src. |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 905 | void imull(Register dst, const Operand& src); // dst = dst * src. |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 906 | void imull(Register dst, Register src, Immediate imm); // dst = src * imm. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 907 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 908 | void incq(Register dst); |
| 909 | void incq(const Operand& dst); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 910 | void incl(Register dst); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 911 | void incl(const Operand& dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 912 | |
| 913 | void lea(Register dst, const Operand& src); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 914 | void leal(Register dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 915 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 916 | // Multiply rax by src, put the result in rdx:rax. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 917 | void mul(Register src); |
| 918 | |
| 919 | void neg(Register dst); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 920 | void neg(const Operand& dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 921 | void negl(Register dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 922 | |
| 923 | void not_(Register dst); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 924 | void not_(const Operand& dst); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 925 | void notl(Register dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 926 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 927 | void or_(Register dst, Register src) { |
| 928 | arithmetic_op(0x0B, dst, src); |
| 929 | } |
| 930 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 931 | void orl(Register dst, Register src) { |
| 932 | arithmetic_op_32(0x0B, dst, src); |
| 933 | } |
| 934 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 935 | void or_(Register dst, const Operand& src) { |
| 936 | arithmetic_op(0x0B, dst, src); |
| 937 | } |
| 938 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 939 | void orl(Register dst, const Operand& src) { |
| 940 | arithmetic_op_32(0x0B, dst, src); |
| 941 | } |
| 942 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 943 | void or_(const Operand& dst, Register src) { |
| 944 | arithmetic_op(0x09, src, dst); |
| 945 | } |
| 946 | |
| 947 | void or_(Register dst, Immediate src) { |
| 948 | immediate_arithmetic_op(0x1, dst, src); |
| 949 | } |
| 950 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 951 | void orl(Register dst, Immediate src) { |
| 952 | immediate_arithmetic_op_32(0x1, dst, src); |
| 953 | } |
| 954 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 955 | void or_(const Operand& dst, Immediate src) { |
| 956 | immediate_arithmetic_op(0x1, dst, src); |
| 957 | } |
| 958 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 959 | void orl(const Operand& dst, Immediate src) { |
| 960 | immediate_arithmetic_op_32(0x1, dst, src); |
| 961 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 962 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 963 | |
| 964 | void rcl(Register dst, Immediate imm8) { |
| 965 | shift(dst, imm8, 0x2); |
| 966 | } |
| 967 | |
| 968 | void rol(Register dst, Immediate imm8) { |
| 969 | shift(dst, imm8, 0x0); |
| 970 | } |
| 971 | |
| 972 | void rcr(Register dst, Immediate imm8) { |
| 973 | shift(dst, imm8, 0x3); |
| 974 | } |
| 975 | |
| 976 | void ror(Register dst, Immediate imm8) { |
| 977 | shift(dst, imm8, 0x1); |
| 978 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 979 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 980 | // Shifts dst:src left by cl bits, affecting only dst. |
| 981 | void shld(Register dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 982 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 983 | // Shifts src:dst right by cl bits, affecting only dst. |
| 984 | void shrd(Register dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 985 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 986 | // Shifts dst right, duplicating sign bit, by shift_amount bits. |
| 987 | // Shifting by 1 is handled efficiently. |
| 988 | void sar(Register dst, Immediate shift_amount) { |
| 989 | shift(dst, shift_amount, 0x7); |
| 990 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 991 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 992 | // Shifts dst right, duplicating sign bit, by shift_amount bits. |
| 993 | // Shifting by 1 is handled efficiently. |
| 994 | void sarl(Register dst, Immediate shift_amount) { |
| 995 | shift_32(dst, shift_amount, 0x7); |
| 996 | } |
| 997 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 998 | // Shifts dst right, duplicating sign bit, by cl % 64 bits. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 999 | void sar_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1000 | shift(dst, 0x7); |
| 1001 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1002 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1003 | // Shifts dst right, duplicating sign bit, by cl % 64 bits. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1004 | void sarl_cl(Register dst) { |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1005 | shift_32(dst, 0x7); |
| 1006 | } |
| 1007 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1008 | void shl(Register dst, Immediate shift_amount) { |
| 1009 | shift(dst, shift_amount, 0x4); |
| 1010 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1011 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1012 | void shl_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1013 | shift(dst, 0x4); |
| 1014 | } |
| 1015 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1016 | void shll_cl(Register dst) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1017 | shift_32(dst, 0x4); |
| 1018 | } |
| 1019 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1020 | void shll(Register dst, Immediate shift_amount) { |
| 1021 | shift_32(dst, shift_amount, 0x4); |
| 1022 | } |
| 1023 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1024 | void shr(Register dst, Immediate shift_amount) { |
| 1025 | shift(dst, shift_amount, 0x5); |
| 1026 | } |
| 1027 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1028 | void shr_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1029 | shift(dst, 0x5); |
| 1030 | } |
| 1031 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1032 | void shrl_cl(Register dst) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1033 | shift_32(dst, 0x5); |
| 1034 | } |
| 1035 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1036 | void shrl(Register dst, Immediate shift_amount) { |
| 1037 | shift_32(dst, shift_amount, 0x5); |
| 1038 | } |
| 1039 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1040 | void store_rax(void* dst, RelocInfo::Mode mode); |
| 1041 | void store_rax(ExternalReference ref); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1042 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1043 | void subq(Register dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1044 | arithmetic_op(0x2B, dst, src); |
| 1045 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1046 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1047 | void subq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1048 | arithmetic_op(0x2B, dst, src); |
| 1049 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1050 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1051 | void subq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1052 | arithmetic_op(0x29, src, dst); |
| 1053 | } |
| 1054 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1055 | void subq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1056 | immediate_arithmetic_op(0x5, dst, src); |
| 1057 | } |
| 1058 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1059 | void subq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1060 | immediate_arithmetic_op(0x5, dst, src); |
| 1061 | } |
| 1062 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1063 | void subl(Register dst, Register src) { |
| 1064 | arithmetic_op_32(0x2B, dst, src); |
| 1065 | } |
| 1066 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1067 | void subl(Register dst, const Operand& src) { |
| 1068 | arithmetic_op_32(0x2B, dst, src); |
| 1069 | } |
| 1070 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1071 | void subl(const Operand& dst, Immediate src) { |
| 1072 | immediate_arithmetic_op_32(0x5, dst, src); |
| 1073 | } |
| 1074 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1075 | void subl(Register dst, Immediate src) { |
| 1076 | immediate_arithmetic_op_32(0x5, dst, src); |
| 1077 | } |
| 1078 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1079 | void subb(Register dst, Immediate src) { |
| 1080 | immediate_arithmetic_op_8(0x5, dst, src); |
| 1081 | } |
| 1082 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1083 | void testb(Register dst, Register src); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1084 | void testb(Register reg, Immediate mask); |
| 1085 | void testb(const Operand& op, Immediate mask); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1086 | void testb(const Operand& op, Register reg); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1087 | void testl(Register dst, Register src); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1088 | void testl(Register reg, Immediate mask); |
| 1089 | void testl(const Operand& op, Immediate mask); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1090 | void testq(const Operand& op, Register reg); |
| 1091 | void testq(Register dst, Register src); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1092 | void testq(Register dst, Immediate mask); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1093 | |
| 1094 | void xor_(Register dst, Register src) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1095 | if (dst.code() == src.code()) { |
| 1096 | arithmetic_op_32(0x33, dst, src); |
| 1097 | } else { |
| 1098 | arithmetic_op(0x33, dst, src); |
| 1099 | } |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1102 | void xorl(Register dst, Register src) { |
| 1103 | arithmetic_op_32(0x33, dst, src); |
| 1104 | } |
| 1105 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1106 | void xorl(Register dst, const Operand& src) { |
| 1107 | arithmetic_op_32(0x33, dst, src); |
| 1108 | } |
| 1109 | |
| 1110 | void xorl(Register dst, Immediate src) { |
| 1111 | immediate_arithmetic_op_32(0x6, dst, src); |
| 1112 | } |
| 1113 | |
| 1114 | void xorl(const Operand& dst, Immediate src) { |
| 1115 | immediate_arithmetic_op_32(0x6, dst, src); |
| 1116 | } |
| 1117 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1118 | void xor_(Register dst, const Operand& src) { |
| 1119 | arithmetic_op(0x33, dst, src); |
| 1120 | } |
| 1121 | |
| 1122 | void xor_(const Operand& dst, Register src) { |
| 1123 | arithmetic_op(0x31, src, dst); |
| 1124 | } |
| 1125 | |
| 1126 | void xor_(Register dst, Immediate src) { |
| 1127 | immediate_arithmetic_op(0x6, dst, src); |
| 1128 | } |
| 1129 | |
| 1130 | void xor_(const Operand& dst, Immediate src) { |
| 1131 | immediate_arithmetic_op(0x6, dst, src); |
| 1132 | } |
| 1133 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1134 | // Bit operations. |
| 1135 | void bt(const Operand& dst, Register src); |
| 1136 | void bts(const Operand& dst, Register src); |
| 1137 | |
| 1138 | // Miscellaneous |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1139 | void clc(); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1140 | void cld(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1141 | void cpuid(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1142 | void hlt(); |
| 1143 | void int3(); |
| 1144 | void nop(); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1145 | void nop(int n); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1146 | void rdtsc(); |
| 1147 | void ret(int imm16); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1148 | void setcc(Condition cc, Register reg); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1149 | |
| 1150 | // Label operations & relative jumps (PPUM Appendix D) |
| 1151 | // |
| 1152 | // Takes a branch opcode (cc) and a label (L) and generates |
| 1153 | // either a backward branch or a forward branch and links it |
| 1154 | // to the label fixup chain. Usage: |
| 1155 | // |
| 1156 | // Label L; // unbound label |
| 1157 | // j(cc, &L); // forward branch to unbound label |
| 1158 | // bind(&L); // bind label to the current pc |
| 1159 | // j(cc, &L); // backward branch to bound label |
| 1160 | // bind(&L); // illegal: a label may be bound only once |
| 1161 | // |
| 1162 | // Note: The same Label can be used for forward and backward branches |
| 1163 | // but it may be bound only once. |
| 1164 | |
| 1165 | void bind(Label* L); // binds an unbound label L to the current code position |
| 1166 | |
| 1167 | // Calls |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1168 | // Call near relative 32-bit displacement, relative to next instruction. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1169 | void call(Label* L); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1170 | void call(Handle<Code> target, |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1171 | RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1172 | unsigned ast_id = kNoASTId); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1173 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1174 | // Calls directly to the given address using a relative offset. |
| 1175 | // Should only ever be used in Code objects for calls within the |
| 1176 | // same Code object. Should not be used when generating new code (use labels), |
| 1177 | // but only when patching existing code. |
| 1178 | void call(Address target); |
| 1179 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1180 | // Call near absolute indirect, address in register |
| 1181 | void call(Register adr); |
| 1182 | |
| 1183 | // Call near indirect |
| 1184 | void call(const Operand& operand); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1185 | |
| 1186 | // Jumps |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1187 | // Jump short or near relative. |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1188 | // Use a 32-bit signed displacement. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1189 | // Unconditional jump to L |
| 1190 | void jmp(Label* L, Label::Distance distance = Label::kFar); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1191 | void jmp(Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1192 | |
| 1193 | // Jump near absolute indirect (r64) |
| 1194 | void jmp(Register adr); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1195 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1196 | // Jump near absolute indirect (m64) |
| 1197 | void jmp(const Operand& src); |
| 1198 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1199 | // Conditional jumps |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1200 | void j(Condition cc, |
| 1201 | Label* L, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1202 | Label::Distance distance = Label::kFar); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1203 | void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1204 | |
| 1205 | // Floating-point operations |
| 1206 | void fld(int i); |
| 1207 | |
| 1208 | void fld1(); |
| 1209 | void fldz(); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1210 | void fldpi(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1211 | void fldln2(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1212 | |
| 1213 | void fld_s(const Operand& adr); |
| 1214 | void fld_d(const Operand& adr); |
| 1215 | |
| 1216 | void fstp_s(const Operand& adr); |
| 1217 | void fstp_d(const Operand& adr); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1218 | void fstp(int index); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1219 | |
| 1220 | void fild_s(const Operand& adr); |
| 1221 | void fild_d(const Operand& adr); |
| 1222 | |
| 1223 | void fist_s(const Operand& adr); |
| 1224 | |
| 1225 | void fistp_s(const Operand& adr); |
| 1226 | void fistp_d(const Operand& adr); |
| 1227 | |
| 1228 | void fisttp_s(const Operand& adr); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1229 | void fisttp_d(const Operand& adr); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1230 | |
| 1231 | void fabs(); |
| 1232 | void fchs(); |
| 1233 | |
| 1234 | void fadd(int i); |
| 1235 | void fsub(int i); |
| 1236 | void fmul(int i); |
| 1237 | void fdiv(int i); |
| 1238 | |
| 1239 | void fisub_s(const Operand& adr); |
| 1240 | |
| 1241 | void faddp(int i = 1); |
| 1242 | void fsubp(int i = 1); |
| 1243 | void fsubrp(int i = 1); |
| 1244 | void fmulp(int i = 1); |
| 1245 | void fdivp(int i = 1); |
| 1246 | void fprem(); |
| 1247 | void fprem1(); |
| 1248 | |
| 1249 | void fxch(int i = 1); |
| 1250 | void fincstp(); |
| 1251 | void ffree(int i = 0); |
| 1252 | |
| 1253 | void ftst(); |
| 1254 | void fucomp(int i); |
| 1255 | void fucompp(); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1256 | void fucomi(int i); |
| 1257 | void fucomip(); |
| 1258 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1259 | void fcompp(); |
| 1260 | void fnstsw_ax(); |
| 1261 | void fwait(); |
| 1262 | void fnclex(); |
| 1263 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1264 | void fsin(); |
| 1265 | void fcos(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1266 | void fyl2x(); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1267 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1268 | void frndint(); |
| 1269 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1270 | void sahf(); |
| 1271 | |
| 1272 | // SSE2 instructions |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1273 | void movd(XMMRegister dst, Register src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1274 | void movd(Register dst, XMMRegister src); |
| 1275 | void movq(XMMRegister dst, Register src); |
| 1276 | void movq(Register dst, XMMRegister src); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1277 | void movq(XMMRegister dst, XMMRegister src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1278 | void extractps(Register dst, XMMRegister src, byte imm8); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1279 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1280 | // Don't use this unless it's important to keep the |
| 1281 | // top half of the destination register unchanged. |
| 1282 | // Used movaps when moving double values and movq for integer |
| 1283 | // values in xmm registers. |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1284 | void movsd(XMMRegister dst, XMMRegister src); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1285 | |
| 1286 | void movsd(const Operand& dst, XMMRegister src); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1287 | void movsd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1288 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1289 | void movdqa(const Operand& dst, XMMRegister src); |
| 1290 | void movdqa(XMMRegister dst, const Operand& src); |
| 1291 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1292 | void movapd(XMMRegister dst, XMMRegister src); |
| 1293 | void movaps(XMMRegister dst, XMMRegister src); |
| 1294 | |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1295 | void movss(XMMRegister dst, const Operand& src); |
| 1296 | void movss(const Operand& dst, XMMRegister src); |
| 1297 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1298 | void cvttss2si(Register dst, const Operand& src); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1299 | void cvttss2si(Register dst, XMMRegister src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1300 | void cvttsd2si(Register dst, const Operand& src); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1301 | void cvttsd2si(Register dst, XMMRegister src); |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 1302 | void cvttsd2siq(Register dst, XMMRegister src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1303 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1304 | void cvtlsi2sd(XMMRegister dst, const Operand& src); |
| 1305 | void cvtlsi2sd(XMMRegister dst, Register src); |
| 1306 | void cvtqsi2sd(XMMRegister dst, const Operand& src); |
| 1307 | void cvtqsi2sd(XMMRegister dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1308 | |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1309 | void cvtlsi2ss(XMMRegister dst, Register src); |
| 1310 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1311 | void cvtss2sd(XMMRegister dst, XMMRegister src); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1312 | void cvtss2sd(XMMRegister dst, const Operand& src); |
| 1313 | void cvtsd2ss(XMMRegister dst, XMMRegister src); |
| 1314 | |
| 1315 | void cvtsd2si(Register dst, XMMRegister src); |
| 1316 | void cvtsd2siq(Register dst, XMMRegister src); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1317 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1318 | void addsd(XMMRegister dst, XMMRegister src); |
| 1319 | void subsd(XMMRegister dst, XMMRegister src); |
| 1320 | void mulsd(XMMRegister dst, XMMRegister src); |
| 1321 | void divsd(XMMRegister dst, XMMRegister src); |
| 1322 | |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 1323 | void andpd(XMMRegister dst, XMMRegister src); |
| 1324 | void orpd(XMMRegister dst, XMMRegister src); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1325 | void xorpd(XMMRegister dst, XMMRegister src); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1326 | void xorps(XMMRegister dst, XMMRegister src); |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 1327 | void sqrtsd(XMMRegister dst, XMMRegister src); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1328 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1329 | void ucomisd(XMMRegister dst, XMMRegister src); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1330 | void ucomisd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1331 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1332 | enum RoundingMode { |
| 1333 | kRoundToNearest = 0x0, |
| 1334 | kRoundDown = 0x1, |
| 1335 | kRoundUp = 0x2, |
| 1336 | kRoundToZero = 0x3 |
| 1337 | }; |
| 1338 | |
| 1339 | void roundsd(XMMRegister dst, XMMRegister src, RoundingMode mode); |
| 1340 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1341 | void movmskpd(Register dst, XMMRegister src); |
| 1342 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1343 | // 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] | 1344 | void emit_sse_operand(XMMRegister dst, XMMRegister src); |
| 1345 | void emit_sse_operand(XMMRegister reg, const Operand& adr); |
| 1346 | void emit_sse_operand(XMMRegister dst, Register src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1347 | void emit_sse_operand(Register dst, XMMRegister src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1348 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1349 | // Debugging |
| 1350 | void Print(); |
| 1351 | |
| 1352 | // Check the code size generated from label to here. |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1353 | int SizeOfCodeGeneratedSince(Label* label) { |
| 1354 | return pc_offset() - label->pos(); |
| 1355 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1356 | |
| 1357 | // Mark address of the ExitJSFrame code. |
| 1358 | void RecordJSReturn(); |
| 1359 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1360 | // Mark address of a debug break slot. |
| 1361 | void RecordDebugBreakSlot(); |
| 1362 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1363 | // 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] | 1364 | // Use --code-comments to enable. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 1365 | void RecordComment(const char* msg, bool force = false); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1366 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1367 | // Writes a single word of data in the code stream. |
| 1368 | // Used for inline tables, e.g., jump-tables. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1369 | void db(uint8_t data); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1370 | void dd(uint32_t data); |
| 1371 | |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 1372 | int pc_offset() const { return static_cast<int>(pc_ - buffer_); } |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 1373 | |
| 1374 | PositionsRecorder* positions_recorder() { return &positions_recorder_; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1375 | |
| 1376 | // Check if there is less than kGap bytes available in the buffer. |
| 1377 | // If this is the case, we need to grow the buffer before emitting |
| 1378 | // an instruction or relocation information. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1379 | inline bool buffer_overflow() const { |
| 1380 | return pc_ >= reloc_info_writer.pos() - kGap; |
| 1381 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1382 | |
| 1383 | // Get the number of bytes available in the buffer. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1384 | inline int available_space() const { |
| 1385 | return static_cast<int>(reloc_info_writer.pos() - pc_); |
| 1386 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1387 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1388 | static bool IsNop(Address addr) { return *addr == 0x90; } |
| 1389 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1390 | // Avoid overflows for displacements etc. |
| 1391 | static const int kMaximalBufferSize = 512*MB; |
| 1392 | static const int kMinimalBufferSize = 4*KB; |
| 1393 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1394 | protected: |
| 1395 | bool emit_debug_code() const { return emit_debug_code_; } |
| 1396 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1397 | private: |
| 1398 | byte* addr_at(int pos) { return buffer_ + pos; } |
| 1399 | byte byte_at(int pos) { return buffer_[pos]; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 1400 | void set_byte_at(int pos, byte value) { buffer_[pos] = value; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1401 | uint32_t long_at(int pos) { |
| 1402 | return *reinterpret_cast<uint32_t*>(addr_at(pos)); |
| 1403 | } |
| 1404 | void long_at_put(int pos, uint32_t x) { |
| 1405 | *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; |
| 1406 | } |
| 1407 | |
| 1408 | // code emission |
| 1409 | void GrowBuffer(); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1410 | |
| 1411 | void emit(byte x) { *pc_++ = x; } |
| 1412 | inline void emitl(uint32_t x); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1413 | inline void emitq(uint64_t x, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1414 | inline void emitw(uint16_t x); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1415 | inline void emit_code_target(Handle<Code> target, |
| 1416 | RelocInfo::Mode rmode, |
| 1417 | unsigned ast_id = kNoASTId); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1418 | void emit(Immediate x) { emitl(x.value_); } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1419 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1420 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1421 | // the top bit of both register codes. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1422 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
| 1423 | // REX.W is set. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1424 | inline void emit_rex_64(XMMRegister reg, Register rm_reg); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1425 | inline void emit_rex_64(Register reg, XMMRegister rm_reg); |
| 1426 | inline void emit_rex_64(Register reg, Register rm_reg); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1427 | |
| 1428 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1429 | // the top bit of the destination, index, and base register codes. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1430 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1431 | // register is used for REX.B, and the high bit of op's index register |
| 1432 | // is used for REX.X. REX.W is set. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1433 | inline void emit_rex_64(Register reg, const Operand& op); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1434 | inline void emit_rex_64(XMMRegister reg, const Operand& op); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1435 | |
| 1436 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1437 | // the top bit of the register code. |
| 1438 | // The high bit of register is used for REX.B. |
| 1439 | // REX.W is set and REX.R and REX.X are clear. |
| 1440 | inline void emit_rex_64(Register rm_reg); |
| 1441 | |
| 1442 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1443 | // the top bit of the index and base register codes. |
| 1444 | // The high bit of op's base register is used for REX.B, and the high |
| 1445 | // bit of op's index register is used for REX.X. |
| 1446 | // REX.W is set and REX.R clear. |
| 1447 | inline void emit_rex_64(const Operand& op); |
| 1448 | |
| 1449 | // Emit a REX prefix that only sets REX.W to choose a 64-bit operand size. |
| 1450 | void emit_rex_64() { emit(0x48); } |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1451 | |
| 1452 | // 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] | 1453 | // REX.W is clear. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1454 | inline void emit_rex_32(Register reg, Register rm_reg); |
| 1455 | |
| 1456 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1457 | // register is used for REX.B, and the high bit of op's index register |
| 1458 | // is used for REX.X. REX.W is cleared. |
| 1459 | inline void emit_rex_32(Register reg, const Operand& op); |
| 1460 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1461 | // High bit of rm_reg goes to REX.B. |
| 1462 | // REX.W, REX.R and REX.X are clear. |
| 1463 | inline void emit_rex_32(Register rm_reg); |
| 1464 | |
| 1465 | // High bit of base goes to REX.B and high bit of index to REX.X. |
| 1466 | // REX.W and REX.R are clear. |
| 1467 | inline void emit_rex_32(const Operand& op); |
| 1468 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1469 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
| 1470 | // REX.W is cleared. If no REX bits are set, no byte is emitted. |
| 1471 | inline void emit_optional_rex_32(Register reg, Register rm_reg); |
| 1472 | |
| 1473 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1474 | // register is used for REX.B, and the high bit of op's index register |
| 1475 | // is used for REX.X. REX.W is cleared. If no REX bits are set, nothing |
| 1476 | // is emitted. |
| 1477 | inline void emit_optional_rex_32(Register reg, const Operand& op); |
| 1478 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1479 | // As for emit_optional_rex_32(Register, Register), except that |
| 1480 | // the registers are XMM registers. |
| 1481 | inline void emit_optional_rex_32(XMMRegister reg, XMMRegister base); |
| 1482 | |
| 1483 | // As for emit_optional_rex_32(Register, Register), except that |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1484 | // one of the registers is an XMM registers. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1485 | inline void emit_optional_rex_32(XMMRegister reg, Register base); |
| 1486 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1487 | // As for emit_optional_rex_32(Register, Register), except that |
| 1488 | // one of the registers is an XMM registers. |
| 1489 | inline void emit_optional_rex_32(Register reg, XMMRegister base); |
| 1490 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1491 | // As for emit_optional_rex_32(Register, const Operand&), except that |
| 1492 | // the register is an XMM register. |
| 1493 | inline void emit_optional_rex_32(XMMRegister reg, const Operand& op); |
| 1494 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1495 | // Optionally do as emit_rex_32(Register) if the register number has |
| 1496 | // the high bit set. |
| 1497 | inline void emit_optional_rex_32(Register rm_reg); |
| 1498 | |
| 1499 | // Optionally do as emit_rex_32(const Operand&) if the operand register |
| 1500 | // numbers have a high bit set. |
| 1501 | inline void emit_optional_rex_32(const Operand& op); |
| 1502 | |
| 1503 | |
| 1504 | // Emit the ModR/M byte, and optionally the SIB byte and |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1505 | // 1- or 4-byte offset for a memory operand. Also encodes |
| 1506 | // the second operand of the operation, a register or operation |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1507 | // subcode, into the reg field of the ModR/M byte. |
| 1508 | void emit_operand(Register reg, const Operand& adr) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1509 | emit_operand(reg.low_bits(), adr); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1510 | } |
| 1511 | |
| 1512 | // Emit the ModR/M byte, and optionally the SIB byte and |
| 1513 | // 1- or 4-byte offset for a memory operand. Also used to encode |
| 1514 | // a three-bit opcode extension into the ModR/M byte. |
| 1515 | void emit_operand(int rm, const Operand& adr); |
| 1516 | |
| 1517 | // Emit a ModR/M byte with registers coded in the reg and rm_reg fields. |
| 1518 | void emit_modrm(Register reg, Register rm_reg) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1519 | emit(0xC0 | reg.low_bits() << 3 | rm_reg.low_bits()); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1520 | } |
| 1521 | |
| 1522 | // Emit a ModR/M byte with an operation subcode in the reg field and |
| 1523 | // a register in the rm_reg field. |
| 1524 | void emit_modrm(int code, Register rm_reg) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1525 | ASSERT(is_uint3(code)); |
| 1526 | emit(0xC0 | code << 3 | rm_reg.low_bits()); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1527 | } |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1528 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1529 | // Emit the code-object-relative offset of the label's position |
| 1530 | inline void emit_code_relative_offset(Label* label); |
| 1531 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1532 | // Emit machine code for one of the operations ADD, ADC, SUB, SBC, |
| 1533 | // AND, OR, XOR, or CMP. The encodings of these operations are all |
| 1534 | // 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] | 1535 | // ModR/M byte. |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1536 | void arithmetic_op_16(byte opcode, Register reg, Register rm_reg); |
| 1537 | void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg); |
| 1538 | void arithmetic_op_32(byte opcode, Register reg, Register rm_reg); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1539 | 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] | 1540 | void arithmetic_op(byte opcode, Register reg, Register rm_reg); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1541 | void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1542 | void immediate_arithmetic_op(byte subcode, Register dst, Immediate src); |
| 1543 | void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1544 | // Operate on a byte in memory or register. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1545 | void immediate_arithmetic_op_8(byte subcode, |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1546 | Register dst, |
| 1547 | Immediate src); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1548 | void immediate_arithmetic_op_8(byte subcode, |
| 1549 | const Operand& dst, |
| 1550 | Immediate src); |
| 1551 | // Operate on a word in memory or register. |
| 1552 | void immediate_arithmetic_op_16(byte subcode, |
| 1553 | Register dst, |
| 1554 | Immediate src); |
| 1555 | void immediate_arithmetic_op_16(byte subcode, |
| 1556 | const Operand& dst, |
| 1557 | Immediate src); |
| 1558 | // Operate on a 32-bit word in memory or register. |
| 1559 | void immediate_arithmetic_op_32(byte subcode, |
| 1560 | Register dst, |
| 1561 | Immediate src); |
| 1562 | void immediate_arithmetic_op_32(byte subcode, |
| 1563 | const Operand& dst, |
| 1564 | Immediate src); |
| 1565 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1566 | // Emit machine code for a shift operation. |
| 1567 | void shift(Register dst, Immediate shift_amount, int subcode); |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1568 | void shift_32(Register dst, Immediate shift_amount, int subcode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1569 | // Shift dst by cl % 64 bits. |
| 1570 | void shift(Register dst, int subcode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1571 | void shift_32(Register dst, int subcode); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1572 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1573 | void emit_farith(int b1, int b2, int i); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1574 | |
| 1575 | // labels |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1576 | // void print(Label* L); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1577 | void bind_to(Label* L, int pos); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1578 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1579 | // record reloc info for current pc_ |
| 1580 | void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); |
| 1581 | |
| 1582 | friend class CodePatcher; |
| 1583 | friend class EnsureSpace; |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1584 | friend class RegExpMacroAssemblerX64; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1585 | |
| 1586 | // Code buffer: |
| 1587 | // The buffer into which code and relocation info are generated. |
| 1588 | byte* buffer_; |
| 1589 | int buffer_size_; |
| 1590 | // True if the assembler owns the buffer, false if buffer is external. |
| 1591 | bool own_buffer_; |
| 1592 | |
| 1593 | // code generation |
| 1594 | byte* pc_; // the program counter; moves forward |
| 1595 | RelocInfoWriter reloc_info_writer; |
| 1596 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1597 | List< Handle<Code> > code_targets_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1598 | |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 1599 | PositionsRecorder positions_recorder_; |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1600 | |
| 1601 | bool emit_debug_code_; |
| 1602 | |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 1603 | friend class PositionsRecorder; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1604 | }; |
| 1605 | |
| 1606 | |
| 1607 | // Helper class that ensures that there is enough space for generating |
| 1608 | // instructions and relocation information. The constructor makes |
| 1609 | // sure that there is enough space and (in debug mode) the destructor |
| 1610 | // checks that we did not generate too much. |
| 1611 | class EnsureSpace BASE_EMBEDDED { |
| 1612 | public: |
| 1613 | explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1614 | if (assembler_->buffer_overflow()) assembler_->GrowBuffer(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1615 | #ifdef DEBUG |
| 1616 | space_before_ = assembler_->available_space(); |
| 1617 | #endif |
| 1618 | } |
| 1619 | |
| 1620 | #ifdef DEBUG |
| 1621 | ~EnsureSpace() { |
| 1622 | int bytes_generated = space_before_ - assembler_->available_space(); |
| 1623 | ASSERT(bytes_generated < assembler_->kGap); |
| 1624 | } |
| 1625 | #endif |
| 1626 | |
| 1627 | private: |
| 1628 | Assembler* assembler_; |
| 1629 | #ifdef DEBUG |
| 1630 | int space_before_; |
| 1631 | #endif |
| 1632 | }; |
| 1633 | |
| 1634 | } } // namespace v8::internal |
| 1635 | |
| 1636 | #endif // V8_X64_ASSEMBLER_X64_H_ |