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. |
| 33 | // Copyright 2006-2009 the V8 project authors. All rights reserved. |
| 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 { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 91 | static Register toRegister(int code) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 92 | Register r = { code }; |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 93 | return r; |
| 94 | } |
| 95 | bool is_valid() const { return 0 <= code_ && code_ < 16; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 96 | bool is(Register reg) const { return code_ == reg.code_; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 97 | int code() const { |
| 98 | ASSERT(is_valid()); |
| 99 | return code_; |
| 100 | } |
| 101 | int bit() const { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 102 | return 1 << code_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 103 | } |
| 104 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 105 | // Return the high bit of the register code as a 0 or 1. Used often |
| 106 | // when constructing the REX prefix byte. |
| 107 | int high_bit() const { |
| 108 | return code_ >> 3; |
| 109 | } |
| 110 | // Return the 3 low bits of the register code. Used when encoding registers |
| 111 | // in modR/M, SIB, and opcode bytes. |
| 112 | int low_bits() const { |
| 113 | return code_ & 0x7; |
| 114 | } |
| 115 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 116 | // Unfortunately we can't make this private in a struct when initializing |
| 117 | // by assignment. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 118 | int code_; |
| 119 | }; |
| 120 | |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 121 | const Register rax = { 0 }; |
| 122 | const Register rcx = { 1 }; |
| 123 | const Register rdx = { 2 }; |
| 124 | const Register rbx = { 3 }; |
| 125 | const Register rsp = { 4 }; |
| 126 | const Register rbp = { 5 }; |
| 127 | const Register rsi = { 6 }; |
| 128 | const Register rdi = { 7 }; |
| 129 | const Register r8 = { 8 }; |
| 130 | const Register r9 = { 9 }; |
| 131 | const Register r10 = { 10 }; |
| 132 | const Register r11 = { 11 }; |
| 133 | const Register r12 = { 12 }; |
| 134 | const Register r13 = { 13 }; |
| 135 | const Register r14 = { 14 }; |
| 136 | const Register r15 = { 15 }; |
| 137 | const Register no_reg = { -1 }; |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 138 | |
| 139 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 140 | struct XMMRegister { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 141 | bool is_valid() const { return 0 <= code_ && code_ < 16; } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 142 | int code() const { |
| 143 | ASSERT(is_valid()); |
| 144 | return code_; |
| 145 | } |
| 146 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 147 | // Return the high bit of the register code as a 0 or 1. Used often |
| 148 | // when constructing the REX prefix byte. |
| 149 | int high_bit() const { |
| 150 | return code_ >> 3; |
| 151 | } |
| 152 | // Return the 3 low bits of the register code. Used when encoding registers |
| 153 | // in modR/M, SIB, and opcode bytes. |
| 154 | int low_bits() const { |
| 155 | return code_ & 0x7; |
| 156 | } |
| 157 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 158 | int code_; |
| 159 | }; |
| 160 | |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 161 | const XMMRegister xmm0 = { 0 }; |
| 162 | const XMMRegister xmm1 = { 1 }; |
| 163 | const XMMRegister xmm2 = { 2 }; |
| 164 | const XMMRegister xmm3 = { 3 }; |
| 165 | const XMMRegister xmm4 = { 4 }; |
| 166 | const XMMRegister xmm5 = { 5 }; |
| 167 | const XMMRegister xmm6 = { 6 }; |
| 168 | const XMMRegister xmm7 = { 7 }; |
| 169 | const XMMRegister xmm8 = { 8 }; |
| 170 | const XMMRegister xmm9 = { 9 }; |
| 171 | const XMMRegister xmm10 = { 10 }; |
| 172 | const XMMRegister xmm11 = { 11 }; |
| 173 | const XMMRegister xmm12 = { 12 }; |
| 174 | const XMMRegister xmm13 = { 13 }; |
| 175 | const XMMRegister xmm14 = { 14 }; |
| 176 | const XMMRegister xmm15 = { 15 }; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 177 | |
| 178 | enum Condition { |
| 179 | // any value < 0 is considered no_condition |
| 180 | no_condition = -1, |
| 181 | |
| 182 | overflow = 0, |
| 183 | no_overflow = 1, |
| 184 | below = 2, |
| 185 | above_equal = 3, |
| 186 | equal = 4, |
| 187 | not_equal = 5, |
| 188 | below_equal = 6, |
| 189 | above = 7, |
| 190 | negative = 8, |
| 191 | positive = 9, |
| 192 | parity_even = 10, |
| 193 | parity_odd = 11, |
| 194 | less = 12, |
| 195 | greater_equal = 13, |
| 196 | less_equal = 14, |
| 197 | greater = 15, |
| 198 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 199 | // Fake conditions that are handled by the |
| 200 | // opcodes using them. |
| 201 | always = 16, |
| 202 | never = 17, |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 203 | // aliases |
| 204 | carry = below, |
| 205 | not_carry = above_equal, |
| 206 | zero = equal, |
| 207 | not_zero = not_equal, |
| 208 | sign = negative, |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 209 | not_sign = positive, |
| 210 | last_condition = greater |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 211 | }; |
| 212 | |
| 213 | |
| 214 | // Returns the equivalent of !cc. |
| 215 | // Negation of the default no_condition (-1) results in a non-default |
| 216 | // no_condition value (-2). As long as tests for no_condition check |
| 217 | // for condition < 0, this will work as expected. |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 218 | inline Condition NegateCondition(Condition cc) { |
| 219 | return static_cast<Condition>(cc ^ 1); |
| 220 | } |
| 221 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 222 | |
| 223 | // Corresponds to transposing the operands of a comparison. |
| 224 | inline Condition ReverseCondition(Condition cc) { |
| 225 | switch (cc) { |
| 226 | case below: |
| 227 | return above; |
| 228 | case above: |
| 229 | return below; |
| 230 | case above_equal: |
| 231 | return below_equal; |
| 232 | case below_equal: |
| 233 | return above_equal; |
| 234 | case less: |
| 235 | return greater; |
| 236 | case greater: |
| 237 | return less; |
| 238 | case greater_equal: |
| 239 | return less_equal; |
| 240 | case less_equal: |
| 241 | return greater_equal; |
| 242 | default: |
| 243 | return cc; |
| 244 | }; |
| 245 | } |
| 246 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 247 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 248 | enum Hint { |
| 249 | no_hint = 0, |
| 250 | not_taken = 0x2e, |
| 251 | taken = 0x3e |
| 252 | }; |
| 253 | |
| 254 | // The result of negating a hint is as if the corresponding condition |
| 255 | // were negated by NegateCondition. That is, no_hint is mapped to |
| 256 | // itself and not_taken and taken are mapped to each other. |
| 257 | inline Hint NegateHint(Hint hint) { |
| 258 | return (hint == no_hint) |
| 259 | ? no_hint |
| 260 | : ((hint == not_taken) ? taken : not_taken); |
| 261 | } |
| 262 | |
| 263 | |
| 264 | // ----------------------------------------------------------------------------- |
| 265 | // Machine instruction Immediates |
| 266 | |
| 267 | class Immediate BASE_EMBEDDED { |
| 268 | public: |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 269 | explicit Immediate(int32_t value) : value_(value) {} |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 270 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 271 | private: |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 272 | int32_t value_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 273 | |
| 274 | friend class Assembler; |
| 275 | }; |
| 276 | |
| 277 | |
| 278 | // ----------------------------------------------------------------------------- |
| 279 | // Machine instruction Operands |
| 280 | |
| 281 | enum ScaleFactor { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 282 | times_1 = 0, |
| 283 | times_2 = 1, |
| 284 | times_4 = 2, |
| 285 | times_8 = 3, |
| 286 | times_int_size = times_4, |
| 287 | times_pointer_size = times_8 |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 288 | }; |
| 289 | |
| 290 | |
| 291 | class Operand BASE_EMBEDDED { |
| 292 | public: |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 293 | // [base + disp/r] |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 294 | Operand(Register base, int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 295 | |
| 296 | // [base + index*scale + disp/r] |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 297 | Operand(Register base, |
| 298 | Register index, |
| 299 | ScaleFactor scale, |
| 300 | int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 301 | |
| 302 | // [index*scale + disp/r] |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 303 | Operand(Register index, |
| 304 | ScaleFactor scale, |
| 305 | int32_t disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 306 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 307 | // Offset from existing memory operand. |
| 308 | // Offset is added to existing displacement as 32-bit signed values and |
| 309 | // this must not overflow. |
| 310 | Operand(const Operand& base, int32_t offset); |
| 311 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 312 | private: |
| 313 | byte rex_; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 314 | byte buf_[6]; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 315 | // The number of bytes in buf_. |
| 316 | unsigned int len_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 317 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 318 | // Set the ModR/M byte without an encoded 'reg' register. The |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 319 | // register is encoded later as part of the emit_operand operation. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 320 | // 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] | 321 | inline void set_modrm(int mod, Register rm); |
| 322 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 323 | // 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] | 324 | inline void set_sib(ScaleFactor scale, Register index, Register base); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 325 | |
| 326 | // Adds operand displacement fields (offsets added to the memory address). |
| 327 | // Needs to be called after set_sib, not before it. |
| 328 | inline void set_disp8(int disp); |
| 329 | inline void set_disp32(int disp); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 330 | |
| 331 | friend class Assembler; |
| 332 | }; |
| 333 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 334 | |
| 335 | // CpuFeatures keeps track of which features are supported by the target CPU. |
| 336 | // Supported features must be enabled by a Scope before use. |
| 337 | // Example: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 338 | // if (CpuFeatures::IsSupported(SSE3)) { |
| 339 | // CpuFeatures::Scope fscope(SSE3); |
| 340 | // // Generate SSE3 floating point code. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 341 | // } else { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 342 | // // Generate standard x87 or SSE2 floating point code. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 343 | // } |
| 344 | class CpuFeatures : public AllStatic { |
| 345 | public: |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 346 | // Detect features of the target CPU. Set safe defaults if the serializer |
| 347 | // is enabled (snapshots must be portable). |
| 348 | static void Probe(); |
| 349 | // Check whether a feature is supported by the target CPU. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 350 | static bool IsSupported(CpuFeature f) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 351 | if (f == SSE2 && !FLAG_enable_sse2) return false; |
| 352 | if (f == SSE3 && !FLAG_enable_sse3) return false; |
| 353 | if (f == CMOV && !FLAG_enable_cmov) return false; |
| 354 | if (f == RDTSC && !FLAG_enable_rdtsc) return false; |
| 355 | if (f == SAHF && !FLAG_enable_sahf) return false; |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 356 | return (supported_ & (V8_UINT64_C(1) << f)) != 0; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 357 | } |
| 358 | // Check whether a feature is currently enabled. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 359 | static bool IsEnabled(CpuFeature f) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 360 | return (enabled_ & (V8_UINT64_C(1) << f)) != 0; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 361 | } |
| 362 | // Enable a specified feature within a scope. |
| 363 | class Scope BASE_EMBEDDED { |
| 364 | #ifdef DEBUG |
| 365 | public: |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 366 | explicit Scope(CpuFeature f) { |
| 367 | uint64_t mask = (V8_UINT64_C(1) << f); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 368 | ASSERT(CpuFeatures::IsSupported(f)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 369 | ASSERT(!Serializer::enabled() || (found_by_runtime_probing_ & mask) == 0); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 370 | old_enabled_ = CpuFeatures::enabled_; |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 371 | CpuFeatures::enabled_ |= mask; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 372 | } |
| 373 | ~Scope() { CpuFeatures::enabled_ = old_enabled_; } |
| 374 | private: |
| 375 | uint64_t old_enabled_; |
| 376 | #else |
| 377 | public: |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 378 | explicit Scope(CpuFeature f) {} |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 379 | #endif |
| 380 | }; |
| 381 | private: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 382 | // Safe defaults include SSE2 and CMOV for X64. It is always available, if |
| 383 | // anyone checks, but they shouldn't need to check. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 384 | static const uint64_t kDefaultCpuFeatures = (1 << SSE2 | 1 << CMOV); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 385 | static uint64_t supported_; |
| 386 | static uint64_t enabled_; |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 387 | static uint64_t found_by_runtime_probing_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 388 | }; |
| 389 | |
| 390 | |
| 391 | class Assembler : public Malloced { |
| 392 | private: |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 393 | // We check before assembling an instruction that there is sufficient |
| 394 | // space to write an instruction and its relocation information. |
| 395 | // 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] | 396 | // the generated instructions. This leaves enough space for the |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 397 | // longest possible x64 instruction, 15 bytes, and the longest possible |
| 398 | // relocation information encoding, RelocInfoWriter::kMaxLength == 16. |
| 399 | // (There is a 15 byte limit on x64 instruction length that rules out some |
| 400 | // otherwise valid instructions.) |
| 401 | // This allows for a single, fast space check per instruction. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 402 | static const int kGap = 32; |
| 403 | |
| 404 | public: |
| 405 | // Create an assembler. Instructions and relocation information are emitted |
| 406 | // into a buffer, with the instructions starting from the beginning and the |
| 407 | // relocation information starting from the end of the buffer. See CodeDesc |
| 408 | // for a detailed comment on the layout (globals.h). |
| 409 | // |
| 410 | // If the provided buffer is NULL, the assembler allocates and grows its own |
| 411 | // buffer, and buffer_size determines the initial buffer size. The buffer is |
| 412 | // owned by the assembler and deallocated upon destruction of the assembler. |
| 413 | // |
| 414 | // If the provided buffer is not NULL, the assembler uses the provided buffer |
| 415 | // for code generation and assumes its size to be buffer_size. If the buffer |
| 416 | // is too small, a fatal error occurs. No deallocation of the buffer is done |
| 417 | // upon destruction of the assembler. |
| 418 | Assembler(void* buffer, int buffer_size); |
| 419 | ~Assembler(); |
| 420 | |
| 421 | // GetCode emits any pending (non-emitted) code and fills the descriptor |
| 422 | // desc. GetCode() is idempotent; it returns the same result if no other |
| 423 | // Assembler functions are invoked in between GetCode() calls. |
| 424 | void GetCode(CodeDesc* desc); |
| 425 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 426 | // Read/Modify the code target in the relative branch/call instruction at pc. |
| 427 | // On the x64 architecture, we use relative jumps with a 32-bit displacement |
| 428 | // to jump to other Code objects in the Code space in the heap. |
| 429 | // Jumps to C functions are done indirectly through a 64-bit register holding |
| 430 | // the absolute address of the target. |
| 431 | // These functions convert between absolute Addresses of Code objects and |
| 432 | // the relative displacements stored in the code. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 433 | static inline Address target_address_at(Address pc); |
| 434 | static inline void set_target_address_at(Address pc, Address target); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 435 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 436 | // 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] | 437 | // This is for calls and branches within generated code. |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 438 | inline static void set_target_at(Address instruction_payload, |
| 439 | Address target) { |
| 440 | set_target_address_at(instruction_payload, target); |
| 441 | } |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 442 | |
| 443 | // This sets the branch destination (which is a load instruction on x64). |
| 444 | // This is for calls and branches to runtime code. |
| 445 | inline static void set_external_target_at(Address instruction_payload, |
| 446 | Address target) { |
| 447 | *reinterpret_cast<Address*>(instruction_payload) = target; |
| 448 | } |
| 449 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 450 | inline Handle<Object> code_target_object_handle_at(Address pc); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 451 | // 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] | 452 | static const int kCallTargetSize = 4; // Use 32-bit displacement. |
| 453 | static const int kExternalTargetSize = 8; // Use 64-bit absolute. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 454 | // 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] | 455 | // and the return address pushed on the stack. |
| 456 | static const int kCallTargetAddressOffset = 4; // Use 32-bit displacement. |
| 457 | // Distance between the start of the JS return sequence and where the |
| 458 | // 32-bit displacement of a near call would be, relative to the pushed |
| 459 | // return address. TODO: Use return sequence length instead. |
| 460 | // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; |
| 461 | static const int kPatchReturnSequenceAddressOffset = 13 - 4; |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 462 | // Distance between start of patched debug break slot and where the |
| 463 | // 32-bit displacement of a near call would be, relative to the pushed |
| 464 | // return address. TODO: Use return sequence length instead. |
| 465 | // Should equal Debug::kX64JSReturnSequenceLength - kCallTargetAddressOffset; |
| 466 | static const int kPatchDebugBreakSlotAddressOffset = 13 - 4; |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 467 | // TODO(X64): Rename this, removing the "Real", after changing the above. |
| 468 | static const int kRealPatchReturnSequenceAddressOffset = 2; |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 469 | |
| 470 | // The x64 JS return sequence is padded with int3 to make it large |
| 471 | // enough to hold a call instruction when the debugger patches it. |
| 472 | static const int kCallInstructionLength = 13; |
| 473 | static const int kJSReturnSequenceLength = 13; |
| 474 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 475 | // The debug break slot must be able to contain a call instruction. |
| 476 | static const int kDebugBreakSlotLength = kCallInstructionLength; |
| 477 | |
| 478 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 479 | // --------------------------------------------------------------------------- |
| 480 | // Code generation |
| 481 | // |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 482 | // Function names correspond one-to-one to x64 instruction mnemonics. |
| 483 | // Unless specified otherwise, instructions operate on 64-bit operands. |
| 484 | // |
| 485 | // If we need versions of an assembly instruction that operate on different |
| 486 | // width arguments, we add a single-letter suffix specifying the width. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 487 | // This is done for the following instructions: mov, cmp, inc, dec, |
| 488 | // add, sub, and test. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 489 | // There are no versions of these instructions without the suffix. |
| 490 | // - Instructions on 8-bit (byte) operands/registers have a trailing 'b'. |
| 491 | // - Instructions on 16-bit (word) operands/registers have a trailing 'w'. |
| 492 | // - Instructions on 32-bit (doubleword) operands/registers use 'l'. |
| 493 | // - Instructions on 64-bit (quadword) operands/registers use 'q'. |
| 494 | // |
| 495 | // Some mnemonics, such as "and", are the same as C++ keywords. |
| 496 | // Naming conflicts with C++ keywords are resolved by adding a trailing '_'. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 497 | |
| 498 | // Insert the smallest number of nop instructions |
| 499 | // possible to align the pc offset to a multiple |
| 500 | // of m. m must be a power of 2. |
| 501 | void Align(int m); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 502 | // Aligns code to something that's optimal for a jump target for the platform. |
| 503 | void CodeTargetAlign(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 504 | |
| 505 | // Stack |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 506 | void pushfq(); |
| 507 | void popfq(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 508 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 509 | void push(Immediate value); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 510 | void push(Register src); |
| 511 | void push(const Operand& src); |
| 512 | void push(Label* label, RelocInfo::Mode relocation_mode); |
| 513 | |
| 514 | void pop(Register dst); |
| 515 | void pop(const Operand& dst); |
| 516 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 517 | void enter(Immediate size); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 518 | void leave(); |
| 519 | |
| 520 | // Moves |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 521 | void movb(Register dst, const Operand& src); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 522 | void movb(Register dst, Immediate imm); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 523 | void movb(const Operand& dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 524 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 525 | // Move the low 16 bits of a 64-bit register value to a 16-bit |
| 526 | // memory location. |
| 527 | void movw(const Operand& dst, Register src); |
| 528 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 529 | void movl(Register dst, Register src); |
| 530 | void movl(Register dst, const Operand& src); |
| 531 | void movl(const Operand& dst, Register src); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 532 | void movl(const Operand& dst, Immediate imm); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 533 | // Load a 32-bit immediate value, zero-extended to 64 bits. |
| 534 | void movl(Register dst, Immediate imm32); |
| 535 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 536 | // Move 64 bit register value to 64-bit memory location. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 537 | void movq(const Operand& dst, Register src); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 538 | // Move 64 bit memory location to 64-bit register value. |
| 539 | void movq(Register dst, const Operand& src); |
| 540 | void movq(Register dst, Register src); |
| 541 | // Sign extends immediate 32-bit value to 64 bits. |
| 542 | void movq(Register dst, Immediate x); |
| 543 | // Move the offset of the label location relative to the current |
| 544 | // position (after the move) to the destination. |
| 545 | void movl(const Operand& dst, Label* src); |
| 546 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 547 | // Move sign extended immediate to memory location. |
| 548 | void movq(const Operand& dst, Immediate value); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 549 | // New x64 instructions to load a 64-bit immediate into a register. |
| 550 | // All 64-bit immediates must have a relocation mode. |
| 551 | void movq(Register dst, void* ptr, RelocInfo::Mode rmode); |
| 552 | void movq(Register dst, int64_t value, RelocInfo::Mode rmode); |
| 553 | void movq(Register dst, const char* s, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 554 | // Moves the address of the external reference into the register. |
| 555 | void movq(Register dst, ExternalReference ext); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 556 | void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode); |
| 557 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 558 | void movsxbq(Register dst, const Operand& src); |
| 559 | void movsxwq(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 560 | void movsxlq(Register dst, Register src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 561 | void movsxlq(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 562 | void movzxbq(Register dst, const Operand& src); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 563 | void movzxbl(Register dst, const Operand& src); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 564 | void movzxwq(Register dst, const Operand& src); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 565 | void movzxwl(Register dst, const Operand& src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 566 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 567 | // Repeated moves. |
| 568 | |
| 569 | void repmovsb(); |
| 570 | void repmovsw(); |
| 571 | void repmovsl(); |
| 572 | void repmovsq(); |
| 573 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 574 | // New x64 instruction to load from an immediate 64-bit pointer into RAX. |
| 575 | void load_rax(void* ptr, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 576 | void load_rax(ExternalReference ext); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 577 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 578 | // Conditional moves. |
| 579 | void cmovq(Condition cc, Register dst, Register src); |
| 580 | void cmovq(Condition cc, Register dst, const Operand& src); |
| 581 | void cmovl(Condition cc, Register dst, Register src); |
| 582 | void cmovl(Condition cc, Register dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 583 | |
| 584 | // Exchange two registers |
| 585 | void xchg(Register dst, Register src); |
| 586 | |
| 587 | // Arithmetics |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 588 | void addl(Register dst, Register src) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 589 | arithmetic_op_32(0x03, dst, src); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 590 | } |
| 591 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 592 | void addl(Register dst, Immediate src) { |
| 593 | immediate_arithmetic_op_32(0x0, dst, src); |
| 594 | } |
| 595 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 596 | void addl(Register dst, const Operand& src) { |
| 597 | arithmetic_op_32(0x03, dst, src); |
| 598 | } |
| 599 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 600 | void addl(const Operand& dst, Immediate src) { |
| 601 | immediate_arithmetic_op_32(0x0, dst, src); |
| 602 | } |
| 603 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 604 | void addq(Register dst, Register src) { |
| 605 | arithmetic_op(0x03, dst, src); |
| 606 | } |
| 607 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 608 | void addq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 609 | arithmetic_op(0x03, dst, src); |
| 610 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 611 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 612 | void addq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 613 | arithmetic_op(0x01, src, dst); |
| 614 | } |
| 615 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 616 | void addq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 617 | immediate_arithmetic_op(0x0, dst, src); |
| 618 | } |
| 619 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 620 | void addq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 621 | immediate_arithmetic_op(0x0, dst, src); |
| 622 | } |
| 623 | |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 624 | void sbbl(Register dst, Register src) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 625 | arithmetic_op_32(0x1b, dst, src); |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 626 | } |
| 627 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 628 | void cmpb(Register dst, Immediate src) { |
| 629 | immediate_arithmetic_op_8(0x7, dst, src); |
| 630 | } |
| 631 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 632 | void cmpb_al(Immediate src); |
| 633 | |
| 634 | void cmpb(Register dst, Register src) { |
| 635 | arithmetic_op(0x3A, dst, src); |
| 636 | } |
| 637 | |
| 638 | void cmpb(Register dst, const Operand& src) { |
| 639 | arithmetic_op(0x3A, dst, src); |
| 640 | } |
| 641 | |
| 642 | void cmpb(const Operand& dst, Register src) { |
| 643 | arithmetic_op(0x38, src, dst); |
| 644 | } |
| 645 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 646 | void cmpb(const Operand& dst, Immediate src) { |
| 647 | immediate_arithmetic_op_8(0x7, dst, src); |
| 648 | } |
| 649 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 650 | void cmpw(const Operand& dst, Immediate src) { |
| 651 | immediate_arithmetic_op_16(0x7, dst, src); |
| 652 | } |
| 653 | |
| 654 | void cmpw(Register dst, Immediate src) { |
| 655 | immediate_arithmetic_op_16(0x7, dst, src); |
| 656 | } |
| 657 | |
| 658 | void cmpw(Register dst, const Operand& src) { |
| 659 | arithmetic_op_16(0x3B, dst, src); |
| 660 | } |
| 661 | |
| 662 | void cmpw(Register dst, Register src) { |
| 663 | arithmetic_op_16(0x3B, dst, src); |
| 664 | } |
| 665 | |
| 666 | void cmpw(const Operand& dst, Register src) { |
| 667 | arithmetic_op_16(0x39, src, dst); |
| 668 | } |
| 669 | |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 670 | void cmpl(Register dst, Register src) { |
| 671 | arithmetic_op_32(0x3B, dst, src); |
| 672 | } |
| 673 | |
| 674 | void cmpl(Register dst, const Operand& src) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 675 | arithmetic_op_32(0x3B, dst, src); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 676 | } |
| 677 | |
| 678 | void cmpl(const Operand& dst, Register src) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 679 | arithmetic_op_32(0x39, src, dst); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | void cmpl(Register dst, Immediate src) { |
| 683 | immediate_arithmetic_op_32(0x7, dst, src); |
| 684 | } |
| 685 | |
| 686 | void cmpl(const Operand& dst, Immediate src) { |
| 687 | immediate_arithmetic_op_32(0x7, dst, src); |
| 688 | } |
| 689 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 690 | void cmpq(Register dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 691 | arithmetic_op(0x3B, dst, src); |
| 692 | } |
| 693 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 694 | void cmpq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 695 | arithmetic_op(0x3B, dst, src); |
| 696 | } |
| 697 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 698 | void cmpq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 699 | arithmetic_op(0x39, src, dst); |
| 700 | } |
| 701 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 702 | void cmpq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 703 | immediate_arithmetic_op(0x7, dst, src); |
| 704 | } |
| 705 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 706 | void cmpq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 707 | immediate_arithmetic_op(0x7, dst, src); |
| 708 | } |
| 709 | |
| 710 | void and_(Register dst, Register src) { |
| 711 | arithmetic_op(0x23, dst, src); |
| 712 | } |
| 713 | |
| 714 | void and_(Register dst, const Operand& src) { |
| 715 | arithmetic_op(0x23, dst, src); |
| 716 | } |
| 717 | |
| 718 | void and_(const Operand& dst, Register src) { |
| 719 | arithmetic_op(0x21, src, dst); |
| 720 | } |
| 721 | |
| 722 | void and_(Register dst, Immediate src) { |
| 723 | immediate_arithmetic_op(0x4, dst, src); |
| 724 | } |
| 725 | |
| 726 | void and_(const Operand& dst, Immediate src) { |
| 727 | immediate_arithmetic_op(0x4, dst, src); |
| 728 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 729 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 730 | void andl(Register dst, Immediate src) { |
| 731 | immediate_arithmetic_op_32(0x4, dst, src); |
| 732 | } |
| 733 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 734 | void andl(Register dst, Register src) { |
| 735 | arithmetic_op_32(0x23, dst, src); |
| 736 | } |
| 737 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 738 | void andb(Register dst, Immediate src) { |
| 739 | immediate_arithmetic_op_8(0x4, dst, src); |
| 740 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 741 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 742 | void decq(Register dst); |
| 743 | void decq(const Operand& dst); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 744 | void decl(Register dst); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 745 | void decl(const Operand& dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 746 | void decb(Register dst); |
| 747 | void decb(const Operand& dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 748 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 749 | // Sign-extends rax into rdx:rax. |
| 750 | void cqo(); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 751 | // Sign-extends eax into edx:eax. |
| 752 | void cdq(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 753 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 754 | // Divide rdx:rax by src. Quotient in rax, remainder in rdx. |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 755 | void idivq(Register src); |
| 756 | // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. |
| 757 | void idivl(Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 758 | |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 759 | // Signed multiply instructions. |
| 760 | void imul(Register src); // rdx:rax = rax * src. |
| 761 | void imul(Register dst, Register src); // dst = dst * src. |
| 762 | void imul(Register dst, const Operand& src); // dst = dst * src. |
| 763 | void imul(Register dst, Register src, Immediate imm); // dst = src * imm. |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 764 | // Signed 32-bit multiply instructions. |
| 765 | void imull(Register dst, Register src); // dst = dst * src. |
| 766 | void imull(Register dst, Register src, Immediate imm); // dst = src * imm. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 767 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 768 | void incq(Register dst); |
| 769 | void incq(const Operand& dst); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 770 | void incl(Register dst); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 771 | void incl(const Operand& dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 772 | |
| 773 | void lea(Register dst, const Operand& src); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 774 | void leal(Register dst, const Operand& src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 775 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 776 | // Multiply rax by src, put the result in rdx:rax. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 777 | void mul(Register src); |
| 778 | |
| 779 | void neg(Register dst); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 780 | void neg(const Operand& dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 781 | void negl(Register dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 782 | |
| 783 | void not_(Register dst); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 784 | void not_(const Operand& dst); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 785 | void notl(Register dst); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 786 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 787 | void or_(Register dst, Register src) { |
| 788 | arithmetic_op(0x0B, dst, src); |
| 789 | } |
| 790 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 791 | void orl(Register dst, Register src) { |
| 792 | arithmetic_op_32(0x0B, dst, src); |
| 793 | } |
| 794 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 795 | void or_(Register dst, const Operand& src) { |
| 796 | arithmetic_op(0x0B, dst, src); |
| 797 | } |
| 798 | |
| 799 | void or_(const Operand& dst, Register src) { |
| 800 | arithmetic_op(0x09, src, dst); |
| 801 | } |
| 802 | |
| 803 | void or_(Register dst, Immediate src) { |
| 804 | immediate_arithmetic_op(0x1, dst, src); |
| 805 | } |
| 806 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 807 | void orl(Register dst, Immediate src) { |
| 808 | immediate_arithmetic_op_32(0x1, dst, src); |
| 809 | } |
| 810 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 811 | void or_(const Operand& dst, Immediate src) { |
| 812 | immediate_arithmetic_op(0x1, dst, src); |
| 813 | } |
| 814 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 815 | void orl(const Operand& dst, Immediate src) { |
| 816 | immediate_arithmetic_op_32(0x1, dst, src); |
| 817 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 818 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 819 | |
| 820 | void rcl(Register dst, Immediate imm8) { |
| 821 | shift(dst, imm8, 0x2); |
| 822 | } |
| 823 | |
| 824 | void rol(Register dst, Immediate imm8) { |
| 825 | shift(dst, imm8, 0x0); |
| 826 | } |
| 827 | |
| 828 | void rcr(Register dst, Immediate imm8) { |
| 829 | shift(dst, imm8, 0x3); |
| 830 | } |
| 831 | |
| 832 | void ror(Register dst, Immediate imm8) { |
| 833 | shift(dst, imm8, 0x1); |
| 834 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 835 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 836 | // Shifts dst:src left by cl bits, affecting only dst. |
| 837 | void shld(Register dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 838 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 839 | // Shifts src:dst right by cl bits, affecting only dst. |
| 840 | void shrd(Register dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 841 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 842 | // Shifts dst right, duplicating sign bit, by shift_amount bits. |
| 843 | // Shifting by 1 is handled efficiently. |
| 844 | void sar(Register dst, Immediate shift_amount) { |
| 845 | shift(dst, shift_amount, 0x7); |
| 846 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 847 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 848 | // Shifts dst right, duplicating sign bit, by shift_amount bits. |
| 849 | // Shifting by 1 is handled efficiently. |
| 850 | void sarl(Register dst, Immediate shift_amount) { |
| 851 | shift_32(dst, shift_amount, 0x7); |
| 852 | } |
| 853 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 854 | // Shifts dst right, duplicating sign bit, by cl % 64 bits. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 855 | void sar_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 856 | shift(dst, 0x7); |
| 857 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 858 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 859 | // Shifts dst right, duplicating sign bit, by cl % 64 bits. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 860 | void sarl_cl(Register dst) { |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 861 | shift_32(dst, 0x7); |
| 862 | } |
| 863 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 864 | void shl(Register dst, Immediate shift_amount) { |
| 865 | shift(dst, shift_amount, 0x4); |
| 866 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 867 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 868 | void shl_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 869 | shift(dst, 0x4); |
| 870 | } |
| 871 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 872 | void shll_cl(Register dst) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 873 | shift_32(dst, 0x4); |
| 874 | } |
| 875 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 876 | void shll(Register dst, Immediate shift_amount) { |
| 877 | shift_32(dst, shift_amount, 0x4); |
| 878 | } |
| 879 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 880 | void shr(Register dst, Immediate shift_amount) { |
| 881 | shift(dst, shift_amount, 0x5); |
| 882 | } |
| 883 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 884 | void shr_cl(Register dst) { |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 885 | shift(dst, 0x5); |
| 886 | } |
| 887 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 888 | void shrl_cl(Register dst) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 889 | shift_32(dst, 0x5); |
| 890 | } |
| 891 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 892 | void shrl(Register dst, Immediate shift_amount) { |
| 893 | shift_32(dst, shift_amount, 0x5); |
| 894 | } |
| 895 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 896 | void store_rax(void* dst, RelocInfo::Mode mode); |
| 897 | void store_rax(ExternalReference ref); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 898 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 899 | void subq(Register dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 900 | arithmetic_op(0x2B, dst, src); |
| 901 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 902 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 903 | void subq(Register dst, const Operand& src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 904 | arithmetic_op(0x2B, dst, src); |
| 905 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 906 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 907 | void subq(const Operand& dst, Register src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 908 | arithmetic_op(0x29, src, dst); |
| 909 | } |
| 910 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 911 | void subq(Register dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 912 | immediate_arithmetic_op(0x5, dst, src); |
| 913 | } |
| 914 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 915 | void subq(const Operand& dst, Immediate src) { |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 916 | immediate_arithmetic_op(0x5, dst, src); |
| 917 | } |
| 918 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 919 | void subl(Register dst, Register src) { |
| 920 | arithmetic_op_32(0x2B, dst, src); |
| 921 | } |
| 922 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 923 | void subl(Register dst, const Operand& src) { |
| 924 | arithmetic_op_32(0x2B, dst, src); |
| 925 | } |
| 926 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 927 | void subl(const Operand& dst, Immediate src) { |
| 928 | immediate_arithmetic_op_32(0x5, dst, src); |
| 929 | } |
| 930 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 931 | void subl(Register dst, Immediate src) { |
| 932 | immediate_arithmetic_op_32(0x5, dst, src); |
| 933 | } |
| 934 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 935 | void subb(Register dst, Immediate src) { |
| 936 | immediate_arithmetic_op_8(0x5, dst, src); |
| 937 | } |
| 938 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 939 | void testb(Register dst, Register src); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 940 | void testb(Register reg, Immediate mask); |
| 941 | void testb(const Operand& op, Immediate mask); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 942 | void testb(const Operand& op, Register reg); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 943 | void testl(Register dst, Register src); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 944 | void testl(Register reg, Immediate mask); |
| 945 | void testl(const Operand& op, Immediate mask); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 946 | void testq(const Operand& op, Register reg); |
| 947 | void testq(Register dst, Register src); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 948 | void testq(Register dst, Immediate mask); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 949 | |
| 950 | void xor_(Register dst, Register src) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 951 | if (dst.code() == src.code()) { |
| 952 | arithmetic_op_32(0x33, dst, src); |
| 953 | } else { |
| 954 | arithmetic_op(0x33, dst, src); |
| 955 | } |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 956 | } |
| 957 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 958 | void xorl(Register dst, Register src) { |
| 959 | arithmetic_op_32(0x33, dst, src); |
| 960 | } |
| 961 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 962 | void xor_(Register dst, const Operand& src) { |
| 963 | arithmetic_op(0x33, dst, src); |
| 964 | } |
| 965 | |
| 966 | void xor_(const Operand& dst, Register src) { |
| 967 | arithmetic_op(0x31, src, dst); |
| 968 | } |
| 969 | |
| 970 | void xor_(Register dst, Immediate src) { |
| 971 | immediate_arithmetic_op(0x6, dst, src); |
| 972 | } |
| 973 | |
| 974 | void xor_(const Operand& dst, Immediate src) { |
| 975 | immediate_arithmetic_op(0x6, dst, src); |
| 976 | } |
| 977 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 978 | // Bit operations. |
| 979 | void bt(const Operand& dst, Register src); |
| 980 | void bts(const Operand& dst, Register src); |
| 981 | |
| 982 | // Miscellaneous |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 983 | void clc(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 984 | void cpuid(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 985 | void hlt(); |
| 986 | void int3(); |
| 987 | void nop(); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 988 | void nop(int n); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 989 | void rdtsc(); |
| 990 | void ret(int imm16); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 991 | void setcc(Condition cc, Register reg); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 992 | |
| 993 | // Label operations & relative jumps (PPUM Appendix D) |
| 994 | // |
| 995 | // Takes a branch opcode (cc) and a label (L) and generates |
| 996 | // either a backward branch or a forward branch and links it |
| 997 | // to the label fixup chain. Usage: |
| 998 | // |
| 999 | // Label L; // unbound label |
| 1000 | // j(cc, &L); // forward branch to unbound label |
| 1001 | // bind(&L); // bind label to the current pc |
| 1002 | // j(cc, &L); // backward branch to bound label |
| 1003 | // bind(&L); // illegal: a label may be bound only once |
| 1004 | // |
| 1005 | // Note: The same Label can be used for forward and backward branches |
| 1006 | // but it may be bound only once. |
| 1007 | |
| 1008 | void bind(Label* L); // binds an unbound label L to the current code position |
| 1009 | |
| 1010 | // Calls |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1011 | // Call near relative 32-bit displacement, relative to next instruction. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1012 | void call(Label* L); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1013 | void call(Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1014 | |
| 1015 | // Call near absolute indirect, address in register |
| 1016 | void call(Register adr); |
| 1017 | |
| 1018 | // Call near indirect |
| 1019 | void call(const Operand& operand); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1020 | |
| 1021 | // Jumps |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1022 | // Jump short or near relative. |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1023 | // Use a 32-bit signed displacement. |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1024 | void jmp(Label* L); // unconditional jump to L |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1025 | void jmp(Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1026 | |
| 1027 | // Jump near absolute indirect (r64) |
| 1028 | void jmp(Register adr); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1029 | |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1030 | // Jump near absolute indirect (m64) |
| 1031 | void jmp(const Operand& src); |
| 1032 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1033 | // Conditional jumps |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1034 | void j(Condition cc, Label* L); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1035 | void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1036 | |
| 1037 | // Floating-point operations |
| 1038 | void fld(int i); |
| 1039 | |
| 1040 | void fld1(); |
| 1041 | void fldz(); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1042 | void fldpi(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1043 | |
| 1044 | void fld_s(const Operand& adr); |
| 1045 | void fld_d(const Operand& adr); |
| 1046 | |
| 1047 | void fstp_s(const Operand& adr); |
| 1048 | void fstp_d(const Operand& adr); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1049 | void fstp(int index); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1050 | |
| 1051 | void fild_s(const Operand& adr); |
| 1052 | void fild_d(const Operand& adr); |
| 1053 | |
| 1054 | void fist_s(const Operand& adr); |
| 1055 | |
| 1056 | void fistp_s(const Operand& adr); |
| 1057 | void fistp_d(const Operand& adr); |
| 1058 | |
| 1059 | void fisttp_s(const Operand& adr); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1060 | void fisttp_d(const Operand& adr); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1061 | |
| 1062 | void fabs(); |
| 1063 | void fchs(); |
| 1064 | |
| 1065 | void fadd(int i); |
| 1066 | void fsub(int i); |
| 1067 | void fmul(int i); |
| 1068 | void fdiv(int i); |
| 1069 | |
| 1070 | void fisub_s(const Operand& adr); |
| 1071 | |
| 1072 | void faddp(int i = 1); |
| 1073 | void fsubp(int i = 1); |
| 1074 | void fsubrp(int i = 1); |
| 1075 | void fmulp(int i = 1); |
| 1076 | void fdivp(int i = 1); |
| 1077 | void fprem(); |
| 1078 | void fprem1(); |
| 1079 | |
| 1080 | void fxch(int i = 1); |
| 1081 | void fincstp(); |
| 1082 | void ffree(int i = 0); |
| 1083 | |
| 1084 | void ftst(); |
| 1085 | void fucomp(int i); |
| 1086 | void fucompp(); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1087 | void fucomi(int i); |
| 1088 | void fucomip(); |
| 1089 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1090 | void fcompp(); |
| 1091 | void fnstsw_ax(); |
| 1092 | void fwait(); |
| 1093 | void fnclex(); |
| 1094 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1095 | void fsin(); |
| 1096 | void fcos(); |
| 1097 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1098 | void frndint(); |
| 1099 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1100 | void sahf(); |
| 1101 | |
| 1102 | // SSE2 instructions |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1103 | void movd(XMMRegister dst, Register src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1104 | void movd(Register dst, XMMRegister src); |
| 1105 | void movq(XMMRegister dst, Register src); |
| 1106 | void movq(Register dst, XMMRegister src); |
| 1107 | void extractps(Register dst, XMMRegister src, byte imm8); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1108 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1109 | void movsd(const Operand& dst, XMMRegister src); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1110 | void movsd(XMMRegister dst, XMMRegister src); |
| 1111 | void movsd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1112 | |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame^] | 1113 | void movss(XMMRegister dst, const Operand& src); |
| 1114 | void movss(const Operand& dst, XMMRegister src); |
| 1115 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1116 | void cvttss2si(Register dst, const Operand& src); |
| 1117 | void cvttsd2si(Register dst, const Operand& src); |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 1118 | void cvttsd2siq(Register dst, XMMRegister src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1119 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1120 | void cvtlsi2sd(XMMRegister dst, const Operand& src); |
| 1121 | void cvtlsi2sd(XMMRegister dst, Register src); |
| 1122 | void cvtqsi2sd(XMMRegister dst, const Operand& src); |
| 1123 | void cvtqsi2sd(XMMRegister dst, Register src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1124 | |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame^] | 1125 | void cvtlsi2ss(XMMRegister dst, Register src); |
| 1126 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1127 | void cvtss2sd(XMMRegister dst, XMMRegister src); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame^] | 1128 | void cvtss2sd(XMMRegister dst, const Operand& src); |
| 1129 | void cvtsd2ss(XMMRegister dst, XMMRegister src); |
| 1130 | |
| 1131 | void cvtsd2si(Register dst, XMMRegister src); |
| 1132 | void cvtsd2siq(Register dst, XMMRegister src); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1133 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1134 | void addsd(XMMRegister dst, XMMRegister src); |
| 1135 | void subsd(XMMRegister dst, XMMRegister src); |
| 1136 | void mulsd(XMMRegister dst, XMMRegister src); |
| 1137 | void divsd(XMMRegister dst, XMMRegister src); |
| 1138 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1139 | void xorpd(XMMRegister dst, XMMRegister src); |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 1140 | void sqrtsd(XMMRegister dst, XMMRegister src); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1141 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1142 | void ucomisd(XMMRegister dst, XMMRegister src); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame^] | 1143 | void ucomisd(XMMRegister dst, const Operand& src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1144 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 1145 | // 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] | 1146 | void emit_sse_operand(XMMRegister dst, XMMRegister src); |
| 1147 | void emit_sse_operand(XMMRegister reg, const Operand& adr); |
| 1148 | void emit_sse_operand(XMMRegister dst, Register src); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1149 | void emit_sse_operand(Register dst, XMMRegister src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1150 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1151 | // Use either movsd or movlpd. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1152 | // void movdbl(XMMRegister dst, const Operand& src); |
| 1153 | // void movdbl(const Operand& dst, XMMRegister src); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1154 | |
| 1155 | // Debugging |
| 1156 | void Print(); |
| 1157 | |
| 1158 | // Check the code size generated from label to here. |
| 1159 | int SizeOfCodeGeneratedSince(Label* l) { return pc_offset() - l->pos(); } |
| 1160 | |
| 1161 | // Mark address of the ExitJSFrame code. |
| 1162 | void RecordJSReturn(); |
| 1163 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1164 | // Mark address of a debug break slot. |
| 1165 | void RecordDebugBreakSlot(); |
| 1166 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1167 | // Record a comment relocation entry that can be used by a disassembler. |
| 1168 | // Use --debug_code to enable. |
| 1169 | void RecordComment(const char* msg); |
| 1170 | |
| 1171 | void RecordPosition(int pos); |
| 1172 | void RecordStatementPosition(int pos); |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1173 | bool WriteRecordedPositions(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1174 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1175 | int pc_offset() const { return static_cast<int>(pc_ - buffer_); } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1176 | int current_statement_position() const { return current_statement_position_; } |
| 1177 | int current_position() const { return current_position_; } |
| 1178 | |
| 1179 | // Check if there is less than kGap bytes available in the buffer. |
| 1180 | // If this is the case, we need to grow the buffer before emitting |
| 1181 | // an instruction or relocation information. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1182 | inline bool buffer_overflow() const { |
| 1183 | return pc_ >= reloc_info_writer.pos() - kGap; |
| 1184 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1185 | |
| 1186 | // Get the number of bytes available in the buffer. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1187 | inline int available_space() const { |
| 1188 | return static_cast<int>(reloc_info_writer.pos() - pc_); |
| 1189 | } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1190 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 1191 | static bool IsNop(Address addr) { return *addr == 0x90; } |
| 1192 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1193 | // Avoid overflows for displacements etc. |
| 1194 | static const int kMaximalBufferSize = 512*MB; |
| 1195 | static const int kMinimalBufferSize = 4*KB; |
| 1196 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1197 | private: |
| 1198 | byte* addr_at(int pos) { return buffer_ + pos; } |
| 1199 | byte byte_at(int pos) { return buffer_[pos]; } |
| 1200 | uint32_t long_at(int pos) { |
| 1201 | return *reinterpret_cast<uint32_t*>(addr_at(pos)); |
| 1202 | } |
| 1203 | void long_at_put(int pos, uint32_t x) { |
| 1204 | *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; |
| 1205 | } |
| 1206 | |
| 1207 | // code emission |
| 1208 | void GrowBuffer(); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1209 | |
| 1210 | void emit(byte x) { *pc_++ = x; } |
| 1211 | inline void emitl(uint32_t x); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1212 | inline void emitq(uint64_t x, RelocInfo::Mode rmode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1213 | inline void emitw(uint16_t x); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1214 | inline void emit_code_target(Handle<Code> target, RelocInfo::Mode rmode); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1215 | void emit(Immediate x) { emitl(x.value_); } |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1216 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1217 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1218 | // the top bit of both register codes. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1219 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
| 1220 | // REX.W is set. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1221 | inline void emit_rex_64(XMMRegister reg, Register rm_reg); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1222 | inline void emit_rex_64(Register reg, XMMRegister rm_reg); |
| 1223 | inline void emit_rex_64(Register reg, Register rm_reg); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1224 | |
| 1225 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1226 | // the top bit of the destination, index, and base register codes. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1227 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1228 | // register is used for REX.B, and the high bit of op's index register |
| 1229 | // is used for REX.X. REX.W is set. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1230 | inline void emit_rex_64(Register reg, const Operand& op); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1231 | inline void emit_rex_64(XMMRegister reg, const Operand& op); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1232 | |
| 1233 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1234 | // the top bit of the register code. |
| 1235 | // The high bit of register is used for REX.B. |
| 1236 | // REX.W is set and REX.R and REX.X are clear. |
| 1237 | inline void emit_rex_64(Register rm_reg); |
| 1238 | |
| 1239 | // Emits a REX prefix that encodes a 64-bit operand size and |
| 1240 | // the top bit of the index and base register codes. |
| 1241 | // The high bit of op's base register is used for REX.B, and the high |
| 1242 | // bit of op's index register is used for REX.X. |
| 1243 | // REX.W is set and REX.R clear. |
| 1244 | inline void emit_rex_64(const Operand& op); |
| 1245 | |
| 1246 | // Emit a REX prefix that only sets REX.W to choose a 64-bit operand size. |
| 1247 | void emit_rex_64() { emit(0x48); } |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1248 | |
| 1249 | // 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] | 1250 | // REX.W is clear. |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1251 | inline void emit_rex_32(Register reg, Register rm_reg); |
| 1252 | |
| 1253 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1254 | // register is used for REX.B, and the high bit of op's index register |
| 1255 | // is used for REX.X. REX.W is cleared. |
| 1256 | inline void emit_rex_32(Register reg, const Operand& op); |
| 1257 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1258 | // High bit of rm_reg goes to REX.B. |
| 1259 | // REX.W, REX.R and REX.X are clear. |
| 1260 | inline void emit_rex_32(Register rm_reg); |
| 1261 | |
| 1262 | // High bit of base goes to REX.B and high bit of index to REX.X. |
| 1263 | // REX.W and REX.R are clear. |
| 1264 | inline void emit_rex_32(const Operand& op); |
| 1265 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1266 | // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B. |
| 1267 | // REX.W is cleared. If no REX bits are set, no byte is emitted. |
| 1268 | inline void emit_optional_rex_32(Register reg, Register rm_reg); |
| 1269 | |
| 1270 | // The high bit of reg is used for REX.R, the high bit of op's base |
| 1271 | // register is used for REX.B, and the high bit of op's index register |
| 1272 | // is used for REX.X. REX.W is cleared. If no REX bits are set, nothing |
| 1273 | // is emitted. |
| 1274 | inline void emit_optional_rex_32(Register reg, const Operand& op); |
| 1275 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1276 | // As for emit_optional_rex_32(Register, Register), except that |
| 1277 | // the registers are XMM registers. |
| 1278 | inline void emit_optional_rex_32(XMMRegister reg, XMMRegister base); |
| 1279 | |
| 1280 | // As for emit_optional_rex_32(Register, Register), except that |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1281 | // one of the registers is an XMM registers. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1282 | inline void emit_optional_rex_32(XMMRegister reg, Register base); |
| 1283 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1284 | // As for emit_optional_rex_32(Register, Register), except that |
| 1285 | // one of the registers is an XMM registers. |
| 1286 | inline void emit_optional_rex_32(Register reg, XMMRegister base); |
| 1287 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1288 | // As for emit_optional_rex_32(Register, const Operand&), except that |
| 1289 | // the register is an XMM register. |
| 1290 | inline void emit_optional_rex_32(XMMRegister reg, const Operand& op); |
| 1291 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1292 | // Optionally do as emit_rex_32(Register) if the register number has |
| 1293 | // the high bit set. |
| 1294 | inline void emit_optional_rex_32(Register rm_reg); |
| 1295 | |
| 1296 | // Optionally do as emit_rex_32(const Operand&) if the operand register |
| 1297 | // numbers have a high bit set. |
| 1298 | inline void emit_optional_rex_32(const Operand& op); |
| 1299 | |
| 1300 | |
| 1301 | // Emit the ModR/M byte, and optionally the SIB byte and |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1302 | // 1- or 4-byte offset for a memory operand. Also encodes |
| 1303 | // the second operand of the operation, a register or operation |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1304 | // subcode, into the reg field of the ModR/M byte. |
| 1305 | void emit_operand(Register reg, const Operand& adr) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1306 | emit_operand(reg.low_bits(), adr); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1307 | } |
| 1308 | |
| 1309 | // Emit the ModR/M byte, and optionally the SIB byte and |
| 1310 | // 1- or 4-byte offset for a memory operand. Also used to encode |
| 1311 | // a three-bit opcode extension into the ModR/M byte. |
| 1312 | void emit_operand(int rm, const Operand& adr); |
| 1313 | |
| 1314 | // Emit a ModR/M byte with registers coded in the reg and rm_reg fields. |
| 1315 | void emit_modrm(Register reg, Register rm_reg) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1316 | emit(0xC0 | reg.low_bits() << 3 | rm_reg.low_bits()); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1317 | } |
| 1318 | |
| 1319 | // Emit a ModR/M byte with an operation subcode in the reg field and |
| 1320 | // a register in the rm_reg field. |
| 1321 | void emit_modrm(int code, Register rm_reg) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1322 | ASSERT(is_uint3(code)); |
| 1323 | emit(0xC0 | code << 3 | rm_reg.low_bits()); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1324 | } |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1325 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1326 | // Emit the code-object-relative offset of the label's position |
| 1327 | inline void emit_code_relative_offset(Label* label); |
| 1328 | |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1329 | // Emit machine code for one of the operations ADD, ADC, SUB, SBC, |
| 1330 | // AND, OR, XOR, or CMP. The encodings of these operations are all |
| 1331 | // 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] | 1332 | // ModR/M byte. |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1333 | void arithmetic_op_16(byte opcode, Register reg, Register rm_reg); |
| 1334 | void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg); |
| 1335 | void arithmetic_op_32(byte opcode, Register reg, Register rm_reg); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1336 | 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] | 1337 | void arithmetic_op(byte opcode, Register reg, Register rm_reg); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1338 | void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg); |
sgjesse@chromium.org | 755c5b1 | 2009-05-29 11:04:38 +0000 | [diff] [blame] | 1339 | void immediate_arithmetic_op(byte subcode, Register dst, Immediate src); |
| 1340 | void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1341 | // Operate on a byte in memory or register. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1342 | void immediate_arithmetic_op_8(byte subcode, |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1343 | Register dst, |
| 1344 | Immediate src); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1345 | void immediate_arithmetic_op_8(byte subcode, |
| 1346 | const Operand& dst, |
| 1347 | Immediate src); |
| 1348 | // Operate on a word in memory or register. |
| 1349 | void immediate_arithmetic_op_16(byte subcode, |
| 1350 | Register dst, |
| 1351 | Immediate src); |
| 1352 | void immediate_arithmetic_op_16(byte subcode, |
| 1353 | const Operand& dst, |
| 1354 | Immediate src); |
| 1355 | // Operate on a 32-bit word in memory or register. |
| 1356 | void immediate_arithmetic_op_32(byte subcode, |
| 1357 | Register dst, |
| 1358 | Immediate src); |
| 1359 | void immediate_arithmetic_op_32(byte subcode, |
| 1360 | const Operand& dst, |
| 1361 | Immediate src); |
| 1362 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1363 | // Emit machine code for a shift operation. |
| 1364 | void shift(Register dst, Immediate shift_amount, int subcode); |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 1365 | void shift_32(Register dst, Immediate shift_amount, int subcode); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1366 | // Shift dst by cl % 64 bits. |
| 1367 | void shift(Register dst, int subcode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1368 | void shift_32(Register dst, int subcode); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1369 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1370 | void emit_farith(int b1, int b2, int i); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1371 | |
| 1372 | // labels |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1373 | // void print(Label* L); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1374 | void bind_to(Label* L, int pos); |
| 1375 | void link_to(Label* L, Label* appendix); |
| 1376 | |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1377 | // record reloc info for current pc_ |
| 1378 | void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); |
| 1379 | |
| 1380 | friend class CodePatcher; |
| 1381 | friend class EnsureSpace; |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1382 | friend class RegExpMacroAssemblerX64; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1383 | |
| 1384 | // Code buffer: |
| 1385 | // The buffer into which code and relocation info are generated. |
| 1386 | byte* buffer_; |
| 1387 | int buffer_size_; |
| 1388 | // True if the assembler owns the buffer, false if buffer is external. |
| 1389 | bool own_buffer_; |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1390 | // A previously allocated buffer of kMinimalBufferSize bytes, or NULL. |
| 1391 | static byte* spare_buffer_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1392 | |
| 1393 | // code generation |
| 1394 | byte* pc_; // the program counter; moves forward |
| 1395 | RelocInfoWriter reloc_info_writer; |
| 1396 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1397 | List< Handle<Code> > code_targets_; |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1398 | // push-pop elimination |
| 1399 | byte* last_pc_; |
| 1400 | |
| 1401 | // source position information |
| 1402 | int current_statement_position_; |
| 1403 | int current_position_; |
| 1404 | int written_statement_position_; |
| 1405 | int written_position_; |
| 1406 | }; |
| 1407 | |
| 1408 | |
| 1409 | // Helper class that ensures that there is enough space for generating |
| 1410 | // instructions and relocation information. The constructor makes |
| 1411 | // sure that there is enough space and (in debug mode) the destructor |
| 1412 | // checks that we did not generate too much. |
| 1413 | class EnsureSpace BASE_EMBEDDED { |
| 1414 | public: |
| 1415 | explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1416 | if (assembler_->buffer_overflow()) assembler_->GrowBuffer(); |
ager@chromium.org | 9085a01 | 2009-05-11 19:22:57 +0000 | [diff] [blame] | 1417 | #ifdef DEBUG |
| 1418 | space_before_ = assembler_->available_space(); |
| 1419 | #endif |
| 1420 | } |
| 1421 | |
| 1422 | #ifdef DEBUG |
| 1423 | ~EnsureSpace() { |
| 1424 | int bytes_generated = space_before_ - assembler_->available_space(); |
| 1425 | ASSERT(bytes_generated < assembler_->kGap); |
| 1426 | } |
| 1427 | #endif |
| 1428 | |
| 1429 | private: |
| 1430 | Assembler* assembler_; |
| 1431 | #ifdef DEBUG |
| 1432 | int space_before_; |
| 1433 | #endif |
| 1434 | }; |
| 1435 | |
| 1436 | } } // namespace v8::internal |
| 1437 | |
| 1438 | #endif // V8_X64_ASSEMBLER_X64_H_ |