Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
| 5 | #include <assert.h> |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 6 | #include <stdarg.h> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include <stdio.h> |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 8 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/v8.h" |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 10 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | #if V8_TARGET_ARCH_IA32 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 12 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 13 | #include "src/disasm.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 14 | |
| 15 | namespace disasm { |
| 16 | |
| 17 | enum OperandOrder { |
| 18 | UNSET_OP_ORDER = 0, |
| 19 | REG_OPER_OP_ORDER, |
| 20 | OPER_REG_OP_ORDER |
| 21 | }; |
| 22 | |
| 23 | |
| 24 | //------------------------------------------------------------------ |
| 25 | // Tables |
| 26 | //------------------------------------------------------------------ |
| 27 | struct ByteMnemonic { |
| 28 | int b; // -1 terminates, otherwise must be in range (0..255) |
| 29 | const char* mnem; |
| 30 | OperandOrder op_order_; |
| 31 | }; |
| 32 | |
| 33 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 34 | static const ByteMnemonic two_operands_instr[] = { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 35 | {0x01, "add", OPER_REG_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 36 | {0x03, "add", REG_OPER_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 37 | {0x09, "or", OPER_REG_OP_ORDER}, |
| 38 | {0x0B, "or", REG_OPER_OP_ORDER}, |
| 39 | {0x1B, "sbb", REG_OPER_OP_ORDER}, |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 40 | {0x21, "and", OPER_REG_OP_ORDER}, |
| 41 | {0x23, "and", REG_OPER_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 42 | {0x29, "sub", OPER_REG_OP_ORDER}, |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 43 | {0x2A, "subb", REG_OPER_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | {0x2B, "sub", REG_OPER_OP_ORDER}, |
Leon Clarke | eab96aa | 2010-01-27 16:31:12 +0000 | [diff] [blame] | 45 | {0x31, "xor", OPER_REG_OP_ORDER}, |
| 46 | {0x33, "xor", REG_OPER_OP_ORDER}, |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 47 | {0x38, "cmpb", OPER_REG_OP_ORDER}, |
| 48 | {0x3A, "cmpb", REG_OPER_OP_ORDER}, |
| 49 | {0x3B, "cmp", REG_OPER_OP_ORDER}, |
| 50 | {0x84, "test_b", REG_OPER_OP_ORDER}, |
| 51 | {0x85, "test", REG_OPER_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 52 | {0x87, "xchg", REG_OPER_OP_ORDER}, |
| 53 | {0x8A, "mov_b", REG_OPER_OP_ORDER}, |
| 54 | {0x8B, "mov", REG_OPER_OP_ORDER}, |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 55 | {0x8D, "lea", REG_OPER_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 56 | {-1, "", UNSET_OP_ORDER} |
| 57 | }; |
| 58 | |
| 59 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 60 | static const ByteMnemonic zero_operands_instr[] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 61 | {0xC3, "ret", UNSET_OP_ORDER}, |
| 62 | {0xC9, "leave", UNSET_OP_ORDER}, |
| 63 | {0x90, "nop", UNSET_OP_ORDER}, |
| 64 | {0xF4, "hlt", UNSET_OP_ORDER}, |
| 65 | {0xCC, "int3", UNSET_OP_ORDER}, |
| 66 | {0x60, "pushad", UNSET_OP_ORDER}, |
| 67 | {0x61, "popad", UNSET_OP_ORDER}, |
| 68 | {0x9C, "pushfd", UNSET_OP_ORDER}, |
| 69 | {0x9D, "popfd", UNSET_OP_ORDER}, |
| 70 | {0x9E, "sahf", UNSET_OP_ORDER}, |
| 71 | {0x99, "cdq", UNSET_OP_ORDER}, |
| 72 | {0x9B, "fwait", UNSET_OP_ORDER}, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 73 | {0xFC, "cld", UNSET_OP_ORDER}, |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 74 | {0xAB, "stos", UNSET_OP_ORDER}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 75 | {-1, "", UNSET_OP_ORDER} |
| 76 | }; |
| 77 | |
| 78 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 79 | static const ByteMnemonic call_jump_instr[] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 80 | {0xE8, "call", UNSET_OP_ORDER}, |
| 81 | {0xE9, "jmp", UNSET_OP_ORDER}, |
| 82 | {-1, "", UNSET_OP_ORDER} |
| 83 | }; |
| 84 | |
| 85 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 86 | static const ByteMnemonic short_immediate_instr[] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 87 | {0x05, "add", UNSET_OP_ORDER}, |
| 88 | {0x0D, "or", UNSET_OP_ORDER}, |
| 89 | {0x15, "adc", UNSET_OP_ORDER}, |
| 90 | {0x25, "and", UNSET_OP_ORDER}, |
| 91 | {0x2D, "sub", UNSET_OP_ORDER}, |
| 92 | {0x35, "xor", UNSET_OP_ORDER}, |
| 93 | {0x3D, "cmp", UNSET_OP_ORDER}, |
| 94 | {-1, "", UNSET_OP_ORDER} |
| 95 | }; |
| 96 | |
| 97 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 98 | // Generally we don't want to generate these because they are subject to partial |
| 99 | // register stalls. They are included for completeness and because the cmp |
| 100 | // variant is used by the RecordWrite stub. Because it does not update the |
| 101 | // register it is not subject to partial register stalls. |
| 102 | static ByteMnemonic byte_immediate_instr[] = { |
| 103 | {0x0c, "or", UNSET_OP_ORDER}, |
| 104 | {0x24, "and", UNSET_OP_ORDER}, |
| 105 | {0x34, "xor", UNSET_OP_ORDER}, |
| 106 | {0x3c, "cmp", UNSET_OP_ORDER}, |
| 107 | {-1, "", UNSET_OP_ORDER} |
| 108 | }; |
| 109 | |
| 110 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 111 | static const char* const jump_conditional_mnem[] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 112 | /*0*/ "jo", "jno", "jc", "jnc", |
| 113 | /*4*/ "jz", "jnz", "jna", "ja", |
| 114 | /*8*/ "js", "jns", "jpe", "jpo", |
| 115 | /*12*/ "jl", "jnl", "jng", "jg" |
| 116 | }; |
| 117 | |
| 118 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 119 | static const char* const set_conditional_mnem[] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 120 | /*0*/ "seto", "setno", "setc", "setnc", |
| 121 | /*4*/ "setz", "setnz", "setna", "seta", |
| 122 | /*8*/ "sets", "setns", "setpe", "setpo", |
| 123 | /*12*/ "setl", "setnl", "setng", "setg" |
| 124 | }; |
| 125 | |
| 126 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 127 | static const char* const conditional_move_mnem[] = { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 128 | /*0*/ "cmovo", "cmovno", "cmovc", "cmovnc", |
| 129 | /*4*/ "cmovz", "cmovnz", "cmovna", "cmova", |
| 130 | /*8*/ "cmovs", "cmovns", "cmovpe", "cmovpo", |
| 131 | /*12*/ "cmovl", "cmovnl", "cmovng", "cmovg" |
| 132 | }; |
| 133 | |
| 134 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 135 | enum InstructionType { |
| 136 | NO_INSTR, |
| 137 | ZERO_OPERANDS_INSTR, |
| 138 | TWO_OPERANDS_INSTR, |
| 139 | JUMP_CONDITIONAL_SHORT_INSTR, |
| 140 | REGISTER_INSTR, |
| 141 | MOVE_REG_INSTR, |
| 142 | CALL_JUMP_INSTR, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 143 | SHORT_IMMEDIATE_INSTR, |
| 144 | BYTE_IMMEDIATE_INSTR |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 145 | }; |
| 146 | |
| 147 | |
| 148 | struct InstructionDesc { |
| 149 | const char* mnem; |
| 150 | InstructionType type; |
| 151 | OperandOrder op_order_; |
| 152 | }; |
| 153 | |
| 154 | |
| 155 | class InstructionTable { |
| 156 | public: |
| 157 | InstructionTable(); |
| 158 | const InstructionDesc& Get(byte x) const { return instructions_[x]; } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 159 | static InstructionTable* get_instance() { |
| 160 | static InstructionTable table; |
| 161 | return &table; |
| 162 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 163 | |
| 164 | private: |
| 165 | InstructionDesc instructions_[256]; |
| 166 | void Clear(); |
| 167 | void Init(); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 168 | void CopyTable(const ByteMnemonic bm[], InstructionType type); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 169 | void SetTableRange(InstructionType type, |
| 170 | byte start, |
| 171 | byte end, |
| 172 | const char* mnem); |
| 173 | void AddJumpConditionalShort(); |
| 174 | }; |
| 175 | |
| 176 | |
| 177 | InstructionTable::InstructionTable() { |
| 178 | Clear(); |
| 179 | Init(); |
| 180 | } |
| 181 | |
| 182 | |
| 183 | void InstructionTable::Clear() { |
| 184 | for (int i = 0; i < 256; i++) { |
| 185 | instructions_[i].mnem = ""; |
| 186 | instructions_[i].type = NO_INSTR; |
| 187 | instructions_[i].op_order_ = UNSET_OP_ORDER; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | |
| 192 | void InstructionTable::Init() { |
| 193 | CopyTable(two_operands_instr, TWO_OPERANDS_INSTR); |
| 194 | CopyTable(zero_operands_instr, ZERO_OPERANDS_INSTR); |
| 195 | CopyTable(call_jump_instr, CALL_JUMP_INSTR); |
| 196 | CopyTable(short_immediate_instr, SHORT_IMMEDIATE_INSTR); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 197 | CopyTable(byte_immediate_instr, BYTE_IMMEDIATE_INSTR); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 198 | AddJumpConditionalShort(); |
| 199 | SetTableRange(REGISTER_INSTR, 0x40, 0x47, "inc"); |
| 200 | SetTableRange(REGISTER_INSTR, 0x48, 0x4F, "dec"); |
| 201 | SetTableRange(REGISTER_INSTR, 0x50, 0x57, "push"); |
| 202 | SetTableRange(REGISTER_INSTR, 0x58, 0x5F, "pop"); |
| 203 | SetTableRange(REGISTER_INSTR, 0x91, 0x97, "xchg eax,"); // 0x90 is nop. |
| 204 | SetTableRange(MOVE_REG_INSTR, 0xB8, 0xBF, "mov"); |
| 205 | } |
| 206 | |
| 207 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 208 | void InstructionTable::CopyTable(const ByteMnemonic bm[], |
| 209 | InstructionType type) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 210 | for (int i = 0; bm[i].b >= 0; i++) { |
| 211 | InstructionDesc* id = &instructions_[bm[i].b]; |
| 212 | id->mnem = bm[i].mnem; |
| 213 | id->op_order_ = bm[i].op_order_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 214 | DCHECK_EQ(NO_INSTR, id->type); // Information not already entered. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 215 | id->type = type; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | |
| 220 | void InstructionTable::SetTableRange(InstructionType type, |
| 221 | byte start, |
| 222 | byte end, |
| 223 | const char* mnem) { |
| 224 | for (byte b = start; b <= end; b++) { |
| 225 | InstructionDesc* id = &instructions_[b]; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 226 | DCHECK_EQ(NO_INSTR, id->type); // Information not already entered. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 227 | id->mnem = mnem; |
| 228 | id->type = type; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | |
| 233 | void InstructionTable::AddJumpConditionalShort() { |
| 234 | for (byte b = 0x70; b <= 0x7F; b++) { |
| 235 | InstructionDesc* id = &instructions_[b]; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 236 | DCHECK_EQ(NO_INSTR, id->type); // Information not already entered. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 237 | id->mnem = jump_conditional_mnem[b & 0x0F]; |
| 238 | id->type = JUMP_CONDITIONAL_SHORT_INSTR; |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 243 | // The IA32 disassembler implementation. |
| 244 | class DisassemblerIA32 { |
| 245 | public: |
| 246 | DisassemblerIA32(const NameConverter& converter, |
| 247 | bool abort_on_unimplemented = true) |
| 248 | : converter_(converter), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 249 | vex_byte0_(0), |
| 250 | vex_byte1_(0), |
| 251 | vex_byte2_(0), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 252 | instruction_table_(InstructionTable::get_instance()), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 253 | tmp_buffer_pos_(0), |
| 254 | abort_on_unimplemented_(abort_on_unimplemented) { |
| 255 | tmp_buffer_[0] = '\0'; |
| 256 | } |
| 257 | |
| 258 | virtual ~DisassemblerIA32() {} |
| 259 | |
| 260 | // Writes one disassembled instruction into 'buffer' (0-terminated). |
| 261 | // Returns the length of the disassembled machine instruction in bytes. |
| 262 | int InstructionDecode(v8::internal::Vector<char> buffer, byte* instruction); |
| 263 | |
| 264 | private: |
| 265 | const NameConverter& converter_; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 266 | byte vex_byte0_; // 0xc4 or 0xc5 |
| 267 | byte vex_byte1_; |
| 268 | byte vex_byte2_; // only for 3 bytes vex prefix |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 269 | InstructionTable* instruction_table_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 270 | v8::internal::EmbeddedVector<char, 128> tmp_buffer_; |
| 271 | unsigned int tmp_buffer_pos_; |
| 272 | bool abort_on_unimplemented_; |
| 273 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 274 | enum { |
| 275 | eax = 0, |
| 276 | ecx = 1, |
| 277 | edx = 2, |
| 278 | ebx = 3, |
| 279 | esp = 4, |
| 280 | ebp = 5, |
| 281 | esi = 6, |
| 282 | edi = 7 |
| 283 | }; |
| 284 | |
| 285 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 286 | enum ShiftOpcodeExtension { |
| 287 | kROL = 0, |
| 288 | kROR = 1, |
| 289 | kRCL = 2, |
| 290 | kRCR = 3, |
| 291 | kSHL = 4, |
| 292 | KSHR = 5, |
| 293 | kSAR = 7 |
| 294 | }; |
| 295 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 296 | bool vex_128() { |
| 297 | DCHECK(vex_byte0_ == 0xc4 || vex_byte0_ == 0xc5); |
| 298 | byte checked = vex_byte0_ == 0xc4 ? vex_byte2_ : vex_byte1_; |
| 299 | return (checked & 4) != 1; |
| 300 | } |
| 301 | |
| 302 | bool vex_66() { |
| 303 | DCHECK(vex_byte0_ == 0xc4 || vex_byte0_ == 0xc5); |
| 304 | byte checked = vex_byte0_ == 0xc4 ? vex_byte2_ : vex_byte1_; |
| 305 | return (checked & 3) == 1; |
| 306 | } |
| 307 | |
| 308 | bool vex_f3() { |
| 309 | DCHECK(vex_byte0_ == 0xc4 || vex_byte0_ == 0xc5); |
| 310 | byte checked = vex_byte0_ == 0xc4 ? vex_byte2_ : vex_byte1_; |
| 311 | return (checked & 3) == 2; |
| 312 | } |
| 313 | |
| 314 | bool vex_f2() { |
| 315 | DCHECK(vex_byte0_ == 0xc4 || vex_byte0_ == 0xc5); |
| 316 | byte checked = vex_byte0_ == 0xc4 ? vex_byte2_ : vex_byte1_; |
| 317 | return (checked & 3) == 3; |
| 318 | } |
| 319 | |
| 320 | bool vex_w() { |
| 321 | if (vex_byte0_ == 0xc5) return false; |
| 322 | return (vex_byte2_ & 0x80) != 0; |
| 323 | } |
| 324 | |
| 325 | bool vex_0f() { |
| 326 | if (vex_byte0_ == 0xc5) return true; |
| 327 | return (vex_byte1_ & 3) == 1; |
| 328 | } |
| 329 | |
| 330 | bool vex_0f38() { |
| 331 | if (vex_byte0_ == 0xc5) return false; |
| 332 | return (vex_byte1_ & 3) == 2; |
| 333 | } |
| 334 | |
| 335 | bool vex_0f3a() { |
| 336 | if (vex_byte0_ == 0xc5) return false; |
| 337 | return (vex_byte1_ & 3) == 3; |
| 338 | } |
| 339 | |
| 340 | int vex_vreg() { |
| 341 | DCHECK(vex_byte0_ == 0xc4 || vex_byte0_ == 0xc5); |
| 342 | byte checked = vex_byte0_ == 0xc4 ? vex_byte2_ : vex_byte1_; |
| 343 | return ~(checked >> 3) & 0xf; |
| 344 | } |
| 345 | |
| 346 | char float_size_code() { return "sd"[vex_w()]; } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 347 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 348 | const char* NameOfCPURegister(int reg) const { |
| 349 | return converter_.NameOfCPURegister(reg); |
| 350 | } |
| 351 | |
| 352 | |
| 353 | const char* NameOfByteCPURegister(int reg) const { |
| 354 | return converter_.NameOfByteCPURegister(reg); |
| 355 | } |
| 356 | |
| 357 | |
| 358 | const char* NameOfXMMRegister(int reg) const { |
| 359 | return converter_.NameOfXMMRegister(reg); |
| 360 | } |
| 361 | |
| 362 | |
| 363 | const char* NameOfAddress(byte* addr) const { |
| 364 | return converter_.NameOfAddress(addr); |
| 365 | } |
| 366 | |
| 367 | |
| 368 | // Disassembler helper functions. |
| 369 | static void get_modrm(byte data, int* mod, int* regop, int* rm) { |
| 370 | *mod = (data >> 6) & 3; |
| 371 | *regop = (data & 0x38) >> 3; |
| 372 | *rm = data & 7; |
| 373 | } |
| 374 | |
| 375 | |
| 376 | static void get_sib(byte data, int* scale, int* index, int* base) { |
| 377 | *scale = (data >> 6) & 3; |
| 378 | *index = (data >> 3) & 7; |
| 379 | *base = data & 7; |
| 380 | } |
| 381 | |
| 382 | typedef const char* (DisassemblerIA32::*RegisterNameMapping)(int reg) const; |
| 383 | |
| 384 | int PrintRightOperandHelper(byte* modrmp, RegisterNameMapping register_name); |
| 385 | int PrintRightOperand(byte* modrmp); |
| 386 | int PrintRightByteOperand(byte* modrmp); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 387 | int PrintRightXMMOperand(byte* modrmp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 388 | int PrintOperands(const char* mnem, OperandOrder op_order, byte* data); |
| 389 | int PrintImmediateOp(byte* data); |
| 390 | int F7Instruction(byte* data); |
| 391 | int D1D3C1Instruction(byte* data); |
| 392 | int JumpShort(byte* data); |
| 393 | int JumpConditional(byte* data, const char* comment); |
| 394 | int JumpConditionalShort(byte* data, const char* comment); |
| 395 | int SetCC(byte* data); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 396 | int CMov(byte* data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 397 | int FPUInstruction(byte* data); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 398 | int MemoryFPUInstruction(int escape_opcode, int regop, byte* modrm_start); |
| 399 | int RegisterFPUInstruction(int escape_opcode, byte modrm_byte); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 400 | int AVXInstruction(byte* data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 401 | void AppendToBuffer(const char* format, ...); |
| 402 | |
| 403 | |
| 404 | void UnimplementedInstruction() { |
| 405 | if (abort_on_unimplemented_) { |
| 406 | UNIMPLEMENTED(); |
| 407 | } else { |
| 408 | AppendToBuffer("'Unimplemented Instruction'"); |
| 409 | } |
| 410 | } |
| 411 | }; |
| 412 | |
| 413 | |
| 414 | void DisassemblerIA32::AppendToBuffer(const char* format, ...) { |
| 415 | v8::internal::Vector<char> buf = tmp_buffer_ + tmp_buffer_pos_; |
| 416 | va_list args; |
| 417 | va_start(args, format); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 418 | int result = v8::internal::VSNPrintF(buf, format, args); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 419 | va_end(args); |
| 420 | tmp_buffer_pos_ += result; |
| 421 | } |
| 422 | |
| 423 | int DisassemblerIA32::PrintRightOperandHelper( |
| 424 | byte* modrmp, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 425 | RegisterNameMapping direct_register_name) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 426 | int mod, regop, rm; |
| 427 | get_modrm(*modrmp, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 428 | RegisterNameMapping register_name = (mod == 3) ? direct_register_name : |
| 429 | &DisassemblerIA32::NameOfCPURegister; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 430 | switch (mod) { |
| 431 | case 0: |
| 432 | if (rm == ebp) { |
| 433 | int32_t disp = *reinterpret_cast<int32_t*>(modrmp+1); |
| 434 | AppendToBuffer("[0x%x]", disp); |
| 435 | return 5; |
| 436 | } else if (rm == esp) { |
| 437 | byte sib = *(modrmp + 1); |
| 438 | int scale, index, base; |
| 439 | get_sib(sib, &scale, &index, &base); |
| 440 | if (index == esp && base == esp && scale == 0 /*times_1*/) { |
| 441 | AppendToBuffer("[%s]", (this->*register_name)(rm)); |
| 442 | return 2; |
| 443 | } else if (base == ebp) { |
| 444 | int32_t disp = *reinterpret_cast<int32_t*>(modrmp + 2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 445 | AppendToBuffer("[%s*%d%s0x%x]", |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 446 | (this->*register_name)(index), |
| 447 | 1 << scale, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 448 | disp < 0 ? "-" : "+", |
| 449 | disp < 0 ? -disp : disp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 450 | return 6; |
| 451 | } else if (index != esp && base != ebp) { |
| 452 | // [base+index*scale] |
| 453 | AppendToBuffer("[%s+%s*%d]", |
| 454 | (this->*register_name)(base), |
| 455 | (this->*register_name)(index), |
| 456 | 1 << scale); |
| 457 | return 2; |
| 458 | } else { |
| 459 | UnimplementedInstruction(); |
| 460 | return 1; |
| 461 | } |
| 462 | } else { |
| 463 | AppendToBuffer("[%s]", (this->*register_name)(rm)); |
| 464 | return 1; |
| 465 | } |
| 466 | break; |
| 467 | case 1: // fall through |
| 468 | case 2: |
| 469 | if (rm == esp) { |
| 470 | byte sib = *(modrmp + 1); |
| 471 | int scale, index, base; |
| 472 | get_sib(sib, &scale, &index, &base); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 473 | int disp = mod == 2 ? *reinterpret_cast<int32_t*>(modrmp + 2) |
| 474 | : *reinterpret_cast<int8_t*>(modrmp + 2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 475 | if (index == base && index == rm /*esp*/ && scale == 0 /*times_1*/) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 476 | AppendToBuffer("[%s%s0x%x]", |
| 477 | (this->*register_name)(rm), |
| 478 | disp < 0 ? "-" : "+", |
| 479 | disp < 0 ? -disp : disp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 480 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 481 | AppendToBuffer("[%s+%s*%d%s0x%x]", |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 482 | (this->*register_name)(base), |
| 483 | (this->*register_name)(index), |
| 484 | 1 << scale, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 485 | disp < 0 ? "-" : "+", |
| 486 | disp < 0 ? -disp : disp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 487 | } |
| 488 | return mod == 2 ? 6 : 3; |
| 489 | } else { |
| 490 | // No sib. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 491 | int disp = mod == 2 ? *reinterpret_cast<int32_t*>(modrmp + 1) |
| 492 | : *reinterpret_cast<int8_t*>(modrmp + 1); |
| 493 | AppendToBuffer("[%s%s0x%x]", |
| 494 | (this->*register_name)(rm), |
| 495 | disp < 0 ? "-" : "+", |
| 496 | disp < 0 ? -disp : disp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 497 | return mod == 2 ? 5 : 2; |
| 498 | } |
| 499 | break; |
| 500 | case 3: |
| 501 | AppendToBuffer("%s", (this->*register_name)(rm)); |
| 502 | return 1; |
| 503 | default: |
| 504 | UnimplementedInstruction(); |
| 505 | return 1; |
| 506 | } |
| 507 | UNREACHABLE(); |
| 508 | } |
| 509 | |
| 510 | |
| 511 | int DisassemblerIA32::PrintRightOperand(byte* modrmp) { |
| 512 | return PrintRightOperandHelper(modrmp, &DisassemblerIA32::NameOfCPURegister); |
| 513 | } |
| 514 | |
| 515 | |
| 516 | int DisassemblerIA32::PrintRightByteOperand(byte* modrmp) { |
| 517 | return PrintRightOperandHelper(modrmp, |
| 518 | &DisassemblerIA32::NameOfByteCPURegister); |
| 519 | } |
| 520 | |
| 521 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 522 | int DisassemblerIA32::PrintRightXMMOperand(byte* modrmp) { |
| 523 | return PrintRightOperandHelper(modrmp, |
| 524 | &DisassemblerIA32::NameOfXMMRegister); |
| 525 | } |
| 526 | |
| 527 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 528 | // Returns number of bytes used including the current *data. |
| 529 | // Writes instruction's mnemonic, left and right operands to 'tmp_buffer_'. |
| 530 | int DisassemblerIA32::PrintOperands(const char* mnem, |
| 531 | OperandOrder op_order, |
| 532 | byte* data) { |
| 533 | byte modrm = *data; |
| 534 | int mod, regop, rm; |
| 535 | get_modrm(modrm, &mod, ®op, &rm); |
| 536 | int advance = 0; |
| 537 | switch (op_order) { |
| 538 | case REG_OPER_OP_ORDER: { |
| 539 | AppendToBuffer("%s %s,", mnem, NameOfCPURegister(regop)); |
| 540 | advance = PrintRightOperand(data); |
| 541 | break; |
| 542 | } |
| 543 | case OPER_REG_OP_ORDER: { |
| 544 | AppendToBuffer("%s ", mnem); |
| 545 | advance = PrintRightOperand(data); |
| 546 | AppendToBuffer(",%s", NameOfCPURegister(regop)); |
| 547 | break; |
| 548 | } |
| 549 | default: |
| 550 | UNREACHABLE(); |
| 551 | break; |
| 552 | } |
| 553 | return advance; |
| 554 | } |
| 555 | |
| 556 | |
| 557 | // Returns number of bytes used by machine instruction, including *data byte. |
| 558 | // Writes immediate instructions to 'tmp_buffer_'. |
| 559 | int DisassemblerIA32::PrintImmediateOp(byte* data) { |
| 560 | bool sign_extension_bit = (*data & 0x02) != 0; |
| 561 | byte modrm = *(data+1); |
| 562 | int mod, regop, rm; |
| 563 | get_modrm(modrm, &mod, ®op, &rm); |
| 564 | const char* mnem = "Imm???"; |
| 565 | switch (regop) { |
| 566 | case 0: mnem = "add"; break; |
| 567 | case 1: mnem = "or"; break; |
| 568 | case 2: mnem = "adc"; break; |
| 569 | case 4: mnem = "and"; break; |
| 570 | case 5: mnem = "sub"; break; |
| 571 | case 6: mnem = "xor"; break; |
| 572 | case 7: mnem = "cmp"; break; |
| 573 | default: UnimplementedInstruction(); |
| 574 | } |
| 575 | AppendToBuffer("%s ", mnem); |
| 576 | int count = PrintRightOperand(data+1); |
| 577 | if (sign_extension_bit) { |
| 578 | AppendToBuffer(",0x%x", *(data + 1 + count)); |
| 579 | return 1 + count + 1 /*int8*/; |
| 580 | } else { |
| 581 | AppendToBuffer(",0x%x", *reinterpret_cast<int32_t*>(data + 1 + count)); |
| 582 | return 1 + count + 4 /*int32_t*/; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | |
| 587 | // Returns number of bytes used, including *data. |
| 588 | int DisassemblerIA32::F7Instruction(byte* data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 589 | DCHECK_EQ(0xF7, *data); |
| 590 | byte modrm = *++data; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 591 | int mod, regop, rm; |
| 592 | get_modrm(modrm, &mod, ®op, &rm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 593 | const char* mnem = NULL; |
| 594 | switch (regop) { |
| 595 | case 0: |
| 596 | mnem = "test"; |
| 597 | break; |
| 598 | case 2: |
| 599 | mnem = "not"; |
| 600 | break; |
| 601 | case 3: |
| 602 | mnem = "neg"; |
| 603 | break; |
| 604 | case 4: |
| 605 | mnem = "mul"; |
| 606 | break; |
| 607 | case 5: |
| 608 | mnem = "imul"; |
| 609 | break; |
| 610 | case 6: |
| 611 | mnem = "div"; |
| 612 | break; |
| 613 | case 7: |
| 614 | mnem = "idiv"; |
| 615 | break; |
| 616 | default: |
| 617 | UnimplementedInstruction(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 618 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 619 | AppendToBuffer("%s ", mnem); |
| 620 | int count = PrintRightOperand(data); |
| 621 | if (regop == 0) { |
| 622 | AppendToBuffer(",0x%x", *reinterpret_cast<int32_t*>(data + count)); |
| 623 | count += 4; |
| 624 | } |
| 625 | return 1 + count; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 626 | } |
| 627 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 628 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 629 | int DisassemblerIA32::D1D3C1Instruction(byte* data) { |
| 630 | byte op = *data; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 631 | DCHECK(op == 0xD1 || op == 0xD3 || op == 0xC1); |
| 632 | byte modrm = *++data; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 633 | int mod, regop, rm; |
| 634 | get_modrm(modrm, &mod, ®op, &rm); |
| 635 | int imm8 = -1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 636 | const char* mnem = NULL; |
| 637 | switch (regop) { |
| 638 | case kROL: |
| 639 | mnem = "rol"; |
| 640 | break; |
| 641 | case kROR: |
| 642 | mnem = "ror"; |
| 643 | break; |
| 644 | case kRCL: |
| 645 | mnem = "rcl"; |
| 646 | break; |
| 647 | case kRCR: |
| 648 | mnem = "rcr"; |
| 649 | break; |
| 650 | case kSHL: |
| 651 | mnem = "shl"; |
| 652 | break; |
| 653 | case KSHR: |
| 654 | mnem = "shr"; |
| 655 | break; |
| 656 | case kSAR: |
| 657 | mnem = "sar"; |
| 658 | break; |
| 659 | default: |
| 660 | UnimplementedInstruction(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 661 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 662 | AppendToBuffer("%s ", mnem); |
| 663 | int count = PrintRightOperand(data); |
| 664 | if (op == 0xD1) { |
| 665 | imm8 = 1; |
| 666 | } else if (op == 0xC1) { |
| 667 | imm8 = *(data + 1); |
| 668 | count++; |
| 669 | } else if (op == 0xD3) { |
| 670 | // Shift/rotate by cl. |
| 671 | } |
| 672 | if (imm8 >= 0) { |
| 673 | AppendToBuffer(",%d", imm8); |
| 674 | } else { |
| 675 | AppendToBuffer(",cl"); |
| 676 | } |
| 677 | return 1 + count; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | |
| 681 | // Returns number of bytes used, including *data. |
| 682 | int DisassemblerIA32::JumpShort(byte* data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 683 | DCHECK_EQ(0xEB, *data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 684 | byte b = *(data+1); |
| 685 | byte* dest = data + static_cast<int8_t>(b) + 2; |
| 686 | AppendToBuffer("jmp %s", NameOfAddress(dest)); |
| 687 | return 2; |
| 688 | } |
| 689 | |
| 690 | |
| 691 | // Returns number of bytes used, including *data. |
| 692 | int DisassemblerIA32::JumpConditional(byte* data, const char* comment) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 693 | DCHECK_EQ(0x0F, *data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 694 | byte cond = *(data+1) & 0x0F; |
| 695 | byte* dest = data + *reinterpret_cast<int32_t*>(data+2) + 6; |
| 696 | const char* mnem = jump_conditional_mnem[cond]; |
| 697 | AppendToBuffer("%s %s", mnem, NameOfAddress(dest)); |
| 698 | if (comment != NULL) { |
| 699 | AppendToBuffer(", %s", comment); |
| 700 | } |
| 701 | return 6; // includes 0x0F |
| 702 | } |
| 703 | |
| 704 | |
| 705 | // Returns number of bytes used, including *data. |
| 706 | int DisassemblerIA32::JumpConditionalShort(byte* data, const char* comment) { |
| 707 | byte cond = *data & 0x0F; |
| 708 | byte b = *(data+1); |
| 709 | byte* dest = data + static_cast<int8_t>(b) + 2; |
| 710 | const char* mnem = jump_conditional_mnem[cond]; |
| 711 | AppendToBuffer("%s %s", mnem, NameOfAddress(dest)); |
| 712 | if (comment != NULL) { |
| 713 | AppendToBuffer(", %s", comment); |
| 714 | } |
| 715 | return 2; |
| 716 | } |
| 717 | |
| 718 | |
| 719 | // Returns number of bytes used, including *data. |
| 720 | int DisassemblerIA32::SetCC(byte* data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 721 | DCHECK_EQ(0x0F, *data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 722 | byte cond = *(data+1) & 0x0F; |
| 723 | const char* mnem = set_conditional_mnem[cond]; |
| 724 | AppendToBuffer("%s ", mnem); |
| 725 | PrintRightByteOperand(data+2); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 726 | return 3; // Includes 0x0F. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | |
| 730 | // Returns number of bytes used, including *data. |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 731 | int DisassemblerIA32::CMov(byte* data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 732 | DCHECK_EQ(0x0F, *data); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 733 | byte cond = *(data + 1) & 0x0F; |
| 734 | const char* mnem = conditional_move_mnem[cond]; |
| 735 | int op_size = PrintOperands(mnem, REG_OPER_OP_ORDER, data + 2); |
| 736 | return 2 + op_size; // includes 0x0F |
| 737 | } |
| 738 | |
| 739 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 740 | int DisassemblerIA32::AVXInstruction(byte* data) { |
| 741 | byte opcode = *data; |
| 742 | byte* current = data + 1; |
| 743 | if (vex_66() && vex_0f38()) { |
| 744 | int mod, regop, rm, vvvv = vex_vreg(); |
| 745 | get_modrm(*current, &mod, ®op, &rm); |
| 746 | switch (opcode) { |
| 747 | case 0x99: |
| 748 | AppendToBuffer("vfmadd132s%c %s,%s,", float_size_code(), |
| 749 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 750 | current += PrintRightXMMOperand(current); |
| 751 | break; |
| 752 | case 0xa9: |
| 753 | AppendToBuffer("vfmadd213s%c %s,%s,", float_size_code(), |
| 754 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 755 | current += PrintRightXMMOperand(current); |
| 756 | break; |
| 757 | case 0xb9: |
| 758 | AppendToBuffer("vfmadd231s%c %s,%s,", float_size_code(), |
| 759 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 760 | current += PrintRightXMMOperand(current); |
| 761 | break; |
| 762 | case 0x9b: |
| 763 | AppendToBuffer("vfmsub132s%c %s,%s,", float_size_code(), |
| 764 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 765 | current += PrintRightXMMOperand(current); |
| 766 | break; |
| 767 | case 0xab: |
| 768 | AppendToBuffer("vfmsub213s%c %s,%s,", float_size_code(), |
| 769 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 770 | current += PrintRightXMMOperand(current); |
| 771 | break; |
| 772 | case 0xbb: |
| 773 | AppendToBuffer("vfmsub231s%c %s,%s,", float_size_code(), |
| 774 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 775 | current += PrintRightXMMOperand(current); |
| 776 | break; |
| 777 | case 0x9d: |
| 778 | AppendToBuffer("vfnmadd132s%c %s,%s,", float_size_code(), |
| 779 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 780 | current += PrintRightXMMOperand(current); |
| 781 | break; |
| 782 | case 0xad: |
| 783 | AppendToBuffer("vfnmadd213s%c %s,%s,", float_size_code(), |
| 784 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 785 | current += PrintRightXMMOperand(current); |
| 786 | break; |
| 787 | case 0xbd: |
| 788 | AppendToBuffer("vfnmadd231s%c %s,%s,", float_size_code(), |
| 789 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 790 | current += PrintRightXMMOperand(current); |
| 791 | break; |
| 792 | case 0x9f: |
| 793 | AppendToBuffer("vfnmsub132s%c %s,%s,", float_size_code(), |
| 794 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 795 | current += PrintRightXMMOperand(current); |
| 796 | break; |
| 797 | case 0xaf: |
| 798 | AppendToBuffer("vfnmsub213s%c %s,%s,", float_size_code(), |
| 799 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 800 | current += PrintRightXMMOperand(current); |
| 801 | break; |
| 802 | case 0xbf: |
| 803 | AppendToBuffer("vfnmsub231s%c %s,%s,", float_size_code(), |
| 804 | NameOfXMMRegister(regop), NameOfXMMRegister(vvvv)); |
| 805 | current += PrintRightXMMOperand(current); |
| 806 | break; |
| 807 | default: |
| 808 | UnimplementedInstruction(); |
| 809 | } |
| 810 | } else if (vex_f2() && vex_0f()) { |
| 811 | int mod, regop, rm, vvvv = vex_vreg(); |
| 812 | get_modrm(*current, &mod, ®op, &rm); |
| 813 | switch (opcode) { |
| 814 | case 0x58: |
| 815 | AppendToBuffer("vaddsd %s,%s,", NameOfXMMRegister(regop), |
| 816 | NameOfXMMRegister(vvvv)); |
| 817 | current += PrintRightXMMOperand(current); |
| 818 | break; |
| 819 | case 0x59: |
| 820 | AppendToBuffer("vmulsd %s,%s,", NameOfXMMRegister(regop), |
| 821 | NameOfXMMRegister(vvvv)); |
| 822 | current += PrintRightXMMOperand(current); |
| 823 | break; |
| 824 | case 0x5c: |
| 825 | AppendToBuffer("vsubsd %s,%s,", NameOfXMMRegister(regop), |
| 826 | NameOfXMMRegister(vvvv)); |
| 827 | current += PrintRightXMMOperand(current); |
| 828 | break; |
| 829 | case 0x5e: |
| 830 | AppendToBuffer("vdivsd %s,%s,", NameOfXMMRegister(regop), |
| 831 | NameOfXMMRegister(vvvv)); |
| 832 | current += PrintRightXMMOperand(current); |
| 833 | break; |
| 834 | default: |
| 835 | UnimplementedInstruction(); |
| 836 | } |
| 837 | } else { |
| 838 | UnimplementedInstruction(); |
| 839 | } |
| 840 | |
| 841 | return static_cast<int>(current - data); |
| 842 | } |
| 843 | |
| 844 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 845 | // Returns number of bytes used, including *data. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 846 | int DisassemblerIA32::FPUInstruction(byte* data) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 847 | byte escape_opcode = *data; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 848 | DCHECK_EQ(0xD8, escape_opcode & 0xF8); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 849 | byte modrm_byte = *(data+1); |
| 850 | |
| 851 | if (modrm_byte >= 0xC0) { |
| 852 | return RegisterFPUInstruction(escape_opcode, modrm_byte); |
| 853 | } else { |
| 854 | return MemoryFPUInstruction(escape_opcode, modrm_byte, data+1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 855 | } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | int DisassemblerIA32::MemoryFPUInstruction(int escape_opcode, |
| 859 | int modrm_byte, |
| 860 | byte* modrm_start) { |
| 861 | const char* mnem = "?"; |
| 862 | int regop = (modrm_byte >> 3) & 0x7; // reg/op field of modrm byte. |
| 863 | switch (escape_opcode) { |
| 864 | case 0xD9: switch (regop) { |
| 865 | case 0: mnem = "fld_s"; break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 866 | case 2: mnem = "fst_s"; break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 867 | case 3: mnem = "fstp_s"; break; |
| 868 | case 7: mnem = "fstcw"; break; |
| 869 | default: UnimplementedInstruction(); |
| 870 | } |
| 871 | break; |
| 872 | |
| 873 | case 0xDB: switch (regop) { |
| 874 | case 0: mnem = "fild_s"; break; |
| 875 | case 1: mnem = "fisttp_s"; break; |
| 876 | case 2: mnem = "fist_s"; break; |
| 877 | case 3: mnem = "fistp_s"; break; |
| 878 | default: UnimplementedInstruction(); |
| 879 | } |
| 880 | break; |
| 881 | |
| 882 | case 0xDD: switch (regop) { |
| 883 | case 0: mnem = "fld_d"; break; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 884 | case 1: mnem = "fisttp_d"; break; |
| 885 | case 2: mnem = "fst_d"; break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 886 | case 3: mnem = "fstp_d"; break; |
| 887 | default: UnimplementedInstruction(); |
| 888 | } |
| 889 | break; |
| 890 | |
| 891 | case 0xDF: switch (regop) { |
| 892 | case 5: mnem = "fild_d"; break; |
| 893 | case 7: mnem = "fistp_d"; break; |
| 894 | default: UnimplementedInstruction(); |
| 895 | } |
| 896 | break; |
| 897 | |
| 898 | default: UnimplementedInstruction(); |
| 899 | } |
| 900 | AppendToBuffer("%s ", mnem); |
| 901 | int count = PrintRightOperand(modrm_start); |
| 902 | return count + 1; |
| 903 | } |
| 904 | |
| 905 | int DisassemblerIA32::RegisterFPUInstruction(int escape_opcode, |
| 906 | byte modrm_byte) { |
| 907 | bool has_register = false; // Is the FPU register encoded in modrm_byte? |
| 908 | const char* mnem = "?"; |
| 909 | |
| 910 | switch (escape_opcode) { |
| 911 | case 0xD8: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 912 | has_register = true; |
| 913 | switch (modrm_byte & 0xF8) { |
| 914 | case 0xC0: mnem = "fadd_i"; break; |
| 915 | case 0xE0: mnem = "fsub_i"; break; |
| 916 | case 0xC8: mnem = "fmul_i"; break; |
| 917 | case 0xF0: mnem = "fdiv_i"; break; |
| 918 | default: UnimplementedInstruction(); |
| 919 | } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 920 | break; |
| 921 | |
| 922 | case 0xD9: |
| 923 | switch (modrm_byte & 0xF8) { |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 924 | case 0xC0: |
| 925 | mnem = "fld"; |
| 926 | has_register = true; |
| 927 | break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 928 | case 0xC8: |
| 929 | mnem = "fxch"; |
| 930 | has_register = true; |
| 931 | break; |
| 932 | default: |
| 933 | switch (modrm_byte) { |
| 934 | case 0xE0: mnem = "fchs"; break; |
| 935 | case 0xE1: mnem = "fabs"; break; |
| 936 | case 0xE4: mnem = "ftst"; break; |
| 937 | case 0xE8: mnem = "fld1"; break; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 938 | case 0xEB: mnem = "fldpi"; break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 939 | case 0xED: mnem = "fldln2"; break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 940 | case 0xEE: mnem = "fldz"; break; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 941 | case 0xF0: mnem = "f2xm1"; break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 942 | case 0xF1: mnem = "fyl2x"; break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 943 | case 0xF4: mnem = "fxtract"; break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 944 | case 0xF5: mnem = "fprem1"; break; |
| 945 | case 0xF7: mnem = "fincstp"; break; |
| 946 | case 0xF8: mnem = "fprem"; break; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 947 | case 0xFC: mnem = "frndint"; break; |
| 948 | case 0xFD: mnem = "fscale"; break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 949 | case 0xFE: mnem = "fsin"; break; |
| 950 | case 0xFF: mnem = "fcos"; break; |
| 951 | default: UnimplementedInstruction(); |
| 952 | } |
| 953 | } |
| 954 | break; |
| 955 | |
| 956 | case 0xDA: |
| 957 | if (modrm_byte == 0xE9) { |
| 958 | mnem = "fucompp"; |
| 959 | } else { |
| 960 | UnimplementedInstruction(); |
| 961 | } |
| 962 | break; |
| 963 | |
| 964 | case 0xDB: |
| 965 | if ((modrm_byte & 0xF8) == 0xE8) { |
| 966 | mnem = "fucomi"; |
| 967 | has_register = true; |
| 968 | } else if (modrm_byte == 0xE2) { |
| 969 | mnem = "fclex"; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 970 | } else if (modrm_byte == 0xE3) { |
| 971 | mnem = "fninit"; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 972 | } else { |
| 973 | UnimplementedInstruction(); |
| 974 | } |
| 975 | break; |
| 976 | |
| 977 | case 0xDC: |
| 978 | has_register = true; |
| 979 | switch (modrm_byte & 0xF8) { |
| 980 | case 0xC0: mnem = "fadd"; break; |
| 981 | case 0xE8: mnem = "fsub"; break; |
| 982 | case 0xC8: mnem = "fmul"; break; |
| 983 | case 0xF8: mnem = "fdiv"; break; |
| 984 | default: UnimplementedInstruction(); |
| 985 | } |
| 986 | break; |
| 987 | |
| 988 | case 0xDD: |
| 989 | has_register = true; |
| 990 | switch (modrm_byte & 0xF8) { |
| 991 | case 0xC0: mnem = "ffree"; break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 992 | case 0xD0: mnem = "fst"; break; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 993 | case 0xD8: mnem = "fstp"; break; |
| 994 | default: UnimplementedInstruction(); |
| 995 | } |
| 996 | break; |
| 997 | |
| 998 | case 0xDE: |
| 999 | if (modrm_byte == 0xD9) { |
| 1000 | mnem = "fcompp"; |
| 1001 | } else { |
| 1002 | has_register = true; |
| 1003 | switch (modrm_byte & 0xF8) { |
| 1004 | case 0xC0: mnem = "faddp"; break; |
| 1005 | case 0xE8: mnem = "fsubp"; break; |
| 1006 | case 0xC8: mnem = "fmulp"; break; |
| 1007 | case 0xF8: mnem = "fdivp"; break; |
| 1008 | default: UnimplementedInstruction(); |
| 1009 | } |
| 1010 | } |
| 1011 | break; |
| 1012 | |
| 1013 | case 0xDF: |
| 1014 | if (modrm_byte == 0xE0) { |
| 1015 | mnem = "fnstsw_ax"; |
| 1016 | } else if ((modrm_byte & 0xF8) == 0xE8) { |
| 1017 | mnem = "fucomip"; |
| 1018 | has_register = true; |
| 1019 | } |
| 1020 | break; |
| 1021 | |
| 1022 | default: UnimplementedInstruction(); |
| 1023 | } |
| 1024 | |
| 1025 | if (has_register) { |
| 1026 | AppendToBuffer("%s st%d", mnem, modrm_byte & 0x7); |
| 1027 | } else { |
| 1028 | AppendToBuffer("%s", mnem); |
| 1029 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1030 | return 2; |
| 1031 | } |
| 1032 | |
| 1033 | |
| 1034 | // Mnemonics for instructions 0xF0 byte. |
| 1035 | // Returns NULL if the instruction is not handled here. |
| 1036 | static const char* F0Mnem(byte f0byte) { |
| 1037 | switch (f0byte) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1038 | case 0x18: return "prefetch"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1039 | case 0xA2: return "cpuid"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1040 | case 0xBE: return "movsx_b"; |
| 1041 | case 0xBF: return "movsx_w"; |
| 1042 | case 0xB6: return "movzx_b"; |
| 1043 | case 0xB7: return "movzx_w"; |
| 1044 | case 0xAF: return "imul"; |
| 1045 | case 0xA5: return "shld"; |
| 1046 | case 0xAD: return "shrd"; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1047 | case 0xAC: return "shrd"; // 3-operand version. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1048 | case 0xAB: return "bts"; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1049 | case 0xBD: return "bsr"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1050 | default: return NULL; |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | |
| 1055 | // Disassembled instruction '*instr' and writes it into 'out_buffer'. |
| 1056 | int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer, |
| 1057 | byte* instr) { |
| 1058 | tmp_buffer_pos_ = 0; // starting to write as position 0 |
| 1059 | byte* data = instr; |
| 1060 | // Check for hints. |
| 1061 | const char* branch_hint = NULL; |
| 1062 | // We use these two prefixes only with branch prediction |
| 1063 | if (*data == 0x3E /*ds*/) { |
| 1064 | branch_hint = "predicted taken"; |
| 1065 | data++; |
| 1066 | } else if (*data == 0x2E /*cs*/) { |
| 1067 | branch_hint = "predicted not taken"; |
| 1068 | data++; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1069 | } else if (*data == 0xC4 && *(data + 1) >= 0xc0) { |
| 1070 | vex_byte0_ = *data; |
| 1071 | vex_byte1_ = *(data + 1); |
| 1072 | vex_byte2_ = *(data + 2); |
| 1073 | data += 3; |
| 1074 | } else if (*data == 0xC5 && *(data + 1) >= 0xc0) { |
| 1075 | vex_byte0_ = *data; |
| 1076 | vex_byte1_ = *(data + 1); |
| 1077 | data += 2; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1078 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1079 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1080 | bool processed = true; // Will be set to false if the current instruction |
| 1081 | // is not in 'instructions' table. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1082 | // Decode AVX instructions. |
| 1083 | if (vex_byte0_ != 0) { |
| 1084 | data += AVXInstruction(data); |
| 1085 | } else { |
| 1086 | const InstructionDesc& idesc = instruction_table_->Get(*data); |
| 1087 | switch (idesc.type) { |
| 1088 | case ZERO_OPERANDS_INSTR: |
| 1089 | AppendToBuffer(idesc.mnem); |
| 1090 | data++; |
| 1091 | break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1092 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1093 | case TWO_OPERANDS_INSTR: |
| 1094 | data++; |
| 1095 | data += PrintOperands(idesc.mnem, idesc.op_order_, data); |
| 1096 | break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1097 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1098 | case JUMP_CONDITIONAL_SHORT_INSTR: |
| 1099 | data += JumpConditionalShort(data, branch_hint); |
| 1100 | break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1101 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1102 | case REGISTER_INSTR: |
| 1103 | AppendToBuffer("%s %s", idesc.mnem, NameOfCPURegister(*data & 0x07)); |
| 1104 | data++; |
| 1105 | break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1106 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1107 | case MOVE_REG_INSTR: { |
| 1108 | byte* addr = |
| 1109 | reinterpret_cast<byte*>(*reinterpret_cast<int32_t*>(data + 1)); |
| 1110 | AppendToBuffer("mov %s,%s", NameOfCPURegister(*data & 0x07), |
| 1111 | NameOfAddress(addr)); |
| 1112 | data += 5; |
| 1113 | break; |
| 1114 | } |
| 1115 | |
| 1116 | case CALL_JUMP_INSTR: { |
| 1117 | byte* addr = data + *reinterpret_cast<int32_t*>(data + 1) + 5; |
| 1118 | AppendToBuffer("%s %s", idesc.mnem, NameOfAddress(addr)); |
| 1119 | data += 5; |
| 1120 | break; |
| 1121 | } |
| 1122 | |
| 1123 | case SHORT_IMMEDIATE_INSTR: { |
| 1124 | byte* addr = |
| 1125 | reinterpret_cast<byte*>(*reinterpret_cast<int32_t*>(data + 1)); |
| 1126 | AppendToBuffer("%s eax,%s", idesc.mnem, NameOfAddress(addr)); |
| 1127 | data += 5; |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | case BYTE_IMMEDIATE_INSTR: { |
| 1132 | AppendToBuffer("%s al,0x%x", idesc.mnem, data[1]); |
| 1133 | data += 2; |
| 1134 | break; |
| 1135 | } |
| 1136 | |
| 1137 | case NO_INSTR: |
| 1138 | processed = false; |
| 1139 | break; |
| 1140 | |
| 1141 | default: |
| 1142 | UNIMPLEMENTED(); // This type is not implemented. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1143 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1144 | } |
| 1145 | //---------------------------- |
| 1146 | if (!processed) { |
| 1147 | switch (*data) { |
| 1148 | case 0xC2: |
| 1149 | AppendToBuffer("ret 0x%x", *reinterpret_cast<uint16_t*>(data+1)); |
| 1150 | data += 3; |
| 1151 | break; |
| 1152 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1153 | case 0x6B: { |
| 1154 | data++; |
| 1155 | data += PrintOperands("imul", REG_OPER_OP_ORDER, data); |
| 1156 | AppendToBuffer(",%d", *data); |
| 1157 | data++; |
| 1158 | } break; |
| 1159 | |
| 1160 | case 0x69: { |
| 1161 | data++; |
| 1162 | data += PrintOperands("imul", REG_OPER_OP_ORDER, data); |
| 1163 | AppendToBuffer(",%d", *reinterpret_cast<int32_t*>(data)); |
| 1164 | data += 4; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1165 | } |
| 1166 | break; |
| 1167 | |
| 1168 | case 0xF6: |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1169 | { data++; |
| 1170 | int mod, regop, rm; |
| 1171 | get_modrm(*data, &mod, ®op, &rm); |
| 1172 | if (regop == eax) { |
| 1173 | AppendToBuffer("test_b "); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1174 | data += PrintRightByteOperand(data); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1175 | int32_t imm = *data; |
| 1176 | AppendToBuffer(",0x%x", imm); |
| 1177 | data++; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1178 | } else { |
| 1179 | UnimplementedInstruction(); |
| 1180 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1181 | } |
| 1182 | break; |
| 1183 | |
| 1184 | case 0x81: // fall through |
| 1185 | case 0x83: // 0x81 with sign extension bit set |
| 1186 | data += PrintImmediateOp(data); |
| 1187 | break; |
| 1188 | |
| 1189 | case 0x0F: |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1190 | { byte f0byte = data[1]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1191 | const char* f0mnem = F0Mnem(f0byte); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1192 | if (f0byte == 0x18) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1193 | data += 2; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1194 | int mod, regop, rm; |
| 1195 | get_modrm(*data, &mod, ®op, &rm); |
| 1196 | const char* suffix[] = {"nta", "1", "2", "3"}; |
| 1197 | AppendToBuffer("%s%s ", f0mnem, suffix[regop & 0x03]); |
| 1198 | data += PrintRightOperand(data); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1199 | } else if (f0byte == 0x1F && data[2] == 0) { |
| 1200 | AppendToBuffer("nop"); // 3 byte nop. |
| 1201 | data += 3; |
| 1202 | } else if (f0byte == 0x1F && data[2] == 0x40 && data[3] == 0) { |
| 1203 | AppendToBuffer("nop"); // 4 byte nop. |
| 1204 | data += 4; |
| 1205 | } else if (f0byte == 0x1F && data[2] == 0x44 && data[3] == 0 && |
| 1206 | data[4] == 0) { |
| 1207 | AppendToBuffer("nop"); // 5 byte nop. |
| 1208 | data += 5; |
| 1209 | } else if (f0byte == 0x1F && data[2] == 0x80 && data[3] == 0 && |
| 1210 | data[4] == 0 && data[5] == 0 && data[6] == 0) { |
| 1211 | AppendToBuffer("nop"); // 7 byte nop. |
| 1212 | data += 7; |
| 1213 | } else if (f0byte == 0x1F && data[2] == 0x84 && data[3] == 0 && |
| 1214 | data[4] == 0 && data[5] == 0 && data[6] == 0 && |
| 1215 | data[7] == 0) { |
| 1216 | AppendToBuffer("nop"); // 8 byte nop. |
| 1217 | data += 8; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1218 | } else if (f0byte == 0xA2 || f0byte == 0x31) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1219 | AppendToBuffer("%s", f0mnem); |
| 1220 | data += 2; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1221 | } else if (f0byte == 0x28) { |
| 1222 | data += 2; |
| 1223 | int mod, regop, rm; |
| 1224 | get_modrm(*data, &mod, ®op, &rm); |
| 1225 | AppendToBuffer("movaps %s,%s", |
| 1226 | NameOfXMMRegister(regop), |
| 1227 | NameOfXMMRegister(rm)); |
| 1228 | data++; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1229 | } else if (f0byte == 0x2e) { |
| 1230 | data += 2; |
| 1231 | int mod, regop, rm; |
| 1232 | get_modrm(*data, &mod, ®op, &rm); |
| 1233 | AppendToBuffer("ucomiss %s,", NameOfXMMRegister(regop)); |
| 1234 | data += PrintRightXMMOperand(data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1235 | } else if (f0byte >= 0x53 && f0byte <= 0x5F) { |
| 1236 | const char* const pseudo_op[] = { |
| 1237 | "rcpps", |
| 1238 | "andps", |
| 1239 | "andnps", |
| 1240 | "orps", |
| 1241 | "xorps", |
| 1242 | "addps", |
| 1243 | "mulps", |
| 1244 | "cvtps2pd", |
| 1245 | "cvtdq2ps", |
| 1246 | "subps", |
| 1247 | "minps", |
| 1248 | "divps", |
| 1249 | "maxps", |
| 1250 | }; |
| 1251 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1252 | data += 2; |
| 1253 | int mod, regop, rm; |
| 1254 | get_modrm(*data, &mod, ®op, &rm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1255 | AppendToBuffer("%s %s,", |
| 1256 | pseudo_op[f0byte - 0x53], |
| 1257 | NameOfXMMRegister(regop)); |
| 1258 | data += PrintRightXMMOperand(data); |
| 1259 | } else if (f0byte == 0x50) { |
| 1260 | data += 2; |
| 1261 | int mod, regop, rm; |
| 1262 | get_modrm(*data, &mod, ®op, &rm); |
| 1263 | AppendToBuffer("movmskps %s,%s", |
| 1264 | NameOfCPURegister(regop), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1265 | NameOfXMMRegister(rm)); |
| 1266 | data++; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1267 | } else if (f0byte== 0xC6) { |
| 1268 | // shufps xmm, xmm/m128, imm8 |
| 1269 | data += 2; |
| 1270 | int mod, regop, rm; |
| 1271 | get_modrm(*data, &mod, ®op, &rm); |
| 1272 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1273 | AppendToBuffer("shufps %s,%s,%d", |
| 1274 | NameOfXMMRegister(rm), |
| 1275 | NameOfXMMRegister(regop), |
| 1276 | static_cast<int>(imm8)); |
| 1277 | data += 2; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1278 | } else if ((f0byte & 0xF0) == 0x80) { |
| 1279 | data += JumpConditional(data, branch_hint); |
| 1280 | } else if (f0byte == 0xBE || f0byte == 0xBF || f0byte == 0xB6 || |
| 1281 | f0byte == 0xB7 || f0byte == 0xAF) { |
| 1282 | data += 2; |
| 1283 | data += PrintOperands(f0mnem, REG_OPER_OP_ORDER, data); |
| 1284 | } else if ((f0byte & 0xF0) == 0x90) { |
| 1285 | data += SetCC(data); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1286 | } else if ((f0byte & 0xF0) == 0x40) { |
| 1287 | data += CMov(data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1288 | } else if (f0byte == 0xAB || f0byte == 0xA5 || f0byte == 0xAD) { |
| 1289 | // shrd, shld, bts |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1290 | data += 2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1291 | AppendToBuffer("%s ", f0mnem); |
| 1292 | int mod, regop, rm; |
| 1293 | get_modrm(*data, &mod, ®op, &rm); |
| 1294 | data += PrintRightOperand(data); |
| 1295 | if (f0byte == 0xAB) { |
| 1296 | AppendToBuffer(",%s", NameOfCPURegister(regop)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1297 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1298 | AppendToBuffer(",%s,cl", NameOfCPURegister(regop)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1299 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1300 | } else if (f0byte == 0xBD) { |
| 1301 | data += 2; |
| 1302 | int mod, regop, rm; |
| 1303 | get_modrm(*data, &mod, ®op, &rm); |
| 1304 | AppendToBuffer("%s %s,", f0mnem, NameOfCPURegister(regop)); |
| 1305 | data += PrintRightOperand(data); |
| 1306 | } else { |
| 1307 | UnimplementedInstruction(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1308 | } |
| 1309 | } |
| 1310 | break; |
| 1311 | |
| 1312 | case 0x8F: |
| 1313 | { data++; |
| 1314 | int mod, regop, rm; |
| 1315 | get_modrm(*data, &mod, ®op, &rm); |
| 1316 | if (regop == eax) { |
| 1317 | AppendToBuffer("pop "); |
| 1318 | data += PrintRightOperand(data); |
| 1319 | } |
| 1320 | } |
| 1321 | break; |
| 1322 | |
| 1323 | case 0xFF: |
| 1324 | { data++; |
| 1325 | int mod, regop, rm; |
| 1326 | get_modrm(*data, &mod, ®op, &rm); |
| 1327 | const char* mnem = NULL; |
| 1328 | switch (regop) { |
| 1329 | case esi: mnem = "push"; break; |
| 1330 | case eax: mnem = "inc"; break; |
| 1331 | case ecx: mnem = "dec"; break; |
| 1332 | case edx: mnem = "call"; break; |
| 1333 | case esp: mnem = "jmp"; break; |
| 1334 | default: mnem = "???"; |
| 1335 | } |
| 1336 | AppendToBuffer("%s ", mnem); |
| 1337 | data += PrintRightOperand(data); |
| 1338 | } |
| 1339 | break; |
| 1340 | |
| 1341 | case 0xC7: // imm32, fall through |
| 1342 | case 0xC6: // imm8 |
| 1343 | { bool is_byte = *data == 0xC6; |
| 1344 | data++; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1345 | if (is_byte) { |
| 1346 | AppendToBuffer("%s ", "mov_b"); |
| 1347 | data += PrintRightByteOperand(data); |
| 1348 | int32_t imm = *data; |
| 1349 | AppendToBuffer(",0x%x", imm); |
| 1350 | data++; |
| 1351 | } else { |
| 1352 | AppendToBuffer("%s ", "mov"); |
| 1353 | data += PrintRightOperand(data); |
| 1354 | int32_t imm = *reinterpret_cast<int32_t*>(data); |
| 1355 | AppendToBuffer(",0x%x", imm); |
| 1356 | data += 4; |
| 1357 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1358 | } |
| 1359 | break; |
| 1360 | |
| 1361 | case 0x80: |
| 1362 | { data++; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1363 | int mod, regop, rm; |
| 1364 | get_modrm(*data, &mod, ®op, &rm); |
| 1365 | const char* mnem = NULL; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1366 | switch (regop) { |
| 1367 | case 5: mnem = "subb"; break; |
| 1368 | case 7: mnem = "cmpb"; break; |
| 1369 | default: UnimplementedInstruction(); |
| 1370 | } |
| 1371 | AppendToBuffer("%s ", mnem); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1372 | data += PrintRightByteOperand(data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1373 | int32_t imm = *data; |
| 1374 | AppendToBuffer(",0x%x", imm); |
| 1375 | data++; |
| 1376 | } |
| 1377 | break; |
| 1378 | |
| 1379 | case 0x88: // 8bit, fall through |
| 1380 | case 0x89: // 32bit |
| 1381 | { bool is_byte = *data == 0x88; |
| 1382 | int mod, regop, rm; |
| 1383 | data++; |
| 1384 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1385 | if (is_byte) { |
| 1386 | AppendToBuffer("%s ", "mov_b"); |
| 1387 | data += PrintRightByteOperand(data); |
| 1388 | AppendToBuffer(",%s", NameOfByteCPURegister(regop)); |
| 1389 | } else { |
| 1390 | AppendToBuffer("%s ", "mov"); |
| 1391 | data += PrintRightOperand(data); |
| 1392 | AppendToBuffer(",%s", NameOfCPURegister(regop)); |
| 1393 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1394 | } |
| 1395 | break; |
| 1396 | |
| 1397 | case 0x66: // prefix |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1398 | while (*data == 0x66) data++; |
| 1399 | if (*data == 0xf && data[1] == 0x1f) { |
| 1400 | AppendToBuffer("nop"); // 0x66 prefix |
| 1401 | } else if (*data == 0x90) { |
| 1402 | AppendToBuffer("nop"); // 0x66 prefix |
| 1403 | } else if (*data == 0x8B) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1404 | data++; |
| 1405 | data += PrintOperands("mov_w", REG_OPER_OP_ORDER, data); |
| 1406 | } else if (*data == 0x89) { |
| 1407 | data++; |
| 1408 | int mod, regop, rm; |
| 1409 | get_modrm(*data, &mod, ®op, &rm); |
| 1410 | AppendToBuffer("mov_w "); |
| 1411 | data += PrintRightOperand(data); |
| 1412 | AppendToBuffer(",%s", NameOfCPURegister(regop)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1413 | } else if (*data == 0xC7) { |
| 1414 | data++; |
| 1415 | AppendToBuffer("%s ", "mov_w"); |
| 1416 | data += PrintRightOperand(data); |
| 1417 | int imm = *reinterpret_cast<int16_t*>(data); |
| 1418 | AppendToBuffer(",0x%x", imm); |
| 1419 | data += 2; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1420 | } else if (*data == 0x0F) { |
| 1421 | data++; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1422 | if (*data == 0x38) { |
| 1423 | data++; |
| 1424 | if (*data == 0x17) { |
| 1425 | data++; |
| 1426 | int mod, regop, rm; |
| 1427 | get_modrm(*data, &mod, ®op, &rm); |
| 1428 | AppendToBuffer("ptest %s,%s", |
| 1429 | NameOfXMMRegister(regop), |
| 1430 | NameOfXMMRegister(rm)); |
| 1431 | data++; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1432 | } else if (*data == 0x2A) { |
| 1433 | // movntdqa |
| 1434 | data++; |
| 1435 | int mod, regop, rm; |
| 1436 | get_modrm(*data, &mod, ®op, &rm); |
| 1437 | AppendToBuffer("movntdqa %s,", NameOfXMMRegister(regop)); |
| 1438 | data += PrintRightOperand(data); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1439 | } else { |
| 1440 | UnimplementedInstruction(); |
| 1441 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1442 | } else if (*data == 0x3A) { |
| 1443 | data++; |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1444 | if (*data == 0x0B) { |
| 1445 | data++; |
| 1446 | int mod, regop, rm; |
| 1447 | get_modrm(*data, &mod, ®op, &rm); |
| 1448 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1449 | AppendToBuffer("roundsd %s,%s,%d", |
| 1450 | NameOfXMMRegister(regop), |
| 1451 | NameOfXMMRegister(rm), |
| 1452 | static_cast<int>(imm8)); |
| 1453 | data += 2; |
| 1454 | } else if (*data == 0x16) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1455 | data++; |
| 1456 | int mod, regop, rm; |
| 1457 | get_modrm(*data, &mod, ®op, &rm); |
| 1458 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1459 | AppendToBuffer("pextrd %s,%s,%d", |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1460 | NameOfCPURegister(regop), |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1461 | NameOfXMMRegister(rm), |
| 1462 | static_cast<int>(imm8)); |
| 1463 | data += 2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1464 | } else if (*data == 0x17) { |
| 1465 | data++; |
| 1466 | int mod, regop, rm; |
| 1467 | get_modrm(*data, &mod, ®op, &rm); |
| 1468 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1469 | AppendToBuffer("extractps %s,%s,%d", |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1470 | NameOfCPURegister(rm), |
| 1471 | NameOfXMMRegister(regop), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1472 | static_cast<int>(imm8)); |
| 1473 | data += 2; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1474 | } else if (*data == 0x22) { |
| 1475 | data++; |
| 1476 | int mod, regop, rm; |
| 1477 | get_modrm(*data, &mod, ®op, &rm); |
| 1478 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1479 | AppendToBuffer("pinsrd %s,%s,%d", |
| 1480 | NameOfXMMRegister(regop), |
| 1481 | NameOfCPURegister(rm), |
| 1482 | static_cast<int>(imm8)); |
| 1483 | data += 2; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1484 | } else { |
| 1485 | UnimplementedInstruction(); |
| 1486 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1487 | } else if (*data == 0x2E || *data == 0x2F) { |
| 1488 | const char* mnem = (*data == 0x2E) ? "ucomisd" : "comisd"; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1489 | data++; |
| 1490 | int mod, regop, rm; |
| 1491 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1492 | if (mod == 0x3) { |
| 1493 | AppendToBuffer("%s %s,%s", mnem, |
| 1494 | NameOfXMMRegister(regop), |
| 1495 | NameOfXMMRegister(rm)); |
| 1496 | data++; |
| 1497 | } else { |
| 1498 | AppendToBuffer("%s %s,", mnem, NameOfXMMRegister(regop)); |
| 1499 | data += PrintRightOperand(data); |
| 1500 | } |
| 1501 | } else if (*data == 0x50) { |
| 1502 | data++; |
| 1503 | int mod, regop, rm; |
| 1504 | get_modrm(*data, &mod, ®op, &rm); |
| 1505 | AppendToBuffer("movmskpd %s,%s", |
| 1506 | NameOfCPURegister(regop), |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1507 | NameOfXMMRegister(rm)); |
| 1508 | data++; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1509 | } else if (*data == 0x54) { |
| 1510 | data++; |
| 1511 | int mod, regop, rm; |
| 1512 | get_modrm(*data, &mod, ®op, &rm); |
| 1513 | AppendToBuffer("andpd %s,%s", |
| 1514 | NameOfXMMRegister(regop), |
| 1515 | NameOfXMMRegister(rm)); |
| 1516 | data++; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1517 | } else if (*data == 0x56) { |
| 1518 | data++; |
| 1519 | int mod, regop, rm; |
| 1520 | get_modrm(*data, &mod, ®op, &rm); |
| 1521 | AppendToBuffer("orpd %s,%s", |
| 1522 | NameOfXMMRegister(regop), |
| 1523 | NameOfXMMRegister(rm)); |
| 1524 | data++; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1525 | } else if (*data == 0x57) { |
| 1526 | data++; |
| 1527 | int mod, regop, rm; |
| 1528 | get_modrm(*data, &mod, ®op, &rm); |
| 1529 | AppendToBuffer("xorpd %s,%s", |
| 1530 | NameOfXMMRegister(regop), |
| 1531 | NameOfXMMRegister(rm)); |
| 1532 | data++; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1533 | } else if (*data == 0x6E) { |
| 1534 | data++; |
| 1535 | int mod, regop, rm; |
| 1536 | get_modrm(*data, &mod, ®op, &rm); |
| 1537 | AppendToBuffer("movd %s,", NameOfXMMRegister(regop)); |
| 1538 | data += PrintRightOperand(data); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1539 | } else if (*data == 0x6F) { |
| 1540 | data++; |
| 1541 | int mod, regop, rm; |
| 1542 | get_modrm(*data, &mod, ®op, &rm); |
| 1543 | AppendToBuffer("movdqa %s,", NameOfXMMRegister(regop)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1544 | data += PrintRightXMMOperand(data); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1545 | } else if (*data == 0x70) { |
| 1546 | data++; |
| 1547 | int mod, regop, rm; |
| 1548 | get_modrm(*data, &mod, ®op, &rm); |
| 1549 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1550 | AppendToBuffer("pshufd %s,%s,%d", |
| 1551 | NameOfXMMRegister(regop), |
| 1552 | NameOfXMMRegister(rm), |
| 1553 | static_cast<int>(imm8)); |
| 1554 | data += 2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1555 | } else if (*data == 0x76) { |
| 1556 | data++; |
| 1557 | int mod, regop, rm; |
| 1558 | get_modrm(*data, &mod, ®op, &rm); |
| 1559 | AppendToBuffer("pcmpeqd %s,%s", |
| 1560 | NameOfXMMRegister(regop), |
| 1561 | NameOfXMMRegister(rm)); |
| 1562 | data++; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1563 | } else if (*data == 0x90) { |
| 1564 | data++; |
| 1565 | AppendToBuffer("nop"); // 2 byte nop. |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1566 | } else if (*data == 0xF3) { |
| 1567 | data++; |
| 1568 | int mod, regop, rm; |
| 1569 | get_modrm(*data, &mod, ®op, &rm); |
| 1570 | AppendToBuffer("psllq %s,%s", |
| 1571 | NameOfXMMRegister(regop), |
| 1572 | NameOfXMMRegister(rm)); |
| 1573 | data++; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1574 | } else if (*data == 0x72) { |
| 1575 | data++; |
| 1576 | int mod, regop, rm; |
| 1577 | get_modrm(*data, &mod, ®op, &rm); |
| 1578 | int8_t imm8 = static_cast<int8_t>(data[1]); |
| 1579 | DCHECK(regop == esi || regop == edx); |
| 1580 | AppendToBuffer("%s %s,%d", (regop == esi) ? "pslld" : "psrld", |
| 1581 | NameOfXMMRegister(rm), static_cast<int>(imm8)); |
| 1582 | data += 2; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1583 | } else if (*data == 0x73) { |
| 1584 | data++; |
| 1585 | int mod, regop, rm; |
| 1586 | get_modrm(*data, &mod, ®op, &rm); |
| 1587 | int8_t imm8 = static_cast<int8_t>(data[1]); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1588 | DCHECK(regop == esi || regop == edx); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1589 | AppendToBuffer("%s %s,%d", |
| 1590 | (regop == esi) ? "psllq" : "psrlq", |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1591 | NameOfXMMRegister(rm), |
| 1592 | static_cast<int>(imm8)); |
| 1593 | data += 2; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1594 | } else if (*data == 0xD3) { |
| 1595 | data++; |
| 1596 | int mod, regop, rm; |
| 1597 | get_modrm(*data, &mod, ®op, &rm); |
| 1598 | AppendToBuffer("psrlq %s,%s", |
| 1599 | NameOfXMMRegister(regop), |
| 1600 | NameOfXMMRegister(rm)); |
| 1601 | data++; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1602 | } else if (*data == 0x7F) { |
| 1603 | AppendToBuffer("movdqa "); |
| 1604 | data++; |
| 1605 | int mod, regop, rm; |
| 1606 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1607 | data += PrintRightXMMOperand(data); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1608 | AppendToBuffer(",%s", NameOfXMMRegister(regop)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1609 | } else if (*data == 0x7E) { |
| 1610 | data++; |
| 1611 | int mod, regop, rm; |
| 1612 | get_modrm(*data, &mod, ®op, &rm); |
| 1613 | AppendToBuffer("movd "); |
| 1614 | data += PrintRightOperand(data); |
| 1615 | AppendToBuffer(",%s", NameOfXMMRegister(regop)); |
| 1616 | } else if (*data == 0xDB) { |
| 1617 | data++; |
| 1618 | int mod, regop, rm; |
| 1619 | get_modrm(*data, &mod, ®op, &rm); |
| 1620 | AppendToBuffer("pand %s,%s", |
| 1621 | NameOfXMMRegister(regop), |
| 1622 | NameOfXMMRegister(rm)); |
| 1623 | data++; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1624 | } else if (*data == 0xE7) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1625 | data++; |
| 1626 | int mod, regop, rm; |
| 1627 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1628 | if (mod == 3) { |
| 1629 | AppendToBuffer("movntdq "); |
| 1630 | data += PrintRightOperand(data); |
| 1631 | AppendToBuffer(",%s", NameOfXMMRegister(regop)); |
| 1632 | } else { |
| 1633 | UnimplementedInstruction(); |
| 1634 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1635 | } else if (*data == 0xEF) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1636 | data++; |
| 1637 | int mod, regop, rm; |
| 1638 | get_modrm(*data, &mod, ®op, &rm); |
| 1639 | AppendToBuffer("pxor %s,%s", |
| 1640 | NameOfXMMRegister(regop), |
| 1641 | NameOfXMMRegister(rm)); |
| 1642 | data++; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1643 | } else if (*data == 0xEB) { |
| 1644 | data++; |
| 1645 | int mod, regop, rm; |
| 1646 | get_modrm(*data, &mod, ®op, &rm); |
| 1647 | AppendToBuffer("por %s,%s", |
| 1648 | NameOfXMMRegister(regop), |
| 1649 | NameOfXMMRegister(rm)); |
| 1650 | data++; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1651 | } else { |
| 1652 | UnimplementedInstruction(); |
| 1653 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1654 | } else { |
| 1655 | UnimplementedInstruction(); |
| 1656 | } |
| 1657 | break; |
| 1658 | |
| 1659 | case 0xFE: |
| 1660 | { data++; |
| 1661 | int mod, regop, rm; |
| 1662 | get_modrm(*data, &mod, ®op, &rm); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1663 | if (regop == ecx) { |
| 1664 | AppendToBuffer("dec_b "); |
| 1665 | data += PrintRightOperand(data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1666 | } else { |
| 1667 | UnimplementedInstruction(); |
| 1668 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1669 | } |
| 1670 | break; |
| 1671 | |
| 1672 | case 0x68: |
| 1673 | AppendToBuffer("push 0x%x", *reinterpret_cast<int32_t*>(data+1)); |
| 1674 | data += 5; |
| 1675 | break; |
| 1676 | |
| 1677 | case 0x6A: |
| 1678 | AppendToBuffer("push 0x%x", *reinterpret_cast<int8_t*>(data + 1)); |
| 1679 | data += 2; |
| 1680 | break; |
| 1681 | |
| 1682 | case 0xA8: |
| 1683 | AppendToBuffer("test al,0x%x", *reinterpret_cast<uint8_t*>(data+1)); |
| 1684 | data += 2; |
| 1685 | break; |
| 1686 | |
| 1687 | case 0xA9: |
| 1688 | AppendToBuffer("test eax,0x%x", *reinterpret_cast<int32_t*>(data+1)); |
| 1689 | data += 5; |
| 1690 | break; |
| 1691 | |
| 1692 | case 0xD1: // fall through |
| 1693 | case 0xD3: // fall through |
| 1694 | case 0xC1: |
| 1695 | data += D1D3C1Instruction(data); |
| 1696 | break; |
| 1697 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1698 | case 0xD8: // fall through |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1699 | case 0xD9: // fall through |
| 1700 | case 0xDA: // fall through |
| 1701 | case 0xDB: // fall through |
| 1702 | case 0xDC: // fall through |
| 1703 | case 0xDD: // fall through |
| 1704 | case 0xDE: // fall through |
| 1705 | case 0xDF: |
| 1706 | data += FPUInstruction(data); |
| 1707 | break; |
| 1708 | |
| 1709 | case 0xEB: |
| 1710 | data += JumpShort(data); |
| 1711 | break; |
| 1712 | |
| 1713 | case 0xF2: |
| 1714 | if (*(data+1) == 0x0F) { |
| 1715 | byte b2 = *(data+2); |
| 1716 | if (b2 == 0x11) { |
| 1717 | AppendToBuffer("movsd "); |
| 1718 | data += 3; |
| 1719 | int mod, regop, rm; |
| 1720 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1721 | data += PrintRightXMMOperand(data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1722 | AppendToBuffer(",%s", NameOfXMMRegister(regop)); |
| 1723 | } else if (b2 == 0x10) { |
| 1724 | data += 3; |
| 1725 | int mod, regop, rm; |
| 1726 | get_modrm(*data, &mod, ®op, &rm); |
| 1727 | AppendToBuffer("movsd %s,", NameOfXMMRegister(regop)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1728 | data += PrintRightXMMOperand(data); |
| 1729 | } else if (b2 == 0x5A) { |
| 1730 | data += 3; |
| 1731 | int mod, regop, rm; |
| 1732 | get_modrm(*data, &mod, ®op, &rm); |
| 1733 | AppendToBuffer("cvtsd2ss %s,", NameOfXMMRegister(regop)); |
| 1734 | data += PrintRightXMMOperand(data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1735 | } else { |
| 1736 | const char* mnem = "?"; |
| 1737 | switch (b2) { |
| 1738 | case 0x2A: mnem = "cvtsi2sd"; break; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1739 | case 0x2C: mnem = "cvttsd2si"; break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1740 | case 0x2D: mnem = "cvtsd2si"; break; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1741 | case 0x51: mnem = "sqrtsd"; break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1742 | case 0x58: mnem = "addsd"; break; |
| 1743 | case 0x59: mnem = "mulsd"; break; |
| 1744 | case 0x5C: mnem = "subsd"; break; |
| 1745 | case 0x5E: mnem = "divsd"; break; |
| 1746 | } |
| 1747 | data += 3; |
| 1748 | int mod, regop, rm; |
| 1749 | get_modrm(*data, &mod, ®op, &rm); |
| 1750 | if (b2 == 0x2A) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1751 | AppendToBuffer("%s %s,", mnem, NameOfXMMRegister(regop)); |
| 1752 | data += PrintRightOperand(data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1753 | } else if (b2 == 0x2C || b2 == 0x2D) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1754 | AppendToBuffer("%s %s,", mnem, NameOfCPURegister(regop)); |
| 1755 | data += PrintRightXMMOperand(data); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1756 | } else if (b2 == 0xC2) { |
| 1757 | // Intel manual 2A, Table 3-18. |
| 1758 | const char* const pseudo_op[] = { |
| 1759 | "cmpeqsd", |
| 1760 | "cmpltsd", |
| 1761 | "cmplesd", |
| 1762 | "cmpunordsd", |
| 1763 | "cmpneqsd", |
| 1764 | "cmpnltsd", |
| 1765 | "cmpnlesd", |
| 1766 | "cmpordsd" |
| 1767 | }; |
| 1768 | AppendToBuffer("%s %s,%s", |
| 1769 | pseudo_op[data[1]], |
| 1770 | NameOfXMMRegister(regop), |
| 1771 | NameOfXMMRegister(rm)); |
| 1772 | data += 2; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1773 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1774 | AppendToBuffer("%s %s,", mnem, NameOfXMMRegister(regop)); |
| 1775 | data += PrintRightXMMOperand(data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1776 | } |
| 1777 | } |
| 1778 | } else { |
| 1779 | UnimplementedInstruction(); |
| 1780 | } |
| 1781 | break; |
| 1782 | |
| 1783 | case 0xF3: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1784 | if (*(data+1) == 0x0F) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1785 | byte b2 = *(data+2); |
| 1786 | if (b2 == 0x11) { |
| 1787 | AppendToBuffer("movss "); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1788 | data += 3; |
| 1789 | int mod, regop, rm; |
| 1790 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1791 | data += PrintRightXMMOperand(data); |
| 1792 | AppendToBuffer(",%s", NameOfXMMRegister(regop)); |
| 1793 | } else if (b2 == 0x10) { |
| 1794 | data += 3; |
| 1795 | int mod, regop, rm; |
| 1796 | get_modrm(*data, &mod, ®op, &rm); |
| 1797 | AppendToBuffer("movss %s,", NameOfXMMRegister(regop)); |
| 1798 | data += PrintRightXMMOperand(data); |
| 1799 | } else if (b2 == 0x2C) { |
| 1800 | data += 3; |
| 1801 | int mod, regop, rm; |
| 1802 | get_modrm(*data, &mod, ®op, &rm); |
| 1803 | AppendToBuffer("cvttss2si %s,", NameOfCPURegister(regop)); |
| 1804 | data += PrintRightXMMOperand(data); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1805 | } else if (b2 == 0x58) { |
| 1806 | data += 3; |
| 1807 | int mod, regop, rm; |
| 1808 | get_modrm(*data, &mod, ®op, &rm); |
| 1809 | AppendToBuffer("addss %s,", NameOfXMMRegister(regop)); |
| 1810 | data += PrintRightXMMOperand(data); |
| 1811 | } else if (b2 == 0x59) { |
| 1812 | data += 3; |
| 1813 | int mod, regop, rm; |
| 1814 | get_modrm(*data, &mod, ®op, &rm); |
| 1815 | AppendToBuffer("mulss %s,", NameOfXMMRegister(regop)); |
| 1816 | data += PrintRightXMMOperand(data); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1817 | } else if (b2 == 0x5A) { |
| 1818 | data += 3; |
| 1819 | int mod, regop, rm; |
| 1820 | get_modrm(*data, &mod, ®op, &rm); |
| 1821 | AppendToBuffer("cvtss2sd %s,", NameOfXMMRegister(regop)); |
| 1822 | data += PrintRightXMMOperand(data); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1823 | } else if (b2 == 0x5c) { |
| 1824 | data += 3; |
| 1825 | int mod, regop, rm; |
| 1826 | get_modrm(*data, &mod, ®op, &rm); |
| 1827 | AppendToBuffer("subss %s,", NameOfXMMRegister(regop)); |
| 1828 | data += PrintRightXMMOperand(data); |
| 1829 | } else if (b2 == 0x5e) { |
| 1830 | data += 3; |
| 1831 | int mod, regop, rm; |
| 1832 | get_modrm(*data, &mod, ®op, &rm); |
| 1833 | AppendToBuffer("divss %s,", NameOfXMMRegister(regop)); |
| 1834 | data += PrintRightXMMOperand(data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1835 | } else if (b2 == 0x6F) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1836 | data += 3; |
| 1837 | int mod, regop, rm; |
| 1838 | get_modrm(*data, &mod, ®op, &rm); |
| 1839 | AppendToBuffer("movdqu %s,", NameOfXMMRegister(regop)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1840 | data += PrintRightXMMOperand(data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1841 | } else if (b2 == 0x7F) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1842 | AppendToBuffer("movdqu "); |
| 1843 | data += 3; |
| 1844 | int mod, regop, rm; |
| 1845 | get_modrm(*data, &mod, ®op, &rm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1846 | data += PrintRightXMMOperand(data); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1847 | AppendToBuffer(",%s", NameOfXMMRegister(regop)); |
| 1848 | } else { |
| 1849 | UnimplementedInstruction(); |
| 1850 | } |
| 1851 | } else if (*(data+1) == 0xA5) { |
| 1852 | data += 2; |
| 1853 | AppendToBuffer("rep_movs"); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1854 | } else if (*(data+1) == 0xAB) { |
| 1855 | data += 2; |
| 1856 | AppendToBuffer("rep_stos"); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1857 | } else { |
| 1858 | UnimplementedInstruction(); |
| 1859 | } |
| 1860 | break; |
| 1861 | |
| 1862 | case 0xF7: |
| 1863 | data += F7Instruction(data); |
| 1864 | break; |
| 1865 | |
| 1866 | default: |
| 1867 | UnimplementedInstruction(); |
| 1868 | } |
| 1869 | } |
| 1870 | |
| 1871 | if (tmp_buffer_pos_ < sizeof tmp_buffer_) { |
| 1872 | tmp_buffer_[tmp_buffer_pos_] = '\0'; |
| 1873 | } |
| 1874 | |
| 1875 | int instr_len = data - instr; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1876 | if (instr_len == 0) { |
| 1877 | printf("%02x", *data); |
| 1878 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1879 | DCHECK(instr_len > 0); // Ensure progress. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1880 | |
| 1881 | int outp = 0; |
| 1882 | // Instruction bytes. |
| 1883 | for (byte* bp = instr; bp < data; bp++) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1884 | outp += v8::internal::SNPrintF(out_buffer + outp, |
| 1885 | "%02x", |
| 1886 | *bp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1887 | } |
| 1888 | for (int i = 6 - instr_len; i >= 0; i--) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1889 | outp += v8::internal::SNPrintF(out_buffer + outp, " "); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1890 | } |
| 1891 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1892 | outp += v8::internal::SNPrintF(out_buffer + outp, |
| 1893 | " %s", |
| 1894 | tmp_buffer_.start()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1895 | return instr_len; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1896 | } // NOLINT (function is too long) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1897 | |
| 1898 | |
| 1899 | //------------------------------------------------------------------------------ |
| 1900 | |
| 1901 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1902 | static const char* const cpu_regs[8] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1903 | "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi" |
| 1904 | }; |
| 1905 | |
| 1906 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1907 | static const char* const byte_cpu_regs[8] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1908 | "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" |
| 1909 | }; |
| 1910 | |
| 1911 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1912 | static const char* const xmm_regs[8] = { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1913 | "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" |
| 1914 | }; |
| 1915 | |
| 1916 | |
| 1917 | const char* NameConverter::NameOfAddress(byte* addr) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1918 | v8::internal::SNPrintF(tmp_buffer_, "%p", addr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1919 | return tmp_buffer_.start(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1920 | } |
| 1921 | |
| 1922 | |
| 1923 | const char* NameConverter::NameOfConstant(byte* addr) const { |
| 1924 | return NameOfAddress(addr); |
| 1925 | } |
| 1926 | |
| 1927 | |
| 1928 | const char* NameConverter::NameOfCPURegister(int reg) const { |
| 1929 | if (0 <= reg && reg < 8) return cpu_regs[reg]; |
| 1930 | return "noreg"; |
| 1931 | } |
| 1932 | |
| 1933 | |
| 1934 | const char* NameConverter::NameOfByteCPURegister(int reg) const { |
| 1935 | if (0 <= reg && reg < 8) return byte_cpu_regs[reg]; |
| 1936 | return "noreg"; |
| 1937 | } |
| 1938 | |
| 1939 | |
| 1940 | const char* NameConverter::NameOfXMMRegister(int reg) const { |
| 1941 | if (0 <= reg && reg < 8) return xmm_regs[reg]; |
| 1942 | return "noxmmreg"; |
| 1943 | } |
| 1944 | |
| 1945 | |
| 1946 | const char* NameConverter::NameInCode(byte* addr) const { |
| 1947 | // IA32 does not embed debug strings at the moment. |
| 1948 | UNREACHABLE(); |
| 1949 | return ""; |
| 1950 | } |
| 1951 | |
| 1952 | |
| 1953 | //------------------------------------------------------------------------------ |
| 1954 | |
| 1955 | Disassembler::Disassembler(const NameConverter& converter) |
| 1956 | : converter_(converter) {} |
| 1957 | |
| 1958 | |
| 1959 | Disassembler::~Disassembler() {} |
| 1960 | |
| 1961 | |
| 1962 | int Disassembler::InstructionDecode(v8::internal::Vector<char> buffer, |
| 1963 | byte* instruction) { |
| 1964 | DisassemblerIA32 d(converter_, false /*do not crash if unimplemented*/); |
| 1965 | return d.InstructionDecode(buffer, instruction); |
| 1966 | } |
| 1967 | |
| 1968 | |
| 1969 | // The IA-32 assembler does not currently use constant pools. |
| 1970 | int Disassembler::ConstantPoolSizeAt(byte* instruction) { return -1; } |
| 1971 | |
| 1972 | |
| 1973 | /*static*/ void Disassembler::Disassemble(FILE* f, byte* begin, byte* end) { |
| 1974 | NameConverter converter; |
| 1975 | Disassembler d(converter); |
| 1976 | for (byte* pc = begin; pc < end;) { |
| 1977 | v8::internal::EmbeddedVector<char, 128> buffer; |
| 1978 | buffer[0] = '\0'; |
| 1979 | byte* prev_pc = pc; |
| 1980 | pc += d.InstructionDecode(buffer, pc); |
| 1981 | fprintf(f, "%p", prev_pc); |
| 1982 | fprintf(f, " "); |
| 1983 | |
| 1984 | for (byte* bp = prev_pc; bp < pc; bp++) { |
| 1985 | fprintf(f, "%02x", *bp); |
| 1986 | } |
| 1987 | for (int i = 6 - (pc - prev_pc); i >= 0; i--) { |
| 1988 | fprintf(f, " "); |
| 1989 | } |
| 1990 | fprintf(f, " %s\n", buffer.start()); |
| 1991 | } |
| 1992 | } |
| 1993 | |
| 1994 | |
| 1995 | } // namespace disasm |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1996 | |
| 1997 | #endif // V8_TARGET_ARCH_IA32 |