Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1 | // Copyright (c) 1994-2006 Sun Microsystems Inc. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2 | // All Rights Reserved. |
| 3 | // |
| 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 | // |
| 8 | // - Redistributions of source code must retain the above copyright notice, |
| 9 | // this list of conditions and the following disclaimer. |
| 10 | // |
| 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. |
| 30 | |
| 31 | // The original source code covered by the above license above has been |
| 32 | // modified significantly by Google Inc. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 33 | // Copyright 2012 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 34 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 35 | #include "assembler.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 36 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 37 | #include <math.h> // For cos, log, pow, sin, tan, etc. |
| 38 | #include "api.h" |
| 39 | #include "builtins.h" |
| 40 | #include "counters.h" |
| 41 | #include "cpu.h" |
| 42 | #include "debug.h" |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 43 | #include "deoptimizer.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | #include "execution.h" |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 45 | #include "ic.h" |
| 46 | #include "isolate.h" |
| 47 | #include "jsregexp.h" |
| 48 | #include "lazy-instance.h" |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 49 | #include "platform.h" |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 50 | #include "regexp-macro-assembler.h" |
| 51 | #include "regexp-stack.h" |
| 52 | #include "runtime.h" |
| 53 | #include "serialize.h" |
| 54 | #include "store-buffer-inl.h" |
| 55 | #include "stub-cache.h" |
| 56 | #include "token.h" |
| 57 | |
| 58 | #if V8_TARGET_ARCH_IA32 |
| 59 | #include "ia32/assembler-ia32-inl.h" |
| 60 | #elif V8_TARGET_ARCH_X64 |
| 61 | #include "x64/assembler-x64-inl.h" |
| 62 | #elif V8_TARGET_ARCH_ARM |
| 63 | #include "arm/assembler-arm-inl.h" |
| 64 | #elif V8_TARGET_ARCH_MIPS |
| 65 | #include "mips/assembler-mips-inl.h" |
| 66 | #else |
| 67 | #error "Unknown architecture." |
| 68 | #endif |
| 69 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 70 | // Include native regexp-macro-assembler. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 71 | #ifndef V8_INTERPRETED_REGEXP |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 72 | #if V8_TARGET_ARCH_IA32 |
| 73 | #include "ia32/regexp-macro-assembler-ia32.h" |
| 74 | #elif V8_TARGET_ARCH_X64 |
| 75 | #include "x64/regexp-macro-assembler-x64.h" |
| 76 | #elif V8_TARGET_ARCH_ARM |
| 77 | #include "arm/regexp-macro-assembler-arm.h" |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 78 | #elif V8_TARGET_ARCH_MIPS |
| 79 | #include "mips/regexp-macro-assembler-mips.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 80 | #else // Unknown architecture. |
| 81 | #error "Unknown architecture." |
| 82 | #endif // Target architecture. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 83 | #endif // V8_INTERPRETED_REGEXP |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 84 | |
| 85 | namespace v8 { |
| 86 | namespace internal { |
| 87 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 88 | // ----------------------------------------------------------------------------- |
| 89 | // Common double constants. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 90 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 91 | struct DoubleConstant BASE_EMBEDDED { |
| 92 | double min_int; |
| 93 | double one_half; |
| 94 | double minus_zero; |
| 95 | double zero; |
| 96 | double uint8_max_value; |
| 97 | double negative_infinity; |
| 98 | double canonical_non_hole_nan; |
| 99 | double the_hole_nan; |
| 100 | }; |
| 101 | |
| 102 | struct InitializeDoubleConstants { |
| 103 | static void Construct(DoubleConstant* double_constants) { |
| 104 | double_constants->min_int = kMinInt; |
| 105 | double_constants->one_half = 0.5; |
| 106 | double_constants->minus_zero = -0.0; |
| 107 | double_constants->uint8_max_value = 255; |
| 108 | double_constants->zero = 0.0; |
| 109 | double_constants->canonical_non_hole_nan = OS::nan_value(); |
| 110 | double_constants->the_hole_nan = BitCast<double>(kHoleNanInt64); |
| 111 | double_constants->negative_infinity = -V8_INFINITY; |
| 112 | } |
| 113 | }; |
| 114 | |
| 115 | static LazyInstance<DoubleConstant, InitializeDoubleConstants>::type |
| 116 | double_constants = LAZY_INSTANCE_INITIALIZER; |
| 117 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 118 | const char* const RelocInfo::kFillerCommentString = "DEOPTIMIZATION PADDING"; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 119 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 120 | // ----------------------------------------------------------------------------- |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 121 | // Implementation of AssemblerBase |
| 122 | |
| 123 | AssemblerBase::AssemblerBase(Isolate* isolate) |
| 124 | : isolate_(isolate), |
| 125 | jit_cookie_(0) { |
| 126 | if (FLAG_mask_constants_with_cookie && isolate != NULL) { |
| 127 | jit_cookie_ = V8::RandomPrivate(isolate); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | |
| 132 | // ----------------------------------------------------------------------------- |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 133 | // Implementation of Label |
| 134 | |
| 135 | int Label::pos() const { |
| 136 | if (pos_ < 0) return -pos_ - 1; |
| 137 | if (pos_ > 0) return pos_ - 1; |
| 138 | UNREACHABLE(); |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | |
| 143 | // ----------------------------------------------------------------------------- |
| 144 | // Implementation of RelocInfoWriter and RelocIterator |
| 145 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 146 | // Relocation information is written backwards in memory, from high addresses |
| 147 | // towards low addresses, byte by byte. Therefore, in the encodings listed |
| 148 | // below, the first byte listed it at the highest address, and successive |
| 149 | // bytes in the record are at progressively lower addresses. |
| 150 | // |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 151 | // Encoding |
| 152 | // |
| 153 | // The most common modes are given single-byte encodings. Also, it is |
| 154 | // easy to identify the type of reloc info and skip unwanted modes in |
| 155 | // an iteration. |
| 156 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 157 | // The encoding relies on the fact that there are fewer than 14 |
| 158 | // different non-compactly encoded relocation modes. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 159 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 160 | // The first byte of a relocation record has a tag in its low 2 bits: |
| 161 | // Here are the record schemes, depending on the low tag and optional higher |
| 162 | // tags. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 163 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 164 | // Low tag: |
| 165 | // 00: embedded_object: [6-bit pc delta] 00 |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 166 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 167 | // 01: code_target: [6-bit pc delta] 01 |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 168 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 169 | // 10: short_data_record: [6-bit pc delta] 10 followed by |
| 170 | // [6-bit data delta] [2-bit data type tag] |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 171 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 172 | // 11: long_record [2-bit high tag][4 bit middle_tag] 11 |
| 173 | // followed by variable data depending on type. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 174 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 175 | // 2-bit data type tags, used in short_data_record and data_jump long_record: |
| 176 | // code_target_with_id: 00 |
| 177 | // position: 01 |
| 178 | // statement_position: 10 |
| 179 | // comment: 11 (not used in short_data_record) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 180 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 181 | // Long record format: |
| 182 | // 4-bit middle_tag: |
| 183 | // 0000 - 1100 : Short record for RelocInfo::Mode middle_tag + 2 |
| 184 | // (The middle_tag encodes rmode - RelocInfo::LAST_COMPACT_ENUM, |
| 185 | // and is between 0000 and 1100) |
| 186 | // The format is: |
| 187 | // 00 [4 bit middle_tag] 11 followed by |
| 188 | // 00 [6 bit pc delta] |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 189 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 190 | // 1101: not used (would allow one more relocation mode to be added) |
| 191 | // 1110: long_data_record |
| 192 | // The format is: [2-bit data_type_tag] 1110 11 |
| 193 | // signed intptr_t, lowest byte written first |
| 194 | // (except data_type code_target_with_id, which |
| 195 | // is followed by a signed int, not intptr_t.) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 196 | // |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 197 | // 1111: long_pc_jump |
| 198 | // The format is: |
| 199 | // pc-jump: 00 1111 11, |
| 200 | // 00 [6 bits pc delta] |
| 201 | // or |
| 202 | // pc-jump (variable length): |
| 203 | // 01 1111 11, |
| 204 | // [7 bits data] 0 |
| 205 | // ... |
| 206 | // [7 bits data] 1 |
| 207 | // (Bits 6..31 of pc delta, with leading zeroes |
| 208 | // dropped, and last non-zero chunk tagged with 1.) |
| 209 | |
| 210 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 211 | const int kMaxRelocModes = 14; |
| 212 | |
| 213 | const int kTagBits = 2; |
| 214 | const int kTagMask = (1 << kTagBits) - 1; |
| 215 | const int kExtraTagBits = 4; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 216 | const int kLocatableTypeTagBits = 2; |
| 217 | const int kSmallDataBits = kBitsPerByte - kLocatableTypeTagBits; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 218 | |
| 219 | const int kEmbeddedObjectTag = 0; |
| 220 | const int kCodeTargetTag = 1; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 221 | const int kLocatableTag = 2; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 222 | const int kDefaultTag = 3; |
| 223 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 224 | const int kPCJumpExtraTag = (1 << kExtraTagBits) - 1; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 225 | |
| 226 | const int kSmallPCDeltaBits = kBitsPerByte - kTagBits; |
| 227 | const int kSmallPCDeltaMask = (1 << kSmallPCDeltaBits) - 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 228 | const int RelocInfo::kMaxSmallPCDelta = kSmallPCDeltaMask; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 229 | |
| 230 | const int kVariableLengthPCJumpTopTag = 1; |
| 231 | const int kChunkBits = 7; |
| 232 | const int kChunkMask = (1 << kChunkBits) - 1; |
| 233 | const int kLastChunkTagBits = 1; |
| 234 | const int kLastChunkTagMask = 1; |
| 235 | const int kLastChunkTag = 1; |
| 236 | |
| 237 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 238 | const int kDataJumpExtraTag = kPCJumpExtraTag - 1; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 239 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 240 | const int kCodeWithIdTag = 0; |
| 241 | const int kNonstatementPositionTag = 1; |
| 242 | const int kStatementPositionTag = 2; |
| 243 | const int kCommentTag = 3; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 244 | |
| 245 | |
| 246 | uint32_t RelocInfoWriter::WriteVariableLengthPCJump(uint32_t pc_delta) { |
| 247 | // Return if the pc_delta can fit in kSmallPCDeltaBits bits. |
| 248 | // Otherwise write a variable length PC jump for the bits that do |
| 249 | // not fit in the kSmallPCDeltaBits bits. |
| 250 | if (is_uintn(pc_delta, kSmallPCDeltaBits)) return pc_delta; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 251 | WriteExtraTag(kPCJumpExtraTag, kVariableLengthPCJumpTopTag); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 252 | uint32_t pc_jump = pc_delta >> kSmallPCDeltaBits; |
| 253 | ASSERT(pc_jump > 0); |
| 254 | // Write kChunkBits size chunks of the pc_jump. |
| 255 | for (; pc_jump > 0; pc_jump = pc_jump >> kChunkBits) { |
| 256 | byte b = pc_jump & kChunkMask; |
| 257 | *--pos_ = b << kLastChunkTagBits; |
| 258 | } |
| 259 | // Tag the last chunk so it can be identified. |
| 260 | *pos_ = *pos_ | kLastChunkTag; |
| 261 | // Return the remaining kSmallPCDeltaBits of the pc_delta. |
| 262 | return pc_delta & kSmallPCDeltaMask; |
| 263 | } |
| 264 | |
| 265 | |
| 266 | void RelocInfoWriter::WriteTaggedPC(uint32_t pc_delta, int tag) { |
| 267 | // Write a byte of tagged pc-delta, possibly preceded by var. length pc-jump. |
| 268 | pc_delta = WriteVariableLengthPCJump(pc_delta); |
| 269 | *--pos_ = pc_delta << kTagBits | tag; |
| 270 | } |
| 271 | |
| 272 | |
| 273 | void RelocInfoWriter::WriteTaggedData(intptr_t data_delta, int tag) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 274 | *--pos_ = static_cast<byte>(data_delta << kLocatableTypeTagBits | tag); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | |
| 278 | void RelocInfoWriter::WriteExtraTag(int extra_tag, int top_tag) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 279 | *--pos_ = static_cast<int>(top_tag << (kTagBits + kExtraTagBits) | |
| 280 | extra_tag << kTagBits | |
| 281 | kDefaultTag); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | |
| 285 | void RelocInfoWriter::WriteExtraTaggedPC(uint32_t pc_delta, int extra_tag) { |
| 286 | // Write two-byte tagged pc-delta, possibly preceded by var. length pc-jump. |
| 287 | pc_delta = WriteVariableLengthPCJump(pc_delta); |
| 288 | WriteExtraTag(extra_tag, 0); |
| 289 | *--pos_ = pc_delta; |
| 290 | } |
| 291 | |
| 292 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 293 | void RelocInfoWriter::WriteExtraTaggedIntData(int data_delta, int top_tag) { |
| 294 | WriteExtraTag(kDataJumpExtraTag, top_tag); |
| 295 | for (int i = 0; i < kIntSize; i++) { |
| 296 | *--pos_ = static_cast<byte>(data_delta); |
| 297 | // Signed right shift is arithmetic shift. Tested in test-utils.cc. |
| 298 | data_delta = data_delta >> kBitsPerByte; |
| 299 | } |
| 300 | } |
| 301 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 302 | void RelocInfoWriter::WriteExtraTaggedData(intptr_t data_delta, int top_tag) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 303 | WriteExtraTag(kDataJumpExtraTag, top_tag); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 304 | for (int i = 0; i < kIntptrSize; i++) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 305 | *--pos_ = static_cast<byte>(data_delta); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 306 | // Signed right shift is arithmetic shift. Tested in test-utils.cc. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 307 | data_delta = data_delta >> kBitsPerByte; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | |
| 312 | void RelocInfoWriter::Write(const RelocInfo* rinfo) { |
| 313 | #ifdef DEBUG |
| 314 | byte* begin_pos = pos_; |
| 315 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 316 | ASSERT(rinfo->pc() - last_pc_ >= 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 317 | ASSERT(RelocInfo::NUMBER_OF_MODES - RelocInfo::LAST_COMPACT_ENUM <= |
| 318 | kMaxRelocModes); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 319 | // Use unsigned delta-encoding for pc. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 320 | uint32_t pc_delta = static_cast<uint32_t>(rinfo->pc() - last_pc_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 321 | RelocInfo::Mode rmode = rinfo->rmode(); |
| 322 | |
| 323 | // The two most common modes are given small tags, and usually fit in a byte. |
| 324 | if (rmode == RelocInfo::EMBEDDED_OBJECT) { |
| 325 | WriteTaggedPC(pc_delta, kEmbeddedObjectTag); |
| 326 | } else if (rmode == RelocInfo::CODE_TARGET) { |
| 327 | WriteTaggedPC(pc_delta, kCodeTargetTag); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 328 | ASSERT(begin_pos - pos_ <= RelocInfo::kMaxCallSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 329 | } else if (rmode == RelocInfo::CODE_TARGET_WITH_ID) { |
| 330 | // Use signed delta-encoding for id. |
| 331 | ASSERT(static_cast<int>(rinfo->data()) == rinfo->data()); |
| 332 | int id_delta = static_cast<int>(rinfo->data()) - last_id_; |
| 333 | // Check if delta is small enough to fit in a tagged byte. |
| 334 | if (is_intn(id_delta, kSmallDataBits)) { |
| 335 | WriteTaggedPC(pc_delta, kLocatableTag); |
| 336 | WriteTaggedData(id_delta, kCodeWithIdTag); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 337 | } else { |
| 338 | // Otherwise, use costly encoding. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 339 | WriteExtraTaggedPC(pc_delta, kPCJumpExtraTag); |
| 340 | WriteExtraTaggedIntData(id_delta, kCodeWithIdTag); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 341 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 342 | last_id_ = static_cast<int>(rinfo->data()); |
| 343 | } else if (RelocInfo::IsPosition(rmode)) { |
| 344 | // Use signed delta-encoding for position. |
| 345 | ASSERT(static_cast<int>(rinfo->data()) == rinfo->data()); |
| 346 | int pos_delta = static_cast<int>(rinfo->data()) - last_position_; |
| 347 | int pos_type_tag = (rmode == RelocInfo::POSITION) ? kNonstatementPositionTag |
| 348 | : kStatementPositionTag; |
| 349 | // Check if delta is small enough to fit in a tagged byte. |
| 350 | if (is_intn(pos_delta, kSmallDataBits)) { |
| 351 | WriteTaggedPC(pc_delta, kLocatableTag); |
| 352 | WriteTaggedData(pos_delta, pos_type_tag); |
| 353 | } else { |
| 354 | // Otherwise, use costly encoding. |
| 355 | WriteExtraTaggedPC(pc_delta, kPCJumpExtraTag); |
| 356 | WriteExtraTaggedIntData(pos_delta, pos_type_tag); |
| 357 | } |
| 358 | last_position_ = static_cast<int>(rinfo->data()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 359 | } else if (RelocInfo::IsComment(rmode)) { |
| 360 | // Comments are normally not generated, so we use the costly encoding. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 361 | WriteExtraTaggedPC(pc_delta, kPCJumpExtraTag); |
| 362 | WriteExtraTaggedData(rinfo->data(), kCommentTag); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 363 | ASSERT(begin_pos - pos_ >= RelocInfo::kMinRelocCommentSize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 364 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 365 | ASSERT(rmode > RelocInfo::LAST_COMPACT_ENUM); |
| 366 | int saved_mode = rmode - RelocInfo::LAST_COMPACT_ENUM; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 367 | // For all other modes we simply use the mode as the extra tag. |
| 368 | // None of these modes need a data component. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 369 | ASSERT(saved_mode < kPCJumpExtraTag && saved_mode < kDataJumpExtraTag); |
| 370 | WriteExtraTaggedPC(pc_delta, saved_mode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 371 | } |
| 372 | last_pc_ = rinfo->pc(); |
| 373 | #ifdef DEBUG |
| 374 | ASSERT(begin_pos - pos_ <= kMaxSize); |
| 375 | #endif |
| 376 | } |
| 377 | |
| 378 | |
| 379 | inline int RelocIterator::AdvanceGetTag() { |
| 380 | return *--pos_ & kTagMask; |
| 381 | } |
| 382 | |
| 383 | |
| 384 | inline int RelocIterator::GetExtraTag() { |
| 385 | return (*pos_ >> kTagBits) & ((1 << kExtraTagBits) - 1); |
| 386 | } |
| 387 | |
| 388 | |
| 389 | inline int RelocIterator::GetTopTag() { |
| 390 | return *pos_ >> (kTagBits + kExtraTagBits); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | inline void RelocIterator::ReadTaggedPC() { |
| 395 | rinfo_.pc_ += *pos_ >> kTagBits; |
| 396 | } |
| 397 | |
| 398 | |
| 399 | inline void RelocIterator::AdvanceReadPC() { |
| 400 | rinfo_.pc_ += *--pos_; |
| 401 | } |
| 402 | |
| 403 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 404 | void RelocIterator::AdvanceReadId() { |
| 405 | int x = 0; |
| 406 | for (int i = 0; i < kIntSize; i++) { |
| 407 | x |= static_cast<int>(*--pos_) << i * kBitsPerByte; |
| 408 | } |
| 409 | last_id_ += x; |
| 410 | rinfo_.data_ = last_id_; |
| 411 | } |
| 412 | |
| 413 | |
| 414 | void RelocIterator::AdvanceReadPosition() { |
| 415 | int x = 0; |
| 416 | for (int i = 0; i < kIntSize; i++) { |
| 417 | x |= static_cast<int>(*--pos_) << i * kBitsPerByte; |
| 418 | } |
| 419 | last_position_ += x; |
| 420 | rinfo_.data_ = last_position_; |
| 421 | } |
| 422 | |
| 423 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 424 | void RelocIterator::AdvanceReadData() { |
| 425 | intptr_t x = 0; |
| 426 | for (int i = 0; i < kIntptrSize; i++) { |
| 427 | x |= static_cast<intptr_t>(*--pos_) << i * kBitsPerByte; |
| 428 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 429 | rinfo_.data_ = x; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | |
| 433 | void RelocIterator::AdvanceReadVariableLengthPCJump() { |
| 434 | // Read the 32-kSmallPCDeltaBits most significant bits of the |
| 435 | // pc jump in kChunkBits bit chunks and shift them into place. |
| 436 | // Stop when the last chunk is encountered. |
| 437 | uint32_t pc_jump = 0; |
| 438 | for (int i = 0; i < kIntSize; i++) { |
| 439 | byte pc_jump_part = *--pos_; |
| 440 | pc_jump |= (pc_jump_part >> kLastChunkTagBits) << i * kChunkBits; |
| 441 | if ((pc_jump_part & kLastChunkTagMask) == 1) break; |
| 442 | } |
| 443 | // The least significant kSmallPCDeltaBits bits will be added |
| 444 | // later. |
| 445 | rinfo_.pc_ += pc_jump << kSmallPCDeltaBits; |
| 446 | } |
| 447 | |
| 448 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 449 | inline int RelocIterator::GetLocatableTypeTag() { |
| 450 | return *pos_ & ((1 << kLocatableTypeTagBits) - 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 454 | inline void RelocIterator::ReadTaggedId() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 455 | int8_t signed_b = *pos_; |
| 456 | // Signed right shift is arithmetic shift. Tested in test-utils.cc. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 457 | last_id_ += signed_b >> kLocatableTypeTagBits; |
| 458 | rinfo_.data_ = last_id_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 462 | inline void RelocIterator::ReadTaggedPosition() { |
| 463 | int8_t signed_b = *pos_; |
| 464 | // Signed right shift is arithmetic shift. Tested in test-utils.cc. |
| 465 | last_position_ += signed_b >> kLocatableTypeTagBits; |
| 466 | rinfo_.data_ = last_position_; |
| 467 | } |
| 468 | |
| 469 | |
| 470 | static inline RelocInfo::Mode GetPositionModeFromTag(int tag) { |
| 471 | ASSERT(tag == kNonstatementPositionTag || |
| 472 | tag == kStatementPositionTag); |
| 473 | return (tag == kNonstatementPositionTag) ? |
| 474 | RelocInfo::POSITION : |
| 475 | RelocInfo::STATEMENT_POSITION; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | |
| 479 | void RelocIterator::next() { |
| 480 | ASSERT(!done()); |
| 481 | // Basically, do the opposite of RelocInfoWriter::Write. |
| 482 | // Reading of data is as far as possible avoided for unwanted modes, |
| 483 | // but we must always update the pc. |
| 484 | // |
| 485 | // We exit this loop by returning when we find a mode we want. |
| 486 | while (pos_ > end_) { |
| 487 | int tag = AdvanceGetTag(); |
| 488 | if (tag == kEmbeddedObjectTag) { |
| 489 | ReadTaggedPC(); |
| 490 | if (SetMode(RelocInfo::EMBEDDED_OBJECT)) return; |
| 491 | } else if (tag == kCodeTargetTag) { |
| 492 | ReadTaggedPC(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 493 | if (SetMode(RelocInfo::CODE_TARGET)) return; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 494 | } else if (tag == kLocatableTag) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 495 | ReadTaggedPC(); |
| 496 | Advance(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 497 | int locatable_tag = GetLocatableTypeTag(); |
| 498 | if (locatable_tag == kCodeWithIdTag) { |
| 499 | if (SetMode(RelocInfo::CODE_TARGET_WITH_ID)) { |
| 500 | ReadTaggedId(); |
| 501 | return; |
| 502 | } |
| 503 | } else { |
| 504 | // Compact encoding is never used for comments, |
| 505 | // so it must be a position. |
| 506 | ASSERT(locatable_tag == kNonstatementPositionTag || |
| 507 | locatable_tag == kStatementPositionTag); |
| 508 | if (mode_mask_ & RelocInfo::kPositionMask) { |
| 509 | ReadTaggedPosition(); |
| 510 | if (SetMode(GetPositionModeFromTag(locatable_tag))) return; |
| 511 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 512 | } |
| 513 | } else { |
| 514 | ASSERT(tag == kDefaultTag); |
| 515 | int extra_tag = GetExtraTag(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 516 | if (extra_tag == kPCJumpExtraTag) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 517 | int top_tag = GetTopTag(); |
| 518 | if (top_tag == kVariableLengthPCJumpTopTag) { |
| 519 | AdvanceReadVariableLengthPCJump(); |
| 520 | } else { |
| 521 | AdvanceReadPC(); |
| 522 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 523 | } else if (extra_tag == kDataJumpExtraTag) { |
| 524 | int locatable_tag = GetTopTag(); |
| 525 | if (locatable_tag == kCodeWithIdTag) { |
| 526 | if (SetMode(RelocInfo::CODE_TARGET_WITH_ID)) { |
| 527 | AdvanceReadId(); |
| 528 | return; |
| 529 | } |
| 530 | Advance(kIntSize); |
| 531 | } else if (locatable_tag != kCommentTag) { |
| 532 | ASSERT(locatable_tag == kNonstatementPositionTag || |
| 533 | locatable_tag == kStatementPositionTag); |
| 534 | if (mode_mask_ & RelocInfo::kPositionMask) { |
| 535 | AdvanceReadPosition(); |
| 536 | if (SetMode(GetPositionModeFromTag(locatable_tag))) return; |
| 537 | } else { |
| 538 | Advance(kIntSize); |
| 539 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 540 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 541 | ASSERT(locatable_tag == kCommentTag); |
| 542 | if (SetMode(RelocInfo::COMMENT)) { |
| 543 | AdvanceReadData(); |
| 544 | return; |
| 545 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 546 | Advance(kIntptrSize); |
| 547 | } |
| 548 | } else { |
| 549 | AdvanceReadPC(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 550 | int rmode = extra_tag + RelocInfo::LAST_COMPACT_ENUM; |
| 551 | if (SetMode(static_cast<RelocInfo::Mode>(rmode))) return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 552 | } |
| 553 | } |
| 554 | } |
| 555 | done_ = true; |
| 556 | } |
| 557 | |
| 558 | |
| 559 | RelocIterator::RelocIterator(Code* code, int mode_mask) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 560 | rinfo_.host_ = code; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 561 | rinfo_.pc_ = code->instruction_start(); |
| 562 | rinfo_.data_ = 0; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 563 | // Relocation info is read backwards. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 564 | pos_ = code->relocation_start() + code->relocation_size(); |
| 565 | end_ = code->relocation_start(); |
| 566 | done_ = false; |
| 567 | mode_mask_ = mode_mask; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 568 | last_id_ = 0; |
| 569 | last_position_ = 0; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 570 | if (mode_mask_ == 0) pos_ = end_; |
| 571 | next(); |
| 572 | } |
| 573 | |
| 574 | |
| 575 | RelocIterator::RelocIterator(const CodeDesc& desc, int mode_mask) { |
| 576 | rinfo_.pc_ = desc.buffer; |
| 577 | rinfo_.data_ = 0; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 578 | // Relocation info is read backwards. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 579 | pos_ = desc.buffer + desc.buffer_size; |
| 580 | end_ = pos_ - desc.reloc_size; |
| 581 | done_ = false; |
| 582 | mode_mask_ = mode_mask; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 583 | last_id_ = 0; |
| 584 | last_position_ = 0; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 585 | if (mode_mask_ == 0) pos_ = end_; |
| 586 | next(); |
| 587 | } |
| 588 | |
| 589 | |
| 590 | // ----------------------------------------------------------------------------- |
| 591 | // Implementation of RelocInfo |
| 592 | |
| 593 | |
| 594 | #ifdef ENABLE_DISASSEMBLER |
| 595 | const char* RelocInfo::RelocModeName(RelocInfo::Mode rmode) { |
| 596 | switch (rmode) { |
| 597 | case RelocInfo::NONE: |
| 598 | return "no reloc"; |
| 599 | case RelocInfo::EMBEDDED_OBJECT: |
| 600 | return "embedded object"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 601 | case RelocInfo::CONSTRUCT_CALL: |
| 602 | return "code target (js construct call)"; |
| 603 | case RelocInfo::CODE_TARGET_CONTEXT: |
| 604 | return "code target (context)"; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 605 | case RelocInfo::DEBUG_BREAK: |
| 606 | #ifndef ENABLE_DEBUGGER_SUPPORT |
| 607 | UNREACHABLE(); |
| 608 | #endif |
| 609 | return "debug break"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 610 | case RelocInfo::CODE_TARGET: |
| 611 | return "code target"; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 612 | case RelocInfo::CODE_TARGET_WITH_ID: |
| 613 | return "code target with id"; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 614 | case RelocInfo::GLOBAL_PROPERTY_CELL: |
| 615 | return "global property cell"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 616 | case RelocInfo::RUNTIME_ENTRY: |
| 617 | return "runtime entry"; |
| 618 | case RelocInfo::JS_RETURN: |
| 619 | return "js return"; |
| 620 | case RelocInfo::COMMENT: |
| 621 | return "comment"; |
| 622 | case RelocInfo::POSITION: |
| 623 | return "position"; |
| 624 | case RelocInfo::STATEMENT_POSITION: |
| 625 | return "statement position"; |
| 626 | case RelocInfo::EXTERNAL_REFERENCE: |
| 627 | return "external reference"; |
| 628 | case RelocInfo::INTERNAL_REFERENCE: |
| 629 | return "internal reference"; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 630 | case RelocInfo::DEBUG_BREAK_SLOT: |
| 631 | #ifndef ENABLE_DEBUGGER_SUPPORT |
| 632 | UNREACHABLE(); |
| 633 | #endif |
| 634 | return "debug break slot"; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 635 | case RelocInfo::NUMBER_OF_MODES: |
| 636 | UNREACHABLE(); |
| 637 | return "number_of_modes"; |
| 638 | } |
| 639 | return "unknown relocation type"; |
| 640 | } |
| 641 | |
| 642 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 643 | void RelocInfo::Print(FILE* out) { |
| 644 | PrintF(out, "%p %s", pc_, RelocModeName(rmode_)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 645 | if (IsComment(rmode_)) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 646 | PrintF(out, " (%s)", reinterpret_cast<char*>(data_)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 647 | } else if (rmode_ == EMBEDDED_OBJECT) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 648 | PrintF(out, " ("); |
| 649 | target_object()->ShortPrint(out); |
| 650 | PrintF(out, ")"); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 651 | } else if (rmode_ == EXTERNAL_REFERENCE) { |
| 652 | ExternalReferenceEncoder ref_encoder; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 653 | PrintF(out, " (%s) (%p)", |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 654 | ref_encoder.NameOfAddress(*target_reference_address()), |
| 655 | *target_reference_address()); |
| 656 | } else if (IsCodeTarget(rmode_)) { |
| 657 | Code* code = Code::GetCodeFromTargetAddress(target_address()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 658 | PrintF(out, " (%s) (%p)", Code::Kind2String(code->kind()), |
| 659 | target_address()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 660 | if (rmode_ == CODE_TARGET_WITH_ID) { |
| 661 | PrintF(" (id=%d)", static_cast<int>(data_)); |
| 662 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 663 | } else if (IsPosition(rmode_)) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 664 | PrintF(out, " (%" V8_PTR_PREFIX "d)", data()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 665 | } else if (rmode_ == RelocInfo::RUNTIME_ENTRY && |
| 666 | Isolate::Current()->deoptimizer_data() != NULL) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 667 | // Depotimization bailouts are stored as runtime entries. |
| 668 | int id = Deoptimizer::GetDeoptimizationId( |
| 669 | target_address(), Deoptimizer::EAGER); |
| 670 | if (id != Deoptimizer::kNotDeoptimizationEntry) { |
| 671 | PrintF(out, " (deoptimization bailout %d)", id); |
| 672 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 673 | } |
| 674 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 675 | PrintF(out, "\n"); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 676 | } |
| 677 | #endif // ENABLE_DISASSEMBLER |
| 678 | |
| 679 | |
| 680 | #ifdef DEBUG |
| 681 | void RelocInfo::Verify() { |
| 682 | switch (rmode_) { |
| 683 | case EMBEDDED_OBJECT: |
| 684 | Object::VerifyPointer(target_object()); |
| 685 | break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 686 | case GLOBAL_PROPERTY_CELL: |
| 687 | Object::VerifyPointer(target_cell()); |
| 688 | break; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 689 | case DEBUG_BREAK: |
| 690 | #ifndef ENABLE_DEBUGGER_SUPPORT |
| 691 | UNREACHABLE(); |
| 692 | break; |
| 693 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 694 | case CONSTRUCT_CALL: |
| 695 | case CODE_TARGET_CONTEXT: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 696 | case CODE_TARGET_WITH_ID: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 697 | case CODE_TARGET: { |
| 698 | // convert inline target address to code object |
| 699 | Address addr = target_address(); |
| 700 | ASSERT(addr != NULL); |
| 701 | // Check that we can find the right code object. |
| 702 | Code* code = Code::GetCodeFromTargetAddress(addr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 703 | Object* found = HEAP->FindCodeObject(addr); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 704 | ASSERT(found->IsCode()); |
| 705 | ASSERT(code->address() == HeapObject::cast(found)->address()); |
| 706 | break; |
| 707 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 708 | case RUNTIME_ENTRY: |
| 709 | case JS_RETURN: |
| 710 | case COMMENT: |
| 711 | case POSITION: |
| 712 | case STATEMENT_POSITION: |
| 713 | case EXTERNAL_REFERENCE: |
| 714 | case INTERNAL_REFERENCE: |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 715 | case DEBUG_BREAK_SLOT: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 716 | case NONE: |
| 717 | break; |
| 718 | case NUMBER_OF_MODES: |
| 719 | UNREACHABLE(); |
| 720 | break; |
| 721 | } |
| 722 | } |
| 723 | #endif // DEBUG |
| 724 | |
| 725 | |
| 726 | // ----------------------------------------------------------------------------- |
| 727 | // Implementation of ExternalReference |
| 728 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 729 | ExternalReference::ExternalReference(Builtins::CFunctionId id, Isolate* isolate) |
| 730 | : address_(Redirect(isolate, Builtins::c_function_address(id))) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 731 | |
| 732 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 733 | ExternalReference::ExternalReference( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 734 | ApiFunction* fun, |
| 735 | Type type = ExternalReference::BUILTIN_CALL, |
| 736 | Isolate* isolate = NULL) |
| 737 | : address_(Redirect(isolate, fun->address(), type)) {} |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 738 | |
| 739 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 740 | ExternalReference::ExternalReference(Builtins::Name name, Isolate* isolate) |
| 741 | : address_(isolate->builtins()->builtin_address(name)) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 742 | |
| 743 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 744 | ExternalReference::ExternalReference(Runtime::FunctionId id, |
| 745 | Isolate* isolate) |
| 746 | : address_(Redirect(isolate, Runtime::FunctionForId(id)->entry)) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 747 | |
| 748 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 749 | ExternalReference::ExternalReference(const Runtime::Function* f, |
| 750 | Isolate* isolate) |
| 751 | : address_(Redirect(isolate, f->entry)) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 752 | |
| 753 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 754 | ExternalReference ExternalReference::isolate_address() { |
| 755 | return ExternalReference(Isolate::Current()); |
| 756 | } |
| 757 | |
| 758 | |
| 759 | ExternalReference::ExternalReference(const IC_Utility& ic_utility, |
| 760 | Isolate* isolate) |
| 761 | : address_(Redirect(isolate, ic_utility.address())) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 762 | |
| 763 | #ifdef ENABLE_DEBUGGER_SUPPORT |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 764 | ExternalReference::ExternalReference(const Debug_Address& debug_address, |
| 765 | Isolate* isolate) |
| 766 | : address_(debug_address.address(isolate)) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 767 | #endif |
| 768 | |
| 769 | ExternalReference::ExternalReference(StatsCounter* counter) |
| 770 | : address_(reinterpret_cast<Address>(counter->GetInternalPointer())) {} |
| 771 | |
| 772 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 773 | ExternalReference::ExternalReference(Isolate::AddressId id, Isolate* isolate) |
| 774 | : address_(isolate->get_address_from_id(id)) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 775 | |
| 776 | |
| 777 | ExternalReference::ExternalReference(const SCTableReference& table_ref) |
| 778 | : address_(table_ref.address()) {} |
| 779 | |
| 780 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 781 | ExternalReference ExternalReference:: |
| 782 | incremental_marking_record_write_function(Isolate* isolate) { |
| 783 | return ExternalReference(Redirect( |
| 784 | isolate, |
| 785 | FUNCTION_ADDR(IncrementalMarking::RecordWriteFromCode))); |
| 786 | } |
| 787 | |
| 788 | |
| 789 | ExternalReference ExternalReference:: |
| 790 | incremental_evacuation_record_write_function(Isolate* isolate) { |
| 791 | return ExternalReference(Redirect( |
| 792 | isolate, |
| 793 | FUNCTION_ADDR(IncrementalMarking::RecordWriteForEvacuationFromCode))); |
| 794 | } |
| 795 | |
| 796 | |
| 797 | ExternalReference ExternalReference:: |
| 798 | store_buffer_overflow_function(Isolate* isolate) { |
| 799 | return ExternalReference(Redirect( |
| 800 | isolate, |
| 801 | FUNCTION_ADDR(StoreBuffer::StoreBufferOverflow))); |
| 802 | } |
| 803 | |
| 804 | |
| 805 | ExternalReference ExternalReference::flush_icache_function(Isolate* isolate) { |
| 806 | return ExternalReference(Redirect(isolate, FUNCTION_ADDR(CPU::FlushICache))); |
| 807 | } |
| 808 | |
| 809 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 810 | ExternalReference ExternalReference::perform_gc_function(Isolate* isolate) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 811 | return |
| 812 | ExternalReference(Redirect(isolate, FUNCTION_ADDR(Runtime::PerformGC))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 813 | } |
| 814 | |
| 815 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 816 | ExternalReference ExternalReference::fill_heap_number_with_random_function( |
| 817 | Isolate* isolate) { |
| 818 | return ExternalReference(Redirect( |
| 819 | isolate, |
| 820 | FUNCTION_ADDR(V8::FillHeapNumberWithRandom))); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 824 | ExternalReference ExternalReference::delete_handle_scope_extensions( |
| 825 | Isolate* isolate) { |
| 826 | return ExternalReference(Redirect( |
| 827 | isolate, |
| 828 | FUNCTION_ADDR(HandleScope::DeleteExtensions))); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 832 | ExternalReference ExternalReference::random_uint32_function( |
| 833 | Isolate* isolate) { |
| 834 | return ExternalReference(Redirect(isolate, FUNCTION_ADDR(V8::Random))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 835 | } |
| 836 | |
| 837 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 838 | ExternalReference ExternalReference::get_date_field_function( |
| 839 | Isolate* isolate) { |
| 840 | return ExternalReference(Redirect(isolate, FUNCTION_ADDR(JSDate::GetField))); |
| 841 | } |
| 842 | |
| 843 | |
| 844 | ExternalReference ExternalReference::date_cache_stamp(Isolate* isolate) { |
| 845 | return ExternalReference(isolate->date_cache()->stamp_address()); |
| 846 | } |
| 847 | |
| 848 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 849 | ExternalReference ExternalReference::transcendental_cache_array_address( |
| 850 | Isolate* isolate) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 851 | return ExternalReference( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 852 | isolate->transcendental_cache()->cache_array_address()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 856 | ExternalReference ExternalReference::new_deoptimizer_function( |
| 857 | Isolate* isolate) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 858 | return ExternalReference( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 859 | Redirect(isolate, FUNCTION_ADDR(Deoptimizer::New))); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 860 | } |
| 861 | |
| 862 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 863 | ExternalReference ExternalReference::compute_output_frames_function( |
| 864 | Isolate* isolate) { |
| 865 | return ExternalReference( |
| 866 | Redirect(isolate, FUNCTION_ADDR(Deoptimizer::ComputeOutputFrames))); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 867 | } |
| 868 | |
| 869 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 870 | ExternalReference ExternalReference::keyed_lookup_cache_keys(Isolate* isolate) { |
| 871 | return ExternalReference(isolate->keyed_lookup_cache()->keys_address()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 872 | } |
| 873 | |
| 874 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 875 | ExternalReference ExternalReference::keyed_lookup_cache_field_offsets( |
| 876 | Isolate* isolate) { |
| 877 | return ExternalReference( |
| 878 | isolate->keyed_lookup_cache()->field_offsets_address()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 879 | } |
| 880 | |
| 881 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 882 | ExternalReference ExternalReference::roots_array_start(Isolate* isolate) { |
| 883 | return ExternalReference(isolate->heap()->roots_array_start()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 887 | ExternalReference ExternalReference::address_of_stack_limit(Isolate* isolate) { |
| 888 | return ExternalReference(isolate->stack_guard()->address_of_jslimit()); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 889 | } |
| 890 | |
| 891 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 892 | ExternalReference ExternalReference::address_of_real_stack_limit( |
| 893 | Isolate* isolate) { |
| 894 | return ExternalReference(isolate->stack_guard()->address_of_real_jslimit()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 898 | ExternalReference ExternalReference::address_of_regexp_stack_limit( |
| 899 | Isolate* isolate) { |
| 900 | return ExternalReference(isolate->regexp_stack()->limit_address()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 901 | } |
| 902 | |
| 903 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 904 | ExternalReference ExternalReference::new_space_start(Isolate* isolate) { |
| 905 | return ExternalReference(isolate->heap()->NewSpaceStart()); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 909 | ExternalReference ExternalReference::store_buffer_top(Isolate* isolate) { |
| 910 | return ExternalReference(isolate->heap()->store_buffer()->TopAddress()); |
| 911 | } |
| 912 | |
| 913 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 914 | ExternalReference ExternalReference::new_space_mask(Isolate* isolate) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 915 | return ExternalReference(reinterpret_cast<Address>( |
| 916 | isolate->heap()->NewSpaceMask())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 920 | ExternalReference ExternalReference::new_space_allocation_top_address( |
| 921 | Isolate* isolate) { |
| 922 | return ExternalReference(isolate->heap()->NewSpaceAllocationTopAddress()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 923 | } |
| 924 | |
| 925 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 926 | ExternalReference ExternalReference::heap_always_allocate_scope_depth( |
| 927 | Isolate* isolate) { |
| 928 | Heap* heap = isolate->heap(); |
| 929 | return ExternalReference(heap->always_allocate_scope_depth_address()); |
| 930 | } |
| 931 | |
| 932 | |
| 933 | ExternalReference ExternalReference::new_space_allocation_limit_address( |
| 934 | Isolate* isolate) { |
| 935 | return ExternalReference(isolate->heap()->NewSpaceAllocationLimitAddress()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 936 | } |
| 937 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 938 | |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 939 | ExternalReference ExternalReference::handle_scope_level_address() { |
| 940 | return ExternalReference(HandleScope::current_level_address()); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | |
| 944 | ExternalReference ExternalReference::handle_scope_next_address() { |
| 945 | return ExternalReference(HandleScope::current_next_address()); |
| 946 | } |
| 947 | |
| 948 | |
| 949 | ExternalReference ExternalReference::handle_scope_limit_address() { |
| 950 | return ExternalReference(HandleScope::current_limit_address()); |
| 951 | } |
| 952 | |
| 953 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 954 | ExternalReference ExternalReference::scheduled_exception_address( |
| 955 | Isolate* isolate) { |
| 956 | return ExternalReference(isolate->scheduled_exception_address()); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 957 | } |
| 958 | |
| 959 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 960 | ExternalReference ExternalReference::address_of_min_int() { |
| 961 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 962 | &double_constants.Pointer()->min_int)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 963 | } |
| 964 | |
| 965 | |
| 966 | ExternalReference ExternalReference::address_of_one_half() { |
| 967 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 968 | &double_constants.Pointer()->one_half)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 969 | } |
| 970 | |
| 971 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 972 | ExternalReference ExternalReference::address_of_minus_zero() { |
| 973 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 974 | &double_constants.Pointer()->minus_zero)); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 975 | } |
| 976 | |
| 977 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 978 | ExternalReference ExternalReference::address_of_zero() { |
| 979 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 980 | &double_constants.Pointer()->zero)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | |
| 984 | ExternalReference ExternalReference::address_of_uint8_max_value() { |
| 985 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 986 | &double_constants.Pointer()->uint8_max_value)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 987 | } |
| 988 | |
| 989 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 990 | ExternalReference ExternalReference::address_of_negative_infinity() { |
| 991 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 992 | &double_constants.Pointer()->negative_infinity)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 993 | } |
| 994 | |
| 995 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 996 | ExternalReference ExternalReference::address_of_canonical_non_hole_nan() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 997 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 998 | &double_constants.Pointer()->canonical_non_hole_nan)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 999 | } |
| 1000 | |
| 1001 | |
| 1002 | ExternalReference ExternalReference::address_of_the_hole_nan() { |
| 1003 | return ExternalReference(reinterpret_cast<void*>( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1004 | &double_constants.Pointer()->the_hole_nan)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1005 | } |
| 1006 | |
| 1007 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1008 | #ifndef V8_INTERPRETED_REGEXP |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1009 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1010 | ExternalReference ExternalReference::re_check_stack_guard_state( |
| 1011 | Isolate* isolate) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1012 | Address function; |
| 1013 | #ifdef V8_TARGET_ARCH_X64 |
| 1014 | function = FUNCTION_ADDR(RegExpMacroAssemblerX64::CheckStackGuardState); |
| 1015 | #elif V8_TARGET_ARCH_IA32 |
| 1016 | function = FUNCTION_ADDR(RegExpMacroAssemblerIA32::CheckStackGuardState); |
| 1017 | #elif V8_TARGET_ARCH_ARM |
| 1018 | function = FUNCTION_ADDR(RegExpMacroAssemblerARM::CheckStackGuardState); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1019 | #elif V8_TARGET_ARCH_MIPS |
| 1020 | function = FUNCTION_ADDR(RegExpMacroAssemblerMIPS::CheckStackGuardState); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1021 | #else |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 1022 | UNREACHABLE(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1023 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1024 | return ExternalReference(Redirect(isolate, function)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1025 | } |
| 1026 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1027 | ExternalReference ExternalReference::re_grow_stack(Isolate* isolate) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1028 | return ExternalReference( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1029 | Redirect(isolate, FUNCTION_ADDR(NativeRegExpMacroAssembler::GrowStack))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1030 | } |
| 1031 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1032 | ExternalReference ExternalReference::re_case_insensitive_compare_uc16( |
| 1033 | Isolate* isolate) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1034 | return ExternalReference(Redirect( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1035 | isolate, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1036 | FUNCTION_ADDR(NativeRegExpMacroAssembler::CaseInsensitiveCompareUC16))); |
| 1037 | } |
| 1038 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1039 | ExternalReference ExternalReference::re_word_character_map() { |
| 1040 | return ExternalReference( |
| 1041 | NativeRegExpMacroAssembler::word_character_map_address()); |
| 1042 | } |
| 1043 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1044 | ExternalReference ExternalReference::address_of_static_offsets_vector( |
| 1045 | Isolate* isolate) { |
| 1046 | return ExternalReference( |
| 1047 | OffsetsVector::static_offsets_vector_address(isolate)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1048 | } |
| 1049 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1050 | ExternalReference ExternalReference::address_of_regexp_stack_memory_address( |
| 1051 | Isolate* isolate) { |
| 1052 | return ExternalReference( |
| 1053 | isolate->regexp_stack()->memory_address()); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1056 | ExternalReference ExternalReference::address_of_regexp_stack_memory_size( |
| 1057 | Isolate* isolate) { |
| 1058 | return ExternalReference(isolate->regexp_stack()->memory_size_address()); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1059 | } |
| 1060 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1061 | #endif // V8_INTERPRETED_REGEXP |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1062 | |
| 1063 | |
| 1064 | static double add_two_doubles(double x, double y) { |
| 1065 | return x + y; |
| 1066 | } |
| 1067 | |
| 1068 | |
| 1069 | static double sub_two_doubles(double x, double y) { |
| 1070 | return x - y; |
| 1071 | } |
| 1072 | |
| 1073 | |
| 1074 | static double mul_two_doubles(double x, double y) { |
| 1075 | return x * y; |
| 1076 | } |
| 1077 | |
| 1078 | |
| 1079 | static double div_two_doubles(double x, double y) { |
| 1080 | return x / y; |
| 1081 | } |
| 1082 | |
| 1083 | |
| 1084 | static double mod_two_doubles(double x, double y) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1085 | return modulo(x, y); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1089 | static double math_sin_double(double x) { |
| 1090 | return sin(x); |
| 1091 | } |
| 1092 | |
| 1093 | |
| 1094 | static double math_cos_double(double x) { |
| 1095 | return cos(x); |
| 1096 | } |
| 1097 | |
| 1098 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1099 | static double math_tan_double(double x) { |
| 1100 | return tan(x); |
| 1101 | } |
| 1102 | |
| 1103 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1104 | static double math_log_double(double x) { |
| 1105 | return log(x); |
| 1106 | } |
| 1107 | |
| 1108 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1109 | ExternalReference ExternalReference::math_sin_double_function( |
| 1110 | Isolate* isolate) { |
| 1111 | return ExternalReference(Redirect(isolate, |
| 1112 | FUNCTION_ADDR(math_sin_double), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1113 | BUILTIN_FP_CALL)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1114 | } |
| 1115 | |
| 1116 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1117 | ExternalReference ExternalReference::math_cos_double_function( |
| 1118 | Isolate* isolate) { |
| 1119 | return ExternalReference(Redirect(isolate, |
| 1120 | FUNCTION_ADDR(math_cos_double), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1121 | BUILTIN_FP_CALL)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1125 | ExternalReference ExternalReference::math_tan_double_function( |
| 1126 | Isolate* isolate) { |
| 1127 | return ExternalReference(Redirect(isolate, |
| 1128 | FUNCTION_ADDR(math_tan_double), |
| 1129 | BUILTIN_FP_CALL)); |
| 1130 | } |
| 1131 | |
| 1132 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1133 | ExternalReference ExternalReference::math_log_double_function( |
| 1134 | Isolate* isolate) { |
| 1135 | return ExternalReference(Redirect(isolate, |
| 1136 | FUNCTION_ADDR(math_log_double), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1137 | BUILTIN_FP_CALL)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1138 | } |
| 1139 | |
| 1140 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1141 | // Helper function to compute x^y, where y is known to be an |
| 1142 | // integer. Uses binary decomposition to limit the number of |
| 1143 | // multiplications; see the discussion in "Hacker's Delight" by Henry |
| 1144 | // S. Warren, Jr., figure 11-6, page 213. |
| 1145 | double power_double_int(double x, int y) { |
| 1146 | double m = (y < 0) ? 1 / x : x; |
| 1147 | unsigned n = (y < 0) ? -y : y; |
| 1148 | double p = 1; |
| 1149 | while (n != 0) { |
| 1150 | if ((n & 1) != 0) p *= m; |
| 1151 | m *= m; |
| 1152 | if ((n & 2) != 0) p *= m; |
| 1153 | m *= m; |
| 1154 | n >>= 2; |
| 1155 | } |
| 1156 | return p; |
| 1157 | } |
| 1158 | |
| 1159 | |
| 1160 | double power_double_double(double x, double y) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1161 | // The checks for special cases can be dropped in ia32 because it has already |
| 1162 | // been done in generated code before bailing out here. |
| 1163 | if (isnan(y) || ((x == 1 || x == -1) && isinf(y))) return OS::nan_value(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1164 | return pow(x, y); |
| 1165 | } |
| 1166 | |
| 1167 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1168 | ExternalReference ExternalReference::power_double_double_function( |
| 1169 | Isolate* isolate) { |
| 1170 | return ExternalReference(Redirect(isolate, |
| 1171 | FUNCTION_ADDR(power_double_double), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1172 | BUILTIN_FP_FP_CALL)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1173 | } |
| 1174 | |
| 1175 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1176 | ExternalReference ExternalReference::power_double_int_function( |
| 1177 | Isolate* isolate) { |
| 1178 | return ExternalReference(Redirect(isolate, |
| 1179 | FUNCTION_ADDR(power_double_int), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1180 | BUILTIN_FP_INT_CALL)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1181 | } |
| 1182 | |
| 1183 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1184 | static int native_compare_doubles(double y, double x) { |
| 1185 | if (x == y) return EQUAL; |
| 1186 | return x < y ? LESS : GREATER; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1190 | bool EvalComparison(Token::Value op, double op1, double op2) { |
| 1191 | ASSERT(Token::IsCompareOp(op)); |
| 1192 | switch (op) { |
| 1193 | case Token::EQ: |
| 1194 | case Token::EQ_STRICT: return (op1 == op2); |
| 1195 | case Token::NE: return (op1 != op2); |
| 1196 | case Token::LT: return (op1 < op2); |
| 1197 | case Token::GT: return (op1 > op2); |
| 1198 | case Token::LTE: return (op1 <= op2); |
| 1199 | case Token::GTE: return (op1 >= op2); |
| 1200 | default: |
| 1201 | UNREACHABLE(); |
| 1202 | return false; |
| 1203 | } |
| 1204 | } |
| 1205 | |
| 1206 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1207 | ExternalReference ExternalReference::double_fp_operation( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1208 | Token::Value operation, Isolate* isolate) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1209 | typedef double BinaryFPOperation(double x, double y); |
| 1210 | BinaryFPOperation* function = NULL; |
| 1211 | switch (operation) { |
| 1212 | case Token::ADD: |
| 1213 | function = &add_two_doubles; |
| 1214 | break; |
| 1215 | case Token::SUB: |
| 1216 | function = &sub_two_doubles; |
| 1217 | break; |
| 1218 | case Token::MUL: |
| 1219 | function = &mul_two_doubles; |
| 1220 | break; |
| 1221 | case Token::DIV: |
| 1222 | function = &div_two_doubles; |
| 1223 | break; |
| 1224 | case Token::MOD: |
| 1225 | function = &mod_two_doubles; |
| 1226 | break; |
| 1227 | default: |
| 1228 | UNREACHABLE(); |
| 1229 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1230 | return ExternalReference(Redirect(isolate, |
| 1231 | FUNCTION_ADDR(function), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1232 | BUILTIN_FP_FP_CALL)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1236 | ExternalReference ExternalReference::compare_doubles(Isolate* isolate) { |
| 1237 | return ExternalReference(Redirect(isolate, |
| 1238 | FUNCTION_ADDR(native_compare_doubles), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1239 | BUILTIN_COMPARE_CALL)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1243 | #ifdef ENABLE_DEBUGGER_SUPPORT |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1244 | ExternalReference ExternalReference::debug_break(Isolate* isolate) { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1245 | return ExternalReference(Redirect(isolate, FUNCTION_ADDR(Debug_Break))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1246 | } |
| 1247 | |
| 1248 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1249 | ExternalReference ExternalReference::debug_step_in_fp_address( |
| 1250 | Isolate* isolate) { |
| 1251 | return ExternalReference(isolate->debug()->step_in_fp_addr()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1252 | } |
| 1253 | #endif |
| 1254 | |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1255 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1256 | void PositionsRecorder::RecordPosition(int pos) { |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1257 | ASSERT(pos != RelocInfo::kNoPosition); |
| 1258 | ASSERT(pos >= 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1259 | state_.current_position = pos; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1260 | #ifdef ENABLE_GDB_JIT_INTERFACE |
| 1261 | if (gdbjit_lineinfo_ != NULL) { |
| 1262 | gdbjit_lineinfo_->SetPosition(assembler_->pc_offset(), pos, false); |
| 1263 | } |
| 1264 | #endif |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1265 | } |
| 1266 | |
| 1267 | |
| 1268 | void PositionsRecorder::RecordStatementPosition(int pos) { |
| 1269 | ASSERT(pos != RelocInfo::kNoPosition); |
| 1270 | ASSERT(pos >= 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1271 | state_.current_statement_position = pos; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1272 | #ifdef ENABLE_GDB_JIT_INTERFACE |
| 1273 | if (gdbjit_lineinfo_ != NULL) { |
| 1274 | gdbjit_lineinfo_->SetPosition(assembler_->pc_offset(), pos, true); |
| 1275 | } |
| 1276 | #endif |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | |
| 1280 | bool PositionsRecorder::WriteRecordedPositions() { |
| 1281 | bool written = false; |
| 1282 | |
| 1283 | // Write the statement position if it is different from what was written last |
| 1284 | // time. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1285 | if (state_.current_statement_position != state_.written_statement_position) { |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1286 | EnsureSpace ensure_space(assembler_); |
| 1287 | assembler_->RecordRelocInfo(RelocInfo::STATEMENT_POSITION, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1288 | state_.current_statement_position); |
| 1289 | state_.written_statement_position = state_.current_statement_position; |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1290 | written = true; |
| 1291 | } |
| 1292 | |
| 1293 | // Write the position if it is different from what was written last time and |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1294 | // also different from the written statement position. |
| 1295 | if (state_.current_position != state_.written_position && |
| 1296 | state_.current_position != state_.written_statement_position) { |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1297 | EnsureSpace ensure_space(assembler_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1298 | assembler_->RecordRelocInfo(RelocInfo::POSITION, state_.current_position); |
| 1299 | state_.written_position = state_.current_position; |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1300 | written = true; |
| 1301 | } |
| 1302 | |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 1303 | // Return whether something was written. |
| 1304 | return written; |
| 1305 | } |
| 1306 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1307 | } } // namespace v8::internal |