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Diffstat (limited to 'js/src/new-regexp/regexp-bytecodes.h')
-rw-r--r-- | js/src/new-regexp/regexp-bytecodes.h | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/js/src/new-regexp/regexp-bytecodes.h b/js/src/new-regexp/regexp-bytecodes.h deleted file mode 100644 index e5ab7cf661..0000000000 --- a/js/src/new-regexp/regexp-bytecodes.h +++ /dev/null @@ -1,251 +0,0 @@ -// Copyright 2011 the V8 project authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#ifndef V8_REGEXP_REGEXP_BYTECODES_H_ -#define V8_REGEXP_REGEXP_BYTECODES_H_ - -#include "new-regexp/regexp-shim.h" - -namespace v8 { -namespace internal { - -// Maximum number of bytecodes that will be used (next power of 2 of actually -// defined bytecodes). -// All slots between the last actually defined bytecode and maximum id will be -// filled with BREAKs, indicating an invalid operation. This way using -// BYTECODE_MASK guarantees no OOB access to the dispatch table. -constexpr int kRegExpPaddedBytecodeCount = 1 << 6; -constexpr int BYTECODE_MASK = kRegExpPaddedBytecodeCount - 1; -// The first argument is packed in with the byte code in one word, but so it -// has 24 bits, but it can be positive and negative so only use 23 bits for -// positive values. -const unsigned int MAX_FIRST_ARG = 0x7fffffu; -const int BYTECODE_SHIFT = 8; -STATIC_ASSERT(1 << BYTECODE_SHIFT > BYTECODE_MASK); - -// TODO(pthier): Argument offsets of bytecodes should be easily accessible by -// name or at least by position. -#define BYTECODE_ITERATOR(V) \ - V(BREAK, 0, 4) /* bc8 */ \ - V(PUSH_CP, 1, 4) /* bc8 pad24 */ \ - V(PUSH_BT, 2, 8) /* bc8 pad24 offset32 */ \ - V(PUSH_REGISTER, 3, 4) /* bc8 reg_idx24 */ \ - V(SET_REGISTER_TO_CP, 4, 8) /* bc8 reg_idx24 offset32 */ \ - V(SET_CP_TO_REGISTER, 5, 4) /* bc8 reg_idx24 */ \ - V(SET_REGISTER_TO_SP, 6, 4) /* bc8 reg_idx24 */ \ - V(SET_SP_TO_REGISTER, 7, 4) /* bc8 reg_idx24 */ \ - V(SET_REGISTER, 8, 8) /* bc8 reg_idx24 value32 */ \ - V(ADVANCE_REGISTER, 9, 8) /* bc8 reg_idx24 value32 */ \ - V(POP_CP, 10, 4) /* bc8 pad24 */ \ - V(POP_BT, 11, 4) /* bc8 pad24 */ \ - V(POP_REGISTER, 12, 4) /* bc8 reg_idx24 */ \ - V(FAIL, 13, 4) /* bc8 pad24 */ \ - V(SUCCEED, 14, 4) /* bc8 pad24 */ \ - V(ADVANCE_CP, 15, 4) /* bc8 offset24 */ \ - /* Jump to another bytecode given its offset. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x10 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: 0x00 (unused) Padding */ \ - /* 0x20 - 0x3F: Address of bytecode to jump to */ \ - V(GOTO, 16, 8) /* bc8 pad24 addr32 */ \ - /* Check if offset is in range and load character at given offset. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x11 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: Offset from current position */ \ - /* 0x20 - 0x3F: Address of bytecode when load is out of range */ \ - V(LOAD_CURRENT_CHAR, 17, 8) /* bc8 offset24 addr32 */ \ - /* Load character at given offset without range checks. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x12 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: Offset from current position */ \ - V(LOAD_CURRENT_CHAR_UNCHECKED, 18, 4) /* bc8 offset24 */ \ - V(LOAD_2_CURRENT_CHARS, 19, 8) /* bc8 offset24 addr32 */ \ - V(LOAD_2_CURRENT_CHARS_UNCHECKED, 20, 4) /* bc8 offset24 */ \ - V(LOAD_4_CURRENT_CHARS, 21, 8) /* bc8 offset24 addr32 */ \ - V(LOAD_4_CURRENT_CHARS_UNCHECKED, 22, 4) /* bc8 offset24 */ \ - V(CHECK_4_CHARS, 23, 12) /* bc8 pad24 uint32 addr32 */ \ - /* Check if current character is equal to a given character */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x19 (fixed) Bytecode */ \ - /* 0x08 - 0x0F: 0x00 (unused) Padding */ \ - /* 0x10 - 0x1F: Character to check */ \ - /* 0x20 - 0x3F: Address of bytecode when matched */ \ - V(CHECK_CHAR, 24, 8) /* bc8 pad8 uint16 addr32 */ \ - V(CHECK_NOT_4_CHARS, 25, 12) /* bc8 pad24 uint32 addr32 */ \ - V(CHECK_NOT_CHAR, 26, 8) /* bc8 pad8 uint16 addr32 */ \ - V(AND_CHECK_4_CHARS, 27, 16) /* bc8 pad24 uint32 uint32 addr32 */ \ - /* Checks if the current character combined with mask (bitwise and) */ \ - /* matches a character (e.g. used when two characters in a disjunction */ \ - /* differ by only a single bit */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x1c (fixed) Bytecode */ \ - /* 0x08 - 0x0F: 0x00 (unused) Padding */ \ - /* 0x10 - 0x1F: Character to match against (after mask aplied) */ \ - /* 0x20 - 0x3F: Bitmask bitwise and combined with current character */ \ - /* 0x40 - 0x5F: Address of bytecode when matched */ \ - V(AND_CHECK_CHAR, 28, 12) /* bc8 pad8 uint16 uint32 addr32 */ \ - V(AND_CHECK_NOT_4_CHARS, 29, 16) /* bc8 pad24 uint32 uint32 addr32 */ \ - V(AND_CHECK_NOT_CHAR, 30, 12) /* bc8 pad8 uint16 uint32 addr32 */ \ - V(MINUS_AND_CHECK_NOT_CHAR, 31, 12) /* bc8 pad8 uc16 uc16 uc16 addr32 */ \ - V(CHECK_CHAR_IN_RANGE, 32, 12) /* bc8 pad24 uc16 uc16 addr32 */ \ - V(CHECK_CHAR_NOT_IN_RANGE, 33, 12) /* bc8 pad24 uc16 uc16 addr32 */ \ - /* Checks if the current character matches any of the characters encoded */ \ - /* in a bit table. Similar to/inspired by boyer moore string search */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x22 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: 0x00 (unused) Padding */ \ - /* 0x20 - 0x3F: Address of bytecode when bit is set */ \ - /* 0x40 - 0xBF: Bit table */ \ - V(CHECK_BIT_IN_TABLE, 34, 24) /* bc8 pad24 addr32 bits128 */ \ - V(CHECK_LT, 35, 8) /* bc8 pad8 uc16 addr32 */ \ - V(CHECK_GT, 36, 8) /* bc8 pad8 uc16 addr32 */ \ - V(CHECK_NOT_BACK_REF, 37, 8) /* bc8 reg_idx24 addr32 */ \ - V(CHECK_NOT_BACK_REF_NO_CASE, 38, 8) /* bc8 reg_idx24 addr32 */ \ - V(CHECK_NOT_BACK_REF_NO_CASE_UNICODE, 39, 8) /* UNUSED */ \ - V(CHECK_NOT_BACK_REF_BACKWARD, 40, 8) /* bc8 reg_idx24 addr32 */ \ - V(CHECK_NOT_BACK_REF_NO_CASE_BACKWARD, 41, 8) /* bc8 reg_idx24 addr32 */ \ - V(CHECK_NOT_BACK_REF_NO_CASE_UNICODE_BACKWARD, 42, 8) /* UNUSED */ \ - V(CHECK_NOT_REGS_EQUAL, 43, 12) /* bc8 regidx24 reg_idx32 addr32 */ \ - V(CHECK_REGISTER_LT, 44, 12) /* bc8 reg_idx24 value32 addr32 */ \ - V(CHECK_REGISTER_GE, 45, 12) /* bc8 reg_idx24 value32 addr32 */ \ - V(CHECK_REGISTER_EQ_POS, 46, 8) /* bc8 reg_idx24 addr32 */ \ - V(CHECK_AT_START, 47, 8) /* bc8 pad24 addr32 */ \ - V(CHECK_NOT_AT_START, 48, 8) /* bc8 offset24 addr32 */ \ - /* Checks if the current position matches top of backtrack stack */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x31 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: 0x00 (unused) Padding */ \ - /* 0x20 - 0x3F: Address of bytecode when current matches tos */ \ - V(CHECK_GREEDY, 49, 8) /* bc8 pad24 addr32 */ \ - /* Advance character pointer by given offset and jump to another bytecode.*/ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x32 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: Number of characters to advance */ \ - /* 0x20 - 0x3F: Address of bytecode to jump to */ \ - V(ADVANCE_CP_AND_GOTO, 50, 8) /* bc8 offset24 addr32 */ \ - V(SET_CURRENT_POSITION_FROM_END, 51, 4) /* bc8 idx24 */ \ - /* Checks if current position + given offset is in range. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07: 0x34 (fixed) Bytecode */ \ - /* 0x08 - 0x1F: Offset from current position */ \ - /* 0x20 - 0x3F: Address of bytecode when position is out of range */ \ - V(CHECK_CURRENT_POSITION, 52, 8) /* bc8 idx24 addr32 */ \ - /* Combination of: */ \ - /* LOAD_CURRENT_CHAR, CHECK_BIT_IN_TABLE and ADVANCE_CP_AND_GOTO */ \ - /* Emitted by RegExpBytecodePeepholeOptimization. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07 0x35 (fixed) Bytecode */ \ - /* 0x08 - 0x1F Load character offset from current position */ \ - /* 0x20 - 0x3F Number of characters to advance */ \ - /* 0x40 - 0xBF Bit Table */ \ - /* 0xC0 - 0xDF Address of bytecode when character is matched */ \ - /* 0xE0 - 0xFF Address of bytecode when no match */ \ - V(SKIP_UNTIL_BIT_IN_TABLE, 53, 32) \ - /* Combination of: */ \ - /* CHECK_CURRENT_POSITION, LOAD_CURRENT_CHAR_UNCHECKED, AND_CHECK_CHAR */ \ - /* and ADVANCE_CP_AND_GOTO */ \ - /* Emitted by RegExpBytecodePeepholeOptimization. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07 0x36 (fixed) Bytecode */ \ - /* 0x08 - 0x1F Load character offset from current position */ \ - /* 0x20 - 0x2F Number of characters to advance */ \ - /* 0x30 - 0x3F Character to match against (after mask applied) */ \ - /* 0x40 - 0x5F: Bitmask bitwise and combined with current character */ \ - /* 0x60 - 0x7F Minimum number of characters this pattern consumes */ \ - /* 0x80 - 0x9F Address of bytecode when character is matched */ \ - /* 0xA0 - 0xBF Address of bytecode when no match */ \ - V(SKIP_UNTIL_CHAR_AND, 54, 24) \ - /* Combination of: */ \ - /* LOAD_CURRENT_CHAR, CHECK_CHAR and ADVANCE_CP_AND_GOTO */ \ - /* Emitted by RegExpBytecodePeepholeOptimization. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07 0x37 (fixed) Bytecode */ \ - /* 0x08 - 0x1F Load character offset from current position */ \ - /* 0x20 - 0x2F Number of characters to advance */ \ - /* 0x30 - 0x3F Character to match */ \ - /* 0x40 - 0x5F Address of bytecode when character is matched */ \ - /* 0x60 - 0x7F Address of bytecode when no match */ \ - V(SKIP_UNTIL_CHAR, 55, 16) \ - /* Combination of: */ \ - /* CHECK_CURRENT_POSITION, LOAD_CURRENT_CHAR_UNCHECKED, CHECK_CHAR */ \ - /* and ADVANCE_CP_AND_GOTO */ \ - /* Emitted by RegExpBytecodePeepholeOptimization. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07 0x38 (fixed) Bytecode */ \ - /* 0x08 - 0x1F Load character offset from current position */ \ - /* 0x20 - 0x2F Number of characters to advance */ \ - /* 0x30 - 0x3F Character to match */ \ - /* 0x40 - 0x5F Minimum number of characters this pattern consumes */ \ - /* 0x60 - 0x7F Address of bytecode when character is matched */ \ - /* 0x80 - 0x9F Address of bytecode when no match */ \ - V(SKIP_UNTIL_CHAR_POS_CHECKED, 56, 20) \ - /* Combination of: */ \ - /* LOAD_CURRENT_CHAR, CHECK_CHAR, CHECK_CHAR and ADVANCE_CP_AND_GOTO */ \ - /* Emitted by RegExpBytecodePeepholeOptimization. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07 0x39 (fixed) Bytecode */ \ - /* 0x08 - 0x1F Load character offset from current position */ \ - /* 0x20 - 0x3F Number of characters to advance */ \ - /* 0x40 - 0x4F Character to match */ \ - /* 0x50 - 0x5F Other Character to match */ \ - /* 0x60 - 0x7F Address of bytecode when either character is matched */ \ - /* 0x80 - 0x9F Address of bytecode when no match */ \ - V(SKIP_UNTIL_CHAR_OR_CHAR, 57, 20) \ - /* Combination of: */ \ - /* LOAD_CURRENT_CHAR, CHECK_GT, CHECK_BIT_IN_TABLE, GOTO and */ \ - /* and ADVANCE_CP_AND_GOTO */ \ - /* Emitted by RegExpBytecodePeepholeOptimization. */ \ - /* Bit Layout: */ \ - /* 0x00 - 0x07 0x3A (fixed) Bytecode */ \ - /* 0x08 - 0x1F Load character offset from current position */ \ - /* 0x20 - 0x2F Number of characters to advance */ \ - /* 0x30 - 0x3F Character to check if it is less than current char */ \ - /* 0x40 - 0xBF Bit Table */ \ - /* 0xC0 - 0xDF Address of bytecode when character is matched */ \ - /* 0xE0 - 0xFF Address of bytecode when no match */ \ - V(SKIP_UNTIL_GT_OR_NOT_BIT_IN_TABLE, 58, 32) - -#define COUNT(...) +1 -static constexpr int kRegExpBytecodeCount = BYTECODE_ITERATOR(COUNT); -#undef COUNT - -// Just making sure we assigned values above properly. They should be -// contiguous, strictly increasing, and start at 0. -// TODO(jgruber): Do not explicitly assign values, instead generate them -// implicitly from the list order. -STATIC_ASSERT(kRegExpBytecodeCount == 59); - -#define DECLARE_BYTECODES(name, code, length) \ - static constexpr int BC_##name = code; -BYTECODE_ITERATOR(DECLARE_BYTECODES) -#undef DECLARE_BYTECODES - -static constexpr int kRegExpBytecodeLengths[] = { -#define DECLARE_BYTECODE_LENGTH(name, code, length) length, - BYTECODE_ITERATOR(DECLARE_BYTECODE_LENGTH) -#undef DECLARE_BYTECODE_LENGTH -}; - -inline constexpr int RegExpBytecodeLength(int bytecode) { - return kRegExpBytecodeLengths[bytecode]; -} - -static const char* const kRegExpBytecodeNames[] = { -#define DECLARE_BYTECODE_NAME(name, ...) #name, - BYTECODE_ITERATOR(DECLARE_BYTECODE_NAME) -#undef DECLARE_BYTECODE_NAME -}; - -inline const char* RegExpBytecodeName(int bytecode) { - return kRegExpBytecodeNames[bytecode]; -} - -void RegExpBytecodeDisassembleSingle(const byte* code_base, const byte* pc); -void RegExpBytecodeDisassemble(const byte* code_base, int length, - const char* pattern); - -} // namespace internal -} // namespace v8 - -#endif // V8_REGEXP_REGEXP_BYTECODES_H_ |