namespace v8 { namespace internal {
+
+static const int BYTECODE_MASK = 0xff;
+static const unsigned int MAX_FIRST_ARG = 0xffffffu;
+static const int BYTECODE_SHIFT = 8;
+
#define BYTECODE_ITERATOR(V) \
-V(BREAK, 0, 1) /* break */ \
-V(PUSH_CP, 1, 5) /* push_cp offset32 */ \
-V(PUSH_BT, 2, 5) /* push_bt addr32 */ \
-V(PUSH_REGISTER, 3, 2) /* push_register register_index */ \
-V(SET_REGISTER_TO_CP, 4, 6) /* set_register_to_cp register_index offset32 */ \
-V(SET_CP_TO_REGISTER, 5, 2) /* set_cp_to_registger register_index */ \
-V(SET_REGISTER_TO_SP, 6, 2) /* set_register_to_sp register_index */ \
-V(SET_SP_TO_REGISTER, 7, 2) /* set_sp_to_registger register_index */ \
-V(SET_REGISTER, 8, 6) /* set_register register_index value32 */ \
-V(ADVANCE_REGISTER, 9, 6) /* advance_register register_index value32 */ \
-V(POP_CP, 10, 1) /* pop_cp */ \
-V(POP_BT, 11, 1) /* pop_bt */ \
-V(POP_REGISTER, 12, 2) /* pop_register register_index */ \
-V(FAIL, 13, 1) /* fail */ \
-V(SUCCEED, 14, 1) /* succeed */ \
-V(ADVANCE_CP, 15, 5) /* advance_cp offset32 */ \
-V(GOTO, 16, 5) /* goto addr32 */ \
-V(LOAD_CURRENT_CHAR, 17, 9) /* load offset32 addr32 */ \
-V(LOAD_CURRENT_CHAR_UNCHECKED, 18, 5) /* load offset32 */ \
-V(LOAD_2_CURRENT_CHARS, 19, 9) /* load offset32 addr32 */ \
-V(LOAD_2_CURRENT_CHARS_UNCHECKED, 20, 5) /* load offset32 */ \
-V(LOAD_4_CURRENT_CHARS, 21, 9) /* load offset32 addr32 */ \
-V(LOAD_4_CURRENT_CHARS_UNCHECKED, 22, 5) /* load offset32 */ \
-V(CHECK_CHAR, 23, 9) /* check_char uint32 addr32 */ \
-V(CHECK_NOT_CHAR, 24, 9) /* check_not_char uint32 addr32 */ \
-V(AND_CHECK_CHAR, 25, 13) /* and_check_char uint32 uint32 addr32 */ \
-V(AND_CHECK_NOT_CHAR, 26, 13) /* and_check_not_char uint32 uint32 addr32 */ \
-V(MINUS_AND_CHECK_NOT_CHAR, 27, 11) /* minus_and_check_not_char uc16 uc16...*/ \
-V(CHECK_LT, 28, 7) /* check_lt uc16 addr32 */ \
-V(CHECK_GT, 29, 7) /* check_gr uc16 addr32 */ \
-V(CHECK_NOT_BACK_REF, 30, 6) /* check_not_back_ref capture_idx addr32 */ \
-V(CHECK_NOT_BACK_REF_NO_CASE, 31, 6) /* check_not_back_ref_no_case captu... */ \
-V(CHECK_NOT_REGS_EQUAL, 32, 7) /* check_not_regs_equal reg1 reg2 addr32 */ \
-V(LOOKUP_MAP1, 33, 11) /* l_map1 start16 bit_map_addr32 addr32 */ \
-V(LOOKUP_MAP2, 34, 99) /* l_map2 start16 half_nibble_map_addr32* */ \
-V(LOOKUP_MAP8, 35, 99) /* l_map8 start16 byte_map addr32* */ \
-V(LOOKUP_HI_MAP8, 36, 99) /* l_himap8 start8 byte_map_addr32 addr32* */ \
-V(CHECK_REGISTER_LT, 37, 8) /* check_reg_lt register_index value16 addr32 */ \
-V(CHECK_REGISTER_GE, 38, 8) /* check_reg_ge register_index value16 addr32 */ \
-V(CHECK_REGISTER_EQ_POS, 39, 6) /* check_register_eq_pos index addr32 */ \
-V(CHECK_AT_START, 40, 5) /* check_at_start addr32 */ \
-V(CHECK_NOT_AT_START, 41, 5) /* check_not_at_start addr32 */ \
-V(CHECK_GREEDY, 42, 5) /* check_greedy addr32 */
+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 */ \
+V(GOTO, 16, 8) /* bc8 pad24 addr32 */ \
+V(LOAD_CURRENT_CHAR, 17, 8) /* bc8 offset24 addr32 */ \
+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 */ \
+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 */ \
+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 addr32 */ \
+V(CHECK_LT, 32, 8) /* bc8 pad8 uc16 addr32 */ \
+V(CHECK_GT, 33, 8) /* bc8 pad8 uc16 addr32 */ \
+V(CHECK_NOT_BACK_REF, 34, 8) /* bc8 reg_idx24 addr32 */ \
+V(CHECK_NOT_BACK_REF_NO_CASE, 35, 8) /* bc8 reg_idx24 addr32 */ \
+V(CHECK_NOT_REGS_EQUAL, 36, 12) /* bc8 regidx24 reg_idx32 addr32 */ \
+V(LOOKUP_MAP1, 37, 12) /* bc8 pad8 start16 bit_map_addr32 addr32 */ \
+V(LOOKUP_MAP2, 38, 96) /* bc8 pad8 start16 half_nibble_map_addr32* */ \
+V(LOOKUP_MAP8, 39, 96) /* bc8 pad8 start16 byte_map addr32* */ \
+V(LOOKUP_HI_MAP8, 40, 96) /* bc8 start24 byte_map_addr32 addr32* */ \
+V(CHECK_REGISTER_LT, 41, 12) /* bc8 reg_idx24 value32 addr32 */ \
+V(CHECK_REGISTER_GE, 42, 12) /* bc8 reg_idx24 value32 addr32 */ \
+V(CHECK_REGISTER_EQ_POS, 43, 8) /* bc8 reg_idx24 addr32 */ \
+V(CHECK_AT_START, 44, 8) /* bc8 pad24 addr32 */ \
+V(CHECK_NOT_AT_START, 45, 8) /* bc8 pad24 addr32 */ \
+V(CHECK_GREEDY, 46, 8) /* bc8 pad24 addr32 */
#define DECLARE_BYTECODES(name, code, length) \
static const int BC_##name = code;
current_char,
printable ? current_char : '.',
bytecode_name);
- for (int i = 1; i < bytecode_length; i++) {
+ for (int i = 0; i < bytecode_length; i++) {
printf(", %02x", pc[i]);
}
printf(" ");
#endif
+static int32_t Load32Aligned(const byte* pc) {
+ ASSERT((reinterpret_cast<int>(pc) & 3) == 0);
+ return *reinterpret_cast<const int32_t *>(pc);
+}
+
+
+static int32_t Load16Aligned(const byte* pc) {
+ ASSERT((reinterpret_cast<int>(pc) & 1) == 0);
+ return *reinterpret_cast<const uint16_t *>(pc);
+}
+
template <typename Char>
static bool RawMatch(const byte* code_base,
}
#endif
while (true) {
- switch (*pc) {
+ int32_t insn = Load32Aligned(pc);
+ switch (insn & BYTECODE_MASK) {
BYTECODE(BREAK)
UNREACHABLE();
return false;
if (--backtrack_stack_space < 0) {
return false; // No match on backtrack stack overflow.
}
- *backtrack_sp++ = current + Load32(pc + 1);
+ *backtrack_sp++ = current;
pc += BC_PUSH_CP_LENGTH;
break;
BYTECODE(PUSH_BT)
if (--backtrack_stack_space < 0) {
return false; // No match on backtrack stack overflow.
}
- *backtrack_sp++ = Load32(pc + 1);
+ *backtrack_sp++ = Load32Aligned(pc + 4);
pc += BC_PUSH_BT_LENGTH;
break;
BYTECODE(PUSH_REGISTER)
if (--backtrack_stack_space < 0) {
return false; // No match on backtrack stack overflow.
}
- *backtrack_sp++ = registers[pc[1]];
+ *backtrack_sp++ = registers[insn >> BYTECODE_SHIFT];
pc += BC_PUSH_REGISTER_LENGTH;
break;
BYTECODE(SET_REGISTER)
- registers[pc[1]] = Load32(pc + 2);
+ registers[insn >> BYTECODE_SHIFT] = Load32Aligned(pc + 4);
pc += BC_SET_REGISTER_LENGTH;
break;
BYTECODE(ADVANCE_REGISTER)
- registers[pc[1]] += Load32(pc + 2);
+ registers[insn >> BYTECODE_SHIFT] += Load32Aligned(pc + 4);
pc += BC_ADVANCE_REGISTER_LENGTH;
break;
BYTECODE(SET_REGISTER_TO_CP)
- registers[pc[1]] = current + Load32(pc + 2);
+ registers[insn >> BYTECODE_SHIFT] = current + Load32Aligned(pc + 4);
pc += BC_SET_REGISTER_TO_CP_LENGTH;
break;
BYTECODE(SET_CP_TO_REGISTER)
- current = registers[pc[1]];
+ current = registers[insn >> BYTECODE_SHIFT];
pc += BC_SET_CP_TO_REGISTER_LENGTH;
break;
BYTECODE(SET_REGISTER_TO_SP)
- registers[pc[1]] = backtrack_sp - backtrack_stack;
+ registers[insn >> BYTECODE_SHIFT] = backtrack_sp - backtrack_stack;
pc += BC_SET_REGISTER_TO_SP_LENGTH;
break;
BYTECODE(SET_SP_TO_REGISTER)
- backtrack_sp = backtrack_stack + registers[pc[1]];
+ backtrack_sp = backtrack_stack + registers[insn >> BYTECODE_SHIFT];
backtrack_stack_space = kBacktrackStackSize -
(backtrack_sp - backtrack_stack);
pc += BC_SET_SP_TO_REGISTER_LENGTH;
BYTECODE(POP_REGISTER)
backtrack_stack_space++;
--backtrack_sp;
- registers[pc[1]] = *backtrack_sp;
+ registers[insn >> BYTECODE_SHIFT] = *backtrack_sp;
pc += BC_POP_REGISTER_LENGTH;
break;
BYTECODE(FAIL)
BYTECODE(SUCCEED)
return true;
BYTECODE(ADVANCE_CP)
- current += Load32(pc + 1);
+ current += insn >> BYTECODE_SHIFT;
pc += BC_ADVANCE_CP_LENGTH;
break;
BYTECODE(GOTO)
- pc = code_base + Load32(pc + 1);
+ pc = code_base + Load32Aligned(pc + 4);
break;
BYTECODE(CHECK_GREEDY)
if (current == backtrack_sp[-1]) {
backtrack_sp--;
backtrack_stack_space++;
- pc = code_base + Load32(pc + 1);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_GREEDY_LENGTH;
}
break;
BYTECODE(LOAD_CURRENT_CHAR) {
- int pos = current + Load32(pc + 1);
+ int pos = current + (insn >> BYTECODE_SHIFT);
if (pos >= subject.length()) {
- pc = code_base + Load32(pc + 5);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
current_char = subject[pos];
pc += BC_LOAD_CURRENT_CHAR_LENGTH;
break;
}
BYTECODE(LOAD_CURRENT_CHAR_UNCHECKED) {
- int pos = current + Load32(pc + 1);
+ int pos = current + (insn >> BYTECODE_SHIFT);
current_char = subject[pos];
pc += BC_LOAD_CURRENT_CHAR_UNCHECKED_LENGTH;
break;
}
BYTECODE(LOAD_2_CURRENT_CHARS) {
- int pos = current + Load32(pc + 1);
+ int pos = current + (insn >> BYTECODE_SHIFT);
if (pos + 2 > subject.length()) {
- pc = code_base + Load32(pc + 5);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
Char next = subject[pos + 1];
current_char =
break;
}
BYTECODE(LOAD_2_CURRENT_CHARS_UNCHECKED) {
- int pos = current + Load32(pc + 1);
+ int pos = current + (insn >> BYTECODE_SHIFT);
Char next = subject[pos + 1];
current_char = (subject[pos] | (next << (kBitsPerByte * sizeof(Char))));
pc += BC_LOAD_2_CURRENT_CHARS_UNCHECKED_LENGTH;
}
BYTECODE(LOAD_4_CURRENT_CHARS) {
ASSERT(sizeof(Char) == 1);
- int pos = current + Load32(pc + 1);
+ int pos = current + (insn >> BYTECODE_SHIFT);
if (pos + 4 > subject.length()) {
- pc = code_base + Load32(pc + 5);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
Char next1 = subject[pos + 1];
Char next2 = subject[pos + 2];
}
BYTECODE(LOAD_4_CURRENT_CHARS_UNCHECKED) {
ASSERT(sizeof(Char) == 1);
- int pos = current + Load32(pc + 1);
+ int pos = current + (insn >> BYTECODE_SHIFT);
Char next1 = subject[pos + 1];
Char next2 = subject[pos + 2];
Char next3 = subject[pos + 3];
pc += BC_LOAD_4_CURRENT_CHARS_UNCHECKED_LENGTH;
break;
}
+ BYTECODE(CHECK_4_CHARS) {
+ uint32_t c = Load32Aligned(pc + 4);
+ if (c == current_char) {
+ pc = code_base + Load32Aligned(pc + 8);
+ } else {
+ pc += BC_CHECK_4_CHARS_LENGTH;
+ }
+ break;
+ }
BYTECODE(CHECK_CHAR) {
- uint32_t c = Load32(pc + 1);
+ uint32_t c = (insn >> BYTECODE_SHIFT);
if (c == current_char) {
- pc = code_base + Load32(pc + 5);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_CHAR_LENGTH;
}
break;
}
+ BYTECODE(CHECK_NOT_4_CHARS) {
+ uint32_t c = Load32Aligned(pc + 4);
+ if (c != current_char) {
+ pc = code_base + Load32Aligned(pc + 8);
+ } else {
+ pc += BC_CHECK_NOT_4_CHARS_LENGTH;
+ }
+ break;
+ }
BYTECODE(CHECK_NOT_CHAR) {
- uint32_t c = Load32(pc + 1);
+ uint32_t c = (insn >> BYTECODE_SHIFT);
if (c != current_char) {
- pc = code_base + Load32(pc + 5);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_NOT_CHAR_LENGTH;
}
break;
}
+ BYTECODE(AND_CHECK_4_CHARS) {
+ uint32_t c = Load32Aligned(pc + 4);
+ if (c == (current_char & Load32Aligned(pc + 8))) {
+ pc = code_base + Load32Aligned(pc + 12);
+ } else {
+ pc += BC_AND_CHECK_4_CHARS_LENGTH;
+ }
+ break;
+ }
BYTECODE(AND_CHECK_CHAR) {
- uint32_t c = Load32(pc + 1);
- if (c == (current_char & Load32(pc + 5))) {
- pc = code_base + Load32(pc + 9);
+ uint32_t c = (insn >> BYTECODE_SHIFT);
+ if (c == (current_char & Load32Aligned(pc + 4))) {
+ pc = code_base + Load32Aligned(pc + 8);
} else {
pc += BC_AND_CHECK_CHAR_LENGTH;
}
break;
}
+ BYTECODE(AND_CHECK_NOT_4_CHARS) {
+ uint32_t c = Load32Aligned(pc + 4);
+ if (c != (current_char & Load32Aligned(pc + 8))) {
+ pc = code_base + Load32Aligned(pc + 12);
+ } else {
+ pc += BC_AND_CHECK_NOT_4_CHARS_LENGTH;
+ }
+ break;
+ }
BYTECODE(AND_CHECK_NOT_CHAR) {
- uint32_t c = Load32(pc + 1);
- if (c != (current_char & Load32(pc + 5))) {
- pc = code_base + Load32(pc + 9);
+ uint32_t c = (insn >> BYTECODE_SHIFT);
+ if (c != (current_char & Load32Aligned(pc + 4))) {
+ pc = code_base + Load32Aligned(pc + 8);
} else {
pc += BC_AND_CHECK_NOT_CHAR_LENGTH;
}
break;
}
BYTECODE(MINUS_AND_CHECK_NOT_CHAR) {
- uint32_t c = Load16(pc + 1);
- uint32_t minus = Load16(pc + 3);
- uint32_t mask = Load16(pc + 5);
+ uint32_t c = (insn >> BYTECODE_SHIFT);
+ uint32_t minus = Load16Aligned(pc + 4);
+ uint32_t mask = Load16Aligned(pc + 6);
if (c != ((current_char - minus) & mask)) {
- pc = code_base + Load32(pc + 7);
+ pc = code_base + Load32Aligned(pc + 8);
} else {
pc += BC_MINUS_AND_CHECK_NOT_CHAR_LENGTH;
}
break;
}
BYTECODE(CHECK_LT) {
- uint32_t limit = Load16(pc + 1);
+ uint32_t limit = (insn >> BYTECODE_SHIFT);
if (current_char < limit) {
- pc = code_base + Load32(pc + 3);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_LT_LENGTH;
}
break;
}
BYTECODE(CHECK_GT) {
- uint32_t limit = Load16(pc + 1);
+ uint32_t limit = (insn >> BYTECODE_SHIFT);
if (current_char > limit) {
- pc = code_base + Load32(pc + 3);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_GT_LENGTH;
}
break;
}
BYTECODE(CHECK_REGISTER_LT)
- if (registers[pc[1]] < Load16(pc + 2)) {
- pc = code_base + Load32(pc + 4);
+ if (registers[insn >> BYTECODE_SHIFT] < Load32Aligned(pc + 4)) {
+ pc = code_base + Load32Aligned(pc + 8);
} else {
pc += BC_CHECK_REGISTER_LT_LENGTH;
}
break;
BYTECODE(CHECK_REGISTER_GE)
- if (registers[pc[1]] >= Load16(pc + 2)) {
- pc = code_base + Load32(pc + 4);
+ if (registers[insn >> BYTECODE_SHIFT] >= Load32Aligned(pc + 4)) {
+ pc = code_base + Load32Aligned(pc + 8);
} else {
pc += BC_CHECK_REGISTER_GE_LENGTH;
}
break;
BYTECODE(CHECK_REGISTER_EQ_POS)
- if (registers[pc[1]] == current) {
- pc = code_base + Load32(pc + 2);
+ if (registers[insn >> BYTECODE_SHIFT] == current) {
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_REGISTER_EQ_POS_LENGTH;
}
break;
BYTECODE(LOOKUP_MAP1) {
// Look up character in a bitmap. If we find a 0, then jump to the
- // location at pc + 7. Otherwise fall through!
- int index = current_char - Load16(pc + 1);
- byte map = code_base[Load32(pc + 3) + (index >> 3)];
+ // location at pc + 8. Otherwise fall through!
+ int index = current_char - (insn >> BYTECODE_SHIFT);
+ byte map = code_base[Load32Aligned(pc + 4) + (index >> 3)];
map = ((map >> (index & 7)) & 1);
if (map == 0) {
- pc = code_base + Load32(pc + 7);
+ pc = code_base + Load32Aligned(pc + 8);
} else {
pc += BC_LOOKUP_MAP1_LENGTH;
}
}
BYTECODE(LOOKUP_MAP2) {
// Look up character in a half-nibble map. If we find 00, then jump to
- // the location at pc + 7. If we find 01 then jump to location at
+ // the location at pc + 8. If we find 01 then jump to location at
// pc + 11, etc.
- int index = (current_char - Load16(pc + 1)) << 1;
- byte map = code_base[Load32(pc + 3) + (index >> 3)];
+ int index = (current_char - (insn >> BYTECODE_SHIFT)) << 1;
+ byte map = code_base[Load32Aligned(pc + 3) + (index >> 3)];
map = ((map >> (index & 7)) & 3);
if (map < 2) {
if (map == 0) {
- pc = code_base + Load32(pc + 7);
+ pc = code_base + Load32Aligned(pc + 8);
} else {
- pc = code_base + Load32(pc + 11);
+ pc = code_base + Load32Aligned(pc + 12);
}
} else {
if (map == 2) {
- pc = code_base + Load32(pc + 15);
+ pc = code_base + Load32Aligned(pc + 16);
} else {
- pc = code_base + Load32(pc + 19);
+ pc = code_base + Load32Aligned(pc + 20);
}
}
break;
BYTECODE(LOOKUP_MAP8) {
// Look up character in a byte map. Use the byte as an index into a
// table that follows this instruction immediately.
- int index = current_char - Load16(pc + 1);
- byte map = code_base[Load32(pc + 3) + index];
- const byte* new_pc = code_base + Load32(pc + 7) + (map << 2);
- pc = code_base + Load32(new_pc);
+ int index = current_char - (insn >> BYTECODE_SHIFT);
+ byte map = code_base[Load32Aligned(pc + 4) + index];
+ const byte* new_pc = code_base + Load32Aligned(pc + 8) + (map << 2);
+ pc = code_base + Load32Aligned(new_pc);
break;
}
BYTECODE(LOOKUP_HI_MAP8) {
// Look up high byte of this character in a byte map. Use the byte as
// an index into a table that follows this instruction immediately.
- int index = (current_char >> 8) - pc[1];
- byte map = code_base[Load32(pc + 2) + index];
- const byte* new_pc = code_base + Load32(pc + 6) + (map << 2);
- pc = code_base + Load32(new_pc);
+ int index = (current_char >> 8) - (insn >> BYTECODE_SHIFT);
+ byte map = code_base[Load32Aligned(pc + 4) + index];
+ const byte* new_pc = code_base + Load32Aligned(pc + 8) + (map << 2);
+ pc = code_base + Load32Aligned(new_pc);
break;
}
BYTECODE(CHECK_NOT_REGS_EQUAL)
- if (registers[pc[1]] == registers[pc[2]]) {
+ if (registers[insn >> BYTECODE_SHIFT] == registers[Load32Aligned(pc + 4)]) {
pc += BC_CHECK_NOT_REGS_EQUAL_LENGTH;
} else {
- pc = code_base + Load32(pc + 3);
+ pc = code_base + Load32Aligned(pc + 8);
}
break;
BYTECODE(CHECK_NOT_BACK_REF) {
- int from = registers[pc[1]];
- int len = registers[pc[1] + 1] - from;
+ int from = registers[insn >> BYTECODE_SHIFT];
+ int len = registers[(insn >> BYTECODE_SHIFT) + 1] - from;
if (from < 0 || len <= 0) {
pc += BC_CHECK_NOT_BACK_REF_LENGTH;
break;
}
if (current + len > subject.length()) {
- pc = code_base + Load32(pc + 2);
+ pc = code_base + Load32Aligned(pc + 4);
break;
} else {
int i;
for (i = 0; i < len; i++) {
if (subject[from + i] != subject[current + i]) {
- pc = code_base + Load32(pc + 2);
+ pc = code_base + Load32Aligned(pc + 4);
break;
}
}
break;
}
BYTECODE(CHECK_NOT_BACK_REF_NO_CASE) {
- int from = registers[pc[1]];
- int len = registers[pc[1] + 1] - from;
+ int from = registers[insn >> BYTECODE_SHIFT];
+ int len = registers[(insn >> BYTECODE_SHIFT) + 1] - from;
if (from < 0 || len <= 0) {
pc += BC_CHECK_NOT_BACK_REF_NO_CASE_LENGTH;
break;
}
if (current + len > subject.length()) {
- pc = code_base + Load32(pc + 2);
+ pc = code_base + Load32Aligned(pc + 4);
break;
} else {
if (BackRefMatchesNoCase(from, current, len, subject)) {
current += len;
pc += BC_CHECK_NOT_BACK_REF_NO_CASE_LENGTH;
} else {
- pc = code_base + Load32(pc + 2);
+ pc = code_base + Load32Aligned(pc + 4);
}
}
break;
}
BYTECODE(CHECK_AT_START)
if (current == 0) {
- pc = code_base + Load32(pc + 1);
+ pc = code_base + Load32Aligned(pc + 4);
} else {
pc += BC_CHECK_AT_START_LENGTH;
}
if (current == 0) {
pc += BC_CHECK_NOT_AT_START_LENGTH;
} else {
- pc = code_base + Load32(pc + 1);
+ pc = code_base + Load32Aligned(pc + 4);
}
break;
default:
namespace v8 { namespace internal {
-void RegExpMacroAssemblerIrregexp::Emit(uint32_t byte) {
+void RegExpMacroAssemblerIrregexp::Emit(uint32_t byte, uint32_t twenty_four_bits) {
+ uint32_t word = ((twenty_four_bits << BYTECODE_SHIFT) | byte);
ASSERT(pc_ <= buffer_.length());
- if (pc_ == buffer_.length()) {
+ if (pc_ + 3 >= buffer_.length()) {
Expand();
}
- buffer_[pc_++] = byte;
+ Store32(buffer_.start() + pc_, word);
+ pc_ += 4;
}
void RegExpMacroAssemblerIrregexp::PopRegister(int register_index) {
- Emit(BC_POP_REGISTER);
- Emit(register_index);
+ Emit(BC_POP_REGISTER, register_index);
}
int register_index,
StackCheckFlag check_stack_limit) {
ASSERT(register_index >= 0);
- Emit(BC_PUSH_REGISTER);
- Emit(register_index);
+ Emit(BC_PUSH_REGISTER, register_index);
}
void RegExpMacroAssemblerIrregexp::WriteCurrentPositionToRegister(
int register_index, int cp_offset) {
ASSERT(register_index >= 0);
- Emit(BC_SET_REGISTER_TO_CP);
- Emit(register_index);
+ Emit(BC_SET_REGISTER_TO_CP, register_index);
Emit32(cp_offset); // Current position offset.
}
void RegExpMacroAssemblerIrregexp::ReadCurrentPositionFromRegister(
int register_index) {
ASSERT(register_index >= 0);
- Emit(BC_SET_CP_TO_REGISTER);
- Emit(register_index);
+ Emit(BC_SET_CP_TO_REGISTER, register_index);
}
void RegExpMacroAssemblerIrregexp::WriteStackPointerToRegister(
int register_index) {
ASSERT(register_index >= 0);
- Emit(BC_SET_REGISTER_TO_SP);
- Emit(register_index);
+ Emit(BC_SET_REGISTER_TO_SP, register_index);
}
void RegExpMacroAssemblerIrregexp::ReadStackPointerFromRegister(
int register_index) {
ASSERT(register_index >= 0);
- Emit(BC_SET_SP_TO_REGISTER);
- Emit(register_index);
+ Emit(BC_SET_SP_TO_REGISTER, register_index);
}
void RegExpMacroAssemblerIrregexp::SetRegister(int register_index, int to) {
ASSERT(register_index >= 0);
- Emit(BC_SET_REGISTER);
- Emit(register_index);
+ Emit(BC_SET_REGISTER, register_index);
Emit32(to);
}
void RegExpMacroAssemblerIrregexp::AdvanceRegister(int register_index, int by) {
ASSERT(register_index >= 0);
- Emit(BC_ADVANCE_REGISTER);
- Emit(register_index);
+ Emit(BC_ADVANCE_REGISTER, register_index);
Emit32(by);
}
void RegExpMacroAssemblerIrregexp::PopCurrentPosition() {
- Emit(BC_POP_CP);
+ Emit(BC_POP_CP, 0);
}
void RegExpMacroAssemblerIrregexp::PushCurrentPosition() {
- Emit(BC_PUSH_CP);
- Emit32(0); // Current position offset.
+ Emit(BC_PUSH_CP, 0);
}
void RegExpMacroAssemblerIrregexp::Backtrack() {
- Emit(BC_POP_BT);
+ Emit(BC_POP_BT, 0);
}
void RegExpMacroAssemblerIrregexp::GoTo(Label* l) {
- Emit(BC_GOTO);
+ Emit(BC_GOTO, 0);
EmitOrLink(l);
}
void RegExpMacroAssemblerIrregexp::PushBacktrack(Label* l) {
- Emit(BC_PUSH_BT);
+ Emit(BC_PUSH_BT, 0);
EmitOrLink(l);
}
void RegExpMacroAssemblerIrregexp::Succeed() {
- Emit(BC_SUCCEED);
+ Emit(BC_SUCCEED, 0);
}
void RegExpMacroAssemblerIrregexp::Fail() {
- Emit(BC_FAIL);
+ Emit(BC_FAIL, 0);
}
void RegExpMacroAssemblerIrregexp::AdvanceCurrentPosition(int by) {
- Emit(BC_ADVANCE_CP);
- Emit32(by);
+ Emit(BC_ADVANCE_CP, by);
}
void RegExpMacroAssemblerIrregexp::CheckGreedyLoop(
Label* on_tos_equals_current_position) {
- Emit(BC_CHECK_GREEDY);
+ Emit(BC_CHECK_GREEDY, 0);
EmitOrLink(on_tos_equals_current_position);
}
bytecode = BC_LOAD_CURRENT_CHAR_UNCHECKED;
}
}
- Emit(bytecode);
- Emit32(cp_offset);
+ Emit(bytecode, cp_offset);
if (check_bounds) EmitOrLink(on_failure);
}
void RegExpMacroAssemblerIrregexp::CheckCharacterLT(uc16 limit,
Label* on_less) {
- Emit(BC_CHECK_LT);
- Emit16(limit);
+ Emit(BC_CHECK_LT, limit);
EmitOrLink(on_less);
}
void RegExpMacroAssemblerIrregexp::CheckCharacterGT(uc16 limit,
Label* on_greater) {
- Emit(BC_CHECK_GT);
- Emit16(limit);
+ Emit(BC_CHECK_GT, limit);
EmitOrLink(on_greater);
}
void RegExpMacroAssemblerIrregexp::CheckCharacter(uint32_t c, Label* on_equal) {
- Emit(BC_CHECK_CHAR);
- Emit32(c);
+ if (c > MAX_FIRST_ARG) {
+ Emit(BC_CHECK_4_CHARS, 0);
+ Emit32(c);
+ } else {
+ Emit(BC_CHECK_CHAR, c);
+ }
EmitOrLink(on_equal);
}
void RegExpMacroAssemblerIrregexp::CheckAtStart(Label* on_at_start) {
- Emit(BC_CHECK_AT_START);
+ Emit(BC_CHECK_AT_START, 0);
EmitOrLink(on_at_start);
}
void RegExpMacroAssemblerIrregexp::CheckNotAtStart(Label* on_not_at_start) {
- Emit(BC_CHECK_NOT_AT_START);
+ Emit(BC_CHECK_NOT_AT_START, 0);
EmitOrLink(on_not_at_start);
}
void RegExpMacroAssemblerIrregexp::CheckNotCharacter(uint32_t c,
Label* on_not_equal) {
- Emit(BC_CHECK_NOT_CHAR);
- Emit32(c);
+ if (c > MAX_FIRST_ARG) {
+ Emit(BC_CHECK_NOT_4_CHARS, 0);
+ Emit32(c);
+ } else {
+ Emit(BC_CHECK_NOT_CHAR, c);
+ }
EmitOrLink(on_not_equal);
}
uint32_t c,
uint32_t mask,
Label* on_equal) {
- Emit(BC_AND_CHECK_CHAR);
- Emit32(c);
+ if (c > MAX_FIRST_ARG) {
+ Emit(BC_AND_CHECK_4_CHARS, 0);
+ Emit32(c);
+ } else {
+ Emit(BC_AND_CHECK_CHAR, c);
+ }
Emit32(mask);
EmitOrLink(on_equal);
}
uint32_t c,
uint32_t mask,
Label* on_not_equal) {
- Emit(BC_AND_CHECK_NOT_CHAR);
- Emit32(c);
+ if (c > MAX_FIRST_ARG) {
+ Emit(BC_AND_CHECK_NOT_4_CHARS, 0);
+ Emit32(c);
+ } else {
+ Emit(BC_AND_CHECK_NOT_CHAR, c);
+ }
Emit32(mask);
EmitOrLink(on_not_equal);
}
uc16 minus,
uc16 mask,
Label* on_not_equal) {
- Emit(BC_MINUS_AND_CHECK_NOT_CHAR);
- Emit16(c);
+ Emit(BC_MINUS_AND_CHECK_NOT_CHAR, c);
Emit16(minus);
Emit16(mask);
EmitOrLink(on_not_equal);
void RegExpMacroAssemblerIrregexp::CheckNotBackReference(int start_reg,
Label* on_not_equal) {
- Emit(BC_CHECK_NOT_BACK_REF);
- Emit(start_reg);
+ Emit(BC_CHECK_NOT_BACK_REF, start_reg);
EmitOrLink(on_not_equal);
}
void RegExpMacroAssemblerIrregexp::CheckNotBackReferenceIgnoreCase(
int start_reg,
Label* on_not_equal) {
- Emit(BC_CHECK_NOT_BACK_REF_NO_CASE);
- Emit(start_reg);
+ Emit(BC_CHECK_NOT_BACK_REF_NO_CASE, start_reg);
EmitOrLink(on_not_equal);
}
void RegExpMacroAssemblerIrregexp::CheckNotRegistersEqual(int reg1,
int reg2,
Label* on_not_equal) {
- Emit(BC_CHECK_NOT_REGS_EQUAL);
- Emit(reg1);
- Emit(reg2);
+ Emit(BC_CHECK_NOT_REGS_EQUAL, reg1);
+ Emit32(reg2);
EmitOrLink(on_not_equal);
}
// load below.
for (int i = str.length() - 1; i >= 0; i--) {
if (check_end_of_string && i == str.length() - 1) {
- Emit(BC_LOAD_CURRENT_CHAR);
- Emit32(cp_offset + i);
+ Emit(BC_LOAD_CURRENT_CHAR, cp_offset + i);
EmitOrLink(on_failure);
} else {
- Emit(BC_LOAD_CURRENT_CHAR_UNCHECKED);
- Emit32(cp_offset + i);
+ Emit(BC_LOAD_CURRENT_CHAR_UNCHECKED, cp_offset + i);
}
- Emit(BC_CHECK_NOT_CHAR);
- Emit32(str[i]);
+ Emit(BC_CHECK_NOT_CHAR, str[i]);
EmitOrLink(on_failure);
}
}
int comparand,
Label* on_less_than) {
ASSERT(comparand >= 0 && comparand <= 65535);
- Emit(BC_CHECK_REGISTER_LT);
- Emit(register_index);
- Emit16(comparand);
+ Emit(BC_CHECK_REGISTER_LT, register_index);
+ Emit32(comparand);
EmitOrLink(on_less_than);
}
int comparand,
Label* on_greater_or_equal) {
ASSERT(comparand >= 0 && comparand <= 65535);
- Emit(BC_CHECK_REGISTER_GE);
- Emit(register_index);
- Emit16(comparand);
+ Emit(BC_CHECK_REGISTER_GE, register_index);
+ Emit32(comparand);
EmitOrLink(on_greater_or_equal);
}
void RegExpMacroAssemblerIrregexp::IfRegisterEqPos(int register_index,
Label* on_eq) {
- Emit(BC_CHECK_REGISTER_EQ_POS);
- Emit(register_index);
+ Emit(BC_CHECK_REGISTER_EQ_POS, register_index);
EmitOrLink(on_eq);
}
Handle<Object> RegExpMacroAssemblerIrregexp::GetCode(Handle<String> source) {
Bind(&backtrack_);
- Emit(BC_POP_BT);
+ Emit(BC_POP_BT, 0);
Handle<ByteArray> array = Factory::NewByteArray(length());
Copy(array->GetDataStartAddress());
return array;
// Code and bitmap emission.
inline void Emit32(uint32_t x);
inline void Emit16(uint32_t x);
- inline void Emit(uint32_t x);
+ inline void Emit(uint32_t bc, uint32_t arg);
// Bytecode buffer.
int length();
void Copy(Address a);
projects / platform / upstream / v8.git / commitdiff