diff options
Diffstat (limited to 'src/3rdparty/pcre/pcre_jit_compile.c')
| -rw-r--r-- | src/3rdparty/pcre/pcre_jit_compile.c | 58 |
1 files changed, 48 insertions, 10 deletions
diff --git a/src/3rdparty/pcre/pcre_jit_compile.c b/src/3rdparty/pcre/pcre_jit_compile.c index debdf6ef45..868d1d91bf 100644 --- a/src/3rdparty/pcre/pcre_jit_compile.c +++ b/src/3rdparty/pcre/pcre_jit_compile.c @@ -1064,6 +1064,7 @@ pcre_uchar *alternative; pcre_uchar *end = NULL; int private_data_ptr = *private_data_start; int space, size, bracketlen; +BOOL repeat_check = TRUE; while (cc < ccend) { @@ -1071,9 +1072,10 @@ while (cc < ccend) size = 0; bracketlen = 0; if (private_data_ptr > SLJIT_MAX_LOCAL_SIZE) - return; + break; - if (*cc == OP_ONCE || *cc == OP_ONCE_NC || *cc == OP_BRA || *cc == OP_CBRA || *cc == OP_COND) + if (repeat_check && (*cc == OP_ONCE || *cc == OP_ONCE_NC || *cc == OP_BRA || *cc == OP_CBRA || *cc == OP_COND)) + { if (detect_repeat(common, cc)) { /* These brackets are converted to repeats, so no global @@ -1081,6 +1083,8 @@ while (cc < ccend) if (cc >= end) end = bracketend(cc); } + } + repeat_check = TRUE; switch(*cc) { @@ -1136,6 +1140,13 @@ while (cc < ccend) bracketlen = 1 + LINK_SIZE + IMM2_SIZE; break; + case OP_BRAZERO: + case OP_BRAMINZERO: + case OP_BRAPOSZERO: + repeat_check = FALSE; + size = 1; + break; + CASE_ITERATOR_PRIVATE_DATA_1 space = 1; size = -2; @@ -1162,12 +1173,17 @@ while (cc < ccend) size = 1; break; - CASE_ITERATOR_TYPE_PRIVATE_DATA_2B + case OP_TYPEUPTO: if (cc[1 + IMM2_SIZE] != OP_ANYNL && cc[1 + IMM2_SIZE] != OP_EXTUNI) space = 2; size = 1 + IMM2_SIZE; break; + case OP_TYPEMINUPTO: + space = 2; + size = 1 + IMM2_SIZE; + break; + case OP_CLASS: case OP_NCLASS: size += 1 + 32 / sizeof(pcre_uchar); @@ -1316,6 +1332,13 @@ while (cc < ccend) cc += 1 + LINK_SIZE + IMM2_SIZE; break; + case OP_THEN: + stack_restore = TRUE; + if (common->control_head_ptr != 0) + *needs_control_head = TRUE; + cc ++; + break; + default: stack_restore = TRUE; /* Fall through. */ @@ -2220,6 +2243,7 @@ while (current != NULL) SLJIT_ASSERT_STOP(); break; } + SLJIT_ASSERT(current > (sljit_sw*)current[-1]); current = (sljit_sw*)current[-1]; } return -1; @@ -3209,7 +3233,7 @@ bytes[len] = byte; bytes[0] = len; } -static int scan_prefix(compiler_common *common, pcre_uchar *cc, pcre_uint32 *chars, pcre_uint8 *bytes, int max_chars) +static int scan_prefix(compiler_common *common, pcre_uchar *cc, pcre_uint32 *chars, pcre_uint8 *bytes, int max_chars, pcre_uint32 *rec_count) { /* Recursive function, which scans prefix literals. */ BOOL last, any, caseless; @@ -3227,9 +3251,14 @@ pcre_uchar othercase[1]; repeat = 1; while (TRUE) { + if (*rec_count == 0) + return 0; + (*rec_count)--; + last = TRUE; any = FALSE; caseless = FALSE; + switch (*cc) { case OP_CHARI: @@ -3291,7 +3320,7 @@ while (TRUE) #ifdef SUPPORT_UTF if (common->utf && HAS_EXTRALEN(*cc)) len += GET_EXTRALEN(*cc); #endif - max_chars = scan_prefix(common, cc + len, chars, bytes, max_chars); + max_chars = scan_prefix(common, cc + len, chars, bytes, max_chars, rec_count); if (max_chars == 0) return consumed; last = FALSE; @@ -3314,7 +3343,7 @@ while (TRUE) alternative = cc + GET(cc, 1); while (*alternative == OP_ALT) { - max_chars = scan_prefix(common, alternative + 1 + LINK_SIZE, chars, bytes, max_chars); + max_chars = scan_prefix(common, alternative + 1 + LINK_SIZE, chars, bytes, max_chars, rec_count); if (max_chars == 0) return consumed; alternative += GET(alternative, 1); @@ -3556,6 +3585,7 @@ int i, max, from; int range_right = -1, range_len = 3 - 1; sljit_ub *update_table = NULL; BOOL in_range; +pcre_uint32 rec_count; for (i = 0; i < MAX_N_CHARS; i++) { @@ -3564,7 +3594,8 @@ for (i = 0; i < MAX_N_CHARS; i++) bytes[i * MAX_N_BYTES] = 0; } -max = scan_prefix(common, common->start, chars, bytes, MAX_N_CHARS); +rec_count = 10000; +max = scan_prefix(common, common->start, chars, bytes, MAX_N_CHARS, &rec_count); if (max <= 1) return FALSE; @@ -7665,6 +7696,10 @@ while (*cc != OP_KETRPOS) OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0); } + /* Even if the match is empty, we need to reset the control head. */ + if (needs_control_head) + OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(stack)); + if (opcode == OP_SBRAPOS || opcode == OP_SCBRAPOS) add_jump(compiler, &emptymatch, CMP(SLJIT_EQUAL, TMP1, 0, STR_PTR, 0)); @@ -7692,6 +7727,10 @@ while (*cc != OP_KETRPOS) OP1(SLJIT_MOV, SLJIT_MEM1(TMP2), (framesize + 1) * sizeof(sljit_sw), STR_PTR, 0); } + /* Even if the match is empty, we need to reset the control head. */ + if (needs_control_head) + OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(stack)); + if (opcode == OP_SBRAPOS || opcode == OP_SCBRAPOS) add_jump(compiler, &emptymatch, CMP(SLJIT_EQUAL, TMP1, 0, STR_PTR, 0)); @@ -7704,9 +7743,6 @@ while (*cc != OP_KETRPOS) } } - if (needs_control_head) - OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(stack)); - JUMPTO(SLJIT_JUMP, loop); flush_stubs(common); @@ -9648,6 +9684,7 @@ set_jumps(common->currententry->calls, common->currententry->entry); sljit_emit_fast_enter(compiler, TMP2, 0); allocate_stack(common, private_data_size + framesize + alternativesize); +count_match(common); OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(private_data_size + framesize + alternativesize - 1), TMP2, 0); copy_private_data(common, ccbegin, ccend, TRUE, private_data_size + framesize + alternativesize, framesize + alternativesize, needs_control_head); if (needs_control_head) @@ -9992,6 +10029,7 @@ OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, stack)); OP1(SLJIT_MOV_UI, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, limit_match)); OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(struct sljit_stack, base)); OP1(SLJIT_MOV, STACK_LIMIT, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(struct sljit_stack, limit)); +OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, 1); OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LIMIT_MATCH, TMP1, 0); if (mode == JIT_PARTIAL_SOFT_COMPILE) |