diff options
Diffstat (limited to 'thirdparty/pcre2/src/sljit/sljitNativeX86_32.c')
| -rw-r--r-- | thirdparty/pcre2/src/sljit/sljitNativeX86_32.c | 79 |
1 files changed, 51 insertions, 28 deletions
diff --git a/thirdparty/pcre2/src/sljit/sljitNativeX86_32.c b/thirdparty/pcre2/src/sljit/sljitNativeX86_32.c index 8a83e273a4..074e64b9f2 100644 --- a/thirdparty/pcre2/src/sljit/sljitNativeX86_32.c +++ b/thirdparty/pcre2/src/sljit/sljitNativeX86_32.c @@ -123,34 +123,38 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) if (args > 0) { - *inst++ = MOV_r_rm; - *inst++ = MOD_REG | (reg_map[SLJIT_S0] << 3) | reg_map[SLJIT_R2]; + inst[0] = MOV_r_rm; + inst[1] = MOD_REG | (reg_map[SLJIT_S0] << 3) | reg_map[SLJIT_R2]; + inst += 2; } if (args > 1) { - *inst++ = MOV_r_rm; - *inst++ = MOD_REG | (reg_map[SLJIT_S1] << 3) | reg_map[SLJIT_R1]; + inst[0] = MOV_r_rm; + inst[1] = MOD_REG | (reg_map[SLJIT_S1] << 3) | reg_map[SLJIT_R1]; + inst += 2; } if (args > 2) { - *inst++ = MOV_r_rm; - *inst++ = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | 0x4 /* esp */; - *inst++ = 0x24; - *inst++ = sizeof(sljit_sw) * (3 + 2); /* saveds >= 3 as well. */ + inst[0] = MOV_r_rm; + inst[1] = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | 0x4 /* esp */; + inst[2] = 0x24; + inst[3] = sizeof(sljit_sw) * (3 + 2); /* saveds >= 3 as well. */ } #else if (args > 0) { - *inst++ = MOV_r_rm; - *inst++ = MOD_DISP8 | (reg_map[SLJIT_S0] << 3) | reg_map[TMP_REG1]; - *inst++ = sizeof(sljit_sw) * 2; + inst[0] = MOV_r_rm; + inst[1] = MOD_DISP8 | (reg_map[SLJIT_S0] << 3) | reg_map[TMP_REG1]; + inst[2] = sizeof(sljit_sw) * 2; + inst += 3; } if (args > 1) { - *inst++ = MOV_r_rm; - *inst++ = MOD_DISP8 | (reg_map[SLJIT_S1] << 3) | reg_map[TMP_REG1]; - *inst++ = sizeof(sljit_sw) * 3; + inst[0] = MOV_r_rm; + inst[1] = MOD_DISP8 | (reg_map[SLJIT_S1] << 3) | reg_map[TMP_REG1]; + inst[2] = sizeof(sljit_sw) * 3; + inst += 3; } if (args > 2) { - *inst++ = MOV_r_rm; - *inst++ = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | reg_map[TMP_REG1]; - *inst++ = sizeof(sljit_sw) * 4; + inst[0] = MOV_r_rm; + inst[1] = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | reg_map[TMP_REG1]; + inst[2] = sizeof(sljit_sw) * 4; } #endif @@ -170,17 +174,36 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi compiler->local_size = local_size; #ifdef _WIN32 - if (local_size > 1024) { -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size)); -#else - /* Space for a single argument. This amount is excluded when the stack is allocated below. */ - local_size -= sizeof(sljit_sw); - FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size)); - FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, sizeof(sljit_sw))); -#endif - FAIL_IF(sljit_emit_icall(compiler, SLJIT_CALL, SLJIT_ARG1(SW), SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_grow_stack))); + if (local_size > 0) { + if (local_size <= 4 * 4096) { + if (local_size > 4096) + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -4096); + if (local_size > 2 * 4096) + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -4096 * 2); + if (local_size > 3 * 4096) + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -4096 * 3); + } + else { + EMIT_MOV(compiler, SLJIT_R0, 0, SLJIT_SP, 0); + EMIT_MOV(compiler, SLJIT_R1, 0, SLJIT_IMM, (local_size - 1) >> 12); + + SLJIT_ASSERT (reg_map[SLJIT_R0] == 0); + + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_R0), -4096); + FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), + SLJIT_R0, 0, SLJIT_R0, 0, SLJIT_IMM, 4096)); + FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), + SLJIT_R1, 0, SLJIT_R1, 0, SLJIT_IMM, 1)); + + inst = (sljit_u8*)ensure_buf(compiler, 1 + 2); + FAIL_IF(!inst); + + INC_SIZE(2); + inst[0] = JNE_i8; + inst[1] = (sljit_s8) -16; + } + + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -local_size); } #endif |