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Diffstat (limited to 'src/3rdparty/pcre/sljit/sljitNativeX86_32.c')
-rw-r--r--src/3rdparty/pcre/sljit/sljitNativeX86_32.c517
1 files changed, 517 insertions, 0 deletions
diff --git a/src/3rdparty/pcre/sljit/sljitNativeX86_32.c b/src/3rdparty/pcre/sljit/sljitNativeX86_32.c
new file mode 100644
index 0000000000..68bca8441a
--- /dev/null
+++ b/src/3rdparty/pcre/sljit/sljitNativeX86_32.c
@@ -0,0 +1,517 @@
+/*
+ * Stack-less Just-In-Time compiler
+ *
+ * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* x86 32-bit arch dependent functions. */
+
+static int emit_do_imm(struct sljit_compiler *compiler, sljit_ub opcode, sljit_w imm)
+{
+ sljit_ub *buf;
+
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + 1 + sizeof(sljit_w));
+ FAIL_IF(!buf);
+ INC_SIZE(1 + sizeof(sljit_w));
+ *buf++ = opcode;
+ *(sljit_w*)buf = imm;
+ return SLJIT_SUCCESS;
+}
+
+static sljit_ub* generate_far_jump_code(struct sljit_jump *jump, sljit_ub *code_ptr, int type)
+{
+ if (type == SLJIT_JUMP) {
+ *code_ptr++ = 0xe9;
+ jump->addr++;
+ }
+ else if (type >= SLJIT_FAST_CALL) {
+ *code_ptr++ = 0xe8;
+ jump->addr++;
+ }
+ else {
+ *code_ptr++ = 0x0f;
+ *code_ptr++ = get_jump_code(type);
+ jump->addr += 2;
+ }
+
+ if (jump->flags & JUMP_LABEL)
+ jump->flags |= PATCH_MW;
+ else
+ *(sljit_w*)code_ptr = jump->u.target - (jump->addr + 4);
+ code_ptr += 4;
+
+ return code_ptr;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int saveds, int local_size)
+{
+ int size;
+ sljit_ub *buf;
+
+ CHECK_ERROR();
+ check_sljit_emit_enter(compiler, args, temporaries, saveds, local_size);
+
+ compiler->temporaries = temporaries;
+ compiler->saveds = saveds;
+ compiler->args = args;
+ compiler->flags_saved = 0;
+
+#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
+ size = 1 + (saveds <= 3 ? saveds : 3) + (args > 0 ? (args * 2) : 0) + (args > 2 ? 2 : 0);
+#else
+ size = 1 + (saveds <= 3 ? saveds : 3) + (args > 0 ? (2 + args * 3) : 0);
+#endif
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + size);
+ FAIL_IF(!buf);
+
+ INC_SIZE(size);
+ PUSH_REG(reg_map[TMP_REGISTER]);
+#if !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
+ if (args > 0) {
+ *buf++ = 0x8b;
+ *buf++ = 0xc4 | (reg_map[TMP_REGISTER] << 3);
+ }
+#endif
+ if (saveds > 2)
+ PUSH_REG(reg_map[SLJIT_SAVED_REG3]);
+ if (saveds > 1)
+ PUSH_REG(reg_map[SLJIT_SAVED_REG2]);
+ if (saveds > 0)
+ PUSH_REG(reg_map[SLJIT_SAVED_REG1]);
+
+#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
+ if (args > 0) {
+ *buf++ = 0x8b;
+ *buf++ = 0xc0 | (reg_map[SLJIT_SAVED_REG1] << 3) | reg_map[SLJIT_TEMPORARY_REG3];
+ }
+ if (args > 1) {
+ *buf++ = 0x8b;
+ *buf++ = 0xc0 | (reg_map[SLJIT_SAVED_REG2] << 3) | reg_map[SLJIT_TEMPORARY_REG2];
+ }
+ if (args > 2) {
+ *buf++ = 0x8b;
+ *buf++ = 0x44 | (reg_map[SLJIT_SAVED_REG3] << 3);
+ *buf++ = 0x24;
+ *buf++ = sizeof(sljit_w) * (3 + 2); /* saveds >= 3 as well. */
+ }
+#else
+ if (args > 0) {
+ *buf++ = 0x8b;
+ *buf++ = 0x40 | (reg_map[SLJIT_SAVED_REG1] << 3) | reg_map[TMP_REGISTER];
+ *buf++ = sizeof(sljit_w) * 2;
+ }
+ if (args > 1) {
+ *buf++ = 0x8b;
+ *buf++ = 0x40 | (reg_map[SLJIT_SAVED_REG2] << 3) | reg_map[TMP_REGISTER];
+ *buf++ = sizeof(sljit_w) * 3;
+ }
+ if (args > 2) {
+ *buf++ = 0x8b;
+ *buf++ = 0x40 | (reg_map[SLJIT_SAVED_REG3] << 3) | reg_map[TMP_REGISTER];
+ *buf++ = sizeof(sljit_w) * 4;
+ }
+#endif
+
+ local_size = (local_size + sizeof(sljit_uw) - 1) & ~(sizeof(sljit_uw) - 1);
+ compiler->temporaries_start = local_size;
+ if (temporaries > 3)
+ local_size += (temporaries - 3) * sizeof(sljit_uw);
+ compiler->saveds_start = local_size;
+ if (saveds > 3)
+ local_size += (saveds - 3) * sizeof(sljit_uw);
+
+#ifdef _WIN32
+ if (local_size > 1024) {
+ FAIL_IF(emit_do_imm(compiler, 0xb8 + reg_map[SLJIT_TEMPORARY_REG1], local_size));
+ FAIL_IF(sljit_emit_ijump(compiler, SLJIT_CALL1, SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_touch_stack)));
+ }
+#endif
+
+ compiler->local_size = local_size;
+ if (local_size > 0)
+ return emit_non_cum_binary(compiler, 0x2b, 0x29, 0x5 << 3, 0x2d,
+ SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size);
+
+ return SLJIT_SUCCESS;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, int args, int temporaries, int saveds, int local_size)
+{
+ CHECK_ERROR_VOID();
+ check_sljit_set_context(compiler, args, temporaries, saveds, local_size);
+
+ compiler->temporaries = temporaries;
+ compiler->saveds = saveds;
+ compiler->args = args;
+ compiler->local_size = (local_size + sizeof(sljit_uw) - 1) & ~(sizeof(sljit_uw) - 1);
+ compiler->temporaries_start = compiler->local_size;
+ if (temporaries > 3)
+ compiler->local_size += (temporaries - 3) * sizeof(sljit_uw);
+ compiler->saveds_start = compiler->local_size;
+ if (saveds > 3)
+ compiler->local_size += (saveds - 3) * sizeof(sljit_uw);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int op, int src, sljit_w srcw)
+{
+ int size;
+ sljit_ub *buf;
+
+ CHECK_ERROR();
+ check_sljit_emit_return(compiler, op, src, srcw);
+ SLJIT_ASSERT(compiler->args >= 0);
+
+ compiler->flags_saved = 0;
+ FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
+
+ if (compiler->local_size > 0)
+ FAIL_IF(emit_cum_binary(compiler, 0x03, 0x01, 0x0 << 3, 0x05,
+ SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
+
+ size = 2 + (compiler->saveds <= 3 ? compiler->saveds : 3);
+#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
+ if (compiler->args > 2)
+ size += 2;
+#else
+ if (compiler->args > 0)
+ size += 2;
+#endif
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + size);
+ FAIL_IF(!buf);
+
+ INC_SIZE(size);
+
+ if (compiler->saveds > 0)
+ POP_REG(reg_map[SLJIT_SAVED_REG1]);
+ if (compiler->saveds > 1)
+ POP_REG(reg_map[SLJIT_SAVED_REG2]);
+ if (compiler->saveds > 2)
+ POP_REG(reg_map[SLJIT_SAVED_REG3]);
+ POP_REG(reg_map[TMP_REGISTER]);
+#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
+ if (compiler->args > 2)
+ RETN(sizeof(sljit_w));
+ else
+ RET();
+#else
+ if (compiler->args > 0)
+ RETN(compiler->args * sizeof(sljit_w));
+ else
+ RET();
+#endif
+
+ return SLJIT_SUCCESS;
+}
+
+/* --------------------------------------------------------------------- */
+/* Operators */
+/* --------------------------------------------------------------------- */
+
+/* Size contains the flags as well. */
+static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, int size,
+ /* The register or immediate operand. */
+ int a, sljit_w imma,
+ /* The general operand (not immediate). */
+ int b, sljit_w immb)
+{
+ sljit_ub *buf;
+ sljit_ub *buf_ptr;
+ int flags = size & ~0xf;
+ int inst_size;
+
+ /* Both cannot be switched on. */
+ SLJIT_ASSERT((flags & (EX86_BIN_INS | EX86_SHIFT_INS)) != (EX86_BIN_INS | EX86_SHIFT_INS));
+ /* Size flags not allowed for typed instructions. */
+ SLJIT_ASSERT(!(flags & (EX86_BIN_INS | EX86_SHIFT_INS)) || (flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) == 0);
+ /* Both size flags cannot be switched on. */
+ SLJIT_ASSERT((flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) != (EX86_BYTE_ARG | EX86_HALF_ARG));
+#if (defined SLJIT_SSE2 && SLJIT_SSE2)
+ /* SSE2 and immediate is not possible. */
+ SLJIT_ASSERT(!(a & SLJIT_IMM) || !(flags & EX86_SSE2));
+#endif
+
+ size &= 0xf;
+ inst_size = size;
+
+#if (defined SLJIT_SSE2 && SLJIT_SSE2)
+ if (flags & EX86_PREF_F2)
+ inst_size++;
+#endif
+ if (flags & EX86_PREF_66)
+ inst_size++;
+
+ /* Calculate size of b. */
+ inst_size += 1; /* mod r/m byte. */
+ if (b & SLJIT_MEM) {
+ if ((b & 0x0f) == SLJIT_UNUSED)
+ inst_size += sizeof(sljit_w);
+ else if (immb != 0 && !(b & 0xf0)) {
+ /* Immediate operand. */
+ if (immb <= 127 && immb >= -128)
+ inst_size += sizeof(sljit_b);
+ else
+ inst_size += sizeof(sljit_w);
+ }
+
+ if ((b & 0xf) == SLJIT_LOCALS_REG && !(b & 0xf0))
+ b |= SLJIT_LOCALS_REG << 4;
+
+ if ((b & 0xf0) != SLJIT_UNUSED)
+ inst_size += 1; /* SIB byte. */
+ }
+
+ /* Calculate size of a. */
+ if (a & SLJIT_IMM) {
+ if (flags & EX86_BIN_INS) {
+ if (imma <= 127 && imma >= -128) {
+ inst_size += 1;
+ flags |= EX86_BYTE_ARG;
+ } else
+ inst_size += 4;
+ }
+ else if (flags & EX86_SHIFT_INS) {
+ imma &= 0x1f;
+ if (imma != 1) {
+ inst_size ++;
+ flags |= EX86_BYTE_ARG;
+ }
+ } else if (flags & EX86_BYTE_ARG)
+ inst_size++;
+ else if (flags & EX86_HALF_ARG)
+ inst_size += sizeof(short);
+ else
+ inst_size += sizeof(sljit_w);
+ }
+ else
+ SLJIT_ASSERT(!(flags & EX86_SHIFT_INS) || a == SLJIT_PREF_SHIFT_REG);
+
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + inst_size);
+ PTR_FAIL_IF(!buf);
+
+ /* Encoding the byte. */
+ INC_SIZE(inst_size);
+#if (defined SLJIT_SSE2 && SLJIT_SSE2)
+ if (flags & EX86_PREF_F2)
+ *buf++ = 0xf2;
+#endif
+ if (flags & EX86_PREF_66)
+ *buf++ = 0x66;
+
+ buf_ptr = buf + size;
+
+ /* Encode mod/rm byte. */
+ if (!(flags & EX86_SHIFT_INS)) {
+ if ((flags & EX86_BIN_INS) && (a & SLJIT_IMM))
+ *buf = (flags & EX86_BYTE_ARG) ? 0x83 : 0x81;
+
+ if ((a & SLJIT_IMM) || (a == 0))
+ *buf_ptr = 0;
+#if (defined SLJIT_SSE2 && SLJIT_SSE2)
+ else if (!(flags & EX86_SSE2))
+ *buf_ptr = reg_map[a] << 3;
+ else
+ *buf_ptr = a << 3;
+#else
+ else
+ *buf_ptr = reg_map[a] << 3;
+#endif
+ }
+ else {
+ if (a & SLJIT_IMM) {
+ if (imma == 1)
+ *buf = 0xd1;
+ else
+ *buf = 0xc1;
+ } else
+ *buf = 0xd3;
+ *buf_ptr = 0;
+ }
+
+ if (!(b & SLJIT_MEM))
+#if (defined SLJIT_SSE2 && SLJIT_SSE2)
+ *buf_ptr++ |= 0xc0 + ((!(flags & EX86_SSE2)) ? reg_map[b] : b);
+#else
+ *buf_ptr++ |= 0xc0 + reg_map[b];
+#endif
+ else if ((b & 0x0f) != SLJIT_UNUSED) {
+ if ((b & 0xf0) == SLJIT_UNUSED || (b & 0xf0) == (SLJIT_LOCALS_REG << 4)) {
+ if (immb != 0) {
+ if (immb <= 127 && immb >= -128)
+ *buf_ptr |= 0x40;
+ else
+ *buf_ptr |= 0x80;
+ }
+
+ if ((b & 0xf0) == SLJIT_UNUSED)
+ *buf_ptr++ |= reg_map[b & 0x0f];
+ else {
+ *buf_ptr++ |= 0x04;
+ *buf_ptr++ = reg_map[b & 0x0f] | (reg_map[(b >> 4) & 0x0f] << 3);
+ }
+
+ if (immb != 0) {
+ if (immb <= 127 && immb >= -128)
+ *buf_ptr++ = immb; /* 8 bit displacement. */
+ else {
+ *(sljit_w*)buf_ptr = immb; /* 32 bit displacement. */
+ buf_ptr += sizeof(sljit_w);
+ }
+ }
+ }
+ else {
+ *buf_ptr++ |= 0x04;
+ *buf_ptr++ = reg_map[b & 0x0f] | (reg_map[(b >> 4) & 0x0f] << 3) | (immb << 6);
+ }
+ }
+ else {
+ *buf_ptr++ |= 0x05;
+ *(sljit_w*)buf_ptr = immb; /* 32 bit displacement. */
+ buf_ptr += sizeof(sljit_w);
+ }
+
+ if (a & SLJIT_IMM) {
+ if (flags & EX86_BYTE_ARG)
+ *buf_ptr = imma;
+ else if (flags & EX86_HALF_ARG)
+ *(short*)buf_ptr = imma;
+ else if (!(flags & EX86_SHIFT_INS))
+ *(sljit_w*)buf_ptr = imma;
+ }
+
+ return !(flags & EX86_SHIFT_INS) ? buf : (buf + 1);
+}
+
+/* --------------------------------------------------------------------- */
+/* Call / return instructions */
+/* --------------------------------------------------------------------- */
+
+static SLJIT_INLINE int call_with_args(struct sljit_compiler *compiler, int type)
+{
+ sljit_ub *buf;
+
+#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
+ buf = (sljit_ub*)ensure_buf(compiler, type >= SLJIT_CALL3 ? 1 + 2 + 1 : 1 + 2);
+ FAIL_IF(!buf);
+ INC_SIZE(type >= SLJIT_CALL3 ? 2 + 1 : 2);
+
+ if (type >= SLJIT_CALL3)
+ PUSH_REG(reg_map[SLJIT_TEMPORARY_REG3]);
+ *buf++ = 0x8b;
+ *buf++ = 0xc0 | (reg_map[SLJIT_TEMPORARY_REG3] << 3) | reg_map[SLJIT_TEMPORARY_REG1];
+#else
+ buf = (sljit_ub*)ensure_buf(compiler, type - SLJIT_CALL0 + 1);
+ FAIL_IF(!buf);
+ INC_SIZE(type - SLJIT_CALL0);
+ if (type >= SLJIT_CALL3)
+ PUSH_REG(reg_map[SLJIT_TEMPORARY_REG3]);
+ if (type >= SLJIT_CALL2)
+ PUSH_REG(reg_map[SLJIT_TEMPORARY_REG2]);
+ PUSH_REG(reg_map[SLJIT_TEMPORARY_REG1]);
+#endif
+ return SLJIT_SUCCESS;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int saveds, int local_size)
+{
+ sljit_ub *buf;
+
+ CHECK_ERROR();
+ check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, saveds, local_size);
+
+ compiler->temporaries = temporaries;
+ compiler->saveds = saveds;
+ compiler->args = args;
+ compiler->local_size = (local_size + sizeof(sljit_uw) - 1) & ~(sizeof(sljit_uw) - 1);
+ compiler->temporaries_start = compiler->local_size;
+ if (temporaries > 3)
+ compiler->local_size += (temporaries - 3) * sizeof(sljit_uw);
+ compiler->saveds_start = compiler->local_size;
+ if (saveds > 3)
+ compiler->local_size += (saveds - 3) * sizeof(sljit_uw);
+
+ CHECK_EXTRA_REGS(dst, dstw, (void)0);
+
+ if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + 1);
+ FAIL_IF(!buf);
+
+ INC_SIZE(1);
+ POP_REG(reg_map[dst]);
+ return SLJIT_SUCCESS;
+ }
+ else if (dst & SLJIT_MEM) {
+ buf = emit_x86_instruction(compiler, 1, 0, 0, dst, dstw);
+ FAIL_IF(!buf);
+ *buf++ = 0x8f;
+ return SLJIT_SUCCESS;
+ }
+
+ /* For UNUSED dst. Uncommon, but possible. */
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + 1);
+ FAIL_IF(!buf);
+
+ INC_SIZE(1);
+ POP_REG(reg_map[TMP_REGISTER]);
+ return SLJIT_SUCCESS;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
+{
+ sljit_ub *buf;
+
+ CHECK_ERROR();
+ check_sljit_emit_fast_return(compiler, src, srcw);
+
+ CHECK_EXTRA_REGS(src, srcw, (void)0);
+
+ if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS) {
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + 1 + 1);
+ FAIL_IF(!buf);
+
+ INC_SIZE(1 + 1);
+ PUSH_REG(reg_map[src]);
+ }
+ else if (src & SLJIT_MEM) {
+ buf = emit_x86_instruction(compiler, 1, 0, 0, src, srcw);
+ FAIL_IF(!buf);
+ *buf++ = 0xff;
+ *buf |= 6 << 3;
+
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + 1);
+ FAIL_IF(!buf);
+ INC_SIZE(1);
+ }
+ else {
+ /* SLJIT_IMM. */
+ buf = (sljit_ub*)ensure_buf(compiler, 1 + 5 + 1);
+ FAIL_IF(!buf);
+
+ INC_SIZE(5 + 1);
+ *buf++ = 0x68;
+ *(sljit_w*)buf = srcw;
+ buf += sizeof(sljit_w);
+ }
+
+ RET();
+ return SLJIT_SUCCESS;
+}
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