SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
{
sljit_ub *inst;
CHECK_ERROR();
CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
ADJUST_LOCAL_OFFSET(dst, dstw);
CHECK_EXTRA_REGS(dst, dstw, (void)0);
/* For UNUSED dst. Uncommon, but possible. */
if (dst == SLJIT_UNUSED)
dst = TMP_REG1;
if (FAST_IS_REG(dst)) {
/* Unused dest is possible here. */
inst = (sljit_ub*)ensure_buf(compiler, 1 + 1);
FAIL_IF(!inst);
INC_SIZE(1);
POP_REG(reg_map[dst]);
return SLJIT_SUCCESS;
}
/* Memory. */
inst = emit_x86_instruction(compiler, 1, 0, 0, dst, dstw);
FAIL_IF(!inst);
*inst++ = POP_rm;
return SLJIT_SUCCESS;
}
int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
{
int size;
sljit_ub *buf;
CHECK_ERROR();
check_sljit_emit_return(compiler, src, srcw);
SLJIT_ASSERT(compiler->args >= 0);
compiler->flags_saved = 0;
CHECK_EXTRA_REGS(src, srcw, (void)0);
if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG)
FAIL_IF(emit_mov(compiler, SLJIT_RETURN_REG, 0, 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->generals <= 3 ? compiler->generals : 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->generals > 0)
POP_REG(reg_map[SLJIT_GENERAL_REG1]);
if (compiler->generals > 1)
POP_REG(reg_map[SLJIT_GENERAL_REG2]);
if (compiler->generals > 2)
POP_REG(reg_map[SLJIT_GENERAL_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;
}
SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
{
sljit_ub *inst;
CHECK_ERROR();
CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
ADJUST_LOCAL_OFFSET(src, srcw);
CHECK_EXTRA_REGS(src, srcw, (void)0);
if (FAST_IS_REG(src)) {
inst = (sljit_ub*)ensure_buf(compiler, 1 + 1 + 1);
FAIL_IF(!inst);
INC_SIZE(1 + 1);
PUSH_REG(reg_map[src]);
}
else if (src & SLJIT_MEM) {
inst = emit_x86_instruction(compiler, 1, 0, 0, src, srcw);
FAIL_IF(!inst);
*inst++ = GROUP_FF;
*inst |= PUSH_rm;
inst = (sljit_ub*)ensure_buf(compiler, 1 + 1);
FAIL_IF(!inst);
INC_SIZE(1);
}
else {
/* SLJIT_IMM. */
inst = (sljit_ub*)ensure_buf(compiler, 1 + 5 + 1);
FAIL_IF(!inst);
INC_SIZE(5 + 1);
*inst++ = PUSH_i32;
*(sljit_sw*)inst = srcw;
inst += sizeof(sljit_sw);
}
RET();
return SLJIT_SUCCESS;
}
