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Added segment limit checking to some instructions.

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This commit is contained in:
SarahW 2019-02-03 17:48:11 +00:00
commit 095cf53265
11 changed files with 272 additions and 1 deletions
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42
src/codegen_backend_x86_uops.c
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@ -285,6 +285,45 @@ static int codegen_CMP_IMM_JZ_DEST(codeblock_t *block, uop_t *uop)
return 0;
}
static int codegen_CMP_JB(codeblock_t *block, uop_t *uop)
{
int src_reg_a = HOST_REG_GET(uop->src_reg_a_real), src_reg_b = HOST_REG_GET(uop->src_reg_b_real);
int src_size_a = IREG_GET_SIZE(uop->src_reg_a_real), src_size_b = IREG_GET_SIZE(uop->src_reg_b_real);
uint32_t *jump_p;
if (REG_IS_L(src_size_a) && REG_IS_L(src_size_b))
{
host_x86_CMP32_REG_REG(block, src_reg_a, src_reg_b);
}
#ifdef RECOMPILER_DEBUG
else
fatal("CMP_JB %02x\n", uop->src_reg_a_real);
#endif
jump_p = host_x86_JB_long(block);
*jump_p = (uintptr_t)uop->p - ((uintptr_t)jump_p + 4);
return 0;
}
static int codegen_CMP_JNBE(codeblock_t *block, uop_t *uop)
{
int src_reg_a = HOST_REG_GET(uop->src_reg_a_real), src_reg_b = HOST_REG_GET(uop->src_reg_b_real);
int src_size_a = IREG_GET_SIZE(uop->src_reg_a_real), src_size_b = IREG_GET_SIZE(uop->src_reg_b_real);
uint32_t *jump_p;
if (REG_IS_L(src_size_a) && REG_IS_L(src_size_b))
{
host_x86_CMP32_REG_REG(block, src_reg_a, src_reg_b);
}
#ifdef RECOMPILER_DEBUG
else
fatal("CMP_JNBE %02x\n", uop->src_reg_a_real);
#endif
jump_p = host_x86_JNBE_long(block);
*jump_p = (uintptr_t)uop->p - ((uintptr_t)jump_p + 4);
return 0;
}
static int codegen_CMP_JNB_DEST(codeblock_t *block, uop_t *uop)
{
int src_reg_a = HOST_REG_GET(uop->src_reg_a_real), src_reg_b = HOST_REG_GET(uop->src_reg_b_real);
@ -2664,6 +2703,9 @@ const uOpFn uop_handlers[UOP_MAX] =
[UOP_CMP_IMM_JZ & UOP_MASK] = codegen_CMP_IMM_JZ,
[UOP_CMP_JB & UOP_MASK] = codegen_CMP_JB,
[UOP_CMP_JNBE & UOP_MASK] = codegen_CMP_JNBE,
[UOP_CMP_JNB_DEST & UOP_MASK] = codegen_CMP_JNB_DEST,
[UOP_CMP_JNBE_DEST & UOP_MASK] = codegen_CMP_JNBE_DEST,
[UOP_CMP_JNL_DEST & UOP_MASK] = codegen_CMP_JNL_DEST,