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Fix some offset size checks in instruction generation code.

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This commit is contained in:
SarahW 2020-01-15 19:59:33 +00:00
commit a140d26315
3 changed files with 3 additions and 3 deletions
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2
src/codegen_backend_x86-64_ops.c
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@ -1014,7 +1014,7 @@ void host_x86_MOV32_STACK_IMM(codeblock_t *block, int32_t offset, uint32_t imm_d
codegen_addbyte3(block, 0xc7, 0x04, 0x24); /*MOV [ESP], imm_data*/
codegen_addlong(block, imm_data);
}
else if (offset >= -80 || offset < 0x80)
else if (offset >= -0x80 && offset < 0x80)
{
codegen_alloc_bytes(block, 8);
codegen_addbyte4(block, 0xc7, 0x44, 0x24, offset & 0xff); /*MOV offset[ESP], imm_data*/

2
src/codegen_backend_x86_ops.c
View file

@ -759,7 +759,7 @@ void host_x86_MOV32_STACK_IMM(codeblock_t *block, int32_t offset, uint32_t imm_d
codegen_addbyte3(block, 0xc7, 0x04, 0x24); /*MOV [ESP], imm_data*/
codegen_addlong(block, imm_data);
}
else if (offset >= -80 || offset < 0x80)
else if (offset >= -0x80 && offset < 0x80)
{
codegen_alloc_bytes(block, 8);
codegen_addbyte4(block, 0xc7, 0x44, 0x24, offset & 0xff); /*MOV offset[ESP], imm_data*/

2
src/codegen_backend_x86_ops_sse.c
View file

@ -200,7 +200,7 @@ void host_x86_MOVQ_STACK_OFFSET_XREG(codeblock_t *block, int offset, int src_reg
codegen_addbyte4(block, 0x66, 0x0f, 0xd6, 0x04 | (src_reg << 3)); /*MOVQ [ESP], src_reg*/
codegen_addbyte(block, 0x24);
}
else if (offset >= -80 || offset < 0x80)
else if (offset >= -0x80 && offset < 0x80)
{
codegen_alloc_bytes(block, 6);
codegen_addbyte4(block, 0x66, 0x0f, 0xd6, 0x44 | (src_reg << 3)); /*MOVQ offset[ESP], src_reg*/