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decode: Optimize handling of immediates

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This commit is contained in:
Alexis Engelke
2023-03-19 21:16:00 +01:00
parent 957537651e
commit 262370046c
1 changed files with 3 additions and 2 deletions
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5
decode.c
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@@ -583,7 +583,8 @@ fd_decode(const uint8_t* buffer, size_t len_sz, int mode_int, uintptr_t address,
} }
uint32_t imm_control = UNLIKELY(DESC_IMM_CONTROL(desc)); uint32_t imm_control = UNLIKELY(DESC_IMM_CONTROL(desc));
if (UNLIKELY(imm_control == 1)) if (LIKELY(!imm_control)) {
} else if (UNLIKELY(imm_control == 1))
{ {
// 1 = immediate constant 1, used for shifts // 1 = immediate constant 1, used for shifts
FdOp* operand = &instr->operands[DESC_IMM_IDX(desc)]; FdOp* operand = &instr->operands[DESC_IMM_IDX(desc)];
@@ -732,7 +733,7 @@ skip_modrm:
} }
instr->size = off; instr->size = off;
instr->operandsz = DESC_INSTR_WIDTH(desc) ? op_size - 1 : 0; instr->operandsz = UNLIKELY(DESC_INSTR_WIDTH(desc)) ? op_size - 1 : 0;
return off; return off;
} }