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Reduce space required by instruction width

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This commit is contained in:
Alexis Engelke
2019-01-13 14:26:26 +01:00
parent c05b555bb0
commit 80458e3288
3 changed files with 13 additions and 11 deletions
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16
decode.c
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@@ -567,35 +567,37 @@ decode(const uint8_t* buffer, int len, DecodeMode mode, Instr* instr)
instr->segment = RI_DS;
}
uint8_t op_size = 0;
uint8_t op_size_log = 0;
if (desc->gp_size_8)
{
op_size = 1;
op_size_log = 1;
}
#if defined(ARCH_X86_64)
else if (prefixes & PREFIX_REXW)
{
op_size = 8;
op_size_log = 4;
}
#endif
else if (prefixes & PREFIX_OPSZ)
{
op_size = 2;
op_size_log = 2;
}
#if defined(ARCH_X86_64)
else if (mode == DECODE_64 && desc->gp_size_def64)
{
op_size = 8;
op_size_log = 4;
}
#endif
else
{
op_size = 4;
op_size_log = 3;
}
uint8_t op_size = (1 << op_size_log) >> 1;
if (UNLIKELY(desc->gp_instr_width))
{
instr->width = op_size;
instr->width = op_size_log;
}
else
{