diff options
Diffstat (limited to 'disasm.c')
| -rw-r--r-- | disasm.c | 12 |
1 files changed, 7 insertions, 5 deletions
@@ -678,6 +678,7 @@ static int matches(const struct itemplate *t, uint8_t *data, { int vexm = *r++; int vexwlp = *r++; + ins->rex |= REX_V; if ((prefix->rex & (REX_V|REX_D|REX_P)) != REX_V) return false; @@ -685,24 +686,25 @@ static int matches(const struct itemplate *t, uint8_t *data, if ((vexm & 0x1f) != prefix->vex_m) return false; - switch (vexwlp & 030) { + switch (vexwlp & 060) { case 000: if (prefix->rex & REX_W) return false; break; - case 010: + case 020: if (!(prefix->rex & REX_W)) return false; ins->rex &= ~REX_W; break; - case 020: /* VEX.W is a don't care */ + case 040: /* VEX.W is a don't care */ ins->rex &= ~REX_W; break; - case 030: + case 060: break; } - if ((vexwlp & 007) != prefix->vex_lp) + /* The 010 bit of vexwlp is set if VEX.L is ignored */ + if ((vexwlp ^ prefix->vex_lp) & ((vexwlp & 010) ? 03 : 07)) return false; opx->segment |= SEG_RMREG; |