Use a normal quad-case for valueless /is4

When we don't have an immediate for the i-field in /is4, then use a
normal quad-bytecode encoding for it to save some small amount of
space and re-use existing machinery.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/disasm.c b/disasm.c
index 5c9d6db..e9d1763 100644
--- a/disasm.c
+++ b/disasm.c
@@ -621,13 +621,12 @@ static int matches(const struct itemplate *t, uint8_t *data,
 	}
 	break;
 
-	case 0174:
+	case4(0174):
 	{
 	    uint8_t ximm = *data++;
-	    c = *r++;
 
-	    ins->oprs[c].basereg = (ximm >> 4) & regmask;
-	    ins->oprs[c].segment |= SEG_RMREG;
+	    opx->basereg = (ximm >> 4) & regmask;
+	    opx->segment |= SEG_RMREG;
 	}
 	break;