Add extension bytecodes to support operands 4+

The bytecode format assumes max 4 operands pretty strictly, but we
already have one instruction with 5 operands, and it's likely to get
more.  Support them via extension prefixes (similar to REX prefixes).
For bytecodes which use argument bytes we encode the number directly,
however.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/disasm.c b/disasm.c
index 4efcdc8..70bbfc1 100644
--- a/disasm.c
+++ b/disasm.c
@@ -402,6 +402,7 @@ static int matches(const struct itemplate *t, uint8_t *data,
 	case 01:
 	case 02:
 	case 03:
+	case 04:
             while (c--)
                 if (*r++ != *data++)
                     return false;