Add {vex3} and {vex2} prefixes by analogy with {evex}

Allow specifying {vex3} or {vex2} (the latter is currently always
redundant, unless we end up with instructions at some point can be
specified with legacy prefixes or VEX) to select a specific encoding
of VEX-encoded instructions.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/parser.c b/parser.c
index f73c7b5..4f0898c 100644
--- a/parser.c
+++ b/parser.c
@@ -102,7 +102,9 @@ static int prefix_slot(int prefix)
     case P_ASP:
         return PPS_ASIZE;
     case P_EVEX:
-        return PPS_EVEX;
+    case P_VEX3:
+    case P_VEX2:
+        return PPS_VEX;
     default:
         nasm_error(ERR_PANIC, "Invalid value %d passed to prefix_slot()", prefix);
         return -1;