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-rw-r--r--src/emu/x64run660f.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/emu/x64run660f.c b/src/emu/x64run660f.c
index 08f23f7d..94445359 100644
--- a/src/emu/x64run660f.c
+++ b/src/emu/x64run660f.c
@@ -1265,6 +1265,22 @@ int Run660F(x64emu_t *emu, rex_t rex)
         GX->q[1] = eax1.q[1];

         break;

 

+    case 0xC8:

+    case 0xC9:

+    case 0xCA:

+    case 0xCB:

+    case 0xCC:

+    case 0xCD:

+    case 0xCE:

+    case 0xCF:                  /* BSWAP reg16 */

+        tmp8u = (opcode&7)+(rex.b<<3);

+        if(rex.w) {

+            emu->regs[tmp8u].q[0] = __builtin_bswap64(emu->regs[tmp8u].q[0]);

+        } else {

+            emu->regs[tmp8u].word[0] = __builtin_bswap16(emu->regs[tmp8u].word[0]);

+        }

+        break;

+

     case 0xD1:  /* PSRLW Gx, Ex */

         nextop = F8;

         GETEX(0);