DynASM/x64: Fix for full VREG support.

Thanks to Peter Cawley.

1 files changed, 2 insertions, 1 deletions

diff --git a/dynasm/dasm_x86.h b/dynasm/dasm_x86.h
index 4d2b773b..be9c289f 100644
--- a/dynasm/dasm_x86.h
+++ b/dynasm/dasm_x86.h
@@ -403,6 +403,7 @@ int dasm_encode(Dst_DECL, void *buffer)
           unsigned char *ex = cp - (t&7);
           if ((n & 8) && t < 0xa0) {
             if (*ex & 0x80) ex[1] ^= 0x20 << (t>>6); else *ex ^= 1 << (t>>6);
+            n &= 7;
           } else if (n & 0x10) {
             if (*ex & 0x80) {
               *ex = 0xc5; ex[1] = (ex[1] & 0x80) | ex[2]; ex += 2;
@@ -410,8 +411,8 @@ int dasm_encode(Dst_DECL, void *buffer)
             while (++ex < cp) ex[-1] = *ex;
             if (mark) mark--;
             cp--;
+            n &= 7;
           }
-          n &= 7;
           if (t >= 0xc0) n <<= 4;
           else if (t >= 0x40) n <<= 3;
           else if (n == 4 && t < 0x20) { cp[-1] ^= n; *cp++ = 0x20; }