Fix: setxx instructions should only accept byte registers

diff --git a/mach/i386/as/mach4.c b/mach/i386/as/mach4.c
index 24ec29d..711c3c7 100644 (file)
--- a/mach/i386/as/mach4.c
+++ b/mach/i386/as/mach4.c
@@ -129,7 +129,11 @@ oper       :       NOOP_1
                                emit2((int)($2.val));
                        }
        |       SETCC ea_2
-                       {       emit1(0xF); emit1($1|0x90); ea_2(0);}
+                       {       if (reg_2 & (IS_R32|IS_RSEG)) {
+                                       serror("register error");
+                               }
+                               emit1(0xF); emit1($1|0x90); ea_2(0);
+                       }
        |       XCHG ea_ea
                        {       xchg($1);}
        |       TEST ea_ea