target-openrisc: Correct carry flag check of l.addc and l.addic test cases

The test cases did not correctly test for the carry flag.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

tests/tcg/openrisc/test_addc.c

@@ -7,9 +7,10 @@ int main(void)
 
     b = 0x01;
     c = 0xffffffff;
-    result = 1;
+    result = 0;
     __asm
-    ("l.addc   %0, %1, %2\n\t"
+    ("l.add r1, r1, r0\n\t" /* clear carry */
+     "l.addc   %0, %1, %2\n\t"
      : "=r"(a)
      : "r"(b), "r"(c)
     );
@@ -22,7 +23,8 @@ int main(void)
     c = 0xffffffff;
     result = 0x80000001;
     __asm
-    ("l.addc   %0, %1, %2\n\t"
+    ("l.add r1, r1, r0\n\t" /* clear carry */
+     "l.addc   %0, %1, %2\n\t"
      "l.movhi  %2, 0x7fff\n\t"
      "l.ori    %2, %2, 0xffff\n\t"
      "l.addc   %0, %1, %2\n\t"

tests/tcg/openrisc/test_addic.c

@@ -6,9 +6,10 @@ int main(void)
     int result;
 
     a = 1;
-    result = 0x1;
+    result = 0x0;
     __asm
-    ("l.addic %0, %0, 0xffff\n\t"
+    ("l.add r1, r1, r0\n\t" /* clear carry */
+     "l.addic %0, %0, 0xffff\n\t"
      : "+r"(a)
     );
     if (a != result) {
@@ -16,10 +17,11 @@ int main(void)
         return -1;
    }
 
-    a = 0x1;
+    a = -1;
     result = 0x201;
     __asm
-    ("l.addic %0, %0, 0xffff\n\t"
+    ("l.add r1, r1, r0\n\t"  /* clear carry */
+     "l.addic %0, %0, 0x1\n\t"
      "l.ori   %0, r0, 0x100\n\t"
      "l.addic %0, %0, 0x100\n\t"
      : "+r"(a)