gwj / at91sam9263 · Commits

Commit d575b78aabd7579959cc089cc993960709b5bb33

Authored by bellard
1 parent 6e44ba7f

more xadd tests - cmpxchg8b test 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@558 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 28 additions and 0 deletions
tests/test-i386.c
  View file @d575b78
@@ -832,6 +832,13 @@ void test_xchg(void) @@ -832,6 +832,13 @@ void test_xchg(void)
832 TEST_XCHG(xaddw, "w", "=q"); 832 TEST_XCHG(xaddw, "w", "=q");
833 TEST_XCHG(xaddb, "b", "=q"); 833 TEST_XCHG(xaddb, "b", "=q");
834 834
  835 + {
  836 + int res;
  837 + res = 0x12345678;
  838 + asm("xaddl %1, %0" : "=r" (res) : "0" (res));
  839 + printf("xaddl same res=%08x\n", res);
  840 + }
  841 +
835 TEST_XCHG(xaddl, "", "=m"); 842 TEST_XCHG(xaddl, "", "=m");
836 TEST_XCHG(xaddw, "w", "=m"); 843 TEST_XCHG(xaddw, "w", "=m");
837 TEST_XCHG(xaddb, "b", "=m"); 844 TEST_XCHG(xaddb, "b", "=m");
@@ -851,6 +858,27 @@ void test_xchg(void) @@ -851,6 +858,27 @@ void test_xchg(void)
851 TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc); 858 TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc);
852 TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc); 859 TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc);
853 TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc); 860 TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc);
  861 +
  862 + {
  863 + uint64_t op0, op1, op2;
  864 + int i, eflags;
  865 +
  866 + for(i = 0; i < 2; i++) {
  867 + op0 = 0x123456789abcd;
  868 + if (i == 0)
  869 + op1 = 0xfbca765423456;
  870 + else
  871 + op1 = op0;
  872 + op2 = 0x6532432432434;
  873 + asm("cmpxchg8b %1\n"
  874 + "pushf\n"
  875 + "popl %2\n"
  876 + : "=A" (op0), "=m" (op1), "=g" (eflags)
  877 + : "0" (op0), "m" (op1), "b" ((int)op2), "c" ((int)(op2 >> 32)));
  878 + printf("cmpxchg8b: op0=%016llx op1=%016llx CC=%02x\n",
  879 + op0, op1, eflags & CC_Z);
  880 + }
  881 + }
854 } 882 }
855 883
856 /**********************************************/ 884 /**********************************************/