1 #include <stdio.h>
2 #include <config.h>
3
4 double foo = -1.0;
5 double FRT1;
6 double FRT2;
7
8 #ifdef HAS_ISA_2_07
9
10 /* b0 may be non-zero in lwarx/ldarx Power6 instrs */
test_reservation()11 void test_reservation()
12 {
13
14 unsigned RT;
15 unsigned base;
16 unsigned offset;
17 unsigned arrB[] = { 0x00112233U, 0x44556677U, 0x8899aabbU, 0xccddeeffU };
18 int arrH[] __attribute__ ((aligned (2))) = { 0xdeadbeef, 0xbad0beef, 0xbeefdead, 0xbeef0bad };
19
20 /* The lbarx and lharx instructions were "phased in" in ISA 2.06. That
21 * means it they may show up in some implementations but not others. They
22 * are in all ISA 2.08 implementations.
23 */
24 base = (unsigned) &arrB;
25 offset = ((unsigned ) &arrB[1]) - base;
26 __asm__ volatile ("ori 20, %0, 0"::"r" (base));
27 __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
28 __asm__ volatile ("lbarx %0, 20, 21, 1":"=r" (RT));
29 printf("lbarx => 0x%x\n", RT);
30
31 base = (unsigned) &arrH;
32 offset = ((unsigned) &arrH[1]) - base;
33 __asm__ volatile ("ori 20, %0, 0"::"r" (base));
34 __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
35 __asm__ volatile ("lharx %0, 20, 21, 1":"=r" (RT));
36 printf("lharx => 0x%x\n", RT);
37
38 }
39 #endif
40
main(void)41 int main(void)
42 {
43 #ifdef HAS_ISA_2_07
44 (void) test_reservation();
45 #endif
46
47 return 0;
48 }
49