csst.c (973B)
1 #include <stdint.h> 2 #include <unistd.h> 3 4 int main(void) 5 { 6 uint64_t parmlist[] __attribute__((aligned(16))) = { 7 0xfedcba9876543210ull, 8 0, 9 0x7777777777777777ull, 10 0, 11 }; 12 uint64_t op1 = 0x0123456789abcdefull; 13 uint64_t op2 = 0; 14 uint64_t op3 = op1; 15 uint64_t cc; 16 17 asm volatile( 18 " lghi %%r0,%[flags]\n" 19 " la %%r1,%[parmlist]\n" 20 " csst %[op1],%[op2],%[op3]\n" 21 " ipm %[cc]\n" 22 : [op1] "+m" (op1), 23 [op2] "+m" (op2), 24 [op3] "+r" (op3), 25 [cc] "=r" (cc) 26 : [flags] "K" (0x0301), 27 [parmlist] "m" (parmlist) 28 : "r0", "r1", "cc", "memory"); 29 cc = (cc >> 28) & 3; 30 if (cc) { 31 write(1, "bad cc\n", 7); 32 return 1; 33 } 34 if (op1 != parmlist[0]) { 35 write(1, "bad op1\n", 8); 36 return 1; 37 } 38 if (op2 != parmlist[2]) { 39 write(1, "bad op2\n", 8); 40 return 1; 41 } 42 return 0; 43 }