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#include <stdint.h>
#include <unistd.h>
int main(void)
{
char op1[] = "hello";
char op2[256];
uint64_t r1 = 0xffffffffffffffffull;
uint64_t r2 = 0xffffffffffffffffull;
uint64_t cc;
int i;
for (i = 0; i < 256; i++) {
if (i == 0) {
op2[i] = 0xaa;
} else {
op2[i] = 0;
}
}
asm volatile(
" j 2f\n"
"1: trt 0(1,%[op1]),%[op2]\n"
"2: exrl %[op1_len],1b\n"
" lgr %[r1],%%r1\n"
" lgr %[r2],%%r2\n"
" ipm %[cc]\n"
: [r1] "+r" (r1),
[r2] "+r" (r2),
[cc] "=r" (cc)
: [op1] "a" (&op1),
[op1_len] "a" (5),
[op2] "Q" (op2)
: "r1", "r2", "cc");
cc = (cc >> 28) & 3;
if (cc != 2) {
write(1, "bad cc\n", 7);
return 1;
}
if ((char *)r1 != &op1[5]) {
write(1, "bad r1\n", 7);
return 1;
}
if (r2 != 0xffffffffffffffaaull) {
write(1, "bad r2\n", 7);
return 1;
}
return 0;
}
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