| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | /* WHILEWR / WHILERW regression test */ |
| 3 | |
| 4 | #include <sys/prctl.h> |
| 5 | #include <assert.h> |
| 6 | |
| 7 | int main(int argc, char **argv) |
| 8 | { |
| 9 | unsigned short p; |
| 10 | int set_vl_ret; |
| 11 | |
| 12 | set_vl_ret = prctl(PR_SVE_SET_VL, 16, 0, 0, 0, 0); |
| 13 | assert(set_vl_ret == 16); |
| 14 | |
| 15 | p = 0xdead; |
| 16 | asm("whilewr p0.s, %0, %1\n\t" |
| 17 | "str p0, [%2]" |
| 18 | : : "r"(8), "r"(11), "r"(&p) : "memory", "p0"); |
| 19 | assert(p == 0x1111); |
| 20 | |
| 21 | p = 0xdead; |
| 22 | asm("whilerw p0.s, %0, %1\n\t" |
| 23 | "str p0, [%2]" |
| 24 | : : "r"(8), "r"(11), "r"(&p) : "memory", "p0"); |
| 25 | assert(p == 0x1111); |
| 26 | |
| 27 | return 0; |
| 28 | } |