| 1 | /* |
| 2 | * Test the VSTL instruction. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | #include <stdlib.h> |
| 8 | #include "vx.h" |
| 9 | |
| 10 | static inline void vstl(S390Vector *v1, void *db2, size_t r3) |
| 11 | { |
| 12 | asm("vstl %[v1],%[r3],%[db2]" |
| 13 | : [db2] "=Q" (*(char *)db2) |
| 14 | : [v1] "v" (v1->v), [r3] "r" (r3) |
| 15 | : "memory"); |
| 16 | } |
| 17 | |
| 18 | int main(void) |
| 19 | { |
| 20 | uint64_t buf[3] = {0x1122334455667788ULL, 0x99aabbccddeeffULL, |
| 21 | 0x5a5a5a5a5a5a5a5aULL}; |
| 22 | S390Vector v = {.d[0] = 0x1234567887654321ULL, |
| 23 | .d[1] = 0x9abcdef00fedcba9ULL}; |
| 24 | |
| 25 | vstl(&v, buf, 0); |
| 26 | assert(buf[0] == 0x1222334455667788ULL); |
| 27 | |
| 28 | vstl(&v, buf, 1); |
| 29 | assert(buf[0] == 0x1234334455667788ULL); |
| 30 | |
| 31 | vstl(&v, buf, -1); |
| 32 | assert(buf[0] == 0x1234567887654321ULL); |
| 33 | assert(buf[1] == 0x9abcdef00fedcba9ULL); |
| 34 | assert(buf[2] == 0x5a5a5a5a5a5a5a5aULL); |
| 35 | |
| 36 | return EXIT_SUCCESS; |
| 37 | } |