Ilya Leoshkevich | 6c49f68 | 2023-08-05 01:03:19 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Test the VSTRS instruction. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | #include <stdint.h> |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include "vx.h" |
| 11 | |
| 12 | static inline __attribute__((__always_inline__)) int |
| 13 | vstrs(S390Vector *v1, const S390Vector *v2, const S390Vector *v3, |
| 14 | const S390Vector *v4, const uint8_t m5, const uint8_t m6) |
| 15 | { |
| 16 | int cc; |
| 17 | |
| 18 | asm("vstrs %[v1],%[v2],%[v3],%[v4],%[m5],%[m6]\n" |
| 19 | "ipm %[cc]" |
| 20 | : [v1] "=v" (v1->v) |
| 21 | , [cc] "=r" (cc) |
| 22 | : [v2] "v" (v2->v) |
| 23 | , [v3] "v" (v3->v) |
| 24 | , [v4] "v" (v4->v) |
| 25 | , [m5] "i" (m5) |
| 26 | , [m6] "i" (m6) |
| 27 | : "cc"); |
| 28 | |
| 29 | return (cc >> 28) & 3; |
| 30 | } |
| 31 | |
| 32 | static void test_ignored_match(void) |
| 33 | { |
| 34 | S390Vector v1; |
| 35 | S390Vector v2 = {.d[0] = 0x222000205e410000ULL, .d[1] = 0}; |
| 36 | S390Vector v3 = {.d[0] = 0x205e410000000000ULL, .d[1] = 0}; |
| 37 | S390Vector v4 = {.d[0] = 3, .d[1] = 0}; |
| 38 | |
| 39 | assert(vstrs(&v1, &v2, &v3, &v4, 0, 2) == 1); |
| 40 | assert(v1.d[0] == 16); |
| 41 | assert(v1.d[1] == 0); |
| 42 | } |
| 43 | |
| 44 | static void test_empty_needle(void) |
| 45 | { |
| 46 | S390Vector v1; |
| 47 | S390Vector v2 = {.d[0] = 0x5300000000000000ULL, .d[1] = 0}; |
| 48 | S390Vector v3 = {.d[0] = 0, .d[1] = 0}; |
| 49 | S390Vector v4 = {.d[0] = 0, .d[1] = 0}; |
| 50 | |
| 51 | assert(vstrs(&v1, &v2, &v3, &v4, 0, 0) == 2); |
| 52 | assert(v1.d[0] == 0); |
| 53 | assert(v1.d[1] == 0); |
| 54 | } |
| 55 | |
| 56 | static void test_max_length(void) |
| 57 | { |
| 58 | S390Vector v1; |
| 59 | S390Vector v2 = {.d[0] = 0x1122334455667700ULL, .d[1] = 0}; |
| 60 | S390Vector v3 = {.d[0] = 0, .d[1] = 0}; |
| 61 | S390Vector v4 = {.d[0] = 16, .d[1] = 0}; |
| 62 | |
| 63 | assert(vstrs(&v1, &v2, &v3, &v4, 0, 0) == 3); |
| 64 | assert(v1.d[0] == 7); |
| 65 | assert(v1.d[1] == 0); |
| 66 | } |
| 67 | |
| 68 | static void test_no_match(void) |
| 69 | { |
| 70 | S390Vector v1; |
| 71 | S390Vector v2 = {.d[0] = 0xffffff000fffff00ULL, .d[1] = 0x82b}; |
| 72 | S390Vector v3 = {.d[0] = 0xfffffffeffffffffULL, |
| 73 | .d[1] = 0xffffffff00000000ULL}; |
| 74 | S390Vector v4 = {.d[0] = 11, .d[1] = 0}; |
| 75 | |
| 76 | assert(vstrs(&v1, &v2, &v3, &v4, 0, 2) == 1); |
| 77 | assert(v1.d[0] == 16); |
| 78 | assert(v1.d[1] == 0); |
| 79 | } |
| 80 | |
| 81 | int main(void) |
| 82 | { |
| 83 | test_ignored_match(); |
| 84 | test_empty_needle(); |
| 85 | test_max_length(); |
| 86 | test_no_match(); |
| 87 | return EXIT_SUCCESS; |
| 88 | } |