89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
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/*
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* Test the VSTRS instruction.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <assert.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "vx.h"
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static inline __attribute__((__always_inline__)) int
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vstrs(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
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const S390Vector *v4, const uint8_t m5, const uint8_t m6)
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{
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int cc;
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asm("vstrs %[v1],%[v2],%[v3],%[v4],%[m5],%[m6]\n"
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"ipm %[cc]"
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: [v1] "=v" (v1->v)
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, [cc] "=r" (cc)
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: [v2] "v" (v2->v)
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, [v3] "v" (v3->v)
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, [v4] "v" (v4->v)
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, [m5] "i" (m5)
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, [m6] "i" (m6)
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: "cc");
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return (cc >> 28) & 3;
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}
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static void test_ignored_match(void)
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{
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S390Vector v1;
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S390Vector v2 = {.d[0] = 0x222000205e410000ULL, .d[1] = 0};
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S390Vector v3 = {.d[0] = 0x205e410000000000ULL, .d[1] = 0};
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S390Vector v4 = {.d[0] = 3, .d[1] = 0};
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assert(vstrs(&v1, &v2, &v3, &v4, 0, 2) == 1);
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assert(v1.d[0] == 16);
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assert(v1.d[1] == 0);
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}
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static void test_empty_needle(void)
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{
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S390Vector v1;
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S390Vector v2 = {.d[0] = 0x5300000000000000ULL, .d[1] = 0};
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S390Vector v3 = {.d[0] = 0, .d[1] = 0};
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S390Vector v4 = {.d[0] = 0, .d[1] = 0};
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assert(vstrs(&v1, &v2, &v3, &v4, 0, 0) == 2);
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assert(v1.d[0] == 0);
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assert(v1.d[1] == 0);
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}
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static void test_max_length(void)
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{
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S390Vector v1;
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S390Vector v2 = {.d[0] = 0x1122334455667700ULL, .d[1] = 0};
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S390Vector v3 = {.d[0] = 0, .d[1] = 0};
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S390Vector v4 = {.d[0] = 16, .d[1] = 0};
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assert(vstrs(&v1, &v2, &v3, &v4, 0, 0) == 3);
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assert(v1.d[0] == 7);
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assert(v1.d[1] == 0);
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}
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static void test_no_match(void)
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{
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S390Vector v1;
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S390Vector v2 = {.d[0] = 0xffffff000fffff00ULL, .d[1] = 0x82b};
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S390Vector v3 = {.d[0] = 0xfffffffeffffffffULL,
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.d[1] = 0xffffffff00000000ULL};
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S390Vector v4 = {.d[0] = 11, .d[1] = 0};
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assert(vstrs(&v1, &v2, &v3, &v4, 0, 2) == 1);
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assert(v1.d[0] == 16);
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assert(v1.d[1] == 0);
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}
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int main(void)
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{
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test_ignored_match();
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test_empty_needle();
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test_max_length();
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test_no_match();
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return EXIT_SUCCESS;
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}
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