93af6e0a61
Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20230804235624.263260-2-iii@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
38 lines
899 B
C
38 lines
899 B
C
/*
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* Test the VSTL 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 <stdlib.h>
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#include "vx.h"
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static inline void vstl(S390Vector *v1, void *db2, size_t r3)
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{
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asm("vstl %[v1],%[r3],%[db2]"
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: [db2] "=Q" (*(char *)db2)
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: [v1] "v" (v1->v), [r3] "r" (r3)
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: "memory");
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}
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int main(void)
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{
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uint64_t buf[3] = {0x1122334455667788ULL, 0x99aabbccddeeffULL,
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0x5a5a5a5a5a5a5a5aULL};
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S390Vector v = {.d[0] = 0x1234567887654321ULL,
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.d[1] = 0x9abcdef00fedcba9ULL};
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vstl(&v, buf, 0);
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assert(buf[0] == 0x1222334455667788ULL);
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vstl(&v, buf, 1);
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assert(buf[0] == 0x1234334455667788ULL);
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vstl(&v, buf, -1);
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assert(buf[0] == 0x1234567887654321ULL);
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assert(buf[1] == 0x9abcdef00fedcba9ULL);
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assert(buf[2] == 0x5a5a5a5a5a5a5a5aULL);
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return EXIT_SUCCESS;
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}
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