From 93af6e0a61f45fe0704e27f04e759924afa59e6e Mon Sep 17 00:00:00 2001 From: Ilya Leoshkevich Date: Sat, 5 Aug 2023 01:55:34 +0200 Subject: [PATCH] tests/tcg/s390x: Test VSTL Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich Message-Id: <20230804235624.263260-2-iii@linux.ibm.com> Signed-off-by: Thomas Huth --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/vstl.c | 37 +++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) create mode 100644 tests/tcg/s390x/vstl.c diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index 1fc9809907..e280c8c280 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -59,6 +59,7 @@ Z13_TESTS=vistr Z13_TESTS+=lcbb Z13_TESTS+=locfhr Z13_TESTS+=vcksm +Z13_TESTS+=vstl $(Z13_TESTS): CFLAGS+=-march=z13 -O2 TESTS+=$(Z13_TESTS) diff --git a/tests/tcg/s390x/vstl.c b/tests/tcg/s390x/vstl.c new file mode 100644 index 0000000000..bece952c7e --- /dev/null +++ b/tests/tcg/s390x/vstl.c @@ -0,0 +1,37 @@ +/* + * Test the VSTL instruction. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include +#include +#include "vx.h" + +static inline void vstl(S390Vector *v1, void *db2, size_t r3) +{ + asm("vstl %[v1],%[r3],%[db2]" + : [db2] "=Q" (*(char *)db2) + : [v1] "v" (v1->v), [r3] "r" (r3) + : "memory"); +} + +int main(void) +{ + uint64_t buf[3] = {0x1122334455667788ULL, 0x99aabbccddeeffULL, + 0x5a5a5a5a5a5a5a5aULL}; + S390Vector v = {.d[0] = 0x1234567887654321ULL, + .d[1] = 0x9abcdef00fedcba9ULL}; + + vstl(&v, buf, 0); + assert(buf[0] == 0x1222334455667788ULL); + + vstl(&v, buf, 1); + assert(buf[0] == 0x1234334455667788ULL); + + vstl(&v, buf, -1); + assert(buf[0] == 0x1234567887654321ULL); + assert(buf[1] == 0x9abcdef00fedcba9ULL); + assert(buf[2] == 0x5a5a5a5a5a5a5a5aULL); + + return EXIT_SUCCESS; +}