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tests/tcg/s390x: Test LOCFHR

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Add a small test to prevent regressions.

Cc: qemu-stable@nongnu.org
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230526181240.1425579-5-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 230976232f)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Ilya Leoshkevich 2023-05-26 20:12:40 +02:00 committed by Michael Tokarev
parent cc271aa410
commit 82fc148344
2 changed files with 30 additions and 0 deletions
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1
tests/tcg/s390x/Makefile.target
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@ -27,6 +27,7 @@ TESTS+=noexec
Z13_TESTS=vistr Z13_TESTS=vistr
Z13_TESTS+=lcbb Z13_TESTS+=lcbb
Z13_TESTS+=locfhr
$(Z13_TESTS): CFLAGS+=-march=z13 -O2 $(Z13_TESTS): CFLAGS+=-march=z13 -O2
TESTS+=$(Z13_TESTS) TESTS+=$(Z13_TESTS)

29
tests/tcg/s390x/locfhr.c Normal file
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@ -0,0 +1,29 @@
/*
* Test the LOCFHR instruction.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <assert.h>
#include <stdlib.h>
static inline __attribute__((__always_inline__)) long
locfhr(long r1, long r2, int m3, int cc)
{
cc <<= 28;
asm("spm %[cc]\n"
"locfhr %[r1],%[r2],%[m3]\n"
: [r1] "+r" (r1)
: [cc] "r" (cc), [r2] "r" (r2), [m3] "i" (m3)
: "cc");
return r1;
}
int main(void)
{
assert(locfhr(0x1111111122222222, 0x3333333344444444, 8, 0) ==
0x3333333322222222);
assert(locfhr(0x5555555566666666, 0x7777777788888888, 11, 1) ==
0x5555555566666666);
return EXIT_SUCCESS;
}