diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-07-04 10:12:32 +0200 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2023-07-10 15:34:24 +0200 |
| commit | f5c2ae7134e388cd543fa0383191a30ea07d272b (patch) | |
| tree | e000e9267262d47eeddfd0983d8f7c65f1e6834f | |
| parent | 349372ff9e3e7c047e258383f061a8617f66adc3 (diff) | |
tests/tcg/s390x: Test EPSW
Add a small test to prevent regressions.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230704081506.276055-9-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
| -rw-r--r-- | tests/tcg/s390x/Makefile.target | 1 | ||||
| -rw-r--r-- | tests/tcg/s390x/epsw.c | 23 |
2 files changed, 24 insertions, 0 deletions
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index 85abfbb98c..2ef22c88d9 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -36,6 +36,7 @@ TESTS+=rxsbg TESTS+=ex-relative-long TESTS+=ex-branch TESTS+=mxdb +TESTS+=epsw cdsg: CFLAGS+=-pthread cdsg: LDFLAGS+=-pthread diff --git a/tests/tcg/s390x/epsw.c b/tests/tcg/s390x/epsw.c new file mode 100644 index 0000000000..affb1a5e3a --- /dev/null +++ b/tests/tcg/s390x/epsw.c @@ -0,0 +1,23 @@ +/* + * Test the EPSW instruction. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include <assert.h> +#include <stdlib.h> + +int main(void) +{ + unsigned long r1 = 0x1234567887654321UL, r2 = 0x8765432112345678UL; + + asm("cr %[r1],%[r2]\n" /* cc = 1 */ + "epsw %[r1],%[r2]" + : [r1] "+r" (r1), [r2] "+r" (r2) : : "cc"); + + /* Do not check the R and RI bits. */ + r1 &= ~0x40000008UL; + assert(r1 == 0x1234567807051001UL); + assert(r2 == 0x8765432180000000UL); + + return EXIT_SUCCESS; +} |