| Message ID | 20240318202722.20675-2-iii@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2,1/2] target/s390x: Use mutable temporary value for op_ts | expand |
On 3/18/24 10:27, Ilya Leoshkevich wrote: > Add a small test to prevent regressions. > > Signed-off-by: Ilya Leoshkevich<iii@linux.ibm.com> > --- > tests/tcg/s390x/Makefile.target | 1 + > tests/tcg/s390x/ts.c | 35 +++++++++++++++++++++++++++++++++ > 2 files changed, 36 insertions(+) > create mode 100644 tests/tcg/s390x/ts.c Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index e2aba2ec274..a8f86c94498 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -47,6 +47,7 @@ TESTS+=add-logical-with-carry TESTS+=lae TESTS+=cvd TESTS+=cvb +TESTS+=ts cdsg: CFLAGS+=-pthread cdsg: LDFLAGS+=-pthread diff --git a/tests/tcg/s390x/ts.c b/tests/tcg/s390x/ts.c new file mode 100644 index 00000000000..441faf30d98 --- /dev/null +++ b/tests/tcg/s390x/ts.c @@ -0,0 +1,35 @@ +/* + * Test the TEST AND SET instruction. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include <assert.h> +#include <stdlib.h> + +static int ts(char *p) +{ + int cc; + + asm("ts %[p]\n" + "ipm %[cc]" + : [cc] "=r" (cc) + , [p] "+Q" (*p) + : : "cc"); + + return (cc >> 28) & 3; +} + +int main(void) +{ + char c; + + c = 0x80; + assert(ts(&c) == 1); + assert(c == 0xff); + + c = 0x7f; + assert(ts(&c) == 0); + assert(c == 0xff); + + return EXIT_SUCCESS; +}
Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/ts.c | 35 +++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 tests/tcg/s390x/ts.c