diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-05-26 20:12:38 +0200 |
|---|---|---|
| committer | Michael Tokarev <mjt@tls.msk.ru> | 2023-06-07 11:52:17 +0300 |
| commit | 242efaca9e12d2dbc4dbfae6a0718e978dfa15b1 (patch) | |
| tree | 987a90043203d818c63bc394e01d82e978f84f7a /tests/tcg | |
| parent | 347714a28cc5316aab31e2a0f3758ec870cea86f (diff) | |
tests/tcg/s390x: Test LCBB
Add a test to prevent regressions.
Cc: qemu-stable@nongnu.org
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230526181240.1425579-3-iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 05d000fb4dcac4bc02ffa08fcf14b51683b878f6)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'tests/tcg')
| -rw-r--r-- | tests/tcg/s390x/Makefile.target | 1 | ||||
| -rw-r--r-- | tests/tcg/s390x/lcbb.c | 51 |
2 files changed, 52 insertions, 0 deletions
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index 07fcc6d0ce..24576fda22 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -26,6 +26,7 @@ TESTS+=branch-relative-long TESTS+=noexec Z13_TESTS=vistr +Z13_TESTS+=lcbb $(Z13_TESTS): CFLAGS+=-march=z13 -O2 TESTS+=$(Z13_TESTS) diff --git a/tests/tcg/s390x/lcbb.c b/tests/tcg/s390x/lcbb.c new file mode 100644 index 0000000000..8d368e0998 --- /dev/null +++ b/tests/tcg/s390x/lcbb.c @@ -0,0 +1,51 @@ +/* + * Test the LCBB instruction. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include <assert.h> +#include <stdlib.h> + +static inline __attribute__((__always_inline__)) void +lcbb(long *r1, void *dxb2, int m3, int *cc) +{ + asm("lcbb %[r1],%[dxb2],%[m3]\n" + "ipm %[cc]" + : [r1] "+r" (*r1), [cc] "=r" (*cc) + : [dxb2] "R" (*(char *)dxb2), [m3] "i" (m3) + : "cc"); + *cc = (*cc >> 28) & 3; +} + +static char buf[0x1000] __attribute__((aligned(0x1000))); + +static inline __attribute__((__always_inline__)) void +test_lcbb(void *p, int m3, int exp_r1, int exp_cc) +{ + long r1 = 0xfedcba9876543210; + int cc; + + lcbb(&r1, p, m3, &cc); + assert(r1 == (0xfedcba9800000000 | exp_r1)); + assert(cc == exp_cc); +} + +int main(void) +{ + test_lcbb(&buf[0], 0, 16, 0); + test_lcbb(&buf[63], 0, 1, 3); + test_lcbb(&buf[0], 1, 16, 0); + test_lcbb(&buf[127], 1, 1, 3); + test_lcbb(&buf[0], 2, 16, 0); + test_lcbb(&buf[255], 2, 1, 3); + test_lcbb(&buf[0], 3, 16, 0); + test_lcbb(&buf[511], 3, 1, 3); + test_lcbb(&buf[0], 4, 16, 0); + test_lcbb(&buf[1023], 4, 1, 3); + test_lcbb(&buf[0], 5, 16, 0); + test_lcbb(&buf[2047], 5, 1, 3); + test_lcbb(&buf[0], 6, 16, 0); + test_lcbb(&buf[4095], 6, 1, 3); + + return EXIT_SUCCESS; +} |