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tests/tcg/s390x: Test VREP

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Add a small test to prevent regressions.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230807163459.849766-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Ilya Leoshkevich 2023-08-07 18:34:32 +02:00 committed by Thomas Huth
parent 23e87d419f
commit 024d7cafd9
2 changed files with 82 additions and 0 deletions
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1
tests/tcg/s390x/Makefile.target
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@ -60,6 +60,7 @@ Z13_TESTS+=lcbb
Z13_TESTS+=locfhr
Z13_TESTS+=vcksm
Z13_TESTS+=vstl
Z13_TESTS+=vrep
$(Z13_TESTS): CFLAGS+=-march=z13 -O2
TESTS+=$(Z13_TESTS)

81
tests/tcg/s390x/vrep.c Normal file
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@ -0,0 +1,81 @@
/*
* Test the VREP instruction.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <assert.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "vx.h"
static void handle_sigill(int sig, siginfo_t *info, void *ucontext)
{
mcontext_t *mcontext = &((ucontext_t *)ucontext)->uc_mcontext;
char *insn = (char *)info->si_addr;
if (insn[0] != 0xe7 || insn[5] != 0x4d) {
_exit(EXIT_FAILURE);
}
mcontext->gregs[2] = SIGILL;
}
static inline __attribute__((__always_inline__)) unsigned long
vrep(S390Vector *v1, const S390Vector *v3, const uint16_t i2, const uint8_t m4)
{
register unsigned long sig asm("r2") = -1;
asm("vrep %[v1],%[v3],%[i2],%[m4]\n"
: [v1] "=v" (v1->v)
, [sig] "+r" (sig)
: [v3] "v" (v3->v)
, [i2] "i" (i2)
, [m4] "i" (m4));
return sig;
}
int main(int argc, char *argv[])
{
S390Vector v3 = {.d[0] = 1, .d[1] = 2};
struct sigaction act;
S390Vector v1;
int err;
memset(&act, 0, sizeof(act));
act.sa_sigaction = handle_sigill;
act.sa_flags = SA_SIGINFO;
err = sigaction(SIGILL, &act, NULL);
assert(err == 0);
assert(vrep(&v1, &v3, 7, 0) == -1);
assert(v1.d[0] == 0x0101010101010101ULL);
assert(v1.d[1] == 0x0101010101010101ULL);
assert(vrep(&v1, &v3, 7, 1) == -1);
assert(v1.d[0] == 0x0002000200020002ULL);
assert(v1.d[1] == 0x0002000200020002ULL);
assert(vrep(&v1, &v3, 1, 2) == -1);
assert(v1.d[0] == 0x0000000100000001ULL);
assert(v1.d[1] == 0x0000000100000001ULL);
assert(vrep(&v1, &v3, 1, 3) == -1);
assert(v1.d[0] == 2);
assert(v1.d[1] == 2);
assert(vrep(&v1, &v3, 0x10, 0) == SIGILL);
assert(vrep(&v1, &v3, 0x101, 0) == SIGILL);
assert(vrep(&v1, &v3, 0x8, 1) == SIGILL);
assert(vrep(&v1, &v3, 0x108, 1) == SIGILL);
assert(vrep(&v1, &v3, 0x4, 2) == SIGILL);
assert(vrep(&v1, &v3, 0x104, 2) == SIGILL);
assert(vrep(&v1, &v3, 0x2, 3) == SIGILL);
assert(vrep(&v1, &v3, 0x102, 3) == SIGILL);
return EXIT_SUCCESS;
}