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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/powerpc/math/vmx_syscall.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/powerpc/math/vmx_syscall.c')
-rw-r--r-- | tools/testing/selftests/powerpc/math/vmx_syscall.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/math/vmx_syscall.c b/tools/testing/selftests/powerpc/math/vmx_syscall.c new file mode 100644 index 000000000..03c78dfe3 --- /dev/null +++ b/tools/testing/selftests/powerpc/math/vmx_syscall.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2015, Cyril Bur, IBM Corp. + * + * This test attempts to see if the VMX registers change across a syscall (fork). + */ + +#include <altivec.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/syscall.h> +#include <sys/time.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/wait.h> +#include "utils.h" + +vector int varray[] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10,11,12}, + {13,14,15,16},{17,18,19,20},{21,22,23,24}, + {25,26,27,28},{29,30,31,32},{33,34,35,36}, + {37,38,39,40},{41,42,43,44},{45,46,47,48}}; + +extern int test_vmx(vector int *varray, pid_t *pid); + +int vmx_syscall(void) +{ + pid_t fork_pid; + int i; + int ret; + int child_ret; + for (i = 0; i < 1000; i++) { + /* test_vmx will fork() */ + ret = test_vmx(varray, &fork_pid); + if (fork_pid == -1) + return -1; + if (fork_pid == 0) + exit(ret); + waitpid(fork_pid, &child_ret, 0); + if (ret || child_ret) + return 1; + } + + return 0; +} + +int test_vmx_syscall(void) +{ + /* + * Setup an environment with much context switching + */ + pid_t pid2; + pid_t pid; + int ret; + int child_ret; + + // vcmpequd used in vmx_asm.S is v2.07 + SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_2_07)); + + pid = fork(); + FAIL_IF(pid == -1); + + pid2 = fork(); + ret = vmx_syscall(); + /* Can't FAIL_IF(pid2 == -1); because we've already forked */ + if (pid2 == -1) { + /* + * Couldn't fork, ensure child_ret is set and is a fail + */ + ret = child_ret = 1; + } else { + if (pid2) + waitpid(pid2, &child_ret, 0); + else + exit(ret); + } + + ret |= child_ret; + + if (pid) + waitpid(pid, &child_ret, 0); + else + exit(ret); + + FAIL_IF(ret || child_ret); + return 0; +} + +int main(int argc, char *argv[]) +{ + return test_harness(test_vmx_syscall, "vmx_syscall"); + +} |