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Diffstat (limited to '')
-rw-r--r-- | tools/testing/selftests/vDSO/vdso_test.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/tools/testing/selftests/vDSO/vdso_test.c b/tools/testing/selftests/vDSO/vdso_test.c deleted file mode 100644 index 719d5a6bd664..000000000000 --- a/tools/testing/selftests/vDSO/vdso_test.c +++ /dev/null @@ -1,68 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * vdso_test.c: Sample code to test parse_vdso.c - * Copyright (c) 2014 Andy Lutomirski - * - * Compile with: - * gcc -std=gnu99 vdso_test.c parse_vdso.c - * - * Tested on x86, 32-bit and 64-bit. It may work on other architectures, too. - */ - -#include <stdint.h> -#include <elf.h> -#include <stdio.h> -#include <sys/auxv.h> -#include <sys/time.h> - -#include "../kselftest.h" - -extern void *vdso_sym(const char *version, const char *name); -extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); -extern void vdso_init_from_auxv(void *auxv); - -/* - * ARM64's vDSO exports its gettimeofday() implementation with a different - * name and version from other architectures, so we need to handle it as - * a special case. - */ -#if defined(__aarch64__) -const char *version = "LINUX_2.6.39"; -const char *name = "__kernel_gettimeofday"; -#else -const char *version = "LINUX_2.6"; -const char *name = "__vdso_gettimeofday"; -#endif - -int main(int argc, char **argv) -{ - unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR); - if (!sysinfo_ehdr) { - printf("AT_SYSINFO_EHDR is not present!\n"); - return KSFT_SKIP; - } - - vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR)); - - /* Find gettimeofday. */ - typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz); - gtod_t gtod = (gtod_t)vdso_sym(version, name); - - if (!gtod) { - printf("Could not find %s\n", name); - return KSFT_SKIP; - } - - struct timeval tv; - long ret = gtod(&tv, 0); - - if (ret == 0) { - printf("The time is %lld.%06lld\n", - (long long)tv.tv_sec, (long long)tv.tv_usec); - } else { - printf("%s failed\n", name); - return KSFT_FAIL; - } - - return 0; -} |