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aarch64: Implement support for elf_aux_info(3) on FreeBSD and OpenBSD

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FreeBSD 12.0+, OpenBSD -current and what will be OpenBSD 7.6 support
elf_aux_info(3).

Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Brad Smith 2024-09-09 06:34:42 -04:00 committed by Paul B Mahol
parent f8113805a1
commit 996a8e32b4
3 changed files with 11 additions and 2 deletions
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2
configure vendored
View File

@ -2361,6 +2361,7 @@ SYSTEM_FUNCS="
clock_gettime
closesocket
CommandLineToArgvW
elf_aux_info
fcntl
getaddrinfo
getauxval
@ -6558,6 +6559,7 @@ check_func_headers mach/mach_time.h mach_absolute_time
check_func_headers stdlib.h getenv
check_func_headers sys/stat.h lstat
check_func_headers sys/auxv.h getauxval
check_func_headers sys/auxv.h elf_aux_info
check_func_headers sys/sysctl.h sysctlbyname
check_func_headers windows.h GetModuleHandle

2
libavutil/aarch64/cpu.c
View File

@ -20,7 +20,7 @@
#include "libavutil/cpu_internal.h"
#include "config.h"
#if (defined(__linux__) || defined(__ANDROID__)) && HAVE_GETAUXVAL
#if HAVE_GETAUXVAL || HAVE_ELF_AUX_INFO
#include <stdint.h>
#include <sys/auxv.h>

9
libavutil/cpu.c
View File

@ -49,7 +49,7 @@
#include <unistd.h>
#endif
#if HAVE_GETAUXVAL
#if HAVE_GETAUXVAL || HAVE_ELF_AUX_INFO
#include <sys/auxv.h>
#endif
@ -291,6 +291,13 @@ unsigned long ff_getauxval(unsigned long type)
{
#if HAVE_GETAUXVAL
return getauxval(type);
#elif HAVE_ELF_AUX_INFO
unsigned long aux = 0;
int ret = elf_aux_info(type, &aux, sizeof(aux));
if (ret != 0) {
errno = ret;
}
return aux;
#else
errno = ENOSYS;
return 0;