glibc/elf/libc-dl-profstub.c
Adhemerval Zanella 55f41ef8de elf: Remove LD_PROFILE for static binaries
The _dl_non_dynamic_init does not parse LD_PROFILE, which does not
enable profile for dlopen objects.  Since dlopen is deprecated for
static objects, it is better to remove the support.

It also allows to trim down libc.a of profile support.

Checked on x86_64-linux-gnu.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2023-11-21 16:15:42 -03:00

41 lines
1.3 KiB
C

/* Helper definitions for profiling of shared libraries.
Copyright (C) 1998-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <elf.h>
#include <ldsodefs.h>
/* This is the map for the shared object we profile. It is defined here
only because we test for this value being NULL or not. */
void
_dl_mcount_wrapper (void *selfpc)
{
GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc);
}
void
_dl_mcount_wrapper_check (void *selfpc)
{
if (GL(dl_profile_map) != NULL)
GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc);
}
libc_hidden_def (_dl_mcount_wrapper_check)