glibc/sysdeps/unix/sysv/linux/arm/profil-counter.h
Adhemerval Zanella 08d57105bb linux: Make profil_counter a compat_symbol (BZ#17726)
As indicated by Joseph's comment on BZ#17726, this symbol is most
likely a historical ABI accident.  This patch make it on both arm
and sparc ABIs a compat_symbol.

Checked against a build arm-linux-gnueabihf, sparcv9-linux-gnu, adn
sparc64-linux-gnu to see if the symbol is still present.

	* gmon/Versions (libc) [GLIBC_2.31]: New entry.
	* sysdeps/unix/sysv/linux/arm/profil-counter.h (profil_counter):
	Make a compat_symbol.
	* sysdeps/unix/sysv/linux/sparc/profil-counter.h
	(__profil_counter_global): Likewise.
2019-08-23 11:30:56 -03:00

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1.4 KiB
C

/* Low-level statistical profiling support function. Linux/ARM version.
Copyright (C) 1996-2019 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
<http://www.gnu.org/licenses/>. */
#include <signal.h>
#include <sigcontextinfo.h>
void
__profil_counter (int signo, siginfo_t *_si, void *scp)
{
profil_count (sigcontext_get_pc (scp));
/* This is a hack to prevent the compiler from implementing the
above function call as a sibcall. The sibcall would overwrite
the signal context. */
asm volatile ("");
}
#ifndef __profil_counter
# include <shlib-compat.h>
# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_31)
compat_symbol (libc, __profil_counter, profil_counter, GLIBC_2_0);
# endif
#endif