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| author | Ulrich Drepper <drepper@redhat.com> | 2002-10-11 18:56:32 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2002-10-11 18:56:32 +0000 |
| commit | bd97565d089431795f0ee0546a08a0bafd39903a (patch) | |
| tree | c9a049675aa4bed62b72fb2558e34705c15a77ae /sysdeps/unix/sysv | |
| parent | 5232c939149fc6ad1af73c7faa52e0d251417f51 (diff) | |
| download | glibc-bd97565d089431795f0ee0546a08a0bafd39903a.tar.gz glibc-bd97565d089431795f0ee0546a08a0bafd39903a.tar.xz glibc-bd97565d089431795f0ee0546a08a0bafd39903a.zip | |
(profil_counter): Add hack to prevent the compiler from clobbering the signal context.
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/profil-counter.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/profil-counter.h b/sysdeps/unix/sysv/linux/i386/profil-counter.h index 9af0cbbde4..d592a7bd68 100644 --- a/sysdeps/unix/sysv/linux/i386/profil-counter.h +++ b/sysdeps/unix/sysv/linux/i386/profil-counter.h @@ -1,5 +1,5 @@ /* Low-level statistical profiling support function. Linux/i386 version. - Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998, 2002 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 @@ -21,7 +21,12 @@ #include <sigcontextinfo.h> static void -profil_counter (int signo, SIGCONTEXT scp) +profil_counter (int signo, const SIGCONTEXT scp) { profil_count ((void *) 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 (""); } |