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authorUlrich Drepper <drepper@redhat.com>2000-02-28 21:16:38 +0000
committerUlrich Drepper <drepper@redhat.com>2000-02-28 21:16:38 +0000
commita808d541c6fb36db381923c52040855602e9fd83 (patch)
tree07bbe429e74c8dc139eaa7329809b77500182e79 /bits/dlfcn.h
parent46b5798928ff48010c151ddcca258e65710d6194 (diff)
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Update.
2000-02-28 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/start.c: Initialize __errno and add comment explaining why. Remove K&R compatibility. * sysdeps/powerpc/fpu/s_isnan.c: Avoid using asm statement to declare aliases. * sysdeps/powerpc/Makefile: Always pass flags to compile for ppc and not rs6000. [$(subdir)=misc] (sysdep_routines): Add gprsave0, gprrest0, gprsave1 , and gprrest1. Don't pass special flags to compiler for init and gmon-start if this is no ELF platform. * sysdeps/mach/hurd/bits/statfs.h: Define _STATFS_F_NAMELEN. * sysdeps/unix/sysv/linux/bits/statfs.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/statfs.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/statfs.h: Likewise. * sysdeps/posix/fpathconf.c: Don't unconditionally use f_namelen in statfs. Check feature macro and use f_name_max or NAME_MAX instead. * sysdeps/posix/pathconf.c: Likewise. * dlfcn/dlfcn.h: Remove DL_CALL_FCT definition here. * sysdeps/generic/bits/dlfcn.h: Define DL_CALL_FCT here. * sysdeps/mips/bits/dlfcn.h: Define DL_CALL_FCT here. * iconv/skeleton.c: If DL_CALL_FCT is not yet defined, add dumy definition here. * sysdeps/generic/libc-start.c: Fix typo in comment. * include/set-hooks.h: Allow systems to not define symbol_set_define. * configure.in: Unify machine names rs6000 and powerpc.
Diffstat (limited to 'bits/dlfcn.h')
-rw-r--r--bits/dlfcn.h20
1 files changed, 19 insertions, 1 deletions
diff --git a/bits/dlfcn.h b/bits/dlfcn.h
index f5983d7..99d5448 100644
--- a/bits/dlfcn.h
+++ b/bits/dlfcn.h
@@ -1,5 +1,5 @@
/* System dependent definitions for run-time dynamic loading.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000 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
@@ -35,3 +35,21 @@
The implementation does this by default and so we can define the
value to zero. */
#define RTLD_LOCAL 0
+
+#ifdef __USE_GNU
+/* To support profiling of shared objects it is a good idea to call
+ the function found using `dlsym' using the following macro since
+ these calls do not use the PLT. But this would mean the dynamic
+ loader has no chance to find out when the function is called. The
+ macro applies the necessary magic so that profiling is possible.
+ Rewrite
+ foo = (*fctp) (arg1, arg2);
+ into
+ foo = DL_CALL_FCT (fctp, (arg1, arg2));
+*/
+# define DL_CALL_FCT(fctp, args) \
+ (_dl_mcount_wrapper_check (fctp), (*(fctp)) args)
+
+/* This function calls the profiling functions. */
+extern void _dl_mcount_wrapper_check (void *__selfpc) __THROW;
+#endif