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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 f5983d706c..99d544859f 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