diff options
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/bits/dlfcn.h | 20 | ||||
| -rw-r--r-- | sysdeps/generic/libc-start.c | 4 |
2 files changed, 21 insertions, 3 deletions
diff --git a/sysdeps/generic/bits/dlfcn.h b/sysdeps/generic/bits/dlfcn.h index f5983d706c..99d544859f 100644 --- a/sysdeps/generic/bits/dlfcn.h +++ b/sysdeps/generic/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 diff --git a/sysdeps/generic/libc-start.c b/sysdeps/generic/libc-start.c index 7c0bc58a2a..77f730a027 100644 --- a/sysdeps/generic/libc-start.c +++ b/sysdeps/generic/libc-start.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. +/* Copyright (C) 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 @@ -103,7 +103,7 @@ check_one_fd (int fd, int mode) about to start does not accidently use this descriptor. */ int nullfd = __libc_open (_PATH_DEVNULL, mode); if (nullfd == -1) - /* We cannot even given an error message here since it would + /* We cannot even give an error message here since it would run into the same problems. */ abort (); } |