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authorUlrich Drepper <drepper@redhat.com>1998-03-08 15:26:29 +0000
committerUlrich Drepper <drepper@redhat.com>1998-03-08 15:26:29 +0000
commit3db52d94e2dcd03925664df6a09e9676ad1f2baf (patch)
treec52e151c8bbe577afba5c1e6a0a084641853ce7f /sysdeps
parenta78de796b7911443b7af40177ee9c33cf69a82e5 (diff)
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Update.
1998-03-08 14:58 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (nisobjdir): Set to path to nis directory. (rpath-link): Add nisobjdir. Patch by Sven Verdoolaege <skimo@kotnet.org>. * elf/Makefile: Pretty print. * elf/dl-lookup.c: Include unistd.h. * elf/dl-runtime.c: Likewise. * localedata/Makefile (test-srcs): Add tst-rpmatch. (distribute): Add tst-rpmatch.sh. (tests): Add tst-rpmatch to dependency list and run tst-rpmatch.sh. New tests for rpmatch function by Jochen Hein <jochen.hein@delphi.central.de>. * localedata/tst-rpmatch.c: New file. * localedata/tst-rpmatch.sh: New file. * localedata/locales/de_DE: Correct yesexpr and noexpr. * localedata/locales/de_AT: Likewise. * posix/getopt.c: Update contact address. * posix/getopt1.c: Pretty print. * sysdeps/generic/libc-start.c: Do most of the initialization now here instead of in start.S. * sysdeps/unix/sysv/linux/libc-start.c: Likewise. * sysdeps/i386/elf/start.S: Remove most of the initialization code. * sysdeps/unix/sysv/linux/i386/profil-counter.h: No need for profil_counter to be public. 1998-03-08 13:06 Tim Waugh <tim@cyberelk.demon.co.uk> * posix/wordexp.c (parse_arith): Now works for negative numbers too. (parse_param): Coded parameter length expansion (${#var}). (parse_param): Handling for "=", "+", "-", and the ":" versions added. (parse_param): Cleaned up (fixed) error handling. * posix/wordexp-test.c: IFS now includes non-whitespace character (comma). Added more tests.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/generic/libc-start.c24
-rw-r--r--sysdeps/i386/elf/start.S51
-rw-r--r--sysdeps/unix/sysv/linux/i386/profil-counter.h4
-rw-r--r--sysdeps/unix/sysv/linux/libc-start.c33
4 files changed, 68 insertions, 44 deletions
diff --git a/sysdeps/generic/libc-start.c b/sysdeps/generic/libc-start.c
index 1241988..d6fd3d3 100644
--- a/sysdeps/generic/libc-start.c
+++ b/sysdeps/generic/libc-start.c
@@ -16,9 +16,29 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#include <stdlib.h>
+#include <unistd.h>
+
int
__libc_start_main (int (*main) (int, char **, char **), int argc,
- char **argv, char **envp)
+ char **argv, void (*init) (void), void (*fini) (void),
+ void (*rtld_fini) (void))
{
- return (*main) (argc, argv, envp);
+ /* Register the destructor of the dynamic linker if there is any. */
+ if (rtld_fini != NULL)
+ atexit (rtld_fini);
+
+ /* Call the initializer of the libc. */
+ __libc_init_first ();
+
+ /* Set the global _environ variable correctly. */
+ __environ = &argv[argc + 1];
+
+ /* Call the initializer of the program. */
+ (*init) ();
+
+ /* Register the destructor of the program. */
+ atexit (fini);
+
+ exit ((*main) (argc, argv, envp));
}
diff --git a/sysdeps/i386/elf/start.S b/sysdeps/i386/elf/start.S
index e8ed204..95f74ed 100644
--- a/sysdeps/i386/elf/start.S
+++ b/sysdeps/i386/elf/start.S
@@ -43,57 +43,32 @@ _start:
the outermost frame obviously. */
xorl %ebp, %ebp
- /* %edx contains the address of the shared library termination
- function, which we will register with `atexit' to be called by
- `exit'. I suspect that on some systems, and when statically
- linked, this will not be set by anything to any function
- pointer; hopefully it will be zero so we don't try to call
- random pointers. */
- testl %edx,%edx
- jz .Lnofini
- pushl %edx
- call atexit
- popl %eax /* Pop value to unused register to remove
- argument from stack. */
-.Lnofini:
-
- /* Do essential libc initialization. In statically linked
- programs under the GNU Hurd, this is what sets up the
- arguments on the stack for the code below. */
- call __libc_init_first
-
- /* Extract the arguments and environment as encoded on the stack
- and set up the arguments for `main': argc, argv, envp. */
+ /* Extract the arguments as encoded on the stack and set up
+ the arguments for `main': argc, argv. envp will be determined
+ later in __libc_start_main. */
popl %esi /* Pop the argument count. */
- leal 4(%esp,%esi,4), %eax /* envp = &argv[argc + 1] */
- movl %eax, _environ /* Store it in the global variable. */
- movl %esp, %edx /* argv starts just at the current stack top.*/
+ movl %esp, %ecx /* argv starts just at the current stack top.*/
/* Before pushing the arguments align the stack to a double word
boundary to avoid penalties from misaligned accesses. Thanks
to Edward Seidl <seidl@janed.com> for pointing this out. */
andl $0xfffffff8, %esp
- pushl %eax /* Push garbage because we allocate
- twelve more bytes. */
+ pushl %edx /* Push address of the shared library
+ termination function. */
- pushl %eax /* Push third argument: envp. */
- pushl %edx /* Push second argument: argv. */
+ /* Push address of our own entry points to .fini and .init. */
+ pushl $_fini
+ pushl $_init
+
+ pushl %ecx /* Push second argument: argv. */
pushl %esi /* Push first argument: argc. */
- /* Call `_init', which is the entry point to our own `.init'
- section; and register with `atexit' to have `exit' call
- `_fini', which is the entry point to our own `.fini' section. */
- call _init
- pushl $_fini
- call atexit
- popl %eax
+ pushl $main
/* Call the user's main function, and exit with its value.
But let the libc call main. */
- movl $main, %eax
- pushl %eax
call __libc_start_main
- call exit
+
hlt /* Crash if somehow `exit' does return. */
/* To fulfill the System V/i386 ABI we need this symbol. Yuck, it's so
diff --git a/sysdeps/unix/sysv/linux/i386/profil-counter.h b/sysdeps/unix/sysv/linux/i386/profil-counter.h
index 615371a..a24ea19 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 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998 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
@@ -19,7 +19,7 @@
#include <signal.h>
-void
+static void
profil_counter (int signo, struct sigcontext sc)
{
profil_count ((void *) sc.eip);
diff --git a/sysdeps/unix/sysv/linux/libc-start.c b/sysdeps/unix/sysv/linux/libc-start.c
index f142195..e9d21a6 100644
--- a/sysdeps/unix/sysv/linux/libc-start.c
+++ b/sysdeps/unix/sysv/linux/libc-start.c
@@ -17,15 +17,44 @@
Boston, MA 02111-1307, USA. */
#include <link.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+extern void __libc_init_first (void);
int
__libc_start_main (int (*main) (int, char **, char **), int argc,
- char **argv, char **envp)
+ char **argv, void (*init) (void), void (*fini) (void),
+ void (*rtld_fini) (void))
{
+ /* Register the destructor of the dynamic linker if there is any. */
+ if (rtld_fini != NULL)
+ atexit (rtld_fini);
+
+ /* Call the initializer of the libc. */
+#ifdef PIC
+ if (_dl_debug_impcalls)
+ _dl_debug_message ("\tinitialize libc\n\n", NULL);
+#endif
+ __libc_init_first ();
+
+ /* Set the global _environ variable correctly. */
+ __environ = &argv[argc + 1];
+
+ /* Call the initializer of the program. */
+#ifdef PIC
+ if (_dl_debug_impcalls)
+ _dl_debug_message ("\tinitialize program: ", argv[0], "\n\n", NULL);
+#endif
+ (*init) ();
+
+ /* Register the destructor of the program. */
+ atexit (fini);
+
#ifdef PIC
if (_dl_debug_impcalls)
_dl_debug_message ("\ttransferring control: ", argv[0], "\n\n", NULL);
#endif
- return (*main) (argc, argv, envp);
+ exit ((*main) (argc, argv, __environ));
}