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2000-06-13  Ulrich Drepper  <drepper@redhat.com>

	* misc/sys/cdefs.h: Define __bounded and __unbounded if
	__BOUNDED_POINTERS__ is not defined.

2000-06-07  Greg McGary  <greg@mcgary.org>

	* sysdeps/generic/bp-sym.h: New file.
	* sysdeps/generic/bp-start.h: New file.
	* sysdeps/i386/elf/start.S: Designate BP symbols.
	* sysdeps/generic/libc-start.c: Wrap bounds around
	argv & envp and each of their string members.

2000-06-07  Greg McGary  <greg@mcgary.org>

	* sysdeps/unix/make-syscalls.sh: Add comments to
	output that aid debugging & comprehension.
	Map simple syscall signatures to number of args.
	Generate BP syscall thunk definitions.
	* sysdeps/generic/bp-thunks.h: New file.
	* sysdeps/unix/syscalls.list: Replace arg-count with
	simple return+arg signature.
	* sysdeps/unix/common/syscalls.list: Likewise.
	* sysdeps/unix/inet/syscalls.list: Likewise.
	* sysdeps/unix/mman/syscalls.list: Likewise.
	* sysdeps/unix/sysv/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.

2000-06-07  Greg McGary  <greg@mcgary.org>

	* Makeconfig (CPPFLAGS-.ob): pass -fbounded-pointers for all files
	*.[cS].
	(CFLAGS-.ob): Don't optimize sibling calls.
	(bppfx): New variable.
	* Makerules (elide-bp-thunks): New variable.
	(elide-routines.*): Elide BP-* files for all but *.ob.
	(sources): Include bp-thunks.

	* iconv/gconv_simple.c: Remove unnecessary prototype.

	* iconv/gconv_trans.c: Pretty print.
This commit is contained in:
Ulrich Drepper
2000-06-13 07:33:12 +00:00
parent a5c88158b6
commit ab95290c78
19 changed files with 674 additions and 245 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
sysdeps/generic/libc-start.c
View File

@@ -19,22 +19,34 @@
#include <stdlib.h>
#include <unistd.h>
#include <ldsodefs.h>
#include <bp-start.h>
#include <bp-sym.h>
extern void __libc_init_first (int argc, char **argv, char **envp);
extern int _dl_starting_up;
weak_extern (_dl_starting_up)
extern int __libc_multiple_libcs;
extern void *__libc_stack_end;
extern void *__unbounded __libc_stack_end;
/* Prototype for local function. */
extern void __libc_check_standard_fds (void);
int
__libc_start_main (int (*main) (int, char **, char **), int argc,
char **argv, void (*init) (void), void (*fini) (void),
void (*rtld_fini) (void), void *stack_end)
/* GKM FIXME: GCC: this should get __BP_ prefix by virtue of the
BPs in the arglist of startup_info.main and startup_info.init. */
BP_SYM (__libc_start_main) (int (*main) (int, char **, char **),
int argc, char *__unbounded *__unbounded ubp_av,
void (*init) (void), void (*fini) (void),
void (*rtld_fini) (void), void *__unbounded stack_end)
{
char *__unbounded *__unbounded ubp_ev = &ubp_av[argc + 1];
#if __BOUNDED_POINTERS__
char **argv;
#else
# define argv ubp_av
#endif
#ifndef SHARED
/* The next variable is only here to work around a bug in gcc <= 2.7.2.2.
If the address would be taken inside the expression the optimizer
@@ -44,12 +56,11 @@ __libc_start_main (int (*main) (int, char **, char **), int argc,
__libc_multiple_libcs = dummy_addr && !_dl_starting_up;
#endif
INIT_ARGV_and_ENVIRON;
/* Store the lowest stack address. */
__libc_stack_end = stack_end;
/* Set the global _environ variable correctly. */
__environ = &argv[argc + 1];
#ifndef SHARED
/* Some security at this point. Prevent starting a SUID binary where
the standard file descriptors are not opened. We have to do this