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mirror of https://sourceware.org/git/glibc.git synced 2025-07-29 11:41:21 +03:00
1997-08-29 02:36  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (version-info.h): Use ISO form for the date.

	* catgets/catgetsinfo.h: Include <bits/libc-lock.h>.
	(struct catalog_obj): Add lock field.
	(__open_catalog): Remove second parameter from prototype.
	* catgets/catgets.c (catopen): Initialize lock field.
	(catgets): Don't pass second parameter to __open_catalog.
	* catgets/gencat.c: Initialize lock field and don't pass second
	parameter to __open_catalog.
	* catgets/open_catalog.c (__open_catalog): Decide about use of
	path by examining path in struct, not based on extra argument.
	Acquire a the lock before trying to load the catalog and release
	it before returning.

	* csu/Makefile (abi-tag.h): Make sure target directory exists.

	* io/Makefile (headers): Add bits/poll.h.
	* io/sys/poll.h: Remove definitions of POLL* constants.
	Include <bits/poll.h>.
	* sysdeps/generic/bits/poll.h: New file.
	* sysdeps/unix/sysv/linux/bits/poll.h: New file.
	* sysdeps/unix/sysv/linux/m68k/bits/poll.h: New file.
	* sysdeps/unix/sysv/linux/mips/bits/poll.h: New file.
	* sysdeps/unix/sysv/linux/sparc/bits/poll.h: New file.

	* libio/fileops.c (_IO_file_read, _IO_file_write): Remove dead code.

	* malloc/obstack.c: Add casts to keep very verbose compilers on
	64bit machine quiet.

	* nss/Makefile (libnss_db.so): Find libdb.so in db2 directory.

1997-08-28 17:30  Ulrich Drepper  <drepper@cygnus.com>

	* catgets/catgets.c (catopen): Correctly determine length of string
	in NLSPATH evironment variable.  Patch by HJ Lu <hjl@gnu.ai.mit.edu>.

1997-08-27 23:19  Richard Henderson  <rth@cygnus.com>

	* sysdeps/generic/dl-sysdep.c (DL_FIND_ARG_COMPONENTS): Provide
	default macro to track down arguments from stack start.
	(_dl_sysdep_start): Use it.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Truncate to simply
	providing a special DL_FIND_ARG_COMPONENTS and including the next
	file up the line.

	* sysdeps/powerpc/e_sqrt.c: Move contents to w_sqrt.c and provide stub.
	* sysdeps/powerpc/e_sqrtf.c: Likewise.
	* sysdeps/powerpc/s_copysignf.S: Provide empty file; symbol is with
	the double precision version.
	* sysdeps/powerpc/s_fabsf.S: Likewise.
	* sysdeps/powerpc/s_isnanf.S: Likewise.
This commit is contained in:
Ulrich Drepper
1997-08-29 01:19:12 +00:00
parent 92f1da4da0
commit 39e16978c3
36 changed files with 980 additions and 637 deletions

View File

@ -17,135 +17,27 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <elf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <link.h>
#include <unistd.h>
/* The PowerPC's auxiliary argument block gets aligned to a 16-byte
boundary. This is history and impossible to change compatibly. */
#define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \
do { \
void **_tmp; \
(argc) = *(long *) cookie; \
(argv) = (char **) cookie + 1; \
(envp) = (argv) + (argc) + 1; \
for (_tmp = (void **) (envp); *_tmp; ++_tmp) \
continue; \
if (*_tmp == 0 && ((size_t)_tmp & 0xf) != 0) \
{ \
size_t _test = (size_t)_tmp; \
_test = _test + 0xf & ~0xf; \
if (*(long *)_test == AT_PHDR) \
_tmp = (void **)_test; \
} \
(auxp) = (void *) _tmp; \
} while (0)
extern int _dl_argc;
extern char **_dl_argv;
extern char **_environ;
extern size_t _dl_pagesize;
extern void _end;
extern void _start (void);
int __libc_enable_secure;
int __libc_multiple_libcs; /* Defining this here avoids the inclusion
of init-first. */
ElfW(Addr)
_dl_sysdep_start (void **start_argptr,
void (*dl_main) (const ElfW(Phdr) *phdr, ElfW(Word) phnum,
ElfW(Addr) *user_entry))
{
const ElfW(Phdr) *phdr = NULL;
ElfW(Word) phnum = 0;
ElfW(Addr) user_entry;
ElfW(auxv_t) *av;
uid_t uid = 0;
uid_t euid = 0;
gid_t gid = 0;
gid_t egid = 0;
unsigned int seen;
user_entry = (ElfW(Addr)) &_start;
_dl_argc = *(long *) start_argptr;
_dl_argv = (char **) start_argptr + 1;
_environ = &_dl_argv[_dl_argc + 1];
start_argptr = (void **) _environ;
while (*start_argptr)
++start_argptr;
++start_argptr;
if (*start_argptr == 0 &&
((unsigned)(char *)start_argptr & 0xF) != 0)
{
unsigned test_sap = (int)(char *)start_argptr;
test_sap = test_sap + 0xF & ~0xF;
if (*(long *)(char *)test_sap == AT_PHDR)
start_argptr = (void **)(char *)test_sap;
}
seen = 0;
#define M(type) (1 << (type))
for (av = (void *) start_argptr;
av->a_type != AT_NULL;
seen |= M ((++av)->a_type))
switch (av->a_type)
{
case AT_PHDR:
phdr = av->a_un.a_ptr;
break;
case AT_PHNUM:
phnum = av->a_un.a_val;
break;
case AT_PAGESZ:
_dl_pagesize = av->a_un.a_val;
break;
case AT_ENTRY:
user_entry = av->a_un.a_val;
break;
case AT_UID:
uid = av->a_un.a_val;
break;
case AT_GID:
gid = av->a_un.a_val;
break;
case AT_EUID:
euid = av->a_un.a_val;
break;
case AT_EGID:
egid = av->a_un.a_val;
break;
}
/* Linux doesn't provide us with any of these values on the stack
when the dynamic linker is run directly as a program. */
#define SEE(UID, uid) if ((seen & M (AT_##UID)) == 0) uid = __get##uid ()
SEE (UID, uid);
SEE (GID, gid);
SEE (EUID, euid);
SEE (EGID, egid);
__libc_enable_secure = uid != euid || gid != egid;
__brk (0); /* Initialize the break. */
if (__sbrk (0) == &_end)
{
/* The dynamic linker was run as a program, and so the initial break
starts just after our bss, at &_end. The malloc in dl-minimal.c
will consume the rest of this page, so tell the kernel to move the
break up that far. When the user program examines its break, it
will see this new value and not clobber our data. */
size_t pg = __getpagesize ();
__sbrk (pg - ((&_end - (void *) 0) & pg));
__sbrk (pg - ((&_end - (void *) 0) & (pg - 1)));
}
(*dl_main) (phdr, phnum, &user_entry);
return user_entry;
}
void
_dl_sysdep_start_cleanup (void)
{
}
#ifndef MAP_ANON
/* This is only needed if the system doesn't support MAP_ANON. */
int
_dl_sysdep_open_zero_fill (void)
{
return __open ("/dev/zero", O_RDONLY);
}
#endif
#include <sysdeps/unix/sysv/linux/dl-sysdep.c>