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Wed Nov 15 19:22:07 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

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* sysdeps/mach/hurd/dl-sysdep.c: Include _itoa.h from stdio-common
	instead of stdio.
	(_dl_sysdep_start): If passed user entry is zero and
	EXEC_STACK_ARGS flag set, reset user entry to &_start.

	* elf/rtld.c (dl_main): Only call _dl_setup_hash if there is a
	DT_HASH element.

	* libc-symbols.h [HAVE_ELF] (symbol_set_declare): Gratuitously
	repeat weak decl using weak_symbol macro, in case using broken GCC
	(<2.8).

Wed Nov 15 18:49:55 1995  Ulrich Drepper  <drepper@ipd.info.uni-karlsruhe.de>

	* sysdeps/i386/isnanl.c: New file.
	* sysdeps/i386/isinfl.c: New file.
This commit is contained in:
Roland McGrath 1995-11-16 00:44:18 +00:00
parent 2ede96c936
commit ec967c06ac
6 changed files with 125 additions and 10 deletions
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19
ChangeLog
View File

@ -1,3 +1,22 @@
Wed Nov 15 19:22:07 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c: Include _itoa.h from stdio-common
instead of stdio.
(_dl_sysdep_start): If passed user entry is zero and
EXEC_STACK_ARGS flag set, reset user entry to &_start.
* elf/rtld.c (dl_main): Only call _dl_setup_hash if there is a
DT_HASH element.
* libc-symbols.h [HAVE_ELF] (symbol_set_declare): Gratuitously
repeat weak decl using weak_symbol macro, in case using broken GCC
(<2.8).
Wed Nov 15 18:49:55 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* sysdeps/i386/isnanl.c: New file.
* sysdeps/i386/isinfl.c: New file.
Tue Nov 14 18:44:21 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* malloc/free.c (free): Moved null and aligned_blocks checks

5
elf/rtld.c
View File

@ -226,8 +226,9 @@ of this helper program; chances are you did not intend to run this program.\n",
/* Extract the contents of the dynamic section for easy access. */
elf_get_dynamic_info (l->l_ld, l->l_info);
/* Set up our cache of pointers into the hash table. */
_dl_setup_hash (l);
if (l->l_info[DT_HASH])
/* Set up our cache of pointers into the hash table. */
_dl_setup_hash (l);
if (l->l_info[DT_DEBUG])
/* There is a DT_DEBUG entry in the dynamic section. Fill it in

6
libc-symbols.h
View File

@ -235,8 +235,10 @@ extern const char _libc_intl_domainname[];
/* Declare SET for use in this module, if defined in another module. */
#define symbol_set_declare(set) \
extern void *const __start_##set __attribute__ ((__weak__)); \
extern void *const __stop_##set __attribute__ ((__weak__));
extern void *const __start_##set __attribute__ ((__weak__)); \
extern void *const __stop_##set __attribute__ ((__weak__)); \
/* Gratuitously repeat weak decl, in case using broken GCC (<2.8). */\
weak_symbol (__start_##set) weak_symbol (__stop_##set)
/* Return a pointer (void *const *) to the first element of SET. */
#define symbol_set_first_element(set) (&__start_##set)

46
sysdeps/i386/isinfl.c Normal file
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@ -0,0 +1,46 @@
/* Check `long double' for Infinity. i386 FPU version.
Copyright (C) 1991, 1992, 1995 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
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <math.h>
#include "ieee754.h"
#undef __isinfl
#undef isinfl
/* Return 0 if VALUE is finite or NaN, +1 if it
is +Infinity, -1 if it is -Infinity. */
int
__isinfl (long double value)
{
union ieee854_long_double u;
u.d = value;
/* Intel's interpretation of the IEEE 854 standard defines Inf to
have the maximum possible exponent and the MSB of the mantissa
set. No further bit of the mantissa must be set. */
if ((u.ieee.exponent & 0x7fff) == 0x7fff &&
u.ieee.mantissa0 == 0x80000000 && u.ieee.mantissa1 == 0)
return u.ieee.negative ? -1 : 1;
return 0;
}
weak_alias (__isinfl, isinfl);

43
sysdeps/i386/isnanl.c Normal file
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@ -0,0 +1,43 @@
/* Check `long double' for Not A Number. i386 FPU version.
Copyright (C) 1991, 1992, 1995 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
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <math.h>
#include "ieee754.h"
#undef __isnanl
#undef isnanl
/* Return nonzero if VALUE is not a number. */
int
__isnanl (long double value)
{
union ieee854_long_double u;
u.d = value;
/* Intel's interpretation of the IEEE 854 standard defines NaN to
have the maximum possible exponent and the MSB and at least one
more bit of the mantissa set. */
return ((u.ieee.exponent & 0x7fff) == 0x7fff
&& ((u.ieee.mantissa0 & 0x80000000) != 0)
&& ((u.ieee.mantissa0 & 0x7fffffff) != 0 || u.ieee.mantissa1 != 0));
}
weak_alias (__isnanl, isnanl);

16
sysdeps/mach/hurd/dl-sysdep.c
View File

@ -29,7 +29,7 @@ Cambridge, MA 02139, USA. */
#include <mach/mig_support.h>
#include "hurdstartup.h"
#include <mach/host_info.h>
#include "../stdio/_itoa.h"
#include "../stdio-common/_itoa.h"
#include <hurd/auth.h>
#include <hurd/term.h>
#include <stdarg.h>
@ -104,6 +104,10 @@ _dl_sysdep_start (void **start_argptr,
_dl_secure = _dl_hurd_data->flags & EXEC_SECURE;
if (_dl_hurd_data->flags & EXEC_STACK_ARGS &&
_dl_hurd_data->user_entry == 0)
_dl_hurd_data->user_entry = (vm_address_t) &_start;
unfmh(); /* XXX */
if (_dl_hurd_data->user_entry == (vm_address_t) &_start)
@ -132,14 +136,14 @@ unfmh(); /* XXX */
_dl_sysdep_fatal ("Bogus library spec: ", p, "\n", NULL);
*memobjname++ = '\0';
memobj = (mach_port_t) atoi (memobjname);
/* Add a user reference on the memory object port, so we will
still have one after _dl_map_object_from_fd calls our
`close'. */
err = __mach_port_mod_refs (__mach_task_self (), memobj,
MACH_PORT_RIGHT_SEND, +1);
assert_perror (err);
lastslash = strrchr (p, '/');
l = _dl_map_object_from_fd (lastslash ? lastslash + 1 : p,
memobj, strdup (p));
@ -278,7 +282,7 @@ open (const char *file_name, int mode, ...)
dealloc_dir = 0;
nloops = 0;
while (1)
{
if (dealloc_dir)
@ -468,7 +472,7 @@ open (const char *file_name, int mode, ...)
bad_magic:
return __hurd_fail (EGRATUITOUS);
}
break;
break;
default:
return __hurd_fail (EGRATUITOUS);
@ -574,7 +578,7 @@ weak_symbol (free)
/* Avoid signal frobnication in setjmp/longjmp. */
int __sigjmp_save (sigjmp_buf env, int savemask)
int __sigjmp_save (sigjmp_buf env, int savemask)
{ env[0].__mask_was_saved = savemask; return 0; }
weak_symbol (__sigjmp_save)