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* sysdeps/ieee754/flt-32/e_hypotf.c [!__STDC__]: Fix function name.

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2005-08-01  Bob Wilson  <bob.wilson@acm.org>
        Richard Sandiford  <richard@codesourcery.com>

	* sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Add missing
	exponent bias to the value for 2^126.

2005-08-30  Jakub Jelinek  <jakub@redhat.com>
	    Alan Modra  <amodra@bigpond.net.au>

	* elf/dl-addr.c (_dl_addr): Use DL_ADDR_SYM_MATCH macro.
	* sysdeps/generic/ldsodefs.h (DL_ADDR_SYM_MATCH): Define.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/ldsodefs.h: New file.
This commit is contained in:
Ulrich Drepper 2005-08-30 22:48:53 +00:00
parent 4fb5ab741a
commit 0b3cf80142
5 changed files with 109 additions and 14 deletions
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17
ChangeLog
View file

@ -1,3 +1,20 @@
2005-08-30 Ulrich Drepper <drepper@redhat.com>
* sysdeps/ieee754/flt-32/e_hypotf.c [!__STDC__]: Fix function name.
2005-08-01 Bob Wilson <bob.wilson@acm.org>
Richard Sandiford <richard@codesourcery.com>
* sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Add missing
exponent bias to the value for 2^126.
2005-08-30 Jakub Jelinek <jakub@redhat.com>
Alan Modra <amodra@bigpond.net.au>
* elf/dl-addr.c (_dl_addr): Use DL_ADDR_SYM_MATCH macro.
* sysdeps/generic/ldsodefs.h (DL_ADDR_SYM_MATCH): Define.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/ldsodefs.h: New file.
2005-08-23 Ulrich Drepper <drepper@redhat.com>
* nscd/nscd.c (main): Use error while process isn't running in the

15
elf/dl-addr.c
View file

@ -85,22 +85,15 @@ _dl_addr (const void *address, Dl_info *info,
the string table which generally follows the symbol table. */
symtabend = (const ElfW(Sym) *) strtab;
/* We assume that the string table follows the symbol table,
because there is no way in ELF to know the size of the
dynamic symbol table!! */
const ElfW(Sym) *matchsym;
for (matchsym = NULL; (void *) symtab < (void *) symtabend; ++symtab)
if (addr >= match->l_addr + symtab->st_value
if ((ELFW(ST_BIND) (symtab->st_info) == STB_GLOBAL
|| ELFW(ST_BIND) (symtab->st_info) == STB_WEAK)
#if defined USE_TLS
&& ELFW(ST_TYPE) (symtab->st_info) != STT_TLS
#endif
&& ((symtab->st_size == 0
&& addr == match->l_addr + symtab->st_value)
|| addr < match->l_addr + symtab->st_value + symtab->st_size)
&& symtab->st_name < strtabsize
&& (matchsym == NULL || matchsym->st_value < symtab->st_value)
&& (ELFW(ST_BIND) (symtab->st_info) == STB_GLOBAL
|| ELFW(ST_BIND) (symtab->st_info) == STB_WEAK))
&& DL_ADDR_SYM_MATCH (match, symtab, matchsym, addr)
&& symtab->st_name < strtabsize)
matchsym = (ElfW(Sym) *) symtab;
if (mapp)

10
sysdeps/generic/ldsodefs.h
View file

@ -62,7 +62,7 @@ typedef struct link_map *lookup_t;
# define LOOKUP_VALUE(map) map
# define LOOKUP_VALUE_ADDRESS(map) ((map) ? (map)->l_addr : 0)
/* on some architectures a pointer to a function is not just a pointer
/* On some architectures a pointer to a function is not just a pointer
to the actual code of the function but rather an architecture
specific descriptor. */
#ifndef ELF_FUNCTION_PTR_IS_SPECIAL
@ -73,6 +73,14 @@ typedef struct link_map *lookup_t;
# define DL_DT_FINI_ADDRESS(map, start) (start)
#endif
/* On some architectures dladdr can't use st_size of all symbols this way. */
#define DL_ADDR_SYM_MATCH(L, SYM, MATCHSYM, ADDR) \
((ADDR) >= (L)->l_addr + (SYM)->st_value \
&& (((SYM)->st_size == 0 \
&& (ADDR) == (L)->l_addr + (SYM)->st_value) \
|| (ADDR) < (L)->l_addr + (SYM)->st_value + (SYM)->st_size) \
&& ((MATCHSYM) == NULL || (MATCHSYM)->st_value < (SYM)->st_value))
/* Unmap a loaded object, called by _dl_close (). */
#ifndef DL_UNMAP_IS_SPECIAL
# define DL_UNMAP(map) \

4
sysdeps/ieee754/flt-32/e_hypotf.c
View file

@ -23,7 +23,7 @@ static char rcsid[] = "$NetBSD: e_hypotf.c,v 1.5 1995/05/12 04:57:30 jtc Exp $";
#ifdef __STDC__
float __ieee754_hypotf(float x, float y)
#else
float __ieee754_hypot(x,y)
float __ieee754_hypotf(x,y)
float x, y;
#endif
{
@ -54,7 +54,7 @@ static char rcsid[] = "$NetBSD: e_hypotf.c,v 1.5 1995/05/12 04:57:30 jtc Exp $";
if(hb < 0x26800000) { /* b < 2**-50 */
if(hb <= 0x007fffff) { /* subnormal b or 0 */
if(hb==0) return a;
SET_FLOAT_WORD(t1,0x3f000000); /* t1=2^126 */
SET_FLOAT_WORD(t1,0x7e800000); /* t1=2^126 */
b *= t1;
a *= t1;
k -= 126;

77
sysdeps/unix/sysv/linux/powerpc/powerpc64/ldsodefs.h Normal file
View file

@ -0,0 +1,77 @@
/* Run-time dynamic linker data structures for loaded ELF shared objects.
Copyright (C) 2005 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _LDSODEFS_H
/* Get the real definitions. */
#include_next <ldsodefs.h>
/* Now define our stuff. */
static __always_inline bool
_dl_ppc64_is_opd_sym (const struct link_map *l, const ElfW(Sym) *sym)
{
return (ELFW(ST_TYPE) (sym->st_info) == STT_FUNC
&& l->l_addr + sym->st_value >= (ElfW(Addr)) l->l_ld
&& l->l_addr + sym->st_value < l->l_map_end
&& sym->st_size != 0);
}
static __always_inline bool
_dl_ppc64_addr_sym_match (const struct link_map *l, const ElfW(Sym) *sym,
const ElfW(Sym) *matchsym, ElfW(Addr) addr)
{
ElfW(Addr) value = l->l_addr + sym->st_value;
if (_dl_ppc64_is_opd_sym (l, sym))
{
if (addr < value || addr >= value + 24)
{
value = *(ElfW(Addr) *) value;
if (addr < value || addr >= value + sym->st_size)
return false;
}
}
else if (sym->st_size == 0)
{
if (addr != value)
return false;
}
else if (addr < value || addr >= value + sym->st_size)
return false;
if (matchsym == NULL)
return true;
ElfW(Addr) matchvalue = l->l_addr + matchsym->st_value;
if (_dl_ppc64_is_opd_sym (l, matchsym)
&& (addr < matchvalue || addr > matchvalue + 24))
matchvalue = *(ElfW(Addr) *) matchvalue;
return matchvalue < value;
}
/* If this is a function symbol defined past the end of our dynamic
section, then it must be a function descriptor. Allow these symbols
to match their associated function code range as well as the
descriptor addresses. */
#undef DL_ADDR_SYM_MATCH
#define DL_ADDR_SYM_MATCH(L, SYM, MATCHSYM, ADDR) \
_dl_ppc64_addr_sym_match (L, SYM, MATCHSYM, ADDR)
#endif /* ldsodefs.h */