mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 10:50:07 +00:00
Wed Mar 27 14:52:11 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* elf/rtld.c (dl_main): Call _dl_sysdep_start_cleanup after _dl_relocate_object loop. Avoid relocating RTLD_MAP in that loop, and do it individually if necessary after _dl_sysdep_start_cleanup call. * stdlib/Makefile (mpn-routines): Add divrem. Tue Mar 26 22:54:14 Ulrich Drepper <drepper@gnu.ai.mit.edu> * stdio-common/printf_fp.c (__printf_fp): Use mpn_divmod instead of __mpn_divmod. Wed Mar 27 10:26:21 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/alpha/setjmp.S: Must establish global pointer before address of __sigsetjmp_aux can be loaded. Wed Mar 27 02:23:19 1996 Ulrich Drepper <drepper@gnu.ai.mit.edu> * sysdeps/i386/i586/memset.S: New file. Highly optimized version for i586 contributed by Torbjorn Granlund. Adapted for use as bzero. * sysdeps/i386/i586/bzero.S: Use sysdeps/i386/i586/memset.S code to implement bzero(). Tue Mar 26 20:01:17 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * stdlib/Makefile (mpn-routines): Remove divmod.
This commit is contained in:
Roland McGrath
parent
3ef987a23c
commit
53f770e0f9
30
ChangeLog
30
ChangeLog
@ -1,3 +1,33 @@
|
||||
Wed Mar 27 14:52:11 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
|
||||
|
||||
* elf/rtld.c (dl_main): Call _dl_sysdep_start_cleanup after
|
||||
_dl_relocate_object loop. Avoid relocating RTLD_MAP in that loop, and
|
||||
do it individually if necessary after _dl_sysdep_start_cleanup call.
|
||||
|
||||
* stdlib/Makefile (mpn-routines): Add divrem.
|
||||
|
||||
Tue Mar 26 22:54:14 Ulrich Drepper <drepper@gnu.ai.mit.edu>
|
||||
|
||||
* stdio-common/printf_fp.c (__printf_fp): Use mpn_divmod
|
||||
instead of __mpn_divmod.
|
||||
|
||||
Wed Mar 27 10:26:21 1996 David Mosberger-Tang <davidm@azstarnet.com>
|
||||
|
||||
* sysdeps/alpha/setjmp.S: Must establish global pointer before
|
||||
address of __sigsetjmp_aux can be loaded.
|
||||
|
||||
Wed Mar 27 02:23:19 1996 Ulrich Drepper <drepper@gnu.ai.mit.edu>
|
||||
|
||||
* sysdeps/i386/i586/memset.S: New file. Highly optimized
|
||||
version for i586 contributed by Torbjorn Granlund.
|
||||
Adapted for use as bzero.
|
||||
* sysdeps/i386/i586/bzero.S: Use sysdeps/i386/i586/memset.S
|
||||
code to implement bzero().
|
||||
|
||||
Tue Mar 26 20:01:17 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
|
||||
|
||||
* stdlib/Makefile (mpn-routines): Remove divmod.
|
||||
|
||||
Tue Mar 26 15:40:14 1996 Brendan Kehoe <brendan@zen.org>
|
||||
|
||||
* sysdeps/unix/sysv/sysv4/solaris2/sparc/sysdep.h (NO_UNDERSCORES): Use
|
||||
|
||||
31
elf/rtld.c
31
elf/rtld.c
@ -339,23 +339,36 @@ of this helper program; chances are you did not intend to run this program.\n",
|
||||
|
||||
lazy = !_dl_secure && *(getenv ("LD_BIND_NOW") ?: "") == '\0';
|
||||
|
||||
/* Do any necessary cleanups for the startup OS interface code.
|
||||
We do these now so that no calls are made after real relocation
|
||||
which might be resolved to different functions than we expect. */
|
||||
_dl_sysdep_start_cleanup ();
|
||||
|
||||
/* Now we have all the objects loaded. Relocate them all.
|
||||
We do this in reverse order so that copy relocs of earlier
|
||||
objects overwrite the data written by later objects. */
|
||||
/* Now we have all the objects loaded. Relocate them all except for
|
||||
the dynamic linker itself. We do this in reverse order so that
|
||||
copy relocs of earlier objects overwrite the data written by later
|
||||
objects. We do not re-relocate the dynamic linker itself in this
|
||||
loop because that could result in the GOT entries for functions we
|
||||
call being changed, and that would break us. It is safe to
|
||||
relocate the dynamic linker out of order because it has no copy
|
||||
relocs (we know that because it is self-contained). */
|
||||
l = _dl_loaded;
|
||||
while (l->l_next)
|
||||
l = l->l_next;
|
||||
do
|
||||
{
|
||||
_dl_relocate_object (l, lazy);
|
||||
if (l != &rtld_map)
|
||||
_dl_relocate_object (l, lazy);
|
||||
l = l->l_prev;
|
||||
} while (l);
|
||||
|
||||
/* Do any necessary cleanups for the startup OS interface code.
|
||||
We do these now so that no calls are made after rtld re-relocation
|
||||
which might be resolved to different functions than we expect.
|
||||
We cannot do this before relocating the other objects because
|
||||
_dl_relocate_object might need to call `mprotect' for DT_TEXTREL. */
|
||||
_dl_sysdep_start_cleanup ();
|
||||
|
||||
if (rtld_map.l_opencount > 0)
|
||||
/* There was an explicit ref to the dynamic linker as a shared lib.
|
||||
Re-relocate ourselves with user-controlled symbol definitions. */
|
||||
_dl_relocate_object (&rtld_map, lazy);
|
||||
|
||||
/* Tell the debugger where to find the map of loaded objects. */
|
||||
dl_r_debug.r_version = 1 /* R_DEBUG_VERSION XXX */;
|
||||
dl_r_debug.r_ldbase = rtld_map.l_addr; /* Record our load address. */
|
||||
|
||||
@ -204,7 +204,7 @@ __printf_fp (FILE *fp,
|
||||
hi = 0;
|
||||
else
|
||||
{
|
||||
hi = __mpn_divmod (tmp, frac, fracsize, scale, scalesize);
|
||||
hi = mpn_divmod (tmp, frac, fracsize, scale, scalesize);
|
||||
tmp[fracsize - scalesize] = hi;
|
||||
hi = tmp[0];
|
||||
|
||||
|
||||
@ -49,7 +49,7 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv
|
||||
|
||||
|
||||
# Several mpn functions from GNU MP are used by the strtod function.
|
||||
mpn-routines := add_1 add_n addmul_1 cmp divmod divmod_1 udiv_qrnnd \
|
||||
mpn-routines := add_1 add_n addmul_1 cmp divrem divmod_1 udiv_qrnnd \
|
||||
lshift rshift mod_1 mul mul_1 mul_n sub_n submul_1
|
||||
mpn-headers = longlong.h gmp.h gmp-impl.h gmp-mparam.h asm-syntax.h
|
||||
|
||||
|
||||
@ -22,6 +22,7 @@ Cambridge, MA 02139, USA. */
|
||||
reliably access the stack or frame pointers, so we pass them in as
|
||||
extra arguments. */
|
||||
ENTRY (__sigsetjmp)
|
||||
ldgp $29, 0($27)
|
||||
lda $27, __sigsetjmp_aux/* Load address to jump to. */
|
||||
bis $30, $30, $18 /* Pass SP as 3rd arg. */
|
||||
bis $15, $15, $19 /* Pass FP as 4th arg. */
|
||||
|
||||
2
sysdeps/i386/i586/bzero.S
Normal file
2
sysdeps/i386/i586/bzero.S
Normal file
@ -0,0 +1,2 @@
|
||||
#define memset bzero
|
||||
#include <sysdeps/i386/i586/memset.S>
|
||||
101
sysdeps/i386/i586/memset.S
Normal file
101
sysdeps/i386/i586/memset.S
Normal file
@ -0,0 +1,101 @@
|
||||
/* memset/bzero -- set memory area to CH/0
|
||||
Highly optimized version for ix85, x>=5.
|
||||
Copyright (C) 1996 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Torbjorn Granlund, <tege@matematik.su.se>
|
||||
|
||||
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., 59 Temple Place - Suite 330,
|
||||
Boston, MA 02111-1307, USA. */
|
||||
|
||||
#include <sysdep.h>
|
||||
|
||||
/*
|
||||
INPUT PARAMETERS:
|
||||
(memset) (bzero)
|
||||
dst (sp + 4) dst (sp + 4)
|
||||
ch (sp + 8) len (sp + 8)
|
||||
len (sp + 12)
|
||||
*/
|
||||
|
||||
|
||||
.text
|
||||
ENTRY (memset)
|
||||
pushl %edi
|
||||
|
||||
movl 8(%esp), %edi /* destination pointer */
|
||||
#ifdef memset
|
||||
xorl %eax, %eax /* we fill with 0 */
|
||||
movl 12(%esp), %edx /* size (in 8-bit words) */
|
||||
#else
|
||||
movb 12(%esp), %al /* use CH to fill */
|
||||
movl 16(%esp), %edx /* size (in 8-bit words) */
|
||||
|
||||
movb %al, %ah
|
||||
movl %eax, %ecx
|
||||
shll $16, %eax
|
||||
movw %cx, %ax
|
||||
#endif
|
||||
cld
|
||||
|
||||
/* If less than 36 bytes to write, skip tricky code (it wouldn't work). */
|
||||
cmpl $36, %edx
|
||||
movl %edx, %ecx /* needed when branch is taken! */
|
||||
jl L2
|
||||
|
||||
/* First write 0-3 bytes to make the pointer 32-bit aligned. */
|
||||
movl %edi, %ecx /* Copy ptr to ecx... */
|
||||
negl %ecx /* ...and negate that and... */
|
||||
andl $3, %ecx /* ...mask to get byte count. */
|
||||
subl %ecx, %edx /* adjust global byte count */
|
||||
rep
|
||||
stosb
|
||||
|
||||
subl $32, %edx /* offset count for unrolled loop */
|
||||
movl (%edi), %ecx /* Fetch destination cache line */
|
||||
|
||||
.align 2, 0x90 /* supply 0x90 for broken assemblers */
|
||||
L1: movl 28(%edi), %ecx /* allocate cache line for destination */
|
||||
subl $32, %edx /* decr loop count */
|
||||
movl %eax, 0(%edi) /* store words pairwise */
|
||||
movl %eax, 4(%edi)
|
||||
movl %eax, 8(%edi)
|
||||
movl %eax, 12(%edi)
|
||||
movl %eax, 16(%edi)
|
||||
movl %eax, 20(%edi)
|
||||
movl %eax, 24(%edi)
|
||||
movl %eax, 28(%edi)
|
||||
leal 32(%edi), %edi /* update destination pointer */
|
||||
jge L1
|
||||
|
||||
leal 32(%edx), %ecx /* reset offset count */
|
||||
|
||||
/* Write last 0-7 full 32-bit words (up to 8 words if loop was skipped). */
|
||||
L2: shrl $2, %ecx /* convert byte count to longword count */
|
||||
rep
|
||||
stosl
|
||||
|
||||
/* Finally write the last 0-3 bytes. */
|
||||
movl %edx, %ecx
|
||||
andl $3, %ecx
|
||||
rep
|
||||
stosb
|
||||
|
||||
/* Load result (only if used as memset). */
|
||||
#ifndef memset
|
||||
movl 8(%esp), %eax
|
||||
#endif
|
||||
popl %edi
|
||||
|
||||
ret
|
||||
Loading…
Reference in New Issue
Block a user