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