+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
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. */
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];
# 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
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. */
--- /dev/null
+#define memset bzero
+#include <sysdeps/i386/i586/memset.S>
--- /dev/null
+/* 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
projects / external / glibc.git / commitdiff