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.

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

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.
+      /* Now we have all the objects loaded.  Relocate them all except for
-	 We do these now so that no calls are made after real relocation
+	 the dynamic linker itself.  We do this in reverse order so that
-	 which might be resolved to different functions than we expect.  */
+	 copy relocs of earlier objects overwrite the data written by later
-      _dl_sysdep_start_cleanup ();
+	 objects.  We do not re-relocate the dynamic linker itself in this
-
+	 loop because that could result in the GOT entries for functions we
-      /* Now we have all the objects loaded.  Relocate them all.
+	 call being changed, and that would break us.  It is safe to
-	 We do this in reverse order so that copy relocs of earlier
+	 relocate the dynamic linker out of order because it has no copy
-	 objects overwrite the data written by later objects.  */
+	 relocs (we know that because it is self-contained).  */
       l = _dl_loaded;
       while (l->l_next)
 	l = l->l_next;
       do
 	{
+	  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.  */

stdio-common/printf_fp.c

@@ -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];
 

stdlib/Makefile

@@ -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
 

sysdeps/alpha/setjmp.S

@@ -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.  */

sysdeps/i386/i586/bzero.S

@@ -0,0 +1,2 @@
+#define memset bzero
+#include <sysdeps/i386/i586/memset.S>

sysdeps/i386/i586/memset.S

@@ -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