Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>

	* malloc/malloc.c (_malloc_internal): Performance fix.  Move
	if statement out of loop.

	* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite.  Much faster
	implementation using GMP functions.  Contributed by
	Torbjorn Granlund and Ulrich Drepper.

	* stdio/test_rdwr.c: Include <errno.h>.

	* sysdeps/i386/i586/Implies: New file.

	New highly optimized string functions for i[345]86.
	* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
        * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
        * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
        * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
        * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
        * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
        * sysdeps/i386/i586/strlen.S: New file.
	* sysdeps/i386/memchr.c: Removed.  There is now an assembler version.

	* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
	not correspond to used values.

	* sysdeps/unix/sysv/linux/nfs/nfs.h: New file.  Simply a wrapper
        around a kernel header file.
	* sysdeps/unix/sysv/linux/Dist: Add it.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
	Likewise.

	* sysdeps/unix/sysv/linux/local_lim.h: Rewrite.  Instead of
        defining ourself we use a kernel header file.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
        call handler for i586.

	* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Sat Oct 14 02:52:36 1995  Ulrich Drepper  <drepper@ipd.info.uni-karlsruhe.de>

	* malloc/malloc.c (_malloc_internal): Performance fix.  Move
	if statement out of loop.

	* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite.  Much faster
	implementation using GMP functions.  Contributed by
	Torbjorn Granlund and Ulrich Drepper.

	* stdio/test_rdwr.c: Include <errno.h>.

	* sysdeps/i386/i586/Implies: New file.

	New highly optimized string functions for i[345]86.
	* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
        * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
        * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
        * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
        * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
        * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
        * sysdeps/i386/i586/strlen.S: New file.
	* sysdeps/i386/memchr.c: Removed.  There is now an assembler version.

	* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
	not correspond to used values.

	* sysdeps/unix/sysv/linux/nfs/nfs.h: New file.  Simply a wrapper
        around a kernel header file.
	* sysdeps/unix/sysv/linux/Dist: Add it.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
	Likewise.

	* sysdeps/unix/sysv/linux/local_lim.h: Rewrite.  Instead of
        defining ourself we use a kernel header file.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
        call handler for i586.

	* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.

1 files changed, 82 insertions, 0 deletions

diff --git a/sysdeps/i386/i586/submul_1.S b/sysdeps/i386/i586/submul_1.S
new file mode 100644
index 0000000000..14bfe54e24
--- /dev/null
+++ b/sysdeps/i386/i586/submul_1.S
@@ -0,0 +1,82 @@
+/* Pentium __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
+   the result from a second limb vector.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+   INPUT PARAMETERS
+   res_ptr	(sp + 4)
+   s1_ptr	(sp + 8)
+   size		(sp + 12)
+   s2_limb	(sp + 16)
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+#define res_ptr edi
+#define s1_ptr esi
+#define size ecx
+#define s2_limb ebp
+
+	TEXT
+	ALIGN (3)
+	GLOBL	C_SYMBOL_NAME(__mpn_submul_1)
+C_SYMBOL_NAME(__mpn_submul_1:)
+
+	INSN1(push,l	,R(edi))
+	INSN1(push,l	,R(esi))
+	INSN1(push,l	,R(ebx))
+	INSN1(push,l	,R(ebp))
+
+	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,20))
+	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,24))
+	INSN2(mov,l	,R(size),MEM_DISP(esp,28))
+	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,32))
+
+	INSN2(lea,l	,R(res_ptr),MEM_INDEX(res_ptr,size,4))
+	INSN2(lea,l	,R(s1_ptr),MEM_INDEX(s1_ptr,size,4))
+	INSN1(neg,l	,R(size))
+	INSN2(xor,l	,R(edx),R(edx))
+	ALIGN (3)
+Loop:
+	INSN2(mov,l	,R(ebx),R(edx))
+	INSN2(mov,l	,R(eax),MEM_INDEX(s1_ptr,size,4))
+
+	INSN1(mul,l	,R(s2_limb))
+
+	INSN2(add,l	,R(eax),R(ebx))
+	INSN2(mov,l	,R(ebx),MEM_INDEX(res_ptr,size,4))
+
+	INSN2(adc,l	,R(edx),$0)
+	INSN2(sub,l	,R(ebx),R(eax))
+
+	INSN2(adc,l	,R(edx),$0)
+	INSN2(mov,l	,MEM_INDEX(res_ptr,size,4),R(ebx))
+
+	INSN1(inc,l	,R(size))
+	INSN1(jnz,	,Loop)
+
+
+	INSN2(mov,l	,R(eax),R(edx))
+	INSN1(pop,l	,R(ebp))
+	INSN1(pop,l	,R(ebx))
+	INSN1(pop,l	,R(esi))
+	INSN1(pop,l	,R(edi))
+	ret