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authorUlrich Drepper <drepper@redhat.com>1998-03-18 14:42:25 +0000
committerUlrich Drepper <drepper@redhat.com>1998-03-18 14:42:25 +0000
commit3116126871400c8737a9df0145f66534f097c06c (patch)
tree9a41a87b932c3963a7d482ceabc8de92c69bef5b /sysdeps/arm/memset.S
parent52cda95831cdc685d74b99334a06fb1f69996dc4 (diff)
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Update.
1998-03-18 14:25 Ulrich Drepper <drepper@cygnus.com> * string/bits/string2.h: Add optimization for strdup. Always define __strsep and __strtok_r and make real names available when feature select macros are defined. 1998-03-18 Andreas Jaeger <aj@arthur.rhein-neckar.de> * manual/install.texi (Installation): Use i486-linux as example instead of the unsupported sunos4. (Reporting Bugs): Mention glibcbug script. (Tools for Installation): gcc 2.8.1/egcs 1.0.2 is required. 1998-03-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * posix/wordexp-tst.sh: Make portable. Add more tests. * posix/Makefile (do-globtest do-wordexp-test): New targets. 1998-03-18 13:38 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/libc-start.c: Moved to ... * sysdeps/generic/libc-start.c: ...here, replacing former content. * sysdeps/unix/sysv/linux/Dist: Add netash/ash.h and netpacket/packet.h. * sysdeps/unix/sysv/linux/bits/socket.h: Pretty print. 1998-03-17 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/bits/resource.h: Remove trailing comma in enumerator for strict standard compliance. * sysdeps/generic/bits/resource.h: Likewise. 1998-03-18 10:04 Philip Blundell <pb@nexus.co.uk> * sysdeps/arm/sysdep.h (__ARM_USES_FP): Deleted. (PLTJMP): New macro. * sysdeps/arm/fpu/__longjmp.S: New file, implementation of longjmp() when floating point enabled. * sysdeps/arm/fpu/setjmp.S: Likewise for setjmp(). * sysdeps/arm/__longjmp.S: Remove floating point code. * sysdeps/arm/setjmp.S: Likewise. * sysdeps/arm/bsd-setjmp.S: Call __sigsetjmp by correct name. * sysdeps/arm/bsd-_setjmp.S: Likewise. * sysdeps/arm/memset.S: New file; optimised ARM implementation of memset(). * sysdeps/generic/setsockopt.c (setsockopt): Keep in step with prototype. 1998-03-17 16:16 Philip Blundell <pb@nexus.co.uk> Based on patches from Pat Beirne and Scott Bambrough: * sysdeps/arm/__longjmp.S: Use ip, not r2, as temporary. * sysdeps/arm/bits/fenv.h: New file. * sysdeps/arm/dl-machine.h: New file. Add ELF support. * sysdeps/arm/elf/setjmp.S: Likewise. * sysdeps/arm/elf/start.S: Likewise. * sysdeps/arm/init-first.c: Likewise. * sysdeps/arm/setjmp.S: Call __sigjmp_save through PLT * sysdeps/arm/sysdep.h: Change format of .type directive. Correct comment about floating point to reflect current reality. * sysdeps/unix/arm/brk.S: Support PIC. * sysdeps/unix/arm/sysdep.S (syscall_error): Support PIC and re-entrant code. * sysdeps/unix/sysv/linux/arm/socket.S: Check correctly for error return; call syscall_error through PLT. * sysdeps/unix/sysv/linux/arm/sysdep.h (ENTRY): Correct error jump. 1998-03-04 12:01 Philip Blundell <pb@nexus.co.uk> * sysdeps/unix/sysv/linux/netpacket/packet.h: New file. * sysdeps/unix/sysv/linux/netash/ash.h: Likewise. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Install them.
Diffstat (limited to 'sysdeps/arm/memset.S')
-rw-r--r--sysdeps/arm/memset.S68
1 files changed, 68 insertions, 0 deletions
diff --git a/sysdeps/arm/memset.S b/sysdeps/arm/memset.S
new file mode 100644
index 0000000..a986d68
--- /dev/null
+++ b/sysdeps/arm/memset.S
@@ -0,0 +1,68 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Philip Blundell <philb@gnu.org>
+
+ 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>
+
+/* void *memset (dstpp, c, len) */
+
+ENTRY(memset)
+ mov a4, a1
+ cmp a3, $8 @ at least 8 bytes to do?
+ blt 2f
+ orr a2, a2, a2, lsl $8
+ orr a2, a2, a2, lsl $16
+1:
+ tst a4, $3 @ aligned yet?
+ strneb a2, [a4], $1
+ subne a3, a3, $1
+ bne 1b
+ mov ip, a2
+1:
+ cmp a3, $8 @ 8 bytes still to do?
+ blt 2f
+ stmia a4!, {a2, ip}
+ sub a3, a3, $8
+ cmp a3, $8 @ 8 bytes still to do?
+ blt 2f
+ stmia a4!, {a2, ip}
+ sub a3, a3, $8
+ cmp a3, $8 @ 8 bytes still to do?
+ blt 2f
+ stmia a4!, {a2, ip}
+ sub a3, a3, $8
+ cmp a3, $8 @ 8 bytes still to do?
+ stmgeia a4!, {a2, ip}
+ subge a3, a3, $8
+ bge 1b
+2:
+ movs a3, a3 @ anything left?
+ RETINSTR(moveq,pc,lr) @ nope
+ rsb a3, a3, $7
+ add pc, pc, a3, lsl $2
+ mov r0, r0
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ strb a2, [a4], $1
+ RETINSTR(mov,pc,lr)
+END(memset)