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author | Roland McGrath <roland@gnu.org> | 2005-05-24 06:18:37 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2005-05-24 06:18:37 +0000 |
commit | ce9b3bc17a7abc5b729b9e2cc72eb207a3617328 (patch) | |
tree | 7ccac7afcfaae36311c75b36001588534184718f /sysdeps/arm/strlen.S | |
parent | 88b8441a81c7bc9414a97a0a123c09b6c724f80a (diff) | |
download | glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.tar.gz glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.tar.xz glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.zip |
Move arm port to ports repository cvs/fedora-glibc-20050524T1606
2005-05-23 Roland McGrath <roland@redhat.com> * sysdeps/arm, sysdeps/unix/arm, sysdeps/unix/sysv/linux/arm: Subdirectories moved to ports repository. * configure.in (base_machine): Remove arm* and thumb* patterns. * shlib-versions (arm.*-.*-linux.*): Remove this pattern.
Diffstat (limited to 'sysdeps/arm/strlen.S')
-rw-r--r-- | sysdeps/arm/strlen.S | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/sysdeps/arm/strlen.S b/sysdeps/arm/strlen.S deleted file mode 100644 index 86e16652e4..0000000000 --- a/sysdeps/arm/strlen.S +++ /dev/null @@ -1,73 +0,0 @@ -/* Copyright (C) 1998, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Code contributed by Matthew Wilcox <willy@odie.barnet.ac.uk> - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> - -/* size_t strlen(const char *S) - * entry: r0 -> string - * exit: r0 = len - */ - -ENTRY(strlen) - bic r1, r0, $3 @ addr of word containing first byte - ldr r2, [r1], $4 @ get the first word - ands r3, r0, $3 @ how many bytes are duff? - rsb r0, r3, $0 @ get - that number into counter. - beq Laligned @ skip into main check routine if no - @ more -#ifdef __ARMEB__ - orr r2, r2, $0xff000000 @ set this byte to non-zero - subs r3, r3, $1 @ any more to do? - orrgt r2, r2, $0x00ff0000 @ if so, set this byte - subs r3, r3, $1 @ more? - orrgt r2, r2, $0x0000ff00 @ then set. -#else - orr r2, r2, $0x000000ff @ set this byte to non-zero - subs r3, r3, $1 @ any more to do? - orrgt r2, r2, $0x0000ff00 @ if so, set this byte - subs r3, r3, $1 @ more? - orrgt r2, r2, $0x00ff0000 @ then set. -#endif -Laligned: @ here, we have a word in r2. Does it - tst r2, $0x000000ff @ contain any zeroes? - tstne r2, $0x0000ff00 @ - tstne r2, $0x00ff0000 @ - tstne r2, $0xff000000 @ - addne r0, r0, $4 @ if not, the string is 4 bytes longer - ldrne r2, [r1], $4 @ and we continue to the next word - bne Laligned @ -Llastword: @ drop through to here once we find a -#ifdef __ARMEB__ - tst r2, $0xff000000 @ word that has a zero byte in it - addne r0, r0, $1 @ - tstne r2, $0x00ff0000 @ and add up to 3 bytes on to it - addne r0, r0, $1 @ - tstne r2, $0x0000ff00 @ (if first three all non-zero, 4th - addne r0, r0, $1 @ must be zero) -#else - tst r2, $0x000000ff @ word that has a zero byte in it - addne r0, r0, $1 @ - tstne r2, $0x0000ff00 @ and add up to 3 bytes on to it - addne r0, r0, $1 @ - tstne r2, $0x00ff0000 @ (if first three all non-zero, 4th - addne r0, r0, $1 @ must be zero) -#endif - DO_RET(lr) -END(strlen) -libc_hidden_builtin_def (strlen) |