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Makefile.inc
(139 B)
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bcopy.S
(144 B)
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bzero.S
(1.62 KB)
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ffs.S
(3.14 KB)
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memcmp.S
(6.08 KB)
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memcpy.S
(224 B)
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memcpy_arm.S
(8.28 KB)
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memcpy_xscale.S
(43.22 KB)
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memmove.S
(13.27 KB)
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memset.S
(7.56 KB)
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strcmp.S
(1.71 KB)
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strlen.S
(2.24 KB)
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strncmp.S
(1.94 KB)
Editing: strlen.S
/*- * Copyright (c) 2005 Olivier Houchard * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <machine/asm.h> __FBSDID("$FreeBSD$"); .syntax unified ENTRY(strlen) mov r1, #0 /* Check that the pointer is aligned on 32 bits. */ ands r3, r0, #3 beq .Loop sub r0, r0, r3 ldr r2, [r0] add r0, r0, #4 cmp r3, #2 blt .Ldo_3 bgt .Ldo_1 /* So that the N bit is set. */ cmp r3, #0 b .Ldo_2 .Loop: ldr r2, [r0] add r0, r0, #4 #ifndef __ARMEB__ ands r3, r2, #0x000000ff #else ands r3, r2, #0xff000000 #endif it ne addne r1, r1, #1 .Ldo_3: itt ne #ifndef __ARMEB__ andsne r3, r2, #0x0000ff00 #else andsne r3, r2, #0x00ff0000 #endif addne r1, r1, #1 .Ldo_2: itt ne #ifndef __ARMEB__ andsne r3, r2, #0x00ff0000 #else andsne r3, r2, #0x0000ff00 #endif addne r1, r1, #1 .Ldo_1: ittt ne #ifndef __ARMEB__ andsne r3, r2, #0xff000000 #else andsne r3, r2, #0x000000ff #endif addne r1, r1, #1 bne .Loop .Lexit: mov r0, r1 RET END(strlen) .section .note.GNU-stack,"",%progbits
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