84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
244 lines
7.5 KiB
ArmAsm
244 lines
7.5 KiB
ArmAsm
/* $NetBSD: memset.S,v 1.6 2013/11/30 21:09:11 joerg Exp $ */
|
|
|
|
/*
|
|
* Copyright 2003 Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Steve C. Woodford for Wasabi Systems, Inc.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
|
* 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.
|
|
*/
|
|
/*
|
|
* Copyright (c) 1995 Mark Brinicombe.
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Mark Brinicombe.
|
|
* 4. The name of the company nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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>
|
|
|
|
#if defined(__ARM_EABI__) && !defined(BZER0)
|
|
STRONG_ALIAS(__aeabi_memset, memset)
|
|
#endif
|
|
|
|
/*
|
|
* memset: Sets a block of memory to the specified value
|
|
*
|
|
* On entry:
|
|
* r0 - dest address
|
|
* r1 - byte to write
|
|
* r2 - number of bytes to write
|
|
*
|
|
* On exit:
|
|
* r0 - dest address
|
|
*/
|
|
#ifdef _BZERO
|
|
/* LINTSTUB: Func: void bzero(void *, size_t) */
|
|
ENTRY(bzero)
|
|
mov r3, #0x00
|
|
#else
|
|
/* LINTSTUB: Func: void *memset(void *, int, size_t) */
|
|
ENTRY(memset)
|
|
and r3, r1, #0xff /* We deal with bytes */
|
|
mov r1, r2
|
|
#endif
|
|
cmp r1, #0x04 /* Do we have less than 4 bytes */
|
|
mov ip, r0
|
|
blt .Lmemset_lessthanfour
|
|
|
|
/* Ok first we will word align the address */
|
|
ands r2, ip, #0x03 /* Get the bottom two bits */
|
|
bne .Lmemset_wordunaligned /* The address is not word aligned */
|
|
|
|
/* We are now word aligned */
|
|
.Lmemset_wordaligned:
|
|
#ifndef _BZERO
|
|
orr r3, r3, r3, lsl #8 /* Extend value to 16-bits */
|
|
#endif
|
|
#ifdef _ARM_ARCH_DWORD_OK
|
|
tst ip, #0x04 /* Quad-align for Xscale */
|
|
#else
|
|
cmp r1, #0x10
|
|
#endif
|
|
#ifndef _BZERO
|
|
orr r3, r3, r3, lsl #16 /* Extend value to 32-bits */
|
|
#endif
|
|
#ifdef _ARM_ARCH_DWORD_OK
|
|
subne r1, r1, #0x04 /* Quad-align if necessary */
|
|
strne r3, [ip], #0x04
|
|
cmp r1, #0x10
|
|
#endif
|
|
blt .Lmemset_loop4 /* If less than 16 then use words */
|
|
mov r2, r3 /* Duplicate data */
|
|
cmp r1, #0x80 /* If < 128 then skip the big loop */
|
|
blt .Lmemset_loop32
|
|
|
|
/* Do 128 bytes at a time */
|
|
.Lmemset_loop128:
|
|
subs r1, r1, #0x80
|
|
#ifdef _ARM_ARCH_DWORD_OK
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
#else
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
#endif
|
|
bgt .Lmemset_loop128
|
|
RETc(eq) /* Zero length so just exit */
|
|
|
|
add r1, r1, #0x80 /* Adjust for extra sub */
|
|
|
|
/* Do 32 bytes at a time */
|
|
.Lmemset_loop32:
|
|
subs r1, r1, #0x20
|
|
#ifdef _ARM_ARCH_DWORD_OK
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
#else
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
#endif
|
|
bgt .Lmemset_loop32
|
|
RETc(eq) /* Zero length so just exit */
|
|
|
|
adds r1, r1, #0x10 /* Partially adjust for extra sub */
|
|
|
|
/* Deal with 16 bytes or more */
|
|
#ifdef _ARM_ARCH_DWORD_OK
|
|
strdge r2, r3, [ip], #0x08
|
|
strdge r2, r3, [ip], #0x08
|
|
#else
|
|
stmiage ip!, {r2-r3}
|
|
stmiage ip!, {r2-r3}
|
|
#endif
|
|
RETc(eq) /* Zero length so just exit */
|
|
|
|
addlt r1, r1, #0x10 /* Possibly adjust for extra sub */
|
|
|
|
/* We have at least 4 bytes so copy as words */
|
|
.Lmemset_loop4:
|
|
subs r1, r1, #0x04
|
|
strge r3, [ip], #0x04
|
|
bgt .Lmemset_loop4
|
|
RETc(eq) /* Zero length so just exit */
|
|
|
|
#ifdef _ARM_ARCH_DWORD_OK
|
|
/* Compensate for 64-bit alignment check */
|
|
adds r1, r1, #0x04
|
|
RETc(eq)
|
|
cmp r1, #2
|
|
#else
|
|
cmp r1, #-2
|
|
#endif
|
|
|
|
strb r3, [ip], #0x01 /* Set 1 byte */
|
|
strbge r3, [ip], #0x01 /* Set another byte */
|
|
strbgt r3, [ip] /* and a third */
|
|
RET /* Exit */
|
|
|
|
.Lmemset_wordunaligned:
|
|
rsb r2, r2, #0x004
|
|
strb r3, [ip], #0x01 /* Set 1 byte */
|
|
cmp r2, #0x02
|
|
strbge r3, [ip], #0x01 /* Set another byte */
|
|
sub r1, r1, r2
|
|
strbgt r3, [ip], #0x01 /* and a third */
|
|
cmp r1, #0x04 /* More than 4 bytes left? */
|
|
bge .Lmemset_wordaligned /* Yup */
|
|
|
|
.Lmemset_lessthanfour:
|
|
cmp r1, #0x00
|
|
RETc(eq) /* Zero length so exit */
|
|
strb r3, [ip], #0x01 /* Set 1 byte */
|
|
cmp r1, #0x02
|
|
strbge r3, [ip], #0x01 /* Set another byte */
|
|
strbgt r3, [ip] /* and a third */
|
|
RET /* Exit */
|
|
#ifdef _BZERO
|
|
END(bzero)
|
|
#else
|
|
END(memset)
|
|
#endif
|