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* libc/machine/arm/aeabi_memclr.c: New file to support

Browse Source 
aeabi_memclr.
	* libc/machine/arm/aeabi_memset.c: New file to support
	aeabi_memset.
	* libc/machine/arm/aeabi_memset-soft.S: Ditto.
	* libc/machine/arm/aeabi_memset-arm.S: Ditto.
	* libc/machine/arm/aeabi_memset-thumb.S: Ditto.
	* libc/machine/arm/aeabi_memset-thumb2.S: Ditto.
	* libc/machine/arm/Makefile.am: Add dependencies.
	* libc/machine/arm/Makefile.in: Regenerated.
This commit is contained in:
Corinna Vinschen
2015-02-17 09:26:54 +00:00
parent 554f33c48d
commit 72ba8b107a
9 changed files with 555 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
newlib/ChangeLog
View File

@@ -1,3 +1,16 @@
2015-02-17 Hale Wang <hale.wang@arm.com>
* libc/machine/arm/aeabi_memclr.c: New file to support
aeabi_memclr.
* libc/machine/arm/aeabi_memset.c: New file to support
aeabi_memset.
* libc/machine/arm/aeabi_memset-soft.S: Ditto.
* libc/machine/arm/aeabi_memset-arm.S: Ditto.
* libc/machine/arm/aeabi_memset-thumb.S: Ditto.
* libc/machine/arm/aeabi_memset-thumb2.S: Ditto.
* libc/machine/arm/Makefile.am: Add dependencies.
* libc/machine/arm/Makefile.in: Regenerated.
2015-02-17 Hale Wang <hale.wang@arm.com>
* libc/machine/arm/aeabi_memmove.c: New file to support

11
newlib/libc/machine/arm/Makefile.am
View File

@@ -50,7 +50,8 @@ endif !OPT_SIZE
lib_a_SOURCES = setjmp.S access.c strcmp.S strcpy.c \
$(MEMCPY_SRC) $(MEMCHR_SRC) $(STRLEN_SRC) \
strlen-armv7.S aeabi_memcpy.c aeabi_memcpy-armv7a.S \
aeabi_memmove.c aeabi_memmove-soft.S
aeabi_memmove.c aeabi_memmove-soft.S \
aeabi_memset.c aeabi_memset-soft.S aeabi_memclr.c
lib_a_CCASFLAGS=$(AM_CCASFLAGS)
lib_a_CFLAGS = $(AM_CFLAGS)
@@ -64,7 +65,9 @@ MEMCPY_DEP=memcpy-armv7a.S memcpy-armv7m.S
STRCMP_DEP=strcmp-arm-tiny.S strcmp-armv4.S strcmp-armv4t.S strcmp-armv6.S \
strcmp-armv6m.S strcmp-armv7.S strcmp-armv7m.S
AEABI_MEMMOVE_DEP=aeabi_memmove-thumb.S aeabi_memmove-thumb2.S \
aeabi_memmove-arm.S
aeabi_memmove-arm.S
AEABI_MEMSET_DEP=aeabi_memset-thumb.S aeabi_memset-thumb2.S \
aeabi_memset-arm.S
$(lpfx)memcpy.o: $(MEMCPY_DEP)
@@ -77,3 +80,7 @@ $(lpfx)strcmp.obj: $(STRCMP_DEP)
$(lpfx)aeabi_memmove.o: $(AEABI_MEMMOVE_DEP)
$(lpfx)aeabi_memmove.obj: $(AEABI_MEMMOVE_DEP)
$(lpfx)aeabi_memset.o: $(AEABI_MEMSET_DEP)
$(lpfx)aeabi_memset.obj: $(AEABI_MEMSET_DEP)

34
newlib/libc/machine/arm/Makefile.in
View File

@@ -87,7 +87,9 @@ am_lib_a_OBJECTS = lib_a-setjmp.$(OBJEXT) lib_a-access.$(OBJEXT) \
lib_a-aeabi_memcpy.$(OBJEXT) \
lib_a-aeabi_memcpy-armv7a.$(OBJEXT) \
lib_a-aeabi_memmove.$(OBJEXT) \
lib_a-aeabi_memmove-soft.$(OBJEXT)
lib_a-aeabi_memmove-soft.$(OBJEXT) \
lib_a-aeabi_memset.$(OBJEXT) lib_a-aeabi_memset-soft.$(OBJEXT) \
lib_a-aeabi_memclr.$(OBJEXT)
lib_a_OBJECTS = $(am_lib_a_OBJECTS)
DEFAULT_INCLUDES = -I.@am__isrc@
depcomp =
@@ -235,7 +237,8 @@ noinst_LIBRARIES = lib.a
lib_a_SOURCES = setjmp.S access.c strcmp.S strcpy.c \
$(MEMCPY_SRC) $(MEMCHR_SRC) $(STRLEN_SRC) \
strlen-armv7.S aeabi_memcpy.c aeabi_memcpy-armv7a.S \
aeabi_memmove.c aeabi_memmove-soft.S
aeabi_memmove.c aeabi_memmove-soft.S \
aeabi_memset.c aeabi_memset-soft.S aeabi_memclr.c
lib_a_CCASFLAGS = $(AM_CCASFLAGS)
lib_a_CFLAGS = $(AM_CFLAGS)
@@ -248,7 +251,10 @@ STRCMP_DEP = strcmp-arm-tiny.S strcmp-armv4.S strcmp-armv4t.S strcmp-armv6.S \
strcmp-armv6m.S strcmp-armv7.S strcmp-armv7m.S
AEABI_MEMMOVE_DEP = aeabi_memmove-thumb.S aeabi_memmove-thumb2.S \
aeabi_memmove-arm.S
aeabi_memmove-arm.S
AEABI_MEMSET_DEP = aeabi_memset-thumb.S aeabi_memset-thumb2.S \
aeabi_memset-arm.S
all: all-am
@@ -350,6 +356,12 @@ lib_a-aeabi_memmove-soft.o: aeabi_memmove-soft.S
lib_a-aeabi_memmove-soft.obj: aeabi_memmove-soft.S
$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CCASFLAGS) $(CCASFLAGS) -c -o lib_a-aeabi_memmove-soft.obj `if test -f 'aeabi_memmove-soft.S'; then $(CYGPATH_W) 'aeabi_memmove-soft.S'; else $(CYGPATH_W) '$(srcdir)/aeabi_memmove-soft.S'; fi`
lib_a-aeabi_memset-soft.o: aeabi_memset-soft.S
$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CCASFLAGS) $(CCASFLAGS) -c -o lib_a-aeabi_memset-soft.o `test -f 'aeabi_memset-soft.S' || echo '$(srcdir)/'`aeabi_memset-soft.S
lib_a-aeabi_memset-soft.obj: aeabi_memset-soft.S
$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CCASFLAGS) $(CCASFLAGS) -c -o lib_a-aeabi_memset-soft.obj `if test -f 'aeabi_memset-soft.S'; then $(CYGPATH_W) 'aeabi_memset-soft.S'; else $(CYGPATH_W) '$(srcdir)/aeabi_memset-soft.S'; fi`
.c.o:
$(COMPILE) -c $<
@@ -386,6 +398,18 @@ lib_a-aeabi_memmove.o: aeabi_memmove.c
lib_a-aeabi_memmove.obj: aeabi_memmove.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aeabi_memmove.obj `if test -f 'aeabi_memmove.c'; then $(CYGPATH_W) 'aeabi_memmove.c'; else $(CYGPATH_W) '$(srcdir)/aeabi_memmove.c'; fi`
lib_a-aeabi_memset.o: aeabi_memset.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aeabi_memset.o `test -f 'aeabi_memset.c' || echo '$(srcdir)/'`aeabi_memset.c
lib_a-aeabi_memset.obj: aeabi_memset.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aeabi_memset.obj `if test -f 'aeabi_memset.c'; then $(CYGPATH_W) 'aeabi_memset.c'; else $(CYGPATH_W) '$(srcdir)/aeabi_memset.c'; fi`
lib_a-aeabi_memclr.o: aeabi_memclr.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aeabi_memclr.o `test -f 'aeabi_memclr.c' || echo '$(srcdir)/'`aeabi_memclr.c
lib_a-aeabi_memclr.obj: aeabi_memclr.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aeabi_memclr.obj `if test -f 'aeabi_memclr.c'; then $(CYGPATH_W) 'aeabi_memclr.c'; else $(CYGPATH_W) '$(srcdir)/aeabi_memclr.c'; fi`
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
@@ -569,6 +593,10 @@ $(lpfx)aeabi_memmove.o: $(AEABI_MEMMOVE_DEP)
$(lpfx)aeabi_memmove.obj: $(AEABI_MEMMOVE_DEP)
$(lpfx)aeabi_memset.o: $(AEABI_MEMSET_DEP)
$(lpfx)aeabi_memset.obj: $(AEABI_MEMSET_DEP)
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

45
newlib/libc/machine/arm/aeabi_memclr.c Normal file
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@@ -0,0 +1,45 @@
/*
* Copyright (c) 2015 ARM Ltd
* 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. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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 <stddef.h>
#include <_ansi.h>
/* Support the alias for the __aeabi_memclr which may
assume memory alignment. */
void __aeabi_memclr4 (void *dest, size_t n)
_ATTRIBUTE ((alias ("__aeabi_memclr")));
void __aeabi_memclr8 (void *dest, size_t n)
_ATTRIBUTE ((alias ("__aeabi_memclr")));
/* Support the routine __aeabi_memclr. */
void __aeabi_memclr (void *dest, size_t n)
{
extern void __aeabi_memset (void *dest, size_t n, int c);
__aeabi_memset (dest, n, 0);
}

113
newlib/libc/machine/arm/aeabi_memset-arm.S Normal file
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@@ -0,0 +1,113 @@
/*
* Copyright (c) 2015 ARM Ltd
* 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. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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.
*/
.arm
.syntax divided
.global __aeabi_memset
.type __aeabi_memset, %function
ASM_ALIAS __aeabi_memset4 __aeabi_memset
ASM_ALIAS __aeabi_memset8 __aeabi_memset
__aeabi_memset:
.cfi_startproc
tst r0, #3
stmfd sp!, {r4, r5, lr}
beq .L14
cmp r1, #0
sub r1, r1, #1
ldmeqfd sp!, {r4, r5, pc}
uxtb lr, r2
mov r3, r0
b .L4
.L6:
cmp r1, #0
mov r1, ip
ldmeqfd sp!, {r4, r5, pc}
.L4:
strb lr, [r3], #1
tst r3, #3
sub ip, r1, #1
bne .L6
.L2:
cmp r1, #3
bls .L11
uxtb lr, r2
cmp r1, #15
orr lr, lr, lr, asl #8
orr lr, lr, lr, asl #16
bls .L15
sub r4, r1, #16
add ip, r3, #16
mov r4, r4, lsr #4
add r5, r4, #2
add r5, r3, r5, lsl #4
.L10:
str lr, [ip, #-16]
add ip, ip, #16
str lr, [ip, #-28]
str lr, [ip, #-24]
str lr, [ip, #-20]
cmp ip, r5
bne .L10
and r1, r1, #15
add ip, r4, #1
cmp r1, #3
add ip, r3, ip, lsl #4
bls .L28
.L9:
sub r3, r1, #4
bic r3, r3, #3
add r3, r3, #4
add r3, ip, r3
.L12:
str lr, [ip], #4
cmp r3, ip
bne .L12
and r1, r1, #3
.L11:
cmp r1, #0
uxtbne r2, r2
addne r1, r3, r1
beq .L29
.L13:
strb r2, [r3], #1
cmp r3, r1
bne .L13
ldmfd sp!, {r4, r5, pc}
.L29:
ldmfd sp!, {r4, r5, pc}
.L14:
mov r3, r0
b .L2
.L15:
mov ip, r3
b .L9
.L28:
mov r3, ip
b .L11
.cfi_endproc
.size __aeabi_memset, . - __aeabi_memset

52
newlib/libc/machine/arm/aeabi_memset-soft.S Normal file
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@@ -0,0 +1,52 @@
/*
* Copyright (c) 2015 ARM Ltd
* 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. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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 "arm_asm.h"
.macro ASM_ALIAS new old
.global \new
.type \new, %function
#if defined (__thumb__)
.thumb_set \new, \old
#else
.set \new, \old
#endif
.endm
/* NOTE: This ifdef MUST match the one in aeabi_memset.c. */
#if !defined (__SOFTFP__)
# if defined (__thumb2__)
# include "aeabi_memset-thumb2.S"
# elif defined (__thumb__)
# include "aeabi_memset-thumb.S"
# else
# include "aeabi_memset-arm.S"
# endif
#endif

118
newlib/libc/machine/arm/aeabi_memset-thumb.S Normal file
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@@ -0,0 +1,118 @@
/*
* Copyright (c) 2015 ARM Ltd
* 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. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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.
*/
.thumb
.syntax unified
.global __aeabi_memset
.type __aeabi_memset, %function
ASM_ALIAS __aeabi_memset4 __aeabi_memset
ASM_ALIAS __aeabi_memset8 __aeabi_memset
__aeabi_memset:
.cfi_startproc
push {r4, r5, r6, lr}
lsls r3, r0, #30
beq .L14
subs r4, r1, #1
cmp r1, #0
beq .L16
uxtb r6, r2
movs r3, r0
movs r5, #3
b .L4
.L6:
subs r1, r4, #1
cmp r4, #0
beq .L16
movs r4, r1
.L4:
adds r3, r3, #1
subs r1, r3, #1
strb r6, [r1]
tst r3, r5
bne .L6
.L2:
cmp r4, #3
bls .L11
movs r5, #255
ands r5, r2
lsls r1, r5, #8
orrs r5, r1
lsls r1, r5, #16
orrs r5, r1
cmp r4, #15
bls .L9
movs r6, r4
subs r6, r6, #16
lsrs r6, r6, #4
adds r6, r6, #1
lsls r6, r6, #4
movs r1, r3
adds r3, r3, r6
.L10:
str r5, [r1]
str r5, [r1, #4]
str r5, [r1, #8]
str r5, [r1, #12]
adds r1, r1, #16
cmp r3, r1
bne .L10
movs r1, #15
ands r4, r1
cmp r4, #3
bls .L11
.L9:
subs r6, r4, #4
lsrs r6, r6, #2
adds r6, r6, #1
lsls r6, r6, #2
movs r1, r3
adds r3, r3, r6
.L12:
stmia r1!, {r5}
cmp r3, r1
bne .L12
movs r1, #3
ands r4, r1
.L11:
cmp r4, #0
beq .L16
uxtb r2, r2
adds r4, r3, r4
.L13:
strb r2, [r3]
adds r3, r3, #1
cmp r4, r3
bne .L13
.L16:
pop {r4, r5, r6, pc}
.L14:
movs r4, r1
movs r3, r0
b .L2
.cfi_endproc
.size __aeabi_memset, . - __aeabi_memset

109
newlib/libc/machine/arm/aeabi_memset-thumb2.S Normal file
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@@ -0,0 +1,109 @@
/*
* Copyright (c) 2015 ARM Ltd
* 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. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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.
*/
.thumb
.syntax unified
.global __aeabi_memset
.type __aeabi_memset, %function
ASM_ALIAS __aeabi_memset4 __aeabi_memset
ASM_ALIAS __aeabi_memset8 __aeabi_memset
__aeabi_memset:
.cfi_startproc
push {r4, r5, r6}
lsls r4, r0, #30
beq .L14
subs r4, r1, #1
cmp r1, #0
beq .L16
uxtb r5, r2
mov r3, r0
b .L4
.L6:
subs r1, r4, #1
cbz r4, .L16
mov r4, r1
.L4:
strb r5, [r3], #1
lsls r1, r3, #30
bne .L6
.L2:
cmp r4, #3
bls .L11
uxtb r5, r2
orr r5, r5, r5, lsl #8
cmp r4, #15
orr r5, r5, r5, lsl #16
bls .L9
add r1, r3, #16
mov r6, r4
.L10:
subs r6, r6, #16
cmp r6, #15
str r5, [r1, #-16]
str r5, [r1, #-12]
str r5, [r1, #-8]
str r5, [r1, #-4]
add r1, r1, #16
bhi .L10
sub r1, r4, #16
bic r1, r1, #15
and r4, r4, #15
adds r1, r1, #16
cmp r4, #3
add r3, r3, r1
bls .L11
.L9:
mov r6, r3
mov r1, r4
.L12:
subs r1, r1, #4
cmp r1, #3
str r5, [r6], #4
bhi .L12
subs r1, r4, #4
bic r1, r1, #3
adds r1, r1, #4
add r3, r3, r1
and r4, r4, #3
.L11:
cbz r4, .L16
uxtb r2, r2
add r4, r4, r3
.L13:
strb r2, [r3], #1
cmp r3, r4
bne .L13
.L16:
pop {r4, r5, r6}
bx lr
.L14:
mov r4, r1
mov r3, r0
b .L2
.cfi_endproc
.size __aeabi_memset, . - __aeabi_memset

65
newlib/libc/machine/arm/aeabi_memset.c Normal file
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@@ -0,0 +1,65 @@
/*
* Copyright (c) 2015 ARM Ltd
* 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. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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 <stddef.h>
#include <_ansi.h>
/* According to the run-time ABI for the ARM Architecture, this
function is allowed to corrupt only the integer core register
permitted to be corrupted by the [AAPCS] (r0-r3, ip, lr, and
CPSR).
Therefore, we can't just simply use alias to support the function
aeabi_memset for the targets with FP register. Instead, versions
for these specific targets are written in assembler (in
aeabi_memset-soft.S). */
/* NOTE: This ifdef MUST match the one in aeabi_memset-soft.S. */
#if !defined (__SOFTFP__)
/* Defined in aeabi_memset-soft.S. */
#else
/* Support the alias for the __aeabi_memset which may
assume memory alignment. */
void __aeabi_memset4 (void *dest, size_t n, int c)
_ATTRIBUTE ((alias ("__aeabi_memset")));
void __aeabi_memset8 (void *dest, size_t n, int c)
_ATTRIBUTE ((alias ("__aeabi_memset")));
/* Support the routine __aeabi_memset. Can't alias to memset
because it's not defined in the same translation unit. */
void __aeabi_memset (void *dest, size_t n, int c)
{
/*Note that relative to ANSI memset, __aeabi_memset hase the order
of its second and third arguments reversed. */
extern void memset (void *dest, int c, size_t n);
memset (dest, c, n);
}
#endif