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author | Corinna Vinschen <corinna@vinschen.de> | 2015-02-17 09:06:51 +0000 |
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committer | Corinna Vinschen <corinna@vinschen.de> | 2015-02-17 09:06:51 +0000 |
commit | 554f33c48d069a0cbd1748c87ee9d4f4e22f8c01 (patch) | |
tree | 84277d16679c3d2ffecfc14833036895146dc178 /newlib/libc/machine/arm/aeabi_memmove-thumb.S | |
parent | b5d4a4046554d3523581ccc33ed2f56ee94cf175 (diff) | |
download | cygnal-554f33c48d069a0cbd1748c87ee9d4f4e22f8c01.tar.gz cygnal-554f33c48d069a0cbd1748c87ee9d4f4e22f8c01.tar.bz2 cygnal-554f33c48d069a0cbd1748c87ee9d4f4e22f8c01.zip |
* libc/machine/arm/aeabi_memmove.c: New file to support
aeabi_memmove.
* libc/machine/arm/aeabi_memmove-soft.S: Ditto.
* libc/machine/arm/aeabi_memmove-arm.S: Ditto.
* libc/machine/arm/aeabi_memmove-thumb.S: Ditto.
* libc/machine/arm/aeabi_memmove-thumb2.S: Ditto.
* libc/machine/arm/Makefile.am: Add dependencies.
* libc/machine/arm/Makefile.in: Regenerated.
Diffstat (limited to 'newlib/libc/machine/arm/aeabi_memmove-thumb.S')
-rw-r--r-- | newlib/libc/machine/arm/aeabi_memmove-thumb.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memmove-thumb.S b/newlib/libc/machine/arm/aeabi_memmove-thumb.S new file mode 100644 index 000000000..52e9e07b6 --- /dev/null +++ b/newlib/libc/machine/arm/aeabi_memmove-thumb.S @@ -0,0 +1,64 @@ +/* + * 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_memmove + .type __aeabi_memmove, %function + ASM_ALIAS __aeabi_memmove4 __aeabi_memmove + ASM_ALIAS __aeabi_memmove8 __aeabi_memmove +__aeabi_memmove: + .cfi_startproc + push {r4, lr} + cmp r0, r1 + bls .L9 + adds r3, r1, r2 + cmp r0, r3 + bcc .L3 +.L9: + movs r3, #0 + b .L4 +.L3: + subs r3, r3, r2 +.L5: + subs r2, r2, #1 + bcc .L10 + ldrb r1, [r3, r2] + strb r1, [r0, r2] + b .L5 +.L4: + cmp r3, r2 + beq .L10 + ldrb r4, [r1, r3] + strb r4, [r0, r3] + adds r3, r3, #1 + b .L4 +.L10: + pop {r4, pc} + .cfi_endproc + .size __aeabi_memmove, . - __aeabi_memmove |