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| author | Corinna Vinschen <corinna@vinschen.de> | 2015-02-17 09:06:51 +0000 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2015-02-17 09:06:51 +0000 |
| commit | 554f33c48d069a0cbd1748c87ee9d4f4e22f8c01 (patch) | |
| tree | 84277d16679c3d2ffecfc14833036895146dc178 /newlib/libc/machine/arm/aeabi_memmove-arm.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-arm.S')
| -rw-r--r-- | newlib/libc/machine/arm/aeabi_memmove-arm.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memmove-arm.S b/newlib/libc/machine/arm/aeabi_memmove-arm.S new file mode 100644 index 000000000..371f21567 --- /dev/null +++ b/newlib/libc/machine/arm/aeabi_memmove-arm.S @@ -0,0 +1,63 @@ +/* + * 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_memmove + .type __aeabi_memmove, %function + ASM_ALIAS __aeabi_memmove4 __aeabi_memmove + ASM_ALIAS __aeabi_memmove8 __aeabi_memmove +__aeabi_memmove: + .cfi_startproc + cmp r0, r1 + add r3, r1, r2 + bhi .L2 +.L4: + sub r2, r0, #1 + b .L3 +.L2: + cmp r0, r3 + addcc r1, r0, r2 + rsbcc r2, r3, r2 + bcs .L4 +.L5: + cmn r3, r2 + ldrneb ip, [r3, #-1]! + strneb ip, [r1, #-1]! + bne .L5 +.L11: + bx lr +.L3: + cmp r1, r3 + ldrneb ip, [r1], #1 + strneb ip, [r2, #1]! + bne .L3 +.L12: + bx lr + .cfi_endproc + .size __aeabi_memmove, . - __aeabi_memmove |