summaryrefslogtreecommitdiffstats
path: root/newlib/libc/machine/arm/aeabi_memset-arm.S
diff options
context:
space:
mode:
authorCorinna Vinschen <corinna@vinschen.de>2015-02-17 09:26:54 +0000
committerCorinna Vinschen <corinna@vinschen.de>2015-02-17 09:26:54 +0000
commit72ba8b107a891d6b4094f1fc74b548062dd2ead7 (patch)
treedf19d38dd573f8583770b98053aaca69f2338df7 /newlib/libc/machine/arm/aeabi_memset-arm.S
parent554f33c48d069a0cbd1748c87ee9d4f4e22f8c01 (diff)
downloadcygnal-72ba8b107a891d6b4094f1fc74b548062dd2ead7.tar.gz
cygnal-72ba8b107a891d6b4094f1fc74b548062dd2ead7.tar.bz2
cygnal-72ba8b107a891d6b4094f1fc74b548062dd2ead7.zip
* 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.
Diffstat (limited to 'newlib/libc/machine/arm/aeabi_memset-arm.S')
-rw-r--r--newlib/libc/machine/arm/aeabi_memset-arm.S113
1 files changed, 113 insertions, 0 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memset-arm.S b/newlib/libc/machine/arm/aeabi_memset-arm.S
new file mode 100644
index 000000000..4993e9a78
--- /dev/null
+++ b/newlib/libc/machine/arm/aeabi_memset-arm.S
@@ -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