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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-thumb.S
parent554f33c48d069a0cbd1748c87ee9d4f4e22f8c01 (diff)
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* 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-thumb.S')
-rw-r--r--newlib/libc/machine/arm/aeabi_memset-thumb.S118
1 files changed, 118 insertions, 0 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memset-thumb.S b/newlib/libc/machine/arm/aeabi_memset-thumb.S
new file mode 100644
index 000000000..5a4b808b4
--- /dev/null
+++ b/newlib/libc/machine/arm/aeabi_memset-thumb.S
@@ -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