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author | Olivier Martin <olivier.martin@arm.com> | 2014-11-11 00:52:11 +0000 |
---|---|---|
committer | oliviermartin <oliviermartin@Edk2> | 2014-11-11 00:52:11 +0000 |
commit | 284fb5c811fb7784ee3afa753dbdf5b389c4cdce (patch) | |
tree | 5c006b75429d4c12199763eb3ba370708ab51181 /ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm | |
parent | fb7ea6114a780b2fe0da56156d65fa7659ffe2e2 (diff) | |
download | edk2-284fb5c811fb7784ee3afa753dbdf5b389c4cdce.tar.gz edk2-284fb5c811fb7784ee3afa753dbdf5b389c4cdce.tar.bz2 edk2-284fb5c811fb7784ee3afa753dbdf5b389c4cdce.zip |
ArmPkg/CompilerIntrinsicesLib: Fixed memmove() and memset()
- Fixed memmove when going backward: the copy started one byte
after the end of the region to copy
- memset: - removed unused register
- fixed arguments size and character arguments were
actually reversed
- Added memmove() to ARM32 GCC
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16328 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm')
-rwxr-xr-x | ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm | 39 |
1 files changed, 15 insertions, 24 deletions
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm index 74e0243048..bae3c1fada 100755 --- a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm +++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm @@ -1,6 +1,7 @@ //------------------------------------------------------------------------------
//
// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+// Copyright (c) 2014, ARM Ltd. All rights reserved.<BR>
//
// This program and the accompanying materials
// are licensed and made available under the terms and conditions of the BSD License
@@ -19,41 +20,31 @@ AREA Memset, CODE, READONLY
+; void __aeabi_memclr4(void *dest, size_t n);
+; void __aeabi_memclr(void *dest, size_t n);
+__aeabi_memclr
+__aeabi_memclr4
+ mov r2, #0
+
;
;VOID
;EFIAPI
;__aeabi_memset (
; IN VOID *Destination,
-; IN UINT32 Character,
-; IN UINT32 Size
+; IN UINT32 Size,
+; IN UINT32 Character
; );
;
__aeabi_memset
-
+ cmp r1, #0
+ bxeq lr
; args = 0, pretend = 0, frame = 0
; frame_needed = 1, uses_anonymous_args = 0
- stmfd sp!, {r7, lr}
- mov ip, #0
- add r7, sp, #0
- mov lr, r0
- b L9
L10
- and r3, r1, #255
- add ip, ip, #1
- strb r3, [lr], #1
-L9
- cmp ip, r2
+ strb r2, [r0], #1
+ subs r1, r1, #1
+ ; While size is not 0
bne L10
- ldmfd sp!, {r7, pc}
-
-__aeabi_memclr
- mov r2, r1
- mov r1, #0
- b __aeabi_memset
-
-__aeabi_memclr4
- mov r2, r1
- mov r1, #0
- b __aeabi_memset
+ bx lr
END
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