diff options
| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-29 20:55:10 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-29 20:55:10 +0000 |
| commit | 68085d37f88aaaaad97f071e2d0e60b276592cc5 (patch) | |
| tree | 713afab1a37e0ac334e5e540f8b9dc36b12f772f | |
| parent | fa16d12dcc97c20cb4cde053e3e280892d0ccd13 (diff) | |
| download | edk2-platforms-68085d37f88aaaaad97f071e2d0e60b276592cc5.tar.xz | |
ArmPkg/CompilerIntrinsicsLib: Reverse the order of the 'ldrb' instructions in __aeabi_uread4
Change __aeabi_uread4 from:
ldrb r2, [r0, #1]
ldrb r1, [r0]
(...)
to:
ldrb r1, [r0]
ldrb r2, [r0, #1]
(...)
This change is a workaround to handle correctly __aeabi_uread4 on ARM
Versatile Express RTSM.
It should not have any major consequence on the other ARM platforms.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12481 6f19259b-4bc3-4df7-8a09-765794883524
| -rw-r--r-- | ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.asm | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.asm b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.asm index 08a0fd2101..da3ea3e31e 100644 --- a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.asm +++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.asm @@ -1,38 +1,38 @@ -//------------------------------------------------------------------------------ -// -// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> -// -// This program and the accompanying materials -// are licensed and made available under the terms and conditions of the BSD License -// which accompanies this distribution. The full text of the license may be found at -// http://opensource.org/licenses/bsd-license.php -// -// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -// -//------------------------------------------------------------------------------ - - - - EXPORT __aeabi_uread4 - - AREA Uread4, CODE, READONLY - -; -;UINT32 -;EFIAPI -;__aeabi_uread4 ( -; IN VOID *Pointer -; ); -; -__aeabi_uread4 - ldrb r2, [r0, #1] - ldrb r1, [r0] - ldrb r3, [r0, #2] - ldrb r0, [r0, #3] - orr r1, r1, r2, lsl #8 - orr r1, r1, r3, lsl #16 - orr r0, r1, r0, lsl #24 - bx lr - - END +//------------------------------------------------------------------------------
+//
+// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php
+//
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+//------------------------------------------------------------------------------
+
+
+
+ EXPORT __aeabi_uread4
+
+ AREA Uread4, CODE, READONLY
+
+;
+;UINT32
+;EFIAPI
+;__aeabi_uread4 (
+; IN VOID *Pointer
+; );
+;
+__aeabi_uread4
+ ldrb r1, [r0]
+ ldrb r2, [r0, #1]
+ ldrb r3, [r0, #2]
+ ldrb r0, [r0, #3]
+ orr r1, r1, r2, lsl #8
+ orr r1, r1, r3, lsl #16
+ orr r0, r1, r0, lsl #24
+ bx lr
+
+ END
|