ArmPkg/CompilerIntrinsicsLib: Add memory intrinsics for RVCT

New intrinsics:  __aeabi_memmove, __aeabi_memset, __aeabi_memclr and __aeabi_memclr4



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12293 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm

@@ -0,0 +1,54 @@
+//------------------------------------------------------------------------------ 
+//
+// Copyright (c) 2011, ARM Limited. All rights reserved.
+//
+// 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_memmove
+
+    AREA    Memmove, CODE, READONLY
+
+;
+;VOID
+;EFIAPI
+;__aeabi_memmove (
+; IN  VOID          *Destination,
+; IN  CONST VOID    *Source,
+; IN  UINT32        Size
+; );
+;
+__aeabi_memmove
+  CMP     r2, #0
+  BXEQ    r14
+  CMP     r0, r1
+  BXEQ    r14
+  BHI     memmove_backward
+  BLS     memmove_forward
+
+memmove_forward
+  LDRB    r3, [r1], #1
+  STRB    r3, [r0], #1
+  SUBS    r2, r2, #1
+  BXEQ    r14
+  B       memmove_forward
+
+memmove_backward
+  add     r0, r2
+  add     r1, r2
+memmove_backward_loop
+  LDRB    r3, [r1], #-1
+  STRB    r3, [r0], #-1
+  SUBS    r2, r2, #-1
+  BXEQ    r14
+  B       memmove_backward_loop
+
+  END

ArmPkg/Library/CompilerIntrinsicsLib/Arm/memset.asm

@@ -0,0 +1,55 @@
+//------------------------------------------------------------------------------
+//
+// 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_memset
+    EXPORT  __aeabi_memclr
+    EXPORT  __aeabi_memclr4
+
+    AREA    Memset, CODE, READONLY
+
+;
+;VOID
+;EFIAPI
+;__aeabi_memset (
+; IN  VOID    *Destination,
+; IN  UINT32  Character,
+; IN  UINT32  Size
+; );
+;
+__aeabi_memset
+
+  ; 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
+  bne  L10
+  ldmfd  sp!, {r7, pc}
+
+__aeabi_memclr
+  mov   r1, #0
+  b     __aeabi_memset
+
+__aeabi_memclr4
+  mov   r1, #0
+  b     __aeabi_memset

ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf

@@ -1,8 +1,8 @@
-
 #/** @file
 #  Base Library implementation.
 #
 #  Copyright (c) 2009, Apple Inc. All rights reserved.<BR>
+#  Copyright (c) 2011, ARM Limited. All rights reserved.
 #
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
@@ -32,6 +32,8 @@
   Arm/llsr.asm         | RVCT
   Arm/memcpy.asm       | RVCT
   Arm/memcpy4.asm      | RVCT
+  Arm/memset.asm       | RVCT
+  Arm/memmove.asm      | RVCT
   Arm/uread.asm        | RVCT
   Arm/uwrite.asm       | RVCT
   Arm/lasr.asm         | RVCT