Add ArmPlatformPkg from ARM Ltd. patch.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11291 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/PrePeiCore/Exception.S

@@ -0,0 +1,106 @@
+//
+//  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.             
+#
+#
+
+#include <AsmMacroIoLib.h>
+#include <Base.h>
+#include <AutoGen.h>
+
+#start of the code section
+.text
+.align 5
+
+# IMPORT
+GCC_ASM_IMPORT(PeiCommonExceptionEntry)
+
+# EXPORT
+GCC_ASM_EXPORT(PeiVectorTable)
+
+//============================================================
+//Default Exception Handlers
+//============================================================
+  
+//FIXME: One of the EDK2 tool is broken. It does not look to respect the alignment. Even, if we specify 32-byte alignment for this file.
+Dummy1: .word      0
+Dummy2: .word      0
+  
+ASM_PFX(PeiVectorTable):
+  b _DefaultResetHandler
+  b _DefaultUndefined
+  b _DefaultSWI
+  b _DefaultPrefetchAbort
+  b _DefaultDataAbort
+  b _DefaultReserved
+  b _DefaultIrq
+  b _DefaultFiq
+
+//
+// Default Exception handlers: There is no plan to return from any of these exceptions.
+// No context saving at all.
+//
+_DefaultResetHandler:
+  mov  r1, lr
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #0
+  blx  ASM_PFX(PeiCommonExceptionEntry)
+
+_DefaultUndefined:
+  sub  r1, LR, #4
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #1
+  blx  ASM_PFX(PeiCommonExceptionEntry)
+
+_DefaultSWI:
+  sub  r1, LR, #4
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #2
+  blx  ASM_PFX(PeiCommonExceptionEntry)
+
+_DefaultPrefetchAbort:
+  sub  r1, LR, #4
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #3
+  blx  ASM_PFX(PeiCommonExceptionEntry)
+
+_DefaultDataAbort:
+  sub  r1, LR, #8
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #4
+  blx  ASM_PFX(PeiCommonExceptionEntry)
+
+_DefaultReserved:
+  mov  r1, lr
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #5
+  blx  PeiCommonExceptionEntry
+
+_DefaultIrq:
+  sub  r1, LR, #4
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #6
+  blx  PeiCommonExceptionEntry
+
+_DefaultFiq:
+  sub  r1, LR, #4
+  # Switch to SVC for common stack
+  cps  #0x13
+  mov  r0, #7
+  blx  PeiCommonExceptionEntry
+
+.end