2939c778a3
Introduce ARM and AArch64 instances of the CpuExceptionHandlerLib which provides exception handling and registration of handlers regardless of execution phase. Two variants of the ArmExceptionLib are provided: one where exception handlers reside within the module (meeting appropriate architectural alignment requirements for the vector table) and another one that will relocate a copy of thee xception handlers to an address specified by PcdCpuVectorBaseAddress. The ArmRelocateExceptionLib is intended for use in cases where ArmExceptionLib is too large for the application (uncompressed XIP images) as driven by the vector table alignment padding. The AArch64 build of this library supports execution at EL1, EL2, and EL3 exception levels. Tested on ARM, and AArch64 with SEC, DXE Core, and CpuDxe modules. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Eugene Cohen <eugene@hp.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
64 lines
2.2 KiB
INI
64 lines
2.2 KiB
INI
## @file
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# Instance of CpuExceptionHandlerLib Library for ARM/AArch64 architectures
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#
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# This library instance is used for modules that will implement exception
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# handlers in-place (by programming VBAR). The exception handlers will be
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# generated with alignment as required by the processor architecture. The
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# alignment must be propagated into the parent FFS/FV through FDF build rules
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# for the relevant module types (i.e. Align=Auto).
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#
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# Note that using this library instance can cause growth to the size of the FV
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# due to the padding added by the build tools to meet the vector alignment
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# requirements and may not be desirable for space-sensitive FVs (uncompressed /
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# XIP components). The alternative library instance, ArmRelocateExceptionLib
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# should be considered for these applications.
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#
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# Copyright (c) 2011-2012, ARM Limited. All rights reserved.
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# Copyright (c) 2016 HP Development Company, L.P.
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = ArmExceptionLib
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FILE_GUID = A9796991-4E88-47F0-87C5-D96A1D270539
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = CpuExceptionHandlerLib
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[Sources.common]
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ArmExceptionLib.c
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[Sources.Arm]
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Arm/ArmException.c
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Arm/ExceptionSupport.asm | RVCT
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Arm/ExceptionSupport.S | GCC
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[Sources.AARCH64]
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AArch64/AArch64Exception.c
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AArch64/ExceptionSupport.S
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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ArmPkg/ArmPkg.dec
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[LibraryClasses]
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ArmLib
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DebugLib
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DefaultExceptionHandlerLib
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BaseMemoryLib
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CacheMaintenanceLib
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[Pcd]
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gArmTokenSpaceGuid.PcdDebuggerExceptionSupport
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gArmTokenSpaceGuid.PcdCpuVectorBaseAddress
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