ArmPkg: increase robustness of the crash handler

[edk2] [PATCH 0/3] ArmPkg: increase robustness of the crash handler

Ard Biesheuvel posted 3 patches 7 years, 7 months ago

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ArmPkg/Library/ArmExceptionLib/AArch64/AArch64Exception.c                    | 17 +++-
ArmPkg/Library/ArmExceptionLib/AArch64/ExceptionSupport.S                    | 86 ++++++++++++--------
ArmPkg/Library/ArmExceptionLib/ArmExceptionLib.inf                           |  5 +-
ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c  | 56 +++++++------
ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLib.inf     |  3 +
ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLibBase.inf |  3 +
6 files changed, 107 insertions(+), 63 deletions(-)

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[edk2] [PATCH 0/3] ArmPkg: increase robustness of the crash handler

Posted by Ard Biesheuvel 7 years, 7 months ago

Make the default exception handler deal with corrupted SP or PC registers,
by switching to the EL0 stack pointer for sync exceptions, and walking the
call stack even if PC is 0x0 or otherwise invalid.

Ard Biesheuvel (3):
  ArmPkg/DefaultExceptionHandlerLib: add missing GUID to .inf
  ArmPkg/DefaultExceptionHandlerLib: walk call stack unconditionally
  ArmPkg/ArmExceptionLib: use EL0 stack for synchronous exceptions

 ArmPkg/Library/ArmExceptionLib/AArch64/AArch64Exception.c                    | 17 +++-
 ArmPkg/Library/ArmExceptionLib/AArch64/ExceptionSupport.S                    | 86 ++++++++++++--------
 ArmPkg/Library/ArmExceptionLib/ArmExceptionLib.inf                           |  5 +-
 ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c  | 56 +++++++------
 ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLib.inf     |  3 +
 ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLibBase.inf |  3 +
 6 files changed, 107 insertions(+), 63 deletions(-)

-- 
2.7.4

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