ArmException.c

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#include <Uefi.h>
 
#include <Arm/AArch32.h>
 
#include <Library/ArmLib.h>
 
#include <Protocol/DebugSupport.h> // for MAX_ARM_EXCEPTION
 
UINTN                   gMaxExceptionNumber                               = MAX_ARM_EXCEPTION;
EFI_EXCEPTION_CALLBACK  gExceptionHandlers[MAX_ARM_EXCEPTION + 1]         = { 0 };
EFI_EXCEPTION_CALLBACK  gDebuggerExceptionHandlers[MAX_ARM_EXCEPTION + 1] = { 0 };
PHYSICAL_ADDRESS        gExceptionVectorAlignmentMask                     = ARM_VECTOR_TABLE_ALIGNMENT;
 
// Exception handler contains branch to vector location (jmp $) so no handler
// NOTE: This code assumes vectors are ARM and not Thumb code
UINTN  gDebuggerNoHandlerValue = 0xEAFFFFFE;
 
RETURN_STATUS
ArchVectorConfig (
  IN  UINTN  VectorBaseAddress
  )
{
  // if the vector address corresponds to high vectors
  if (VectorBaseAddress == 0xFFFF0000) {
    // set SCTLR.V to enable high vectors
    ArmSetHighVectors ();
  } else {
    // Set SCTLR.V to 0 to enable VBAR to be used
    ArmSetLowVectors ();
  }
 
  return RETURN_SUCCESS;
}