ArmPlatformPkg/Sec/AArch64/Exception.S

#
#  Copyright (c) 2011-2021, Arm Limited. All rights reserved.<BR>
#
#  SPDX-License-Identifier: BSD-2-Clause-Patent
#
#

#include <AArch64/AArch64.h>
#include <AsmMacroLib.h>
#include <Base.h>
#include <AutoGen.h>

.text

//============================================================
//Default Exception Handlers
//============================================================

#define TO_HANDLER                                              \
   EL1_OR_EL2(x1)                                               \
1: mrs  x1, elr_el1    /* EL1 Exception Link Register */       ;\
   b    3f                                                     ;\
2: mrs  x1, elr_el2    /* EL2 Exception Link Register */       ;\
3: bl   ASM_PFX(PeiCommonExceptionEntry)                       ;


#define EXCEPTION_VECTOR                                        \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SP0_SYNC)           \
_DefaultSyncExceptHandler_t:                                    \
  mov  x0, #EXCEPT_AARCH64_SYNCHRONOUS_EXCEPTIONS              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SP0_IRQ)            \
_DefaultIrq_t:                                                  \
  mov  x0, #EXCEPT_AARCH64_IRQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SP0_FIQ)            \
_DefaultFiq_t:                                                  \
  mov  x0, #EXCEPT_AARCH64_FIQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SP0_SERR)           \
_DefaultSError_t:                                               \
  mov  x0, #EXCEPT_AARCH64_SERROR                              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SPX_SYNC)           \
_DefaultSyncExceptHandler_h:                                    \
  mov  x0, #EXCEPT_AARCH64_SYNCHRONOUS_EXCEPTIONS              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SPX_IRQ)            \
_DefaultIrq_h:                                                  \
  mov  x0, #EXCEPT_AARCH64_IRQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SPX_FIQ)            \
_DefaultFiq_h:                                                  \
  mov  x0, #EXCEPT_AARCH64_FIQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_CUR_SPX_SERR)           \
_DefaultSError_h:                                               \
  mov  x0, #EXCEPT_AARCH64_SERROR                              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A64_SYNC)           \
_DefaultSyncExceptHandler_LowerA64:                             \
  mov  x0, #EXCEPT_AARCH64_SYNCHRONOUS_EXCEPTIONS              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A64_IRQ)            \
_DefaultIrq_LowerA64:                                           \
  mov  x0, #EXCEPT_AARCH64_IRQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A64_FIQ)            \
_DefaultFiq_LowerA64:                                           \
  mov  x0, #EXCEPT_AARCH64_FIQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A64_SERR)           \
_DefaultSError_LowerA64:                                        \
  mov  x0, #EXCEPT_AARCH64_SERROR                              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A32_SYNC)           \
_DefaultSyncExceptHandler_LowerA32:                             \
  mov  x0, #EXCEPT_AARCH64_SYNCHRONOUS_EXCEPTIONS              ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A32_IRQ)            \
_DefaultIrq_LowerA32:                                           \
  mov  x0, #EXCEPT_AARCH64_IRQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A32_FIQ)            \
_DefaultFiq_LowerA32:                                           \
  mov  x0, #EXCEPT_AARCH64_FIQ                                 ;\
  TO_HANDLER                                                   ;\
                                                                \
VECTOR_ENTRY(PeiVectorTable, ARM_VECTOR_LOW_A32_SERR)           \
_DefaultSError_LowerA32:                                        \
  mov  x0, #EXCEPT_AARCH64_SERROR                              ;\
  TO_HANDLER                                                   ;

//
// Default Exception handlers: There is no plan to return from any of these exceptions.
// No context saving at all.
//

VECTOR_TABLE(PeiVectorTable, EXCEPTION_VECTOR)

AARCH64_BTI_NOTE()