diff options
Diffstat (limited to 'ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c')
| -rw-r--r-- | ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c b/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c deleted file mode 100644 index 179fc224be..0000000000 --- a/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c +++ /dev/null @@ -1,268 +0,0 @@ -/** @file
- Default exception handler
-
- Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2012, ARM Ltd. All rights reserved.<BR>
-
- 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 <Uefi.h>
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include <Library/PeCoffGetEntryPointLib.h>
-#include <Library/PrintLib.h>
-#include <Library/ArmDisassemblerLib.h>
-#include <Library/SerialPortLib.h>
-
-#include <Guid/DebugImageInfoTable.h>
-
-#include <Protocol/DebugSupport.h>
-#include <Library/DefaultExceptionHandlerLib.h>
-
-EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *gDebugImageTableHeader = NULL;
-
-typedef struct {
- UINT32 BIT;
- CHAR8 Char;
-} CPSR_CHAR;
-
-CHAR8 *
-GetImageName (
- IN UINTN FaultAddress,
- OUT UINTN *ImageBase,
- OUT UINTN *PeCoffSizeOfHeaders
- );
-
-/**
- Convert the Current Program Status Register (CPSR) to a string. The string is
- a defacto standard in the ARM world.
-
- It is possible to add extra bits by adding them to CpsrChar array.
-
- @param Cpsr ARM CPSR register value
- @param ReturnStr 32 byte string that contains string version of CPSR
-
-**/
-VOID
-CpsrString (
- IN UINT32 Cpsr,
- OUT CHAR8 *ReturnStr
- )
-{
- UINTN Index;
- CHAR8* Str;
- CHAR8* ModeStr;
- CPSR_CHAR CpsrChar[] = {
- { 31, 'n' },
- { 30, 'z' },
- { 29, 'c' },
- { 28, 'v' },
-
- { 9, 'e' },
- { 8, 'a' },
- { 7, 'i' },
- { 6, 'f' },
- { 5, 't' },
- { 0, '?' }
- };
-
- Str = ReturnStr;
-
- for (Index = 0; CpsrChar[Index].BIT != 0; Index++, Str++) {
- *Str = CpsrChar[Index].Char;
- if ((Cpsr & (1 << CpsrChar[Index].BIT)) != 0) {
- // Concert to upper case if bit is set
- *Str &= ~0x20;
- }
- }
-
- *Str++ = '_';
- *Str = '\0';
-
- switch (Cpsr & 0x1f) {
- case 0x10:
- ModeStr = "usr";
- break;
- case 0x011:
- ModeStr = "fiq";
- break;
- case 0x12:
- ModeStr = "irq";
- break;
- case 0x13:
- ModeStr = "svc";
- break;
- case 0x16:
- ModeStr = "mon";
- break;
- case 0x17:
- ModeStr = "abt";
- break;
- case 0x1b:
- ModeStr = "und";
- break;
- case 0x1f:
- ModeStr = "sys";
- break;
-
- default:
- ModeStr = "???";
- break;
- }
-
- AsciiStrCat (Str, ModeStr);
- return;
-}
-
-CHAR8 *
-FaultStatusToString (
- IN UINT32 Status
- )
-{
- CHAR8 *FaultSource;
-
- switch (Status) {
- case 0x01: FaultSource = "Alignment fault"; break;
- case 0x02: FaultSource = "Debug event fault"; break;
- case 0x03: FaultSource = "Access Flag fault on Section"; break;
- case 0x04: FaultSource = "Cache maintenance operation fault[2]"; break;
- case 0x05: FaultSource = "Translation fault on Section"; break;
- case 0x06: FaultSource = "Access Flag fault on Page"; break;
- case 0x07: FaultSource = "Translation fault on Page"; break;
- case 0x08: FaultSource = "Precise External Abort"; break;
- case 0x09: FaultSource = "Domain fault on Section"; break;
- case 0x0b: FaultSource = "Domain fault on Page"; break;
- case 0x0c: FaultSource = "External abort on translation, first level"; break;
- case 0x0d: FaultSource = "Permission fault on Section"; break;
- case 0x0e: FaultSource = "External abort on translation, second level"; break;
- case 0x0f: FaultSource = "Permission fault on Page"; break;
- case 0x16: FaultSource = "Imprecise External Abort"; break;
- default: FaultSource = "No function"; break;
- }
-
- return FaultSource;
-}
-
-STATIC CHAR8 *gExceptionTypeString[] = {
- "Reset",
- "Undefined OpCode",
- "SVC",
- "Prefetch Abort",
- "Data Abort",
- "Undefined",
- "IRQ",
- "FIQ"
-};
-
-/**
- This is the default action to take on an unexpected exception
-
- Since this is exception context don't do anything crazy like try to allcoate memory.
-
- @param ExceptionType Type of the exception
- @param SystemContext Register state at the time of the Exception
-
-
-**/
-VOID
-DefaultExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- CHAR8 Buffer[100];
- UINTN CharCount;
- UINT32 DfsrStatus;
- UINT32 IfsrStatus;
- BOOLEAN DfsrWrite;
- UINT32 PcAdjust = 0;
-
- CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"\n%a Exception PC at 0x%08x CPSR 0x%08x ",
- gExceptionTypeString[ExceptionType], SystemContext.SystemContextArm->PC, SystemContext.SystemContextArm->CPSR);
- SerialPortWrite ((UINT8 *) Buffer, CharCount);
-
- DEBUG_CODE_BEGIN ();
- CHAR8 *Pdb;
- UINT32 ImageBase;
- UINT32 PeCoffSizeOfHeader;
- UINT32 Offset;
- CHAR8 CpsrStr[32]; // char per bit. Lower 5-bits are mode that is a 3 char string
- CHAR8 Buffer[80];
- UINT8 *DisAsm;
- UINT32 ItBlock;
-
- CpsrString (SystemContext.SystemContextArm->CPSR, CpsrStr);
- DEBUG ((EFI_D_ERROR, "%a\n", CpsrStr));
-
- Pdb = GetImageName (SystemContext.SystemContextArm->PC, &ImageBase, &PeCoffSizeOfHeader);
- Offset = SystemContext.SystemContextArm->PC - ImageBase;
- if (Pdb != NULL) {
- DEBUG ((EFI_D_ERROR, "%a\n", Pdb));
-
- //
- // A PE/COFF image loads its headers into memory so the headers are
- // included in the linked addresses. ELF and Mach-O images do not
- // include the headers so the first byte of the image is usually
- // text (code). If you look at link maps from ELF or Mach-O images
- // you need to subtract out the size of the PE/COFF header to get
- // get the offset that matches the link map.
- //
- DEBUG ((EFI_D_ERROR, "loaded at 0x%08x (PE/COFF offset) 0x%x (ELF or Mach-O offset) 0x%x", ImageBase, Offset, Offset - PeCoffSizeOfHeader));
-
- // If we come from an image it is safe to show the instruction. We know it should not fault
- DisAsm = (UINT8 *)(UINTN)SystemContext.SystemContextArm->PC;
- ItBlock = 0;
- DisassembleInstruction (&DisAsm, (SystemContext.SystemContextArm->CPSR & BIT5) == BIT5, TRUE, &ItBlock, Buffer, sizeof (Buffer));
- DEBUG ((EFI_D_ERROR, "\n%a", Buffer));
-
- switch (ExceptionType) {
- case EXCEPT_ARM_UNDEFINED_INSTRUCTION:
- case EXCEPT_ARM_SOFTWARE_INTERRUPT:
- case EXCEPT_ARM_PREFETCH_ABORT:
- case EXCEPT_ARM_DATA_ABORT:
- // advance PC past the faulting instruction
- PcAdjust = (UINTN)DisAsm - SystemContext.SystemContextArm->PC;
- break;
-
- default:
- break;
- }
-
- }
- DEBUG_CODE_END ();
- DEBUG ((EFI_D_ERROR, "\n R0 0x%08x R1 0x%08x R2 0x%08x R3 0x%08x\n", SystemContext.SystemContextArm->R0, SystemContext.SystemContextArm->R1, SystemContext.SystemContextArm->R2, SystemContext.SystemContextArm->R3));
- DEBUG ((EFI_D_ERROR, " R4 0x%08x R5 0x%08x R6 0x%08x R7 0x%08x\n", SystemContext.SystemContextArm->R4, SystemContext.SystemContextArm->R5, SystemContext.SystemContextArm->R6, SystemContext.SystemContextArm->R7));
- DEBUG ((EFI_D_ERROR, " R8 0x%08x R9 0x%08x R10 0x%08x R11 0x%08x\n", SystemContext.SystemContextArm->R8, SystemContext.SystemContextArm->R9, SystemContext.SystemContextArm->R10, SystemContext.SystemContextArm->R11));
- DEBUG ((EFI_D_ERROR, " R12 0x%08x SP 0x%08x LR 0x%08x PC 0x%08x\n", SystemContext.SystemContextArm->R12, SystemContext.SystemContextArm->SP, SystemContext.SystemContextArm->LR, SystemContext.SystemContextArm->PC));
- DEBUG ((EFI_D_ERROR, "DFSR 0x%08x DFAR 0x%08x IFSR 0x%08x IFAR 0x%08x\n", SystemContext.SystemContextArm->DFSR, SystemContext.SystemContextArm->DFAR, SystemContext.SystemContextArm->IFSR, SystemContext.SystemContextArm->IFAR));
-
- // Bit10 is Status[4] Bit3:0 is Status[3:0]
- DfsrStatus = (SystemContext.SystemContextArm->DFSR & 0xf) | ((SystemContext.SystemContextArm->DFSR >> 6) & 0x10);
- DfsrWrite = (SystemContext.SystemContextArm->DFSR & BIT11) != 0;
- if (DfsrStatus != 0x00) {
- DEBUG ((EFI_D_ERROR, " %a: %a 0x%08x\n", FaultStatusToString (DfsrStatus), DfsrWrite ? "write to" : "read from", SystemContext.SystemContextArm->DFAR));
- }
-
- IfsrStatus = (SystemContext.SystemContextArm->IFSR & 0xf) | ((SystemContext.SystemContextArm->IFSR >> 6) & 0x10);
- if (IfsrStatus != 0) {
- DEBUG ((EFI_D_ERROR, " Instruction %a at 0x%08x\n", FaultStatusToString (SystemContext.SystemContextArm->IFSR & 0xf), SystemContext.SystemContextArm->IFAR));
- }
-
- DEBUG ((EFI_D_ERROR, "\n"));
- ASSERT (FALSE);
-
- // Clear the error registers that we have already displayed incase some one wants to keep going
- SystemContext.SystemContextArm->DFSR = 0;
- SystemContext.SystemContextArm->IFSR = 0;
-
- // If some one is stepping past the exception handler adjust the PC to point to the next instruction
- SystemContext.SystemContextArm->PC += PcAdjust;
-}
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