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/** @file
Default exception handler
Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/UefiLib.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 <Library/UefiBootServicesTableLib.h>
#include <Guid/DebugImageInfoTable.h>
#include <Protocol/DebugSupport.h>
#include <Protocol/LoadedImage.h>
STATIC CHAR8 *gExceptionTypeString[] = {
"Synchronous",
"IRQ",
"FIQ",
"SError"
};
STATIC BOOLEAN mRecursiveException;
CHAR8 *
GetImageName (
IN UINTN FaultAddress,
OUT UINTN *ImageBase,
OUT UINTN *PeCoffSizeOfHeaders
);
STATIC
VOID
DescribeInstructionOrDataAbort (
IN CHAR8 *AbortType,
IN UINTN Iss
)
{
CHAR8 *AbortCause;
switch (Iss & 0x3f) {
case 0x0: AbortCause = "Address size fault, zeroth level of translation or translation table base register"; break;
case 0x1: AbortCause = "Address size fault, first level"; break;
case 0x2: AbortCause = "Address size fault, second level"; break;
case 0x3: AbortCause = "Address size fault, third level"; break;
case 0x4: AbortCause = "Translation fault, zeroth level"; break;
case 0x5: AbortCause = "Translation fault, first level"; break;
case 0x6: AbortCause = "Translation fault, second level"; break;
case 0x7: AbortCause = "Translation fault, third level"; break;
case 0x9: AbortCause = "Access flag fault, first level"; break;
case 0xa: AbortCause = "Access flag fault, second level"; break;
case 0xb: AbortCause = "Access flag fault, third level"; break;
case 0xd: AbortCause = "Permission fault, first level"; break;
case 0xe: AbortCause = "Permission fault, second level"; break;
case 0xf: AbortCause = "Permission fault, third level"; break;
case 0x10: AbortCause = "Synchronous external abort"; break;
case 0x18: AbortCause = "Synchronous parity error on memory access"; break;
case 0x11: AbortCause = "Asynchronous external abort"; break;
case 0x19: AbortCause = "Asynchronous parity error on memory access"; break;
case 0x14: AbortCause = "Synchronous external abort on translation table walk, zeroth level"; break;
case 0x15: AbortCause = "Synchronous external abort on translation table walk, first level"; break;
case 0x16: AbortCause = "Synchronous external abort on translation table walk, second level"; break;
case 0x17: AbortCause = "Synchronous external abort on translation table walk, third level"; break;
case 0x1c: AbortCause = "Synchronous parity error on memory access on translation table walk, zeroth level"; break;
case 0x1d: AbortCause = "Synchronous parity error on memory access on translation table walk, first level"; break;
case 0x1e: AbortCause = "Synchronous parity error on memory access on translation table walk, second level"; break;
case 0x1f: AbortCause = "Synchronous parity error on memory access on translation table walk, third level"; break;
case 0x21: AbortCause = "Alignment fault"; break;
case 0x22: AbortCause = "Debug event"; break;
case 0x30: AbortCause = "TLB conflict abort"; break;
case 0x33:
case 0x34: AbortCause = "IMPLEMENTATION DEFINED"; break;
case 0x35:
case 0x36: AbortCause = "Domain fault"; break;
default: AbortCause = ""; break;
}
DEBUG ((DEBUG_ERROR, "\n%a: %a\n", AbortType, AbortCause));
}
STATIC
VOID
DescribeExceptionSyndrome (
IN UINT32 Esr
)
{
CHAR8 *Message;
UINTN Ec;
UINTN Iss;
Ec = Esr >> 26;
Iss = Esr & 0x00ffffff;
switch (Ec) {
case 0x15: Message = "SVC executed in AArch64"; break;
case 0x20:
case 0x21: DescribeInstructionOrDataAbort ("Instruction abort", Iss); return;
case 0x22: Message = "PC alignment fault"; break;
case 0x23: Message = "SP alignment fault"; break;
case 0x24:
case 0x25: DescribeInstructionOrDataAbort ("Data abort", Iss); return;
default: return;
}
DEBUG ((DEBUG_ERROR, "\n %a \n", Message));
}
#ifndef MDEPKG_NDEBUG
STATIC
CONST CHAR8 *
BaseName (
IN CONST CHAR8 *FullName
)
{
CONST CHAR8 *Str;
Str = FullName + AsciiStrLen (FullName);
while (--Str > FullName) {
if (*Str == '/' || *Str == '\\') {
return Str + 1;
}
}
return Str;
}
#endif
/**
This is the default action to take on an unexpected exception
Since this is exception context don't do anything crazy like try to allocate 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;
INT32 Offset;
if (mRecursiveException) {
STATIC CHAR8 CONST Message[] = "\nRecursive exception occurred while dumping the CPU state\n";
SerialPortWrite ((UINT8 *)Message, sizeof Message - 1);
if (gST->ConOut != NULL) {
AsciiPrint (Message);
}
CpuDeadLoop ();
}
mRecursiveException = TRUE;
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"\n\n%a Exception at 0x%016lx\n", gExceptionTypeString[ExceptionType], SystemContext.SystemContextAArch64->ELR);
SerialPortWrite ((UINT8 *) Buffer, CharCount);
if (gST->ConOut != NULL) {
AsciiPrint (Buffer);
}
DEBUG_CODE_BEGIN ();
CHAR8 *Pdb, *PrevPdb;
UINTN ImageBase;
UINTN PeCoffSizeOfHeader;
UINT64 *Fp;
UINT64 RootFp[2];
UINTN Idx;
PrevPdb = Pdb = GetImageName (SystemContext.SystemContextAArch64->ELR, &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL) {
DEBUG ((DEBUG_ERROR, "PC 0x%012lx (0x%012lx+0x%08x) [ 0] %a\n",
SystemContext.SystemContextAArch64->ELR, ImageBase,
SystemContext.SystemContextAArch64->ELR - ImageBase, BaseName (Pdb)));
} else {
DEBUG ((DEBUG_ERROR, "PC 0x%012lx\n", SystemContext.SystemContextAArch64->ELR));
}
if ((UINT64 *)SystemContext.SystemContextAArch64->FP != 0) {
Idx = 0;
RootFp[0] = ((UINT64 *)SystemContext.SystemContextAArch64->FP)[0];
RootFp[1] = ((UINT64 *)SystemContext.SystemContextAArch64->FP)[1];
if (RootFp[1] != SystemContext.SystemContextAArch64->LR) {
RootFp[0] = SystemContext.SystemContextAArch64->FP;
RootFp[1] = SystemContext.SystemContextAArch64->LR;
}
for (Fp = RootFp; Fp[0] != 0; Fp = (UINT64 *)Fp[0]) {
Pdb = GetImageName (Fp[1], &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL) {
if (Pdb != PrevPdb) {
Idx++;
PrevPdb = Pdb;
}
DEBUG ((DEBUG_ERROR, "PC 0x%012lx (0x%012lx+0x%08x) [% 2d] %a\n",
Fp[1], ImageBase, Fp[1] - ImageBase, Idx, BaseName (Pdb)));
} else {
DEBUG ((DEBUG_ERROR, "PC 0x%012lx\n", Fp[1]));
}
}
PrevPdb = Pdb = GetImageName (SystemContext.SystemContextAArch64->ELR, &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL) {
DEBUG ((DEBUG_ERROR, "\n[ 0] %a\n", Pdb));
}
Idx = 0;
for (Fp = RootFp; Fp[0] != 0; Fp = (UINT64 *)Fp[0]) {
Pdb = GetImageName (Fp[1], &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL && Pdb != PrevPdb) {
DEBUG ((DEBUG_ERROR, "[% 2d] %a\n", ++Idx, Pdb));
PrevPdb = Pdb;
}
}
}
DEBUG_CODE_END ();
DEBUG ((DEBUG_ERROR, "\n X0 0x%016lx X1 0x%016lx X2 0x%016lx X3 0x%016lx\n", SystemContext.SystemContextAArch64->X0, SystemContext.SystemContextAArch64->X1, SystemContext.SystemContextAArch64->X2, SystemContext.SystemContextAArch64->X3));
DEBUG ((DEBUG_ERROR, " X4 0x%016lx X5 0x%016lx X6 0x%016lx X7 0x%016lx\n", SystemContext.SystemContextAArch64->X4, SystemContext.SystemContextAArch64->X5, SystemContext.SystemContextAArch64->X6, SystemContext.SystemContextAArch64->X7));
DEBUG ((DEBUG_ERROR, " X8 0x%016lx X9 0x%016lx X10 0x%016lx X11 0x%016lx\n", SystemContext.SystemContextAArch64->X8, SystemContext.SystemContextAArch64->X9, SystemContext.SystemContextAArch64->X10, SystemContext.SystemContextAArch64->X11));
DEBUG ((DEBUG_ERROR, " X12 0x%016lx X13 0x%016lx X14 0x%016lx X15 0x%016lx\n", SystemContext.SystemContextAArch64->X12, SystemContext.SystemContextAArch64->X13, SystemContext.SystemContextAArch64->X14, SystemContext.SystemContextAArch64->X15));
DEBUG ((DEBUG_ERROR, " X16 0x%016lx X17 0x%016lx X18 0x%016lx X19 0x%016lx\n", SystemContext.SystemContextAArch64->X16, SystemContext.SystemContextAArch64->X17, SystemContext.SystemContextAArch64->X18, SystemContext.SystemContextAArch64->X19));
DEBUG ((DEBUG_ERROR, " X20 0x%016lx X21 0x%016lx X22 0x%016lx X23 0x%016lx\n", SystemContext.SystemContextAArch64->X20, SystemContext.SystemContextAArch64->X21, SystemContext.SystemContextAArch64->X22, SystemContext.SystemContextAArch64->X23));
DEBUG ((DEBUG_ERROR, " X24 0x%016lx X25 0x%016lx X26 0x%016lx X27 0x%016lx\n", SystemContext.SystemContextAArch64->X24, SystemContext.SystemContextAArch64->X25, SystemContext.SystemContextAArch64->X26, SystemContext.SystemContextAArch64->X27));
DEBUG ((DEBUG_ERROR, " X28 0x%016lx FP 0x%016lx LR 0x%016lx \n", SystemContext.SystemContextAArch64->X28, SystemContext.SystemContextAArch64->FP, SystemContext.SystemContextAArch64->LR));
/* We save these as 128bit numbers, but have to print them as two 64bit numbers,
so swap the 64bit words to correctly represent a 128bit number. */
DEBUG ((DEBUG_ERROR, "\n V0 0x%016lx %016lx V1 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V0[1], SystemContext.SystemContextAArch64->V0[0], SystemContext.SystemContextAArch64->V1[1], SystemContext.SystemContextAArch64->V1[0]));
DEBUG ((DEBUG_ERROR, " V2 0x%016lx %016lx V3 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V2[1], SystemContext.SystemContextAArch64->V2[0], SystemContext.SystemContextAArch64->V3[1], SystemContext.SystemContextAArch64->V3[0]));
DEBUG ((DEBUG_ERROR, " V4 0x%016lx %016lx V5 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V4[1], SystemContext.SystemContextAArch64->V4[0], SystemContext.SystemContextAArch64->V5[1], SystemContext.SystemContextAArch64->V5[0]));
DEBUG ((DEBUG_ERROR, " V6 0x%016lx %016lx V7 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V6[1], SystemContext.SystemContextAArch64->V6[0], SystemContext.SystemContextAArch64->V7[1], SystemContext.SystemContextAArch64->V7[0]));
DEBUG ((DEBUG_ERROR, " V8 0x%016lx %016lx V9 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V8[1], SystemContext.SystemContextAArch64->V8[0], SystemContext.SystemContextAArch64->V9[1], SystemContext.SystemContextAArch64->V9[0]));
DEBUG ((DEBUG_ERROR, " V10 0x%016lx %016lx V11 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V10[1], SystemContext.SystemContextAArch64->V10[0], SystemContext.SystemContextAArch64->V11[1], SystemContext.SystemContextAArch64->V11[0]));
DEBUG ((DEBUG_ERROR, " V12 0x%016lx %016lx V13 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V12[1], SystemContext.SystemContextAArch64->V12[0], SystemContext.SystemContextAArch64->V13[1], SystemContext.SystemContextAArch64->V13[0]));
DEBUG ((DEBUG_ERROR, " V14 0x%016lx %016lx V15 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V14[1], SystemContext.SystemContextAArch64->V14[0], SystemContext.SystemContextAArch64->V15[1], SystemContext.SystemContextAArch64->V15[0]));
DEBUG ((DEBUG_ERROR, " V16 0x%016lx %016lx V17 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V16[1], SystemContext.SystemContextAArch64->V16[0], SystemContext.SystemContextAArch64->V17[1], SystemContext.SystemContextAArch64->V17[0]));
DEBUG ((DEBUG_ERROR, " V18 0x%016lx %016lx V19 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V18[1], SystemContext.SystemContextAArch64->V18[0], SystemContext.SystemContextAArch64->V19[1], SystemContext.SystemContextAArch64->V19[0]));
DEBUG ((DEBUG_ERROR, " V20 0x%016lx %016lx V21 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V20[1], SystemContext.SystemContextAArch64->V20[0], SystemContext.SystemContextAArch64->V21[1], SystemContext.SystemContextAArch64->V21[0]));
DEBUG ((DEBUG_ERROR, " V22 0x%016lx %016lx V23 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V22[1], SystemContext.SystemContextAArch64->V22[0], SystemContext.SystemContextAArch64->V23[1], SystemContext.SystemContextAArch64->V23[0]));
DEBUG ((DEBUG_ERROR, " V24 0x%016lx %016lx V25 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V24[1], SystemContext.SystemContextAArch64->V24[0], SystemContext.SystemContextAArch64->V25[1], SystemContext.SystemContextAArch64->V25[0]));
DEBUG ((DEBUG_ERROR, " V26 0x%016lx %016lx V27 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V26[1], SystemContext.SystemContextAArch64->V26[0], SystemContext.SystemContextAArch64->V27[1], SystemContext.SystemContextAArch64->V27[0]));
DEBUG ((DEBUG_ERROR, " V28 0x%016lx %016lx V29 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V28[1], SystemContext.SystemContextAArch64->V28[0], SystemContext.SystemContextAArch64->V29[1], SystemContext.SystemContextAArch64->V29[0]));
DEBUG ((DEBUG_ERROR, " V30 0x%016lx %016lx V31 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V30[1], SystemContext.SystemContextAArch64->V30[0], SystemContext.SystemContextAArch64->V31[1], SystemContext.SystemContextAArch64->V31[0]));
DEBUG ((DEBUG_ERROR, "\n SP 0x%016lx ELR 0x%016lx SPSR 0x%08lx FPSR 0x%08lx\n ESR 0x%08lx FAR 0x%016lx\n", SystemContext.SystemContextAArch64->SP, SystemContext.SystemContextAArch64->ELR, SystemContext.SystemContextAArch64->SPSR, SystemContext.SystemContextAArch64->FPSR, SystemContext.SystemContextAArch64->ESR, SystemContext.SystemContextAArch64->FAR));
DEBUG ((DEBUG_ERROR, "\n ESR : EC 0x%02x IL 0x%x ISS 0x%08x\n", (SystemContext.SystemContextAArch64->ESR & 0xFC000000) >> 26, (SystemContext.SystemContextAArch64->ESR >> 25) & 0x1, SystemContext.SystemContextAArch64->ESR & 0x1FFFFFF ));
DescribeExceptionSyndrome (SystemContext.SystemContextAArch64->ESR);
DEBUG ((DEBUG_ERROR, "\nStack dump:\n"));
for (Offset = -256; Offset < 256; Offset += 32) {
DEBUG ((DEBUG_ERROR, "%c %013lx: %016lx %016lx %016lx %016lx\n",
Offset == 0 ? '>' : ' ',
SystemContext.SystemContextAArch64->SP + Offset,
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset),
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset + 8),
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset + 16),
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset + 24)));
}
ASSERT (FALSE);
CpuDeadLoop ();
}
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