When dumping the CPU state after an unhandled fault, walk the stack
frames and decode the return addresses so we can show a minimal
backtrace. Unfortunately, we do not have sufficient information to
show the function names, but at least we can see the modules and the
return addresses inside the modules.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
---
Example output:
Synchronous Exception at 0x00000000F5EA4C8C
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe/DEBUG/ArmVeNorFlashDxe.dll
loaded at 0x00000000F5E90000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe/DEBUG/ArmVeNorFlashDxe.dll
(0x00000000F5EA4AE8) loaded at 0x00000000F5E90000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe/DEBUG/ArmVeNorFlashDxe.dll
(0x00000000F5EA1BFC) loaded at 0x00000000F5E90000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe/DEBUG/ArmVeNorFlashDxe.dll
(0x00000000F5EA23F4) loaded at 0x00000000F5E90000
called from
/work/jenkins/workspace/ap-uefi-bin/EDK2_ARCH/ARM/EDK2_BINARY/FatPkg/label/sas-sw/Build/Fat/RELEASE_GCC49/AARCH64/FatPkg/EnhancedFatDxe/Fat/DEBUG/Fat.dll
(0x00000000FADC454C) loaded at 0x00000000FADC3000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/MdeModulePkg/Core/Dxe/DxeMain/DEBUG/DxeCore.dll
(0x00000000FE47C868) loaded at 0x00000000FE471000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/IntelFrameworkModulePkg/Universal/BdsDxe/BdsDxe/DEBUG/BdsDxe.dll
(0x00000000FAE2C50C) loaded at 0x00000000FAE01000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/IntelFrameworkModulePkg/Universal/BdsDxe/BdsDxe/DEBUG/BdsDxe.dll
(0x00000000FAE2C674) loaded at 0x00000000FAE01000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/IntelFrameworkModulePkg/Universal/BdsDxe/BdsDxe/DEBUG/BdsDxe.dll
(0x00000000FAE2C264) loaded at 0x00000000FAE01000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/IntelFrameworkModulePkg/Universal/BdsDxe/BdsDxe/DEBUG/BdsDxe.dll
(0x00000000FAE36998) loaded at 0x00000000FAE01000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/IntelFrameworkModulePkg/Universal/BdsDxe/BdsDxe/DEBUG/BdsDxe.dll
(0x00000000FAE03668) loaded at 0x00000000FAE01000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/MdeModulePkg/Core/Dxe/DxeMain/DEBUG/DxeCore.dll
(0x00000000FE4733F0) loaded at 0x00000000FE471000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/MdeModulePkg/Core/Dxe/DxeMain/DEBUG/DxeCore.dll
(0x00000000FE4724A0) loaded at 0x00000000FE471000
called from
/home/ard/build/edk2/Build/ArmVExpress-FVP-AArch64/DEBUG_GCC5/AARCH64/MdeModulePkg/Core/Dxe/DxeMain/DEBUG/DxeCore.dll
(0x00000000FE472024) loaded at 0x00000000FE471000
---
.../AArch64/DefaultExceptionHandler.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git
a/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
b/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
index 31fc936b21ff..84b442f2b6f4 100644
---
a/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
+++
b/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
@@ -152,9 +152,30 @@ DefaultExceptionHandler (
CHAR8 *Pdb;
UINTN ImageBase;
UINTN PeCoffSizeOfHeader;
+ UINT64 *Fp;
+
Pdb = GetImageName (SystemContext.SystemContextAArch64->ELR, &ImageBase,
&PeCoffSizeOfHeader);
if (Pdb != NULL) {
DEBUG ((EFI_D_ERROR, "%a loaded at 0x%016lx \n", Pdb, ImageBase));
+
+ Pdb = GetImageName (SystemContext.SystemContextAArch64->LR, &ImageBase,
+ &PeCoffSizeOfHeader);
+ if (Pdb != NULL) {
+ DEBUG ((EFI_D_ERROR, "called from %a (0x%016lx) loaded at 0x%016lx \n",
+ Pdb, SystemContext.SystemContextAArch64->LR, ImageBase));
+ }
+ for (Fp = (UINT64 *)SystemContext.SystemContextAArch64->FP;
+ *Fp != 0;
+ Fp = (UINT64 *)Fp[0]) {
+ if (Fp[1] == SystemContext.SystemContextAArch64->LR) {
+ continue;
+ }
+ Pdb = GetImageName (Fp[1], &ImageBase, &PeCoffSizeOfHeader);
+ if (Pdb != NULL) {
+ DEBUG ((EFI_D_ERROR, "called from %a (0x%016lx) loaded at 0x%016lx
\n",
+ Pdb, Fp[1], ImageBase));
+ }
+ }
}
DEBUG_CODE_END ();
--
2.7.4
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