From: Michael Zimmermann <sigmaepsilon92@gmail.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: "edk2-devel@lists.01.org" <edk2-devel@lists.01.org>,
Leif Lindholm <leif.lindholm@linaro.org>
Subject: Re: [PATCH 2/2] ArmPkg/DefaultExceptionHandlerLib AARCH64: add minimal backtrace to crash dump
Date: Wed, 7 Sep 2016 11:48:03 +0200 [thread overview]
Message-ID: <CAN9vWD+NDo9XMKQxEpkzFotPFFUDVd+0gX7e=rNSZRbSZRVv5Q@mail.gmail.com> (raw)
In-Reply-To: <1473236515-8318-2-git-send-email-ard.biesheuvel@linaro.org>
nice, can we do this for ARM too? I usually need to add DEBUG((...))'s all
over the place for hours until I found the reason for a fault.
Thanks
Michael
On Wed, Sep 7, 2016 at 10:21 AM, Ard Biesheuvel <ard.biesheuvel@linaro.org>
wrote:
> 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.biesheuvel@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
>
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
>
next prev parent reply other threads:[~2016-09-07 9:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-07 8:21 [PATCH 1/2] BaseTools/tools_def AARCH64: enable frame pointers for DEBUG builds Ard Biesheuvel
2016-09-07 8:21 ` [PATCH 2/2] ArmPkg/DefaultExceptionHandlerLib AARCH64: add minimal backtrace to crash dump Ard Biesheuvel
2016-09-07 9:48 ` Michael Zimmermann [this message]
2016-09-07 11:03 ` Ard Biesheuvel
2016-09-07 11:25 ` Michael Zimmermann
2016-09-07 11:32 ` Ard Biesheuvel
2016-09-09 13:08 ` Ard Biesheuvel
2016-09-09 18:03 ` Michael Zimmermann
2016-09-09 16:03 ` Andrew Fish
2016-09-07 15:00 ` [PATCH 1/2] BaseTools/tools_def AARCH64: enable frame pointers for DEBUG builds Leif Lindholm
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