[RFC v2 0/3] Stack trace support in X64 exception handling

[Paulo Alcantara <pcacjr@zytor.com>]

Hi,

This series adds stack trace support during a X64 CPU exception.

Informations like back trace, stack contents and image module names
(that were part of the call stack) will be dumped out.

We already have such support in ARM/AArch64 (IIRC) exception handling
(thanks to Ard), and then I thought we'd also deserve it in X64 and
IA-32 platforms.

What do you think guys?

BTW, I've tested this only with OVMF (X64 only), using:
  - gcc-6.3.0, GCC5, NOOPT

Any other tests  would be really appreciable.

Thanks!
Paulo

Repo:   https://github.com/pcacjr/edk2.git
Branch: stacktrace_v2

Cc: Rick Bramley <richard.bramley@hp.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: "Brian J. Johnson" <brian.johnson@hpe.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
---

v1 -> v2:
  * Add IA32 arch support (GCC toolchain only)
  * Replace hard-coded stack alignment value (16) with
    CPU_STACK_ALIGNMENT.
  * Check for proper stack and frame pointer alignments.
  * Fix initialization of UnwoundStacksCount to 1.
  * Move GetPdbFileName() to common code since it will be used by both
    IA32 and X64 implementations.

Paulo Alcantara (3):
  UefiCpuPkg/CpuExceptionHandlerLib/X64: Add stack trace support
  UefiCpuPkg/CpuExceptionHandlerLib: Export GetPdbFileName()
  UefiCpuPkg/CpuExceptionHandlerLib/Ia32: Add stack trace support

 UefiCpuPkg/Library/CpuExceptionHandlerLib/CpuExceptionCommon.c        | 102 ++++---
 UefiCpuPkg/Library/CpuExceptionHandlerLib/CpuExceptionCommon.h        |  25 +-
 UefiCpuPkg/Library/CpuExceptionHandlerLib/Ia32/ArchExceptionHandler.c | 303 ++++++++++++++++++-
 UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchExceptionHandler.c  | 310 +++++++++++++++++++-
 4 files changed, 682 insertions(+), 58 deletions(-)

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2.14.3