• Steven J. Magnani's avatar
    microblaze: Add stack unwinder · ce3266c0
    Steven J. Magnani authored
    Implement intelligent backtracing by searching for stack frame creation,
    and emitting only return addresses. Use print_hex_dump() to display the
    entire binary kernel stack.
    
    Limitation: MMU kernels are not currently able to trace beyond a system trap
    (interrupt, syscall, etc.). It is the intent of this patch to provide
    infrastructure that can be extended to add this capability later.
    
    Changes from V1:
    * Removed checks in find_frame_creation() that prevented location of the frame
      creation instruction in heavily optimized code
    * Various formatting/commenting/file location tweaks per review comments
    * Dropped Kconfig option to enable STACKTRACE as something logically separate
    Signed-off-by: default avatarSteven J. Magnani <steve@digidescorp.com>
    ce3266c0
unwind.h 719 Bytes