Paolo, please apply :-)
Some aids for debugging: stack dumping, register dumping, and printing
failing assertion conditions.
Compiled on ppc64, arm64, i386, x86_64.
v7:
* Rebased.
v6:
* Don't print dump_stack's call to backtrace() in the stack
trace rather than having backtrace() skip over the first
return address in the trace.
* Actually removed lib/asm-generic/stack.c.
v5:
* Removed unused "b" flag from run_tests.sh
* Removed misleading comment in mkstandalone.sh.
v4:
* Moved around arch and asm files per Linux style (hopefully).
* Added --[enable|disable]-pretty-print-stacks to ./configure.
This has obviated the -p command-line option in
./run_tests.sh that I introduced in v1.
* Fixed arch-neutral backtrace so backtrace itself isn't
included.
v3:
* Renamed functions to match standard backtrace functions
* Added asm-generic stack walker that uses __builtin_return_address.
* Moved offset out of libcflat and into pretty printer
* Made pretty printer more robust w.r.t. errors: now it just
continues printing.
v2:
* Fixed a bunch tests on x86 that broke with
-fno-omit-frame-pointer.
* Only use -fno-omit-frame-pointer on x86. I suspect arm & ppc
will have similar problems that I fixed for x86.
Peter Feiner (5):
lib: backtrace printing
x86: lib: debug dump on unhandled exceptions
lib: dump stack on failed assert()
scripts: pretty print stack traces
scripts: automatically pretty print stacks
Makefile | 7 +--
configure | 10 +++++
lib/arm/asm/stack.h | 0
lib/arm64/asm/stack.h | 0
lib/libcflat.h | 9 +++-
lib/powerpc/asm/stack.h | 0
lib/ppc64/asm/stack.h | 0
lib/stack.c | 96 ++++++++++++++++++++++++++++++++++++++++++
lib/stack.h | 20 +++++++++
lib/x86/asm/stack.h | 14 ++++++
lib/x86/desc.c | 69 +++++++++++++++++++++++++++---
lib/x86/stack.c | 31 ++++++++++++++
run_tests.sh | 8 +++-
scripts/mkstandalone.sh | 2 +
scripts/pretty_print_stacks.py | 89 +++++++++++++++++++++++++++++++++++++++
x86/Makefile.common | 4 ++
16 files changed, 347 insertions(+), 12 deletions(-)
create mode 100644 lib/arm/asm/stack.h
create mode 100644 lib/arm64/asm/stack.h
create mode 100644 lib/powerpc/asm/stack.h
create mode 100644 lib/ppc64/asm/stack.h
create mode 100644 lib/stack.c
create mode 100644 lib/stack.h
create mode 100644 lib/x86/asm/stack.h
create mode 100644 lib/x86/stack.c
create mode 100755 scripts/pretty_print_stacks.py
--
2.8.0.rc3.226.g39d4020
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