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Author SHA1 Message Date
Arun Sharma
538f63d796 Fix test-ptrace in automated mode
Tested via:
./test-ptrace
./test-ptrace -v /bin/ls /usr
2012-08-11 21:21:54 -07:00
Martin Milata
3d5e6c1ddd Search MiniDebugInfo for procedure names
After searching the normal symbol table, look if the binary contains
.gnu_debugdata section. If it does, run LZMA decompression on it, load
the resulting ELF image into memory and call lookup_symbol() on it
again.

lookup_symbol() is modified so that it takes min_dist as a parameter and
only returns a symbol when it finds one that is closer than indicated by
the parameter.

Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-08-10 15:29:07 +02:00
Martin Milata
71c1fffc35 Refactor parts of elfxx.c to allow reusing code
Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-08-10 15:29:07 +02:00
Martin Milata
4ab9e5dd10 MiniDebugInfo test: tests/run-coredump-unwind-mdi
Test that creates MiniDebugInfo-containing binary and then checks if it
can recover the procedure names from its coredump.

Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-08-10 15:29:03 +02:00
Martin Milata
7d5a197021 Add liblzma detection to configure script
Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-08-10 15:07:49 +02:00
Martin Milata
2dbc26dde8 Make coredump test also test unw_get_proc_name
Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-08-08 13:54:05 +02:00
Martin Milata
e11a6a4fdf Fix incorrect return code of unw_get_proc_name
The code for symbol lookup (elfxx.c:lookup_symbol) works by iterating
over symbol tables while maintaing the symbol closest to the supplied
instruction pointer. Whenever this search encountered symbol that was
longer than result buffer, the function returned -UNW_ENOMEM even though
the final symbol wasn't too long.

Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-08-06 20:12:38 +02:00
Arun Sharma
707b1dba99 Fix a SIGSEGV in test-ptrace.c
./test-ptrace -v resulted in a SIGSEGV.
2012-08-04 18:06:07 -07:00
Arun Sharma
32202619c4 Fix a test failure
The test contains hints to users of unw_backtrace() and friends
on how to ensure correctness in a multi-threaded program
2012-08-04 17:58:24 -07:00
Arun Sharma
814bd79fb1 Fix some compiler warnings 2012-08-04 12:48:56 -07:00
Tommi Rantala
5e854a4103 Fix typo in unw_get_proc_name documentation 2012-07-31 22:52:32 +03:00
Tommi Rantala
4bf1b71952 Use unw_context_t instead of ucontext_t in tests/Gtest-trace.c and tests/Gtest-bt.c
At least on ARM unw_context_t and ucontext_t are not the same types, so
use unw_context_t.

See also commit 24112f6d9b ("Fix some test
failures on x86_64 on distros with small default stacks.")

Gtest-trace.c: In function 'do_backtrace':
Gtest-trace.c:66:3: warning: initialization from incompatible pointer type [enabled by default]
Gtest-trace.c:67:3: warning: passing argument 2 of '_Uarm_init_local' from incompatible pointer type [enabled by default]
../include/libunwind-common.h:239:1: note: expected 'struct unw_context_t *' but argument is of type 'struct ucontext_t *'

Gtest-bt.c: In function 'do_backtrace':
Gtest-bt.c:65:3: warning: initialization from incompatible pointer type [enabled by default]
Gtest-bt.c:66:3: warning: passing argument 2 of '_Uarm_init_local' from incompatible pointer type [enabled by default]
../include/libunwind-common.h:239:1: note: expected 'struct unw_context_t *' but argument is of type 'struct ucontext_t *'
2012-07-31 16:21:15 +03:00
Tommi Rantala
9158e522db Fix IP vs. PC confusion in tests on ARM
The intention in the test cases is to print the "instruction pointer"
value at certain places, and on ARM we will want to get the Program
Counter in these cases. IP is a scratch register, and not very
interesting.
2012-07-31 16:21:15 +03:00
Tommi Rantala
a26f1eac22 IA64: `ent' needed conditionally in Gtables.c
ia64/Gtables.c: In function '_ULia64_search_unwind_table':
ia64/Gtables.c:258: warning: unused variable 'ent'
2012-07-31 16:21:15 +03:00
Tommi Rantala
0fecf13d10 Fix --enable-debug-frame build
dwarf/Gfind_unwind_table.c: In function '_Ux86_dwarf_find_unwind_table':
dwarf/Gfind_unwind_table.c:223:46: error: 'struct elf_dyn_info' has no member named 'edi'
2012-07-31 16:21:15 +03:00
Tommi Rantala
5d36914c9b IA64: use tdep_find_unwind_table() in coredump lib
Fixup commit d93d96ad83 ("Fix compilation
on IA64"), and replace the dwarf_find_unwind_table() call with
tdep_find_unwind_table().

Fixes linkage error on IA64:
../src/.libs/libunwind-coredump.so: undefined reference to `dwarf_find_unwind_table'
2012-07-31 16:21:15 +03:00
Tommi Rantala
354b3fd45b Allow IA64 cross-compilation
Change the way we generate the cursor header files, so that we do not
need to invoke IA64 binaries, which would fail when cross-compiling
libunwind.

Adopt the strategy used in the Linux kernel build system, and parse our
annotated offset information from the assembler file produced by the
compiler.
2012-07-31 16:03:53 +03:00
Tommi Rantala
a06f189baf Rip out AC_TYPE_SIGNAL and sighandler_t check
AC_TYPE_SIGNAL is an obsolete autoconf macro, and we were not using
sighandler_t or RETSIGTYPE for anything anyways.
2012-07-31 15:01:02 +03:00
Martin Milata
de28c51e63 Build libunwind-coredump using libtool
So that it builds shared/pic library that can be linked with other
libraries.

Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-07-04 17:01:44 -07:00
Konstantin Belousov
0f6c8313b7 Port crasher to FreeBSD. 2012-06-23 11:39:18 -07:00
Arun Sharma
21266608cc Allow --enable-debug=no
Signed-off-by: David Lee <live4thee@gmail.com>
2012-06-11 21:44:02 -07:00
Martin Milata
0f9a540c8c coredump: add test
Program test-coredump-unwind was modified to map backing files based on
virtual addresses instead of segment numbers.

The crasher.c is a program that essentially calls some functions and
then writes to invalid address causing a crash. Before that, it detects
which executables are mapped to which virtual addresses and writes this
information to a file suitable for consumption by test-coredump-unwind.
The mapping information is obtained form /proc/self/maps, so currently
it only works on linux.

The test itself is a shell script, which first runs the program and then
runs test-coredump-unwind on the resulting core and address space
map file to check whether the stack trace obtained from the dump roughly
corresponds to what it should look like.

Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-05-31 11:00:40 +02:00
Konstantin Belousov
61a173763e Fix test build on FreeBSD. 2012-05-24 12:45:23 +03:00
Martin Milata
d93d96ad83 Fix compilation on IA64
- Add tdep macro for {dwarf,ia64}_find_unwind_table so that ia64
   doesn't try to use dwarf code.
 - Fix extraneous #if.
 - Fix mistyped filename in Makefile.am.
 - Link ia64-specific tests with correct libraries.

Signed-off-by: Martin Milata <mmilata@redhat.com>
2012-05-23 20:52:28 -07:00
Arun Sharma
fa5409387c Merge branch 'coredump2' of https://github.com/adsharma/libunwind
Conflicts:
	src/ptrace/_UPT_find_proc_info.c
2012-05-23 20:51:50 -07:00
Arun Sharma
dd297ea92e Revert "x86_64: unbreak test-ptrace"
This reverts commit c9c5a40be1.
dwarf_get() returns 0 on success. We should continue unwinding
in that case.

TBD: investigate test-ptrace failure on some platforms.
2012-05-18 15:24:02 -07:00
Arun Sharma
c9c5a40be1 x86_64: unbreak test-ptrace
If dwarf_get returns 0 (indicating the end of call chain), we should
not override the return value to 1. This may result in the caller
continuing to unwind and getting spurious errors.
2012-05-16 07:49:30 -07:00
Konstantin Belousov
1a6ea3da60 freebsd: Fix boundary conditions for non-dwarf walker on x86_64.
In the commit d04dc94cc2, the check for
dwarf.ip == 0 was removed from non-dwarf walker in x86_64 version of
unw_step(). Apparently this broke the detection of the end of frame
chain when NULL %rbp is specified, because the case just marked
dwarf.ip as 0. Explicitly set ret to 0 to indicate the end of
iteration.
2012-05-14 23:18:00 -07:00
Konstantin Belousov
3bb74aae3d freebsd: Account for the possible ERESTART handling of the syscalls. 2012-05-14 23:07:52 -07:00
Konstantin Belousov
5f440b4af2 freebsd: Workaround for old FreeBSD kernels
Older kernels interpret the pid argument of the process information
sysctls as pid only. If libunwind UPT consumer passed tid to _UPT_create,
tdep_get_elf_image() returns error due to sysctls failure. Provide a
slow workaround by searching for a process owning the supplied tid if
sysctl returned ESRCH.
2012-05-14 23:07:52 -07:00
Konstantin Belousov
f8858bacca freebsd: Fix logic error
When encountered vm map entry is not backed by a vnode, continue search
for matching entry instead of aborting the loop.
2012-05-14 23:07:51 -07:00
Konstantin Belousov
0fac4c8109 freebsd: Consistently use symbolic name UNW_EUNSPEC for errors 2012-05-14 23:07:51 -07:00
Jiri Olsa
69e300e8f6 dwarf: Get correct return from expression evaluation
Currently the expression evaluation always succeeds,
and possible error is not propagated to the caller.

The ',' operator makes the condition always return 0.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Paul Pluzhnikov <ppluzhnikov@google.com>
2012-04-16 07:13:54 -07:00
Arun Sharma
cbc66b62c0 mips: fix a linker error
Signed-off-by: Andreas Oberritter <obi@opendreambox.org>
2012-04-09 19:48:49 -07:00
Arun Sharma
9507a9b501 ia64: move ia64 specific code out of dwarf
We still need to fixup the callers to pick dwarf_find_unwind_table
vs ia64_find_unwind_table in a target dependent way.
2012-03-29 11:35:26 -07:00
Arun Sharma
bc056ffc9f coredump: update license to be the same as rest of libunwind
Per Denys Vlasenko <dvlasenk@redhat.com>:

Sure. It's a trivial file, I don't mind if you use
whatever license you like on it :)
2012-03-26 19:07:58 -07:00
Alexander Larsson
edcc521a0e Add helper macros for pointer arithmetics
ALIGN lets you align pointers and STRUCT_MEMBER lets you get
structure members at a specific offset.

These are useful in general, and will be needed for the coredump notes
cleanup work.
2012-03-26 19:04:01 -07:00
Alexander Larsson
b1393b7e63 Clean up the elf notes handling in the coredump code
We centralize the elf notes handling code in some macros, thus
simplifying the loops over the notes and avoiding code duplication.
2012-03-26 18:59:49 -07:00
Arun Sharma
49ca8b6a3e ia64: remove references to an out of scope local
This causes problems with gcc-4.7

Signed-off-by: Joel Brobecker <brobecker@adacore.com>
2012-03-26 18:54:53 -07:00
Arun Sharma
5e59e93d04 dwarf: introduce a valid bit for dwarf_reg_state_t
Without this, cache_match() returns true when (ip == 0).
2012-03-25 18:33:40 -07:00
Arun Sharma
d04dc94cc2 dwarf: ip == 0 should't terminate unwind 2012-03-25 18:10:10 -07:00
Arun Sharma
43e5ee28c0 Demote the debug level to reduce verbosity 2012-03-25 17:44:53 -07:00
Arun Sharma
0628a9872c Whitespace cleanup 2012-03-23 22:34:42 -07:00
Alexander Larsson
0c0ea23cf2 Add support for multiple threads in core files
_UCD_select_thread() lets you select the active thread from
the core file and _UCD_get_num_threads() tells you how many there are.
2012-03-23 22:07:17 -07:00
Alexander Larsson
d627481783 Break out the ifdefs for the UCD_info.prstatus type
This cleans up the code a bit and makes it easier to refer to
the prstatus type in other places.
2012-03-23 22:07:14 -07:00
Alexander Larsson
b9ff650a22 Add _UCD_get_pid and _UCD_get_cursig
These let you get the pid and the current signal from the coredump.

This isn't strictly unwind related, but these are trivial to implement
as we have the info, and you almost always want these when you're
printing a backtrace from a core file.
2012-03-23 22:07:11 -07:00
Alexander Larsson
adbeb79155 Fix build with --enable-debug
This just fixes a typo
2012-03-23 22:07:07 -07:00
Arun Sharma
46dfe3ecf5 Fixup whitespace in Makefile. 2012-03-14 17:20:58 -07:00
Kostik Belousov
cc7c74e691 On FreeBSD, the structure is called prstatus. 2012-03-13 18:15:39 +02:00
Kostik Belousov
dc9be1a97a Implement register read for FreeBSD coredumps.
Rename _UCD_access_reg.c to _UCD_access_reg_linux.c, to have
per-OS coredump register reader.
2012-03-13 14:00:01 +02:00