| f622936d6c5239b3d5ccafdf38189cec8bca55c0 |
15-Apr-2014 |
Christopher Ferris <cferris@google.com> |
Make sure that all memory accesses are guarded.
This doesn't protect the fpreg reads completely. It's still possible to have
a bad address that has the first part in readable memory and the second part
in unreadable memory. Since none of the code android uses uses the fpreg
data, this should be okay.
Bug: 13946101
Change-Id: I9187b16d0427cbc8af6751cf0b8476ea2d1bfc38
ibunwind_i.h
|
| f4a8df5f4f338f1a12c25213227e98b34b42447f |
08-Mar-2014 |
Christopher Ferris <cferris@google.com> |
Fix maps caching for local processes.
It is possible for the map to change while running libunwind. For example,
if lots of threads are doing local unwinds at the same time. Allow the
cached map to regenerate when it detects this case.
Included in this change is a refactor of all of the os code so that it can
also be used to do caching. This is a prelude to being able to attempt to
push the code upstream.
Also, this moves the code back closer to the original upstream code.
Hopefully, this will allow me to upstream all of these changes.
Change-Id: Ia219fa61e16e36416133bc95b1dd2161bd5b8ff7
ibunwind_i.h
|
| 16b95a68caaa7e021209e2cd6a877ae1e558f740 |
23-Jan-2014 |
Christopher Ferris <cferris@google.com> |
Add speed-ups to libunwind.
Add caching of /proc/self/maps data structures.
Add caching of elf image maps attached to the maps data structure.
Add a set of new map api functions to handle creation/destruction of the
maps by external code.
Remove the creation of the maps data structure in the local address space
init.
Change-Id: I0adae397d433fc3902f83a6f377f6889161937e5
ibunwind_i.h
|
| 7d46a21e0a2cb561e4cad57b101a7137e01023dc |
14-Nov-2013 |
Christopher Ferris <cferris@google.com> |
For current process, check memory accesses.
When attempting to unwind the current process, the library simple reads and
writes to memory for memory accesses. Unfortunately, if an unwind winds up
with invalid data, then the process can segfault. Add a guard to all memory
accesses that verifies that reads/writes are valid before attempting them.
For now, this guard is a nop on all systems except linux systems.
Also, modify the adjust_ip function to use the access_mem function
so that all reads go through the right function.
Bug: 11652982
Change-Id: I9d1feacae585374f6bf1d899f8a006ec9ecb47c4
ibunwind_i.h
|
| efb75a0b84fed700173700a2e4fee153ba491b32 |
01-Oct-2013 |
Christopher Ferris <cferris@google.com> |
Update external/libunwind to build in android.
Bug: 8410085
Change-Id: Ideb46602d1e1cf2df5f858ef11d498055c02b969
ibunwind_i.h
|
| 5d0f376b08126b51a001d7cdfba1ec4e0d644f54 |
21-Sep-2012 |
Tommi Rantala <tt.rantala@gmail.com> |
Invert tdep_init() flag logic
Invert the flag that signals that tdep_init() was called, to move the
symbol from data to BSS.
ibunwind_i.h
|
| 1dc66bd1817e5664326f468ed0b56eb3a24d1ccd |
07-Aug-2012 |
Tommi Rantala <tt.rantala@gmail.com> |
ARM: implement dwarf_to_unw_regnum() macro without table
warf-config.h
|
| d93d96ad833390519ea68a2df22dd55dd26a3214 |
22-May-2012 |
Martin Milata <mmilata@redhat.com> |
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>
ibunwind_i.h
|
| 0eba2169fb19ef0707a2c96201e33769001b5f11 |
25-Oct-2011 |
Ken Werner <ken.werner@linaro.org> |
[ARM] Add support for systems that don't support ucontext.h
Define unw_tdep_context rather than using ucontext_t in order to support
systems that lack ucontext.h. Note that POSIX.1-2008 removed getcontext,
makecontext and swapcontext from its specification.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
ibunwind_i.h
|
| d83846f120596ea60f74816947deceb93d0a8944 |
20-Jul-2011 |
Ken Werner <ken.werner@linaro.org> |
ARM: Initial support for remote unwinding using libunwind-ptrace
Change _UPTi_find_unwind_table to also look for the ARM specific unwind
information. Adjust the ARM unwind code to read memory using the accessor
routines.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| 545023c2072975c6b85a09d5faf2cf05db10e064 |
14-Jul-2011 |
Ken Werner <ken.werner@linaro.org> |
Rework the lookup of the ARM specific unwind info
Implement routines for finding the proc_info and searching the unwind table
for the ARM backend.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
ibunwind_i.h
|
| 25f6b8295d0427746e2a760bb17e63c0461e47f2 |
06-Jul-2011 |
Ken Werner <ken.werner@linaro.org> |
Change address type from void* to unw_word_t.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| 264b101905c53993fd1294cca821cd01fb17e1c8 |
03-Jul-2011 |
Ken Werner <ken.werner@linaro.org> |
Move arm_exidx_entry and arm_exidx_table structs from ex_tables.h into libunwind-arm.h.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| 36511d3d1f040bbf778094e907725ad0617326c8 |
21-Apr-2011 |
Ken Werner <ken.werner@linaro.org> |
Add support for handling signal frames on ARM Linux.
This patch add support for resuming at a certain stack frame even if signal
frames are involved. For restoring the registers the trampoline (sigreturn)
is used. RT and non-RT signal frames are handled for both >=2.6.18 and
<2.6.18 kernels.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
ibunwind_i.h
|
| e2962af9d31266761700b431da894421c0d757ec |
06-Apr-2011 |
Arun Sharma <asharma@fb.com> |
Implement a cheaper getcontext()
Since the fast unwinding code path doesn't need the full context,
a faster target dependent getcontext is implemented.
Signed-off-by: Lassi Tuura <lat@cern.ch>
ibunwind_i.h
|
| fd21d07fe422aacea422a8942ac2cc3f363f0fce |
01-Apr-2011 |
Ken Werner <ken.werner@linaro.org> |
Create a generic and local variant of the extbl parser.
In order to have the DWARF_* macros working properly a generic and a local
variant of the ex_tables.c have been created.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| 5f38f35d5d6c78aafa6da20845d9ceff74af00f8 |
01-Apr-2011 |
Lassi Tuura <lat@cern.ch> |
Drop a call frame in tdep_trace and avoid a call to unw_step.
Dropping the extra frame for unw_backtrace itself using unw_step is
approximately 15% slower than skipping the frame in tdep_trace. So
drop the frame in the latter, and make the function a private
implementation detail for libunwind, not an exported interface.
Also moves unw_getcontext call back into unw_backtrace to avoid an
extra call frame in case slow_backtrace does not get inlined into
unw_backtrace.
ibunwind_i.h
|
| 9e98f15e9aee12e67cd5956d06ccb559f6a06213 |
19-Mar-2011 |
Lassi Tuura <lat@iki.fi> |
Fast back-trace for x86_64 for only collecting the call stack.
Adds new function to perform a pure stack walk without unwinding,
functionally similar to backtrace() but accelerated by an address
attribute cache the caller maintains across calls.
ibunwind_i.h
|
| f053677198a54bf4fb2931f45f52fcc5d32f4360 |
23-Mar-2011 |
Ken Werner <ken.werner@linaro.org> |
Remove the ARM_EXIDX_TABLE_MALLOC code path.
Using malloc is not an option since unw_init_local and unw_step are supposed
to be async signal safe. Therefore this code path can be removed.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| 6296ff1fb2cf8753128d35b57cabecd2faea4f88 |
23-Mar-2011 |
Ken Werner <ken.werner@linaro.org> |
Remove the appname string of the ARM extbl parser.
There is no need for libunwind to set/fake a name of the elf file from which
the program header came from.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| fb325c895e45052367f0a2ab04c107ca20f40a41 |
23-Mar-2011 |
Ken Werner <ken.werner@linaro.org> |
ARM extbl cleanup.
Move code that does not necessarily need to reside in the ex_tables.h header
file into ex_tables.c. Add comments and remove unused code.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
|
| cf8d5e41af582b9070576889dcc479397a19bf48 |
23-Mar-2011 |
Ken Werner <ken.werner@linaro.org> |
Have the ARM extbtl-parser operate on the DWARF model directly.
This eliminates the arm_stackframe and therefore the need to synchronize the
two models. It also clears the way for unwinding call stacks with mixed
DWARF- and extbl-frames.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
ibunwind_i.h
|
| 6a671546741e8355dd9f821f171e4a3c895d28ec |
15-Mar-2011 |
Zachary T Welch <zwelch@codesourcery.com> |
Use ARM-specific unwinding tables in unw_step
Uses ex_tables routines to provide a new means of unwinding the stack.
Set UNW_ARM_UNWIND_METHOD=4 to use ARM-specific unwinding tables.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
ibunwind_i.h
|
| ffc474b8c8972200642acaef3e5aa10ee853609a |
15-Mar-2011 |
Zachary T Welch <zwelch@codesourcery.com> |
Add module for parsing ARM-specific unwind tables
Handles lookup, extracting unwind entries, and decoding the entry
using a callback mechanism.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
x_tables.h
ibunwind_i.h
|
| ec633a1911e365ba6016fa9fcbd81cad72f7afdb |
02-Mar-2011 |
Ken Werner <ken.werner@linaro.org> |
Use UNW_OBJ instead of UNWI_ARCH_OBJ to rename unwi_unwind_method on ARM.
This results in different unwi_unwind_method symbol names for the local and
generic versions. It allows to statically link against both libraries.
Signed-off-by: Ken Werner <ken.werner@linaro.org>
ibunwind_i.h
|
| 00aed9631b112d7aa7adc98054b62549cfc857da |
27-May-2010 |
Arun Sharma <arun@sharma-home.net> |
Add an experimental and optional frame chain unwinding for ARM
The environment variable UNW_ARM_UNWIND_METHOD controls the unwind method.
1 - debug_frame unwinding
2 - frame chain unwinding,
3 - 1 & 2 (default))
Signed-off-by: Andris Zeila <andris.zeila@accenture.com>
ibunwind_i.h
|
| 1787a2fd284a786b409af74047a12de02c644cd1 |
15-May-2010 |
Arun Sharma <arun@sharma-home.net> |
Add path and pathlen arguments to tdep_get_elf_image()
Signed-off-by: Andris Zeila <andris.zeila@accenture.com>
ibunwind_i.h
|
| dac2d001afb1fa7040ca7d8ae57032f684d7023e |
20-Apr-2010 |
Lassi Tuura <lat@cern.ch> |
Identify signal frames by augmentation attribute.
ibunwind_i.h
|
| 3842dac7333e42aa44531eda34ba55200b99ccf8 |
05-Feb-2008 |
Daniel Jacobowitz <drow@false.org> |
Add initial ARM and MIPS support. To support this, also enable the
reading of .debug_frame sections (used in lieu of .eh_frame sections
when they're not available).
warf-config.h
mpbuf.h
ibunwind_i.h
|