| f4a8df5f4f338f1a12c25213227e98b34b42447f |
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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
/external/libunwind/src/ppc/Ginit_local.c
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| 0996405de25a3aab5045d20803c8f0a5441d0c57 |
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01-Feb-2014 |
Christopher Ferris <cferris@google.com> |
Fix memory corruption bug.
There are two problems, some of the init code needs the map created before
the init function since it does a verify check during init. The second
problem is that the local addr space seems to change for reasons I don't
understand, so it's necessary to init the map list when doing a unw_cursor
init.
Bug: 12852152
Change-Id: I32246d7c5adf7e24192868cb32a8c2fdc53c12f0
/external/libunwind/src/ppc/Ginit_local.c
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| 16b95a68caaa7e021209e2cd6a877ae1e558f740 |
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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
/external/libunwind/src/ppc/Ginit_local.c
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| 7d46a21e0a2cb561e4cad57b101a7137e01023dc |
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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
/external/libunwind/src/ppc/Ginit_local.c
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| 5d0f376b08126b51a001d7cdfba1ec4e0d644f54 |
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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.
/external/libunwind/src/ppc/Ginit_local.c
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| a9dce3c06e6ffcb83957e734d960505415118f00 |
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25-Apr-2010 |
Lassi Tuura <lat@cern.ch> |
During the stack unwinding process, the return address points to
the instruction after the call for a normal frame. libunwind uses
IP-1 to lookup unwind information. However, this is not necessary for
interrupted frames such as signal frames (or interrupt frames) in
the kernel context.
This patch handles both cases correctly.
Based on work by Mark Wielaard <mwielaard@redhat.com>
/external/libunwind/src/ppc/Ginit_local.c
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| 4499bb29a6214b5df5b3b21e03c6b4f3c8f26cfd |
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13-Sep-2007 |
Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> |
[PPC32] First check-in to add preliminary support for Linux/PPC32.
/external/libunwind/src/ppc/Ginit_local.c
|