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3052 commits

Author SHA1 Message Date
Arun Sharma
83cef8b8f5 Don't check C++ ABI when it's not enabled. 2009-03-16 21:34:49 -07:00
Arun Sharma
576b59e4b1 Verify that we don't call malloc when unwinding locally. 2009-03-16 21:34:48 -07:00
Arun Sharma
a2c27a4ab7 Make .debug_frame support optional.
Because these code paths use malloc and stdio, they could
cause deadlocks when we try to unwind stack from inside malloc.
2009-03-16 21:21:58 -07:00
David Mosberger-Tang
638302ed73 Rerun autoreconf. 2008-06-16 14:43:21 -06:00
Arun Sharma
ef29eade44 This patch eliminates one system call per unwind by not using the
getcontext in libc.

Also cleanup the namespace (check-name-space passes on x86_64 now).
Replace uses of offsets.h with ucontext_i.h.
Rename _x86_64_setcontext to _Ux86_64_setcontext.

TBD: Add CFI annotations for get/setcontext.

Signed-off-by: Paul Pluzhnikov <ppluzhnikov@google.com>
Signed-off-by: Arun Sharma <arun.sharma@google.com>
2008-06-16 14:42:16 -06:00
Arun Sharma
649f1fb344 [X86-64] For local unwinding, we have a defence mechanism against
bad/missing unwind information, which could result in libunwind
dereferencing bad pointers. This mechanism is based on msync(2) system
call and significantly reduces the chances of a bad pointer
dereference in libunwind.

The original idea was to turn this mechanism on only when necessary
i.e. libunwind didn't find proper unwind information for a IP.

There are a couple of problems in the current implementation.

* The flag is global and is modified without locking
* The flag isn't reset when starting a new unwind

The attached patch makes ->validate a per-thread setting by moving it
into struct cursor from unw_local_addr_space and resets it to false
when starting a new unwind. As a result, cursor->as_arg points to the
cursor itself instead of the ucontext (for the local case).

This was found to reduce the number of msync() system calls from an
application using libunwind significantly.

Signed-off-by: Paul Pluzhnikov <ppluzhnikov@google.com>
Signed-off-by: Arun Sharma <arun.sharma@google.com>
2008-06-16 14:35:53 -06:00
David Mosberger-Tang
183d28a066 Rebuild autoconf files with autoreconf. 2008-06-16 14:30:38 -06:00
Arun Sharma
8081e82ba1 Make the linking of C++ ABI related code for exceptions optional.
The default is to have it enabled.

Signed-off-by: Arun Sharma <arun.sharma@google.com>
2008-06-16 14:28:36 -06:00
Bruna Moreira
1eddefc371 [ARM] This patch add some missing bits on ARM platform.
* src/arm/unwind_i (arm_lock, arm_local_resume): Define.
 * src/ptrace/_UPT_find_proc_info.c: Handle ARM like X86 etc.
 * tests/flush-cache.S (flush_cache): Add (dummy) ARM-version.
	ARM does need executable stack, even on Linux...

Signed-off-by: Anderson Lizardo <anderson.lizardo@indt.org.br>
Signed-off-by: Bruna Moreira <bruna.moreira@indt.org.br>
2008-04-21 13:43:18 -06:00
Bruna Moreira
6f282a00f5 [ARM] This patch fix some testsuite issues on ARM:
- Gtest-bt: like on x86/-64, the stack size passed to sigaltstack() is
  too small for ARM thus causing segmentation fault due to stack
  overflow.

- Gtest-dyn1: code size definition of dynamic function (template()) on
  testcase is too big for ARM architecture so memcpy() reads invalid
  memory causing random crashes (segmentation fault). A better
  solution would be to compile the function in a separate binary,
  mmap() it and memcpy() from it instead, so maximum size is known for
  sure.

- check-name-space.in: fix some "bashisms", it causes the script to
  fail to run on N8XX's busybox shell.

Signed-off-by: Anderson Lizardo <anderson.lizardo@indt.org.br>
Signed-off-by: Bruna Moreira <bruna.moreira@indt.org.br>
2008-04-21 13:39:11 -06:00
Paul Pluzhnikov
bb9d3dc689 [X86-64] Fix the pattern used to match signal frames.
The current pattern is too restrictive and doesn't work well on
modern glibcs.

Signed-off-by: Paul Pluzhnikov <ppluzhnikov@google.com>
Signed-off-by: Arun Sharma <arun.sharma@google.com>
2008-04-16 08:05:49 -06:00
Daniel Jacobowitz
3842dac733 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).
2008-02-04 17:16:37 -07:00
Mark Wielaard
5ed2da2a40 [DWARF] Fix error return.
* src/dwarf/Gfde.c (dwarf_extract_proc_info_from_fde):
	  Return -UNW_ENOMEM.
2008-02-04 16:31:34 -07:00
David Mosberger-Tang
f5cb2c52dc 2007-12-14 Mark Wielaard <mwielaard@redhat.com>
* src/mi/Gget_reg.c (unw_get_reg): Use tdep_get_ip() when
   looking for UNW_REG_IP.
2008-01-07 15:43:42 -07:00
David Mosberger-Tang
a8be10e251 [X86] Cleanup XMM handling for x86
* Use explicit types for XMM registers
* Support full width (128 bits) access

Signed-off-by: Andrew Cagney <cagney@redhat.com>
Signed-off-by: Arun Sharma <aruns@google.com>
2008-01-07 15:41:20 -07:00
David Mosberger-Tang
32145b680d Merge ../libunwind-v0.98 2007-12-10 09:36:06 -07:00
David Mosberger-Tang
4759b8eaf8 Mark tests/perf-startup executable. Suggested by Mark Wielaard. 2007-12-10 09:35:52 -07:00
David Mosberger-Tang
79c943b922 Make tests/perf-startup executable. Suggested by Mark Wielaard. 2007-12-10 09:34:57 -07:00
David Mosberger-Tang
5ffab805cb Merge ../libunwind-v0.98
Conflicts:

	README
	configure
	configure.in
2007-11-14 16:59:14 -07:00
David Mosberger-Tang
826374cee5 Merge ../libunwind-v0.98
Conflicts:

	configure
	configure.in
	src/ia64/Ginit.c
2007-11-14 16:51:14 -07:00
David Mosberger-Tang
3550b501b1 Update mailing-list info. 2007-11-14 16:47:28 -07:00
David Mosberger-Tang
3899ab7039 Update NEWS file and rerun "autoreconf". 2007-11-14 13:04:15 -07:00
Curt Wohlgemuth
7fda769769 ia64 [src/ia64/Ginit.c]: Don't mark the reference to _Uelf64_get_proc_name
as "weak".  Since the elf-support is in the library anyhow, this serves
     no purpose and in fact causes problem because the weak reference alone
     is not enough to pull in the ELF-code from an archive file, causing to
     spurious failures of get_proc_name.
2007-11-14 12:59:10 -07:00
Curt Wohlgemuth
253f3e5738 [Linux] Fix potentially overlapping memory-copy to use memmove() instead
of memcpy().
2007-10-18 10:45:55 -06:00
David Mosberger-Tang
87247220a9 Update mailing-list info in README. Thanks to Curt Wohlgemut for pointing
this out.
2007-10-15 17:48:26 -06:00
Andrew Cagney
05c8284b43 [X86] 2007-10-10 Andrew Cagney <cagney@redhat.com>
* src/x86/init.h (common_init): Fix typo: use UNW_X86_ESI for
     dwarf.loc[ESI].

Acked-by: Arun Sharma <aruns@google.com>
2007-10-15 10:32:07 -06:00
Jose Flavio Aguilar Paulino
9ea6af8ed5 [PPC32] Make PPC32 unwinding work for real. 2007-10-08 12:33:18 -06:00
Jan Kratochvil
57e5696463 Mark Wielaard <mwielaard@redhat.com> writes:
On some systems executable stacks are denied. Since libunwind and the
tests don't actually need executable stacks this patch marks all
assembly files as not needing it.

The original patch comes from frysk:

2007-04-05  Jan Kratochvil  <jan.kratochvil@redhat.com>

    * src/hppa/getcontext.S, src/hppa/setcontext.S, src/hppa/siglongjmp.S,
    src/ia64/Ginstall_cursor.S, src/ia64/Linstall_cursor.S,
    src/ia64/dyn_info_list.S, src/ia64/getcontext.S, src/ia64/longjmp.S,
    src/ia64/setjmp.S, src/ia64/siglongjmp.S, src/ia64/sigsetjmp.S,
    src/ppc64/longjmp.S, src/ppc64/siglongjmp.S, src/x86/longjmp.S,
    src/x86/siglongjmp.S, src/x86_64/longjmp.S, src/x86_64/setcontext.S,
    src/x86_64/siglongjmp.S: Stack should be non-executable, for SELinux.

I added a couple more markers for new files in current libunwind.

Before this patch you would get the following on selinux enabled
systems without allow_exec_stack: error while loading shared
libraries:

libunwind.so.7: cannot enable executable stack as shared object
	requires: Permission denied

After the patch that error disappears and all test results are similar
to the results on systems without executable stack protection.
2007-10-01 08:35:01 -06:00
Jose Flavio Aguilar Paulino
c340d04279 [PPC32] Make get_func_addr() a no-op function.
[PPC64] Add .../lib64 library directory when targeting ppc64.
2007-09-20 11:11:37 -06:00
Jose Flavio Aguilar Paulino
4499bb29a6 [PPC32] First check-in to add preliminary support for Linux/PPC32. 2007-09-12 21:52:25 -06:00
David Mosberger-Tang
6d75df39b5 Regenerate Makefile.in. 2007-08-27 15:31:10 -06:00
Jose Flavio Aguilar Paulino
32e2187fab [PPC64] Get "make check" to work on PPC64 Linux. Add a README entry
describing the expected results.
2007-08-27 09:11:37 -06:00
Jose Flavio Aguilar Paulino
3e24581adc [PPC64] Add PPC64 entry to README and fix David's typo in ppc64/get_func_addr.c 2007-08-24 10:54:00 -06:00
David Mosberger-Tang
e6b9f350f7 Introduce a tdep_get_func_addr_hook() in the ELF lookup_symbol()
routine and add address-space argument.  This is needed because on
PPC64, a the function-name symbol refers to a function descriptor
(unlike, for example, on ia64, where the @fptr() operator is needed to
refer to a function descriptor).  Thus, in order to look up the name
of a function, we need to dereference the function descriptor.  To
make matters more "interesting", the function descriptors are normally
resolved by the dynamic linker, so we can't get their values from the
ELF file.  Instead, we have to read them from the running image, hence
the need for the address-space argument.
2007-08-22 13:02:09 -06:00
David Mosberger-Tang
03e05b4138 Fix two minor compiler-warnings. 2007-08-22 12:57:49 -06:00
David Mosberger-Tang
75f34ccb7d Update documentation and regenerate manual-pages. 2007-08-22 12:49:08 -06:00
David Mosberger-Tang
7aca85a85d Update html-versions of man-pages for Savannah-based home page. 2007-08-15 22:21:52 -06:00
David Mosberger-Tang
7fdd022ccf Update autoconf files. 2007-08-09 21:18:15 -06:00
David Mosberger-Tang
25739eec86 [IA64] Fix ia64-test-setjmp.c. With MAP_SHARED the kernel will try to
find a 1MiB-aligned region, which isn't what we want here.
2007-08-09 16:26:58 -06:00
Arun Sharma
bcca3ddcc0 [x86-64] Fix cross-compilation. setcontext.S can only be built natively. 2007-08-07 21:09:12 -06:00
David Mosberger-Tang
7c289a617b Delete explanation of how to build libunwind on ia64 with v7 of the
Intel compiler.  I don't think anybody is still likely to need
building with such an old compiler.
2007-08-06 20:51:26 -06:00
David Mosberger-Tang
297315675e Recreate autoconf files. 2007-08-06 20:27:29 -06:00
David Mosberger-Tang
955d1272a7 Update NEWS and README files a bit. 2007-08-06 20:26:50 -06:00
Jose Flavio Aguilar Paulino
a1e7ee4836 Just a small patch to build system, it helps if you build in a power
without altivec.
2007-08-06 20:23:42 -06:00
David Mosberger-Tang
5c95d139df Cleanup some files from previous patch and rerurn autoconf tools. 2007-08-06 19:59:28 -06:00
Arun Sharma
3afd613545 [X86-64]: Instead of auto-generating _u_context_i.h, hardcode the
necessary offsets in offsets.h as is done for other
	  platforms.  This fixes cross-builds.
2007-08-06 19:58:12 -06:00
David Mosberger-Tang
fad8b04c9f Rebuilt configure and Makefile.in files. 2007-08-06 19:56:28 -06:00
Jose Flavio Aguilar Paulino
b33021e4b2 Add PPC64 support. 2007-08-02 09:59:43 -06:00
David Mosberger-Tang
a6393c0be1 Merge ../libunwind-v0.98 2007-06-06 20:58:56 -06:00
David Mosberger-Tang
899ffbaa39 Update NEWS file. 2007-06-06 20:58:25 -06:00