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Author SHA1 Message Date
Arun Sharma
00aed9631b 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>
 2010-05-26 19:28:44 -07:00
Arun Sharma
46e10c5abe Support .debug_frame based unwinding in _UPTi_find_unwind_table() 
Signed-off-by: Andris Zeila <andris.zeila@accenture.com>
 2010-05-26 19:25:41 -07:00
Arun Sharma
546463d1e7 Factor out and export dwarf_find_debug_frame() function 
Signed-off-by: Andris Zeila <andris.zeila@accenture.com>
 2010-05-26 19:21:30 -07:00
Arun Sharma
1787a2fd28 Add path and pathlen arguments to tdep_get_elf_image() 
Signed-off-by: Andris Zeila <andris.zeila@accenture.com>
 2010-05-15 12:14:09 -07:00
Lassi Tuura
a9dce3c06e 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>
 2010-04-24 19:16:09 -07:00
Lassi Tuura
dac2d001af Identify signal frames by augmentation attribute. 2010-04-24 17:18:26 -07:00
Konstantin Belousov
fd88f41818 Merge remote branch 'origin/master' into freebsd 
Conflicts:
	src/x86/Gis_signal_frame.c
	src/x86/Gstep.c
	src/x86_64/Gis_signal_frame.c
	src/x86_64/Gstep.c
 2010-04-05 16:14:50 +03:00
Arun Sharma
8e53e62db9 Refactor os specific code for x86 (both 32 and 64 bit). 
Move Linux specific code into ${arch}/Gos-linux.c
 2010-04-04 16:46:13 -07:00
Konstantin Belousov
e9cd30040e Move x86 porting further. 2010-03-13 20:28:12 +02:00
Konstantin Belousov
71c4161247 Remove extra empty line 2010-03-13 18:33:22 +02:00
Konstantin Belousov
bdee34d766 Jump buffer indices for FreeBSD/x86. 2010-03-13 16:48:14 +02:00
Konstantin Belousov
c61e0b932c Add sys/types.h for x86. 2010-03-09 17:37:52 +02:00
Konstantin Belousov
71cbdc697f Provide real values for jmpbuf offsets for FreeBSD 2010-03-08 21:49:38 +02:00
Konstantin Belousov
752ce15c4f Preliminary version of freebsd syscall unwinder 2010-03-08 19:45:54 +02:00
Konstantin Belousov
093855f12a Remove unneeded includes of sys/types.h 2010-03-08 00:25:22 +02:00
Konstantin Belousov
64b5391b7b Include sys/types.h once 2010-03-08 00:24:32 +02:00
Konstantin Belousov
c64723835c Support walk over freebsd sigframes 2010-03-07 21:53:01 +02:00
Konstantin Belousov
3eabce18b1 Include sys/types.h when needed. 2010-03-06 16:43:39 +02:00
Konstantin Belousov
8ccebc9307 MAP_ANONYMOUS 2010-03-06 16:23:24 +02:00
Konstantin Belousov
905034ce72 Initial attempt at the build infrastructure for FreeBSD. 2010-03-06 00:41:37 +02:00
Stefan Demharter
752076789f Be gcc compatible for C++ exceptions on 32 bit platforms. 2010-02-21 22:45:08 -08:00
Paul Pluzhnikov
54752e0df0 Implement getcontext for x86 
Greetings,

Attached patch implements getcontext for x86.

Motivation is the same as:
http://lists.nongnu.org/archive/html/libunwind-devel/2008-06/msg00009.html

This also fixes check-name-space on x86.

Tested on Linux/86 with no new failures.

Thanks,
--
Paul Pluzhnikov
 2009-12-23 09:59:52 -08:00
Arun Sharma
f88e949d16 Set UNW_TDEP_SP on x86 to ESP 
This is similar to what has been done on other archs and resolves an out of
bounds array access elsewhere.
 2009-11-11 21:58:15 -08:00
Arun Sharma
3067acf172 Remove duplicate calls to mark_as_used 2009-10-17 22:45:30 -07:00
Arun Sharma
4ab26bcdaa Fix compiler warnings seen with --disable_block_signals 2009-10-16 15:52:44 -07:00
Arun Sharma
491d576529 Fix compiler warnings on x86_64 2009-10-16 14:01:50 -07:00
Arun Sharma
af9daf66af Fix the naming of the sigprocmask parameters. 2009-10-15 19:29:49 -07:00
Paul Pluzhnikov
839db77b7b Wait if there is contention on the cache 
The behavior on wait vs abort unwind depends on the locking primitive
chosen by the user. This makes the API consistent and independent of
the locking primitive.
 2009-09-25 09:38:55 -07:00
Paul Pluzhnikov
9aa0d6d680 Allow caller to block signals. 
Greetings,

Here is the second part, actually implementing the configure option.

Thanks,
--
Paul Pluzhnikov

commit cf823ed0d4d2447aa91af0e3cb5fbb6a6cba5068
Author: Paul Pluzhnikov <ppluzhnikov@google.com>
Date:   Mon Sep 21 11:37:38 2009 -0700

    New configure option to allow caller to block signals.
 2009-09-25 09:36:41 -07:00
Arun Sharma
35e6a1a108 This avoids a C++ syntax error with a (non-gcc?) compiler. 
Signed-off-by: Lassi Tuura <lat@cern.ch>
 2009-08-27 17:01:17 -07:00
Arun Sharma
b483ea3f0e Multilib support. 
This is useful when packaging for multiple target architectures.

Signed-off-by: Jan Kratochvil <jan.kratochvil@redhat.com>
 2009-04-13 12:00:31 -07:00
Arun Sharma
aaed432328 Remove more autogenerated files. 2009-04-13 10:50:51 -07:00
Arun Sharma
2fce54102c Implement _Unwind_GetIPInfo() as required by the C++ ABI 
Provide a special implementation for ia64, because the unwind
information is such that an IP adjustment is not necessary before
looking up unwind info.

Bad things happen if libunwind only provides parts of the ABI and
the rest come from libgcc.

Signed-off-by: Jan Kratochvil <jan.kratochvil@redhat.com>
 2009-04-02 22:22:05 -07:00
Arun Sharma
9607c6407c Fixup CONFIG_DEBUG_FRAME support. 2009-03-17 19:08:58 -07:00
Arun Sharma
ec53de82ec [PATCH] Avoiding name conflict with the GNU-specific dprintf in stdio.h 
Signed-off-by: Yang Zhang <yaaang@gmail.com>
 2009-03-16 21:37:11 -07:00
Arun Sharma
ff0ae70cc3 Bad pointer validation for 32 bit x86. 
This corresponds to commit 649f1fb344.

Signed-off-by: Paul Pluzhnikov <ppluzhnikov@google.com>
 2009-03-16 21:34:49 -07:00
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
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
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
Jose Flavio Aguilar Paulino
9ea6af8ed5 [PPC32] Make PPC32 unwinding work for real. 2007-10-08 12:33:18 -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
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
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
Arun Sharma
be02d9ac0d dwarf.h needs atomic_ops.h. So include it. 2006-08-16 15:39:52 -06:00
David Mosberger-Tang
b3f25f65af [dwarf] Include <config.h> in dwarf.h since it's testing HAVE_ATOMIC_OPS_H. 
Reported by Arun Sharma.
 2006-08-10 21:44:14 -06:00
Arun Sharma (अरुण)
795529eee3 [x86-64] Add a known good address cache. 
This improves the performance of Lperf-simple from 500ns to 195ns
on the avg.

Signed-off-by: Arun Sharma <arun.sharma@google.com>
 2006-08-10 21:30:01 -06:00
David Mosberger-Tang
1fdb08e5fc Various fixes to get x86 to compile and work again. 
include/dwarf.h: Declare dwarf_reg_state_pool and dwarf_cie_info_pool.
include/dwarf_i.h: Include libunwind_i.h instead of tdep.h.
	Make dwarf_to_unw_regnum() a macro so it doesn't get compiled
	into an object file merely because it include dwarf_i.h (important
	when optimization is turned off).
	(dwarf_read_encoded_pointer_inlined): New function.
include/tdep-x86/libunwind_i.h: Add include of "mempool.h".
include/tdep-x86_64/libunwind_i.h: Add include of "mempool.h".
 2006-07-26 22:36:03 -06:00
Arun Sharma
11ea1275bd [dwarf] The sword() function in Gexpr.c doesn't do what's intended. 
Yes, it casts to signed, but then converts right back to
unsigned via the return type.  Fixed thus.

Signed-off-by: Richard Henderson <rth@redhat.com>
Signed-off-by: Arun Sharma <arun.sharma@google.com>
 2006-07-26 22:12:10 -06:00
Arun Sharma
8cdd8bfed8 [x86-64] Make even UNW_LOCAL_ONLY accessors go through validation. 
Signed-off-by: Arun Sharma <arun.sharma@google.com>
 2006-07-26 21:39:46 -06:00
Arun Sharma
c5dc3c150a [dwarf] Allow return address column to differ from function to function. 
Signed-off-by: Andrey Veskov <Andrey.Veskov@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@google.com>
 2006-07-26 21:29:50 -06:00
Arun Sharma
036cbfa020 Fix x86 compilation. 
x86 needs the global_cache just like the x86-64 version.

Signed-off-by: Andrey.Veskov@intel.com
Signed-off-by: Arun Sharma <arun.sharma@google.com>
 2006-07-26 21:20:59 -06:00
Arun Sharma
00db7f752a Implement a ip -> dwarf_reg_state cache. 
Signed-off-by: Arun Sharma <arun.sharma@google.com>
 2006-07-26 21:18:49 -06:00
David Mosberger-Tang
37be21c01e Restore more files wiped out by Bitkeeper->CVS->GIT transition. 2006-07-26 15:09:39 -06:00
David Mosberger-Tang
ca69fee8bb Merge ../libunwind-v0.98 
Conflicts:

	include/dwarf_i.h
	include/x86/jmpbuf.h
	include/x86_64/jmpbuf.h
	src/hppa/init.h
	src/mi/Gget_fpreg.c
	src/mi/Gset_fpreg.c
	src/mi/strerror.c
 2006-07-25 21:41:43 -06:00
David Mosberger-Tang
f176ad6fc6 Bring git v0.98.5 tree in sync with released v0.98.5. 
Sadly, the conversion from Bitkeeper -> CVS -> git wasn't perfect.  Or
so it seems.
 2006-07-25 21:32:28 -06:00
hp.com!davidm
b47b9aa232 UNW_IA64_BSP and UNW_IA64_SP are no longer read-only. 
(Logical change 1.303)
 2005-05-20 15:32:18 +00:00
hp.com!davidm
7a8b0ba617 (rbs_get_base): New macro. 
(Logical change 1.297)
 2005-05-20 13:13:07 +00:00
hp.com!davidm
d5ab898cdf (SOS_MEMORY_SIZE): Move to here from src/mi/mempool.c. 
(Logical change 1.295)
 2005-05-20 11:28:16 +00:00
hp.com!davidm
9d94c8f62b Rename: include/x86_64/jmpbuf.h -> include/tdep-x86_64/jmpbuf.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
e3ac62c5f1 Rename: include/x86_64/jmpbuf.h -> include/tdep-x86_64/jmpbuf.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
3a2c945244 Rename: include/x86/jmpbuf.h -> include/tdep-x86/jmpbuf.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
f6d4c74beb Rename: include/x86/jmpbuf.h -> include/tdep-x86/jmpbuf.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
e6cf7e84eb Rename: include/x86/dwarf-config.h -> include/tdep-x86/dwarf-config.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
d90772c868 Rename: include/x86/dwarf-config.h -> include/tdep-x86/dwarf-config.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
56cea5b4a9 Rename: include/ia64/script.h -> include/tdep-ia64/script.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
12f0ce1a39 Rename: include/ia64/script.h -> include/tdep-ia64/script.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
910087d5b5 Rename: include/ia64/jmpbuf.h -> include/tdep-ia64/jmpbuf.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
e86e18224d Rename: include/ia64/jmpbuf.h -> include/tdep-ia64/jmpbuf.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
983d841e64 Rename: include/hppa/jmpbuf.h -> include/tdep-hppa/jmpbuf.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
f8a07dfb22 Rename: include/hppa/jmpbuf.h -> include/tdep-hppa/jmpbuf.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
400a917a7a Rename: include/hppa/dwarf-config.h -> include/tdep-hppa/dwarf-config.h 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
c56b45e82e Rename: include/hppa/dwarf-config.h -> include/tdep-hppa/dwarf-config.h 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
180a1ececa Initial revision 2005-05-20 09:48:08 +00:00
hp.com!davidm
f9b7af51ed Include <libunwind.h> instead of "internal.h" and "mempool.h". 
(dwarf_reg_state_pool): Move to dwarf_i.h.
(dwarf_cie_info_pool): Likewise.

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
3ad4903154 Include "libunwind_i.h" instead of "tdep.h". 
Include "mempool.h".
(dwarf_reg_state_pool): Move here from dwarf.h.
(dwarf_cie_info_pool): Likewise.
Include "libunwind_i.h" instead of "tdep.h".

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
ead43e8545 Include "libunwind_i.h" instead of "internal.h". 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
59f9f6a1ac Include "libunwind_i.h" instead of "internal.h". 
2005/05/19 08:11:38-07:00 hp.com!davidm
Rename: include/ia64/rse.h -> include/tdep-ia64/rse.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
5724bee8c2 Include "libunwind_i.h" instead of "internal.h". 
(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
5e5db2dada Adjust for renaming of file. 
Drop include of <libunwind.h>.
Include "script.h" instead of "ia64/script.h".

}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
0870c54c2a Adjust for renaming of file. 
Drop include of <libunwind.h>.
Include "script.h" instead of "ia64/script.h".

2005/05/19 07:42:45-07:00 hp.com!davidm
Rename: include/tdep-ia64.h -> include/tdep-ia64/libunwind_i.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
ce46ac7167 Adjust for renaming of file. 
(tdep_put_unwind_info): Adjust for change of arguments.

}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
bea50a5d41 Adjust for renaming of file. 
(tdep_put_unwind_info): Adjust for change of arguments.

2005/05/19 07:42:45-07:00 hp.com!davidm
Rename: include/tdep-x86_64.h -> include/tdep-x86_64/libunwind_i.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
47eca0fadf Adjust for renaming of file. 
(tdep_put_unwind_info): Adjust for change of arguments.

2005/05/19 07:42:45-07:00 hp.com!davidm
Rename: include/tdep-x86.h -> include/tdep-x86/libunwind_i.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
34e70b5937 Adjust for renaming of file. 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
dce55286ab Adjust for renaming of file. 
2005/05/19 07:42:45-07:00 hp.com!davidm
Rename: include/tdep-hppa.h -> include/tdep-hppa/libunwind_i.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
6980fa4f25 Adjust comment. 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
e5944788ad Adjust comment. 
2005/05/19 08:13:00-07:00 hp.com!davidm
Rename: include/x86_64/dwarf-config.h -> include/tdep-x86_64/dwarf-config.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
c446186670 Add include of <stdlib.h>. 
}(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
5135d044ed Add include of <stdlib.h>. 
2005/05/19 07:42:56-07:00 hp.com!davidm
Rename: include/internal.h -> include/libunwind_i.h

(Logical change 1.294)
 2005-05-20 09:48:08 +00:00
hp.com!davidm
c3e9383d30 (struct cursor): Add "ec_loc" member. 
(Logical change 1.293)
 2005-05-17 21:28:19 +00:00
mostang.com!davidm
836ee627e0 Rename: src/dwarf/dwarf-eh.h -> include/dwarf-eh.h 
(Logical change 1.290)
 2005-05-03 09:13:17 +00:00
mostang.com!davidm
06d223e924 Initial revision 2005-05-03 09:13:17 +00:00
mostang.com!davidm
fbab73e7e6 Improve comment. 
(Logical change 1.290)
 2005-05-03 09:13:17 +00:00
mostang.com!davidm
fdb6bee068 Change "ia64_rse" prefix to "rse". 
(Logical change 1.290)
 2005-05-03 09:13:17 +00:00
mostang.com!davidm
27f7d7d720 (unw_tdep_proc_info_t): Drop dwarf_info member. 
(Logical change 1.290)
 2005-05-03 09:13:17 +00:00
mostang.com!davidm
e7fba77e9d (unw_dyn_info_format_t): Remove UNW_INFO_FORMAT_DWARF_FDE. 
(UNW_DYN_DFI_FLAG_FDE_PE_MASK): Remove.
(UNW_DYN_DFI_FLAG_AUGMENTATION_HAS_SIZE): Remove.
(unw_dyn_dwarf_fde_info_t): Remove.
(unw_dyn_info_t): Remove dfi member.

(Logical change 1.290)
 2005-05-03 09:13:17 +00:00
mostang.com!davidm
66ecac1b5f (unw_addr_space): If we have atomic_ops.h, declare cache_generation 
to be of type AO_t.

2004/10/25 17:43:57+02:00 homeip.net!davidm
(DWARF_IS_REG_LOC): Define as 0 for the local-only case.

(Logical change 1.290)
 2005-05-03 09:13:17 +00:00
mostang.com!davidm
adeb9b5984 (struct dwarf_cursor): Add members eh_args and eh_valid_mask so 
we can track writes to exception-handling argument regs.

2004/11/17 02:43:39-08:00 mostang.com!davidm
(dwarf_cie_info_pool): New declaration.
(dwarf_cie_info_t): New type.
(dwarf_state_record): Drop cfa_is_sp member.
(dwarf_extract_proc_info_from_fde): Rename from dwarf_parse_fde.

2004/10/25 17:38:51+02:00 homeip.net!davidm
Fix typo: DW_CFA_CFA_expression -> DW_CFA_expression.

(Logical change 1.290)
 2005-05-03 09:13:17 +00:00