5 ** coredump unwind support
7 ** Improved support for PowerPC, ARM
8 ** Lots of cleanups, perf tweaks
13 ** Fast unwind (rbp, rsp, rip only) on x86_64 with a fallback to
14 slow code path (Lassi Tuura)
15 ** Improved local and remote unwinding on ARM (Ken Werner)
16 ** Testing, stability and many fixes on x86 (Paul Pluzhnikov)
17 ** FreeBSD port and clean separation of OS specific bits
19 ** Thanks for all the bug reports, contributions and testing!
23 ** Greatly improved x86-64 support thanks to Arun Sharma.
24 ** Support for PPC64 added by Jose Flavio Aguilar Paulino.
28 ** Fix address-leak triggered by invalid byte-order. Fixed by Andreas Schwab.
29 ** On ia64, get_static_proc_name() no longer uses a weak reference to
30 _Uelf64_get_proc_name(), since that was causing problems with archive
31 libraries and no longer served any apparent purpose. Fixed by
36 ** Fix a typo in the man-page of unw_create_addr_space().
37 ** Fix an off-by-1 bug in the handling of the dynamic ALIAS directive
38 for ia64. Reported by Todd L. Miller.
39 ** Fix a bug in libunwind-ptrace which could cause crash due to extraneous
44 ** Fix a typo in _ReadSLEB.c which caused hangs when throwing exceptions
45 from Intel ICC-compiled programs. Reported by Tommy Hoffner.
49 ** Make it possible to link against libunwind-ia64.a only (i.e., without
50 requiring libunwind.a as well). This keeps apps which need only
51 remote unwinding cleaner, since they logically have no dependency
53 ** Dont link against libatomic_ops for now. Due to a packaging bug on
54 Debian, linking against this library causes libunwind.so to get
55 a dependency on libatomic_ops.so, which is not at all what we want.
56 Fortunately, we don't have to link against that library on x86 or
57 ia64 since the library is strictly needed only for platforms with
58 poor atomic operation support. Once the libatomic_ops package is fixed,
59 we can re-enable linking against libatomic_ops.
63 ** Fixed bug which caused _UPT_get_dyn_info_list_addr() to sometimes fail
64 needlessly. Found by Todd L. Miller.
66 ** When using GCC to build libunwind on ia64, libunwind.so had an
67 unresolved reference to __divdi3. This is undesirable since it
68 creates an implicit dependency on libgcc. This problem has been
69 fixed in the 0.98.2 release by explicitly linking against libgcc.a
70 when building libunwind.
74 ** Fixed a bug which caused "make install" to install libunwind-common.h.in
75 instead of libunwind-common.h.
76 ** Fixed a bug in the ia64 {sig,}longjmp() which showed on
77 SuSE Linux 9 because it's using a newer compiler & the EPC-based system
79 ** Fixed incorrect offsets in tests/ia64-test-nat-asm.S.
80 Warning: you'll need a GNU assembler dated later than 21-Sep-2004 to
81 get this file translated correctly. With an old assembler, "make check"
82 will get lots of failures when running Gia64-test-nat or Lia64-test-nat!
83 ** Convert tests/bt into a full-blown test-case. It's designed to
84 trigger a (rarely-encountered) bug in the GNU assembler on ia64.
85 The assembler has been fixed and once the libraries (libc etc)
86 have been rebuilt, this test will pass.
87 ** Added test-case tests/run-ptrace-misc which, on ia64, triggers a bug in
88 current GCC (including v3.4.2) which causes bad unwind info.
92 ** Update libunwind to be compliant with the updated/expanded
93 ia64 unwind specificiation by HJ Lu [1]. This is needed for
94 GCC 3.4 compatibility.
96 [1] http://www.kernel.org/pub/linux/devel/gcc/unwind/
98 ** Initial support for x86-64 has been added courtesy of Max Asbock.
99 Along with this came a bunch of DWARF2 unwinder fixes.
101 ** A new rountine unw_strerror() has been added courtesy of
104 ** Including <libunwind.h> now defines 4 macros that can be used
105 to determine the version number of libunwind. Specifically,
106 UNW_VERSION_MAJOR, UNW_VERSION_MINOR, UNW_VERSION, and
107 UNW_VERSION_CODE are defined by the header now.
110 *** Fix a memory-leak in _UPT_get_dyn_info_list_addr() courtesy of Ed Connell.
111 *** Fix a crash in libunwind-ptrace courtesy of Mark Young.
112 *** Fix a bug in ia64-version of unw_init_remote() which prevented
113 it from working correctly for the local address space. Reported by
115 *** Many other small and not so small fixes.
119 ** unw_get_proc_name() may now be called from signal-handler.
121 ** The ptrace-helper routines are now declared in libunwind-ptrace.h.
122 Applications which use ptrace-based unwinding should include
123 <libunwind-ptrace.h> to get the _UPT_*() routines declared.
125 ** libunwind has been split into a "local-only" and a "generic" versions.
126 The former is optimized for local unwinding (within a process) and
127 is called libunwind.so (shared version) or libunwind.a (archive
128 version). The generic version is not limited to unwinding within a
129 process and is called libunwind-generic.so (shared version)
130 libunwind-generic.a (archive version). Similarly, the ptrace()
131 support has been separated out into a convenience library called
132 libunwind-ptrace.a. For the most part, backwards-compatibility
133 is retained. However, when building an application which uses
134 libunwind, it may be necessary to change the linker command-line
135 as shown in the table below:
137 Application which does: Before v0.97: With v0.97:
138 ----------------------- ------------- -----------
139 local unwinding only: -lunwind -lunwind
140 remote unwinding: -lunwind -lunwind-generic
141 cross unwinding: -lunwind-PLAT -lunwind-PLAT
142 ptrace-based unwinding: -lunwind -lunwind-ptrace -lunwind-generic
144 The motivation for this splitting is to keep libunwind.so as minimal
145 as possible. This library will eventually be loaded by most (if not
146 all) executables and hence it is important to ensure that it can
147 be loaded as quickly as possible.
149 ** unw_getcontext() tuned on IA-64.
151 The unw_getcontext() routine used to be provided by (GNU) libc
152 (getcontext()). This caused unnecessary overhead (e.g., an
153 unnecessary system-call to sigprocmask()). The new
154 unw_getcontext() only does the work really needed for libunwind and
155 hence performs much better. However, this change implies that
156 programs linked against libunwind v0.97 won't be
157 backwards-compatible with earlier versions (there would be an
158 unresolved symbol for _Uia64_getcontext()).
160 ** Fix NaT-bit handling on IA-64.
162 New test-cases have been added to test the handling of the NaT bit
163 (and floating-point NaT values) and all discovered/known bugs have
166 ** Initial DWARF-based unwinder for x86.
168 There is a beginning for a DWARF-based unwinder for x86. Work for
169 x86-64-support based on this DWARF unwinder is currently underway
170 at IBM and it is expected that this support will be merged into the
176 ** _Unwind_*() routines defined by the C++ ABI are now included in
182 ** Bigger, better, faster, or so the theory goes.
187 ** More bug-fixes & improved HP-UX support.
192 ** Bug-fix release. IA-64 unwinder can now be built with Intel compiler (ECC).
197 ** Lots of documentation updates
198 ** Some portability fixes.
203 ** The libunwind API is mostly feature-complete at this point (hence the
204 version jump from v0.2 to v0.9).
209 ** Automated configuration/build with autoconf and automake.
210 ** Added support for building libunwind as a shared library.
211 ** Added support for remote unwinding.
212 ** Added support for cross-building.
213 ** Added two new routines to the API:
216 ** Added multi-architecture supports (lets a single application use
217 the unwind libraries for multiple target architectures; this is useful,
218 e.g., useful for building a debugger that can support multiple targets
219 such as x86, ia64, etc.)
224 ** Added support for exception handling.
229 ** It's a brand new package.