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hp.com!davidmcc5ee592002-04-05 23:37:55 +00001-*-Mode: outline-*-
2
mostang.com!davidm02e99d22004-09-09 13:15:24 +00003* News for v0.98:
4
5** Update libunwind to be compliant with the updated/expanded
6 ia64 unwind specificiation by HJ Lu. This is needed for
7 GCC 3.4 compatibility.
8
9** Initial support for x86-64 has been added courtesy of Max Asbock.
10 Along with this came a bunch of DWARF2 unwinder fixes.
11
12** A new rountine unw_strerror() has been added courtesy of
13 Thomas Hallgren.
14
15** Including <libunwind.h> now defines 4 macros that can be used
16 to determine the version number of libunwind. Specifically,
17 UNW_VERSION_MAJOR, UNW_VERSION_MINOR, UNW_VERSION, and
18 UNW_VERSION_CODE are defined by the header now.
19
20** Bug fixes
21*** Fix a memory-leak in _UPT_get_dyn_info_list_addr() courtesy of Ed Connell.
22*** Fix a crash in libunwind-ptrace courtesy of Mark Young.
23*** Fix a bug in ia64-version of unw_init_remote() which prevented
24 it from working correctly for the local address space. Reported by
25 Troy Heber.
26*** Many other small and not so small fixes.
27
(none)!davidm06825792004-04-23 01:32:43 +000028* News for v0.97:
29
30** unw_get_proc_name() may now be called from signal-handler.
31
32** The ptrace-helper routines are now declared in libunwind-ptrace.h.
33 Applications which use ptrace-based unwinding should include
34 <libunwind-ptrace.h> to get the _UPT_*() routines declared.
35
36** libunwind has been split into a "local-only" and a "generic" versions.
37 The former is optimized for local unwinding (within a process) and
38 is called libunwind.so (shared version) or libunwind.a (archive
39 version). The generic version is not limited to unwinding within a
40 process and is called libunwind-generic.so (shared version)
41 libunwind-generic.a (archive version). Similarly, the ptrace()
42 support has been separated out into a convenience library called
43 libunwind-ptrace.a. For the most part, backwards-compatibility
44 is retained. However, when building an application which uses
45 libunwind, it may be necessary to change the linker command-line
46 as shown in the table below:
47
48 Application which does: Before v0.97: With v0.97:
49 ----------------------- ------------- -----------
50 local unwinding only: -lunwind -lunwind
51 remote unwinding: -lunwind -lunwind-generic
52 cross unwinding: -lunwind-PLAT -lunwind-PLAT
53 ptrace-based unwinding: -lunwind -lunwind-ptrace -lunwind-generic
54
55 The motivation for this splitting is to keep libunwind.so as minimal
56 as possible. This library will eventually be loaded by most (if not
57 all) executables and hence it is important to ensure that it can
58 be loaded as quickly as possible.
59
60** unw_getcontext() tuned on IA-64.
61
62 The unw_getcontext() routine used to be provided by (GNU) libc
63 (getcontext()). This caused unnecessary overhead (e.g., an
64 unnecessary system-call to sigprocmask()). The new
65 unw_getcontext() only does the work really needed for libunwind and
66 hence performs much better. However, this change implies that
67 programs linked against libunwind v0.97 won't be
68 backwards-compatible with earlier versions (there would be an
69 unresolved symbol for _Uia64_getcontext()).
70
71** Fix NaT-bit handling on IA-64.
72
73 New test-cases have been added to test the handling of the NaT bit
74 (and floating-point NaT values) and all discovered/known bugs have
75 been fixed.
76
77** Initial DWARF-based unwinder for x86.
78
79 There is a beginning for a DWARF-based unwinder for x86. Work for
80 x86-64-support based on this DWARF unwinder is currently underway
81 at IBM and it is expected that this support will be merged into the
82 official tree soon.
83
84
85* News for v0.96:
86
87** _Unwind_*() routines defined by the C++ ABI are now included in
88 libunwind.
89
90
91* News for v0.95:
92
93** Bigger, better, faster, or so the theory goes.
94
95
96* News for v0.93:
97
98** More bug-fixes & improved HP-UX support.
99
100
101* News for v0.92:
102
103** Bug-fix release. IA-64 unwinder can now be built with Intel compiler (ECC).
104
105
106* News for v0.91:
107
108** Lots of documentation updates
109** Some portability fixes.
110
111
112* News for v0.9:
113
114** The libunwind API is mostly feature-complete at this point (hence the
115 version jump from v0.2 to v0.9).
116
117
hp.com!davidmcc5ee592002-04-05 23:37:55 +0000118* News for v0.2:
119
120** Automated configuration/build with autoconf and automake.
121** Added support for building libunwind as a shared library.
122** Added support for remote unwinding.
123** Added support for cross-building.
124** Added two new routines to the API:
125 - unw_is_fpreg()
126 - unw_get_save_loc()
127** Added multi-architecture supports (lets a single application use
128 the unwind libraries for multiple target architectures; this is useful,
129 e.g., useful for building a debugger that can support multiple targets
mostang.com!davidm3604b052002-12-19 07:16:50 +0000130 such as x86, ia64, etc.)
hp.com!davidmcc5ee592002-04-05 23:37:55 +0000131
132
133* News for v0.1:
134
135** Added support for exception handling.
136
137
138* News for v0.0:
139
140** It's a brand new package.