mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-05 01:09:27 +01:00
115 lines
3.7 KiB
Text
115 lines
3.7 KiB
Text
-*-Mode: outline-*-
|
||
|
||
* News for v0.97:
|
||
|
||
** unw_get_proc_name() may now be called from signal-handler.
|
||
|
||
** The ptrace-helper routines are now declared in libunwind-ptrace.h.
|
||
Applications which use ptrace-based unwinding should include
|
||
<libunwind-ptrace.h> to get the _UPT_*() routines declared.
|
||
|
||
** libunwind has been split into a "local-only" and a "generic" versions.
|
||
The former is optimized for local unwinding (within a process) and
|
||
is called libunwind.so (shared version) or libunwind.a (archive
|
||
version). The generic version is not limited to unwinding within a
|
||
process and is called libunwind-generic.so (shared version)
|
||
libunwind-generic.a (archive version). Similarly, the ptrace()
|
||
support has been separated out into a convenience library called
|
||
libunwind-ptrace.a. For the most part, backwards-compatibility
|
||
is retained. However, when building an application which uses
|
||
libunwind, it may be necessary to change the linker command-line
|
||
as shown in the table below:
|
||
|
||
Application which does: Before v0.97: With v0.97:
|
||
----------------------- ------------- -----------
|
||
local unwinding only: -lunwind -lunwind
|
||
remote unwinding: -lunwind -lunwind-generic
|
||
cross unwinding: -lunwind-PLAT -lunwind-PLAT
|
||
ptrace-based unwinding: -lunwind -lunwind-ptrace -lunwind-generic
|
||
|
||
The motivation for this splitting is to keep libunwind.so as minimal
|
||
as possible. This library will eventually be loaded by most (if not
|
||
all) executables and hence it is important to ensure that it can
|
||
be loaded as quickly as possible.
|
||
|
||
** unw_getcontext() tuned on IA-64.
|
||
|
||
The unw_getcontext() routine used to be provided by (GNU) libc
|
||
(getcontext()). This caused unnecessary overhead (e.g., an
|
||
unnecessary system-call to sigprocmask()). The new
|
||
unw_getcontext() only does the work really needed for libunwind and
|
||
hence performs much better. However, this change implies that
|
||
programs linked against libunwind v0.97 won't be
|
||
backwards-compatible with earlier versions (there would be an
|
||
unresolved symbol for _Uia64_getcontext()).
|
||
|
||
** Fix NaT-bit handling on IA-64.
|
||
|
||
New test-cases have been added to test the handling of the NaT bit
|
||
(and floating-point NaT values) and all discovered/known bugs have
|
||
been fixed.
|
||
|
||
** Initial DWARF-based unwinder for x86.
|
||
|
||
There is a beginning for a DWARF-based unwinder for x86. Work for
|
||
x86-64-support based on this DWARF unwinder is currently underway
|
||
at IBM and it is expected that this support will be merged into the
|
||
official tree soon.
|
||
|
||
|
||
* News for v0.96:
|
||
|
||
** _Unwind_*() routines defined by the C++ ABI are now included in
|
||
libunwind.
|
||
|
||
|
||
* News for v0.95:
|
||
|
||
** Bigger, better, faster, or so the theory goes.
|
||
|
||
|
||
* News for v0.93:
|
||
|
||
** More bug-fixes & improved HP-UX support.
|
||
|
||
|
||
* News for v0.92:
|
||
|
||
** Bug-fix release. IA-64 unwinder can now be built with Intel compiler (ECC).
|
||
|
||
|
||
* News for v0.91:
|
||
|
||
** Lots of documentation updates
|
||
** Some portability fixes.
|
||
|
||
|
||
* News for v0.9:
|
||
|
||
** The libunwind API is mostly feature-complete at this point (hence the
|
||
version jump from v0.2 to v0.9).
|
||
|
||
|
||
* News for v0.2:
|
||
|
||
** Automated configuration/build with autoconf and automake.
|
||
** Added support for building libunwind as a shared library.
|
||
** Added support for remote unwinding.
|
||
** Added support for cross-building.
|
||
** Added two new routines to the API:
|
||
- unw_is_fpreg()
|
||
- unw_get_save_loc()
|
||
** Added multi-architecture supports (lets a single application use
|
||
the unwind libraries for multiple target architectures; this is useful,
|
||
e.g., useful for building a debugger that can support multiple targets
|
||
such as x86, ia64, etc.)
|
||
|
||
|
||
* News for v0.1:
|
||
|
||
** Added support for exception handling.
|
||
|
||
|
||
* News for v0.0:
|
||
|
||
** It's a brand new package.
|