ChangeLog.txt

I have stopped updating this file (and the commercial version).
For change history, please see:
http://zerobugs.codeplex.com/SourceControl/list/changesets.


[07/01/08]
- variables are now shown in tooltips when hovering over source code
- begun working on a utility for saving debug into to external database

[06/08/08]
- added missing headers (fixed compilation errors with g++ 4.3.0)
- added autoconfig test for unordered_map

[04/23/08]
- fixed bugs in RPC::RemoteIO, added test-client,
- moved object_factory.h from engine/ to dharma/

[01/23/08]
- Added license management, fixed bugs related to fork w/
multiple threads

[08/17/07]
- Added mutex to Dwarf::get_debug_handle, so only one thread
may operate on a Dwarf::Debug object.
- SymbolTable relatead tweaks, more experimentation with
caching

[07/21/07]
- Support for FPU regs in DWARF expressions on 32-bit systems
- UI fixes, gtk-- 1.2 related
- set "new_program" flag when thread is execv-ed
- made read_register non const, to allow for caching, etc.

[07/19/07]
- Fixed race conditions in symbol_table.cpp
- Fixed potential deadlock in UI
- Do not allow changing the view type for CodeView instances
that do now have a current scope function (symbol) set
- Added support in DebuggerShell for dumping symbol tables
- Revisited support for deferred breakpoints (i.e. insertion of
breakpoints in shared objects that have not yet been loaded) and
cleaned up the design; some small UI improvements entailed
TODO: persist deferred breakpoints
- Experimental feature (useful for own debugging): escape
temporarily from UI mode into text mode command line

[07/04/07]
Handle DW_FRAME_EXPRESSION, stack unwinding now works much better 
on AMD64

[06/27/07]
Do not install breakpoint for TD_DEATH, it seems to crash the main
thread, is this a known glibc bug?

And use SIGKILL rather than PTRACE_KILL to terminate the target,
PTRACE_KILL is flaky.

[06/23/07]
Migrated to SVN

[06/21/07]
Added support for reading symbols and debug info 
from separate file, when .gnu_debuglink is used

Remove threads from internal list upon PTRACE_EVENT_EXIT.

[06/19/07]
Fixed bug with displaying STL containers as arrays when aggregated
as struct/class members.

Added Watch window in bottom tab.
Added copyright note

[06/14/07]
Debugged core file are now properly added to the history.
Removed some compile-time dependencies in the UI.
Sorting in the SymbolTableImpl is now fully multi-threaded

[06/13/07]
Tinkered with ELF error reporting in minielf

[06/11/07]
Fixed unmangler assertion failure
Fixed bug in STAB parser: could not deal with nested structs/classes
Fixed problem with evaluating members of anonymous structs.
Fixed bug in DWARF reader wrt bit-fields
Experimenting with google::dense_hash_map, Hsieh function 

[06/07/07]
Fixed bugs in handling coredumps of 32-bit apps on AMD64
Fixed bugs in returning objects by value in the interpreter, on AMD64

Some small architectural cleanups: renamed the Task interface Runnable
and moved most methods that do not work on corefiles from Thread to Runnable

[05/06/07]
UI Fixes, assembly code is now tabbed nicely
Engine fix for returning from function when the PC is at func prologue
bumped revision to 54
 todo: test cases (would be interesting to play with recursive funcs)

[04/23/07]
Fixed install.py script
Fixed problem with the expression interpreter, which used to throw an
exception when attempting to pass an object by value, and the class did
not have a copy constructor defined.
A couple of things left to do in that area:
  Make it work with small (<= 16 bytes) objects on the x86-64, and
  use a member-wise copy rather than a bit-wise copy

[04/22/07]
Moved the pass_by_arg logic out of the interp library, to the target
directory (since it is architecture-specific)

[04/20/07]
Configure script exits if flex not found
Updated build instructions with libudis86 entry

[04/14/07]
Modified RPM spec file to invoke alien -k, if the alien program
is present

[04/12/07]
Fixed bug in eventlog (hex and dec modifiers applied to incorrect debug
levels)

Fixed the DynamicArray type (parse method used default implementation); to
prevent further errors, DataTypeImpl no longer provides a default
implementation for the parse method.

[04/07/07]
Fixed race condition in UI (related to right-menu)
Fixed DWARF-related BUG (module base was wrapping around)
FIXED UI bug (there was an attempt to update a stacktrace from the UI thread)
Support for D dynamic arrays
FIXED D demangling
New eventlog facility for the main engine and dwarf plugin (soon 
to be added to other modules)

DWARF plugin does not lookup all units in the module when looking
up line info by address (can be forced to do so with ZERO_AGGRESSIVE_LINEINFO,
just in case)

[03/39/07]

 1) fixed a bug in the parsing of STAB debug info (affected gcc 3.3.5 compiled
 code)
 2) fixed a bug in my implementation of ELF
 3) reduced the memory footprint for type information
 4) (internal) cleaned up my autoconfig scripts
 5) evaluation of logical expressions is now short-circuited (to better
 imitate the compiled-code); previously, both left-handside and righthandside
 operands were always being evaluated
 6) and fixed a bug that under certian conditions caused the debugger to hang
 after the debugged program exited successfully

 The stable version of Debian (Sarge) is now supported.


[12/24/06]
-- Fixed __x86_64__ / thread_db-related issue.

[08/24/06]
-- Allow static and implicit conversions from int and double
   to bool in the expression interpreter

[08/23/06]
-- Moved the TypeSystem instance to UnixTarget from under DebuggerEngine,
   this way when a process is forked the type system is not shared
-- Fixed a bug in step_until_current_func_returns dealing with recursive
   functions
-- Added  the E_THREAD_RETURNED event type to indicate that 
step_until_current_func_returns asynchronously completed

-- Fixed SEGV in zero_python error handling,
-- Fixed threading-related bug in the python plugin

-- Fixed bug in x86-64 stack trace unwinding

[08/17/06]
-- Fixed bug that prevented streamable object factories to load
the settings 
-- Updated unit tests

[08/09/06]
-- Fixed a bug that prevented symbol lookups from working correctly
with core files.
-- Experimental Python binding library and plugin

[07/22/06]
-- Fixed bug in reading core files

[07/15/06]
-- Fixed SymKey in GUI to handle objects of zero address.
-- Fixed loop in FwdType (the list of linked types was closing
upon itself).
-- ExceptionHandlingContext should now be thread-safe with respect
to handling user-defined exceptions throw symultaneously on different
threads.
-- Added #pragma GCC visibility to ZDK headers which include <stdexception>

[07/14/06]
-- Stabilized the UI:
	fixed bug with sorting, then editing a CList adapter
	fixed bug in disassembler that threw code viewer off
	fixed bugs in history navigation
-- fixed test for PLT jump on x86_64
-- symbol table calls Events::on_done even when loaded lazily, so that
module breakpoints can be restored
-- fixed ZERO_QUICK_SHUTDOWN
-- Cleaned up command line parsing code
-- NOTE: dropped libunwind experiments, libdwarf works now.

[05/07/06]
-- moved the check for pending system calls from interp/cpu_state_saver.cpp
to the target implementation;
-- fixed bug in the DWARF plug-in which caused local variables to be seen
at the global scope;
-- removed check for function prologue for x86-64 because it is hard to
keep up with compiler changes, it causes more problems than it solves;
as a result, stack unwinding works much better on the x64 now;
-- better implementation for Thread::ret_addr(), which works in the
context of the current stack frame, and does not used platform-dependent
code;
-- added support for passing doubles and floats in functions
(via XMM0-5 regs) for x64

[03/01/06]
-- building the engine as a big shared object (optional)
-- the memory view window accepts expressions

[02/25/06]
-- libelf no longer required, rolled out my minimalistic implementation

[02/05/06]
-- Fixed a bug in the interpreter having to do with combining
macros and function calls
-- Fixed the support for overloaded operator->

[02/02/06]
-- Better layers of abstraction, for ease of porting; moved processor
specific stuff to the target directory
-- support for macros in the expression evaluator/interpreter
-- gtkmm 2.x code uses the source view widget

[11/12/05]
-- Improved the object model, bug fixes
-- Investigating the possibility of porting to FreeBSD 5.3 and up

[10/26/05]
-- Support for exec-ed threads
-- Fixed emulated breakpoint bug (clone was not overriden)

-- Command line arguments are saved in the history. Also added support
for saving a the debugged process' environment in the history. 
When the history entry is executed, the same command line
and environment will be used.

-- More UI porting/adapting from Gtkmm 1.2 to Gtkmm 2.x

-- Command line more compatible with GDB

-- augmented the Process interface
The enum_modules method of Process enumerates just the 
modules in that process, whereas Debugger::enum_modules 
enumerates ALL loaded shared objects.

-- added Debugger::enum_processes(), removed Debugger::command_line()
(it is a method of the Process interface now).

-- added SymbolTable::process()

-- the interpreter in the expression evaluator issues warnings 
when comparing signed to unsigned and for negative shift arguments

-- Started experimental FrameHandler plug-in (using libunwind)

-- Fixed bug that affected the handling of forked threads in 64-bit

[05/18/05]
-- Skip per-thread breakpoints when restoring the state of 
a debugged program from the .zero.config file, since it is hard, 
if not impossible, to match the saved thread task IDs with the 
threads that are currently running.

-- Memory can be scanned for bytes pattern (the functionality is 
NOT available from the GUI, though).

-- FPU registers are now displayed (by default in the GUI, and with 
the undocummented flag "/all" appended to the console-mode 
"show registers" command).

-- Command line arguments following a double-dash ("--") are passed
verbatim to the debugged program.