PR ld/13066

[deliverable/binutils-gdb.git] / gdb / NEWS

diff --git a/gdb/NEWS b/gdb/NEWS
index 96b6f05b6fe1254cf31df032b0419a7f6732559c..b0da564c36bde288a7d8c1887275bcdeb097867c 100644 (file)
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -1,7 +1,102 @@
                What has changed in GDB?
             (Organized release by release)
 
                What has changed in GDB?
             (Organized release by release)
 

-*** Changes since GDB 7.2
+*** Changes since GDB 7.3
+
+* GDB has two new commands: "set remote hardware-watchpoint-length-limit"
+  and "show remote hardware-watchpoint-length-limit".  These allows to
+  set or show the maximum length limit (in bytes) of a remote
+  target hardware watchpoint.
+
+  This allows e.g. to use "unlimited" hardware watchpoints with the
+  gdbserver integrated in Valgrind version >= 3.7.0.  Such Valgrind
+  watchpoints are slower than real hardware watchpoints but are
+  significantly faster than gdb software watchpoints.
+
+* Python scripting
+
+  ** The "maint set python print-stack on|off" command has been
+     deprecated, and a new command: "set python print-stack on|off" has
+     replaced it.  Additionally, the default for "print-stack" is now
+     "off".
+   
+  ** A prompt subsitution hook (prompt_hook) is now available to the
+     Python API.
+
+* libthread-db-search-path now supports two special values: $sdir and $pdir.
+  $sdir specifies the default system locations of shared libraries.
+  $pdir specifies the directory where the libpthread used by the application
+  lives.
+
+  GDB no longer looks in $sdir and $pdir after it has searched the directories
+  mentioned in libthread-db-search-path.  If you want to search those
+  directories, they must be specified in libthread-db-search-path.
+  The default value of libthread-db-search-path on GNU/Linux and Solaris
+  systems is now "$sdir:$pdir".
+
+  $pdir is not supported by gdbserver, it is currently ignored.
+  $sdir is supported by gdbserver.
+
+* New configure option --with-iconv-bin.
+  When using the internationalization support like the one in the GNU C
+  library, GDB will invoke the "iconv" program to get a list of supported
+  character sets.  If this program lives in a non-standard location, one can
+  use this option to specify where to find it.
+
+* When natively debugging programs on PowerPC BookE processors running
+  a Linux kernel version 2.6.34 or later, GDB supports masked hardware
+  watchpoints, which specify a mask in addition to an address to watch.
+  The mask specifies that some bits of an address (the bits which are
+  reset in the mask) should be ignored when matching the address accessed
+  by the inferior against the watchpoint address.  See the "PowerPC Embedded"
+  section in the user manual for more details.
+
+* The new option --once causes GDBserver to stop listening for connections once
+  the first connection is made.  The listening port used by GDBserver will
+  become available after that.
+
+* New commands "info macros", and "info definitions" have been added.
+
+* Changed commands
+
+watch EXPRESSION mask MASK_VALUE
+  The watch command now supports the mask argument which allows creation
+  of masked watchpoints, if the current architecture supports this feature.
+
+info auto-load-scripts [REGEXP]
+  This command was formerly named "maintenance print section-scripts".
+  It is now generally useful and is no longer a maintenance-only command.
+
+* Tracepoints can now be enabled and disabled at any time after a trace
+  experiment has been started using the standard "enable" and "disable"
+  commands.  It is now possible to start a trace experiment with no enabled
+  tracepoints; GDB will display a warning, but will allow the experiment to
+  begin, assuming that tracepoints will be enabled as needed while the trace
+  is running.
+
+* New remote packets
+
+QTEnable
+  
+  Dynamically enable a tracepoint in a started trace experiment.
+
+QTDisable
+
+  Dynamically disable a tracepoint in a started trace experiment.
+
+* Dcache size (number of lines) and line-size are now runtime-configurable
+  via "set dcache line" and "set dcache line-size" commands.
+
+*** Changes in GDB 7.3
+
+* GDB has a new command: "thread find [REGEXP]".
+  It finds the thread id whose name, target id, or thread extra info
+  matches the given regular expression.
+
+* The "catch syscall" command now works on mips*-linux* targets.
+
+* The -data-disassemble MI command now supports modes 2 and 3 for
+  dumping the instruction opcodes.

 
 * New command line options
 
 
 * New command line options
 


@@ -15,12 +110,39 @@
   It is like the "dir" command except that it replaces the
   source path list instead of augmenting it.
 
   It is like the "dir" command except that it replaces the
   source path list instead of augmenting it.
 

+* GDB now understands thread names.
+
+  On GNU/Linux, "info threads" will display the thread name as set by
+  prctl or pthread_setname_np.
+
+  There is also a new command, "thread name", which can be used to
+  assign a name internally for GDB to display.
+

 * OpenCL C
   Initial support for the OpenCL C language (http://www.khronos.org/opencl)
   has been integrated into GDB.
 
 * Python scripting
 
 * OpenCL C
   Initial support for the OpenCL C language (http://www.khronos.org/opencl)
   has been integrated into GDB.
 
 * Python scripting
 

+  ** The function gdb.Write now accepts an optional keyword 'stream'.
+     This keyword, when provided, will direct the output to either
+     stdout, stderr, or GDB's logging output.
+
+  ** Parameters can now be be sub-classed in Python, and in particular
+     you may implement the get_set_doc and get_show_doc functions.
+     This improves how Parameter set/show documentation is processed
+     and allows for more dynamic content.
+
+  ** Symbols, Symbol Table, Symbol Table and Line, Object Files,
+     Inferior, Inferior Thread, Blocks, and Block Iterator APIs now
+     have an is_valid method.
+
+  ** Breakpoints can now be sub-classed in Python, and in particular
+     you may implement a 'stop' function that is executed each time
+     the inferior reaches that breakpoint.   
+
+  ** New function gdb.lookup_global_symbol looks up a global symbol.
+

   ** GDB values in Python are now callable if the value represents a
      function.  For example, if 'some_value' represents a function that
      takes two integer parameters and returns a value, you can call
   ** GDB values in Python are now callable if the value represents a
      function.  For example, if 'some_value' represents a function that
      takes two integer parameters and returns a value, you can call


@@ -43,6 +165,20 @@
 
   ** gdb.parameter("directories") is now available.
 
 
   ** gdb.parameter("directories") is now available.
 

+  ** New function gdb.newest_frame returns the newest frame in the
+     selected thread.
+
+  ** The gdb.InferiorThread class has a new "name" attribute.  This
+     holds the thread's name.
+
+  ** Python Support for Inferior events.
+     Python scripts can add observers to be notified of events
+     occurring in the process being debugged.
+     The following events are currently supported:
+     - gdb.events.cont Continue event.
+     - gdb.events.exited Inferior exited event.
+     - gdb.events.stop Signal received, and Breakpoint hit events.
+

 * C++ Improvements:
 
   ** GDB now puts template parameters in scope when debugging in an
 * C++ Improvements:
 
   ** GDB now puts template parameters in scope when debugging in an


@@ -106,11 +242,23 @@
   libthread_db library with the "set libthread-db-search-path"
   command.  See the user manual for more details on this command.
 
   libthread_db library with the "set libthread-db-search-path"
   command.  See the user manual for more details on this command.
 

+* When natively debugging programs on PowerPC BookE processors running
+  a Linux kernel version 2.6.34 or later, GDB supports ranged breakpoints,
+  which stop execution of the inferior whenever it executes an instruction
+  at any address within the specified range.  See the "PowerPC Embedded"
+  section in the user manual for more details.
+

 * New features in the GDB remote stub, GDBserver
 
   ** GDBserver is now supported on PowerPC LynxOS (versions 4.x and 5.x),
      and i686 LynxOS (version 5.x).
 
 * New features in the GDB remote stub, GDBserver
 
   ** GDBserver is now supported on PowerPC LynxOS (versions 4.x and 5.x),
      and i686 LynxOS (version 5.x).
 

+  ** GDBserver is now supported on Blackfin Linux.
+
+* New native configurations
+
+ia64 HP-UX                      ia64-*-hpux*
+

 * New targets:
 
 Analog Devices, Inc. Blackfin Processor        bfin-*
 * New targets:
 
 Analog Devices, Inc. Blackfin Processor        bfin-*


@@ -126,6 +274,8 @@ Analog Devices, Inc. Blackfin Processor     bfin-*
 
   ** The --map-info flag lists all known core mappings.
 
 
   ** The --map-info flag lists all known core mappings.
 

+  ** CFI flashes may be simulated via the "cfi" device.
+

 *** Changes in GDB 7.2
 
 * Shared library support for remote targets by default
 *** Changes in GDB 7.2
 
 * Shared library support for remote targets by default