What has changed in GDB?
(Organized release by release)
-*** Changes since GDB 7.5
+*** Changes since GDB 7.6
+
+* New commands:
+maint set|show per-command
+maint set|show per-command space
+maint set|show per-command time
+maint set|show per-command symtab
+ Enable display of per-command gdb resource usage.
+
+* The command 'tsave' can now support new option '-ctf' to save trace
+ buffer in Common Trace Format.
+
+* MI changes
+
+ ** The -trace-save MI command can optionally save trace buffer in Common
+ Trace Format now.
+
+*** Changes in GDB 7.6
+
+* Target record has been renamed to record-full.
+ Record/replay is now enabled with the "record full" command.
+ This also affects settings that are associated with full record/replay
+ that have been moved from "set/show record" to "set/show record full":
+
+set|show record full insn-number-max
+set|show record full stop-at-limit
+set|show record full memory-query
+
+* A new record target "record-btrace" has been added. The new target
+ uses hardware support to record the control-flow of a process. It
+ does not support replaying the execution, but it implements the
+ below new commands for investigating the recorded execution log.
+ This new recording method can be enabled using:
+
+record btrace
+
+ The "record-btrace" target is only available on Intel Atom processors
+ and requires a Linux kernel 2.6.32 or later.
+
+* Two new commands have been added for record/replay to give information
+ about the recorded execution without having to replay the execution.
+ The commands are only supported by "record btrace".
+
+record instruction-history prints the execution history at
+ instruction granularity
+
+record function-call-history prints the execution history at
+ function granularity
+
+* New native configurations
+
+ARM AArch64 GNU/Linux aarch64*-*-linux-gnu
+FreeBSD/powerpc powerpc*-*-freebsd
+
+* New targets
+
+ARM AArch64 aarch64*-*-elf
+ARM AArch64 GNU/Linux aarch64*-*-linux
+Lynx 178 PowerPC powerpc-*-lynx*178
+x86_64/Cygwin x86_64-*-cygwin*
+
+* If the configured location of system.gdbinit file (as given by the
+ --with-system-gdbinit option at configure time) is in the
+ data-directory (as specified by --with-gdb-datadir at configure
+ time) or in one of its subdirectories, then GDB will look for the
+ system-wide init file in the directory specified by the
+ --data-directory command-line option.
* New command line options:
-nh Disables auto-loading of ~/.gdbinit, but still executes all the
other initialization files, unlike -nx which disables all of them.
+* Removed command line options
+
+-epoch This was used by the gdb mode in Epoch, an ancient fork of
+ Emacs.
+
+* The 'ptype' and 'whatis' commands now accept an argument to control
+ type formatting.
+
+* 'info proc' now works on some core files.
+
* Python scripting
** Vectors can be created with gdb.Type.vector.
** Python's atexit.register now works in GDB.
+ ** Types can be pretty-printed via a Python API.
+
+ ** Python 3 is now supported (in addition to Python 2.4 or later)
+
+ ** New class gdb.Architecture exposes GDB's internal representation
+ of architecture in the Python API.
+
+ ** New method Frame.architecture returns the gdb.Architecture object
+ corresponding to the frame's architecture.
+
* New Python-based convenience functions:
** $_memeq(buf1, buf2, length)
* The 'cd' command now defaults to using '~' (the home directory) if not
given an argument.
+* The C++ ABI now defaults to the GNU v3 ABI. This has been the
+ default for GCC since November 2000.
+
* The command 'forward-search' can now be abbreviated as 'fo'.
+* The command 'info tracepoints' can now display 'installed on target'
+ or 'not installed on target' for each non-pending location of tracepoint.
+
* New configure options
--enable-libmcheck/--disable-libmcheck
* New commands (for set/show, see "New options" below)
+catch signal
+ Catch signals. This is similar to "handle", but allows commands and
+ conditions to be attached.
+
maint info bfds
List the BFDs known to GDB.
py [command]
"py" is a new alias for "python".
+enable type-printer [name]...
+disable type-printer [name]...
+ Enable or disable type printers.
+
+set debug notification
+show debug notification
+ Control display of debugging info for async remote notification.
+
+set trace-buffer-size
+show trace-buffer-size
+ Request target to change the size of trace buffer.
+
* Removed commands
** For the Renesas Super-H architecture, the "regs" command has been removed
(has been deprecated in GDB 7.5), and "info all-registers" should be used
instead.
+* New options
+
+set print type methods (on|off)
+show print type methods
+ Control whether method declarations are displayed by "ptype".
+ The default is to show them.
+
+set print type typedefs (on|off)
+show print type typedefs
+ Control whether typedef definitions are displayed by "ptype".
+ The default is to show them.
+
+set filename-display basename|relative|absolute
+show filename-display
+ Control the way in which filenames is displayed.
+ The default is "relative", which preserves previous behavior.
+
* MI changes
** Command parameter changes are now notified using new async record
"=cmd-param-changed".
** Trace frame changes caused by command "tfind" are now notified using
new async record "=traceframe-changed".
- ** The creation and deletion of trace state variables are now notified
- using new async records "=tsv-created" and "=tsv-deleted".
+ ** The creation, deletion and modification of trace state variables
+ are now notified using new async records "=tsv-created",
+ "=tsv-deleted" and "=tsv-modified".
** The start and stop of process record are now notified using new
async record "=record-started" and "=record-stopped".
** Memory changes are now notified using new async record
** The data-disassemble command response will include a "fullname" field
containing the absolute file name when GDB can determine it and source
has been requested.
+ ** New optional parameter COUNT added to the "-data-write-memory-bytes"
+ command, to allow pattern filling of memory areas.
+ ** New commands "-catch-load"/"-catch-unload" added for intercepting
+ library load/unload events.
+ ** The response to breakpoint commands and breakpoint async records
+ includes an "installed" field containing a boolean state about each
+ non-pending tracepoint location is whether installed on target or not.
+ ** Output of the "-trace-status" command includes a "trace-file" field
+ containing the name of the trace file being examined. This field is
+ optional, and only present when examining a trace file.
+
+* GDB now supports the "mini debuginfo" section, .gnu_debugdata.
+ You must have the LZMA library available when configuring GDB for this
+ feature to be enabled. For more information, see:
+ http://fedoraproject.org/wiki/Features/MiniDebugInfo
+
+* New remote packets
+
+QTBuffer:size
+ Set the size of trace buffer. The remote stub reports support for this
+ packet to gdb's qSupported query.
*** Changes in GDB 7.5
projects / deliverable / binutils-gdb.git / blobdiff