What has changed in GDB?
(Organized release by release)
-*** Changes since GDB 7.5
+*** Changes since GDB 7.6
+
+* Python scripting
+
+ ** Frame filters and frame decorators have been added.
+
+* New targets
+
+Nios II ELF nios2*-*-elf
+Nios II GNU/Linux nios2*-*-linux
+
+* New commands:
+catch rethrow
+ Like "catch throw", but catches a re-thrown exception.
+maint check-psymtabs
+ Renamed from old "maint check-symtabs".
+maint check-symtabs
+ Perform consistency checks on symtabs.
+maint expand-symtabs
+ Expand symtabs matching an optional regexp.
+
+show configuration
+ Display the details of GDB configure-time options.
+
+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.
+
+* New options
+
+set remote trace-status-packet
+show remote trace-status-packet
+ Set/show the use of remote protocol qTStatus packet.
+
+set debug nios2
+show debug nios2
+ Control display of debugging messages related to Nios II targets.
+
+set range-stepping
+show range-stepping
+ Control whether target-assisted range stepping is enabled.
+
+* You can now use a literal value 'unlimited' for options that
+ interpret 0 or -1 as meaning "unlimited". E.g., "set
+ trace-buffer-size unlimited" is now an alias for "set
+ trace-buffer-size -1" and "set height unlimited" is now an alias for
+ "set height 0".
+
+* New command-line options
+--configuration
+ Display the details of GDB configure-time options.
+
+* The command 'tsave' can now support new option '-ctf' to save trace
+ buffer in Common Trace Format.
+
+* Newly installed $prefix/bin/gcore acts as a shell interface for the
+ GDB command gcore.
+
+* GDB now implements the the C++ 'typeid' operator.
+
+* The new convenience variable $_exception holds the exception being
+ thrown or caught at an exception-related catchpoint.
+
+* The exception-related catchpoints, like "catch throw", now accept a
+ regular expression which can be used to filter exceptions by type.
+
+* MI changes
+
+ ** The -trace-save MI command can optionally save trace buffer in Common
+ Trace Format now.
+
+ ** The new command -dprintf-insert sets a dynamic printf breakpoint.
+
+* New system-wide configuration scripts
+ A GDB installation now provides scripts suitable for use as system-wide
+ configuration scripts for the following systems:
+ ** ElinOS
+ ** Wind River Linux
+
+* GDB now supports target-assigned range stepping with remote targets.
+ This improves the performance of stepping source lines by reducing
+ the number of control packets from/to GDB. See "New remote packets"
+ below.
+
+* New remote packets
+
+vCont;r
+
+ The vCont packet supports a new 'r' action, that tells the remote
+ stub to step through an address range itself, without GDB
+ involvemement at each single-step.
+
+qXfer:libraries-svr4:read's annex
+ The previously unused annex of the qXfer:libraries-svr4:read packet
+ is now used to support passing an argument list. The remote stub
+ reports support for this argument list to GDB's qSupported query.
+ The defined arguments are "start" and "prev", used to reduce work
+ necessary for library list updating, resulting in significant
+ speedup.
+
+* New features in the GDB remote stub, GDBserver
+
+ ** GDBserver now supports target-assisted range stepping. Currently
+ enabled on x86/x86_64 GNU/Linux targets.
+
+*** 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
+x86_64/Cygwin x86_64-*-cygwin*
+Tilera TILE-Gx GNU/Linux tilegx*-*-linux-gnu
* New targets
ARM AArch64 GNU/Linux aarch64*-*-linux
Lynx 178 PowerPC powerpc-*-lynx*178
x86_64/Cygwin x86_64-*-cygwin*
+Tilera TILE-Gx GNU/Linux tilegx*-*-linux
* If the configured location of system.gdbinit file (as given by the
--with-system-gdbinit option at configure time) is in the
Release versions, on the other hand, are built without -lmcheck
by default. The --enable-libmcheck/--disable-libmcheck configure
options allow the user to override that default.
+--with-babeltrace/--with-babeltrace-include/--with-babeltrace-lib
+ This configure option allows the user to build GDB with
+ libbabeltrace using which GDB can read Common Trace Format data.
* New commands (for set/show, see "New options" below)
disable type-printer [name]...
Enable or disable type printers.
-set debug notification
-show debug notification
- Control display of debugging info for async remote notification.
-
* Removed commands
** For the Renesas Super-H architecture, the "regs" command has been removed
Control the way in which filenames is displayed.
The default is "relative", which preserves previous behavior.
+set trace-buffer-size
+show trace-buffer-size
+ Request target to change the size of trace buffer.
+
+set remote trace-buffer-size-packet auto|on|off
+show remote trace-buffer-size-packet
+ Control the use of the remote protocol `QTBuffer:size' packet.
+
+set debug aarch64
+show debug aarch64
+ Control display of debugging messages related to ARM AArch64.
+ The default is off.
+
+set debug coff-pe-read
+show debug coff-pe-read
+ Control display of debugging messages related to reading of COFF/PE
+ exported symbols.
+
+set debug mach-o
+show debug mach-o
+ Control display of debugging messages related to Mach-O symbols
+ processing.
+
+set debug notification
+show debug notification
+ Control display of debugging info for async remote notification.
+
* MI changes
** Command parameter changes are now notified using new async record
** Memory changes are now notified using new async record
"=memory-changed".
** 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.
+ containing the absolute file name when 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
** 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.
+ ** The "fullname" field is now always present along with the "file" field,
+ even if the file cannot be found by GDB.
* 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.
+
+Qbtrace:bts
+ Enable Branch Trace Store (BTS)-based branch tracing for the current
+ thread. The remote stub reports support for this packet to gdb's
+ qSupported query.
+
+Qbtrace:off
+ Disable branch tracing for the current thread. The remote stub reports
+ support for this packet to gdb's qSupported query.
+
+qXfer:btrace:read
+ Read the traced branches for the current thread. The remote stub
+ reports support for this packet to gdb's qSupported query.
+
*** Changes in GDB 7.5
* GDB now supports x32 ABI. Visit <http://sites.google.com/site/x32abi/>
projects / deliverable / binutils-gdb.git / blobdiff