What has changed in GDB?
(Organized release by release)
-*** Changes since GDB 7.9
+*** Changes since GDB 7.10
+
+* Support for tracepoints on aarch64-linux was added in GDBserver.
+
+* The 'record instruction-history' command now indicates speculative execution
+ when using the Intel(R) Processor Trace recording format.
+
+* GDB now allows users to specify explicit locations, bypassing
+ the linespec parser. This feature is also available to GDB/MI
+ clients.
+
+* Multi-architecture debugging is supported on AArch64 GNU/Linux.
+ GDB now is able to debug both AArch64 applications and ARM applications
+ at the same time.
+
+* New commands
+
+maint set target-non-stop (on|off|auto)
+maint show target-non-stop
+ Control whether GDB targets always operate in non-stop mode even if
+ "set non-stop" is "off". The default is "auto", meaning non-stop
+ mode is enabled if supported by the target.
+
+maint set bfd-sharing
+maint show bfd-sharing
+ Control the reuse of bfd objects.
+
+set debug bfd-cache
+show debug bfd-cache
+ Control display of debugging info regarding bfd caching.
+
+set remote multiprocess-extensions-packet
+show remote multiprocess-extensions-packet
+ Set/show the use of the remote protocol multiprocess extensions.
+
+* The "disassemble" command accepts a new modifier: /s.
+ It prints mixed source+disassembly like /m with two differences:
+ - disassembled instructions are now printed in program order, and
+ - and source for all relevant files is now printed.
+ The "/m" option is now considered deprecated: its "source-centric"
+ output hasn't proved useful in practice.
+
+* Support for various ROM monitors has been removed:
+
+ target dbug dBUG ROM monitor for Motorola ColdFire
+ target picobug Motorola picobug monitor
+ target dink32 DINK32 ROM monitor for PowerPC
+ target m32r Renesas M32R/D ROM monitor
+ target mon2000 mon2000 ROM monitor
+ target ppcbug PPCBUG ROM monitor for PowerPC
+
+* Support for reading/writing memory and extracting values on architectures
+ whose memory is addressable in units of any integral multiple of 8 bits.
+
+* New remote packets
+
+exec stop reason
+ Indicates that an exec system call was executed.
+
+exec-events feature in qSupported
+ The qSupported packet allows GDB to request support for exec
+ events using the new 'gdbfeature' exec-event, and the qSupported
+ response can contain the corresponding 'stubfeature'. Set and
+ show commands can be used to display whether these features are enabled.
+
+* Extended-remote exec events
+
+ ** GDB now has support for exec events on extended-remote Linux targets.
+ For such targets with Linux kernels 2.5.46 and later, this enables
+ follow-exec-mode and exec catchpoints.
+
+set remote exec-event-feature-packet
+show remote exec-event-feature-packet
+ Set/show the use of the remote exec event feature.
+
+*** Changes in GDB 7.10
* Support for process record-replay and reverse debugging on aarch64*-linux*
targets has been added. GDB now supports recording of A64 instruction set
record pt
Start branch trace recording using Intel(R) Processor Trace format.
+maint info btrace
+ Print information about branch tracing internals.
+
+maint btrace packet-history
+ Print the raw branch tracing data.
+
+maint btrace clear-packet-history
+ Discard the stored raw branch tracing data.
+
+maint btrace clear
+ Discard all branch tracing data. It will be fetched and processed
+ anew by the next "record" command.
+
* New options
set debug dwarf-die
The obtained size may differ from the requested size. Use "info
record" to see the obtained buffer size.
+maint set|show btrace pt skip-pad
+ Set and show whether PAD packets are skipped when computing the
+ packet history.
+
* The command 'thread apply all' can now support new option '-ascending'
to call its specified command for all threads in ascending order.