*** Changes since GDB 7.6
+* GDB now supports Fission DWP file format version 2.
+ http://gcc.gnu.org/wiki/DebugFission
+
+* New convenience function "$_isvoid", to check whether an expression
+ is void. A void expression is an expression where the type of the
+ result is "void". For example, some convenience variables may be
+ "void" when evaluated (e.g., "$_exitcode" before the execution of
+ the program being debugged; or an undefined convenience variable).
+ Another example, when calling a function whose return type is
+ "void".
+
+* The "maintenance print objfiles" command now takes an optional regexp.
+
+* The "catch syscall" command now works on arm*-linux* targets.
+
+* GDB now consistently shows "<not saved>" when printing values of
+ registers the debug info indicates have not been saved in the frame
+ and there's nowhere to retrieve them from
+ (callee-saved/call-clobbered registers):
+
+ (gdb) p $rax
+ $1 = <not saved>
+
+ (gdb) info registers rax
+ rax <not saved>
+
+ Before, the former would print "<optimized out>", and the latter
+ "*value not available*".
+
* Python scripting
** Frame filters and frame decorators have been added.
Nios II ELF nios2*-*-elf
Nios II GNU/Linux nios2*-*-linux
+Texas Instruments MSP430 msp430*-*-elf
+
+* Removed native configurations
+
+Support for these a.out NetBSD and OpenBSD obsolete configurations has
+been removed. ELF variants of these configurations are kept supported.
+
+arm*-*-netbsd* but arm*-*-netbsdelf* is kept supported.
+i[34567]86-*-netbsd* but i[34567]86-*-netbsdelf* is kept supported.
+i[34567]86-*-openbsd[0-2].* but i[34567]86-*-openbsd* is kept supported.
+i[34567]86-*-openbsd3.[0-3]
+m68*-*-netbsd* but m68*-*-netbsdelf* is kept supported.
+sparc-*-netbsd* but sparc-*-netbsdelf* is kept supported.
+vax-*-netbsd* but vax-*-netbsdelf* is kept supported.
* New commands:
catch rethrow
* New options
+set debug symfile off|on
+show debug symfile
+ Control display of debugging info regarding reading symbol files and
+ symbol tables within those files
+
+set print raw frame-arguments
+show print raw frame-arguments
+ Set/show whether to print frame arguments in raw mode,
+ disregarding any defined pretty-printers.
+
set remote trace-status-packet
show remote trace-status-packet
Set/show the use of remote protocol qTStatus packet.
* The exception-related catchpoints, like "catch throw", now accept a
regular expression which can be used to filter exceptions by type.
+* The new convenience variable $_exitsignal is automatically set to
+ the terminating signal number when the program being debugged dies
+ due to an uncaught signal.
+
* MI changes
** The -trace-save MI command can optionally save trace buffer in Common
** The new command -dprintf-insert sets a dynamic printf breakpoint.
+ ** The command -data-list-register-values now accepts an optional
+ "--skip-unavailable" option. When used, only the available registers
+ are displayed.
+
+ ** The new command -trace-frame-collected dumps collected variables,
+ computed expressions, tvars, memory and registers in a traceframe.
+
+ ** The commands -stack-list-locals, -stack-list-arguments and
+ -stack-list-variables now accept an option "--skip-unavailable".
+ When used, only the available locals or arguments are displayed.
+
+ ** The -exec-run command now accepts an optional "--start" option.
+ When used, the command follows the same semantics as the "start"
+ command, stopping the program's execution at the start of its
+ main subprogram.
+
* New system-wide configuration scripts
A GDB installation now provides scripts suitable for use as system-wide
configuration scripts for the following systems:
the number of control packets from/to GDB. See "New remote packets"
below.
+* GDB now understands the element 'tvar' in the XML traceframe info.
+ It has the id of the collected trace state variables.
+
+* On S/390 targets that provide the transactional-execution feature,
+ the program interruption transaction diagnostic block (TDB) is now
+ represented as a number of additional "registers" in GDB.
+
* New remote packets
vCont;r
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.
+
+ ** GDBserver now adds element 'tvar' in the XML in the reply to
+ 'qXfer:traceframe-info:read'. It has the id of the collected
+ trace state variables.
+
+ ** GDBserver now supports hardware watchpoints on the MIPS GNU/Linux
+ target.
+
+* New 'z' formatter for printing and examining memory, this displays the
+ value as hexadecimal zero padded on the left to the size of the type.
+
+* GDB can now use Windows x64 unwinding data.
+
+* The "set remotebaud" command has been replaced by "set serial baud".
+ Similarly, "show remotebaud" has been replaced by "show serial baud".
+ The "set remotebaud" and "show remotebaud" commands are still available
+ to provide backward compatibility with older versions of GDB.
+
*** Changes in GDB 7.6
* Target record has been renamed to record-full.
projects / deliverable / binutils-gdb.git / blobdiff