+*** Changes since GDB 7.8
+
+* GDB now supports hardware watchpoints on x86 GNU Hurd.
+
+* Python Scripting
+
+ ** You can now access frame registers from Python scripts.
+ ** New attribute 'producer' for gdb.Symtab objects.
+
+* New Python-based convenience functions:
+
+ ** $_caller_is(name [, number_of_frames])
+ ** $_caller_matches(regexp [, number_of_frames])
+ ** $_any_caller_is(name [, number_of_frames])
+ ** $_any_caller_matches(regexp [, number_of_frames])
+
+* New commands
+
+queue-signal signal-name-or-number
+ Queue a signal to be delivered to the thread when it is resumed.
+
+* On resume, GDB now always passes the signal the program had stopped
+ for to the thread the signal was sent to, even if the user changed
+ threads before resuming. Previously GDB would often (but not
+ always) deliver the signal to the thread that happens to be current
+ at resume time.
+
+* Conversely, the "signal" command now consistently delivers the
+ requested signal to the current thread. GDB now asks for
+ confirmation if the program had stopped for a signal and the user
+ switched threads meanwhile.
+
+* "breakpoint always-inserted" modes "off" and "auto" merged.
+
+ Now, when 'breakpoint always-inserted mode' is set to "off", GDB
+ won't remove breakpoints from the target until all threads stop,
+ even in non-stop mode. The "auto" mode has been removed, and "off"
+ is now the default mode.
+
+* MI changes
+
+ ** The -list-thread-groups command outputs an exit-code field for
+ inferiors that have exited.
+
+* Removed targets
+
+Support for these obsolete configurations has been removed.
+
+mips-sgi-irix5*
+mips-sgi-irix6*
+
+*** Changes in GDB 7.8
+
+* New command line options
+
+-D data-directory
+ This is an alias for the --data-directory option.
+
+* GDB supports printing and modifying of variable length automatic arrays
+ as specified in ISO C99.
+
+* The ARM simulator now supports instruction level tracing
+ with or without disassembly.
+
+* Guile scripting
+
+ GDB now has support for scripting using Guile. Whether this is
+ available is determined at configure time.
+ Guile version 2.0 or greater is required.
+ Guile version 2.0.9 is well tested, earlier 2.0 versions are not.
+
+* New commands (for set/show, see "New options" below)
+
+guile [code]
+gu [code]
+ Invoke CODE by passing it to the Guile interpreter.
+
+guile-repl
+gr
+ Start a Guile interactive prompt (or "repl" for "read-eval-print loop").
+
+info auto-load guile-scripts [regexp]
+ Print the list of automatically loaded Guile scripts.
+
+* The source command is now capable of sourcing Guile scripts.
+ This feature is dependent on the debugger being built with Guile support.
+
+* New options
+
+set print symbol-loading (off|brief|full)
+show print symbol-loading
+ Control whether to print informational messages when loading symbol
+ information for a file. The default is "full", but when debugging
+ programs with large numbers of shared libraries the amount of output
+ becomes less useful.
+
+set guile print-stack (none|message|full)
+show guile print-stack
+ Show a stack trace when an error is encountered in a Guile script.
+
+set auto-load guile-scripts (on|off)
+show auto-load guile-scripts
+ Control auto-loading of Guile script files.
+
+maint ada set ignore-descriptive-types (on|off)
+maint ada show ignore-descriptive-types
+ Control whether the debugger should ignore descriptive types in Ada
+ programs. The default is not to ignore the descriptive types. See
+ the user manual for more details on descriptive types and the intended
+ usage of this option.
+
+set auto-connect-native-target
+
+ Control whether GDB is allowed to automatically connect to the
+ native target for the run, attach, etc. commands when not connected
+ to any target yet. See also "target native" below.
+
+set record btrace replay-memory-access (read-only|read-write)
+show record btrace replay-memory-access
+ Control what memory accesses are allowed during replay.
+
+maint set target-async (on|off)
+maint show target-async
+ This controls whether GDB targets operate in syncronous or
+ asyncronous mode. Normally the default is asyncronous, if it is
+ available; but this can be changed to more easily debug problems
+ occurring only in syncronous mode.
+
+set mi-async (on|off)
+show mi-async
+ Control whether MI asynchronous mode is preferred. This supersedes
+ "set target-async" of previous GDB versions.
+
+* "set target-async" is deprecated as a CLI option and is now an alias
+ for "set mi-async" (only puts MI into async mode).
+
+* Background execution commands (e.g., "c&", "s&", etc.) are now
+ possible ``out of the box'' if the target supports them. Previously
+ the user would need to explicitly enable the possibility with the
+ "set target-async on" command.
+
+* New features in the GDB remote stub, GDBserver
+
+ ** New option --debug-format=option1[,option2,...] allows one to add
+ additional text to each output. At present only timestamps
+ are supported: --debug-format=timestamps.
+ Timestamps can also be turned on with the
+ "monitor set debug-format timestamps" command from GDB.
+
+* The 'record instruction-history' command now starts counting instructions
+ at one. This also affects the instruction ranges reported by the
+ 'record function-call-history' command when given the /i modifier.
+
+* The command 'record function-call-history' supports a new modifier '/c' to
+ indent the function names based on their call stack depth.
+ The fields for the '/i' and '/l' modifier have been reordered.
+ The source line range is now prefixed with 'at'.
+ The instruction range is now prefixed with 'inst'.
+ Both ranges are now printed as '<from>, <to>' to allow copy&paste to the
+ "record instruction-history" and "list" commands.
+
+* The ranges given as arguments to the 'record function-call-history' and
+ 'record instruction-history' commands are now inclusive.
+
+* The btrace record target now supports the 'record goto' command.
+ For locations inside the execution trace, the back trace is computed
+ based on the information stored in the execution trace.
+
+* The btrace record target supports limited reverse execution and replay.
+ The target does not record data and therefore does not allow reading
+ memory or registers.
+
+* The "catch syscall" command now works on s390*-linux* targets.
+
+* The "compare-sections" command is no longer specific to target
+ remote. It now works with all targets.
+
+* All native targets are now consistently called "native".
+ Consequently, the "target child", "target GNU", "target djgpp",
+ "target procfs" (Solaris/Irix/OSF/AIX) and "target darwin-child"
+ commands have been replaced with "target native". The QNX/NTO port
+ leaves the "procfs" target in place and adds a "native" target for
+ consistency with other ports. The impact on users should be minimal
+ as these commands previously either throwed an error, or were
+ no-ops. The target's name is visible in the output of the following
+ commands: "help target", "info target", "info files", "maint print
+ target-stack".
+
+* The "target native" command now connects to the native target. This
+ can be used to launch native programs even when "set
+ auto-connect-native-target" is set to off.
+
+* GDB now supports access to Intel(R) MPX registers on GNU/Linux.
+
+* Support for Intel(R) AVX-512 registers on GNU/Linux.
+ Support displaying and modifying Intel(R) AVX-512 registers
+ $zmm0 - $zmm31 and $k0 - $k7 on GNU/Linux.
+
+* New remote packets
+
+qXfer:btrace:read's annex
+ The qXfer:btrace:read packet supports a new annex 'delta' to read
+ branch trace incrementally.
+
+* Python Scripting
+
+ ** Valid Python operations on gdb.Value objects representing
+ structs/classes invoke the corresponding overloaded operators if
+ available.
+ ** New `Xmethods' feature in the Python API. Xmethods are
+ additional methods or replacements for existing methods of a C++
+ class. This feature is useful for those cases where a method
+ defined in C++ source code could be inlined or optimized out by
+ the compiler, making it unavailable to GDB.
+
+* New targets
+PowerPC64 GNU/Linux little-endian powerpc64le-*-linux*
+
+* The "dll-symbols" command, and its two aliases ("add-shared-symbol-files"
+ and "assf"), have been deprecated. Use the "sharedlibrary" command, or
+ its alias "share", instead.
+
+* The commands "set remotebaud" and "show remotebaud" are no longer
+ supported. Use "set serial baud" and "show serial baud" (respectively)
+ instead.
+
+* MI changes
+
+ ** A new option "-gdb-set mi-async" replaces "-gdb-set
+ target-async". The latter is left as a deprecated alias of the
+ former for backward compatibility. If the target supports it,
+ CLI background execution commands are now always possible by
+ default, independently of whether the frontend stated a
+ preference for asynchronous execution with "-gdb-set mi-async".
+ Previously "-gdb-set target-async off" affected both MI execution
+ commands and CLI execution commands.
+
+*** Changes in GDB 7.7
+
+* Improved support for process record-replay and reverse debugging on
+ arm*-linux* targets. Support for thumb32 and syscall instruction
+ recording has been added.
+
+* GDB now supports SystemTap SDT probes on AArch64 GNU/Linux.
+
+* GDB now supports Fission DWP file format version 2.
+ http://gcc.gnu.org/wiki/DebugFission
+
+* New convenience function "$_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*".
+
+* New script contrib/gdb-add-index.sh for adding .gdb_index sections
+ to binaries.
+
+* Python scripting
+
+ ** Frame filters and frame decorators have been added.
+ ** Temporary breakpoints are now supported.
+ ** Line tables representation has been added.
+ ** New attribute 'parent_type' for gdb.Field objects.
+ ** gdb.Field objects can be used as subscripts on gdb.Value objects.
+ ** New attribute 'name' for gdb.Type objects.
+
+* New targets
+
+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.
projects / platform / upstream / binutils.git / blobdiff