*** Changes since GDB 7.1
+* C++ Improvements:
+
+ ** Argument Dependent Lookup (ADL)
+
+ In C++ ADL lookup directs function search to the namespaces of its
+ arguments even if the namespace has not been imported.
+ For example:
+ namespace A
+ {
+ class B { };
+ void foo (B) { }
+ }
+ ...
+ A::B b
+ foo(b)
+ Here the compiler will search for `foo' in the namespace of 'b'
+ and find A::foo. GDB now supports this. This construct is commonly
+ used in the Standard Template Library for operators.
+
+ ** Improved User Defined Operator Support
+
+ In addition to member operators, GDB now supports lookup of operators
+ defined in a namespace and imported with a `using' directive, operators
+ defined in the global scope, operators imported implicitly from an
+ anonymous namespace, and the ADL operators mentioned in the previous
+ entry.
+ GDB now also supports proper overload resolution for all the previously
+ mentioned flavors of operators.
+
+ ** static const class members
+
+ Printing of static const class members that are initialized in the
+ class definition has been fixed.
+
* Windows Thread Information Block access.
On Windows targets, GDB now supports displaying the Windows Thread
thread-specific pointer to the TIB. This feature is also supported
when remote debugging using GDBserver.
+* Static tracepoints
+
+ Static tracepoints are calls in the user program into a tracing
+ library. One such library is a port of the LTTng kernel tracer to
+ userspace --- UST (LTTng Userspace Tracer, http://lttng.org/ust).
+ When debugging with GDBserver, GDB now supports combining the GDB
+ tracepoint machinery with such libraries. For example: the user can
+ use GDB to probe a static tracepoint marker (a call from the user
+ program into the tracing library) with the new "strace" command (see
+ "New commands" below). This creates a "static tracepoint" in the
+ breakpoint list, that can be manipulated with the same feature set
+ as fast and regular tracepoints. E.g., collect registers, local and
+ global variables, collect trace state variables, and define
+ tracepoint conditions. In addition, the user can collect extra
+ static tracepoint marker specific data, by collecting the new
+ $_sdata internal variable. When analyzing the trace buffer, you can
+ inspect $_sdata like any other variable available to GDB. For more
+ information, see the "Tracepoints" chapter in GDB user manual. New
+ remote packets have been defined to support static tracepoints, see
+ the "New remote packets" section below.
+
* New remote packets
qGetTIBAddr
Return the address of the Windows Thread Information Block of a given thread.
+qRelocInsn
+
+ In response to several of the tracepoint packets, the target may now
+ also respond with a number of intermediate `qRelocInsn' request
+ packets before the final result packet, to have GDB handle
+ relocating an instruction to execute at a different address. This
+ is particularly useful for stubs that support fast tracepoints. GDB
+ reports support for this feature in the qSupported packet.
+
+qTfSTM, qTsSTM
+
+ List static tracepoint markers in the target program.
+
+qTSTMat
+
+ List static tracepoint markers at a given address in the target
+ program.
+
+qXfer:statictrace:read
+
+ Read the static trace data collected (by a `collect $_sdata'
+ tracepoint action). The remote stub reports support for this packet
+ to gdb's qSupported query.
+
* The source command now accepts a -s option to force searching for the
script in the source search path even if the script name specifies
a directory.
* New features in the GDB remote stub, GDBserver
- - GDBserver now support tracepoints. The feature is currently
- supported by the i386-linux and amd64-linux builds.
+ - GDBserver now support tracepoints (including fast tracepoints, and
+ static tracepoints). The feature is currently supported by the
+ i386-linux and amd64-linux builds. See the "Tracepoints support
+ in gdbserver" section in the manual for more information.
+
+ GDBserver JIT compiles the tracepoint's conditional agent
+ expression bytecode into native code whenever possible for low
+ overhead dynamic tracepoints conditionals. For such tracepoints,
+ an expression that examines program state is evaluated when the
+ tracepoint is reached, in order to determine whether to capture
+ trace data. If the condition is simple and false, processing the
+ tracepoint finishes very quickly and no data is gathered.
+
+ GDBserver interfaces with the UST (LTTng Userspace Tracer) library
+ for static tracepoints support.
+
+ - GDBserver now supports x86_64 Windows 64-bit debugging.
* GDB now sends xmlRegisters= in qSupported packet to indicate that
it understands register description.
its argument, limiting the functions selected by the regex to those
in the specified file.
+* Support for remote debugging Windows and SymbianOS shared libraries
+ from Unix hosts has been improved. Non Windows GDB builds now can
+ understand target reported file names that follow MS-DOS based file
+ system semantics, such as file names that include drive letters and
+ use the backslash character as directory separator. This makes it
+ possible to transparently use the "set sysroot" and "set
+ solib-search-path" on Unix hosts to point as host copies of the
+ target's shared libraries. See the new command "set
+ target-file-system-kind" described below, and the "Commands to
+ specify files" section in the user manual for more information.
+
* New commands
+eval template, expressions...
+ Convert the values of one or more expressions under the control
+ of the string template to a command line, and call it.
+
+set target-file-system-kind unix|dos-based|auto
+show target-file-system-kind
+ Set or show the assumed file system kind for target reported file
+ names.
+
save breakpoints <filename>
Save all current breakpoint definitions to a file suitable for use
in a later debugging session. To read the saved breakpoint
`save tracepoints' is a new alias for `save-tracepoints'. The latter
is now deprecated.
+info static-tracepoint-markers
+ Display information about static tracepoint markers in the target.
+
+strace FN | FILE:LINE | *ADDR | -m MARKER_ID
+ Define a static tracepoint by probing a marker at the given
+ function, line, address, or marker ID.
+
* Python scripting
+** GDB now provides a new directory location, called the python directory,
+ where Python scripts written for GDB can be installed. The location
+ of that directory is <data-directory>/python, where <data-directory>
+ is the GDB data directory. For more details, see section `Scripting
+ GDB using Python' in the manual.
+
** The GDB Python API now has access to breakpoints, symbols, symbol
- tables, program spaces, and frame's code blocks.
+ tables, program spaces, inferiors, threads and frame's code blocks.
+ Additionally, GDB Parameters can now be created from the API, and
+ manipulated via set/show in the CLI.
** New functions gdb.target_charset, gdb.target_wide_charset,
- gdb.progspaces, and gdb.current_progspace.
+ gdb.progspaces, gdb.current_progspace, and gdb.string_to_argv.
+
+** New exception gdb.GdbError.
** Pretty-printers are now also looked up in the current program space.
+** Pretty-printers can now be individually enabled and disabled.
+
+** GDB now looks for names of Python scripts to auto-load in a
+ special section named `.debug_gdb_scripts', in addition to looking
+ for a OBJFILE-gdb.py script when OBJFILE is read by the debugger.
+
* Tracepoint actions were unified with breakpoint commands. In particular,
there are no longer differences in "info break" output for breakpoints and
tracepoints and the "commands" command can be used for both tracepoints and
ARM Symbian arm*-*-symbianelf*
+* D language support.
+ GDB now supports debugging programs written in the D programming
+ language.
+
*** Changes in GDB 7.1
* C++ Improvements
projects / binutils-gdb.git / blobdiff