X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2FNEWS;h=4798b7b4ffe45c99835710468b63c0f4df2054d3;hb=7fda53d583bf5baaa15ccdea78c48bf57b205dad;hp=9a27b646e25a89851908107558095b04b5eba8c0;hpb=1bfeeb0f75817b38f7ca569b347cce0873754985;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index 9a27b646e2..4798b7b4ff 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,7 +1,51 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 7.3.1 +*** Changes since GDB 7.4 + +* Python scripting + + ** The "maint set python print-stack on|off" is now deleted. + + ** A new class, gdb.printing.FlagEnumerationPrinter, can be used to + apply "flag enum"-style pretty-printing to any enum. + +* GDBserver now supports stdio connections. + E.g. (gdb) target remote | ssh myhost gdbserver - hello + +* The binary "gdbtui" can no longer be built or installed. + Use "gdb -tui" instead. + +* GDB will now print "flag" enums specially. A flag enum is one where + all the enumerator values have no bits in common when pairwise + "and"ed. When printing a value whose type is a flag enum, GDB will + show all the constants, e.g., for enum E { ONE = 1, TWO = 2}: + (gdb) print (enum E) 3 + $1 = (ONE | TWO) + +* The filename part of a linespec will now match trailing components + of a source file name. For example, "break gcc/expr.c:1000" will + now set a breakpoint in build/gcc/expr.c, but not + build/libcpp/expr.c. + +* The "info proc" and "generate-core-file" commands will now also + work on remote targets connected to GDBserver on Linux. + +* The command "info catch" has been removed. It has been disabled + since December 2007. + +* New commands + + ** "catch load" and "catch unload" can be used to stop when a shared + library is loaded or unloaded, respectively. + +*** Changes in GDB 7.4 + +* GDB now handles ambiguous linespecs more consistently; the existing + FILE:LINE support has been expanded to other types of linespecs. A + breakpoint will now be set on all matching locations in all + inferiors, and locations will be added or removed according to + inferior changes. * GDB now allows you to skip uninteresting functions and files when stepping with the "skip function" and "skip file" commands. @@ -23,9 +67,11 @@ existing one. ** The "maint set python print-stack on|off" command has been - deprecated, and a new command: "set python print-stack on|off" has - replaced it. Additionally, the default for "print-stack" is now - "off". + deprecated and will be deleted in GDB 7.5. + A new command: "set python print-stack none|full|message" has + replaced it. Additionally, the default for "print-stack" is + now "message", which just prints the error message without + the stack trace. ** A prompt substitution hook (prompt_hook) is now available to the Python API. @@ -51,6 +97,10 @@ ** The "gdb.breakpoint" function has been deprecated in favor of "gdb.breakpoints". + ** A new class "gdb.FinishBreakpoint" is provided to catch the return + of a function. This class is based on the "finish" command + available in the CLI. + ** Type objects for struct and union types now allow access to the fields using standard Python dictionary (mapping) methods. For example, "some_type['myfield']" now works, as does @@ -65,6 +115,16 @@ the standard Python "iteritems" method, it will recursively traverse any anonymous fields. +* MI changes + + ** "*stopped" events can report several new "reason"s, such as + "solib-event". + + ** Breakpoint changes are now notified using new async records, like + "=breakpoint-modified". + + ** New command -ada-task-info. + * libthread-db-search-path now supports two special values: $sdir and $pdir. $sdir specifies the default system locations of shared libraries. $pdir specifies the directory where the libpthread used by the application @@ -97,13 +157,18 @@ the first connection is made. The listening port used by GDBserver will become available after that. -* New commands "info macros", "info definitions", - and "alias" have been added. +* New commands "info macros" and "alias" have been added. * New function parameters suffix @entry specifies value of function parameter at the time the function got called. Entry values are available only since gcc version 4.7. +* New commands + +!SHELL COMMAND + "!" is now an alias of the "shell" command. + Note that no space is needed between "!" and SHELL COMMAND. + * Changed commands watch EXPRESSION mask MASK_VALUE @@ -114,6 +179,31 @@ info auto-load-scripts [REGEXP] This command was formerly named "maintenance print section-scripts". It is now generally useful and is no longer a maintenance-only command. +info macro [-all] [--] MACRO + The info macro command has new options `-all' and `--'. The first for + printing all definitions of a macro. The second for explicitly specifying + the end of arguments and the beginning of the macro name in case the macro + name starts with a hyphen. + +collect[/s] EXPRESSIONS + The tracepoint collect command now takes an optional modifier "/s" + that directs it to dereference pointer-to-character types and + collect the bytes of memory up to a zero byte. The behavior is + similar to what you see when you use the regular print command on a + string. An optional integer following the "/s" sets a bound on the + number of bytes that will be collected. + +tstart [NOTES] + The trace start command now interprets any supplied arguments as a + note to be recorded with the trace run, with an effect similar to + setting the variable trace-notes. + +tstop [NOTES] + The trace stop command now interprets any arguments as a note to be + mentioned along with the tstatus report that the trace was stopped + with a command. The effect is similar to setting the variable + trace-stop-notes. + * Tracepoints can now be enabled and disabled at any time after a trace experiment has been started using the standard "enable" and "disable" commands. It is now possible to start a trace experiment with no enabled @@ -121,6 +211,10 @@ info auto-load-scripts [REGEXP] begin, assuming that tracepoints will be enabled as needed while the trace is running. +* Fast tracepoints on 32-bit x86-architectures can now be placed at + locations with 4-byte instructions, when they were previously + limited to locations with instructions of 5 bytes or longer. + * New options set extended-prompt @@ -142,6 +236,33 @@ show debug entry-values Control display of debugging info for determining frame argument values at function entry and virtual tail call frames. +set basenames-may-differ +show basenames-may-differ + Set whether a source file may have multiple base names. + (A "base name" is the name of a file with the directory part removed. + Example: The base name of "/home/user/hello.c" is "hello.c".) + If set, GDB will canonicalize file names (e.g., expand symlinks) + before comparing them. Canonicalization is an expensive operation, + but it allows the same file be known by more than one base name. + If not set (the default), all source files are assumed to have just + one base name, and gdb will do file name comparisons more efficiently. + +set trace-user +show trace-user +set trace-notes +show trace-notes + Set a user name and notes for the current and any future trace runs. + This is useful for long-running and/or disconnected traces, to + inform others (or yourself) as to who is running the trace, supply + contact information, or otherwise explain what is going on. + +set trace-stop-notes +show trace-stop-notes + Set a note attached to the trace run, that is displayed when the + trace has been stopped by a tstop command. This is useful for + instance as an explanation, if you are stopping a trace run that was + started by someone else. + * New remote packets QTEnable @@ -152,6 +273,19 @@ QTDisable Dynamically disable a tracepoint in a started trace experiment. +QTNotes + + Set the user and notes of the trace run. + +qTP + + Query the current status of a tracepoint. + +qTMinFTPILen + + Query the minimum length of instruction at which a fast tracepoint may + be placed. + * Dcache size (number of lines) and line-size are now runtime-configurable via "set dcache line" and "set dcache line-size" commands. @@ -159,6 +293,10 @@ QTDisable Texas Instruments TMS320C6x tic6x-*-* +* New Simulators + +Renesas RL78 rl78-*-elf + *** Changes in GDB 7.3.1 * The build failure for NetBSD and OpenBSD targets have now been fixed.