X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2FNEWS;h=b56fe8e1a15648d40d42bc331fb3ebc1b7a7b8b7;hb=2ddf4301102f7a78a03bccf86051a63111b1fcc1;hp=b54a414abb51ea1cd7767250db30a25b8c9ad57f;hpb=ed3ef33944c39d9a3cea72b9a7cef3c20f0e3461;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index b54a414abb..b56fe8e1a1 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,7 +1,62 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 7.7 +*** 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. + +*** 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 @@ -28,6 +83,13 @@ info auto-load guile-scripts [regexp] * 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. @@ -43,6 +105,36 @@ maint ada show ignore-descriptive-types 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 @@ -76,15 +168,69 @@ maint ada show ignore-descriptive-types * 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 @@ -5672,5 +5818,3 @@ GDB now handles cross debugging. If you are remotely debugging between two different machines, type ``./configure host -target=targ''. Host is the machine where GDB will run; targ is the machine where the program that you are debugging will run. - - * GDB now supports access to Intel(R) MPX registers on GNU/Linux.