X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2FNEWS;h=f54f75ba9230575c0c871f9c2bfe300756a75240;hb=9b7194bcb482ef2f8e6e94af3cec282b0a4599d2;hp=9ee0cec92279fdc31d301e3a5e58d2084268e9d6;hpb=03cebad2243ba8397a73181208d3244c1ad436f5;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index 9ee0cec922..f54f75ba92 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,7 +1,451 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 6.0: +*** Changes since GDB 6.5 + +* GDB can now be configured as a cross-debugger targeting native Windows +(mingw32) or Cygwin. It can communicate with a remote debugging stub +running on a Windows system over TCP/IP to debug Windows programs. + +* The GDB remote stub, gdbserver, has been updated to support Windows and +Cygwin debugging. Both single-threaded and multi-threaded programs are +supported. + +* The "set trust-readonly-sections" command works again. This command was +broken in GDB 6.3, 6.4, and 6.5. + +* New commands + +set substitute-path +unset substitute-path +show substitute-path + Manage a list of substitution rules that GDB uses to rewrite the name + of the directories where the sources are located. This can be useful + for instance when the sources were moved to a different location + between compilation and debugging. + +set trace-commands +show trace-commands + Print each CLI command as it is executed. Each command is prefixed with + a number of `+' symbols representing the nesting depth. + The source command now has a `-v' option to enable the same feature. + +* REMOVED features + +The ARM Demon monitor support (RDP protocol, "target rdp"). + +Kernel Object Display, an embedded debugging feature which only worked with +an obsolete version of Cisco IOS. + +The 'set download-write-size' and 'show download-write-size' commands. + +* New remote packets + +qSupported: + Tell a stub about GDB client features, and request remote target features. + The first feature implemented is PacketSize, which allows the target to + specify the size of packets it can handle - to minimize the number of + packets required and improve performance when connected to a remote + target. + +qXfer:auxv:read: + Fetch an OS auxilliary vector from the remote stub. This packet is a + more efficient replacement for qPart:auxv:read. + +* Removed remote packets + +qPart:auxv:read: + This packet has been replaced by qXfer:auxv:read. Only GDB 6.4 and 6.5 + used it, and only gdbserver implemented it. + +*** Changes in GDB 6.5 + +* New targets + +Renesas M32C/M16C m32c-elf + +Morpho Technologies ms1 ms1-elf + +* New commands + +init-if-undefined Initialize a convenience variable, but + only if it doesn't already have a value. + +The following commands are presently only implemented for native GNU/Linux: + +checkpoint Save a snapshot of the program state. + +restart Return the program state to a + previously saved state. + +info checkpoints List currently saved checkpoints. + +delete-checkpoint Delete a previously saved checkpoint. + +set|show detach-on-fork Tell gdb whether to detach from a newly + forked process, or to keep debugging it. + +info forks List forks of the user program that + are available to be debugged. + +fork Switch to debugging one of several + forks of the user program that are + available to be debugged. + +delete-fork Delete a fork from the list of forks + that are available to be debugged (and + kill the forked process). + +detach-fork Delete a fork from the list of forks + that are available to be debugged (and + allow the process to continue). + +* New architecture + +Morpho Technologies ms2 ms1-elf + +* Improved Windows host support + +GDB now builds as a cross debugger hosted on i686-mingw32, including +native console support, and remote communications using either +network sockets or serial ports. + +* Improved Modula-2 language support + +GDB can now print most types in the Modula-2 syntax. This includes: +basic types, set types, record types, enumerated types, range types, +pointer types and ARRAY types. Procedure var parameters are correctly +printed and hexadecimal addresses and character constants are also +written in the Modula-2 syntax. Best results can be obtained by using +GNU Modula-2 together with the -gdwarf-2 command line option. + +* REMOVED features + +The ARM rdi-share module. + +The Netware NLM debug server. + +*** Changes in GDB 6.4 + +* New native configurations + +OpenBSD/arm arm*-*-openbsd* +OpenBSD/mips64 mips64-*-openbsd* + +* New targets + +Morpho Technologies ms1 ms1-elf + +* New command line options + +--batch-silent As for --batch, but totally silent. +--return-child-result The debugger will exist with the same value + the child (debugged) program exited with. +--eval-command COMMAND, -ex COMMAND + Execute a single GDB CLI command. This may be + specified multiple times and in conjunction + with the --command (-x) option. + +* Deprecated commands removed + +The following commands, that were deprecated in 2000, have been +removed: + + Command Replacement + set|show arm disassembly-flavor set|show arm disassembler + othernames set arm disassembler + set|show remotedebug set|show debug remote + set|show archdebug set|show debug arch + set|show eventdebug set|show debug event + regs info registers + +* New BSD user-level threads support + +It is now possible to debug programs using the user-level threads +library on OpenBSD and FreeBSD. Currently supported (target) +configurations are: + +FreeBSD/amd64 x86_64-*-freebsd* +FreeBSD/i386 i386-*-freebsd* +OpenBSD/i386 i386-*-openbsd* + +Note that the new kernel threads libraries introduced in FreeBSD 5.x +are not yet supported. + +* New support for Matsushita MN10300 w/sim added +(Work in progress). mn10300-elf. + +* REMOVED configurations and files + +VxWorks and the XDR protocol *-*-vxworks +Motorola MCORE mcore-*-* +National Semiconductor NS32000 ns32k-*-* + +* New "set print array-indexes" command + +After turning this setting "on", GDB prints the index of each element +when displaying arrays. The default is "off" to preserve the previous +behavior. + +* VAX floating point support + +GDB now supports the not-quite-ieee VAX F and D floating point formats. + +* User-defined command support + +In addition to using $arg0..$arg9 for argument passing, it is now possible +to use $argc to determine now many arguments have been passed. See the +section on user-defined commands in the user manual for more information. + +*** Changes in GDB 6.3: + +* New command line option + +GDB now accepts -l followed by a number to set the timeout for remote +debugging. + +* GDB works with GCC -feliminate-dwarf2-dups + +GDB now supports a more compact representation of DWARF-2 debug +information using DW_FORM_ref_addr references. These are produced +by GCC with the option -feliminate-dwarf2-dups and also by some +proprietary compilers. With GCC, you must use GCC 3.3.4 or later +to use -feliminate-dwarf2-dups. + +* Internationalization + +When supported by the host system, GDB will be built with +internationalization (libintl). The task of marking up the sources is +continued, we're looking forward to our first translation. + +* Ada + +Initial support for debugging programs compiled with the GNAT +implementation of the Ada programming language has been integrated +into GDB. In this release, support is limited to expression evaluation. + +* New native configurations + +GNU/Linux/m32r m32r-*-linux-gnu + +* Remote 'p' packet + +GDB's remote protocol now includes support for the 'p' packet. This +packet is used to fetch individual registers from a remote inferior. + +* END-OF-LIFE registers[] compatibility module + +GDB's internal register infrastructure has been completely rewritten. +The new infrastructure making possible the implementation of key new +features including 32x64 (e.g., 64-bit amd64 GDB debugging a 32-bit +i386 application). + +GDB 6.3 will be the last release to include the the registers[] +compatibility module that allowed out-of-date configurations to +continue to work. This change directly impacts the following +configurations: + +hppa-*-hpux +ia64-*-aix +mips-*-irix* +*-*-lynx +mips-*-linux-gnu +sds protocol +xdr protocol +powerpc bdm protocol + +Unless there is activity to revive these configurations, they will be +made OBSOLETE in GDB 6.4, and REMOVED from GDB 6.5. + +* OBSOLETE configurations and files + +Configurations that have been declared obsolete in this release have +been commented out. Unless there is activity to revive these +configurations, the next release of GDB will have their sources +permanently REMOVED. + +h8300-*-* +mcore-*-* +mn10300-*-* +ns32k-*-* +sh64-*-* +v850-*-* + +*** Changes in GDB 6.2.1: + +* MIPS `break main; run' gave an heuristic-fence-post warning + +When attempting to run even a simple program, a warning about +heuristic-fence-post being hit would be reported. This problem has +been fixed. + +* MIPS IRIX 'long double' crashed GDB + +When examining a long double variable, GDB would get a segmentation +fault. The crash has been fixed (but GDB 6.2 cannot correctly examine +IRIX long double values). + +* VAX and "next" + +A bug in the VAX stack code was causing problems with the "next" +command. This problem has been fixed. + +*** Changes in GDB 6.2: + +* Fix for ``many threads'' + +On GNU/Linux systems that use the NPTL threads library, a program +rapidly creating and deleting threads would confuse GDB leading to the +error message: + + ptrace: No such process. + thread_db_get_info: cannot get thread info: generic error + +This problem has been fixed. + +* "-async" and "-noasync" options removed. + +Support for the broken "-noasync" option has been removed (it caused +GDB to dump core). + +* New ``start'' command. + +This command runs the program until the begining of the main procedure. + +* New BSD Kernel Data Access Library (libkvm) interface + +Using ``target kvm'' it is now possible to debug kernel core dumps and +live kernel memory images on various FreeBSD, NetBSD and OpenBSD +platforms. Currently supported (native-only) configurations are: + +FreeBSD/amd64 x86_64-*-freebsd* +FreeBSD/i386 i?86-*-freebsd* +NetBSD/i386 i?86-*-netbsd* +NetBSD/m68k m68*-*-netbsd* +NetBSD/sparc sparc-*-netbsd* +OpenBSD/amd64 x86_64-*-openbsd* +OpenBSD/i386 i?86-*-openbsd* +OpenBSD/m68k m68*-openbsd* +OpenBSD/sparc sparc-*-openbsd* + +* Signal trampoline code overhauled + +Many generic problems with GDB's signal handling code have been fixed. +These include: backtraces through non-contiguous stacks; recognition +of sa_sigaction signal trampolines; backtrace from a NULL pointer +call; backtrace through a signal trampoline; step into and out of +signal handlers; and single-stepping in the signal trampoline. + +Please note that kernel bugs are a limiting factor here. These +features have been shown to work on an s390 GNU/Linux system that +include a 2.6.8-rc1 kernel. Ref PR breakpoints/1702. + +* Cygwin support for DWARF 2 added. + +* New native configurations + +GNU/Linux/hppa hppa*-*-linux* +OpenBSD/hppa hppa*-*-openbsd* +OpenBSD/m68k m68*-*-openbsd* +OpenBSD/m88k m88*-*-openbsd* +OpenBSD/powerpc powerpc-*-openbsd* +NetBSD/vax vax-*-netbsd* +OpenBSD/vax vax-*-openbsd* + +* END-OF-LIFE frame compatibility module + +GDB's internal frame infrastructure has been completely rewritten. +The new infrastructure making it possible to support key new features +including DWARF 2 Call Frame Information. To aid in the task of +migrating old configurations to this new infrastructure, a +compatibility module, that allowed old configurations to continue to +work, was also included. + +GDB 6.2 will be the last release to include this frame compatibility +module. This change directly impacts the following configurations: + +h8300-*-* +mcore-*-* +mn10300-*-* +ns32k-*-* +sh64-*-* +v850-*-* +xstormy16-*-* + +Unless there is activity to revive these configurations, they will be +made OBSOLETE in GDB 6.3, and REMOVED from GDB 6.4. + +* REMOVED configurations and files + +Sun 3, running SunOS 3 m68*-*-sunos3* +Sun 3, running SunOS 4 m68*-*-sunos4* +Sun 2, running SunOS 3 m68000-*-sunos3* +Sun 2, running SunOS 4 m68000-*-sunos4* +Motorola 680x0 running LynxOS m68*-*-lynxos* +AT&T 3b1/Unix pc m68*-att-* +Bull DPX2 (68k, System V release 3) m68*-bull-sysv* +decstation mips-dec-* mips-little-* +riscos mips-*-riscos* mips-*-sysv* +sonymips mips-sony-* +sysv mips*-*-sysv4* (IRIX 5/6 not included) + +*** Changes in GDB 6.1.1: + +* TUI (Text-mode User Interface) built-in (also included in GDB 6.1) + +The TUI (Text-mode User Interface) is now built as part of a default +GDB configuration. It is enabled by either selecting the TUI with the +command line option "-i=tui" or by running the separate "gdbtui" +program. For more information on the TUI, see the manual "Debugging +with GDB". + +* Pending breakpoint support (also included in GDB 6.1) + +Support has been added to allow you to specify breakpoints in shared +libraries that have not yet been loaded. If a breakpoint location +cannot be found, and the "breakpoint pending" option is set to auto, +GDB queries you if you wish to make the breakpoint pending on a future +shared-library load. If and when GDB resolves the breakpoint symbol, +the pending breakpoint is removed as one or more regular breakpoints +are created. + +Pending breakpoints are very useful for GCJ Java debugging. + +* Fixed ISO-C build problems + +The files bfd/elf-bfd.h, gdb/dictionary.c and gdb/types.c contained +non ISO-C code that stopped them being built using a more strict ISO-C +compiler (e.g., IBM's C compiler). + +* Fixed build problem on IRIX 5 + +Due to header problems with , the file gdb/proc-api.c +wasn't able to compile compile on an IRIX 5 system. + +* Added execute permission to gdb/gdbserver/configure + +The shell script gdb/testsuite/gdb.stabs/configure lacked execute +permission. This bug would cause configure to fail on a number of +systems (Solaris, IRIX). Ref: server/519. + +* Fixed build problem on hpux2.0w-hp-hpux11.00 using the HP ANSI C compiler + +Older HPUX ANSI C compilers did not accept variable array sizes. somsolib.c +has been updated to use constant array sizes. + +* Fixed a panic in the DWARF Call Frame Info code on Solaris 2.7 + +GCC 3.3.2, on Solaris 2.7, includes the DW_EH_PE_funcrel encoding in +its generated DWARF Call Frame Info. This encoding was causing GDB to +panic, that panic has been fixed. Ref: gdb/1628. + +* Fixed a problem when examining parameters in shared library code. + +When examining parameters in optimized shared library code generated +by a mainline GCC, GDB would incorrectly report ``Variable "..." is +not available''. GDB now correctly displays the variable's value. + +*** Changes in GDB 6.1: * Removed --with-mmalloc @@ -36,9 +480,23 @@ GDB support for location expressions has been extended to support function arguments and frame bases. Older versions of GDB could crash when they encountered these. +* C++ nested types and namespaces + +GDB's support for nested types and namespaces in C++ has been +improved, especially if you use the DWARF 2 debugging format. (This +is the default for recent versions of GCC on most platforms.) +Specifically, if you have a class "Inner" defined within a class or +namespace "Outer", then GDB realizes that the class's name is +"Outer::Inner", not simply "Inner". This should greatly reduce the +frequency of complaints about not finding RTTI symbols. In addition, +if you are stopped at inside of a function defined within a namespace, +GDB modifies its name lookup accordingly. + * New native configurations NetBSD/amd64 x86_64-*-netbsd* +OpenBSD/amd64 x86_64-*-openbsd* +OpenBSD/alpha alpha*-*-openbsd* OpenBSD/sparc sparc-*-openbsd* OpenBSD/sparc64 sparc64-*-openbsd* @@ -82,6 +540,7 @@ HP/PA running BSD hppa*-*-bsd* HP/PA running OSF/1 hppa*-*-osf* HP/PA Pro target hppa*-*-pro* PMAX (MIPS) running Mach 3.0 mips*-*-mach3* +386BSD i[3456]86-*-bsd* Sequent family i[3456]86-sequent-sysv4* i[3456]86-sequent-sysv* i[3456]86-sequent-bsd*