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Diffstat (limited to 'contrib/gdb/gdb/NEWS')
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diff --git a/contrib/gdb/gdb/NEWS b/contrib/gdb/gdb/NEWS index f3acc60..abba0e7 100644 --- a/contrib/gdb/gdb/NEWS +++ b/contrib/gdb/gdb/NEWS @@ -1,6 +1,439 @@ What has changed in GDB? (Organized release by release) +*** 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 <sys/proc.h>, 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 + +Support for the mmalloc memory manager has been removed, as it +conflicted with the internal gdb byte cache. + +* Changes in AMD64 configurations + +The AMD64 target now includes the %cs and %ss registers. As a result +the AMD64 remote protocol has changed; this affects the floating-point +and SSE registers. If you rely on those registers for your debugging, +you should upgrade gdbserver on the remote side. + +* Revised SPARC target + +The SPARC target has been completely revised, incorporating the +FreeBSD/sparc64 support that was added for GDB 6.0. As a result +support for LynxOS and SunOS 4 has been dropped. Calling functions +from within GDB on operating systems with a non-executable stack +(Solaris, OpenBSD) now works. + +* New C++ demangler + +GDB has a new C++ demangler which does a better job on the mangled +names generated by current versions of g++. It also runs faster, so +with this and other changes gdb should now start faster on large C++ +programs. + +* DWARF 2 Location Expressions + +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* + +* New debugging protocols + +M32R with SDI protocol m32r-*-elf* + +* "set prompt-escape-char" command deleted. + +The command "set prompt-escape-char" has been deleted. This command, +and its very obscure effet on GDB's prompt, was never documented, +tested, nor mentioned in the NEWS file. + +* 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. + +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) + +* REMOVED configurations and files + +SGI Irix-4.x mips-sgi-irix4 or iris4 +SGI Iris (MIPS) running Irix V3: mips-sgi-irix or iris +Z8000 simulator z8k-zilog-none or z8ksim +Matsushita MN10200 w/simulator mn10200-*-* +H8/500 simulator h8500-hitachi-hms or h8500hms +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* +SPARC running LynxOS sparc-*-lynxos* +SPARC running SunOS 4 sparc-*-sunos4* +Tsqware Sparclet sparclet-*-* +Fujitsu SPARClite sparclite-fujitsu-none or sparclite + +*** Changes in GDB 6.0: + +* Objective-C + +Support for debugging the Objective-C programming language has been +integrated into GDB. + +* New backtrace mechanism (includes DWARF 2 Call Frame Information). + +DWARF 2's Call Frame Information makes available compiler generated +information that more exactly describes the program's run-time stack. +By using this information, GDB is able to provide more robust stack +backtraces. + +The i386, amd64 (nee, x86-64), Alpha, m68hc11, ia64, and m32r targets +have been updated to use a new backtrace mechanism which includes +DWARF 2 CFI support. + +* Hosted file I/O. + +GDB's remote protocol has been extended to include support for hosted +file I/O (where the remote target uses GDB's file system). See GDB's +remote protocol documentation for details. + +* All targets using the new architecture framework. + +All of GDB's targets have been updated to use the new internal +architecture framework. The way is now open for future GDB releases +to include cross-architecture native debugging support (i386 on amd64, +ppc32 on ppc64). + +* GNU/Linux's Thread Local Storage (TLS) + +GDB now includes support for for the GNU/Linux implementation of +per-thread variables. + +* GNU/Linux's Native POSIX Thread Library (NPTL) + +GDB's thread code has been updated to work with either the new +GNU/Linux NPTL thread library or the older "LinuxThreads" library. + +* Separate debug info. + +GDB, in conjunction with BINUTILS, now supports a mechanism for +automatically loading debug information from a separate file. Instead +of shipping full debug and non-debug versions of system libraries, +system integrators can now instead ship just the stripped libraries +and optional debug files. + +* DWARF 2 Location Expressions + +DWARF 2 Location Expressions allow the compiler to more completely +describe the location of variables (even in optimized code) to the +debugger. + +GDB now includes preliminary support for location expressions (support +for DW_OP_piece is still missing). + +* Java + +A number of long standing bugs that caused GDB to die while starting a +Java application have been fixed. GDB's Java support is now +considered "useable". + +* GNU/Linux support for fork, vfork, and exec. + +The "catch fork", "catch exec", "catch vfork", and "set follow-fork-mode" +commands are now implemented for GNU/Linux. They require a 2.5.x or later +kernel. + +* GDB supports logging output to a file + +There are two new commands, "set logging" and "show logging", which can be +used to capture GDB's output to a file. + +* The meaning of "detach" has changed for gdbserver + +The "detach" command will now resume the application, as documented. To +disconnect from gdbserver and leave it stopped, use the new "disconnect" +command. + +* d10v, m68hc11 `regs' command deprecated + +The `info registers' command has been updated so that it displays the +registers using a format identical to the old `regs' command. + +* Profiling support + +A new command, "maint set profile on/off", has been added. This command can +be used to enable or disable profiling while running GDB, to profile a +session or a set of commands. In addition there is a new configure switch, +"--enable-profiling", which will cause GDB to be compiled with profiling +data, for more informative profiling results. + +* Default MI syntax changed to "mi2". + +The default MI (machine interface) syntax, enabled by the command line +option "-i=mi", has been changed to "mi2". The previous MI syntax, +"mi1", can be enabled by specifying the option "-i=mi1". + +Support for the original "mi0" syntax (included in GDB 5.0) has been +removed. + +Fix for gdb/192: removed extraneous space when displaying frame level. +Fix for gdb/672: update changelist is now output in mi list format. +Fix for gdb/702: a -var-assign that updates the value now shows up + in a subsequent -var-update. + +* New native configurations. + +FreeBSD/amd64 x86_64-*-freebsd* + +* Multi-arched targets. + +HP/PA HPUX11 hppa*-*-hpux* +Renesas M32R/D w/simulator m32r-*-elf* + +* 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. + +Z8000 simulator z8k-zilog-none or z8ksim +Matsushita MN10200 w/simulator mn10200-*-* +H8/500 simulator h8500-hitachi-hms or h8500hms +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* +Sequent family i[3456]86-sequent-sysv4* + i[3456]86-sequent-sysv* + i[3456]86-sequent-bsd* +Tsqware Sparclet sparclet-*-* +Fujitsu SPARClite sparclite-fujitsu-none or sparclite + +* REMOVED configurations and files + +V850EA ISA +Motorola Delta 88000 running Sys V m88k-motorola-sysv or delta88 +IBM AIX PS/2 i[3456]86-*-aix +i386 running Mach 3.0 i[3456]86-*-mach3* +i386 running Mach i[3456]86-*-mach* +i386 running OSF/1 i[3456]86-*osf1mk* +HP/Apollo 68k Family m68*-apollo*-sysv*, + m68*-apollo*-bsd*, + m68*-hp-bsd*, m68*-hp-hpux* +Argonaut Risc Chip (ARC) arc-*-* +Mitsubishi D30V d30v-*-* +Fujitsu FR30 fr30-*-elf* +OS/9000 i[34]86-*-os9k +I960 with MON960 i960-*-coff + +* MIPS $fp behavior changed + +The convenience variable $fp, for the MIPS, now consistently returns +the address of the current frame's base. Previously, depending on the +context, $fp could refer to either $sp or the current frame's base +address. See ``8.10 Registers'' in the manual ``Debugging with GDB: +The GNU Source-Level Debugger''. + +*** Changes in GDB 5.3: + +* GNU/Linux shared library multi-threaded performance improved. + +When debugging a multi-threaded application on GNU/Linux, GDB now uses +`/proc', in preference to `ptrace' for memory reads. This may result +in an improvement in the start-up time of multi-threaded, shared +library applications when run under GDB. One GDB user writes: ``loads +shared libs like mad''. + +* ``gdbserver'' now supports multi-threaded applications on some targets + +Support for debugging multi-threaded applications which use +the GNU/Linux LinuxThreads package has been added for +arm*-*-linux*-gnu*, i[3456]86-*-linux*-gnu*, mips*-*-linux*-gnu*, +powerpc*-*-linux*-gnu*, and sh*-*-linux*-gnu*. + +* GDB now supports C/C++ preprocessor macros. + +GDB now expands preprocessor macro invocations in C/C++ expressions, +and provides various commands for showing macro definitions and how +they expand. + +The new command `macro expand EXPRESSION' expands any macro +invocations in expression, and shows the result. + +The new command `show macro MACRO-NAME' shows the definition of the +macro named MACRO-NAME, and where it was defined. + +Most compilers don't include information about macros in the debugging +information by default. In GCC 3.1, for example, you need to compile +your program with the options `-gdwarf-2 -g3'. If the macro +information is present in the executable, GDB will read it. + +* Multi-arched targets. + +DEC Alpha (partial) alpha*-*-* +DEC VAX (partial) vax-*-* +NEC V850 v850-*-* +National Semiconductor NS32000 (partial) ns32k-*-* +Motorola 68000 (partial) m68k-*-* +Motorola MCORE mcore-*-* + +* New targets. + +Fujitsu FRV architecture added by Red Hat frv*-*-* + + +* New native configurations + +Alpha NetBSD alpha*-*-netbsd* +SH NetBSD sh*-*-netbsdelf* +MIPS NetBSD mips*-*-netbsd* +UltraSPARC NetBSD sparc64-*-netbsd* + +* 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. + +Mitsubishi D30V d30v-*-* +OS/9000 i[34]86-*-os9k +IBM AIX PS/2 i[3456]86-*-aix +Fujitsu FR30 fr30-*-elf* +Motorola Delta 88000 running Sys V m88k-motorola-sysv or delta88 +Argonaut Risc Chip (ARC) arc-*-* +i386 running Mach 3.0 i[3456]86-*-mach3* +i386 running Mach i[3456]86-*-mach* +i386 running OSF/1 i[3456]86-*osf1mk* +HP/Apollo 68k Family m68*-apollo*-sysv*, + m68*-apollo*-bsd*, + m68*-hp-bsd*, m68*-hp-hpux* +I960 with MON960 i960-*-coff + +* OBSOLETE languages + +CHILL, a Pascal like language used by telecommunications companies. + +* REMOVED configurations and files + +AMD 29k family via UDI a29k-amd-udi, udi29k +A29K VxWorks a29k-*-vxworks +AMD 29000 embedded, using EBMON a29k-none-none +AMD 29000 embedded with COFF a29k-none-coff +AMD 29000 embedded with a.out a29k-none-aout + +testsuite/gdb.hp/gdb.threads-hp/ directory + +* New command "set max-user-call-depth <nnn>" + +This command allows the user to limit the call depth of user-defined +commands. The default is 1024. + +* Changes in FreeBSD/i386 native debugging. + +Support for the "generate-core-file" has been added. + +* New commands "dump", "append", and "restore". + +These commands allow data to be copied from target memory +to a bfd-format or binary file (dump and append), and back +from a file into memory (restore). + +* Improved "next/step" support on multi-processor Alpha Tru64. + +The previous single-step mechanism could cause unpredictable problems, +including the random appearance of SIGSEGV or SIGTRAP signals. The use +of a software single-step mechanism prevents this. + *** Changes in GDB 5.2.1: * New targets. |