X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2FNEWS;h=1b64628f222eb2ee27d1d8bf37a90daea42c2226;hb=0748d941c8e67e76bd9caeb21f7195cf690c3ff8;hp=a251a7ebff58a0eff03b749d7987e2dbdf85539f;hpb=d72751493e65ea71eebcc9aed85d039ed995bd3f;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index a251a7ebff..1b64628f22 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,21 +1,481 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 5.0: +*** Changes since GDB 6.0: + +* 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. + +* New native configurations + +NetBSD/amd64 x86_64-*-netbsd* + +* 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* +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 + +*** 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 " + +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. + +Atmel AVR avr*-*-* + +* Bug fixes + +gdb/182: gdb/323: gdb/237: On alpha, gdb was reporting: +mdebugread.c:2443: gdb-internal-error: sect_index_data not initialized +Fix, by Joel Brobecker imported from mainline. + +gdb/439: gdb/291: On some ELF object files, gdb was reporting: +dwarf2read.c:1072: gdb-internal-error: sect_index_text not initialize +Fix, by Fred Fish, imported from mainline. + +Dwarf2 .debug_frame & .eh_frame handler improved in many ways. +Surprisingly enough, it works now. +By Michal Ludvig, imported from mainline. + +i386 hardware watchpoint support: +avoid misses on second run for some targets. +By Pierre Muller, imported from mainline. + +*** Changes in GDB 5.2: + +* New command "set trust-readonly-sections on[off]". + +This command is a hint that tells gdb that read-only sections +really are read-only (ie. that their contents will not change). +In this mode, gdb will go to the object file rather than the +target to read memory from read-only sections (such as ".text"). +This can be a significant performance improvement on some +(notably embedded) targets. + +* New command "generate-core-file" (or "gcore"). + +This new gdb command allows the user to drop a core file of the child +process state at any time. So far it's been implemented only for +GNU/Linux and Solaris, but should be relatively easily ported to other +hosts. Argument is core file name (defaults to core.). + +* New command line option + +GDB now accepts --pid or -p followed by a process id. + +* Change in command line behavior -- corefiles vs. process ids. + +There is a subtle behavior in the way in which GDB handles +command line arguments. The first non-flag argument is always +a program to debug, but the second non-flag argument may either +be a corefile or a process id. Previously, GDB would attempt to +open the second argument as a corefile, and if that failed, would +issue a superfluous error message and then attempt to attach it as +a process. Now, if the second argument begins with a non-digit, +it will be treated as a corefile. If it begins with a digit, +GDB will attempt to attach it as a process, and if no such process +is found, will then attempt to open it as a corefile. + +* Changes in ARM configurations. + +Multi-arch support is enabled for all ARM configurations. The ARM/NetBSD +configuration is fully multi-arch. + +* New native configurations + +ARM NetBSD arm*-*-netbsd* +x86 OpenBSD i[3456]86-*-openbsd* +AMD x86-64 running GNU/Linux x86_64-*-linux-* +Sparc64 running FreeBSD sparc64-*-freebsd* + +* New targets + +Sanyo XStormy16 xstormy16-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. + +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 + +* REMOVED configurations and files + +TI TMS320C80 tic80-*-* +WDC 65816 w65-*-* +PowerPC Solaris powerpcle-*-solaris* +PowerPC Windows NT powerpcle-*-cygwin32 +PowerPC Netware powerpc-*-netware* +Harris/CXUX m88k m88*-harris-cxux* +Most ns32k hosts and targets ns32k-*-mach3* ns32k-umax-* + ns32k-utek-sysv* ns32k-utek-* +SunOS 4.0.Xi on i386 i[3456]86-*-sunos* +Ultracomputer (29K) running Sym1 a29k-nyu-sym1 a29k-*-kern* +Sony NEWS (68K) running NEWSOS 3.x m68*-sony-sysv news +ISI Optimum V (3.05) under 4.3bsd. m68*-isi-* +Apple Macintosh (MPW) host and target N/A host, powerpc-*-macos* + +* Changes to command line processing + +The new `--args' feature can be used to specify command-line arguments +for the inferior from gdb's command line. + +* Changes to key bindings + +There is a new `operate-and-get-next' function bound to `C-o'. + +*** Changes in GDB 5.1.1 + +Fix compile problem on DJGPP. + +Fix a problem with floating-point registers on the i386 being +corrupted. + +Fix to stop GDB crashing on .debug_str debug info. + +Numerous documentation fixes. + +Numerous testsuite fixes. + +*** Changes in GDB 5.1: * New native configurations Alpha FreeBSD alpha*-*-freebsd* x86 FreeBSD 3.x and 4.x i[3456]86*-freebsd[34]* -MIPS Linux mips*-*-linux* +MIPS GNU/Linux mips*-*-linux* MIPS SGI Irix 6.x mips*-sgi-irix6* ia64 AIX ia64-*-aix* +s390 and s390x GNU/Linux {s390,s390x}-*-linux* * New targets Motorola 68HC11 and 68HC12 m68hc11-elf CRIS cris-axis -UltraSparc running Linux sparc64-*-linux* +UltraSparc running GNU/Linux sparc64-*-linux* * OBSOLETE configurations and files @@ -51,9 +511,9 @@ ARM RISCix arm-*-* (as host) Tahoe tahoe-*-* ser-ocd.c *-*-* -* GDB has been converted to ANS/ISO C. +* GDB has been converted to ISO C. -GDB's source code has been converted to ANS/ISO C. In particular, the +GDB's source code has been converted to ISO C. In particular, the sources are fully protoized, and rely on standard headers being present. @@ -338,7 +798,7 @@ enabled by configuring with: HP-UX 10.20 hppa*-*-hpux10.20 HP-UX 11.x hppa*-*-hpux11.0* -M68K Linux m68*-*-linux* +M68K GNU/Linux m68*-*-linux* * New targets @@ -899,7 +1359,7 @@ breakpoints in shared libraries before the executable is run. There is a new hardware breakpoint for the watch command for sparclite targets. See gdb/sparclite/hw_breakpoint.note. -Hardware watchpoints are also now supported under Linux. +Hardware watchpoints are also now supported under GNU/Linux. * Annotations @@ -1403,7 +1863,7 @@ read after argv processing. Solaris-2.0 !!! sparc-sun-solaris2 or sun4sol2 -Linux support i386-unknown-linux or linux +GNU/Linux support i386-unknown-linux or linux We are also including code to support the HP/PA running BSD and HPUX. This is almost guaranteed not to work, as we didn't have time to test or build it