X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2FNEWS;h=4ce063e0794b4ae31a0a308b52a441cedc5a8a23;hb=b01ab485c7bee5c75a49211ab3422dfbd6dce474;hp=22a43994cbe9a183f6d4954dcda1c758cb9ef307;hpb=def902788f7289b932f947966b4a64ed65a2dbd8;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index 22a43994cb..4ce063e079 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,24 +1,276 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 5.0: +*** Changes since GDB 5.3: -* "info symbol" works on platforms which use COFF, ECOFF, XCOFF, and NLM. +* Default MI syntax changed to "mi2". -* The MI enabled. +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 sepcifying the option "-i=mi1". + +Support for the original "mi0" syntax (included in GDB 5.0) has been +removed. + +* REMOVED configurations and files + +V850EA ISA + +* 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: + +* ``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*-*-* -The new machine oriented interface (MI) introduced in GDB 5.0 has been -revised and enabled. + +* 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 GNU/Linux sparc64-*-linux* * OBSOLETE configurations and files @@ -54,12 +306,144 @@ ARM RISCix arm-*-* (as host) Tahoe tahoe-*-* ser-ocd.c *-*-* +* GDB has been converted to ISO C. + +GDB's source code has been converted to ISO C. In particular, the +sources are fully protoized, and rely on standard headers being +present. + * Other news: -* All MIPS configurations are multi-arched. +* "info symbol" works on platforms which use COFF, ECOFF, XCOFF, and NLM. + +* The MI enabled by default. + +The new machine oriented interface (MI) introduced in GDB 5.0 has been +revised and enabled by default. Packages which use GDB as a debugging +engine behind a UI or another front end are encouraged to switch to +using the GDB/MI interface, instead of the old annotations interface +which is now deprecated. + +* Support for debugging Pascal programs. + +GDB now includes support for debugging Pascal programs. The following +main features are supported: + + - Pascal-specific data types such as sets; + + - automatic recognition of Pascal sources based on file-name + extension; + + - Pascal-style display of data types, variables, and functions; + + - a Pascal expression parser. + +However, some important features are not yet supported. + + - Pascal string operations are not supported at all; + + - there are some problems with boolean types; + + - Pascal type hexadecimal constants are not supported + because they conflict with the internal variables format; + + - support for Pascal objects and classes is not full yet; + + - unlike Pascal, GDB is case-sensitive for symbol names. + +* Changes in completion. + +Commands such as `shell', `run' and `set args', which pass arguments +to inferior programs, now complete on file names, similar to what +users expect at the shell prompt. + +Commands which accept locations, such as `disassemble', `print', +`breakpoint', `until', etc. now complete on filenames as well as +program symbols. Thus, if you type "break foob TAB", and the source +files linked into the programs include `foobar.c', that file name will +be one of the candidates for completion. However, file names are not +considered for completion after you typed a colon that delimits a file +name from a name of a function in that file, as in "break foo.c:bar". + +`set demangle-style' completes on available demangling styles. + +* New platform-independent commands: + +It is now possible to define a post-hook for a command as well as a +hook that runs before the command. For more details, see the +documentation of `hookpost' in the GDB manual. + +* Changes in GNU/Linux native debugging. + +Support for debugging multi-threaded programs has been completely +revised for all platforms except m68k and sparc. You can now debug as +many threads as your system allows you to have. + +Attach/detach is supported for multi-threaded programs. + +Support for SSE registers was added for x86. This doesn't work for +multi-threaded programs though. + +* Changes in MIPS configurations. Multi-arch support is enabled for all MIPS configurations. +GDB can now be built as native debugger on SGI Irix 6.x systems for +debugging n32 executables. (Debugging 64-bit executables is not yet +supported.) + +* Unified support for hardware watchpoints in all x86 configurations. + +Most (if not all) native x86 configurations support hardware-assisted +breakpoints and watchpoints in a unified manner. This support +implements debug register sharing between watchpoints, which allows to +put a virtually infinite number of watchpoints on the same address, +and also supports watching regions up to 16 bytes with several debug +registers. + +The new maintenance command `maintenance show-debug-regs' toggles +debugging print-outs in functions that insert, remove, and test +watchpoints and hardware breakpoints. + +* Changes in the DJGPP native configuration. + +New command ``info dos sysinfo'' displays assorted information about +the CPU, OS, memory, and DPMI server. + +New commands ``info dos gdt'', ``info dos ldt'', and ``info dos idt'' +display information about segment descriptors stored in GDT, LDT, and +IDT. + +New commands ``info dos pde'' and ``info dos pte'' display entries +from Page Directory and Page Tables (for now works with CWSDPMI only). +New command ``info dos address-pte'' displays the Page Table entry for +a given linear address. + +GDB can now pass command lines longer than 126 characters to the +program being debugged (requires an update to the libdbg.a library +which is part of the DJGPP development kit). + +DWARF2 debug info is now supported. + +It is now possible to `step' and `next' through calls to `longjmp'. + +* Changes in documentation. + +All GDB documentation was converted to GFDL, the GNU Free +Documentation License. + +Tracepoints-related commands are now fully documented in the GDB +manual. + +TUI, the Text-mode User Interface, is now documented in the manual. + +Tracepoints-related commands are now fully documented in the GDB +manual. + +The "GDB Internals" manual now has an index. It also includes +documentation of `ui_out' functions, GDB coding standards, x86 +hardware watchpoints, and memory region attributes. + * GDB's version number moved to ``version.in'' The Makefile variable VERSION has been replaced by the file @@ -209,7 +593,7 @@ 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 @@ -770,7 +1154,7 @@ 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 @@ -1274,7 +1658,7 @@ 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