diff options
Diffstat (limited to 'contrib/gdb/gdb/NEWS')
| -rw-r--r-- | contrib/gdb/gdb/NEWS | 458 |
1 files changed, 455 insertions, 3 deletions
diff --git a/contrib/gdb/gdb/NEWS b/contrib/gdb/gdb/NEWS index e6aaba3..d7c0ad0 100644 --- a/contrib/gdb/gdb/NEWS +++ b/contrib/gdb/gdb/NEWS @@ -1,13 +1,465 @@ What has changed in GDB? (Organized release by release) +*** Changes since GDB 5.2: + +* 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. + +*** 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.<pid>). + +* 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 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 + +x86 FreeBSD before 2.2 i[3456]86*-freebsd{1,2.[01]}*, +Harris/CXUX m88k m88*-harris-cxux* +Most ns32k hosts and targets ns32k-*-mach3* ns32k-umax-* + ns32k-utek-sysv* ns32k-utek-* +TI TMS320C80 tic80-*-* +WDC 65816 w65-*-* +Ultracomputer (29K) running Sym1 a29k-nyu-sym1 a29k-*-kern* +PowerPC Solaris powerpcle-*-solaris* +PowerPC Windows NT powerpcle-*-cygwin32 +PowerPC Netware powerpc-*-netware* +SunOS 4.0.Xi on i386 i[3456]86-*-sunos* +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 N/A + +stuff.c (Program to stuff files into a specially prepared space in kdb) +kdb-start.c (Main loop for the standalone kernel debugger) + +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. + +* REMOVED configurations and files + +Altos 3068 m68*-altos-* +Convex c1-*-*, c2-*-* +Pyramid pyramid-*-* +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: + +* "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 +``version.in''. People creating GDB distributions should update the +contents of this file. + +* gdba.el deleted + +GUD support is now a standard part of the EMACS distribution. + +*** Changes in GDB 5.0: + +* Improved support for debugging FP programs on x86 targets + +Unified and much-improved support for debugging floating-point +programs on all x86 targets. In particular, ``info float'' now +displays the FP registers in the same format on all x86 targets, with +greater level of detail. + +* Improvements and bugfixes in hardware-assisted watchpoints + +It is now possible to watch array elements, struct members, and +bitfields with hardware-assisted watchpoints. Data-read watchpoints +on x86 targets no longer erroneously trigger when the address is +written. + +* Improvements in the native DJGPP version of GDB + +The distribution now includes all the scripts and auxiliary files +necessary to build the native DJGPP version on MS-DOS/MS-Windows +machines ``out of the box''. + +The DJGPP version can now debug programs that use signals. It is +possible to catch signals that happened in the debuggee, deliver +signals to it, interrupt it with Ctrl-C, etc. (Previously, a signal +would kill the program being debugged.) Programs that hook hardware +interrupts (keyboard, timer, etc.) can also be debugged. + +It is now possible to debug DJGPP programs that redirect their +standard handles or switch them to raw (as opposed to cooked) mode, or +even close them. The command ``run < foo > bar'' works as expected, +and ``info terminal'' reports useful information about the debuggee's +terminal, including raw/cooked mode, redirection, etc. + +The DJGPP version now uses termios functions for console I/O, which +enables debugging graphics programs. Interrupting GDB with Ctrl-C +also works. + +DOS-style file names with drive letters are now fully supported by +GDB. + +It is now possible to debug DJGPP programs that switch their working +directory. It is also possible to rerun the debuggee any number of +times without restarting GDB; thus, you can use the same setup, +breakpoints, etc. for many debugging sessions. + +* New native configurations + +ARM GNU/Linux arm*-*-linux* +PowerPC GNU/Linux powerpc-*-linux* + +* New targets + +Motorola MCore mcore-*-* +x86 VxWorks i[3456]86-*-vxworks* +PowerPC VxWorks powerpc-*-vxworks* +TI TMS320C80 tic80-*-* + +* OBSOLETE configurations + +Altos 3068 m68*-altos-* +Convex c1-*-*, c2-*-* +Pyramid pyramid-*-* +ARM RISCix arm-*-* (as host) +Tahoe tahoe-*-* + +Configurations that have been declared obsolete will be commented out, +but the code will be left in place. If there is no activity to revive +these configurations before the next release of GDB, the sources will +be permanently REMOVED. + +* Gould support removed + +Support for the Gould PowerNode and NP1 has been removed. + +* New features for SVR4 + +On SVR4 native platforms (such as Solaris), if you attach to a process +without first loading a symbol file, GDB will now attempt to locate and +load symbols from the running process's executable file. + +* Many C++ enhancements + +C++ support has been greatly improved. Overload resolution now works properly +in almost all cases. RTTI support is on the way. + +* Remote targets can connect to a sub-program + +A popen(3) style serial-device has been added. This device starts a +sub-process (such as a stand-alone simulator) and then communicates +with that. The sub-program to run is specified using the syntax +``|<program> <args>'' vis: + + (gdb) set remotedebug 1 + (gdb) target extended-remote |mn10300-elf-sim program-args + +* MIPS 64 remote protocol + +A long standing bug in the mips64 remote protocol where by GDB +expected certain 32 bit registers (ex SR) to be transfered as 32 +instead of 64 bits has been fixed. + +The command ``set remote-mips64-transfers-32bit-regs on'' has been +added to provide backward compatibility with older versions of GDB. + +* ``set remotebinarydownload'' replaced by ``set remote X-packet'' + +The command ``set remotebinarydownload'' command has been replaced by +``set remote X-packet''. Other commands in ``set remote'' family +include ``set remote P-packet''. + +* Breakpoint commands accept ranges. + +The breakpoint commands ``enable'', ``disable'', and ``delete'' now +accept a range of breakpoints, e.g. ``5-7''. The tracepoint command +``tracepoint passcount'' also accepts a range of tracepoints. + +* ``apropos'' command added. + +The ``apropos'' command searches through command names and +documentation strings, printing out matches, making it much easier to +try to find a command that does what you are looking for. + +* New MI interface + +A new machine oriented interface (MI) has been added to GDB. This +interface is designed for debug environments running GDB as a separate +process. This is part of the long term libGDB project. See the +"GDB/MI" chapter of the GDB manual for further information. It can be +enabled by configuring with: + + .../configure --enable-gdbmi + *** Changes in GDB-4.18: * New native configurations 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 @@ -568,7 +1020,7 @@ 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 @@ -1072,7 +1524,7 @@ 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 |
