What has changed in GDB?
(Organized release by release)
-*** Changes since GDB 5.0:
+*** Changes since GDB 5.3:
+
+* d10v `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.
+
+* 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 M32R/D w/simulator m32r-*-elf*
+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*-*-*
-* "info symbol" works on platforms which use COFF, ECOFF, XCOFF, and NLM.
+
+* 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.
+
+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.<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]}*,
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, the next release of GDB will have their sources
permanently REMOVED.
-* REMOVED configurations
+* 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:
-* 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
+``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.
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
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
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
projects / binutils.git / blobdiff