Commit | Line | Data |
---|---|---|
c906108c SS |
1 | What has changed in GDB? |
2 | (Organized release by release) | |
3 | ||
37057839 AC |
4 | *** Changes since GDB 5.2: |
5 | ||
6da02953 DJ |
6 | * ``gdbserver'' now supports multithreaded applications on some targets |
7 | ||
8 | Support for multithreaded applications using LinuxThreads has been added | |
9 | for arm*-*-linux*, i[3456]86-*-linux*, mips*-*-linux*, powerpc*-*-linux*, | |
10 | and sh*-*-linux*. | |
11 | ||
e0e9281e JB |
12 | * GDB now supports C/C++ preprocessor macros. |
13 | ||
14 | GDB now expands preprocessor macro invocations in C/C++ expressions, | |
15 | and provides various commands for showing macro definitions and how | |
16 | they expand. | |
17 | ||
18 | Most compilers don't include information about macros in the debugging | |
19 | information by default. In GCC 3.1, for example, you need to compile | |
20 | your program with the options `-gdwarf-2 -g3'. If the macro | |
21 | information is present in the executable, GDB will read it. | |
22 | ||
23 | Here are the new commands for working with macros: | |
24 | ||
25 | ** macro expand EXPRESSION | |
26 | ||
27 | Expand any macro invocations in expression, and show the result. | |
28 | ||
29 | ** show macro MACRO-NAME | |
30 | ||
31 | Show the definition of the macro named MACRO-NAME, and where it was | |
32 | defined. | |
33 | ||
2250ee0c CV |
34 | * Multi-arched targets. |
35 | ||
6e3ba3b8 JT |
36 | DEC Alpha (partial) alpha*-*-* |
37 | DEC VAX (partial) vax-*-* | |
2250ee0c | 38 | NEC V850 v850-*-* |
6e3ba3b8 | 39 | National Semiconductor NS32000 (partial) ns32k-*-* |
a1789893 GS |
40 | Motorola 68000 (partial) m68k-*-* |
41 | Motorola MCORE mcore-*-* | |
2250ee0c | 42 | |
cd9bfe15 | 43 | * New targets. |
e33ce519 TR |
44 | |
45 | Atmel AVR avr*-*-* | |
456f8b9d DB |
46 | Fujitsu FRV architecture added by Red Hat frv*-*-* |
47 | ||
e33ce519 | 48 | |
da8ca43d JT |
49 | * New native configurations |
50 | ||
51 | Alpha NetBSD alpha*-*-netbsd* | |
029923d4 | 52 | SH NetBSD sh*-*-netbsdelf* |
45888261 | 53 | MIPS NetBSD mips*-*-netbsd* |
9ce5c36a | 54 | UltraSPARC NetBSD sparc64-*-netbsd* |
da8ca43d | 55 | |
cd9bfe15 AC |
56 | * OBSOLETE configurations and files |
57 | ||
58 | Configurations that have been declared obsolete in this release have | |
59 | been commented out. Unless there is activity to revive these | |
60 | configurations, the next release of GDB will have their sources | |
61 | permanently REMOVED. | |
62 | ||
92eb23c5 | 63 | Mitsubishi D30V d30v-*-* |
a99a9e1b | 64 | OS/9000 i[34]86-*-os9k |
7a3085c1 | 65 | Fujitsu FR30 fr30-*-elf* |
92eb23c5 | 66 | |
cd9bfe15 AC |
67 | * REMOVED configurations and files |
68 | ||
69 | AMD 29k family via UDI a29k-amd-udi, udi29k | |
70 | A29K VxWorks a29k-*-vxworks | |
71 | AMD 29000 embedded, using EBMON a29k-none-none | |
72 | AMD 29000 embedded with COFF a29k-none-coff | |
73 | AMD 29000 embedded with a.out a29k-none-aout | |
74 | ||
75 | testsuite/gdb.hp/gdb.threads-hp/ directory | |
76 | ||
20f01a46 DH |
77 | * New command "set max-user-call-depth <nnn>" |
78 | ||
79 | This command allows the user to limit the call depth of user-defined | |
80 | commands. The default is 1024. | |
81 | ||
a5941fbf MK |
82 | * Changes in FreeBSD/i386 native debugging. |
83 | ||
84 | Support for the "generate-core-file" has been added. | |
85 | ||
89743e04 MS |
86 | * New commands "dump", "append", and "restore". |
87 | ||
88 | These commands allow data to be copied from target memory | |
89 | to a bfd-format or binary file (dump and append), and back | |
90 | from a file into memory (restore). | |
37057839 AC |
91 | |
92 | *** Changes in GDB 5.2: | |
eb7cedd9 | 93 | |
1a703748 MS |
94 | * New command "set trust-readonly-sections on[off]". |
95 | ||
96 | This command is a hint that tells gdb that read-only sections | |
97 | really are read-only (ie. that their contents will not change). | |
98 | In this mode, gdb will go to the object file rather than the | |
99 | target to read memory from read-only sections (such as ".text"). | |
100 | This can be a significant performance improvement on some | |
101 | (notably embedded) targets. | |
102 | ||
cefd4ef5 MS |
103 | * New command "generate-core-file" (or "gcore"). |
104 | ||
55241689 AC |
105 | This new gdb command allows the user to drop a core file of the child |
106 | process state at any time. So far it's been implemented only for | |
107 | GNU/Linux and Solaris, but should be relatively easily ported to other | |
108 | hosts. Argument is core file name (defaults to core.<pid>). | |
cefd4ef5 | 109 | |
352ed7b4 MS |
110 | * New command line option |
111 | ||
112 | GDB now accepts --pid or -p followed by a process id. | |
113 | ||
114 | * Change in command line behavior -- corefiles vs. process ids. | |
115 | ||
116 | There is a subtle behavior in the way in which GDB handles | |
117 | command line arguments. The first non-flag argument is always | |
118 | a program to debug, but the second non-flag argument may either | |
119 | be a corefile or a process id. Previously, GDB would attempt to | |
120 | open the second argument as a corefile, and if that failed, would | |
121 | issue a superfluous error message and then attempt to attach it as | |
122 | a process. Now, if the second argument begins with a non-digit, | |
123 | it will be treated as a corefile. If it begins with a digit, | |
124 | GDB will attempt to attach it as a process, and if no such process | |
125 | is found, will then attempt to open it as a corefile. | |
126 | ||
fe419ffc RE |
127 | * Changes in ARM configurations. |
128 | ||
129 | Multi-arch support is enabled for all ARM configurations. The ARM/NetBSD | |
130 | configuration is fully multi-arch. | |
131 | ||
eb7cedd9 MK |
132 | * New native configurations |
133 | ||
fe419ffc | 134 | ARM NetBSD arm*-*-netbsd* |
eb7cedd9 | 135 | x86 OpenBSD i[3456]86-*-openbsd* |
55241689 | 136 | AMD x86-64 running GNU/Linux x86_64-*-linux-* |
768f0842 | 137 | Sparc64 running FreeBSD sparc64-*-freebsd* |
eb7cedd9 | 138 | |
c9f63e6b CV |
139 | * New targets |
140 | ||
141 | Sanyo XStormy16 xstormy16-elf | |
142 | ||
9b4ff276 AC |
143 | * OBSOLETE configurations and files |
144 | ||
145 | Configurations that have been declared obsolete in this release have | |
146 | been commented out. Unless there is activity to revive these | |
147 | configurations, the next release of GDB will have their sources | |
148 | permanently REMOVED. | |
149 | ||
150 | AMD 29k family via UDI a29k-amd-udi, udi29k | |
151 | A29K VxWorks a29k-*-vxworks | |
152 | AMD 29000 embedded, using EBMON a29k-none-none | |
153 | AMD 29000 embedded with COFF a29k-none-coff | |
154 | AMD 29000 embedded with a.out a29k-none-aout | |
155 | ||
b4ceaee6 | 156 | testsuite/gdb.hp/gdb.threads-hp/ directory |
9b4ff276 | 157 | |
e2caac18 AC |
158 | * REMOVED configurations and files |
159 | ||
160 | TI TMS320C80 tic80-*-* | |
7bc65f05 | 161 | WDC 65816 w65-*-* |
7768dd6c AC |
162 | PowerPC Solaris powerpcle-*-solaris* |
163 | PowerPC Windows NT powerpcle-*-cygwin32 | |
164 | PowerPC Netware powerpc-*-netware* | |
5e734e1f | 165 | Harris/CXUX m88k m88*-harris-cxux* |
1406caf7 AC |
166 | Most ns32k hosts and targets ns32k-*-mach3* ns32k-umax-* |
167 | ns32k-utek-sysv* ns32k-utek-* | |
7e24f0b1 | 168 | SunOS 4.0.Xi on i386 i[3456]86-*-sunos* |
9b567150 | 169 | Ultracomputer (29K) running Sym1 a29k-nyu-sym1 a29k-*-kern* |
3680c638 AC |
170 | Sony NEWS (68K) running NEWSOS 3.x m68*-sony-sysv news |
171 | ISI Optimum V (3.05) under 4.3bsd. m68*-isi-* | |
a752853e | 172 | Apple Macintosh (MPW) host and target N/A host, powerpc-*-macos* |
e2caac18 | 173 | |
c2a727fa TT |
174 | * Changes to command line processing |
175 | ||
176 | The new `--args' feature can be used to specify command-line arguments | |
177 | for the inferior from gdb's command line. | |
178 | ||
467d8519 TT |
179 | * Changes to key bindings |
180 | ||
181 | There is a new `operate-and-get-next' function bound to `C-o'. | |
182 | ||
7072a954 AC |
183 | *** Changes in GDB 5.1.1 |
184 | ||
185 | Fix compile problem on DJGPP. | |
186 | ||
187 | Fix a problem with floating-point registers on the i386 being | |
188 | corrupted. | |
189 | ||
190 | Fix to stop GDB crashing on .debug_str debug info. | |
191 | ||
192 | Numerous documentation fixes. | |
193 | ||
194 | Numerous testsuite fixes. | |
195 | ||
34f47bc4 | 196 | *** Changes in GDB 5.1: |
139760b7 MK |
197 | |
198 | * New native configurations | |
199 | ||
200 | Alpha FreeBSD alpha*-*-freebsd* | |
201 | x86 FreeBSD 3.x and 4.x i[3456]86*-freebsd[34]* | |
55241689 | 202 | MIPS GNU/Linux mips*-*-linux* |
e23194cb EZ |
203 | MIPS SGI Irix 6.x mips*-sgi-irix6* |
204 | ia64 AIX ia64-*-aix* | |
55241689 | 205 | s390 and s390x GNU/Linux {s390,s390x}-*-linux* |
139760b7 | 206 | |
bf64bfd6 AC |
207 | * New targets |
208 | ||
def90278 | 209 | Motorola 68HC11 and 68HC12 m68hc11-elf |
24be5c34 | 210 | CRIS cris-axis |
55241689 | 211 | UltraSparc running GNU/Linux sparc64-*-linux* |
def90278 | 212 | |
17e78a56 | 213 | * OBSOLETE configurations and files |
bf64bfd6 AC |
214 | |
215 | x86 FreeBSD before 2.2 i[3456]86*-freebsd{1,2.[01]}*, | |
9b9c068d | 216 | Harris/CXUX m88k m88*-harris-cxux* |
bb19ff3b AC |
217 | Most ns32k hosts and targets ns32k-*-mach3* ns32k-umax-* |
218 | ns32k-utek-sysv* ns32k-utek-* | |
76f4ea53 AC |
219 | TI TMS320C80 tic80-*-* |
220 | WDC 65816 w65-*-* | |
4a1968f4 | 221 | Ultracomputer (29K) running Sym1 a29k-nyu-sym1 a29k-*-kern* |
1b2b2c16 AC |
222 | PowerPC Solaris powerpcle-*-solaris* |
223 | PowerPC Windows NT powerpcle-*-cygwin32 | |
224 | PowerPC Netware powerpc-*-netware* | |
24f89b68 | 225 | SunOS 4.0.Xi on i386 i[3456]86-*-sunos* |
514e603d AC |
226 | Sony NEWS (68K) running NEWSOS 3.x m68*-sony-sysv news |
227 | ISI Optimum V (3.05) under 4.3bsd. m68*-isi-* | |
d036b4d9 | 228 | Apple Macintosh (MPW) host N/A |
bf64bfd6 | 229 | |
17e78a56 AC |
230 | stuff.c (Program to stuff files into a specially prepared space in kdb) |
231 | kdb-start.c (Main loop for the standalone kernel debugger) | |
232 | ||
7fcca85b AC |
233 | Configurations that have been declared obsolete in this release have |
234 | been commented out. Unless there is activity to revive these | |
235 | configurations, the next release of GDB will have their sources | |
236 | permanently REMOVED. | |
237 | ||
a196c81c | 238 | * REMOVED configurations and files |
7fcca85b AC |
239 | |
240 | Altos 3068 m68*-altos-* | |
241 | Convex c1-*-*, c2-*-* | |
242 | Pyramid pyramid-*-* | |
243 | ARM RISCix arm-*-* (as host) | |
244 | Tahoe tahoe-*-* | |
a196c81c | 245 | ser-ocd.c *-*-* |
bf64bfd6 | 246 | |
6d6b80e5 | 247 | * GDB has been converted to ISO C. |
e23194cb | 248 | |
6d6b80e5 | 249 | GDB's source code has been converted to ISO C. In particular, the |
e23194cb EZ |
250 | sources are fully protoized, and rely on standard headers being |
251 | present. | |
252 | ||
bf64bfd6 AC |
253 | * Other news: |
254 | ||
e23194cb EZ |
255 | * "info symbol" works on platforms which use COFF, ECOFF, XCOFF, and NLM. |
256 | ||
257 | * The MI enabled by default. | |
258 | ||
259 | The new machine oriented interface (MI) introduced in GDB 5.0 has been | |
260 | revised and enabled by default. Packages which use GDB as a debugging | |
261 | engine behind a UI or another front end are encouraged to switch to | |
262 | using the GDB/MI interface, instead of the old annotations interface | |
263 | which is now deprecated. | |
264 | ||
265 | * Support for debugging Pascal programs. | |
266 | ||
267 | GDB now includes support for debugging Pascal programs. The following | |
268 | main features are supported: | |
269 | ||
270 | - Pascal-specific data types such as sets; | |
271 | ||
272 | - automatic recognition of Pascal sources based on file-name | |
273 | extension; | |
274 | ||
275 | - Pascal-style display of data types, variables, and functions; | |
276 | ||
277 | - a Pascal expression parser. | |
278 | ||
279 | However, some important features are not yet supported. | |
280 | ||
281 | - Pascal string operations are not supported at all; | |
282 | ||
283 | - there are some problems with boolean types; | |
284 | ||
285 | - Pascal type hexadecimal constants are not supported | |
286 | because they conflict with the internal variables format; | |
287 | ||
288 | - support for Pascal objects and classes is not full yet; | |
289 | ||
290 | - unlike Pascal, GDB is case-sensitive for symbol names. | |
291 | ||
292 | * Changes in completion. | |
293 | ||
294 | Commands such as `shell', `run' and `set args', which pass arguments | |
295 | to inferior programs, now complete on file names, similar to what | |
296 | users expect at the shell prompt. | |
297 | ||
298 | Commands which accept locations, such as `disassemble', `print', | |
299 | `breakpoint', `until', etc. now complete on filenames as well as | |
300 | program symbols. Thus, if you type "break foob TAB", and the source | |
301 | files linked into the programs include `foobar.c', that file name will | |
302 | be one of the candidates for completion. However, file names are not | |
303 | considered for completion after you typed a colon that delimits a file | |
304 | name from a name of a function in that file, as in "break foo.c:bar". | |
305 | ||
306 | `set demangle-style' completes on available demangling styles. | |
307 | ||
308 | * New platform-independent commands: | |
309 | ||
310 | It is now possible to define a post-hook for a command as well as a | |
311 | hook that runs before the command. For more details, see the | |
312 | documentation of `hookpost' in the GDB manual. | |
313 | ||
314 | * Changes in GNU/Linux native debugging. | |
315 | ||
d7275149 MK |
316 | Support for debugging multi-threaded programs has been completely |
317 | revised for all platforms except m68k and sparc. You can now debug as | |
318 | many threads as your system allows you to have. | |
319 | ||
e23194cb EZ |
320 | Attach/detach is supported for multi-threaded programs. |
321 | ||
d7275149 MK |
322 | Support for SSE registers was added for x86. This doesn't work for |
323 | multi-threaded programs though. | |
e23194cb EZ |
324 | |
325 | * Changes in MIPS configurations. | |
bf64bfd6 AC |
326 | |
327 | Multi-arch support is enabled for all MIPS configurations. | |
328 | ||
e23194cb EZ |
329 | GDB can now be built as native debugger on SGI Irix 6.x systems for |
330 | debugging n32 executables. (Debugging 64-bit executables is not yet | |
331 | supported.) | |
332 | ||
333 | * Unified support for hardware watchpoints in all x86 configurations. | |
334 | ||
335 | Most (if not all) native x86 configurations support hardware-assisted | |
336 | breakpoints and watchpoints in a unified manner. This support | |
337 | implements debug register sharing between watchpoints, which allows to | |
338 | put a virtually infinite number of watchpoints on the same address, | |
339 | and also supports watching regions up to 16 bytes with several debug | |
340 | registers. | |
341 | ||
342 | The new maintenance command `maintenance show-debug-regs' toggles | |
343 | debugging print-outs in functions that insert, remove, and test | |
344 | watchpoints and hardware breakpoints. | |
345 | ||
346 | * Changes in the DJGPP native configuration. | |
347 | ||
348 | New command ``info dos sysinfo'' displays assorted information about | |
349 | the CPU, OS, memory, and DPMI server. | |
350 | ||
351 | New commands ``info dos gdt'', ``info dos ldt'', and ``info dos idt'' | |
352 | display information about segment descriptors stored in GDT, LDT, and | |
353 | IDT. | |
354 | ||
355 | New commands ``info dos pde'' and ``info dos pte'' display entries | |
356 | from Page Directory and Page Tables (for now works with CWSDPMI only). | |
357 | New command ``info dos address-pte'' displays the Page Table entry for | |
358 | a given linear address. | |
359 | ||
360 | GDB can now pass command lines longer than 126 characters to the | |
361 | program being debugged (requires an update to the libdbg.a library | |
362 | which is part of the DJGPP development kit). | |
363 | ||
364 | DWARF2 debug info is now supported. | |
365 | ||
6c56c069 EZ |
366 | It is now possible to `step' and `next' through calls to `longjmp'. |
367 | ||
e23194cb EZ |
368 | * Changes in documentation. |
369 | ||
370 | All GDB documentation was converted to GFDL, the GNU Free | |
371 | Documentation License. | |
372 | ||
373 | Tracepoints-related commands are now fully documented in the GDB | |
374 | manual. | |
375 | ||
376 | TUI, the Text-mode User Interface, is now documented in the manual. | |
377 | ||
378 | Tracepoints-related commands are now fully documented in the GDB | |
379 | manual. | |
380 | ||
381 | The "GDB Internals" manual now has an index. It also includes | |
382 | documentation of `ui_out' functions, GDB coding standards, x86 | |
383 | hardware watchpoints, and memory region attributes. | |
384 | ||
5d6640b1 AC |
385 | * GDB's version number moved to ``version.in'' |
386 | ||
387 | The Makefile variable VERSION has been replaced by the file | |
388 | ``version.in''. People creating GDB distributions should update the | |
389 | contents of this file. | |
390 | ||
1a1d8446 AC |
391 | * gdba.el deleted |
392 | ||
393 | GUD support is now a standard part of the EMACS distribution. | |
139760b7 | 394 | |
9debab2f | 395 | *** Changes in GDB 5.0: |
7a292a7a | 396 | |
c63ce875 EZ |
397 | * Improved support for debugging FP programs on x86 targets |
398 | ||
399 | Unified and much-improved support for debugging floating-point | |
400 | programs on all x86 targets. In particular, ``info float'' now | |
401 | displays the FP registers in the same format on all x86 targets, with | |
402 | greater level of detail. | |
403 | ||
404 | * Improvements and bugfixes in hardware-assisted watchpoints | |
405 | ||
406 | It is now possible to watch array elements, struct members, and | |
407 | bitfields with hardware-assisted watchpoints. Data-read watchpoints | |
408 | on x86 targets no longer erroneously trigger when the address is | |
409 | written. | |
410 | ||
411 | * Improvements in the native DJGPP version of GDB | |
412 | ||
413 | The distribution now includes all the scripts and auxiliary files | |
414 | necessary to build the native DJGPP version on MS-DOS/MS-Windows | |
415 | machines ``out of the box''. | |
416 | ||
417 | The DJGPP version can now debug programs that use signals. It is | |
418 | possible to catch signals that happened in the debuggee, deliver | |
419 | signals to it, interrupt it with Ctrl-C, etc. (Previously, a signal | |
420 | would kill the program being debugged.) Programs that hook hardware | |
421 | interrupts (keyboard, timer, etc.) can also be debugged. | |
422 | ||
423 | It is now possible to debug DJGPP programs that redirect their | |
424 | standard handles or switch them to raw (as opposed to cooked) mode, or | |
425 | even close them. The command ``run < foo > bar'' works as expected, | |
426 | and ``info terminal'' reports useful information about the debuggee's | |
427 | terminal, including raw/cooked mode, redirection, etc. | |
428 | ||
429 | The DJGPP version now uses termios functions for console I/O, which | |
430 | enables debugging graphics programs. Interrupting GDB with Ctrl-C | |
431 | also works. | |
432 | ||
433 | DOS-style file names with drive letters are now fully supported by | |
434 | GDB. | |
435 | ||
436 | It is now possible to debug DJGPP programs that switch their working | |
437 | directory. It is also possible to rerun the debuggee any number of | |
438 | times without restarting GDB; thus, you can use the same setup, | |
439 | breakpoints, etc. for many debugging sessions. | |
440 | ||
ed9a39eb JM |
441 | * New native configurations |
442 | ||
443 | ARM GNU/Linux arm*-*-linux* | |
afc05dd4 | 444 | PowerPC GNU/Linux powerpc-*-linux* |
ed9a39eb | 445 | |
7a292a7a SS |
446 | * New targets |
447 | ||
96baa820 | 448 | Motorola MCore mcore-*-* |
adf40b2e JM |
449 | x86 VxWorks i[3456]86-*-vxworks* |
450 | PowerPC VxWorks powerpc-*-vxworks* | |
7a292a7a SS |
451 | TI TMS320C80 tic80-*-* |
452 | ||
085dd6e6 JM |
453 | * OBSOLETE configurations |
454 | ||
455 | Altos 3068 m68*-altos-* | |
456 | Convex c1-*-*, c2-*-* | |
9846de1b | 457 | Pyramid pyramid-*-* |
ed9a39eb | 458 | ARM RISCix arm-*-* (as host) |
104c1213 | 459 | Tahoe tahoe-*-* |
7a292a7a | 460 | |
9debab2f AC |
461 | Configurations that have been declared obsolete will be commented out, |
462 | but the code will be left in place. If there is no activity to revive | |
463 | these configurations before the next release of GDB, the sources will | |
464 | be permanently REMOVED. | |
465 | ||
5330533d SS |
466 | * Gould support removed |
467 | ||
468 | Support for the Gould PowerNode and NP1 has been removed. | |
469 | ||
bc9e5bbf AC |
470 | * New features for SVR4 |
471 | ||
472 | On SVR4 native platforms (such as Solaris), if you attach to a process | |
473 | without first loading a symbol file, GDB will now attempt to locate and | |
474 | load symbols from the running process's executable file. | |
475 | ||
476 | * Many C++ enhancements | |
477 | ||
478 | C++ support has been greatly improved. Overload resolution now works properly | |
479 | in almost all cases. RTTI support is on the way. | |
480 | ||
adf40b2e JM |
481 | * Remote targets can connect to a sub-program |
482 | ||
483 | A popen(3) style serial-device has been added. This device starts a | |
484 | sub-process (such as a stand-alone simulator) and then communicates | |
485 | with that. The sub-program to run is specified using the syntax | |
486 | ``|<program> <args>'' vis: | |
487 | ||
488 | (gdb) set remotedebug 1 | |
489 | (gdb) target extended-remote |mn10300-elf-sim program-args | |
490 | ||
43e526b9 JM |
491 | * MIPS 64 remote protocol |
492 | ||
493 | A long standing bug in the mips64 remote protocol where by GDB | |
494 | expected certain 32 bit registers (ex SR) to be transfered as 32 | |
495 | instead of 64 bits has been fixed. | |
496 | ||
497 | The command ``set remote-mips64-transfers-32bit-regs on'' has been | |
498 | added to provide backward compatibility with older versions of GDB. | |
499 | ||
96baa820 JM |
500 | * ``set remotebinarydownload'' replaced by ``set remote X-packet'' |
501 | ||
502 | The command ``set remotebinarydownload'' command has been replaced by | |
503 | ``set remote X-packet''. Other commands in ``set remote'' family | |
504 | include ``set remote P-packet''. | |
505 | ||
11cf8741 JM |
506 | * Breakpoint commands accept ranges. |
507 | ||
508 | The breakpoint commands ``enable'', ``disable'', and ``delete'' now | |
509 | accept a range of breakpoints, e.g. ``5-7''. The tracepoint command | |
510 | ``tracepoint passcount'' also accepts a range of tracepoints. | |
511 | ||
7876dd43 DB |
512 | * ``apropos'' command added. |
513 | ||
514 | The ``apropos'' command searches through command names and | |
515 | documentation strings, printing out matches, making it much easier to | |
516 | try to find a command that does what you are looking for. | |
517 | ||
bc9e5bbf AC |
518 | * New MI interface |
519 | ||
520 | A new machine oriented interface (MI) has been added to GDB. This | |
521 | interface is designed for debug environments running GDB as a separate | |
7162c0ca EZ |
522 | process. This is part of the long term libGDB project. See the |
523 | "GDB/MI" chapter of the GDB manual for further information. It can be | |
524 | enabled by configuring with: | |
bc9e5bbf AC |
525 | |
526 | .../configure --enable-gdbmi | |
527 | ||
c906108c SS |
528 | *** Changes in GDB-4.18: |
529 | ||
530 | * New native configurations | |
531 | ||
532 | HP-UX 10.20 hppa*-*-hpux10.20 | |
533 | HP-UX 11.x hppa*-*-hpux11.0* | |
55241689 | 534 | M68K GNU/Linux m68*-*-linux* |
c906108c SS |
535 | |
536 | * New targets | |
537 | ||
538 | Fujitsu FR30 fr30-*-elf* | |
539 | Intel StrongARM strongarm-*-* | |
540 | Mitsubishi D30V d30v-*-* | |
541 | ||
542 | * OBSOLETE configurations | |
543 | ||
544 | Gould PowerNode, NP1 np1-*-*, pn-*-* | |
545 | ||
546 | Configurations that have been declared obsolete will be commented out, | |
547 | but the code will be left in place. If there is no activity to revive | |
548 | these configurations before the next release of GDB, the sources will | |
549 | be permanently REMOVED. | |
550 | ||
551 | * ANSI/ISO C | |
552 | ||
553 | As a compatibility experiment, GDB's source files buildsym.h and | |
554 | buildsym.c have been converted to pure standard C, no longer | |
555 | containing any K&R compatibility code. We believe that all systems in | |
556 | use today either come with a standard C compiler, or have a GCC port | |
557 | available. If this is not true, please report the affected | |
558 | configuration to bug-gdb@gnu.org immediately. See the README file for | |
559 | information about getting a standard C compiler if you don't have one | |
560 | already. | |
561 | ||
562 | * Readline 2.2 | |
563 | ||
564 | GDB now uses readline 2.2. | |
565 | ||
566 | * set extension-language | |
567 | ||
568 | You can now control the mapping between filename extensions and source | |
569 | languages by using the `set extension-language' command. For instance, | |
570 | you can ask GDB to treat .c files as C++ by saying | |
571 | set extension-language .c c++ | |
572 | The command `info extensions' lists all of the recognized extensions | |
573 | and their associated languages. | |
574 | ||
575 | * Setting processor type for PowerPC and RS/6000 | |
576 | ||
577 | When GDB is configured for a powerpc*-*-* or an rs6000*-*-* target, | |
578 | you can use the `set processor' command to specify what variant of the | |
579 | PowerPC family you are debugging. The command | |
580 | ||
581 | set processor NAME | |
582 | ||
583 | sets the PowerPC/RS6000 variant to NAME. GDB knows about the | |
584 | following PowerPC and RS6000 variants: | |
585 | ||
586 | ppc-uisa PowerPC UISA - a PPC processor as viewed by user-level code | |
587 | rs6000 IBM RS6000 ("POWER") architecture, user-level view | |
588 | 403 IBM PowerPC 403 | |
589 | 403GC IBM PowerPC 403GC | |
590 | 505 Motorola PowerPC 505 | |
591 | 860 Motorola PowerPC 860 or 850 | |
592 | 601 Motorola PowerPC 601 | |
593 | 602 Motorola PowerPC 602 | |
594 | 603 Motorola/IBM PowerPC 603 or 603e | |
595 | 604 Motorola PowerPC 604 or 604e | |
596 | 750 Motorola/IBM PowerPC 750 or 750 | |
597 | ||
598 | At the moment, this command just tells GDB what to name the | |
599 | special-purpose processor registers. Since almost all the affected | |
600 | registers are inaccessible to user-level programs, this command is | |
601 | only useful for remote debugging in its present form. | |
602 | ||
603 | * HP-UX support | |
604 | ||
605 | Thanks to a major code donation from Hewlett-Packard, GDB now has much | |
606 | more extensive support for HP-UX. Added features include shared | |
607 | library support, kernel threads and hardware watchpoints for 11.00, | |
608 | support for HP's ANSI C and C++ compilers, and a compatibility mode | |
609 | for xdb and dbx commands. | |
610 | ||
611 | * Catchpoints | |
612 | ||
613 | HP's donation includes the new concept of catchpoints, which is a | |
614 | generalization of the old catch command. On HP-UX, it is now possible | |
615 | to catch exec, fork, and vfork, as well as library loading. | |
616 | ||
617 | This means that the existing catch command has changed; its first | |
618 | argument now specifies the type of catch to be set up. See the | |
619 | output of "help catch" for a list of catchpoint types. | |
620 | ||
621 | * Debugging across forks | |
622 | ||
623 | On HP-UX, you can choose which process to debug when a fork() happens | |
624 | in the inferior. | |
625 | ||
626 | * TUI | |
627 | ||
628 | HP has donated a curses-based terminal user interface (TUI). To get | |
629 | it, build with --enable-tui. Although this can be enabled for any | |
630 | configuration, at present it only works for native HP debugging. | |
631 | ||
632 | * GDB remote protocol additions | |
633 | ||
634 | A new protocol packet 'X' that writes binary data is now available. | |
635 | Default behavior is to try 'X', then drop back to 'M' if the stub | |
636 | fails to respond. The settable variable `remotebinarydownload' | |
637 | allows explicit control over the use of 'X'. | |
638 | ||
639 | For 64-bit targets, the memory packets ('M' and 'm') can now contain a | |
640 | full 64-bit address. The command | |
641 | ||
642 | set remoteaddresssize 32 | |
643 | ||
644 | can be used to revert to the old behaviour. For existing remote stubs | |
645 | the change should not be noticed, as the additional address information | |
646 | will be discarded. | |
647 | ||
648 | In order to assist in debugging stubs, you may use the maintenance | |
649 | command `packet' to send any text string to the stub. For instance, | |
650 | ||
651 | maint packet heythere | |
652 | ||
653 | sends the packet "$heythere#<checksum>". Note that it is very easy to | |
654 | disrupt a debugging session by sending the wrong packet at the wrong | |
655 | time. | |
656 | ||
657 | The compare-sections command allows you to compare section data on the | |
658 | target to what is in the executable file without uploading or | |
659 | downloading, by comparing CRC checksums. | |
660 | ||
661 | * Tracing can collect general expressions | |
662 | ||
663 | You may now collect general expressions at tracepoints. This requires | |
664 | further additions to the target-side stub; see tracepoint.c and | |
665 | doc/agentexpr.texi for further details. | |
666 | ||
667 | * mask-address variable for Mips | |
668 | ||
669 | For Mips targets, you may control the zeroing of the upper 32 bits of | |
670 | a 64-bit address by entering `set mask-address on'. This is mainly | |
671 | of interest to users of embedded R4xxx and R5xxx processors. | |
672 | ||
673 | * Higher serial baud rates | |
674 | ||
675 | GDB's serial code now allows you to specify baud rates 57600, 115200, | |
676 | 230400, and 460800 baud. (Note that your host system may not be able | |
677 | to achieve all of these rates.) | |
678 | ||
679 | * i960 simulator | |
680 | ||
681 | The i960 configuration now includes an initial implementation of a | |
682 | builtin simulator, contributed by Jim Wilson. | |
683 | ||
684 | ||
685 | *** Changes in GDB-4.17: | |
686 | ||
687 | * New native configurations | |
688 | ||
689 | Alpha GNU/Linux alpha*-*-linux* | |
690 | Unixware 2.x i[3456]86-unixware2* | |
691 | Irix 6.x mips*-sgi-irix6* | |
692 | PowerPC GNU/Linux powerpc-*-linux* | |
693 | PowerPC Solaris powerpcle-*-solaris* | |
694 | Sparc GNU/Linux sparc-*-linux* | |
695 | Motorola sysV68 R3V7.1 m68k-motorola-sysv | |
696 | ||
697 | * New targets | |
698 | ||
699 | Argonaut Risc Chip (ARC) arc-*-* | |
700 | Hitachi H8/300S h8300*-*-* | |
701 | Matsushita MN10200 w/simulator mn10200-*-* | |
702 | Matsushita MN10300 w/simulator mn10300-*-* | |
703 | MIPS NEC VR4100 mips64*vr4100*{,el}-*-elf* | |
704 | MIPS NEC VR5000 mips64*vr5000*{,el}-*-elf* | |
705 | MIPS Toshiba TX39 mips64*tx39*{,el}-*-elf* | |
706 | Mitsubishi D10V w/simulator d10v-*-* | |
707 | Mitsubishi M32R/D w/simulator m32r-*-elf* | |
708 | Tsqware Sparclet sparclet-*-* | |
709 | NEC V850 w/simulator v850-*-* | |
710 | ||
711 | * New debugging protocols | |
712 | ||
713 | ARM with RDI protocol arm*-*-* | |
714 | M68K with dBUG monitor m68*-*-{aout,coff,elf} | |
715 | DDB and LSI variants of PMON protocol mips*-*-* | |
716 | PowerPC with DINK32 monitor powerpc{,le}-*-eabi | |
717 | PowerPC with SDS protocol powerpc{,le}-*-eabi | |
718 | Macraigor OCD (Wiggler) devices powerpc{,le}-*-eabi | |
719 | ||
720 | * DWARF 2 | |
721 | ||
722 | All configurations can now understand and use the DWARF 2 debugging | |
723 | format. The choice is automatic, if the symbol file contains DWARF 2 | |
724 | information. | |
725 | ||
726 | * Java frontend | |
727 | ||
728 | GDB now includes basic Java language support. This support is | |
729 | only useful with Java compilers that produce native machine code. | |
730 | ||
731 | * solib-absolute-prefix and solib-search-path | |
732 | ||
733 | For SunOS and SVR4 shared libraries, you may now set the prefix for | |
734 | loading absolute shared library symbol files, and the search path for | |
735 | locating non-absolute shared library symbol files. | |
736 | ||
737 | * Live range splitting | |
738 | ||
739 | GDB can now effectively debug code for which GCC has performed live | |
740 | range splitting as part of its optimization. See gdb/doc/LRS for | |
741 | more details on the expected format of the stabs information. | |
742 | ||
743 | * Hurd support | |
744 | ||
745 | GDB's support for the GNU Hurd, including thread debugging, has been | |
746 | updated to work with current versions of the Hurd. | |
747 | ||
748 | * ARM Thumb support | |
749 | ||
750 | GDB's ARM target configuration now handles the ARM7T (Thumb) 16-bit | |
751 | instruction set. ARM GDB automatically detects when Thumb | |
752 | instructions are in use, and adjusts disassembly and backtracing | |
753 | accordingly. | |
754 | ||
755 | * MIPS16 support | |
756 | ||
757 | GDB's MIPS target configurations now handle the MIP16 16-bit | |
758 | instruction set. | |
759 | ||
760 | * Overlay support | |
761 | ||
762 | GDB now includes support for overlays; if an executable has been | |
763 | linked such that multiple sections are based at the same address, GDB | |
764 | will decide which section to use for symbolic info. You can choose to | |
765 | control the decision manually, using overlay commands, or implement | |
766 | additional target-side support and use "overlay load-target" to bring | |
767 | in the overlay mapping. Do "help overlay" for more detail. | |
768 | ||
769 | * info symbol | |
770 | ||
771 | The command "info symbol <address>" displays information about | |
772 | the symbol at the specified address. | |
773 | ||
774 | * Trace support | |
775 | ||
776 | The standard remote protocol now includes an extension that allows | |
777 | asynchronous collection and display of trace data. This requires | |
778 | extensive support in the target-side debugging stub. Tracing mode | |
779 | includes a new interaction mode in GDB and new commands: see the | |
780 | file tracepoint.c for more details. | |
781 | ||
782 | * MIPS simulator | |
783 | ||
784 | Configurations for embedded MIPS now include a simulator contributed | |
785 | by Cygnus Solutions. The simulator supports the instruction sets | |
786 | of most MIPS variants. | |
787 | ||
788 | * Sparc simulator | |
789 | ||
790 | Sparc configurations may now include the ERC32 simulator contributed | |
791 | by the European Space Agency. The simulator is not built into | |
792 | Sparc targets by default; configure with --enable-sim to include it. | |
793 | ||
794 | * set architecture | |
795 | ||
796 | For target configurations that may include multiple variants of a | |
797 | basic architecture (such as MIPS and SH), you may now set the | |
798 | architecture explicitly. "set arch" sets, "info arch" lists | |
799 | the possible architectures. | |
800 | ||
801 | *** Changes in GDB-4.16: | |
802 | ||
803 | * New native configurations | |
804 | ||
805 | Windows 95, x86 Windows NT i[345]86-*-cygwin32 | |
806 | M68K NetBSD m68k-*-netbsd* | |
807 | PowerPC AIX 4.x powerpc-*-aix* | |
808 | PowerPC MacOS powerpc-*-macos* | |
809 | PowerPC Windows NT powerpcle-*-cygwin32 | |
810 | RS/6000 AIX 4.x rs6000-*-aix4* | |
811 | ||
812 | * New targets | |
813 | ||
814 | ARM with RDP protocol arm-*-* | |
815 | I960 with MON960 i960-*-coff | |
816 | MIPS VxWorks mips*-*-vxworks* | |
817 | MIPS VR4300 with PMON mips64*vr4300{,el}-*-elf* | |
818 | PowerPC with PPCBUG monitor powerpc{,le}-*-eabi* | |
819 | Hitachi SH3 sh-*-* | |
820 | Matra Sparclet sparclet-*-* | |
821 | ||
822 | * PowerPC simulator | |
823 | ||
824 | The powerpc-eabi configuration now includes the PSIM simulator, | |
825 | contributed by Andrew Cagney, with assistance from Mike Meissner. | |
826 | PSIM is a very elaborate model of the PowerPC, including not only | |
827 | basic instruction set execution, but also details of execution unit | |
828 | performance and I/O hardware. See sim/ppc/README for more details. | |
829 | ||
830 | * Solaris 2.5 | |
831 | ||
832 | GDB now works with Solaris 2.5. | |
833 | ||
834 | * Windows 95/NT native | |
835 | ||
836 | GDB will now work as a native debugger on Windows 95 and Windows NT. | |
837 | To build it from source, you must use the "gnu-win32" environment, | |
838 | which uses a DLL to emulate enough of Unix to run the GNU tools. | |
839 | Further information, binaries, and sources are available at | |
840 | ftp.cygnus.com, under pub/gnu-win32. | |
841 | ||
842 | * dont-repeat command | |
843 | ||
844 | If a user-defined command includes the command `dont-repeat', then the | |
845 | command will not be repeated if the user just types return. This is | |
846 | useful if the command is time-consuming to run, so that accidental | |
847 | extra keystrokes don't run the same command many times. | |
848 | ||
849 | * Send break instead of ^C | |
850 | ||
851 | The standard remote protocol now includes an option to send a break | |
852 | rather than a ^C to the target in order to interrupt it. By default, | |
853 | GDB will send ^C; to send a break, set the variable `remotebreak' to 1. | |
854 | ||
855 | * Remote protocol timeout | |
856 | ||
857 | The standard remote protocol includes a new variable `remotetimeout' | |
858 | that allows you to set the number of seconds before GDB gives up trying | |
859 | to read from the target. The default value is 2. | |
860 | ||
861 | * Automatic tracking of dynamic object loading (HPUX and Solaris only) | |
862 | ||
863 | By default GDB will automatically keep track of objects as they are | |
864 | loaded and unloaded by the dynamic linker. By using the command `set | |
865 | stop-on-solib-events 1' you can arrange for GDB to stop the inferior | |
866 | when shared library events occur, thus allowing you to set breakpoints | |
867 | in shared libraries which are explicitly loaded by the inferior. | |
868 | ||
869 | Note this feature does not work on hpux8. On hpux9 you must link | |
870 | /usr/lib/end.o into your program. This feature should work | |
871 | automatically on hpux10. | |
872 | ||
873 | * Irix 5.x hardware watchpoint support | |
874 | ||
875 | Irix 5 configurations now support the use of hardware watchpoints. | |
876 | ||
877 | * Mips protocol "SYN garbage limit" | |
878 | ||
879 | When debugging a Mips target using the `target mips' protocol, you | |
880 | may set the number of characters that GDB will ignore by setting | |
881 | the `syn-garbage-limit'. A value of -1 means that GDB will ignore | |
882 | every character. The default value is 1050. | |
883 | ||
884 | * Recording and replaying remote debug sessions | |
885 | ||
886 | If you set `remotelogfile' to the name of a file, gdb will write to it | |
887 | a recording of a remote debug session. This recording may then be | |
888 | replayed back to gdb using "gdbreplay". See gdbserver/README for | |
889 | details. This is useful when you have a problem with GDB while doing | |
890 | remote debugging; you can make a recording of the session and send it | |
891 | to someone else, who can then recreate the problem. | |
892 | ||
893 | * Speedups for remote debugging | |
894 | ||
895 | GDB includes speedups for downloading and stepping MIPS systems using | |
896 | the IDT monitor, fast downloads to the Hitachi SH E7000 emulator, | |
897 | and more efficient S-record downloading. | |
898 | ||
899 | * Memory use reductions and statistics collection | |
900 | ||
901 | GDB now uses less memory and reports statistics about memory usage. | |
902 | Try the `maint print statistics' command, for example. | |
903 | ||
904 | *** Changes in GDB-4.15: | |
905 | ||
906 | * Psymtabs for XCOFF | |
907 | ||
908 | The symbol reader for AIX GDB now uses partial symbol tables. This | |
909 | can greatly improve startup time, especially for large executables. | |
910 | ||
911 | * Remote targets use caching | |
912 | ||
913 | Remote targets now use a data cache to speed up communication with the | |
914 | remote side. The data cache could lead to incorrect results because | |
915 | it doesn't know about volatile variables, thus making it impossible to | |
916 | debug targets which use memory mapped I/O devices. `set remotecache | |
917 | off' turns the the data cache off. | |
918 | ||
919 | * Remote targets may have threads | |
920 | ||
921 | The standard remote protocol now includes support for multiple threads | |
922 | in the target system, using new protocol commands 'H' and 'T'. See | |
923 | gdb/remote.c for details. | |
924 | ||
925 | * NetROM support | |
926 | ||
927 | If GDB is configured with `--enable-netrom', then it will include | |
928 | support for the NetROM ROM emulator from XLNT Designs. The NetROM | |
929 | acts as though it is a bank of ROM on the target board, but you can | |
930 | write into it over the network. GDB's support consists only of | |
931 | support for fast loading into the emulated ROM; to debug, you must use | |
932 | another protocol, such as standard remote protocol. The usual | |
933 | sequence is something like | |
934 | ||
935 | target nrom <netrom-hostname> | |
936 | load <prog> | |
937 | target remote <netrom-hostname>:1235 | |
938 | ||
939 | * Macintosh host | |
940 | ||
941 | GDB now includes support for the Apple Macintosh, as a host only. It | |
942 | may be run as either an MPW tool or as a standalone application, and | |
943 | it can debug through the serial port. All the usual GDB commands are | |
944 | available, but to the target command, you must supply "serial" as the | |
945 | device type instead of "/dev/ttyXX". See mpw-README in the main | |
946 | directory for more information on how to build. The MPW configuration | |
947 | scripts */mpw-config.in support only a few targets, and only the | |
948 | mips-idt-ecoff target has been tested. | |
949 | ||
950 | * Autoconf | |
951 | ||
952 | GDB configuration now uses autoconf. This is not user-visible, | |
953 | but does simplify configuration and building. | |
954 | ||
955 | * hpux10 | |
956 | ||
957 | GDB now supports hpux10. | |
958 | ||
959 | *** Changes in GDB-4.14: | |
960 | ||
961 | * New native configurations | |
962 | ||
963 | x86 FreeBSD i[345]86-*-freebsd | |
964 | x86 NetBSD i[345]86-*-netbsd | |
965 | NS32k NetBSD ns32k-*-netbsd | |
966 | Sparc NetBSD sparc-*-netbsd | |
967 | ||
968 | * New targets | |
969 | ||
970 | A29K VxWorks a29k-*-vxworks | |
971 | HP PA PRO embedded (WinBond W89K & Oki OP50N) hppa*-*-pro* | |
972 | CPU32 EST-300 emulator m68*-*-est* | |
973 | PowerPC ELF powerpc-*-elf | |
974 | WDC 65816 w65-*-* | |
975 | ||
976 | * Alpha OSF/1 support for procfs | |
977 | ||
978 | GDB now supports procfs under OSF/1-2.x and higher, which makes it | |
979 | possible to attach to running processes. As the mounting of the /proc | |
980 | filesystem is optional on the Alpha, GDB automatically determines | |
981 | the availability of /proc during startup. This can lead to problems | |
982 | if /proc is unmounted after GDB has been started. | |
983 | ||
984 | * Arguments to user-defined commands | |
985 | ||
986 | User commands may accept up to 10 arguments separated by whitespace. | |
987 | Arguments are accessed within the user command via $arg0..$arg9. A | |
988 | trivial example: | |
989 | define adder | |
990 | print $arg0 + $arg1 + $arg2 | |
991 | ||
992 | To execute the command use: | |
993 | adder 1 2 3 | |
994 | ||
995 | Defines the command "adder" which prints the sum of its three arguments. | |
996 | Note the arguments are text substitutions, so they may reference variables, | |
997 | use complex expressions, or even perform inferior function calls. | |
998 | ||
999 | * New `if' and `while' commands | |
1000 | ||
1001 | This makes it possible to write more sophisticated user-defined | |
1002 | commands. Both commands take a single argument, which is the | |
1003 | expression to evaluate, and must be followed by the commands to | |
1004 | execute, one per line, if the expression is nonzero, the list being | |
1005 | terminated by the word `end'. The `if' command list may include an | |
1006 | `else' word, which causes the following commands to be executed only | |
1007 | if the expression is zero. | |
1008 | ||
1009 | * Fortran source language mode | |
1010 | ||
1011 | GDB now includes partial support for Fortran 77. It will recognize | |
1012 | Fortran programs and can evaluate a subset of Fortran expressions, but | |
1013 | variables and functions may not be handled correctly. GDB will work | |
1014 | with G77, but does not yet know much about symbols emitted by other | |
1015 | Fortran compilers. | |
1016 | ||
1017 | * Better HPUX support | |
1018 | ||
1019 | Most debugging facilities now work on dynamic executables for HPPAs | |
1020 | running hpux9 or later. You can attach to running dynamically linked | |
1021 | processes, but by default the dynamic libraries will be read-only, so | |
1022 | for instance you won't be able to put breakpoints in them. To change | |
1023 | that behavior do the following before running the program: | |
1024 | ||
1025 | adb -w a.out | |
1026 | __dld_flags?W 0x5 | |
1027 | control-d | |
1028 | ||
1029 | This will cause the libraries to be mapped private and read-write. | |
1030 | To revert to the normal behavior, do this: | |
1031 | ||
1032 | adb -w a.out | |
1033 | __dld_flags?W 0x4 | |
1034 | control-d | |
1035 | ||
1036 | You cannot set breakpoints or examine data in the library until after | |
1037 | the library is loaded if the function/data symbols do not have | |
1038 | external linkage. | |
1039 | ||
1040 | GDB can now also read debug symbols produced by the HP C compiler on | |
1041 | HPPAs (sorry, no C++, Fortran or 68k support). | |
1042 | ||
1043 | * Target byte order now dynamically selectable | |
1044 | ||
1045 | You can choose which byte order to use with a target system, via the | |
1046 | commands "set endian big" and "set endian little", and you can see the | |
1047 | current setting by using "show endian". You can also give the command | |
1048 | "set endian auto", in which case GDB will use the byte order | |
1049 | associated with the executable. Currently, only embedded MIPS | |
1050 | configurations support dynamic selection of target byte order. | |
1051 | ||
1052 | * New DOS host serial code | |
1053 | ||
1054 | This version uses DPMI interrupts to handle buffered I/O, so you | |
1055 | no longer need to run asynctsr when debugging boards connected to | |
1056 | a PC's serial port. | |
1057 | ||
1058 | *** Changes in GDB-4.13: | |
1059 | ||
1060 | * New "complete" command | |
1061 | ||
1062 | This lists all the possible completions for the rest of the line, if it | |
1063 | were to be given as a command itself. This is intended for use by emacs. | |
1064 | ||
1065 | * Trailing space optional in prompt | |
1066 | ||
1067 | "set prompt" no longer adds a space for you after the prompt you set. This | |
1068 | allows you to set a prompt which ends in a space or one that does not. | |
1069 | ||
1070 | * Breakpoint hit counts | |
1071 | ||
1072 | "info break" now displays a count of the number of times the breakpoint | |
1073 | has been hit. This is especially useful in conjunction with "ignore"; you | |
1074 | can ignore a large number of breakpoint hits, look at the breakpoint info | |
1075 | to see how many times the breakpoint was hit, then run again, ignoring one | |
1076 | less than that number, and this will get you quickly to the last hit of | |
1077 | that breakpoint. | |
1078 | ||
1079 | * Ability to stop printing at NULL character | |
1080 | ||
1081 | "set print null-stop" will cause GDB to stop printing the characters of | |
1082 | an array when the first NULL is encountered. This is useful when large | |
1083 | arrays actually contain only short strings. | |
1084 | ||
1085 | * Shared library breakpoints | |
1086 | ||
1087 | In SunOS 4.x, SVR4, and Alpha OSF/1 configurations, you can now set | |
1088 | breakpoints in shared libraries before the executable is run. | |
1089 | ||
1090 | * Hardware watchpoints | |
1091 | ||
1092 | There is a new hardware breakpoint for the watch command for sparclite | |
1093 | targets. See gdb/sparclite/hw_breakpoint.note. | |
1094 | ||
55241689 | 1095 | Hardware watchpoints are also now supported under GNU/Linux. |
c906108c SS |
1096 | |
1097 | * Annotations | |
1098 | ||
1099 | Annotations have been added. These are for use with graphical interfaces, | |
1100 | and are still experimental. Currently only gdba.el uses these. | |
1101 | ||
1102 | * Improved Irix 5 support | |
1103 | ||
1104 | GDB now works properly with Irix 5.2. | |
1105 | ||
1106 | * Improved HPPA support | |
1107 | ||
1108 | GDB now works properly with the latest GCC and GAS. | |
1109 | ||
1110 | * New native configurations | |
1111 | ||
1112 | Sequent PTX4 i[34]86-sequent-ptx4 | |
1113 | HPPA running OSF/1 hppa*-*-osf* | |
1114 | Atari TT running SVR4 m68*-*-sysv4* | |
1115 | RS/6000 LynxOS rs6000-*-lynxos* | |
1116 | ||
1117 | * New targets | |
1118 | ||
1119 | OS/9000 i[34]86-*-os9k | |
1120 | MIPS R4000 mips64*{,el}-*-{ecoff,elf} | |
1121 | Sparc64 sparc64-*-* | |
1122 | ||
1123 | * Hitachi SH7000 and E7000-PC ICE support | |
1124 | ||
1125 | There is now support for communicating with the Hitachi E7000-PC ICE. | |
1126 | This is available automatically when GDB is configured for the SH. | |
1127 | ||
1128 | * Fixes | |
1129 | ||
1130 | As usual, a variety of small fixes and improvements, both generic | |
1131 | and configuration-specific. See the ChangeLog for more detail. | |
1132 | ||
1133 | *** Changes in GDB-4.12: | |
1134 | ||
1135 | * Irix 5 is now supported | |
1136 | ||
1137 | * HPPA support | |
1138 | ||
1139 | GDB-4.12 on the HPPA has a number of changes which make it unable | |
1140 | to debug the output from the currently released versions of GCC and | |
1141 | GAS (GCC 2.5.8 and GAS-2.2 or PAGAS-1.36). Until the next major release | |
1142 | of GCC and GAS, versions of these tools designed to work with GDB-4.12 | |
1143 | can be retrieved via anonymous ftp from jaguar.cs.utah.edu:/dist. | |
1144 | ||
1145 | ||
1146 | *** Changes in GDB-4.11: | |
1147 | ||
1148 | * User visible changes: | |
1149 | ||
1150 | * Remote Debugging | |
1151 | ||
1152 | The "set remotedebug" option is now consistent between the mips remote | |
1153 | target, remote targets using the gdb-specific protocol, UDI (AMD's | |
1154 | debug protocol for the 29k) and the 88k bug monitor. It is now an | |
1155 | integer specifying a debug level (normally 0 or 1, but 2 means more | |
1156 | debugging info for the mips target). | |
1157 | ||
1158 | * DEC Alpha native support | |
1159 | ||
1160 | GDB now works on the DEC Alpha. GCC 2.4.5 does not produce usable | |
1161 | debug info, but GDB works fairly well with the DEC compiler and should | |
1162 | work with a future GCC release. See the README file for a few | |
1163 | Alpha-specific notes. | |
1164 | ||
1165 | * Preliminary thread implementation | |
1166 | ||
1167 | GDB now has preliminary thread support for both SGI/Irix and LynxOS. | |
1168 | ||
1169 | * LynxOS native and target support for 386 | |
1170 | ||
1171 | This release has been hosted on LynxOS 2.2, and also can be configured | |
1172 | to remotely debug programs running under LynxOS (see gdb/gdbserver/README | |
1173 | for details). | |
1174 | ||
1175 | * Improvements in C++ mangling/demangling. | |
1176 | ||
1177 | This release has much better g++ debugging, specifically in name | |
1178 | mangling/demangling, virtual function calls, print virtual table, | |
1179 | call methods, ...etc. | |
1180 | ||
1181 | *** Changes in GDB-4.10: | |
1182 | ||
1183 | * User visible changes: | |
1184 | ||
1185 | Remote debugging using the GDB-specific (`target remote') protocol now | |
1186 | supports the `load' command. This is only useful if you have some | |
1187 | other way of getting the stub to the target system, and you can put it | |
1188 | somewhere in memory where it won't get clobbered by the download. | |
1189 | ||
1190 | Filename completion now works. | |
1191 | ||
1192 | When run under emacs mode, the "info line" command now causes the | |
1193 | arrow to point to the line specified. Also, "info line" prints | |
1194 | addresses in symbolic form (as well as hex). | |
1195 | ||
1196 | All vxworks based targets now support a user settable option, called | |
1197 | vxworks-timeout. This option represents the number of seconds gdb | |
1198 | should wait for responses to rpc's. You might want to use this if | |
1199 | your vxworks target is, perhaps, a slow software simulator or happens | |
1200 | to be on the far side of a thin network line. | |
1201 | ||
1202 | * DEC alpha support | |
1203 | ||
1204 | This release contains support for using a DEC alpha as a GDB host for | |
1205 | cross debugging. Native alpha debugging is not supported yet. | |
1206 | ||
1207 | ||
1208 | *** Changes in GDB-4.9: | |
1209 | ||
1210 | * Testsuite | |
1211 | ||
1212 | This is the first GDB release which is accompanied by a matching testsuite. | |
1213 | The testsuite requires installation of dejagnu, which should be available | |
1214 | via ftp from most sites that carry GNU software. | |
1215 | ||
1216 | * C++ demangling | |
1217 | ||
1218 | 'Cfront' style demangling has had its name changed to 'ARM' style, to | |
1219 | emphasize that it was written from the specifications in the C++ Annotated | |
1220 | Reference Manual, not necessarily to be compatible with AT&T cfront. Despite | |
1221 | disclaimers, it still generated too much confusion with users attempting to | |
1222 | use gdb with AT&T cfront. | |
1223 | ||
1224 | * Simulators | |
1225 | ||
1226 | GDB now uses a standard remote interface to a simulator library. | |
1227 | So far, the library contains simulators for the Zilog Z8001/2, the | |
1228 | Hitachi H8/300, H8/500 and Super-H. | |
1229 | ||
1230 | * New targets supported | |
1231 | ||
1232 | H8/300 simulator h8300-hitachi-hms or h8300hms | |
1233 | H8/500 simulator h8500-hitachi-hms or h8500hms | |
1234 | SH simulator sh-hitachi-hms or sh | |
1235 | Z8000 simulator z8k-zilog-none or z8ksim | |
1236 | IDT MIPS board over serial line mips-idt-ecoff | |
1237 | ||
1238 | Cross-debugging to GO32 targets is supported. It requires a custom | |
1239 | version of the i386-stub.c module which is integrated with the | |
1240 | GO32 memory extender. | |
1241 | ||
1242 | * New remote protocols | |
1243 | ||
1244 | MIPS remote debugging protocol. | |
1245 | ||
1246 | * New source languages supported | |
1247 | ||
1248 | This version includes preliminary support for Chill, a Pascal like language | |
1249 | used by telecommunications companies. Chill support is also being integrated | |
1250 | into the GNU compiler, but we don't know when it will be publically available. | |
1251 | ||
1252 | ||
1253 | *** Changes in GDB-4.8: | |
1254 | ||
1255 | * HP Precision Architecture supported | |
1256 | ||
1257 | GDB now supports HP PA-RISC machines running HPUX. A preliminary | |
1258 | version of this support was available as a set of patches from the | |
1259 | University of Utah. GDB does not support debugging of programs | |
1260 | compiled with the HP compiler, because HP will not document their file | |
1261 | format. Instead, you must use GCC (version 2.3.2 or later) and PA-GAS | |
1262 | (as available from jaguar.cs.utah.edu:/dist/pa-gas.u4.tar.Z). | |
1263 | ||
1264 | Many problems in the preliminary version have been fixed. | |
1265 | ||
1266 | * Faster and better demangling | |
1267 | ||
1268 | We have improved template demangling and fixed numerous bugs in the GNU style | |
1269 | demangler. It can now handle type modifiers such as `static' or `const'. Wide | |
1270 | character types (wchar_t) are now supported. Demangling of each symbol is now | |
1271 | only done once, and is cached when the symbol table for a file is read in. | |
1272 | This results in a small increase in memory usage for C programs, a moderate | |
1273 | increase in memory usage for C++ programs, and a fantastic speedup in | |
1274 | symbol lookups. | |
1275 | ||
1276 | `Cfront' style demangling still doesn't work with AT&T cfront. It was written | |
1277 | from the specifications in the Annotated Reference Manual, which AT&T's | |
1278 | compiler does not actually implement. | |
1279 | ||
1280 | * G++ multiple inheritance compiler problem | |
1281 | ||
1282 | In the 2.3.2 release of gcc/g++, how the compiler resolves multiple | |
1283 | inheritance lattices was reworked to properly discover ambiguities. We | |
1284 | recently found an example which causes this new algorithm to fail in a | |
1285 | very subtle way, producing bad debug information for those classes. | |
1286 | The file 'gcc.patch' (in this directory) can be applied to gcc to | |
1287 | circumvent the problem. A future GCC release will contain a complete | |
1288 | fix. | |
1289 | ||
1290 | The previous G++ debug info problem (mentioned below for the gdb-4.7 | |
1291 | release) is fixed in gcc version 2.3.2. | |
1292 | ||
1293 | * Improved configure script | |
1294 | ||
1295 | The `configure' script will now attempt to guess your system type if | |
1296 | you don't supply a host system type. The old scheme of supplying a | |
1297 | host system triplet is preferable over using this. All the magic is | |
1298 | done in the new `config.guess' script. Examine it for details. | |
1299 | ||
1300 | We have also brought our configure script much more in line with the FSF's | |
1301 | version. It now supports the --with-xxx options. In particular, | |
1302 | `--with-minimal-bfd' can be used to make the GDB binary image smaller. | |
1303 | The resulting GDB will not be able to read arbitrary object file formats -- | |
1304 | only the format ``expected'' to be used on the configured target system. | |
1305 | We hope to make this the default in a future release. | |
1306 | ||
1307 | * Documentation improvements | |
1308 | ||
1309 | There's new internal documentation on how to modify GDB, and how to | |
1310 | produce clean changes to the code. We implore people to read it | |
1311 | before submitting changes. | |
1312 | ||
1313 | The GDB manual uses new, sexy Texinfo conditionals, rather than arcane | |
1314 | M4 macros. The new texinfo.tex is provided in this release. Pre-built | |
1315 | `info' files are also provided. To build `info' files from scratch, | |
1316 | you will need the latest `makeinfo' release, which will be available in | |
1317 | a future texinfo-X.Y release. | |
1318 | ||
1319 | *NOTE* The new texinfo.tex can cause old versions of TeX to hang. | |
1320 | We're not sure exactly which versions have this problem, but it has | |
1321 | been seen in 3.0. We highly recommend upgrading to TeX version 3.141 | |
1322 | or better. If that isn't possible, there is a patch in | |
1323 | `texinfo/tex3patch' that will modify `texinfo/texinfo.tex' to work | |
1324 | around this problem. | |
1325 | ||
1326 | * New features | |
1327 | ||
1328 | GDB now supports array constants that can be used in expressions typed in by | |
1329 | the user. The syntax is `{element, element, ...}'. Ie: you can now type | |
1330 | `print {1, 2, 3}', and it will build up an array in memory malloc'd in | |
1331 | the target program. | |
1332 | ||
1333 | The new directory `gdb/sparclite' contains a program that demonstrates | |
1334 | how the sparc-stub.c remote stub runs on a Fujitsu SPARClite processor. | |
1335 | ||
1336 | * New native hosts supported | |
1337 | ||
1338 | HP/PA-RISC under HPUX using GNU tools hppa1.1-hp-hpux | |
1339 | 386 CPUs running SCO Unix 3.2v4 i386-unknown-sco3.2v4 | |
1340 | ||
1341 | * New targets supported | |
1342 | ||
1343 | AMD 29k family via UDI a29k-amd-udi or udi29k | |
1344 | ||
1345 | * New file formats supported | |
1346 | ||
1347 | BFD now supports reading HP/PA-RISC executables (SOM file format?), | |
1348 | HPUX core files, and SCO 3.2v2 core files. | |
1349 | ||
1350 | * Major bug fixes | |
1351 | ||
1352 | Attaching to processes now works again; thanks for the many bug reports. | |
1353 | ||
1354 | We have also stomped on a bunch of core dumps caused by | |
1355 | printf_filtered("%s") problems. | |
1356 | ||
1357 | We eliminated a copyright problem on the rpc and ptrace header files | |
1358 | for VxWorks, which was discovered at the last minute during the 4.7 | |
1359 | release. You should now be able to build a VxWorks GDB. | |
1360 | ||
1361 | You can now interrupt gdb while an attached process is running. This | |
1362 | will cause the attached process to stop, and give control back to GDB. | |
1363 | ||
1364 | We fixed problems caused by using too many file descriptors | |
1365 | for reading symbols from object files and libraries. This was | |
1366 | especially a problem for programs that used many (~100) shared | |
1367 | libraries. | |
1368 | ||
1369 | The `step' command now only enters a subroutine if there is line number | |
1370 | information for the subroutine. Otherwise it acts like the `next' | |
1371 | command. Previously, `step' would enter subroutines if there was | |
1372 | any debugging information about the routine. This avoids problems | |
1373 | when using `cc -g1' on MIPS machines. | |
1374 | ||
1375 | * Internal improvements | |
1376 | ||
1377 | GDB's internal interfaces have been improved to make it easier to support | |
1378 | debugging of multiple languages in the future. | |
1379 | ||
1380 | GDB now uses a common structure for symbol information internally. | |
1381 | Minimal symbols (derived from linkage symbols in object files), partial | |
1382 | symbols (from a quick scan of debug information), and full symbols | |
1383 | contain a common subset of information, making it easier to write | |
1384 | shared code that handles any of them. | |
1385 | ||
1386 | * New command line options | |
1387 | ||
1388 | We now accept --silent as an alias for --quiet. | |
1389 | ||
1390 | * Mmalloc licensing | |
1391 | ||
1392 | The memory-mapped-malloc library is now licensed under the GNU Library | |
1393 | General Public License. | |
1394 | ||
1395 | *** Changes in GDB-4.7: | |
1396 | ||
1397 | * Host/native/target split | |
1398 | ||
1399 | GDB has had some major internal surgery to untangle the support for | |
1400 | hosts and remote targets. Now, when you configure GDB for a remote | |
1401 | target, it will no longer load in all of the support for debugging | |
1402 | local programs on the host. When fully completed and tested, this will | |
1403 | ensure that arbitrary host/target combinations are possible. | |
1404 | ||
1405 | The primary conceptual shift is to separate the non-portable code in | |
1406 | GDB into three categories. Host specific code is required any time GDB | |
1407 | is compiled on that host, regardless of the target. Target specific | |
1408 | code relates to the peculiarities of the target, but can be compiled on | |
1409 | any host. Native specific code is everything else: it can only be | |
1410 | built when the host and target are the same system. Child process | |
1411 | handling and core file support are two common `native' examples. | |
1412 | ||
1413 | GDB's use of /proc for controlling Unix child processes is now cleaner. | |
1414 | It has been split out into a single module under the `target_ops' vector, | |
1415 | plus two native-dependent functions for each system that uses /proc. | |
1416 | ||
1417 | * New hosts supported | |
1418 | ||
1419 | HP/Apollo 68k (under the BSD domain) m68k-apollo-bsd or apollo68bsd | |
1420 | 386 CPUs running various BSD ports i386-unknown-bsd or 386bsd | |
1421 | 386 CPUs running SCO Unix i386-unknown-scosysv322 or i386sco | |
1422 | ||
1423 | * New targets supported | |
1424 | ||
1425 | Fujitsu SPARClite sparclite-fujitsu-none or sparclite | |
1426 | 68030 and CPU32 m68030-*-*, m68332-*-* | |
1427 | ||
1428 | * New native hosts supported | |
1429 | ||
1430 | 386 CPUs running various BSD ports i386-unknown-bsd or 386bsd | |
1431 | (386bsd is not well tested yet) | |
1432 | 386 CPUs running SCO Unix i386-unknown-scosysv322 or sco | |
1433 | ||
1434 | * New file formats supported | |
1435 | ||
1436 | BFD now supports COFF files for the Zilog Z8000 microprocessor. It | |
1437 | supports reading of `a.out.adobe' object files, which are an a.out | |
1438 | format extended with minimal information about multiple sections. | |
1439 | ||
1440 | * New commands | |
1441 | ||
1442 | `show copying' is the same as the old `info copying'. | |
1443 | `show warranty' is the same as `info warrantee'. | |
1444 | These were renamed for consistency. The old commands continue to work. | |
1445 | ||
1446 | `info handle' is a new alias for `info signals'. | |
1447 | ||
1448 | You can now define pre-command hooks, which attach arbitrary command | |
1449 | scripts to any command. The commands in the hook will be executed | |
1450 | prior to the user's command. You can also create a hook which will be | |
1451 | executed whenever the program stops. See gdb.texinfo. | |
1452 | ||
1453 | * C++ improvements | |
1454 | ||
1455 | We now deal with Cfront style name mangling, and can even extract type | |
1456 | info from mangled symbols. GDB can automatically figure out which | |
1457 | symbol mangling style your C++ compiler uses. | |
1458 | ||
1459 | Calling of methods and virtual functions has been improved as well. | |
1460 | ||
1461 | * Major bug fixes | |
1462 | ||
1463 | The crash that occured when debugging Sun Ansi-C compiled binaries is | |
1464 | fixed. This was due to mishandling of the extra N_SO stabs output | |
1465 | by the compiler. | |
1466 | ||
1467 | We also finally got Ultrix 4.2 running in house, and fixed core file | |
1468 | support, with help from a dozen people on the net. | |
1469 | ||
1470 | John M. Farrell discovered that the reason that single-stepping was so | |
1471 | slow on all of the Mips based platforms (primarily SGI and DEC) was | |
1472 | that we were trying to demangle and lookup a symbol used for internal | |
1473 | purposes on every instruction that was being stepped through. Changing | |
1474 | the name of that symbol so that it couldn't be mistaken for a C++ | |
1475 | mangled symbol sped things up a great deal. | |
1476 | ||
1477 | Rich Pixley sped up symbol lookups in general by getting much smarter | |
1478 | about when C++ symbol mangling is necessary. This should make symbol | |
1479 | completion (TAB on the command line) much faster. It's not as fast as | |
1480 | we'd like, but it's significantly faster than gdb-4.6. | |
1481 | ||
1482 | * AMD 29k support | |
1483 | ||
1484 | A new user controllable variable 'call_scratch_address' can | |
1485 | specify the location of a scratch area to be used when GDB | |
1486 | calls a function in the target. This is necessary because the | |
1487 | usual method of putting the scratch area on the stack does not work | |
1488 | in systems that have separate instruction and data spaces. | |
1489 | ||
1490 | We integrated changes to support the 29k UDI (Universal Debugger | |
1491 | Interface), but discovered at the last minute that we didn't have all | |
1492 | of the appropriate copyright paperwork. We are working with AMD to | |
1493 | resolve this, and hope to have it available soon. | |
1494 | ||
1495 | * Remote interfaces | |
1496 | ||
1497 | We have sped up the remote serial line protocol, especially for targets | |
1498 | with lots of registers. It now supports a new `expedited status' ('T') | |
1499 | message which can be used in place of the existing 'S' status message. | |
1500 | This allows the remote stub to send only the registers that GDB | |
1501 | needs to make a quick decision about single-stepping or conditional | |
1502 | breakpoints, eliminating the need to fetch the entire register set for | |
1503 | each instruction being stepped through. | |
1504 | ||
1505 | The GDB remote serial protocol now implements a write-through cache for | |
1506 | registers, only re-reading the registers if the target has run. | |
1507 | ||
1508 | There is also a new remote serial stub for SPARC processors. You can | |
1509 | find it in gdb-4.7/gdb/sparc-stub.c. This was written to support the | |
1510 | Fujitsu SPARClite processor, but will run on any stand-alone SPARC | |
1511 | processor with a serial port. | |
1512 | ||
1513 | * Configuration | |
1514 | ||
1515 | Configure.in files have become much easier to read and modify. A new | |
1516 | `table driven' format makes it more obvious what configurations are | |
1517 | supported, and what files each one uses. | |
1518 | ||
1519 | * Library changes | |
1520 | ||
1521 | There is a new opcodes library which will eventually contain all of the | |
1522 | disassembly routines and opcode tables. At present, it only contains | |
1523 | Sparc and Z8000 routines. This will allow the assembler, debugger, and | |
1524 | disassembler (binutils/objdump) to share these routines. | |
1525 | ||
1526 | The libiberty library is now copylefted under the GNU Library General | |
1527 | Public License. This allows more liberal use, and was done so libg++ | |
1528 | can use it. This makes no difference to GDB, since the Library License | |
1529 | grants all the rights from the General Public License. | |
1530 | ||
1531 | * Documentation | |
1532 | ||
1533 | The file gdb-4.7/gdb/doc/stabs.texinfo is a (relatively) complete | |
1534 | reference to the stabs symbol info used by the debugger. It is (as far | |
1535 | as we know) the only published document on this fascinating topic. We | |
1536 | encourage you to read it, compare it to the stabs information on your | |
1537 | system, and send improvements on the document in general (to | |
1538 | bug-gdb@prep.ai.mit.edu). | |
1539 | ||
1540 | And, of course, many bugs have been fixed. | |
1541 | ||
1542 | ||
1543 | *** Changes in GDB-4.6: | |
1544 | ||
1545 | * Better support for C++ function names | |
1546 | ||
1547 | GDB now accepts as input the "demangled form" of C++ overloaded function | |
1548 | names and member function names, and can do command completion on such names | |
1549 | (using TAB, TAB-TAB, and ESC-?). The names have to be quoted with a pair of | |
1550 | single quotes. Examples are 'func (int, long)' and 'obj::operator==(obj&)'. | |
1551 | Make use of command completion, it is your friend. | |
1552 | ||
1553 | GDB also now accepts a variety of C++ mangled symbol formats. They are | |
1554 | the GNU g++ style, the Cfront (ARM) style, and the Lucid (lcc) style. | |
1555 | You can tell GDB which format to use by doing a 'set demangle-style {gnu, | |
1556 | lucid, cfront, auto}'. 'gnu' is the default. Do a 'set demangle-style foo' | |
1557 | for the list of formats. | |
1558 | ||
1559 | * G++ symbol mangling problem | |
1560 | ||
1561 | Recent versions of gcc have a bug in how they emit debugging information for | |
1562 | C++ methods (when using dbx-style stabs). The file 'gcc.patch' (in this | |
1563 | directory) can be applied to gcc to fix the problem. Alternatively, if you | |
1564 | can't fix gcc, you can #define GCC_MANGLE_BUG when compling gdb/symtab.c. The | |
1565 | usual symptom is difficulty with setting breakpoints on methods. GDB complains | |
1566 | about the method being non-existent. (We believe that version 2.2.2 of GCC has | |
1567 | this problem.) | |
1568 | ||
1569 | * New 'maintenance' command | |
1570 | ||
1571 | All of the commands related to hacking GDB internals have been moved out of | |
1572 | the main command set, and now live behind the 'maintenance' command. This | |
1573 | can also be abbreviated as 'mt'. The following changes were made: | |
1574 | ||
1575 | dump-me -> maintenance dump-me | |
1576 | info all-breakpoints -> maintenance info breakpoints | |
1577 | printmsyms -> maintenance print msyms | |
1578 | printobjfiles -> maintenance print objfiles | |
1579 | printpsyms -> maintenance print psymbols | |
1580 | printsyms -> maintenance print symbols | |
1581 | ||
1582 | The following commands are new: | |
1583 | ||
1584 | maintenance demangle Call internal GDB demangler routine to | |
1585 | demangle a C++ link name and prints the result. | |
1586 | maintenance print type Print a type chain for a given symbol | |
1587 | ||
1588 | * Change to .gdbinit file processing | |
1589 | ||
1590 | We now read the $HOME/.gdbinit file before processing the argv arguments | |
1591 | (e.g. reading symbol files or core files). This allows global parameters to | |
1592 | be set, which will apply during the symbol reading. The ./.gdbinit is still | |
1593 | read after argv processing. | |
1594 | ||
1595 | * New hosts supported | |
1596 | ||
1597 | Solaris-2.0 !!! sparc-sun-solaris2 or sun4sol2 | |
1598 | ||
55241689 | 1599 | GNU/Linux support i386-unknown-linux or linux |
c906108c SS |
1600 | |
1601 | We are also including code to support the HP/PA running BSD and HPUX. This | |
1602 | is almost guaranteed not to work, as we didn't have time to test or build it | |
1603 | for this release. We are including it so that the more adventurous (or | |
1604 | masochistic) of you can play with it. We also had major problems with the | |
1605 | fact that the compiler that we got from HP doesn't support the -g option. | |
1606 | It costs extra. | |
1607 | ||
1608 | * New targets supported | |
1609 | ||
1610 | Hitachi H8/300 h8300-hitachi-hms or h8300hms | |
1611 | ||
1612 | * More smarts about finding #include files | |
1613 | ||
1614 | GDB now remembers the compilation directory for all include files, and for | |
1615 | all files from which C is generated (like yacc and lex sources). This | |
1616 | greatly improves GDB's ability to find yacc/lex sources, and include files, | |
1617 | especially if you are debugging your program from a directory different from | |
1618 | the one that contains your sources. | |
1619 | ||
1620 | We also fixed a bug which caused difficulty with listing and setting | |
1621 | breakpoints in include files which contain C code. (In the past, you had to | |
1622 | try twice in order to list an include file that you hadn't looked at before.) | |
1623 | ||
1624 | * Interesting infernals change | |
1625 | ||
1626 | GDB now deals with arbitrary numbers of sections, where the symbols for each | |
1627 | section must be relocated relative to that section's landing place in the | |
1628 | target's address space. This work was needed to support ELF with embedded | |
1629 | stabs used by Solaris-2.0. | |
1630 | ||
1631 | * Bug fixes (of course!) | |
1632 | ||
1633 | There have been loads of fixes for the following things: | |
1634 | mips, rs6000, 29k/udi, m68k, g++, type handling, elf/dwarf, m88k, | |
1635 | i960, stabs, DOS(GO32), procfs, etc... | |
1636 | ||
1637 | See the ChangeLog for details. | |
1638 | ||
1639 | *** Changes in GDB-4.5: | |
1640 | ||
1641 | * New machines supported (host and target) | |
1642 | ||
1643 | IBM RS6000 running AIX rs6000-ibm-aix or rs6000 | |
1644 | ||
1645 | SGI Irix-4.x mips-sgi-irix4 or iris4 | |
1646 | ||
1647 | * New malloc package | |
1648 | ||
1649 | GDB now uses a new memory manager called mmalloc, based on gmalloc. | |
1650 | Mmalloc is capable of handling mutiple heaps of memory. It is also | |
1651 | capable of saving a heap to a file, and then mapping it back in later. | |
1652 | This can be used to greatly speedup the startup of GDB by using a | |
1653 | pre-parsed symbol table which lives in a mmalloc managed heap. For | |
1654 | more details, please read mmalloc/mmalloc.texi. | |
1655 | ||
1656 | * info proc | |
1657 | ||
1658 | The 'info proc' command (SVR4 only) has been enhanced quite a bit. See | |
1659 | 'help info proc' for details. | |
1660 | ||
1661 | * MIPS ecoff symbol table format | |
1662 | ||
1663 | The code that reads MIPS symbol table format is now supported on all hosts. | |
1664 | Thanks to MIPS for releasing the sym.h and symconst.h files to make this | |
1665 | possible. | |
1666 | ||
1667 | * File name changes for MS-DOS | |
1668 | ||
1669 | Many files in the config directories have been renamed to make it easier to | |
1670 | support GDB on MS-DOSe systems (which have very restrictive file name | |
1671 | conventions :-( ). MS-DOSe host support (under DJ Delorie's GO32 | |
1672 | environment) is close to working but has some remaining problems. Note | |
1673 | that debugging of DOS programs is not supported, due to limitations | |
1674 | in the ``operating system'', but it can be used to host cross-debugging. | |
1675 | ||
1676 | * Cross byte order fixes | |
1677 | ||
1678 | Many fixes have been made to support cross debugging of Sparc and MIPS | |
1679 | targets from hosts whose byte order differs. | |
1680 | ||
1681 | * New -mapped and -readnow options | |
1682 | ||
1683 | If memory-mapped files are available on your system through the 'mmap' | |
1684 | system call, you can use the -mapped option on the `file' or | |
1685 | `symbol-file' commands to cause GDB to write the symbols from your | |
1686 | program into a reusable file. If the program you are debugging is | |
1687 | called `/path/fred', the mapped symbol file will be `./fred.syms'. | |
1688 | Future GDB debugging sessions will notice the presence of this file, | |
1689 | and will quickly map in symbol information from it, rather than reading | |
1690 | the symbol table from the executable program. Using the '-mapped' | |
1691 | option in a GDB `file' or `symbol-file' command has the same effect as | |
1692 | starting GDB with the '-mapped' command-line option. | |
1693 | ||
1694 | You can cause GDB to read the entire symbol table immediately by using | |
1695 | the '-readnow' option with any of the commands that load symbol table | |
1696 | information (or on the GDB command line). This makes the command | |
1697 | slower, but makes future operations faster. | |
1698 | ||
1699 | The -mapped and -readnow options are typically combined in order to | |
1700 | build a `fred.syms' file that contains complete symbol information. | |
1701 | A simple GDB invocation to do nothing but build a `.syms' file for future | |
1702 | use is: | |
1703 | ||
1704 | gdb -batch -nx -mapped -readnow programname | |
1705 | ||
1706 | The `.syms' file is specific to the host machine on which GDB is run. | |
1707 | It holds an exact image of GDB's internal symbol table. It cannot be | |
1708 | shared across multiple host platforms. | |
1709 | ||
1710 | * longjmp() handling | |
1711 | ||
1712 | GDB is now capable of stepping and nexting over longjmp(), _longjmp(), and | |
1713 | siglongjmp() without losing control. This feature has not yet been ported to | |
1714 | all systems. It currently works on many 386 platforms, all MIPS-based | |
1715 | platforms (SGI, DECstation, etc), and Sun3/4. | |
1716 | ||
1717 | * Solaris 2.0 | |
1718 | ||
1719 | Preliminary work has been put in to support the new Solaris OS from Sun. At | |
1720 | this time, it can control and debug processes, but it is not capable of | |
1721 | reading symbols. | |
1722 | ||
1723 | * Bug fixes | |
1724 | ||
1725 | As always, many many bug fixes. The major areas were with g++, and mipsread. | |
1726 | People using the MIPS-based platforms should experience fewer mysterious | |
1727 | crashes and trashed symbol tables. | |
1728 | ||
1729 | *** Changes in GDB-4.4: | |
1730 | ||
1731 | * New machines supported (host and target) | |
1732 | ||
1733 | SCO Unix on i386 IBM PC clones i386-sco-sysv or i386sco | |
1734 | (except core files) | |
1735 | BSD Reno on Vax vax-dec-bsd | |
1736 | Ultrix on Vax vax-dec-ultrix | |
1737 | ||
1738 | * New machines supported (target) | |
1739 | ||
1740 | AMD 29000 embedded, using EBMON a29k-none-none | |
1741 | ||
1742 | * C++ support | |
1743 | ||
1744 | GDB continues to improve its handling of C++. `References' work better. | |
1745 | The demangler has also been improved, and now deals with symbols mangled as | |
1746 | per the Annotated C++ Reference Guide. | |
1747 | ||
1748 | GDB also now handles `stabs' symbol information embedded in MIPS | |
1749 | `ecoff' symbol tables. Since the ecoff format was not easily | |
1750 | extensible to handle new languages such as C++, this appeared to be a | |
1751 | good way to put C++ debugging info into MIPS binaries. This option | |
1752 | will be supported in the GNU C compiler, version 2, when it is | |
1753 | released. | |
1754 | ||
1755 | * New features for SVR4 | |
1756 | ||
1757 | GDB now handles SVR4 shared libraries, in the same fashion as SunOS | |
1758 | shared libraries. Debugging dynamically linked programs should present | |
1759 | only minor differences from debugging statically linked programs. | |
1760 | ||
1761 | The `info proc' command will print out information about any process | |
1762 | on an SVR4 system (including the one you are debugging). At the moment, | |
1763 | it prints the address mappings of the process. | |
1764 | ||
1765 | If you bring up GDB on another SVR4 system, please send mail to | |
1766 | bug-gdb@prep.ai.mit.edu to let us know what changes were reqired (if any). | |
1767 | ||
1768 | * Better dynamic linking support in SunOS | |
1769 | ||
1770 | Reading symbols from shared libraries which contain debugging symbols | |
1771 | now works properly. However, there remain issues such as automatic | |
1772 | skipping of `transfer vector' code during function calls, which | |
1773 | make it harder to debug code in a shared library, than to debug the | |
1774 | same code linked statically. | |
1775 | ||
1776 | * New Getopt | |
1777 | ||
1778 | GDB is now using the latest `getopt' routines from the FSF. This | |
1779 | version accepts the -- prefix for options with long names. GDB will | |
1780 | continue to accept the old forms (-option and +option) as well. | |
1781 | Various single letter abbreviations for options have been explicity | |
1782 | added to the option table so that they won't get overshadowed in the | |
1783 | future by other options that begin with the same letter. | |
1784 | ||
1785 | * Bugs fixed | |
1786 | ||
1787 | The `cleanup_undefined_types' bug that many of you noticed has been squashed. | |
1788 | Many assorted bugs have been handled. Many more remain to be handled. | |
1789 | See the various ChangeLog files (primarily in gdb and bfd) for details. | |
1790 | ||
1791 | ||
1792 | *** Changes in GDB-4.3: | |
1793 | ||
1794 | * New machines supported (host and target) | |
1795 | ||
1796 | Amiga 3000 running Amix m68k-cbm-svr4 or amix | |
1797 | NCR 3000 386 running SVR4 i386-ncr-svr4 or ncr3000 | |
1798 | Motorola Delta 88000 running Sys V m88k-motorola-sysv or delta88 | |
1799 | ||
1800 | * Almost SCO Unix support | |
1801 | ||
1802 | We had hoped to support: | |
1803 | SCO Unix on i386 IBM PC clones i386-sco-sysv or i386sco | |
1804 | (except for core file support), but we discovered very late in the release | |
1805 | that it has problems with process groups that render gdb unusable. Sorry | |
1806 | about that. I encourage people to fix it and post the fixes. | |
1807 | ||
1808 | * Preliminary ELF and DWARF support | |
1809 | ||
1810 | GDB can read ELF object files on System V Release 4, and can handle | |
1811 | debugging records for C, in DWARF format, in ELF files. This support | |
1812 | is preliminary. If you bring up GDB on another SVR4 system, please | |
1813 | send mail to bug-gdb@prep.ai.mit.edu to let us know what changes were | |
1814 | reqired (if any). | |
1815 | ||
1816 | * New Readline | |
1817 | ||
1818 | GDB now uses the latest `readline' library. One user-visible change | |
1819 | is that two tabs will list possible command completions, which previously | |
1820 | required typing M-? (meta-question mark, or ESC ?). | |
1821 | ||
1822 | * Bugs fixed | |
1823 | ||
1824 | The `stepi' bug that many of you noticed has been squashed. | |
1825 | Many bugs in C++ have been handled. Many more remain to be handled. | |
1826 | See the various ChangeLog files (primarily in gdb and bfd) for details. | |
1827 | ||
1828 | * State of the MIPS world (in case you wondered): | |
1829 | ||
1830 | GDB can understand the symbol tables emitted by the compilers | |
1831 | supplied by most vendors of MIPS-based machines, including DEC. These | |
1832 | symbol tables are in a format that essentially nobody else uses. | |
1833 | ||
1834 | Some versions of gcc come with an assembler post-processor called | |
1835 | mips-tfile. This program is required if you want to do source-level | |
1836 | debugging of gcc-compiled programs. I believe FSF does not ship | |
1837 | mips-tfile with gcc version 1, but it will eventually come with gcc | |
1838 | version 2. | |
1839 | ||
1840 | Debugging of g++ output remains a problem. g++ version 1.xx does not | |
1841 | really support it at all. (If you're lucky, you should be able to get | |
1842 | line numbers and stack traces to work, but no parameters or local | |
1843 | variables.) With some work it should be possible to improve the | |
1844 | situation somewhat. | |
1845 | ||
1846 | When gcc version 2 is released, you will have somewhat better luck. | |
1847 | However, even then you will get confusing results for inheritance and | |
1848 | methods. | |
1849 | ||
1850 | We will eventually provide full debugging of g++ output on | |
1851 | DECstations. This will probably involve some kind of stabs-in-ecoff | |
1852 | encapulation, but the details have not been worked out yet. | |
1853 | ||
1854 | ||
1855 | *** Changes in GDB-4.2: | |
1856 | ||
1857 | * Improved configuration | |
1858 | ||
1859 | Only one copy of `configure' exists now, and it is not self-modifying. | |
1860 | Porting BFD is simpler. | |
1861 | ||
1862 | * Stepping improved | |
1863 | ||
1864 | The `step' and `next' commands now only stop at the first instruction | |
1865 | of a source line. This prevents the multiple stops that used to occur | |
1866 | in switch statements, for-loops, etc. `Step' continues to stop if a | |
1867 | function that has debugging information is called within the line. | |
1868 | ||
1869 | * Bug fixing | |
1870 | ||
1871 | Lots of small bugs fixed. More remain. | |
1872 | ||
1873 | * New host supported (not target) | |
1874 | ||
1875 | Intel 386 PC clone running Mach i386-none-mach | |
1876 | ||
1877 | ||
1878 | *** Changes in GDB-4.1: | |
1879 | ||
1880 | * Multiple source language support | |
1881 | ||
1882 | GDB now has internal scaffolding to handle several source languages. | |
1883 | It determines the type of each source file from its filename extension, | |
1884 | and will switch expression parsing and number formatting to match the | |
1885 | language of the function in the currently selected stack frame. | |
1886 | You can also specifically set the language to be used, with | |
1887 | `set language c' or `set language modula-2'. | |
1888 | ||
1889 | * GDB and Modula-2 | |
1890 | ||
1891 | GDB now has preliminary support for the GNU Modula-2 compiler, | |
1892 | currently under development at the State University of New York at | |
1893 | Buffalo. Development of both GDB and the GNU Modula-2 compiler will | |
1894 | continue through the fall of 1991 and into 1992. | |
1895 | ||
1896 | Other Modula-2 compilers are currently not supported, and attempting to | |
1897 | debug programs compiled with them will likely result in an error as the | |
1898 | symbol table is read. Feel free to work on it, though! | |
1899 | ||
1900 | There are hooks in GDB for strict type checking and range checking, | |
1901 | in the `Modula-2 philosophy', but they do not currently work. | |
1902 | ||
1903 | * set write on/off | |
1904 | ||
1905 | GDB can now write to executable and core files (e.g. patch | |
1906 | a variable's value). You must turn this switch on, specify | |
1907 | the file ("exec foo" or "core foo"), *then* modify it, e.g. | |
1908 | by assigning a new value to a variable. Modifications take | |
1909 | effect immediately. | |
1910 | ||
1911 | * Automatic SunOS shared library reading | |
1912 | ||
1913 | When you run your program, GDB automatically determines where its | |
1914 | shared libraries (if any) have been loaded, and reads their symbols. | |
1915 | The `share' command is no longer needed. This also works when | |
1916 | examining core files. | |
1917 | ||
1918 | * set listsize | |
1919 | ||
1920 | You can specify the number of lines that the `list' command shows. | |
1921 | The default is 10. | |
1922 | ||
1923 | * New machines supported (host and target) | |
1924 | ||
1925 | SGI Iris (MIPS) running Irix V3: mips-sgi-irix or iris | |
1926 | Sony NEWS (68K) running NEWSOS 3.x: m68k-sony-sysv or news | |
1927 | Ultracomputer (29K) running Sym1: a29k-nyu-sym1 or ultra3 | |
1928 | ||
1929 | * New hosts supported (not targets) | |
1930 | ||
1931 | IBM RT/PC: romp-ibm-aix or rtpc | |
1932 | ||
1933 | * New targets supported (not hosts) | |
1934 | ||
1935 | AMD 29000 embedded with COFF a29k-none-coff | |
1936 | AMD 29000 embedded with a.out a29k-none-aout | |
1937 | Ultracomputer remote kernel debug a29k-nyu-kern | |
1938 | ||
1939 | * New remote interfaces | |
1940 | ||
1941 | AMD 29000 Adapt | |
1942 | AMD 29000 Minimon | |
1943 | ||
1944 | ||
1945 | *** Changes in GDB-4.0: | |
1946 | ||
1947 | * New Facilities | |
1948 | ||
1949 | Wide output is wrapped at good places to make the output more readable. | |
1950 | ||
1951 | Gdb now supports cross-debugging from a host machine of one type to a | |
1952 | target machine of another type. Communication with the target system | |
1953 | is over serial lines. The ``target'' command handles connecting to the | |
1954 | remote system; the ``load'' command will download a program into the | |
1955 | remote system. Serial stubs for the m68k and i386 are provided. Gdb | |
1956 | also supports debugging of realtime processes running under VxWorks, | |
1957 | using SunRPC Remote Procedure Calls over TCP/IP to talk to a debugger | |
1958 | stub on the target system. | |
1959 | ||
1960 | New CPUs supported include the AMD 29000 and Intel 960. | |
1961 | ||
1962 | GDB now reads object files and symbol tables via a ``binary file'' | |
1963 | library, which allows a single copy of GDB to debug programs of multiple | |
1964 | object file types such as a.out and coff. | |
1965 | ||
1966 | There is now a GDB reference card in "doc/refcard.tex". (Make targets | |
1967 | refcard.dvi and refcard.ps are available to format it). | |
1968 | ||
1969 | ||
1970 | * Control-Variable user interface simplified | |
1971 | ||
1972 | All variables that control the operation of the debugger can be set | |
1973 | by the ``set'' command, and displayed by the ``show'' command. | |
1974 | ||
1975 | For example, ``set prompt new-gdb=>'' will change your prompt to new-gdb=>. | |
1976 | ``Show prompt'' produces the response: | |
1977 | Gdb's prompt is new-gdb=>. | |
1978 | ||
1979 | What follows are the NEW set commands. The command ``help set'' will | |
1980 | print a complete list of old and new set commands. ``help set FOO'' | |
1981 | will give a longer description of the variable FOO. ``show'' will show | |
1982 | all of the variable descriptions and their current settings. | |
1983 | ||
1984 | confirm on/off: Enables warning questions for operations that are | |
1985 | hard to recover from, e.g. rerunning the program while | |
1986 | it is already running. Default is ON. | |
1987 | ||
1988 | editing on/off: Enables EMACS style command line editing | |
1989 | of input. Previous lines can be recalled with | |
1990 | control-P, the current line can be edited with control-B, | |
1991 | you can search for commands with control-R, etc. | |
1992 | Default is ON. | |
1993 | ||
1994 | history filename NAME: NAME is where the gdb command history | |
1995 | will be stored. The default is .gdb_history, | |
1996 | or the value of the environment variable | |
1997 | GDBHISTFILE. | |
1998 | ||
1999 | history size N: The size, in commands, of the command history. The | |
2000 | default is 256, or the value of the environment variable | |
2001 | HISTSIZE. | |
2002 | ||
2003 | history save on/off: If this value is set to ON, the history file will | |
2004 | be saved after exiting gdb. If set to OFF, the | |
2005 | file will not be saved. The default is OFF. | |
2006 | ||
2007 | history expansion on/off: If this value is set to ON, then csh-like | |
2008 | history expansion will be performed on | |
2009 | command line input. The default is OFF. | |
2010 | ||
2011 | radix N: Sets the default radix for input and output. It can be set | |
2012 | to 8, 10, or 16. Note that the argument to "radix" is interpreted | |
2013 | in the current radix, so "set radix 10" is always a no-op. | |
2014 | ||
2015 | height N: This integer value is the number of lines on a page. Default | |
2016 | is 24, the current `stty rows'' setting, or the ``li#'' | |
2017 | setting from the termcap entry matching the environment | |
2018 | variable TERM. | |
2019 | ||
2020 | width N: This integer value is the number of characters on a line. | |
2021 | Default is 80, the current `stty cols'' setting, or the ``co#'' | |
2022 | setting from the termcap entry matching the environment | |
2023 | variable TERM. | |
2024 | ||
2025 | Note: ``set screensize'' is obsolete. Use ``set height'' and | |
2026 | ``set width'' instead. | |
2027 | ||
2028 | print address on/off: Print memory addresses in various command displays, | |
2029 | such as stack traces and structure values. Gdb looks | |
2030 | more ``symbolic'' if you turn this off; it looks more | |
2031 | ``machine level'' with it on. Default is ON. | |
2032 | ||
2033 | print array on/off: Prettyprint arrays. New convenient format! Default | |
2034 | is OFF. | |
2035 | ||
2036 | print demangle on/off: Print C++ symbols in "source" form if on, | |
2037 | "raw" form if off. | |
2038 | ||
2039 | print asm-demangle on/off: Same, for assembler level printouts | |
2040 | like instructions. | |
2041 | ||
2042 | print vtbl on/off: Prettyprint C++ virtual function tables. Default is OFF. | |
2043 | ||
2044 | ||
2045 | * Support for Epoch Environment. | |
2046 | ||
2047 | The epoch environment is a version of Emacs v18 with windowing. One | |
2048 | new command, ``inspect'', is identical to ``print'', except that if you | |
2049 | are running in the epoch environment, the value is printed in its own | |
2050 | window. | |
2051 | ||
2052 | ||
2053 | * Support for Shared Libraries | |
2054 | ||
2055 | GDB can now debug programs and core files that use SunOS shared libraries. | |
2056 | Symbols from a shared library cannot be referenced | |
2057 | before the shared library has been linked with the program (this | |
2058 | happens after you type ``run'' and before the function main() is entered). | |
2059 | At any time after this linking (including when examining core files | |
2060 | from dynamically linked programs), gdb reads the symbols from each | |
2061 | shared library when you type the ``sharedlibrary'' command. | |
2062 | It can be abbreviated ``share''. | |
2063 | ||
2064 | sharedlibrary REGEXP: Load shared object library symbols for files | |
2065 | matching a unix regular expression. No argument | |
2066 | indicates to load symbols for all shared libraries. | |
2067 | ||
2068 | info sharedlibrary: Status of loaded shared libraries. | |
2069 | ||
2070 | ||
2071 | * Watchpoints | |
2072 | ||
2073 | A watchpoint stops execution of a program whenever the value of an | |
2074 | expression changes. Checking for this slows down execution | |
2075 | tremendously whenever you are in the scope of the expression, but is | |
2076 | quite useful for catching tough ``bit-spreader'' or pointer misuse | |
2077 | problems. Some machines such as the 386 have hardware for doing this | |
2078 | more quickly, and future versions of gdb will use this hardware. | |
2079 | ||
2080 | watch EXP: Set a watchpoint (breakpoint) for an expression. | |
2081 | ||
2082 | info watchpoints: Information about your watchpoints. | |
2083 | ||
2084 | delete N: Deletes watchpoint number N (same as breakpoints). | |
2085 | disable N: Temporarily turns off watchpoint number N (same as breakpoints). | |
2086 | enable N: Re-enables watchpoint number N (same as breakpoints). | |
2087 | ||
2088 | ||
2089 | * C++ multiple inheritance | |
2090 | ||
2091 | When used with a GCC version 2 compiler, GDB supports multiple inheritance | |
2092 | for C++ programs. | |
2093 | ||
2094 | * C++ exception handling | |
2095 | ||
2096 | Gdb now supports limited C++ exception handling. Besides the existing | |
2097 | ability to breakpoint on an exception handler, gdb can breakpoint on | |
2098 | the raising of an exception (before the stack is peeled back to the | |
2099 | handler's context). | |
2100 | ||
2101 | catch FOO: If there is a FOO exception handler in the dynamic scope, | |
2102 | set a breakpoint to catch exceptions which may be raised there. | |
2103 | Multiple exceptions (``catch foo bar baz'') may be caught. | |
2104 | ||
2105 | info catch: Lists all exceptions which may be caught in the | |
2106 | current stack frame. | |
2107 | ||
2108 | ||
2109 | * Minor command changes | |
2110 | ||
2111 | The command ``call func (arg, arg, ...)'' now acts like the print | |
2112 | command, except it does not print or save a value if the function's result | |
2113 | is void. This is similar to dbx usage. | |
2114 | ||
2115 | The ``up'' and ``down'' commands now always print the frame they end up | |
2116 | at; ``up-silently'' and `down-silently'' can be used in scripts to change | |
2117 | frames without printing. | |
2118 | ||
2119 | * New directory command | |
2120 | ||
2121 | 'dir' now adds directories to the FRONT of the source search path. | |
2122 | The path starts off empty. Source files that contain debug information | |
2123 | about the directory in which they were compiled can be found even | |
2124 | with an empty path; Sun CC and GCC include this information. If GDB can't | |
2125 | find your source file in the current directory, type "dir .". | |
2126 | ||
2127 | * Configuring GDB for compilation | |
2128 | ||
2129 | For normal use, type ``./configure host''. See README or gdb.texinfo | |
2130 | for more details. | |
2131 | ||
2132 | GDB now handles cross debugging. If you are remotely debugging between | |
2133 | two different machines, type ``./configure host -target=targ''. | |
2134 | Host is the machine where GDB will run; targ is the machine | |
2135 | where the program that you are debugging will run. |