Commit Graph

43 Commits

Author SHA1 Message Date
Michael Lotz
5b9d5a2ec9 * Add has_debugger_command() so whether or not a debugger command is available
can be checked.
* Make the usb_keyboard module check the presence of the needed debugger
  commands to avoid the error messages in case of them being unavailable.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29472 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-11 12:17:23 +00:00
Michael Lotz
6eba063647 * Added simplified possibility to schedule UHCI transfers from within KDL.
* Added debugger commands to resolve usb_ids to pipes.
* Adjusted the physical memory allocator to be usable in a slimmed down mode
  when running inside the kernel debugger.
* Implemented USB keyboard support for KDL through a kernel debugger add-on.
* Added kgetc() and made use of it where previously individual methods were used
  to ensure that reading characters always goes through the kernel debugger
  add-ons and the other methods.

This has some preconditions to meet though:
1) The keyboard must be in the boot protocol (currently the case but needs to
   be revisited once we have a full usb_hid).
2) The keyboard must be attached to a UHCI root port (i.e. not use EHCI or OHCI,
   also not through hubs unless those are USB 1.1).
3) the usb_hid driver has to be opened for this to work. This means that for the
   time between initializing USB and when usb_hid is opened by the input_server
   there is no keyboard support.

Also note that this has no way of detecting hot-plug, meaning that you can't
re-attach your USB keyboard from the hub to the root port once in KDL.

On the bright side of things, since this is a non-destructive mechanism it is
possible to enter and leave KDL without loosing the USB state.

Tested OK in QEMU, not tested on real hardware yet, will see in a few minutes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29291 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-22 20:46:27 +00:00
Ingo Weinhold
1894a0a98b Consistently use KDEBUG. It is always defined and therefore must be
checked with "#if".


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28247 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 13:06:04 +00:00
Ingo Weinhold
7ab39de989 * Removed unused SMP_MSG_RESCHEDULE ICI message.
* Introduced flag "invoke_scheduler" in the per CPU structure. It is
  evaluated in hardware_interrupt() (x86 only ATM).
* Introduced SMP_MSG_RESCHEDULE_IF_IDLE message, which enters the
  scheduler when the CPU currently runs an idle thread.
* Don't do dprintf() "CPU x halted!" when handling a SMP_MSG_CPU_HALT
  ICI message. It uses nested spinlocks and could thus potentially
  deadlock itself (acquire_spinlock() processes ICI messages, so it
  could already hold one of the locks). This is a pretty likely scenario
  on machines with more than two CPUs, but is also possible when the
  panic()ing thread holds the threads spinlock. Probably fixes #2572.
* Reworked the way the kernel debugger is entered and added a "cpu"
  command that allows switching the CPU once in KDL. It is thus possible
  to get a stack trace of the thread not on the panic()ing CPU.
* When a thread is added to the run queue, we do now check, if another
  CPU is idle and ask it to reschedule, if it is. Before this change, the
  CPU was continuing to idle until the quantum of the idle thread
  expired. Speeds up the libbe.so build about 8% on my machine (haven't
  tested the full Haiku image build yet).
* When spinlock debugging is enabled (DEBUG_SPINLOCKS) we also record
  the spinlock acquirer on non-smp machines. Added "spinlock" debugger
  command to get the info.
* Added debugger commands "ici" and "ici_message", printing info on
  pending ICI message respectively on a given one.
* Process not only a single ICI message in acquire_spinlock() and other
  places, but all pending ones.
* Also process ICI messages when waiting for a free one -- avoids a
  potential deadlock.
* Mask out non-existing CPUs in send_multicast_ici(). panic() instead of
  just returning when there's no target CPU left.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28223 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 18:14:08 +00:00
Michael Lotz
945a6a41ac bonefish + mmlr:
* Add possibility to restart a complete pipe through B_KDEBUG_RESTART_PIPE.
* Implement tail in the kernel debugger making use of the former.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28154 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-15 23:43:27 +00:00
Axel Dörfler
ddecb4a7da * Changed the way the demangle functionality works: instead of having a kernel
debugger add-on set a demangle hook, all modules under debugger/demangle/ are
  now considered demangle modules.
* Added another function to the demangle module interface that gives you access
  to the arguments.
* Implemented a demangling module for GCC2.
* The older demangling module is now called "gcc3+", but doesn't support
  getting the arguments yet.
* The "call" KDL command is now using demangling to automatically show you
  the arguments of a call from a stack crawl.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28018 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-12 23:50:41 +00:00
Ingo Weinhold
f8bdc2443d Created a central place for putting kernel debug enabling macros.
Currently it only contains KDEBUG and the block cache debugging macros.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27816 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-01 11:56:44 +00:00
Ingo Weinhold
290e3dd228 Introduced the notion of a currently debugged thread in the kernel
debugger and added respective getter/setter methods
debug_{get,set}_debugged_thread(). By default the currently debugged
thread is the thread that dropped into the kernel debugger, but commands
like "in_context" can change it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27164 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-22 23:54:49 +00:00
Ingo Weinhold
0deddbe36c Added function parse_next_debug_command_argument(), which parses the
first command line argument of a given command line string.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27155 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-22 15:38:57 +00:00
Ingo Weinhold
46ec230162 When in the kernel debugger we do now record the relevant information
(fault address, pc, read/write) when a page fault occurs, and print them
in case this caused the termination of a debugger command.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26949 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-12 17:09:42 +00:00
François Revol
8881176ff3 A module that hooks into the debugger to provide it with a demangle() so at least when using C++ in the kernel stack crawls are meaningful.
It does its job by using part of libsupc++, with fake malloc and friends to make sure it won't double fault.
Works here, but cp-demangle must be extracted by hand from the lib, can't get the rule to work as I want, Ingo ?
Maybe using it directly without malloc hack would be ok with 16KB buffer, but I'm not sure of that.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26581 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-07-23 16:08:16 +00:00
Michael Lotz
eb0dca1d33 Add a KDEBUG_ONLY macro for easier handling of code only needed in case of KDEBUG.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26483 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-07-18 02:05:27 +00:00
Ingo Weinhold
73aa393d73 * Introduced pipes in the kernel debugger. The syntax is similar to
pipes in the shell, though the semantics is a little different: The
  second command is invoked whenever the first command has written a
  complete line. The line is passed as last argument to the second
  command. The new command flag B_KDEBUG_PIPE_FINAL_RERUN causes the
  second command to be invoked again (with NULL argument) after the
  first command is done.
* Added kprintf_unfiltered() and kputs_unfiltered() which bypass the
  pipe mechanism and directly print to the bluescreen/serial output.
* Moved most commands from debug.cpp to the new
  debug_builtin_commands.cpp.
* B_KDEBUG_DONT_PARSE_ARGUMENTS commands don't get an argument anymore,
  if it would consist of white space only.
* Added new debugger command return value B_KDEBUG_ERROR, which
  indicates that executing the command failed. This return code will
  abort a complete pipe.
* Since debugger commands can nest (i.e. one command can invoke another
  one) the setjmp()/longjmp() mechanism to restore the stack after a
  page fault in a command needs more than one jump buffer.
* Added abort_debugger_command(), which longjmp()s out of the currently
  executed command. This will also abort the current pipe.
* When pagination is enabled pressing "a" will abort the running command
  (as opposed to "q" which only disables the blue screen output, but
  lets the command continue).
* Added debugger commands:
  - "grep" which can be used to filter output by pattern. Removed the
    "filter" command and the underlying mechanism that did that before.
  - "head" which prints only the first lines of output of another
    command.
  - "wc" counts lines, words, and characters of another command's
    output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25744 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-06-01 02:25:00 +00:00
Axel Dörfler
a886f802fc * Added debug_screen_output_enabled() function.
* The boot splash code now checks wether debug screen output is enabled or not
  using the above function.
* The boot splash code no longer maps it's own copy of the frame buffer, instead,
  it will use the boot item feature as the VESA driver does. Also removed the
  lock, as that's not needed at all.
* Renamed splash.cpp to boot_splash.cpp, and boot/splash.h to boot_splash.h
  (it's not part of the boot loader, but the kernel).
* Removed dead code from boot_splash.cpp, added license. Replaced license
  header in boot_splash.h to a style guide conforming one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24489 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-03-20 11:10:17 +00:00
François Revol
7f3937521f Add debugger module hooks to implement alternative io (I need laplink debugging...)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24052 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-02-21 22:41:49 +00:00
Axel Dörfler
3cec75dc33 * Debugger modules now have two methods: enter_debugger() and exit_debugger().
* The kernel now opens up to 8 debugger modules (and puts them into an array;
  maybe we'll want to switch to a doubly linked list when there is the need).
* Implemented an example debugger module that prints a stack trace of the
  current thread when the kernel debugger is entered (not included in the
  image).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23794 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-31 12:25:43 +00:00
Ingo Weinhold
325b88a661 * Introduced debugger command flag B_KDEBUG_DONT_PARSE_ARGUMENTS.
For commands with this flag set, the parser won't parse the
  arguments provided (it will only check for matching parentheses and
  brackets), but will pass the unparsed argument list string to the
  command instead.
* Set the new flag for the "expr" command, so one doesn't have to quote
  the expression to evaluate anymore (or put it in parentheses).
* Fixed tokenizing of quoted and unquoted strings in expression mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23697 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-21 23:25:34 +00:00
Ingo Weinhold
902425896d Made kputs() available in the kernel and used it for printing debugger
command usage texts, which can be too long for kprintf().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23677 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-21 00:15:33 +00:00
Ingo Weinhold
8a90d12e26 * Added add_debugger_command_etc() which is similar to
add_debugger_command(), but additionally takes parameters "usage"
  and "flags".
* Added add_debugger_command_alias() which creates another name for an
  existing command.
* Added print_debugger_command_usage() to print a command's usage.
* invoke_debugger_command() intercepts invocations with "--help" and
  prints the command's usage text, if it is known. If unknown, the
  command will be called normally.
* Made use of the new functions in debug.cpp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23573 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-16 23:41:20 +00:00
Ingo Weinhold
06f78e9fb7 * Changed the way temporary variables work. They won't be unset before
a command is executed anymore. Instead the least recently used
  temporary variable is overwritten, if there's no free slot for a new
  temporary variable.
* Removed the special handling for the command result variable ("_"). It
  just works like any other temporary variable, now.
* Individual temporary variables can be removed (e.g. using the "unset"
  command).
* Added unset_all_debug_variables() and "unset_all" command to unset
  all persistent and temporary variables.
* Removed remove_all_temporary_debug_variables and renamed
  remove_debug_variable() to unset_debug_variable().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23568 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-16 21:50:59 +00:00
Ingo Weinhold
3b4fa1664e * Implemented parse_expression(). The back-end is an expression parser
that is a little more powerful than BeOS'. It features:
  - Persistent and temporary uint64 variables. The former kind is set
    only by the user. The latter (those prefixed "_") can be set
    automatically by commands, thus e.g. making it easier to access
    members of a dumped structure. They are unset when the next command
    is invoked. The special temporary variable "_" is defined as a
    command's return value.
  - Expressions can contain nested command invocations using brackets
    ("[ ... ]").
  - Command lines are parsed by the expression parser, too. They can
    contain command invocations (in brackets) and expressions (in
    parentheses).
* Added debugger commands:
  - expr: Evaluates the given expression and prints the result.
  - unset: Undefines a variable.
  - vars: Prints the values of all defined variables.
* Moved debugger command code into its own source file.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23546 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-16 00:01:20 +00:00
Ingo Weinhold
76ab7bdcf8 Added function dprintf_no_syslog(). It is basically equivalent to
dprintf() with the exception that it doesn't write anything to the
syslog. The reason is that syslog_write() releases a semaphore and can
therefore not be invoked when the thread spinlock is held.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22428 a95241bf-73f2-0310-859d-f6bbb57e9c96
2007-10-03 22:14:53 +00:00
Ingo Weinhold
cf1539e1a3 Added debug macros ASSERT_ALWAYS_PRINT and ASSERT_PRINT which take
additional parameters that are fed into a dprintf() before panic() is
invoked.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21838 a95241bf-73f2-0310-859d-f6bbb57e9c96
2007-08-06 17:35:57 +00:00
Axel Dörfler
de52a13af7 Unconditionally enable all ASSERTs in the kernel for now; should obviously
be turned off for non-development releases later :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21691 a95241bf-73f2-0310-859d-f6bbb57e9c96
2007-07-23 00:59:30 +00:00
Travis Geiselbrecht
c9788912f0 re-enable kernel asserts.
Disabled by default, but all kernel devs are *highly* recommended to turn them on for your builds and see if it trips anything, and then fix it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21477 a95241bf-73f2-0310-859d-f6bbb57e9c96
2007-06-21 05:37:46 +00:00
Michael Lotz
f51fb4696c Corrected the repeat checks (did not compare the right buffers) and added a length argument to debug_puts() to safe the strlen in the syslog case. Also removed some leftover.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16991 a95241bf-73f2-0310-859d-f6bbb57e9c96
2006-04-03 20:48:30 +00:00
Axel Dörfler
924479179b Implemented on screen debug output during boot - to be enabled in the boot loader
safemode menu.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16081 a95241bf-73f2-0310-859d-f6bbb57e9c96
2006-01-25 16:12:10 +00:00
Axel Dörfler
2ed21b8525 Some work in progress of the MTRR support. Shouldn't do any harm yet :-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15525 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-12-13 00:06:52 +00:00
Axel Dörfler
67a7102658 Fixed a pretty fatal bug in the page fault handling: interrupts were enabled
even if "kernel_startup" was "true". Page faults are now no longer allowed
during kernel startup (and could be easily avoided). The only situation where
we accept page faults with interrupts turned off now is during a kernel debugger
session.
Added a command debug_debugger_running() to test for that situation.
kernel_debugger() no longer sets kernel_startup while it's running; there should
be no situation when this could be helpful.
Interrupts are no longer enabled when a page fault happens in the kernel
debugger.
This potentially fixes all sorts of problems, and not only in the kernel debugger,
it could also have affected SMP (will test later).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14045 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-08-21 23:27:51 +00:00
Axel Dörfler
ed65cbe349 The kernel debugger no longer uses dprintf() but kprintf() when printing
(dprintf() locks using acquire_spinlock() which can itself drop into the
kernel debugger, causing an endless loop (until the stack was full).
Removed debug_putchar().
The gdb interface is now calling arch_debug_serial_*() directly.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13882 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-08-02 16:25:27 +00:00
Axel Dörfler
f33c8020e2 Removed debug/console.c, we no longer need it. frame_buffer_console_init() is now
called by debug_init_post_vm().
Since the availability of a blue screen specific getchar() is static anyway, there
is no need for the sBlueScreenGetChar variable (only the message "only serial input
available" gets lost, but since that is platform specific anyway...).
Hello blue screen! We now have an on-screen KDL, to be enabled by the kernel
setting "bluescreen", just like on BeOS.
The blue screen does not yet support any cursor actions or backspace, though (need
to grab some stuff from our console driver).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12896 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-05-29 16:23:00 +00:00
Axel Dörfler
9a63135f7c Cleanup of the debug stuff, prepared for blue screen debugging.
kernel_debugger() didn't do enough before; panic() did all the work - but
since the former is a public function as well, I moved all the functionality
to it. Also fixed a possible buffer overrun in panic().
Renamed dbg_* to debug_*.
"serial_debug_port" setting did not ignore negative values.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12889 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-05-29 13:01:38 +00:00
Axel Dörfler
74b043d98d Removed execute property that was set accidently (since CVS days).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11896 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-03-18 01:50:45 +00:00
Axel Dörfler
b0d8e689ac Renamed some more init2 routines to init_post_vm() to make it clearer when
and why they are called.
Introduced a cpu_init_post_vm() that will now call arch_init_post_vm() instead
of letting main() doing it.
Fixed some return types (mostly from int to status_t).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9438 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-10-21 01:41:29 +00:00
Axel Dörfler
adbaa7817e It's now B_MAX_CPU_COUNT rather than SMP_MAX_CPUS.
Removed unused headers.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7608 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-05-18 09:42:13 +00:00
Axel Dörfler
9289abf0e4 Added _kern_debug_output() syscall.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5353 a95241bf-73f2-0310-859d-f6bbb57e9c96
2003-11-13 22:07:36 +00:00
Axel Dörfler
3d78db8f17 Removed B_KDEBUG_* definitions; they are already part of KernelExport.h.
dbg_register_file[][] reserves now space for SMP_MAX_CPUS CPUs.
Removed old dbg_{set|get}_serial_debug() functions.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5308 a95241bf-73f2-0310-859d-f6bbb57e9c96
2003-11-11 04:01:31 +00:00
Axel Dörfler
564cba312e Some header work: removed unnecessary dependencies to stage2.h, fixed
some broken C++ export definitions, added missing licenses etc.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3152 a95241bf-73f2-0310-859d-f6bbb57e9c96
2003-05-03 16:03:26 +00:00
beveloper
60d9ed9e3b fixed the ASSERT macro, it did not even compile if DEBUG was defined
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2102 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-11-28 14:07:28 +00:00
lillo
5cdacbaabb *LOTS* of small changes to make the kernel compatible with Be's KernelExport.h
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1683 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-10-26 16:13:36 +00:00
Axel Dörfler
2b5d1dc418 Added the preliminary ASSERT() macro from NewOS.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@310 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-07-18 18:45:07 +00:00
Philippe Houdoin
3b333c3bd1 dbg_add_command() changed into BeOS compatible add_debugger_command().
remove_debugger_command() added.
Fix cmd_gdb() prototype according to new debugger command one.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@290 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-07-17 22:10:34 +00:00
ejakowatz
52a3801208 It is accomplished ...
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-07-09 12:24:59 +00:00