Commit Graph

138751 Commits

Author SHA1 Message Date
John Baldwin
3461a0f244 Rework how kgdb manages kernel and vmcore files to be a bit more gdb-ish
so that kgdb can be used more like a normal gdb:
- Load the kernel via the standard 'exec' target and allow it to be changed
  via the 'file' command.
  - Instead of explicitly loading the kernel file as the mail symbol file
    during startup, just pass it to gdb_main() as the executable file.
  - Change the kld support (via shared libraries) to cache the address of
    the linker_files and linker_kernel_file variables in addition to the
    offsets of various members in 'struct linker_file'.
  - When a new symbol file is loaded, recompute the addresses and offsets
    used by the kld support code.
  - When a new symbol file is loaded, recalculate the ofs_fix variable to
    account for the different ways a trapframe can be passed to trap
    frame handlers in i386.  This is done by adding a MD
    kgdb_trgt_new_objfile() hook that is empty on all but i386.
  - Don't use the directory name of the kernel specified on the command
    line to find kernel modules in the kld support code.  Instead,
    extract the filename of the current executable via exec_bfd.  Now
    the 'kernel' variable is private to main.c again.
  - Make the 'add-kld' command explicitly fail if no executable is loaded.
- Make the support for vmcores a real core-dump target that opens the
  kernel and vmcore on open and closes the kvm connection when closed, etc.
  - The 'core' command can now be used to select a vmcore to use, either
    a crash dump file or /dev/mem for live debugging.
  - The 'detach' command can be used to detach from a vmcore w/o attaching
    to a new one.
  - kgdb no longer explicitly opens a core dump during startup and no longer
    has to use an atexit() hook to close the kvm connection on shutdown.
  - Symbols for kld's are automatically loaded anytime a core is opened.
    Also, the unread portion of dmesg is dumped just as it was done on kgdb
    startup previously.
- Don't require either a remote target or core dump if a kernel is specified.
  You can now just run 'kgdb kernel' similar to running gdb on an executable
  and later connect to a remote target or core dump.
- Use a more relaxed way to verify remote targets specified via -r.
  Instead of explicitly allowing a few non-file target specifications,
  just assume that if stat() on the arg and on "/dev/" + arg both fail
  that is some non-file target and pass it to gdb.
- Don't use a custom interpreter.  The existing kgdb_init() hook and the
  target_new_objfile() hook give us sufficient hooks during startup to
  setup kgdb-specific behavior now.
- Always add the 'proc', 'tid', and 'add-kld' commands on startup and not
  just if we have a core dump.  Currently the 'proc' and 'tid' commands do
  not work for remote targets (I will fix at least 'tid' in the next round
  of changes though).  However, the 'add-kld' command works fine for
  loading symbols for a kernel module on a remote target.
- Always setup the 'kld' shared library target operations instead of just
  if we have a core dump.  Although symbols for kernel modules are not
  automatically loaded when connecting to a remote target, you can do
  'info sharedlibrary' after connecting to the remote target and kgdb will
  find all the modules.  You can then use the 'sharedlibrary' command to
  load symbols from the module files.
- Change kthr_init() to free the existing list of kthr objects before
  generating a new one.  This allows it to be invoked multiple times
  w/o leaking memory.

MFC after:	1 week
2008-04-29 20:32:45 +00:00
Warner Losh
0f95e62599 More recommendations 2008-04-29 19:55:18 +00:00
John Baldwin
38cc658ff6 Add support for the BCM5906[M] adapters. These adapters only support
10/100 operation and place the mailbox registers at a different offset.
They also do not have an EEPROM, so the MAC address must be read from
NVRAM instead.

MFC after:	1 month
PR:		kern/118975
Submitted by:	benjsc, Thomas Nyström  thn at saeab dot se
Submitted by:	sephe (original patch for DragonflyBSD)
2008-04-29 19:47:13 +00:00
John Baldwin
624e4d168d - Add a global variable 'fbsdcoreops_suppress_target' that can be set to
force the FreeBSD multithreaded core target to not register any target
  for handling core dumps.  This is analogous to the
  'coreops_suppress_target' variable that GDB provides for suppressing the
  default core dump target.  KGDB will use this new variable so it can
  provide its own core dump target that uses libkvm to work with vmcore
  files.
- Adjust the long name and documentation of the FreeBSD multithreaded core
  dump target so it better matches what GDB's core dump target uses.

MFC after:	1 week
Reviewed by:	davidxu, marcel
2008-04-29 17:47:25 +00:00
Ruslan Ermilov
967f568996 _setjmp.o was missing a dependency on "machine". 2008-04-29 17:42:42 +00:00
Ruslan Ermilov
692411eece Don't forget to clean the "machine" symlink on amd64, otherwise bad
things may happen.

Reported by:	phk
MFC after:	3 days
2008-04-29 17:37:01 +00:00
Poul-Henning Kamp
f3344cb58f This bloke has his priorities straight:
+"Can you be more stupid than aggravating the judge AND your lawyer?
+No? Oh yes you can: You can aggravate the whole kernel community."
+               -- Alexander Lyamin (about Hans Reisers murder trial)

Found at: http://www.news.com/8301-10784_3-9925607-7.html?tag=nefd.top
2008-04-29 13:02:21 +00:00
Oleksandr Tymoshenko
578328c977 Define INLINE_LIMIT and additional CFLAGS for mips.
Approved by:	cognet (mentor)
2008-04-29 11:28:10 +00:00
Oleksandr Tymoshenko
ac0ddd0bc4 Define KINFO_PROC_SIZE for mips.
Approved by:	cognet (mentor)
2008-04-29 11:17:45 +00:00
Robert Watson
fbf4979ac2 Mention -U and -ai arguments to mergemaster in a comment for the
general mergemaster line.

MFC after:	3 days
Suggested by:	Ben Laurie
2008-04-29 09:08:33 +00:00
Pawel Jakub Dawidek
6e679990b9 Fix some section references. 2008-04-29 08:16:05 +00:00
Pawel Jakub Dawidek
f1025ba7c7 The referenced section name is 'Formats', not 'FORMATS'. 2008-04-29 07:35:31 +00:00
Ruslan Ermilov
562f2f71eb Don't depend on the modification time of the "zfs" subdir. 2008-04-29 06:54:12 +00:00
Ruslan Ermilov
24c9b0c84e - Fix makefile so it doesn't break the build in some corner cases. [1]
- Remove an extra copy of zfs.c.

Reported by:	yar [1]
2008-04-29 06:48:00 +00:00
David Xu
3bba58f287 Fix compiling problem. 2008-04-29 05:48:05 +00:00
David Xu
8d6a11a070 Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save
time in kernel(avoid VM lookup).
2008-04-29 03:58:18 +00:00
David Xu
727158f6f6 Introduce command UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE
to allow userland to specify that an address is not shared by multiple
processes.
2008-04-29 03:48:48 +00:00
Jason Evans
e3085308be Check for integer overflow before calling sbrk(2), since it uses a
signed increment argument, but the size is an unsigned integer.
2008-04-29 01:32:42 +00:00
Warner Losh
aec0c4d822 mention DX8400/50 2008-04-29 00:53:12 +00:00
Warner Losh
8c3fa7a2c8 Add Epson DX8400 scanner.
PR: 123148
Submitted by: Bill Squire
2008-04-29 00:51:20 +00:00
Xin LI
b6d9e1f355 ANSIfy function prototypes. While I am there, constify some parameters and
make use of C99 sparse initialization for static variables, this makes talk(1)
to compile cleanly with WARNS=6.
2008-04-28 21:08:42 +00:00
Jung-uk Kim
f81a2a4956 Check packet directions more properly instead of just checking received
interface is null.

PR:		kern/123138
Submitted by:	Dmitry (hanabana at mail dot ru)
MFC after:	1 week
2008-04-28 19:42:11 +00:00
John Baldwin
34f36b232b Use kgdb_parse() instead of libkvm(3) to read the first instruction from
"calltrap" to see which method is used to pass trap frames.  This seg
faulted on remote gdb connections (where libkvm isn't used).

MFC after:	3 days
2008-04-28 18:27:19 +00:00
Alan Cox
2bc24aa956 Eliminate pointless casts from kmem_suballoc(). 2008-04-28 17:25:27 +00:00
Robert Watson
7ee52b008a Correct minor typos in SCTP man pages.
MFC after:	3 days
2008-04-28 16:57:56 +00:00
John Baldwin
064e8b005f Remove the 'add_kld_command' arg from load_kld(). It is always true since
the auto-loading of kld's switched to hooking into gdb's shared library
support.

MFC after:	1 week
2008-04-28 15:26:11 +00:00
Oleksandr Tymoshenko
04e109f098 Handle endianness for mips
Approved by:	cognet (mentor)
2008-04-28 14:54:17 +00:00
Pawel Jakub Dawidek
f6a83858fc Document 'show mount' command. 2008-04-28 14:11:23 +00:00
Stefan Farfeleder
d9d588d495 Sigh, when reapplying the patch to HEAD, I somehow forgot to commit this file.
Reported by:	Jaakko Heinonen
2008-04-28 07:26:34 +00:00
Alan Cox
b8ca4ef2e3 vm_map_fixed(), unlike vm_map_find(), does not update "addr", so it can be
passed by value.
2008-04-28 05:30:23 +00:00
Marcel Moolenaar
01d8aa0d31 The first argment of mtdbatu or mtibatu is part of the encoding.
It needs to be constant, so eliminate the loop and "hand-unroll".
2008-04-28 03:04:41 +00:00
Marcel Moolenaar
12640815f8 MFp4: SMP support 2008-04-27 22:33:43 +00:00
Sam Leffler
7de3bc26a5 restore the hal's channel list when doing getradiocaps so it's in sync with
the 802.11 layer's list
2008-04-27 22:03:56 +00:00
Marcel Moolenaar
b66bd41daa Eliminate track_modified_needed(), better known as pmap_track_modified()
on other platforms.  We no longer need it because we do not create managed
mappings within the clean submap.

Pointed out by: alc
2008-04-27 21:04:54 +00:00
Stefan Farfeleder
39376f45e2 - Fix bugs where the value of arithmetic expansion$((...)) was trucated
to type int.
- Change the type used for arithmetic expansion to intmax_t (ie. 64 bit on all
  currently supported FreeBSD architectures).  SUSv3 requires at least type
  long but allows for larger types.  Other shells (eg. bash, zsh, NetBSD's sh)
  do that too.

PR:		122659
Submitted by:	Jaakko Heinonen (minor modifications by me)
2008-04-27 20:46:45 +00:00
Marcel Moolenaar
9d5a22b928 MFp4: SMP support 2008-04-27 19:51:34 +00:00
Marcel Moolenaar
5f99a64689 Make sure tmpstk is aligned and make it 8KB in size -- not 8KB+16. 2008-04-27 19:03:14 +00:00
Marcel Moolenaar
b0735d8073 Add support files for compiling with soft-float. This has been
copied from ARM and modified to warrant the duplication. Oh,
and to make it work for PowerPC :-)
2008-04-27 18:34:34 +00:00
Marcel Moolenaar
6937461ee9 Remove mfsvr():
o  The function is defined unconditionally but depends on SPR_SVR,
   which is defined conditionally.
o  spr.h defines mfspr() and mtspr(), which is no worse to use.
2008-04-27 17:13:22 +00:00
Robert Watson
fa9e0a18af Fix include guard spelling.
MFC after:	3 days
Submitted by:	diego
2008-04-27 15:51:49 +00:00
Robert Watson
ae11a989e6 When writing trailers in sendfile(2), don't call kern_writev()
while holding the socket buffer lock.  These leads to an
immediate panic due to recursing the socket buffer lock.  This
bug was introduced in uipc_syscalls.c:1.240, but masked by
another bug until that was fixed in uipc_syscalls.c:1.269.

Note that the current fix isn't perfect, but better than
panicking: normally we guarantee that simultaneous invocations
of a system call to write on a stream socket won't be
interlaced, which is ensured by use of the socket buffer sleep
lock.  This is guaranteed for the sendfile headers, but not
trailers.  In practice, this is likely not a problem, but
should be fixed.

MFC after:	3 days
Pointy hat to:	andre (1.240), cperciva (1.269)
2008-04-27 15:50:00 +00:00
Warner Losh
5318f8408b Add a breif example for the wlan change. Include an explicit pointer
to rc.conf(5) to remind people where to look for all the details.
People without network connectivity forget basics like this...  This
is in keeping with historic UPDATING entries which try to provide
basic information in the entry, and a pointer to more extensive
information documenting the new thing.
2008-04-27 04:07:36 +00:00
Alan Cox
d72d204094 Remove two unused declarations. These variables are now fields within
vm.h's struct kva_md_info.
2008-04-27 00:10:45 +00:00
Alan Cox
d239bfe45a Remove an XXX comment. sys/amd64/amd64/pmap.c revision 1.516 explains why
"pmap_initialized" no longer exists.
2008-04-27 00:06:01 +00:00
Alan Cox
3086a7a9b4 MFamd64 revision 1.544/i386 revision 1.549
Retire pmap_track_modified().  We no longer need it because we do not
  create managed mappings within the clean submap.  To prevent regressions,
  add assertions blocking the creation of managed mappings within the clean
  submap.

Approved by: imp
2008-04-26 22:39:58 +00:00
Yaroslav Tykhiy
891c55ab8d Add a missing quote symbol. 2008-04-26 22:15:03 +00:00
Yaroslav Tykhiy
80a48bc576 Just met Kurt Vonnegut's quote remarkably relevant
to open software development (as well as to the other
kinds of human activity.)
2008-04-26 22:12:31 +00:00
Marcel Moolenaar
46c00da6b5 Include the QUICC bus front-end in the module for PowerPC. 2008-04-26 18:41:42 +00:00
Marcel Moolenaar
6239f9e5f1 With rev 1.24 of sys/powerpc/powermac/macio.c, we now get a
total of 6 interrupt resources for scc(4) on macio(4). This
is 3 per channel, of which the 1st of each channel is the
interrupt associated with the SCC. The other 2 are for DMA
operation.
Change scc_bfe_attach() to accept an argument that's the
number of interrupts per channel (ipc) and change each bus
front-end (bfe) to pass that argument through a wrapper
for the device_attach method.

For now, we only allocate the 1st interrupt of each channel
to perserve behaviour.
2008-04-26 18:40:59 +00:00
Marcel Moolenaar
4924db935d Take into account the size of the interrupt cell. It's determined
by the parent for interrupt resources. This corrects parsing of
the interrupts property.

With parsing of the property fixed, add all interrupts to the
resource list. Bump the max. number of interrupts from 5 to 6
as scc(4) attached to macio(4) has 6 interrupts (3 per channel).

Submitted by: Nathan Whitehorn <nathanw@uchicago.edu>
2008-04-26 18:35:44 +00:00