Commit Graph

221 Commits

Author SHA1 Message Date
John Baldwin
551cf4e150 Rename the mutex thread and process states to use a more generic 'LOCK'
name instead.  (e.g., SLOCK instead of SMTX, TD_ON_LOCK() instead of
TD_ON_MUTEX())  Eventually a turnstile abstraction will be added that
will be shared with mutexes and other types of locks.  SLOCK/TDI_LOCK will
be used internally by the turnstile code and will not be specific to
mutexes.  Making the change now ensures that turnstiles can be dropped
in at a later date without affecting the ABI of userland applications.
2002-10-02 20:31:47 +00:00
Poul-Henning Kamp
c2476fafad Indentation indicates missing braces.
Spotted by:	FlexeLint
2002-10-01 21:59:46 +00:00
Poul-Henning Kamp
37c841831f Be consistent about "static" functions: if the function is marked
static in its prototype, mark it static at the definition too.

Inspired by:    FlexeLint warning #512
2002-09-28 17:15:38 +00:00
Mark Murray
bda9921d3f Constify to kill some warnings. 2002-09-21 17:29:36 +00:00
John Baldwin
c79408a059 Implement db_print_backtrace() if DDB is compiled into the kernel. This
MD function is just a wrapper around db_stack_trace_cmd() that prints out
a backtrace of curthread.  Currently, this function is only implemented
on i386 and alpha (and the alpha version isn't quite tested yet, will do
that in a bit).  Other changes:

- For i386, fix a bug in the raw frame address case.  The eip we extract
  from the passed in frame address does not match the frame we received.
  Thus, instead of printing a bogus frame with the wrong eip, go ahead
  and advance frame down to the same frame as the eip we are using.
- For alpha, attempt to add a way of doing a raw trace for alpha.  Instead
  of passing a frame address in 'addr', pass in a pointer to a structure
  containing PC and KSP and use those to start the backtrace.  The alpha
  db_print_backtrace() uses asm to read in the current PC and KSP values
  into such a request.

Tested on:	i386
Requested by:	many
2002-09-19 18:46:29 +00:00
Bruce Evans
1d47f58a3d Garbage-collected __ELF__ ifdefs.
Fixed some style bugs (mainly unused includes).
2002-09-15 22:28:39 +00:00
Bruce Evans
2ac73c2ce3 Don't use the ELF symbol type to summarily reject symbols in
X_db_search_symbol().  Otherwise we don't see important symbols in
non-verbosely written assembler code.

NetBSD already has this.  The kld version already has a stronger form
of it without really trying -- linker_ddb_search_symbol() doesn't
support ddb's symbol search strategy parameter, so the kld
X_db_search_symbol() doesn't pass the parameter to linker_ddb...() and
linker_ddb...() doesn't make distinctions based on the symbol type.

db_elf.c now works better than db_kld.c when it works (which is essentially
when there are no modules except the kernel).  It works after booting
with -d.  db_kld.c doesn't work until lots of SYSINIT()s have run.
2002-09-15 22:17:40 +00:00
Bruce Evans
abd368f09a Made this work on i386's at least. It wants ELF section headers for
symbol table sections.  Reconstruct the necessary section headers from
(ksym_start, ksym_end).  This was much easier than converting to use
module metadata, and just works for static symbols, unlike db_kld when
there is no module metadata.  Initialize (ksym_start, ksym_end) from
bootinfo on i386's only.

The boot loader should load section headers for all sections that it
loads, and apparently did this for at least the symbol table sections
when this file last worked under FreeBSD (on alphas only) and always
did this under NetBSD (where this file was obtained from).  At least
on i386's, boot2 discards the section headers (except for converting
them to (bootinfo.bi_symtab, bootinfo.bi_esymtab), and as far as I can
tell, loader(8) discards them apart from converting them to the bootinfo
values and module metadata.
2002-09-15 21:49:13 +00:00
Bruce Evans
f05c39e9d5 Made this compile (but not work). This involved mainly const poisoning
and renaming ALIGNED_POINTER() to _ALIGNED_POINTER() plus the following
hacks for i386's:
- define _ALIGNED_POINTER() if it is not already defined.  Most non-i386
  arches define it <machine/param.h> define it in <machine/param.h>,
  although none actually used it in the kernel.
- define ksym_start and ksym_end.  Most non-i386 arches still define and
  initialize these in machdep.c although they didn't used them.  Here is
  a better place to define them but not to initialize them.
2002-09-15 20:48:08 +00:00
Julian Elischer
71fad9fdee Completely redo thread states.
Reviewed by:	davidxu@freebsd.org
2002-09-11 08:13:56 +00:00
Bruce Evans
efdfb8fea3 db_ps.c:
Don't attempt to follow null pointers for zombie processes in db_ps().

Style fix: use explicit an comparison with NULL for all null pointer
checks in db_ps() instead of for half of them.

db_interface.c:
Fixed ddb's handling of traps from with ddb on i386's only.

This was mostly fixed in rev.1.27 (by longjmp()'ing back to the top
level) but was completly broken in rev.1.48 (by not unwinding the new
state (mainly db_active) either before or after the longjmp().  This
mostly never worked for other arches, since rev.1.27 has not been ported
and lower level longjmp()'s only handle traps for memory accesses.  All
cases should be handled at a lower level to provided better control and
simplify unwinding of state.

Implementation details: don't pretend to maintain db_active in a nested
way -- ddb cannot be reentered in a nested way.  Use db_active instead
of the db_global_jmpbuf_valid flag and longjmp()'s return value for things
related to reentering ddb.  [re]entering is still not atomic enough.
2002-08-31 04:25:44 +00:00
Juli Mallett
c96c380580 When talking about c_db_sym_t, mention that it is not just like db_sym_t:
it's const.

Inspired by:	bde
2002-08-14 17:56:47 +00:00
Poul-Henning Kamp
8ede8cbc50 Realign columns in DDB's ps output. Don't waste more horizontal space than
necessary.
2002-08-13 11:06:54 +00:00
Julian Elischer
e602ba25fd Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)

Reviewed by:	Almost everyone who counts
	(at various times, peter, jhb, matt, alfred, mini, bernd,
	and a cast of thousands)

	NOTE: this is still Beta code, and contains lots of debugging stuff.
	expect slight instability in signals..
2002-06-29 17:26:22 +00:00
Peter Wemm
160554fbf4 Remove a couple of __P() stragglers. 2002-06-29 02:32:34 +00:00
Thomas Moestl
358ad31d9a Don't assume that pointers are 4 bytes or sizeof(int) in size. This fixes
the indirection operator ('*') and address examination ('x/a') on
big-endian platoforms for which the above is not true, as well as on
little-endian platforms if the cut-off bits are not 0.
2002-06-25 15:59:24 +00:00
Maxime Henrion
53b3e91200 Split the declaration and the initialization of two variables.
This has the fortunate side effect of stopping GCC from
reporting warnings about unused variables on sparc64.

Reviewed by:	bde
2002-06-23 20:03:03 +00:00
Justin T. Gibbs
7102c89a86 Allow DB_SET() to set all fields in the ddb command structure. This
allows external ddb commands to do anyting an internal command can
do, including non-standard argument parsing if desired.
2002-06-05 19:00:02 +00:00
Bruce Evans
7085e70878 Reconnect db_elf.c to the build (now under "options DDB_NOKLDSYM"). It
doesn't actually build yet.
2002-05-07 10:59:52 +00:00
Bruce Evans
5eb6f4bc21 Restored db_elf.c from the Attic. This will be used for a quick fix for
the longstanding brokenness of symbols in ddb at boot time.  It doesn't
compile and is not attached to the build yet.
2002-05-06 00:05:44 +00:00
John Baldwin
5a882ddd66 Commented out locking that would be used in the ps command if locks were
used in ddb.
2002-04-11 21:01:34 +00:00
Bruce Evans
763df83622 Fixed some style bugs in the removal of __P(()). Continuation lines
were not outdented to preserve non-KNF lining up of code with parentheses.
Switch to KNF formatting.
2002-03-23 11:53:03 +00:00
Alfred Perlstein
14e10f9952 Remove __P. 2002-03-20 05:14:42 +00:00
Doug Rabson
a094749d89 Allow '.' in identifiers - some ia64 register names contain '.'. 2002-03-10 17:08:24 +00:00
Yaroslav Tykhiy
09ffa9ad5e ^U kills an entire input line in most applications,
including the default terminal canonical mode.
So let ddb(4) be no exception from this rule.

Pointed out by: Mark Peek <mark@peek.org>
2002-02-12 23:38:40 +00:00
Yaroslav Tykhiy
732681a789 Teach ddb(4) to delete to the beginning of its command line on ^U.
PR:		kern/28976
Submitted by:	Nickolai Zeldovich <kolya@orbit.zepa.net>
2002-02-11 14:14:42 +00:00
Julian Elischer
079b7badea Pre-KSE/M3 commit.
this is a low-functionality change that changes the kernel to access the main
thread of a process via the linked list of threads rather than
assuming that it is embedded in the process. It IS still embeded there
but remove all teh code that assumes that in preparation for the next commit
which will actually move it out.

Reviewed by: peter@freebsd.org, gallatin@cs.duke.edu, benno rice,
2002-02-07 20:58:47 +00:00
Matt Jacob
e30e3e9e48 pid is 'long' on alpha. 2002-01-17 02:14:44 +00:00
Dima Dorfman
19d2c78f34 Implement a "kill" DDB command which is an interface to psignal() that
respects locks.  Before SMPng, one was able to call psignal()
using the "call" command, but this is no longer possible because it
does not respect locks by itself.  This is very useful when one has
gotten their machine into a state where it is impossible to spawn
ps/kill or su to root.

In this case, respecting locks essentially means trying to aquire the
proc lock before calling psignal().  We can't block in the debugger,
so if trylock fails, the operation fails.  This also means that we
can't use pfind(), since that will attempt to lock the process for us.

Reviewed by:	jhb
2001-11-27 19:56:28 +00:00
Poul-Henning Kamp
9653928c02 GC the a.out support in DDB, nothing anywhere would pull this
file into a build.
2001-11-05 21:55:42 +00:00
Andrew R. Reiter
99b95aa20b - Include machine/md_var.h to get rid of cpu_reset() warning. (-Wall)
Approved by: jhb
2001-11-05 21:50:55 +00:00
Peter Wemm
5370c3b634 Add a 'reset' command. This is useful for panics really early before
any symbols are loaded.  Especially for unattended machines.
2001-11-03 04:55:48 +00:00
John Baldwin
c516499ad4 Make the flag field in the ps output one char wider to account for recent
growth in the number of flags used.  Also, if a thread is blocked on a
mutex, print the mutex name in the wait channel column.
2001-10-20 03:22:23 +00:00
Doug Rabson
3a0b4f259c Fill out some gaps in ia64 DDB support. This involves generalising DDB's
breakpoint handling slightly to cope with the fact that ia64 instructions
are not located on byte boundaries.
2001-09-15 11:06:07 +00:00
John Baldwin
14b418e7e9 - Whitespace fixes.
- Fix an old bug: p_comm is an array not a pointer, so it can't be NULL.`
2001-09-12 22:32:03 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
David E. O'Brien
680169040b No tokens should follow #endif. 2001-08-15 03:38:49 +00:00
Kris Kennaway
58d9a05948 Quiet a variable format-string warning.
MFC after:	1 week
2001-07-19 02:05:00 +00:00
Brian S. Dean
17bbfb5897 Add 'hwatch' and 'dhwatch' ddb commands analogous to 'watch' and
'dwatch'.  The new commands install hardware watchpoints if supported
by the architecture and if there are enough registers to cover the
desired memory area.

No objection by: audit@, hackers@

MFC after: 2 weeks
2001-07-11 03:15:25 +00:00
Julian Elischer
0b1ae8097d A set of changes to reduce the number of include files the kernel
takes from /usr/include. I cannot check them on alpha.. (will try beast)

Briefly looked at by: Warner Losh <imp@harmony.village.org>
2001-07-08 04:56:07 +00:00
Peter Wemm
f41325db5f With this commit, I hereby pronounce gensetdefs past its use-by date.
Replace the a.out emulation of 'struct linker_set' with something
a little more flexible.  <sys/linker_set.h> now provides macros for
accessing elements and completely hides the implementation.

The linker_set.h macros have been on the back burner in various
forms since 1998 and has ideas and code from Mike Smith (SET_FOREACH()),
John Polstra (ELF clue) and myself (cleaned up API and the conversion
of the rest of the kernel to use it).

The macros declare a strongly typed set.  They return elements with the
type that you declare the set with, rather than a generic void *.

For ELF, we use the magic ld symbols (__start_<setname> and
__stop_<setname>).  Thanks to Richard Henderson <rth@redhat.com> for the
trick about how to force ld to provide them for kld's.

For a.out, we use the old linker_set struct.

NOTE: the item lists are no longer null terminated.  This is why
the code impact is high in certain areas.

The runtime linker has a new method to find the linker set
boundaries depending on which backend format is in use.

linker sets are still module/kld unfriendly and should never be used
for anything that may be modular one day.

Reviewed by:	eivind
2001-06-13 10:58:39 +00:00
Robert Watson
b1fc0ec1a7 o Merge contents of struct pcred into struct ucred. Specifically, add the
real uid, saved uid, real gid, and saved gid to ucred, as well as the
  pcred->pc_uidinfo, which was associated with the real uid, only rename
  it to cr_ruidinfo so as not to conflict with cr_uidinfo, which
  corresponds to the effective uid.
o Remove p_cred from struct proc; add p_ucred to struct proc, replacing
  original macro that pointed.
  p->p_ucred to p->p_cred->pc_ucred.
o Universally update code so that it makes use of ucred instead of pcred,
  p->p_ucred instead of p->p_pcred, cr_ruidinfo instead of p_uidinfo,
  cr_{r,sv}{u,g}id instead of p_*, etc.
o Remove pcred0 and its initialization from init_main.c; initialize
  cr_ruidinfo there.
o Restruction many credential modification chunks to always crdup while
  we figure out locking and optimizations; generally speaking, this
  means moving to a structure like this:
        newcred = crdup(oldcred);
        ...
        p->p_ucred = newcred;
        crfree(oldcred);
  It's not race-free, but better than nothing.  There are also races
  in sys_process.c, all inter-process authorization, fork, exec, and
  exit.
o Remove sigio->sio_ruid since sigio->sio_ucred now contains the ruid;
  remove comments indicating that the old arrangement was a problem.
o Restructure exec1() a little to use newcred/oldcred arrangement, and
  use improved uid management primitives.
o Clean up exit1() so as to do less work in credential cleanup due to
  pcred removal.
o Clean up fork1() so as to do less work in credential cleanup and
  allocation.
o Clean up ktrcanset() to take into account changes, and move to using
  suser_xxx() instead of performing a direct uid==0 comparision.
o Improve commenting in various kern_prot.c credential modification
  calls to better document current behavior.  In a couple of places,
  current behavior is a little questionable and we need to check
  POSIX.1 to make sure it's "right".  More commenting work still
  remains to be done.
o Update credential management calls, such as crfree(), to take into
  account new ruidinfo reference.
o Modify or add the following uid and gid helper routines:
      change_euid()
      change_egid()
      change_ruid()
      change_rgid()
      change_svuid()
      change_svgid()
  In each case, the call now acts on a credential not a process, and as
  such no longer requires more complicated process locking/etc.  They
  now assume the caller will do any necessary allocation of an
  exclusive credential reference.  Each is commented to document its
  reference requirements.
o CANSIGIO() is simplified to require only credentials, not processes
  and pcreds.
o Remove lots of (p_pcred==NULL) checks.
o Add an XXX to authorization code in nfs_lock.c, since it's
  questionable, and needs to be considered carefully.
o Simplify posix4 authorization code to require only credentials, not
  processes and pcreds.  Note that this authorization, as well as
  CANSIGIO(), needs to be updated to use the p_cansignal() and
  p_cansched() centralized authorization routines, as they currently
  do not take into account some desirable restrictions that are handled
  by the centralized routines, as well as being inconsistent with other
  similar authorization instances.
o Update libkvm to take these changes into account.

Obtained from:	TrustedBSD Project
Reviewed by:	green, bde, jhb, freebsd-arch, freebsd-audit
2001-05-25 16:59:11 +00:00
Mark Murray
fb919e4d5a Undo part of the tangle of having sys/lock.h and sys/mutex.h included in
other "system" header files.

Also help the deprecation of lockmgr.h by making it a sub-include of
sys/lock.h and removing sys/lockmgr.h form kernel .c files.

Sort sys/*.h includes where possible in affected files.

OK'ed by:	bde (with reservations)
2001-05-01 08:13:21 +00:00
John Baldwin
f34fa851e0 Catch up to header include changes:
- <sys/mutex.h> now requires <sys/systm.h>
- <sys/mutex.h> and <sys/sx.h> now require <sys/lock.h>
2001-03-28 09:17:56 +00:00
Poul-Henning Kamp
6214433089 Use macro API for <sys/queue.h> 2000-12-30 22:06:19 +00:00
Poul-Henning Kamp
77978ab8bc Previous commit changing SYSCTL_HANDLER_ARGS violated KNF.
Pointed out by:	bde
2000-07-04 11:25:35 +00:00
Poul-Henning Kamp
82d9ae4e32 Style police catches up with rev 1.26 of src/sys/sys/sysctl.h:
Sanitize SYSCTL_HANDLER_ARGS so that simplistic tools can grog our
sources:

        -sysctl_vm_zone SYSCTL_HANDLER_ARGS
        +sysctl_vm_zone (SYSCTL_HANDLER_ARGS)
2000-07-03 09:35:31 +00:00
Archie Cobbs
05f8ee7fa9 Add a new sysctl "debug.enter_debugger" (when the kernel is compiled
with 'options DDB').  Setting this to `ddb' or `gdb' breaks into the
kernel debugger in the corresponding mode.  This mechanism has proven
very useful at Whistle for setting breakpoints, etc., while doing
remote serial line kernel debugging.

Obtained from:	Whistle source tree
2000-01-27 22:27:34 +00:00
Kazutaka YOKOTA
35e61cbd71 Add a new mechanism, cndbctl(), to tell the console driver that
ddb is entered.  Don't refer to `in_Debugger' to see if we
are in the debugger.  (The variable used to be static in Debugger()
and wasn't updated if ddb is entered via traps and panic anyway.)

- Don't refer to `in_Debugger'.
- Add `db_active' to i386/i386/db_interface.d (as in
  alpha/alpha/db_interface.c).
- Remove cnpollc() stub from ddb/db_input.c.
- Add the dbctl function to syscons, pcvt, and sio. (The function for
  pcvt and sio is noop at the moment.)

Jointly developed by: bde and me

(The final version was tweaked by me and not reviewed by bde.  Thus,
if there is any error in this commit, that is entirely of mine, not
his.)

Some changes were obtained from: NetBSD
2000-01-11 14:54:01 +00:00
Peter Wemm
5dfaebe1c3 Unused file. This (NetBSD derived) file was obsoleted by kld. 2000-01-11 13:29:10 +00:00
Peter Wemm
63aad530bc Fix a typo in the db_kld.c file - it's kld support not raw a.out support.
Always use db_kld.c for symbol table support as the base kernel maintains
this information.
2000-01-11 13:25:12 +00:00
Archie Cobbs
9ac362ddff Remove unused macro definition. 1999-11-02 22:40:15 +00:00
Poul-Henning Kamp
923502ff91 useracc() the prequel:
Merge the contents (less some trivial bordering the silly comments)
of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>.  This puts
the #defines for the vm_inherit_t and vm_prot_t types next to their
typedefs.

This paves the road for the commit to follow shortly: change
useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE}
as argument.
1999-10-29 18:09:36 +00:00
Peter Wemm
07bee188eb Delete unneeded #include
Submitted by:	 phk
1999-10-11 14:42:33 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
ce9edcf5b5 Merge the cons.c and cons.h to the best of my ability. alpha may or
may not compile, I can't test it.
1999-08-09 10:35:05 +00:00
Kazutaka YOKOTA
de22efc974 The following patch will remove a hack introduced in
/sys/ddb/db_input.c rev 1.19 to recognize syscons's cursor keycodes.
It is unnecessary now that scgetc() in syscons returns the escape
sequence for the cursor keys rather than their raw, internal key
codes.
1999-07-14 10:53:41 +00:00
Peter Wemm
1c6989fa7e Quiet warnings on Alpha. (db_expr_t is a long on alpha, int on x86) 1999-07-01 19:42:56 +00:00
Bruce Evans
c3ba51a722 Removed an especially bogus cast. 1999-05-13 13:01:46 +00:00
Bruce Evans
07f6cad7a0 Restored used include of <sys/systm.h>. -Wmissing-prototypes doesn't work
for builtin functions.
1999-05-13 06:07:44 +00:00
Poul-Henning Kamp
3000820ae0 add some amount of sanity to the way the gdb stuff finds its device.
I'm not too happy about the result either, but at least it has less
chance of backfiring.

This particular feature could be called "a mess" without offending
anybody.
1999-05-09 10:51:13 +00:00
Kirk McKusick
5c92a5b353 Get rid of extern declarations on gdb stuff so systems compiled without
DDB will compile. Warn users that try to use GDB without specifying a GDB
port in their configuration file.
1999-05-07 23:08:23 +00:00
Bruce Evans
1e66367c66 Fixed -Wcast-qual warnings. 1999-02-12 12:44:19 +00:00
Bruce Evans
ad6d29b0ac Fixed fatal type mismatches in the aout case. Const poisoning in
db_sym.h had not reached here.
1999-02-12 12:15:07 +00:00
Matthew Dillon
fe08c21a53 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile.

    This commit includes significant work to proper handle const arguments
    for the DDB symbol routines.
1999-01-27 23:45:44 +00:00
Matthew Dillon
a1c1e16ada Changes to support -Wall, -Wcast-qual. Had to make physical code changes
in db_lookup() to avoid the *cp = 0 / *cp = ':' combo ( temporary
    nul-terminate-then-restore-original ) on a const char * string.
1999-01-27 19:00:49 +00:00
John Polstra
0ec81012da Replace includes of <sys/kernel.h> with includes of
<sys/linker_set.h> in those files that use only the linker set
definitions.
1999-01-14 06:22:10 +00:00
Archie Cobbs
2127f26023 Examine all occurrences of sprintf(), strcat(), and str[n]cpy()
for possible buffer overflow problems. Replaced most sprintf()'s
with snprintf(); for others cases, added terminating NUL bytes where
appropriate, replaced constants like "16" with sizeof(), etc.

These changes include several bug fixes, but most changes are for
maintainability's sake. Any instance where it wasn't "immediately
obvious" that a buffer overflow could not occur was made safer.

Reviewed by:	Bruce Evans <bde@zeta.org.au>
Reviewed by:	Matthew Dillon <dillon@apollo.backplane.com>
Reviewed by:	Mike Spengler <mks@networkcs.com>
1998-12-04 22:54:57 +00:00
Peter Wemm
456aa5a8cf Forgot to commit this; the alpha uses the kld symbol interface now. The
tables that db_elf.c is expecting are not loaded in that format any more.
1998-10-15 02:01:50 +00:00
Peter Wemm
c6b72a39e9 Call some helper routines to be supplied by kern_linker.c in order to
get to all the symbol tables for all modules, not just the core kernel
symbol table.  Yes, DDB can see KLD module symbols with this, both by
lookup and in tracebacks.  No more references to _end from tracebacks
within an LKM. :-)
1998-10-09 23:34:09 +00:00
Peter Wemm
286896fe56 At the moment, the alpha tentatively uses the ddb elf code rather than KLD,
because the alpha boot loader hasn't been converted yet, and because
it needs the full symbol tables with local symbols in order to make sense
of stack tracebacks.  KLD will implement this (using full sybmol table
rather than the globals only) shortly.
1998-10-09 23:32:03 +00:00
Peter Wemm
ea4170d0f6 We don't compile this on an elf kernel (and explicitly not on alpha in
case it's possible to compile in something like ECOFF)
The three db_xxx.c symbol interfaces are "standard" because config isn't
flexible enough without forcing the user to know about it.
1998-10-09 23:29:44 +00:00
Doug Rabson
bcf270989f Update to work with the new elf headers. 1998-08-17 08:06:31 +00:00
Bruce Evans
748993b899 Added macros __printflike() and __scanflike() to <sys/cdefs.h>.
Use them to `make gcc -Wformat' check formats for all printf-like
and scanf-like functions in /usr/src except for the err()/warn()
family.  err() isn't quite printf-like since its format arg can
legitimately be NULL.  syslog() isn't quite printf-like, but gcc
already accepts %m, even for plain printf() when it shouldn't.
1998-07-13 06:45:23 +00:00
Bruce Evans
596dfc04ed Use not-so-new printf formats %r and/or %z instead of %n and/or %+x. 1998-07-08 10:53:58 +00:00
Bruce Evans
3da6ef3c3a Fixed bogus type of valuep in struct db_variable. It was `int *' and
became `long *' for alpha, but should always have been `db_expr_t *'.
Fixed variable types to match.
1998-07-08 09:11:43 +00:00
Bruce Evans
90163a9b33 Fixed db_printf format errors. 1998-07-08 06:43:57 +00:00
Bruce Evans
b1bf7bc679 Fixed db_printf format errors (except for ones using broken extensions
(nonstandard %n and '+' with %x), and ones not found by -Wformat on
386's (some db_expr_t's are still printed as ints).

I decided not to change the arg type for %n from [unsigned] int to
register_t, since about half of the uses of %n are to print plain
ints and casting to [unsigned] long for %n is no harder than for %x.
1998-07-08 06:27:22 +00:00
Doug Rabson
46e5fdffb9 Remove the two single step breakpoints in the reverse order of setting to
ensure that single stepping a branch to the next instruction works.
1998-07-05 10:12:18 +00:00
Doug Rabson
398a2b53c4 Add symtab parameter to X_db_symbol_values. 1998-07-05 10:11:20 +00:00
Doug Rabson
1bfc653bbc Support 'g' format for printing 8 byte values. 1998-07-05 10:10:33 +00:00
Doug Rabson
c2e7b2e40f Forgot to mention:
Obtained from: NetBSD
1998-06-28 00:59:26 +00:00
Doug Rabson
0282b90962 Add DDB symbol support for ELF and KLD. The KLD support only supports global
symbols so its not too useful.  Changes to the kernel linker to allow it to
supply DDB with symbols will come later.
1998-06-28 00:57:28 +00:00
Doug Rabson
6edf3d9144 Supply the symbol table as an argument to X_db_symbol_values (required for elf). 1998-06-28 00:55:02 +00:00
Doug Rabson
7045d394b1 Use db_addr_t for the breakpoint address in db_set_single_step. 1998-06-28 00:52:50 +00:00
Doug Rabson
431e760b94 Make db_tok_number a long to allow typing 64bit numbers on alpha. 1998-06-27 15:40:56 +00:00
Doug Rabson
c111a701df Use %+11ln for printing in r format to make it work for 64bit registers. 1998-06-27 15:39:51 +00:00
Doug Rabson
897cd717a5 Add initial support for the FreeBSD/alpha kernel. This is very much a
work in progress and has never booted a real machine.  Initial
development and testing was done using SimOS (see
http://simos.stanford.edu for details).  On the SimOS simulator, this
port successfully reaches single-user mode and has been tested with
loads as high as one copy of /bin/ls :-).

Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
Doug Rabson
aebed8b0ba Make DDB work again after I broke it :-(. 1998-06-08 08:43:20 +00:00
Bruce Evans
d85b9b2c4a Backed out previous commit, which just consisted of a 1-byte editing
error.
1998-06-08 02:15:37 +00:00
Bruce Evans
8fe48b7aed Fixed missing ifdefs and disordering in previous commit. 1998-06-08 02:12:19 +00:00
Bruce Evans
4204c166b4 Fixed ifdef bogotification in previous commit. 1998-06-08 02:11:19 +00:00
Doug Rabson
ecbb00a262 This commit fixes various 64bit portability problems required for
FreeBSD/alpha.  The most significant item is to change the command
argument to ioctl functions from int to u_long.  This change brings us
inline with various other BSD versions.  Driver writers may like to
use (__FreeBSD_version == 300003) to detect this change.

The prototype FreeBSD/alpha machdep will follow in a couple of days
time.
1998-06-07 17:13:14 +00:00
Poul-Henning Kamp
e796e00de3 Some cleanups related to timecounters and weird ifdefs in <sys/time.h>.
Clean up (or if antipodic: down) some of the msgbuf stuff.

Use an inline function rather than a macro for timecounter delta.

Maintain process "on-cpu" time as 64 bits of microseconds to avoid
needless second rollover overhead.

Avoid calling microuptime the second time in mi_switch() if we do
not pass through _idle in cpu_switch()

This should reduce our context-switch overhead a bit, in particular
on pre-P5 and SMP systems.

WARNING:  Programs which muck about with struct proc in userland
will have to be fixed.

Reviewed, but found imperfect by:       bde
1998-05-28 09:30:28 +00:00
Poul-Henning Kamp
aec5a849f9 Redo the previous commit in a more Bruce-friendly fashion.
Urged by:	bde
1998-05-19 18:42:09 +00:00
Poul-Henning Kamp
7ee17eea02 Add "show msgbuf" command 1998-05-19 11:02:24 +00:00
Bruce Evans
b7aa38c1e3 Ensure that the linker sets for commands exist by putting a standard
command in each of them.  This removes the need for hard-to-configure
dummy instantiations of the sets.
1998-02-13 02:19:29 +00:00
Eivind Eklund
303b270b0a Staticize. 1998-02-09 06:11:36 +00:00
John Dyson
d4060a8751 Some fixes from John Hood:
1) Fix the initialization of malloc structure that changed
		due to perf opt.
	2) Remove unneeded include.
	3) An initialization assert added to malloc.
Submitted by:	John Hood <cgull@smoke.marlboro.vt.us>
1997-12-05 05:36:58 +00:00
Bruce Evans
41630a0133 Cleaned up revs.1.19-1.21: 1997-11-20 16:53:23 +00:00