CVS log for src/sys/arch/m68k/m68k/db_trace.c

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Default branch: MAIN

TAB/space cleanup.

Remove trailing spaces and TABs.

curlwp is only available for ifdef _KERNEL.

use the pcb of the thread we are tracing rather than always curlwp.

update from HEAD

Sync with HEAD (as of 26th Dec)

Add some {} when the meaning is too ambiguous. From Brainy.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

add ifdefs for kernel only variable

sync with head

merge to -current.

Enable build of crash(8) for m86k platforms.

Sync with HEAD.

sync with head.

sync with head

Remove pfind() and pgfind(), fix locking in various broken uses of these.
Rename real routines to proc_find() and pgrp_find(), remove PFIND_* flags
and have consistent behaviour.  Provide proc_find_raw() for special cases.
Fix memory leak in sysctl_proc_corename().

COMPAT_LINUX: rework ptrace() locking, minimise differences between
different versions per-arch.

Note: while this change adds some formal cosmetics for COMPAT_DARWIN and
COMPAT_IRIX - locking there is utterly broken (for ages).

Fixes PR/43176.

sync with head

Use lwp_getpcb() on m68k ports, clean from struct user usage.

Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code.  Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.

sync with head.

Sync with HEAD.

Sync with wrstuden-revivesa-base-2.

Sync with head.

Remove proc_representative_lwp(), use a simple LIST_FIRST() instead.
OK by <ad>.

sync with HEAD

Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree.  Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches.  The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

sync with head.

Sync w/ NetBSD-4-RC_1

Sync with head.

Sync with head.

Sync with HEAD.

Pull up following revision(s) (requested by mhitch in ticket #728):
	sys/arch/mvme68k/mvme68k/locore.s: revision 1.98
	sys/arch/mac68k/mac68k/trap.c: revision 1.128
	sys/arch/next68k/next68k/locore.s: revision 1.48
	sys/arch/mac68k/mac68k/locore.s: revision 1.152
	sys/arch/sun3/sun3/locore.s: revision 1.88
	sys/arch/sun2/sun2/locore.s: revision 1.19
	sys/arch/sun2/sun2/trap.c: revision 1.32
	sys/arch/m68k/m68k/db_trace.c: revision 1.51
	sys/arch/mvme68k/mvme68k/trap.c: revision 1.90
	sys/arch/news68k/news68k/trap.c: revision 1.53
	sys/arch/luna68k/luna68k/locore.s: revision 1.27
	sys/arch/atari/atari/locore.s: revision 1.99
	sys/arch/sun3/sun3/trap.c: revision 1.130
	sys/arch/x68k/x68k/trap.c: revision 1.89
	sys/arch/next68k/next68k/trap.c: revision 1.67
	sys/arch/x68k/x68k/locore.s: revision 1.79
	sys/arch/news68k/news68k/locore.s: revision 1.43
	sys/arch/luna68k/luna68k/trap.c: revision 1.46
	sys/arch/hp300/hp300/locore.s: revision 1.140
	sys/arch/cesfic/cesfic/locore.s: revision 1.15
	sys/arch/cesfic/cesfic/trap.c: revision 1.35
	sys/arch/m68k/m68k/trap_subr.s: revision 1.12
	sys/arch/amiga/amiga/locore.s: revision 1.143
Pass a frame pointer to trap() rather than the 'entire frame' trick.  Gcc4
was optimizing away modifications to the frame contents (it's not nice to
trick gcc).  Pass the pointer as the first argument to reduce the number
of places that would be changed otherwise.  Fixes the getcwd regression
test on most m68k ports.

Pass a frame pointer to trap() rather than the 'entire frame' trick.  Gcc4
was optimizing away modifications to the frame contents (it's not nice to
trick gcc).  Pass the pointer as the first argument to reduce the number
of places that would be changed otherwise.  Fixes the getcwd regression
test on most m68k ports.

- sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.

sync with head.

TRUE -> true, FALSE -> false

Fix lossage on bool changes.

Pick up some additional files that were missed before due to conflicts
with newlock2 merge:

Replace the Mach-derived boolean_t type with the C99 bool type.  A
future commit will replace use of TRUE and FALSE with true and false.

- Add /a modifier to trace that allows a specific LWP to be selected.
- When doing trace/t, always note which pid/lid combination is being traced.

Change the process/lwp flags seen by userland via sysctl back to the
P_*/L_* naming convention, and rename the in-kernel flags to avoid
conflict. (P_ -> PK_, L_ -> LW_ ). Add back the (now unused) LSDEAD
constant.

Restores source compatibility with pre-newlock2 tools like ps or top.

Reviewed by Andrew Doran.

sync with head.

sync with head.

sync with head

Use p_find(addr, PFIND_LOCKED) in case the proclist_lock is held.

sync with head

TAB/space cleanup.

KNF and misc cosmetics

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Adapt to recent constification of db_interface.h and db_sym.h.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Use ANSI function decls and static.

Sync with HEAD

__KERNEL_RCSID()

Merge the nathanw_sa branch.

Catch up to -current

g/c local offsetof(), it's defined in libkern.h

No longer need to pull in lwp.h; proc.h pulls it in for us.

catch up with -current on kqueue branch

Catch up to -current.

#include <db/db_extern.h>

Nuke local extern label_t *db_recover;  it's now in <ddb/db_extern.h>

Kernel support for Scheduler Activations on m68k-based ports using
mvme68k as a testbed.

Boots multi-user on an mvme162, although userland support for SA is not
yet integrated/tested.

Sync with HEAD.

missed an underscore in previous.

fix previous to work with a.out as well.

remove signal trampoline stuff since it'll never be used in the kernel.
clean up the ELF support.

make db_[e]regs[] const

const'ify the 1st parameter of db_var_short() to account for the
recent "struct db_variable" change.

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

Add a `/t' modifier to the m68k ddb's `trace' command. This enables
one to perform a kernel traceback of any (non-swapped-out) process in
the system. For example, to show the traceback for PID 178:

  db> t/t 0t178
  trace: pid 178 at 0xabcd68
  _mi_switch(0x109f60) + 164
  ...
  db>

Sync w/ netbsd-1-5-base.

Oops, omitted the rename from last.
Function in this file is db_stack_trace_print(),
not db_stack_trace_cmd().

Rename the machine-specific stack trace printing functions
from db_stack_trace_cmd() to db_stack_trace_print(),
and add an additional argument, a function pointer for an
output routine (i.e. printf() or db_printf()).

Add db_stack_trace_cmd() in db_command.[ch], calling
db_stack_trace_print() with db_printf() as the printer.

Move count==-1 special handling from db_stack_trace_print() [nee
db_stack_trace_cmd()] to db_stack_trace_cmd() [nascent here].

Again, I'm unable to test compilation on all affected platforms,
so advance apologies for potential brokenness.

vm_offset_t -> db_addr_t (mostly), v_addr_t (one place).

Add a check to my last 'fix' which ensures the fault really
did happen in kernel mode.

file db_trace.c was added on branch netbsd-1-4 on 1999-04-05 17:17:05 +0000

Add a check to my last 'fix' which ensures the fault really
did happen in kernel mode.

Fix a problem I noticed a while back but had too many other things
in the air to deal with it.
Basically, following a kernel fault (eg. dereferencing a NULL pointer
in kernel mode) a DDB 'trace' did not show the function where the
fault occurred. For example:

	db> trace
	_Debugger()
	_panic()
	_trap()
	faultstkadj()
	_pool_drain()
	_uvm_pageout()
	_start_pagedaemon()
	_proc_trampoline()
	db>

The 'faultstkadj()' line here is bogus. It is shown because the return
address to 'trap()' happens to point there, and since faultstkadj() has
no stack frame, DDB assumes it was the faulting function. In this example,
the _real_ function was pool_reclaim(), but you would have to look at
the program counter at the time of the fault to figure that one out.

This fix makes the trace command do the dirty work for you by grubbing
around in 'trap()'s argument list to find the *real* PC value at the
time of the fault, replacing the 'faultstkadj()' line with the real
function's name.

Eliminate use of CPP symbol "mc68020".

Fixed stack trace address printing lossage when no symbols are available.

Make type explicit for egcs, from Erik Bertelsen in PR 5287.
Dump the register qualifier while we're here, as suggested in the PR.

db_expr_t is now a long.

Adapt to changed definition of struct db_variable.

Update for new struct member names in db_regs_t.

Use db_regs_t instead of struct mc68020_saved_state

Prototype + -Wall fixes.

Remove the hack that faked up an "ssp" value.  It is now up to
locore.s to put the right sp in the frame.  Also move memory
access code into db_memrw.c so it can be taken separately.

Oops, label_t does not have implicit pointer type like jmp_buf

eliminate setjmp.h

Fix range check for kernel stack pointers.

Fix disassembly of 8-bit branch displacements (sign extend).
Fix invalid array references disassembling float instructions.
Make the system stack pointer visible in show regs.
Make "sr" a proper short, remove some junk...

new RCS ID format.

Fix parentheses bug in code that counts function args.

Default to displaying 5 args if size is unknown.  Allow for multiple addq's
following the jsr.  Don't try to trace into the user's stack.  Other minor
cleanup.

Deal with linkl in addition to linkw.

Fix a buglet.

Fix jmp_buf definitions.

KNFify, and fix a condition where we might miss the register saves if the
frame length is short.

kill logs, and clean up.  some of this will need cpu-dependent hooks.

fixed problem that caused two consecutive segments to be using the same
pmeg unknowingly.  still too many printfs, not sure how many are actualy
in the machine dependent code.  reaches cpu_startup() where it stops
deliberately. next project: autoconfig(), maybe kgdb

lots of changes, too many printfs