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

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Move alpha/alpha/db_instruction.h -> alpha/include/alpha_instruction.h

Adjust proc/lwp access for user-space (crash(8)).

Reduce db_trace.c's exposure to proc/lwp.

decode_prologue(): Make pc a db_addr_t, not a db_expr_t.
db_stack_trace_print_ra(): Missed one direct reference to XentSys; fix.

Refactor the special symbol handling out of db_trace.c into
db_interface.c, and abstract it away from having to read kernel
symbols directly.

Don't access insns or frame values directly; use db_read_bytes().

ddb: New db_stack_trace_print_ra.

Takes an optional extra argument for the return address so that the
stack parser has a chance to use instruction-dependent interpretation
of the frame to find parent frames.

Implemented only on Alpha for now, which needs it.  Other
architectures just ignore the extra argument.

PR port-alpha/57716

XXX pullup-10
XXX pullup-9
XXX pullup-8

Rename functions in previous in preparation for future changes.

Localize direct refernces to kernel symbols into functions.  NFC.

Sync with HEAD.

Fix all remaining typos, mainly in comments but also in few definitions and log messages, reported by me in PR kern/54889.
Also fixed some additional typos in comments, found on review of same files or typos.

- Add exception_return() to the list of trap vector symbols, which will
  enable us to trace back through an exception if the fault happens
  during the exception return.
- Identify and report the kernel thread backstop when back tracing
  kernel threads.

sync with head

merge to -current.

Do a minor cleanup of alpha (this will make applying pullups post branching
easier).
u_int{8,16,32,64}_t -> uint{*}_t
Change all old-style definitions to C89 prototypes.
Whitespace cleanup.
Constification in db_disasm.c

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 Alpha.
- Replace and clean struct user usage, slightly simplify some code parts.
- Include sys/user.h in MD proc.h .

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.

sync with head.

sync with head.

Remove clause 3 and 4 from TNF licenses

- 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

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.

Merge newlock2 to head.

sync with head.

Update for proc_representative_lwp() / calcru() signature change.

sync with head.

sync with head

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

merge ktrace-lwp.

Sync with HEAD. Here we go again...

adapt to const changes.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

In decode_prologue(), ignore positive-offset frame adjustments ("lda
sp, 64(sp)") on the theory that they're from the function epilogue,
which aggressive code motion has placed before the end of the
function's code.

Addresses my PR port-alpha/23996.

Simplify a little.

uninitialized variables

Fix NULL change lossage.

Merge the nathanw_sa branch.

Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).

Use proc_representative_lwp() instead of LIST_FIRST(&p->p_lwps) when
selecting a LWP for thread tracing.
XXX This doesn't affect t/t of single-LWP processes, but a better interface
XXX is needed to select a specific LWP of a multi-LWP process.

First cut at LWP and SA support on the alpha.
Doesn't break in ordinary multiuser mode; LWPs and SAs not yet tested.

Sync with HEAD (for UBC fixes).

Sync with HEAD (for UBC fixes)

Do the md_syscall, __HAVE_MINIMAL_EMUL and __HAVE_SYSCALL_INTERN thangs.

Sync with HEAD.

s/char \*/const &/ so that this file compiles again.

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.

Sync w/ netbsd-1-5-base.

ANSI'ify.

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.

Interface change: db_printsym() takes a third argument, pr, a function
pointer indicating how to print the symbol. This allows db_printsym()
to called in places where db_printf() is not an appropriate output
function.

While straightforward, apologies in advance if I've introduced any minor
syntax errors; I was unable to test compilation this on all the affected
platforms.

Update from trunk.

Fix off-by-one comparison.

* Big rototill: cleanup, reorganize, redo some things...
* New features:
	+ traceback for threads (i.e., pids):  db>trace/t 0t<pid>
	+ traceback over console restart (halt and SRM continue)
	+ print ipl in trapframes when it's known and it changed
	+ print emulation and system call entry name (!) if proc is known
	   --- syscall (240, netbsd.sys_nanosleep) ---

Sync w/ -current.

After some banging and bashing, commit Jason's new ddb traceback code.

Update marc-pcmcia branch from trunk.

file db_trace.c was added on branch marc-pcmcia on 1997-09-06 17:59:41 +0000

Add support for DDB (in-kernel debugger) to NetBSD/alpha, based on
such code for Mach 3's Alpha port.  Initially reworked for NetBSD/alpha
by Chris Demetriou, and then heavily hacked on by me.  Works, but is still
a little rough around the edges.  Known problems:

- Error recovery could be improved a bit.
- Back traces don't work.
- Single-stepping can be flaky, at times.  (Alpha doesn't have hardware
  support for single-stepping, and I'm not entirely convinced the
  MI DDB software-emulated single-stepping logic is 100% correct.)
- Logic for when to drop into DDB needs some improvement.