CVS log for src/sys/arch/vax/vax/sig_machdep.c

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Default branch: MAIN

Pull up following revision(s) (requested by thorpej in ticket #694):

	sys/arch/vax/vax/sig_machdep.c: revision 1.27
	sys/arch/vax/include/mcontext.h: revision 1.11
	sys/arch/vax/vax/machdep.c: revision 1.200

Implement _UC_SETSTACK / _UC_CLRSTACK.

Implement _UC_SETSTACK / _UC_CLRSTACK.

Use "stack_t" instead of "struct sigaltstack", as the former is the
newer standardized name.  NFC.

Use the signal trampoline version constants from <sys/signal.h>.

Sync with HEAD

Pull up following revision(s) (requested by maxv in ticket #1677):

	sys/arch/hppa/hppa/sig_machdep.c: revision 1.26
	sys/arch/arm/arm/sig_machdep.c: revision 1.51
	sys/arch/i386/i386/machdep.c: revision 1.813
	sys/arch/alpha/alpha/machdep.c: revision 1.352
	sys/arch/m68k/m68k/sig_machdep.c: revision 1.50
	sys/arch/usermode/target/i386/cpu_i386.c: revision 1.8
	sys/arch/sparc64/sparc64/machdep.c: revision 1.289
	sys/arch/sparc64/sparc64/netbsd32_machdep.c: revision 1.111
	sys/arch/powerpc/powerpc/sig_machdep.c: revision 1.46
	sys/arch/amd64/amd64/netbsd32_machdep.c: revision 1.117
	sys/arch/sh3/sh3/sh3_machdep.c: revision 1.106
	sys/arch/mips/mips/netbsd32_machdep.c: revision 1.16
	sys/arch/mips/mips/sig_machdep.c: revision 1.24
	sys/arch/usermode/target/x86_64/cpu_x86_64.c: revision 1.7
	sys/arch/vax/vax/sig_machdep.c: revision 1.23

Fix widespread leak in the sendsig_siginfo() functions. sigframe_siginfo
has padding, so zero it out properly. While here I'm also zeroing out some
other things in several ports, for safety. Same problem in netbsd32, so
fix that too.

I can't compile-test on each architecture, but there should be no
breakage (tm).

Overall this fixes at least 14 info leaks. Prompted by the discovery by
KLEAK of a leak in amd64's sendsig_siginfo.

Pull up following revision(s) (requested by maxv in ticket #1677):

	sys/arch/hppa/hppa/sig_machdep.c: revision 1.26
	sys/arch/arm/arm/sig_machdep.c: revision 1.51
	sys/arch/i386/i386/machdep.c: revision 1.813
	sys/arch/alpha/alpha/machdep.c: revision 1.352
	sys/arch/m68k/m68k/sig_machdep.c: revision 1.50
	sys/arch/usermode/target/i386/cpu_i386.c: revision 1.8
	sys/arch/sparc64/sparc64/machdep.c: revision 1.289
	sys/arch/sparc64/sparc64/netbsd32_machdep.c: revision 1.111
	sys/arch/powerpc/powerpc/sig_machdep.c: revision 1.46
	sys/arch/amd64/amd64/netbsd32_machdep.c: revision 1.117
	sys/arch/sh3/sh3/sh3_machdep.c: revision 1.106
	sys/arch/mips/mips/netbsd32_machdep.c: revision 1.16
	sys/arch/mips/mips/sig_machdep.c: revision 1.24
	sys/arch/usermode/target/x86_64/cpu_x86_64.c: revision 1.7
	sys/arch/vax/vax/sig_machdep.c: revision 1.23

Fix widespread leak in the sendsig_siginfo() functions. sigframe_siginfo
has padding, so zero it out properly. While here I'm also zeroing out some
other things in several ports, for safety. Same problem in netbsd32, so
fix that too.

I can't compile-test on each architecture, but there should be no
breakage (tm).

Overall this fixes at least 14 info leaks. Prompted by the discovery by
KLEAK of a leak in amd64's sendsig_siginfo.

Pull up following revision(s) (requested by maxv in ticket #1677):

	sys/arch/hppa/hppa/sig_machdep.c: revision 1.26
	sys/arch/arm/arm/sig_machdep.c: revision 1.51
	sys/arch/i386/i386/machdep.c: revision 1.813
	sys/arch/alpha/alpha/machdep.c: revision 1.352
	sys/arch/m68k/m68k/sig_machdep.c: revision 1.50
	sys/arch/usermode/target/i386/cpu_i386.c: revision 1.8
	sys/arch/sparc64/sparc64/machdep.c: revision 1.289
	sys/arch/sparc64/sparc64/netbsd32_machdep.c: revision 1.111
	sys/arch/powerpc/powerpc/sig_machdep.c: revision 1.46
	sys/arch/amd64/amd64/netbsd32_machdep.c: revision 1.117
	sys/arch/sh3/sh3/sh3_machdep.c: revision 1.106
	sys/arch/mips/mips/netbsd32_machdep.c: revision 1.16
	sys/arch/mips/mips/sig_machdep.c: revision 1.24
	sys/arch/usermode/target/x86_64/cpu_x86_64.c: revision 1.7
	sys/arch/vax/vax/sig_machdep.c: revision 1.23

Fix widespread leak in the sendsig_siginfo() functions. sigframe_siginfo
has padding, so zero it out properly. While here I'm also zeroing out some
other things in several ports, for safety. Same problem in netbsd32, so
fix that too.

I can't compile-test on each architecture, but there should be no
breakage (tm).

Overall this fixes at least 14 info leaks. Prompted by the discovery by
KLEAK of a leak in amd64's sendsig_siginfo.

Pull up following revision(s) (requested by maxv in ticket #1173):
	sys/arch/hppa/hppa/sig_machdep.c: revision 1.26
	sys/arch/arm/arm/sig_machdep.c: revision 1.51
	sys/arch/i386/i386/machdep.c: revision 1.813
	sys/arch/alpha/alpha/machdep.c: revision 1.352
	sys/arch/m68k/m68k/sig_machdep.c: revision 1.50
	sys/arch/usermode/target/i386/cpu_i386.c: revision 1.8
	sys/arch/sparc64/sparc64/machdep.c: revision 1.289
	sys/arch/sparc64/sparc64/netbsd32_machdep.c: revision 1.111
	sys/arch/powerpc/powerpc/sig_machdep.c: revision 1.46
	sys/arch/amd64/amd64/netbsd32_machdep.c: revision 1.117
	sys/arch/sh3/sh3/sh3_machdep.c: revision 1.106
	sys/arch/mips/mips/netbsd32_machdep.c: revision 1.16
	sys/arch/mips/mips/sig_machdep.c: revision 1.24
	sys/arch/riscv/riscv/sig_machdep.c: revision 1.2
	sys/arch/usermode/target/x86_64/cpu_x86_64.c: revision 1.7
	sys/arch/vax/vax/sig_machdep.c: revision 1.23

Fix widespread leak in the sendsig_siginfo() functions. sigframe_siginfo
has padding, so zero it out properly. While here I'm also zeroing out some
other things in several ports, for safety. Same problem in netbsd32, so
fix that too.

I can't compile-test on each architecture, but there should be no
breakage (tm).

Overall this fixes at least 14 info leaks. Prompted by the discovery by
KLEAK of a leak in amd64's sendsig_siginfo.

Synch with HEAD

Retire compat_ibcs2, as discussed on tech-kern@. FreeBSD did the same
recently.

Sync with HEAD, resolve a few conflicts

Fix widespread leak in the sendsig_siginfo() functions. sigframe_siginfo
has padding, so zero it out properly. While here I'm also zeroing out some
other things in several ports, for safety. Same problem in netbsd32, so
fix that too.

I can't compile-test on each architecture, but there should be no
breakage (tm).

Overall this fixes at least 14 info leaks. Prompted by the discovery by
KLEAK of a leak in amd64's sendsig_siginfo.

update from HEAD

Sync with HEAD

Update copyright notice for Ludd (remove clause 3 & 4).

Include compat stuff for IBCS2 as well.

Cleanup trapframe handling.  Instead of keeping a trapframe pointer in the
pcb, put in the mdlwp instead.  We had a dummy field so it didn't grow in
size.  This also follows the practice that mips and powerpc follow that a
pointer to the user trapframe is in l->l_md.md_utf.  Make trapframe members
start with tf_

sync with head

Cleanups includes.  Change <machine/XXX.h> to <sys/XXX.h>
Remove unneeded includes.

sync with head

- Use lwp_getpcb() on VAX, clean from struct user usage.
- Include sys/user.h in MD proc.h .

sync with head.

Sync with HEAD.

Sync with HEAD.

- Separate the COMPAT_13 and COMPAT_16 code into their own files and
  compile them only when the relevant config options are set.

- Provide a sendsig_sigcontext() implementation using the existing vax
  signal code; it already does the correct thing.

add stub for sendsig_sigcontext().
I leave this to our vax guys to implement it.
Implementing it is another step to make vax kernels build again.

catch up with latest changes: sendsig -> sendsig_siginfo

Sync with HEAD.

sync with head.

Per discussion with ad at n dot o, revert signal mask handling
changes.

The l_sigstk changes are most likely totally un-needed as SA will
never use a signal stack - we send an upcall (or will as other
diffs are brought in).

The l_sigmask changes were too controvertial. In all honesty, I
think it's probably best to revert them. The main reason they were
there is the fact that in an SA process, we don't mask signals per
kernel thread, we mask them per user thread. In the kernel, we want
them all to get turned into upcalls. Thus the normal state of
l_sigmask in an SA process is for it to always be empty.

While we are in the process of delivering a signal, we want to
temporarily mask a signal (so we don't recursively exhaust our
upcall stacks). However signal delivery is rare (important, but
rare), and delivering back-to-back signals is even rarer. So rather
than cause every user of a signal mask to be prepared for this very
rare case, we will just add a second check later in the signal
delivery code. Said change is not in this diff.

This also un-compensates all of our compatability code for dealing
with SA. SA is a NetBSD-specific thing, so there's no need for
Irix, Linux, Solaris, SVR4 and so on to cope with it.

As previously, everything other than kern_sa.c compiles in i386
GENERIC as of this checkin. I will switch to ALL soon for compile
testing.

Per discussion with ad, remove most of the #include <sys/sa.h> lines
as they were including sa.h just for the type(s) needed for syscallargs.h.

Instead, create a new file, sys/satypes.h, which contains just the
types needed for syscallargs.h. Yes, there's only one now, but that
may change and it's probably more likely to change if it'd be difficult
to handle. :-)

Per discussion with matt at n dot o, add an include of satypes.h to
sigtypes.h. Upcall handlers are kinda signal handlers, and signalling
is the header file that's already included for syscallargs.h that
closest matches SA.

This shaves about 3000 lines off of the diff of the branch relative
to the base. That also represents about 18% of the total before this
checkin.

I think this reduction is very good thing.

Initial checkin of re-adding SA. Everything except kern_sa.c
compiles in GENERIC for i386. This is still a work-in-progress, but
this checkin covers most of the mechanical work (changing signalling
to be able to accomidate SA's process-wide signalling and re-adding
includes of sys/sa.h and savar.h). Subsequent changes will be much
more interesting.

Also, kern_sa.c has received partial cleanup. There's still more
to do, though.

Merge proc::p_mutex and proc::p_smutex into a single adaptive mutex, since
we no longer need to guard against access from hardware interrupt handlers.

Additionally, if cloning a process with CLONE_SIGHAND, arrange to have the
child process share the parent's lock so that signal state may be kept in
sync. Partially addresses PR kern/37437.

sync with head

sync with HEAD

Sync with HEAD

Sync with head.

Convert all the system call entry points from:
    int foo(struct lwp *l, void *v, register_t *retval)
to:
    int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.

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 with head.

Sync with head.

Sync with head.

Initialize the link context in a signal frame to the receiving lwp's
link context instead of NULL.  Otherwise, if we got a signal while the
lwp had a link context set, the link context would be set to NULL upon
return from signal delivery.

christos@tech-kern: "I think you are right."

Sync with HEAD.

Fix caddr_t fallout.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

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

sync with head.

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.

More MD changes to get vax compiling.

Merge newlock2 to head.

Remove support for SA. Ok core@.

sync with head.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Another file which needs <compat/sys/signal.h> and <compat/sys/signalvar.h>
for native_sigset_to_sigset13.

Also fix something which must obviously be a typo:
COMAT_ULTRIX -> COMPAT_ULTRIX.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

file sig_machdep.c was added on branch ktrace-lwp on 2004-08-03 10:42:37 +0000

Copy ksi->ksi_info, not all of ksi, to user stack.

Rearrange and with COMPAT_* properly

trap.c:		Set ksi.ksi_trap to frame->trap.
sig_machdep.c:	Use ksi->ksi_addr in compat code to supply the
		'code' argument to the old signal routines.

Add SA_SIGINFO support for VAX.