Commit Graph

1476 Commits

Author SHA1 Message Date
obrien
9e804492ab Move the int typedefs to the top so they can be used in defining other types.
Ensure every platform has __offsetof.
Make multiple inclusion detection consistent with other
  <platform>/include/*.h files.
2001-05-16 22:21:43 +00:00
jhb
c87fc95350 Lock the procfs functions for doing a single step and reading/writing
registers better.  Hold sched_lock not only for checking the flag but
also while performing the actual operation to ensure the process doesn't
get swapped out by another CPU while we the operation is being performed.
2001-05-16 00:47:27 +00:00
jhb
b325e18899 "Sir, the deorbit burn completed succesfully."
RIP {sys/machine}/ipl.h.
2001-05-15 23:30:37 +00:00
jhb
3fbeaa9056 Remove unneeded includes of sys/ipl.h and machine/ipl.h. 2001-05-15 23:22:29 +00:00
joerg
b9d6a2b68d Implement a few more floppy ioctl commands and IO options, namely:
. FD_CLRERR clears the error counter, thus re-enables kernel error
  printf()s,

. FD_GSTAT obtains the last FDC operation state, if any,

. FDOPT_NOERRLOG (temporarily) turns off kernel printf() floppy
  error logging,

. FDOPT_NOERROR makes the kernel ignore an FDC error, thus can
  enable the transfer of an erroneous sector to the user application

All options are being cleared on (last) close.

Prime consumer of the last features will be fdread(1), to be committed
shortly.

(FD_CLRERR should be wired into fdcontrol(8), but then fdcontrol(8)
needs a major rewrite anyway.)
2001-05-14 20:20:11 +00:00
phk
0e2026a179 Convert DEVFS from an "opt-in" to an "opt-out" option.
If for some reason DEVFS is undesired, the "NODEVFS" option is
needed now.

Pending any significant issues, DEVFS will be made mandatory in
-current on july 1st so that we can start reaping the full
benefits of having it.
2001-05-13 20:52:40 +00:00
jhb
a3d99e2097 Simply the vm fault trap handling code a bit by using if-else instead of
duplicating code in the then case and then using a goto to jump around
the else case.
2001-05-11 23:17:54 +00:00
jhb
465be778a8 Allow sendsig() to hand the proc lock off to osendsig() rather than having
sendsig() release the lock just so it can call osendsig() and have
osendsig() acquire the lock.
2001-05-11 23:17:05 +00:00
jhb
41fc4419f3 - Split out the support for per-CPU data from the SMP code. UP kernels
have per-CPU data and gdb on the i386 at least needs access to it.
- Clean up includes in kern_idle.c and subr_smp.c.

Reviewed by:	jake
2001-05-10 17:45:49 +00:00
mjacob
a9f3e2fac8 The new order of things is that dwlpxN is now called pcibN- so hack around
*that* whilst we ponder the best way to decide how to register dwlpx interrupts
with TLSB.
2001-05-10 07:08:03 +00:00
mjacob
d739b2bcb9 add alpha_pci_route_interrupt method 2001-05-10 06:52:56 +00:00
mjacob
4626a44bc4 Quick hack to reintroduce the notion that there might be alpha platforms
without an i8254 timer/counter. This really needs to be cleaned up.
2001-05-10 05:23:58 +00:00
jhb
f72ad1a4e5 Include sys/lock.h for witness_list_locks() and axe unneeded sys/mutex.h
include.
2001-05-09 22:08:28 +00:00
markm
bcca5847d5 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
jhb
559e5f8890 Turn on preemption by default on the alpha arch. This also removes the
PREEMPTION kernel option.

Not objected to by:	-alpha
2001-05-01 00:19:24 +00:00
jhb
8bfdafc934 Overhaul of the SMP code. Several portions of the SMP kernel support have
been made machine independent and various other adjustments have been made
to support Alpha SMP.

- It splits the per-process portions of hardclock() and statclock() off
  into hardclock_process() and statclock_process() respectively.  hardclock()
  and statclock() call the *_process() functions for the current process so
  that UP systems will run as before.  For SMP systems, it is simply necessary
  to ensure that all other processors execute the *_process() functions when the
  main clock functions are triggered on one CPU by an interrupt.  For the alpha
  4100, clock interrupts are delievered in a staggered broadcast fashion, so
  we simply call hardclock/statclock on the boot CPU and call the *_process()
  functions on the secondaries.  For x86, we call statclock and hardclock as
  usual and then call forward_hardclock/statclock in the MD code to send an IPI
  to cause the AP's to execute forwared_hardclock/statclock which then call the
  *_process() functions.
- forward_signal() and forward_roundrobin() have been reworked to be MI and to
  involve less hackery.  Now the cpu doing the forward sets any flags, etc. and
  sends a very simple IPI_AST to the other cpu(s).  AST IPIs now just basically
  return so that they can execute ast() and don't bother with setting the
  astpending or needresched flags themselves.  This also removes the loop in
  forward_signal() as sched_lock closes the race condition that the loop worked
  around.
- need_resched(), resched_wanted() and clear_resched() have been changed to take
  a process to act on rather than assuming curproc so that they can be used to
  implement forward_roundrobin() as described above.
- Various other SMP variables have been moved to a MI subr_smp.c and a new
  header sys/smp.h declares MI SMP variables and API's.   The IPI API's from
  machine/ipl.h have moved to machine/smp.h which is included by sys/smp.h.
- The globaldata_register() and globaldata_find() functions as well as the
  SLIST of globaldata structures has become MI and moved into subr_smp.c.
  Also, the globaldata list is only available if SMP support is compiled in.

Reviewed by:	jake, peter
Looked over by:	eivind
2001-04-27 19:28:25 +00:00
gallatin
95c1741160 Make stathz match reality on platforms like the 4100 where hz!=1024
It might be more correct to make stathz as close as possible to 128,
but that would involve adding complexity to the clock intr path, which
I don't want to do.
2001-04-27 18:21:25 +00:00
jhb
8ffc16e891 Initialize p_md.md_kernnest to 1 for newly fork'd processes since they
start off in the kernel.
2001-04-26 23:52:40 +00:00
obrien
b65aa4182e Fix SCM ID's and remove tailing blanks. 2001-04-25 20:40:57 +00:00
jhb
82f8beb7b0 - Make the dumping of console messages from the secondary CPU's to the
kernel console be #ifdef DIAGNOSTIC.
- Don't set ktr_mask in release_aps().
2001-04-25 17:24:57 +00:00
gallatin
06672ba7f1 alpha_fpstate_save is fairly expensive (critical enter/exit, possibly
saves 32 registers) to do on every context switch.  This is only required
for SMP, so only do it there.

We should also look at moving the critical enter/exit out to the callers
2001-04-25 13:57:33 +00:00
jhb
7f17e1a5d9 Add a new field 'md_kernnest' to the alpha machine dependent process
structure.  This field keeps track of how many levels deep we are nested
into the kernel.  The nesting level is bumped at the start of a trap,
interrupt, syscall, or exception and is decremented on return.  This is
used to detect the case when the kernel is returning back to a kernel
context in exception_return().  If we are returning to the kernel we need
to update the globaldata pointer register saved in the stack frame in case
we have switched CPU's between taking the initial interrupt that saved the
frame and returning.  If we don't do this fixup it is possible for a CPU to
use the wrong per-cpu data.  On UP systems this is not a problem, so the
code is conditional on SMP.

A count was used instead of simply checking the process status register in
the frame during exception_return() since there are critical sections at
the very start and end of a trap, exception, or interrupt from userland in
which we could trash the t7 register being used in userland.  The counter
is incremented after adn before these critical sections respectively so
that we will not overwrite the saved t7 register if we are interrupted
during one of these critical sections.
2001-04-24 21:06:53 +00:00
mjacob
28d910ceaa fix it so it compiles again after twerpage elsewhere 2001-04-23 18:38:01 +00:00
mjacob
4222e09635 Fix includes so it compiles again. 2001-04-23 18:08:54 +00:00
gallatin
d237fa1cf5 Block out all interrupts, even machine checks, for critical_enter()
This is will be required to prevent lowering the ipl when a critical_enter()
is present in the interrupt path when handling a machine check.

reviewed by: jhb
2001-04-21 21:44:39 +00:00
gallatin
824b443645 GC some debugging code that's been #if 0'ed since we got the file from
NetBSD
2001-04-20 00:55:21 +00:00
jhb
a222601bea Convert the protection of hte i8254 from critical_enter/exit like it is
on the x86.
2001-04-18 21:47:48 +00:00
jhb
82131f7a66 Back out the previous revision as it causes random sig 11's to userland
processes until a better fix is found.

Submitted by:	gallatin
2001-04-18 17:17:55 +00:00
jhb
2a45d7c9b1 Save are floating point state in cpu_switch() if needed instead of relying
completely on lazy floating point state saving.  This is needed for the
SMP case since processes can migrate to other CPUs.

Submitted by:	dfr
2001-04-17 18:27:55 +00:00
gallatin
36a5c45998 set gd_other_cpus later, when we have a better idea what the other cpus
are.

submitted by: jhb
2001-04-17 14:59:05 +00:00
gallatin
72d859dc84 Improved support for alpha SMP. The following commit gets dual AS2100s
and AS4100s into single user mode. This work was done jointly by jhb and
myself, and builds on dfr's earlier work.

smp_init_secondary() / smp_start_secondary()
- use the uniq val to pass the globalp (me)
- fancy footwork to take any pending machine checks (me)
- doing things the FreeBSD way and getting the per-cpu idleproc created
  correctly, and synchronizing the startup of secondaries (jhb)

mp_start()
- better recognition of available cpus (jhb)

smp_rendezvous()
- if smp hasn't started, only run the rendezvous function on the current
cpu.  Sleuthing and (prior) incorrect fix by me, correct fix by jhb

smp_handle_ipi()
- more verbose handling of console messages (jhb)
- grab sched lock around setting PS_ASTPENDING (jhb)

forward_*clock()
- commented out.  Joint decision by dfr, jhb and myself

 General synchronization improvements (more mb()s, etc) (jhb)

 Printf cleanups (joint)

 Whitespace cleanups (jhb)
2001-04-17 14:55:09 +00:00
gallatin
46b69f69df Changes to support SMP:
- don't do the stack overflow sanity check on MP systems -- p->p_addr
will be malloc'ed memory (not K0SEG) and the check will fail.

- don't ignore clock interrupts on secondaries.  Alphas apparently
roundrobin clock interrupts to all cpus, so we're going to take clock
interrupts on all CPUS and not forward them.
2001-04-17 14:20:33 +00:00
gallatin
6d75f2cafd changes to smp_init_secondary_glue():
- use the unique value to save the per-cpu globalp struct like the
  comment says

- don't lower the ipl to ALPHA_PSL_IPL_HIGH: we may have a pending machine
  check to take and we're not prepared for that yet, as we haven't setup
  our interrupt entry points. (this may only happen on sable/lynx)

- indicate the fact that the working version of smp_init_secondary() doesn't
  return (this is tied up in other changes and hasn't yet been committed).
2001-04-17 14:15:12 +00:00
jhb
82848b046f Blow away the panic mutex in favor of using a single atomic_cmpset() on a
panic_cpu shared variable.  I used a simple atomic operation here instead
of a spin lock as it seemed to be excessive overhead.  Also, this can avoid
recursive panics if, for example, witness is broken.
2001-04-17 04:18:08 +00:00
jhb
3a52576aa4 - Add appropriate #ifndef/#define/#endif to protect against multiple
inclusions.
- Blow away all evidence of a static curpcb as curpcb is a per-CPU variable
  and this definition is now bogus.
2001-04-17 02:51:28 +00:00
jhb
f8ca9d2d20 - Fix memory barriers in atomic operations so that the barriers are always
"inside" of locked regions.  That is, an acquire atomic operation will
  always enforce a memory barrier after the atomic operation and a release
  operation will always enforce a memory barrier before the atomic
  operation.
- Explicitly use 'mb' instead of 'wmb' in release atomic operations.  The
  'wmb' memory barrier is not strong enough to guarantee coherence with
  other processors.  This is effectively a nop since alpha_wmb() actually
  performs a 'mb' and not a 'wmb', but I wanted the code to be more
  correct since at some point in the future alpha_wmb()'s implementation
  may switch to being a real 'wmb'.
2001-04-17 02:50:05 +00:00
jhb
9a897f4887 Add a cpu_throw() function that secondary CPU's can use for their first
context switch.
2001-04-17 02:46:13 +00:00
jhb
16fab762d5 In exception_return(), test for usermode before testing the IPL to see if
we should call ast().  This allows us to branch to a separate Lkernelret
label so we can fixup the saved t7 register in the trapframe.  Otherwise
we can run into a problem on SMP systems where a process is interrupted by
a trap or interrupt on one CPU, migrates to another CPU, and then returns
with the t7 in the stack clobbering the CPU's t7.  As a result, two CPU's
would both point to the same per-CPU data and things would go downhill from
there.

Sleuthing help by:	gallatin
2001-04-17 02:44:35 +00:00
jhb
da16744cc0 - Stop other CPU's in the SMP case when we enter ddb.
- Add a new ddb command: 'show pcpu' similar to the i386 command added
  recently.  By default it displays the current CPU's info, but an optional
  argument can specify the logical ID of a specific CPU to examine.
2001-04-17 02:41:41 +00:00
obrien
c7790304de Turn on kernel debugging support (DDB, INVARIANTS, INVARIANT_SUPPORT, WITNESS)
by default while SMPng is still being developed.

Submitted by:	jhb
2001-04-15 19:37:28 +00:00
jhb
4dd39ab878 Rename the IPI API from smp_ipi_* to ipi_* since the smp_ prefix is just
"redundant noise" and to match the IPI constant namespace (IPI_*).

Requested by:	bde
2001-04-11 17:06:02 +00:00
jhb
fbaa8935ec Parse the various argument registers in the printtrap() function so that
one doesn't have to go grab a reference manual to decode them by hand every
time the alpha kernel falls over.

Reviewed by:	drew, -alpha
2001-04-11 16:20:11 +00:00
gallatin
35ffa3254c insert a magical second memory barrier prior to calling draina() in
badaddr_read().  This fixes 'machine check in pal mode' halts on
ev5 2100As.

MFC candidate -- after spending 6 hours tracking this down, I checked and
discovered that it has been in NetBSD for over a year, so it should be safe
for MFC into 4.3-RELEASE
2001-04-08 16:43:59 +00:00
gallatin
ba67d5732f Regen after adding linux_sched_get_priority_max() and
linux_sched_get_priority_min()
2001-04-03 18:01:41 +00:00
gallatin
40313aa944 Add linux_sched_get_priority_max() and linux_sched_get_priority_min() to
alpha md code & unbreak kernel build
2001-04-03 17:58:44 +00:00
gallatin
52dacf6017 Recognize a few newer cpus (pca57, ev67 & ev68) and update systypes to
include "CUSCO" and "Eiger" while I'm at it.
2001-03-30 22:04:08 +00:00
obrien
926a83f21a Removed the ``#if 0'' that turned bounds_check_with_label() into worse
than a NOP.  bounds_check_with_label() would return -1 yet NOT set any
of the bio flags to show an error.  This meant the caller would not
properly see that bounds_check_with_label() did not do any work.  This
prevented newfs(8) from being able to write a file system on any partition
other than `c' on a `ccd'.

The logs of this file do not tell _why_ bounds_check_with_label() was
emasculated.  Nor are there any `XXX' comments.  So we'll unemasculated
it, and see what breaks.

Submitted by:	gallatin
2001-03-29 20:18:45 +00:00
gallatin
a4de9511b5 resurrect the declaration of order to unbreak kernel build. Put
it inside the ifdef so as to avoid unused variable warnings
2001-03-28 19:02:08 +00:00
jhb
79cf991a6b Convert the allproc and proctree locks from lockmgr locks to sx locks. 2001-03-28 11:52:56 +00:00
jhb
b47bfbe544 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
jhb
0c490fd02e Rework the witness code to work with sx locks as well as mutexes.
- Introduce lock classes and lock objects.  Each lock class specifies a
  name and set of flags (or properties) shared by all locks of a given
  type.  Currently there are three lock classes: spin mutexes, sleep
  mutexes, and sx locks.  A lock object specifies properties of an
  additional lock along with a lock name and all of the extra stuff needed
  to make witness work with a given lock.  This abstract lock stuff is
  defined in sys/lock.h.  The lockmgr constants, types, and prototypes have
  been moved to sys/lockmgr.h.  For temporary backwards compatability,
  sys/lock.h includes sys/lockmgr.h.
- Replace proc->p_spinlocks with a per-CPU list, PCPU(spinlocks), of spin
  locks held.  By making this per-cpu, we do not have to jump through
  magic hoops to deal with sched_lock changing ownership during context
  switches.
- Replace proc->p_heldmtx, formerly a list of held sleep mutexes, with
  proc->p_sleeplocks, which is a list of held sleep locks including sleep
  mutexes and sx locks.
- Add helper macros for logging lock events via the KTR_LOCK KTR logging
  level so that the log messages are consistent.
- Add some new flags that can be passed to mtx_init():
  - MTX_NOWITNESS - specifies that this lock should be ignored by witness.
    This is used for the mutex that blocks a sx lock for example.
  - MTX_QUIET - this is not new, but you can pass this to mtx_init() now
    and no events will be logged for this lock, so that one doesn't have
    to change all the individual mtx_lock/unlock() operations.
- All lock objects maintain an initialized flag.  Use this flag to export
  a mtx_initialized() macro that can be safely called from drivers.  Also,
  we on longer walk the all_mtx list if MUTEX_DEBUG is defined as witness
  performs the corresponding checks using the initialized flag.
- The lock order reversal messages have been improved to output slightly
  more accurate file and line numbers.
2001-03-28 09:03:24 +00:00
jhb
3e3a661612 Switch from save/disable/restore_intr() to critical_enter/exit(). 2001-03-28 03:06:10 +00:00
jhb
4572ff9c78 - Switch from using save/disable/restore_intr to using critical_enter/exit
and change the u_int mtx_saveintr member of struct mtx to a critical_t
  mtx_savecrit.
- On the alpha we no longer need a custom _get_spin_lock() macro to avoid
  an extra PAL call, so remove it.
- Partially fix using mutexes with WITNESS in modules.  Change all the
  _mtx_{un,}lock_{spin,}_flags() macros to accept explicit file and line
  parameters and rename them to use a prefix of two underscores.  Inside
  of kern_mutex.c, generate wrapper functions for
  _mtx_{un,}lock_{spin,}_flags() (only using a prefix of one underscore)
  that are called from modules.  The macros mtx_{un,}lock_{spin,}_flags()
  are mapped to the __mtx_* macros inside of the kernel to inline the
  usual case of mutex operations and map to the internal _mtx_* functions
  in the module case so that modules will use WITNESS and KTR logging if
  the kernel is compiled with support for it.
2001-03-28 02:40:47 +00:00
jhb
3e4166569d - Add the new critical_t type used to save state inside of critical
sections.
- Add implementations of the critical_enter() and critical_exit() functions
  and remove restore_intr() and save_intr().
- Remove the somewhat bogus disable_intr() and enable_intr() functions on
  the alpha as the alpha actually uses a priority level and not simple bit
  flag on the CPU.
2001-03-28 02:31:54 +00:00
jhb
58d30ccb09 Revert previous commit which had a bogus message. It actually just
disabled the somewhat annoying KTR log trace for clock interrupts.
2001-03-28 02:03:29 +00:00
jhb
8106ecf771 - Include <machine/prom.h> to get the prototype for prom_halt().
- If there is no gdb device, just return without trying to return any
  value since gdb_handle_exception() returns void.
- When calling prom_halt(), pass in a value telling it to actually halt
  and not to randomly choose whether or not to halt or reboot depending on
  whatever value happened to be in a0 when the call was made.
2001-03-28 01:54:06 +00:00
gallatin
bffff76146 Check whether we need to do a full restore after handling ASTs. If
an AST results in a signal being delivered, we'll need to do a full register
restore so as to properly setup the signal handler.  This is somewhat of
a pessimization, because ast() will be called twice in this case.

This fixes several problems that have been reported where signal intensive
userland apps (most notably dump) have been SEGV'ing for no fault of their
own.

Thanks to Peter Jeremy <peter.jeremy@alcatel.com.au> for presenting the
AST scenario which led to me fiinally figuring this out.

Reviewed by: jhb
2001-03-28 01:19:41 +00:00
phk
c47745e977 Send the remains (such as I have located) of "block major numbers" to
the bit-bucket.
2001-03-26 12:41:29 +00:00
ume
d26371de82 Unbreak build on alpha.
- Move in_port_t to sys/types.h.
  - Nuke in_addr_t from each endian.h.

Reported by:	jhb
2001-03-24 15:17:27 +00:00
tmm
76ba4861cd Export intrnames and intrcnt as sysctls (hw.nintr, hw.intrnames and
hw.intrcnt).

Approved by:	rwatson
2001-03-23 03:45:17 +00:00
peter
670e711dd1 Use a generic implementation of the Fowler/Noll/Vo hash (FNV hash).
Make the name cache hash as well as the nfsnode hash use it.

As a special tweak, create an unsigned version of register_t.  This allows
us to use a special tweak for the 64 bit versions that significantly
speeds up the i386 version (ie: int64 XOR int64 is slower than int64
XOR int32).

The code layout is a little strange for the string function, but I was
able to get between 5 to 10% improvement over the original version I
started with. The layout affects gcc code generation choices and this way
was fastest on x86 and alpha.

Note that 'CPUTYPE=p3' etc makes a fair difference to this.  It is
around 45% faster with -march=pentiumpro on a p6 cpu.
2001-03-17 09:31:06 +00:00
gallatin
4ce4255f83 prevent gdb from panic'ing an alpha with "mutex Giant not owned"
reviewed by: jhb
2001-03-16 21:44:21 +00:00
gallatin
1e1aef3713 remove bogus check -- for kernel threads we fork off of proc0, not curproc
This was causing panics when modules which create kthreads were loaded
after boot.

pointed out by: jake, jhb
2001-03-15 02:32:26 +00:00
jhb
b3ef374c76 - Call fork1() directly instead of calling rfork() so that it doesn't mask
out RFSTOPPED.
- Lock the child process when settings p_sigparent instead of locking the
  parent.

Pointy-hat to:	me
2001-03-11 23:41:55 +00:00
jhb
f108bc4208 Fix mtx_legal2block. The only time that it is bad to block on a mutex is
if we hold a spin mutex, since we can trivially get into deadlocks if we
start switching out of processes that hold spinlocks.  Checking to see if
interrupts were disabled was a sort of cheap way of doing this since most
of the time interrupts were only disabled when holding a spin lock.  At
least on the i386.  To fix this properly, use a per-process counter
p_spinlocks that counts the number of spin locks currently held, and
instead of checking to see if interrupts are disabled in the witness code,
check to see if we hold any spin locks.  Since child processes always
start up with the sched lock magically held in fork_exit(), we initialize
p_spinlocks to 1 for child processes.  Note that proc0 doesn't go through
fork_exit(), so it starts with no spin locks held.

Consulting from:	cp
2001-03-09 07:24:17 +00:00
jhb
1de39ad1a0 Unrevert the pmap_map() changes. They weren't broken on x86.
Sense beaten into me by:	peter
2001-03-07 05:29:21 +00:00
jhb
9c1fb038d7 - Release Giant a bit earlier on syscall exit.
- Don't try to grab Giant before postsig() in userret() as it is no longer
  needed.
- Don't grab Giant before psignal() in ast() but get the proc lock instead.
2001-03-07 03:53:39 +00:00
jhb
9cd254601b Grab the process lock while calling psignal and before calling psignal. 2001-03-07 03:37:06 +00:00
jhb
83d74ad162 Use the proc lock to protect p_pptr when waking up our parent in cpu_exit()
and remove the mpfixme() message that is now fixed.
2001-03-07 03:20:15 +00:00
jhb
9862451770 Just use proc lock to protect reading of p_pptr rather than a proctree
lock.
2001-03-07 03:18:36 +00:00
jhb
74a74a3282 Back out the pmap_map() change for now, it isn't completely stable on the
i386.
2001-03-07 01:04:17 +00:00
jhb
a710dd7194 - Rework pmap_map() to take advantage of direct-mapped segments on
supported architectures such as the alpha.  This allows us to save
  on kernel virtual address space, TLB entries, and (on the ia64) VHPT
  entries.  pmap_map() now modifies the passed in virtual address on
  architectures that do not support direct-mapped segments to point to
  the next available virtual address.  It also returns the actual
  address that the request was mapped to.
- On the IA64 don't use a special zone of PV entries needed for early
  calls to pmap_kenter() during pmap_init().  This gets us in trouble
  because we end up trying to use the zone allocator before it is
  initialized.  Instead, with the pmap_map() change, the number of needed
  PV entries is small enough that we can get by with a static pool that is
  used until pmap_init() is complete.

Submitted by:		dfr
Debugging help:		peter
Tested by:		me
2001-03-06 06:06:42 +00:00
jhb
56db3fe70f Create clone'd linux processes as stopped processes at first and don't
actually make them runnable until after the emulator layer has had a chance
to perform fixups.
2001-03-06 02:59:46 +00:00
jhb
d2412f5103 Quiet a warning due to bus_size_t being a long on the alpha. 2001-03-06 02:52:06 +00:00
gallatin
879f1f29f6 handle reserved/unimplemented instruction (opDec) faults
This lets us run programs containing newer (eg bwx) instructions
on older (eg EV5 and less) machines.  One win is that we can
now run Acrobat4 on EV4s and EV5s.

Obtained from: NetBSD
Glanced at by: mjacob
2001-03-05 21:21:01 +00:00
gallatin
85742c3ae3 Add MODULE_DEPEND() for the sysvipc modules. This allows the linulator
to load when sysvipc is not in the kernel

Reported by: naddy@mips.inka.de (Christian Weisgerber)
2001-03-05 17:59:18 +00:00
gallatin
82bcd89266 sync with i386:
MFS: bring the consistent `compat_3_brand' support

This should fix the linux-related panics reported
by naddy@mips.inka.de (Christian Weisgerber)

Forgotten by: obrien
2001-03-05 17:56:58 +00:00
gallatin
748e026d90 Fix the unaligned access code to handle stores from R31 (zero)
PR alpha/25535
2001-03-05 16:18:23 +00:00
dfr
430eceb8a5 Disable interrupts while sanity checking the owner of the floating point
state. It is possible that we could be preempted part way through the
check.
2001-03-04 23:29:23 +00:00
dfr
dd8ce5c6ba Account for the new flags field in struct trapframe. 2001-03-03 15:11:37 +00:00
jhb
5eea0dc69d Rename switch_trampoline() to fork_trampoline() on the alpha and ia64.
Suggested by:	dfr
2001-02-22 16:56:53 +00:00
jhb
667eb173f1 - Use TRAPF_PC() on the alpha to acess the PC in the trap frame.
- Don't hold sched_lock around addupc_task() as this apparently breaks
  profiling badly due to sched_lock being held across copyin().

Reported by:	bde (2)
2001-02-22 16:23:12 +00:00
jhb
41a6853d24 GC unused and now obsolete assertion macros. 2001-02-22 15:45:49 +00:00
jhb
202f41c3e5 Cleanup and clarify the comments above switch_trampoline(). 2001-02-22 15:06:19 +00:00
jhb
4f27bdda0e Remove attempt to add in PREEMPTION #ifdef test in MI code that didn't
work because opt_preemption.h wasn't #include'd.  Instead, make use of the
do_switch parameter to ithread_schedule() and do the check in the alpha
interrupt code.
2001-02-21 22:51:00 +00:00
gallatin
bb9ee8e09f Fix the osfulator in the face of Doug's optimized system call return path.
We now need to set [FRAME_FLAGS] to zero to force a full restore of state
after a signal.

reported by: naddy@mips.inka.de (Christian Weisgerber)
2001-02-21 18:48:06 +00:00
jhb
ca00514d9e - Add a new ithread_schedule() function to do the bulk of the work of
scheduling an interrupt thread to run when needed.  This has the side
  effect of enabling support for entropy gathering from interrupts on
  all architectures.
- Change the software interrupt and x86 and alpha hardware interrupt code
  to use ithread_schedule() for most of their processing when scheduling
  an interrupt to run.
- Remove the pesky Warning message about interrupt threads having entropy
  enabled.  I'm not sure why I put that in there in the first place.
- Add more error checking for parameters and change some cases that
  returned EINVAL to panic on failure instead via KASSERT().
- Instead of doing a documented evil hack of setting the P_NOLOAD flag
  on every interrupt thread whose pri was SWI_CLOCK, set the flag
  explicity for clk_ithd's proc during start_softintr().
2001-02-20 10:25:29 +00:00
jhb
27efeb0d30 - Don't call clear_resched() in userret(), instead, clear the resched flag
in mi_switch() just before calling cpu_switch() so that the first switch
  after a resched request will satisfy the request.
- While I'm at it, move a few things into mi_switch() and out of
  cpu_switch(), specifically set the p_oncpu and p_lastcpu members of
  proc in mi_switch(), and handle the sched_lock state change across a
  context switch in mi_switch().
- Since cpu_switch() no longer handles the sched_lock state change, we
  have to setup an initial state for sched_lock in fork_exit() before we
  release it.
2001-02-20 05:26:15 +00:00
gallatin
13f0b0408b Regen 2001-02-20 03:48:53 +00:00
gallatin
779d4e2c1a Sort out the umount breakage introduced in the last 2 revisions.
Please note:
When committing changes to this file, it is important to note that
linux is not freebsd -- their system call numbers (and sometimes names)
are different on different platforms.  When in doubt (and you always need
to be) check the arch-specific unistd.h and entry.S files in the linux
kernel sources to see what the syscall numbers really are.
2001-02-20 03:47:59 +00:00
jlemon
fec704719a Regenerate. 2001-02-20 02:16:38 +00:00
jlemon
a53edc4984 Fix duplicate linux_mount definition 2001-02-20 02:16:07 +00:00
bde
49ef1aaa13 Changed the aston() family to operate on a specified process instead of
always on curproc.  This is needed to implement signal delivery properly
(see a future log message for kern_sig.c).

Debogotified the definition of aston().  aston() was defined in terms
of signotify() (perhaps because only the latter already operated on
a specified process), but aston() is the primitive.

Similar changes are needed in the ia64 versions of cpu.h and trap.c.
I didn't make them because the ia64 is missing the prerequisite changes
to make astpending and need_resched per-process and those changes are
too large to make without testing.
2001-02-19 04:15:59 +00:00
ume
e4a288b688 Correct disordering which is corresponding to bde's fix to
i386/include/ansi.h.
2001-02-17 14:51:11 +00:00
jlemon
8c0f93bb9b Allow debugging output to be controlled on a per-syscall granularity.
Also clean up debugging output in a slightly more uniform fashion.

The default behavior remains the same (all debugging output is turned on)
2001-02-16 16:40:43 +00:00
jlemon
717f1e459e Re-gen auto generated files. 2001-02-16 14:47:24 +00:00
jlemon
fd27a8db25 Remove dummy stub functions. 2001-02-16 14:46:16 +00:00
jlemon
065a73369e Add mount syscall to linux emulation. Also improve emulation of reboot. 2001-02-16 14:42:11 +00:00
ume
bf66c2eda8 Correct 2nd argument of getnameinfo(3) to socklen_t.
Reviewed by:	itojun
2001-02-15 10:35:55 +00:00
mjacob
7e987d1dff Doug found that doing a W1C on MCPCIA_INT_REQ just around the time you
clear MCPCIA_INT_MASK0 helps things substantially. So, why not indeed?

Rearrange irq and cookie calculation to use shifts/masks instead
of division. Fix things to correctly remember the intpin for that
one in a million non-INTA PCI device.
2001-02-13 22:48:12 +00:00
mjacob
3651ee3457 add defines for EISA, NCR IRQs; add defines for MID and SLOT shift values 2001-02-13 22:46:30 +00:00
mjacob
7af01441d3 add mcbus minimum id value 2001-02-13 22:45:53 +00:00
mjacob
b31e6b9052 Doug noticed that the bit values for _MCPCIA_INT_ACK0/_MCPCIA_INT_ACK1
made no sense in the context of wrapping them within the _SYBRIDGE macro-
or anything like it- so we concluded that this must have been a typo
in the docs.  This also doesn't use the same bridge offset as anything
else.

Add some defines for the INT_CTL register.
2001-02-13 22:44:21 +00:00
jake
55d5108ac5 Implement a unified run queue and adjust priority levels accordingly.
- All processes go into the same array of queues, with different
  scheduling classes using different portions of the array.  This
  allows user processes to have their priorities propogated up into
  interrupt thread range if need be.
- I chose 64 run queues as an arbitrary number that is greater than
  32.  We used to have 4 separate arrays of 32 queues each, so this
  may not be optimal.  The new run queue code was written with this
  in mind; changing the number of run queues only requires changing
  constants in runq.h and adjusting the priority levels.
- The new run queue code takes the run queue as a parameter.  This
  is intended to be used to create per-cpu run queues.  Implement
  wrappers for compatibility with the old interface which pass in
  the global run queue structure.
- Group the priority level, user priority, native priority (before
  propogation) and the scheduling class into a struct priority.
- Change any hard coded priority levels that I found to use
  symbolic constants (TTIPRI and TTOPRI).
- Remove the curpriority global variable and use that of curproc.
  This was used to detect when a process' priority had lowered and
  it should yield.  We now effectively yield on every interrupt.
- Activate propogate_priority().  It should now have the desired
  effect without needing to also propogate the scheduling class.
- Temporarily comment out the call to vm_page_zero_idle() in the
  idle loop.  It interfered with propogate_priority() because
  the idle process needed to do a non-blocking acquire of Giant
  and then other processes would try to propogate their priority
  onto it.  The idle process should not do anything except idle.
  vm_page_zero_idle() will return in the form of an idle priority
  kernel thread which is woken up at apprioriate times by the vm
  system.
- Update struct kinfo_proc to the new priority interface.  Deliberately
  change its size by adjusting the spare fields.  It remained the same
  size, but the layout has changed, so userland processes that use it
  would parse the data incorrectly.  The size constraint should really
  be changed to an arbitrary version number.  Also add a debug.sizeof
  sysctl node for struct kinfo_proc.
2001-02-12 00:20:08 +00:00
markm
4e9c36b300 RIP <machine/lock.h>.
Some things needed bits of <i386/include/lock.h> - cy.c now has its
own (only) copy of the COM_(UN)LOCK() macros, and IMASK_(UN)LOCK()
has been moved to <i386/include/apic.h> (AKA <machine/apic.h>).
Reviewed by:	jhb
2001-02-11 10:44:09 +00:00
mjacob
7fa161d82a Temporary workaround to get things to compile. I could have updated
genassym here, but what I've also noticed is that we're dorking
with a mutex directly at assembler level- I'm not sure that this
is wise at this stage in the SMP port- I think it's going to be much
safer for a while to do things in C until SMP wunderkind figure out
what works and slow down this 3 order differential...
2001-02-10 23:22:49 +00:00
jake
34c4c58685 Clear the reschedule flag after finding it set in userret(). This
used to be in cpu_switch(), but I don't see any difference between
doing it here.
2001-02-10 20:33:35 +00:00
jhb
3896c29164 Reenable preemption on interrupts. My last commit accidentally reverted
it as I was playing with some other ways of doing kernel preemption.

You must still specify the PREEMPTION option in your config file to get a
preemptive kernel.
2001-02-10 02:46:50 +00:00
jhb
a9c84e00da - Make astpending and need_resched process attributes rather than CPU
attributes.  This is needed for AST's to be properly posted in a preemptive
  kernel.  They are backed by two new flags in p_sflag: PS_ASTPENDING and
  PS_NEEDRESCHED.  They are still accesssed by their old macros:
  aston(), astoff(), etc.  For completeness, an astpending() macro has been
  added to check for a pending AST, and clear_resched() has been added to
  clear need_resched().
- Rename syscall2() on the x86 back to syscall() to be consistent with
  other architectures.
2001-02-10 02:20:34 +00:00
jhb
5f9a24a51c Add a macro mtx_intr_enable() to alter a spin lock such that interrupts
will be enabled when it is released.
2001-02-10 02:15:18 +00:00
jhb
4444722abe Use the MI ithread helper functions in the alpha hardware interrupt code. 2001-02-09 17:53:23 +00:00
jhb
b30904d840 - Catch up to the new swi API changes:
- Use swi_* function names.
  - Use void * to hold cookies to handlers instead of struct intrhand *.
- In sio.c, use 'driver_name' instead of "sio" as the name of the driver
  lock to minimize diffs with cy(4).
2001-02-09 17:46:35 +00:00
jhb
6e847a265b Move the initailization of the proc lock for proc0 very early into the MD
startup code.
2001-02-09 16:25:16 +00:00
bmilekic
f364d4ac36 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
asmodai
47a2266000 Fix typo: seperate -> separate.
Seperate does not exist in the english language.

Submitted to look at by:	kris
2001-02-06 10:39:38 +00:00
asmodai
010d68ca1c Fix typo: wierd -> weird. 2001-02-06 09:20:17 +00:00
jhb
c490404e3c - Minimize the amount of duplicated code for the PREEMPTION #ifdef, it now
only covers about 3-4 lines.
- Don't lower the IPL while we are on the interrupt stack.  Instead, save
  the raised IPL and change the saved IPL in sched_lock to IPL_0 before
  calling mi_switch().  When we are resumed, restore the saved IPL in
  sched_lock to the saved raised IPL so that when we release sched_lock
  we won't lower the IPL.  Without this, we would get nested interrupts
  that would overflow the kernel stack.

Tested by:	mjacob
2001-02-05 19:34:25 +00:00
phk
709379c1ae Another round of the <sys/queue.h> FOREACH transmogriffer.
Created with:   sed(1)
Reviewed by:    md5(1)
2001-02-04 16:08:18 +00:00
peter
e014685526 Clean up some leftovers from the root mount cleanup that was done some
time ago.  FFS_ROOT and CD9660_ROOT are obsolete.
2001-02-04 15:35:10 +00:00
phk
e87f7a15ad Mechanical change to use <sys/queue.h> macro API instead of
fondling implementation details.

Created with: sed(1)
Reviewed by: md5(1)
2001-02-04 13:13:25 +00:00
peter
fe7d89e3f2 All the world is not an i386. Merge rev 1.438 of i386/i386/machdep.c.
Make buffer_map a system map.
2001-02-04 07:00:47 +00:00
peter
bb46130566 Grumble, I broke this file with a vi accident before commit. :-(
Submitted by: Christian Weisgerber <naddy@mips.inka.de>
2001-02-04 04:13:12 +00:00
peter
73c13f2592 Conditionalize the alpha interrupt preemption for now to buy us some
time to sort out the quirks.  Add 'options PREEMPTION' to test it on
the Alpha.

Reviewed by: jhb
2001-02-03 03:26:39 +00:00
dfr
fed402db9f * Move exception_return to exception.s which is a more logical home for it.
* Optimise the return path for syscalls so that they only restore a minimal
  set of registers instead of performing a full exception_return.

A new flag in the trapframe indicates that the frame only holds partial
state. When it is necessary to perform a full state restore (e.g. after an
execve or signal), the flag is cleared to force a full restore.
2001-02-02 10:20:30 +00:00
peter
4c9b874c28 Argh, I missed some #include "sio.h". I was looking primarily for NSIO
when I did my sweeps.

Submitted by: mjacob
2001-02-02 01:48:40 +00:00
mjacob
e2f5e56cc5 Remove inclusion of now vanished sio.h. 2001-02-01 21:59:00 +00:00
mjacob
96e43ebf7b Guess that this is what Doug *intended* to commit.... 2001-02-01 21:58:34 +00:00
jake
a9f4853a90 Implement preemptive scheduling of hardware interrupt threads.
- If possible, context switch to the thread directly in sched_ithd(),
  rather than triggering a delayed ast reschedule.

- Disable interrupts while restoring fpu state in the trap handler,
  in order to ensure that we are not preempted in the middle, which
  could cause migration to another cpu.

Reviewed by:	peter
Tested by:	peter (alpha)
2001-02-01 03:34:20 +00:00
dfr
ba26212fc9 * Move exception_return to exception.s which is a more logical home for it.
* Optimise the return path for syscalls so that they only restore a minimal
  set of registers instead of performing a full exception_return.

A new flag in the trapframe indicates that the frame only holds partial
state. When it is necessary to perform a full state restore (e.g. after an
execve or signal), the flag is cleared to force a full restore.
2001-01-31 11:17:00 +00:00
peter
9b4aea27e5 Remove count for NSIO. The only places it was used it were incorrect.
(alpha-gdbstub.c got sync'ed up a bit with the i386 version)
2001-01-31 10:54:45 +00:00
jhb
5f8a4ce890 Remove unnecessary locking to protect the p_upages_obj and p_addr
pointers.
2001-01-30 00:35:35 +00:00
peter
b7edc4f4e3 Send "#if NISA > 0" to the bit-bucket and replace it with an option.
These were compile-time "is the isa code present?" tests and not
'how many isa busses' tests.
2001-01-29 09:38:39 +00:00
gallatin
ba6119ff82 The API UP1100 is close enough to a UP1000 that FreeBSD just works on it, so
document that fact.

Thanks to Peter Petrakis <ppetrakis@alphalinux.org> for doing a test boot.
2001-01-27 20:56:00 +00:00
jhb
bb9151616e Turn on DEVFS by default for the alpha. Aside from vinum as mentioned by
phk it should work fine.  If you need vinum, then don't add this to your
kernel config until vinum catches up to DEVFS.
2001-01-27 08:34:58 +00:00
jhb
17984f33e4 Update some comments, s0 in the pcb of a child returning from fork1() is
now passed in as a0 to fork_exit() and and s2 is passed in as a1.
2001-01-26 23:32:38 +00:00
gallatin
10b4b1aae3 The osfulator needs sysvipc to work. Thanks to DES's commit to
the i386 linulator for pointing this out.

The alpha linulator doesn't need a dependancy, as it already
depends on the osfulator.
2001-01-26 17:12:30 +00:00
jhb
238ea9ee91 Back out over-aggressive locking of p->p_cred.
Requested by:	alfred
2001-01-25 01:09:44 +00:00
jhb
e532f9ac32 Remove prototype for child_return(). 2001-01-24 22:00:13 +00:00
jhb
af00dc8eef - Change fork_exit() to take a pointer to a trapframe as its 3rd argument
instead of a trapframe directly.  (Requested by bde.)
- Convert the alpha switch_trampoline to call fork_exit() and use the MI
  fork_return() instead of child_return().
- Axe child_return().
2001-01-24 21:59:25 +00:00
jhb
9f8dbccd56 - Remove some unused and unneeded atomic operations sitting in mp_machdep.c
that are already implemented in atomic.h.
- Fix SMP kernel builds.
2001-01-24 19:49:13 +00:00
jhb
cf8988088c Oops, when converting if (foo) panic() to a KASSERT(), you have to invert
the test case.

Spotted by:	peter, jasone
2001-01-24 13:10:17 +00:00
jasone
8d2ec1ebc4 Convert all simplelocks to mutexes and remove the simplelock implementations. 2001-01-24 12:35:55 +00:00
jhb
1df50e8aac Proc locking. 2001-01-24 10:27:11 +00:00
jhb
02a611ef0c Use queue macros. 2001-01-24 10:26:51 +00:00
jhb
283a1150c5 Add a prototype for isa_irq_mask() to quiet a warning. 2001-01-24 10:25:44 +00:00
jhb
738a41fdee Wrap the IPI definitions and function prototypes in #ifdef SMP. 2001-01-24 10:25:09 +00:00
jhb
264b1fe22a - Rename the gd_cpuno member of struct globaldata to gd_cpuid.
- Add a globaldata_register() prototype in the SMP case.
2001-01-24 10:24:49 +00:00
jhb
77583447a9 - Proc locking.
- P_OWEUPC -> PS_OWEUPC.
2001-01-24 10:23:54 +00:00
jhb
eabcf31b82 - Change userret() to take a struct trapframe * as its second argument and
to extract the PC from that to send to addupc_task() so that it can be
  called from MI code.
- Remove all traces of have_giant with extreme prejudice and use
  mtx_owned(&Giant) instead where appropriate.
- Proc locking.
- P_FOO -> PS_FOO.
- Don't grab Giant just to look in curproc's p_addr during a trap since we
  may choose to immediately exit.  Instead, delay grabbing Giant a bit
  until we actually need it.
- Don't reset 'p' to 'curproc' in syscall() to handle the case of a child
  returning from fork1() since children don't return via syscall().
- Remove an XXX comment in ast() that questions the correctness of the
  userland check.  The code is correct.
2001-01-24 10:23:21 +00:00
jhb
451c942dba - Proc locking.
- P_INMEM -> PS_INMEM.
2001-01-24 10:16:23 +00:00
jhb
8e27ac396a - Proc locking.
- Don't send IPIs for pmap_invalidate_page() or pmap_invalidate_all()
  in the UP case.
- Catch up to cpuno -> cpuid.
- Convert some sanity checks that were #ifdef DIAGNOSTIC to KASSERT()'s.
2001-01-24 10:16:01 +00:00
jhb
277ef6eaf3 - Adjust some whitespace to reduce diffs with the i386 version.
- Rename the per-CPU variable 'cpuno' to 'cpuid'.  This was done so that
  there is one consistent name across all architectures for a logical
  CPU id.
- Remove all traces of IRQ forwarding.
- Add globaldata_register() hook called by globaldata_init() to register
  globaldata structures in the cpuid_to_globaldata array.
- Catch up to P_FOO -> PS_FOO.
- Bring across some fixes for forwarded_statclock() from the i386 version
  to handle ithreads and idleproc properly.
- Rename addugd_intr_forwarded() to addupc_intr_forwarded() so that it is
  the same name on all architectures.
- Set flags in p_sflag instead of calling psignal() from
  forward_hardclock().
- Proc locking.
- When we handle an IPI, turn off its bit in the mask of IPI's we are
  currently handling so that an IPI doesn't send a CPU into an infinite
  loop.
2001-01-24 10:13:13 +00:00
jhb
a1ce5e9db8 - Initialize curproc, proc0.p_heldmtx, and proc0.p_contested earlier so
that mutex operations work.
- Enter Giant earlier so we hold it during boot.
- Proc locking.
- Move globaldata_init() into here from mp_machdep.c so that UP kernels
  don't depend on mp_machdep.c.  Use a callout in the SMP case to register
  the boot processor's globaldata in the cpuid_to_globaldata array.
2001-01-24 10:07:42 +00:00
jhb
8168399f03 - Wrap the IPI interrupt handler in #ifdef SMP.
- Catch up to cpuno -> cpuid change.
- Add parens around a subexpression to quiet a warning.
2001-01-24 10:05:24 +00:00
jhb
8c0af7d84b cpuno -> cpuid. 2001-01-24 10:04:32 +00:00
jhb
73a3d8450d Don't import the nonexistent astpending variable. 2001-01-24 10:03:05 +00:00
jhb
87deba6ead Wrap the startup code used by secondary processors in #ifdef SMP. 2001-01-24 10:01:53 +00:00
jasone
ec55088093 Move most of sys/mutex.h into kern/kern_mutex.c, thereby making the mutex
inline functions non-inlined.  Hide parts of the mutex implementation that
should not be exposed.

Make sure that WITNESS code is not executed during boot until the mutexes
are fully initialized by SI_SUB_MUTEX (the original motivation for this
commit).

Submitted by:	peter
2001-01-21 22:34:43 +00:00
des
b3c27aaaf7 First step towards an MP-safe zone allocator:
- have zalloc() and zfree() always lock the vm_zone.
 - remove zalloci() and zfreei(), which are now redundant.

Reviewed by:	bmilekic, jasone
2001-01-21 22:23:11 +00:00
jake
937122ae6d Make intr_nesting_level per-process, rather than per-cpu. Setup
interrupt threads to run with it always >= 1, so that malloc can
detect M_WAITOK from "interrupt" context.  This is also necessary
in order to context switch from sched_ithd() directly.

Reviewed By:	peter
2001-01-21 19:25:07 +00:00
jasone
24d53563ed Remove MUTEX_DECLARE() and MTX_COLD. Instead, postpone full mutex
initialization until after malloc() is safe to call, then iterate through
all mutexes and complete their initialization.

This change is necessary in order to avoid some circular bootstrapping
dependencies.
2001-01-21 07:52:20 +00:00
peter
a0281122c3 This conf file seems to have rotted quite a bit.. 2001-01-19 13:03:41 +00:00
peter
feb7598906 Remove the now-empty ipl_funcs.c file on all platforms. 2001-01-19 09:59:56 +00:00
peter
940f70431f Remove the static splXXX functions and replace them by static __inline
stubs.  Remove the xxx_imask variables which have been all but gone for
a while.
2001-01-19 09:57:29 +00:00
bmilekic
37decc93f5 Implement MTX_RECURSE flag for mtx_init().
All calls to mtx_init() for mutexes that recurse must now include
the MTX_RECURSE bit in the flag argument variable. This change is in
preparation for an upcoming (further) mutex API cleanup.
The witness code will call panic() if a lock is found to recurse but
the MTX_RECURSE bit was not set during the lock's initialization.

The old MTX_RECURSE "state" bit (in mtx_lock) has been renamed to
MTX_RECURSED, which is more appropriate given its meaning.

The following locks have been made "recursive," thus far:
eventhandler, Giant, callout, sched_lock, possibly some others declared
in the architecture-specific code, all of the network card driver locks
in pci/, as well as some other locks in dev/ stuff that I've found to
be recursive.

Reviewed by: jhb
2001-01-19 01:59:14 +00:00
phk
d147a07119 These files have been on deathrow for a couple of months, no appeal. 2001-01-16 10:01:56 +00:00
markm
fde03d4ba0 Remove NOBLOCKRANDOM as a compile-time option. Instead, provide
exactly the same functionality via a sysctl, making this feature
a run-time option.

The default is 1(ON), which means that /dev/random device will
NOT block at startup.

setting kern.random.sys.seeded to 0(OFF) will cause /dev/random
to block until the next reseed, at which stage the sysctl
will be changed back to 1(ON).

While I'm here, clean up the sysctls, and make them dynamic.
Reviewed by:		des
Tested on Alpha by:	obrien
2001-01-14 17:50:15 +00:00
jake
422162e650 Remove unused per-cpu variables inside_intr and ss_eflags. 2001-01-12 07:47:54 +00:00
jake
4f7710fc47 - Remove compatibility macros for accessing per-cpu variables.
__FreeBSD_version 500015 can be used to detect their disappearance.
- Move the symbols for SMP_prvspace and lapic from globals.s to
  locore.s.
- Remove globals.s with extreme prejudice.
2001-01-11 14:46:26 +00:00
jake
4f5d8ed825 Use PCPU_GET, PCPU_PTR and PCPU_SET to access all per-cpu variables
other then curproc.
2001-01-10 04:43:51 +00:00
mjacob
03aad0d868 The alpha architecture is 64 bits, so bus_addr_t && bus_size_t should really
be 64 bits wide. The largest known current actual physical implementation
is 40 bits, so BUS_SPACE_MAXADDR should reflect this. It also seems to
me that BUS_SPACE_UNRESTRICTED should b ~0UL, not ~0.
2001-01-09 18:17:48 +00:00
obrien
50c1c6f1ac Put VCS ids in a consistent place and form. 2001-01-08 06:24:08 +00:00
obrien
464d16ce94 Remove seconds types we don't use that came in thru the NetBSD heiratage. 2001-01-08 06:17:11 +00:00
jake
d20b7bdad1 Implement accessors for per-cpu variables which don't depend on the
symbols in globals.s.

	PCPU_GET(name) returns the value of the per-cpu variable
	PCPU_PTR(name) returns a pointer to the per-cpu variable
	PCPU_SET(name, val) sets the value of the per-cpu variable

In general these are not yet used, compatibility macros remain.

Unifdef SMP struct globaldata, this makes variables such as cpuid
available for UP as well.

Rebuilding modules is probably a good idea, but I believe old
modules will still work, as most of the old infrastructure
remains.
2001-01-06 19:55:42 +00:00
obrien
65921c45f6 Sort some of the _BSD_* types. 2001-01-01 22:26:56 +00:00
mjacob
45232b4094 Add a dopey makefile to do the tags dance, which is probably not perfect
but is better than nothing by a good deal.
2000-12-31 23:26:34 +00:00
obrien
99909223fe Move all VCS ids to a consistent location. 2000-12-28 18:21:32 +00:00
obrien
3bc5b00850 Add multiple inclusion protection.
PR:		23902
Submitted by:	Christian Weisgerber <naddy@mips.inka.de>
2000-12-28 18:18:23 +00:00
jake
fa7a58ab48 Protect proc.p_pptr and proc.p_children/p_sibling with the
proctree_lock.

linprocfs not locked pending response from informal maintainer.

Reviewed by:	jhb, -smp@
2000-12-23 19:43:10 +00:00
mjacob
ea1bd4d556 Fix ypo in essage about isabling EISA nterrupt ector
(tip 'o the tired cap to Bernd Walter <ticso@cicely5.cicely.de>)
2000-12-15 23:09:05 +00:00
jhb
473acfcf52 Remove the "machine dependent" KTR trace buffer ddb commands. The code was
exactly the same on all platforms.
2000-12-14 23:57:30 +00:00
mjacob
46b93fb788 Add route interrupt method. 2000-12-13 09:07:16 +00:00
obrien
e6a971ff0f Sync with i386/GENERIC rev 1.294 removing "COMPAT_OLDPCI".
This fixed the broken kernel build on the Alpha.
2000-12-13 07:34:47 +00:00
jake
a4ad237eaa - Change the allproc_lock to use a macro, ALLPROC_LOCK(how), instead
of explicit calls to lockmgr.  Also provides macros for the flags
  pased to specify shared, exclusive or release which map to the
  lockmgr flags.  This is so that the use of lockmgr can be easily
  replaced with optimized reader-writer locks.
- Add some locking that I missed the first time.
2000-12-13 00:17:05 +00:00
gallatin
7a735b1d2f enable the proper cascade irq on as1000a
tested by: wilko
2000-12-12 01:39:17 +00:00
gallatin
dd2ab47ed9 fix AS1000/AS1000A support. It turns out the that iobus depends on the
CPU version (apecs:ev4::cia:ev5) and the irq hardware depends on the systype
previously, only ev4 AS1000s and ev5 AS1000a's would have worked.

tested by: wilko (in its -stable form)
noticed by: daniel
2000-12-12 01:36:26 +00:00
gallatin
feb51706ae fix various compiler warnings generated by previous commit 2000-12-12 01:32:36 +00:00
jake
e04de3cdaa - Add code to detect if a system call returns with locks other than Giant
held and panic if so (conditional on witness).
- Change witness_list to return the number of locks held so this is easier.
- Add kern/syscalls.c to the kernel build if witness is defined so that the
  panic message can contain the name of the offending system call.
- Add assertions that Giant and sched_lock are not held when returning from
  a system call, which were missing for alpha and ia64.
2000-12-12 01:14:32 +00:00
mjacob
036f9ff7a3 Store in globaldata our CPU ID#. Provide a lock for panics - only one
CPU can panic at a time.
Obtained from:Andrew Gallatin <gallatin@cs.duke.edu>
2000-12-09 20:52:42 +00:00
msmith
c27f2d3c49 Next phase in the PCI subsystem cleanup.
- Move PCI core code to dev/pci.
 - Split bridge code out into separate modules.
 - Remove the descriptive strings from the bridge drivers.  If you
   want to know what a device is, use pciconf.  Add support for
   broadly identifying devices based on class/subclass, and for
   parsing a preloaded device identification database so that if
   you want to waste the memory, you can identify *anything* we know
   about.
 - Remove machine-dependant code from the core PCI code.  APIC interrupt
   mapping is performed by shadowing the intline register in machine-
   dependant code.
 - Bring interrupt routing support to the Alpha
   (although many platforms don't yet support routing or mapping
   interrupts entirely correctly).  This resulted in spamming
   <sys/bus.h> into more places than it really should have gone.
 - Put sys/dev on the kernel/modules include path.  This avoids
   having to change *all* the pci*.h includes.
2000-12-08 22:11:23 +00:00
gallatin
5b276c5889 Partially re-write T2 chipset support based on Tru64 platform support
files which Compaq open-sourced (with a BSD license).

This commit adds support for proper PCI interrupt mapping and much
better support for swizzling between "standard" isa IRQs and the stdio
irqs used by the t2.  This also adds enabling/disabling/eoi support
for AlphaServer 2100A machines.  The 2100A (or lynx) interrupt
hardware is is very different (and much nicer) than the 2100.
Previously, only AS2100 and AS2000 machines worked.

This commits also lays the groundwork for supporting ExtIO modules.
These modules are essentially a second hose.  This work is left
unfinished pending testing on real hardware.  Wilko tells me that
ExtIO modules are quite rare, and may not actually exist in the wild.

Obtained from: Tru64
Tested by: wilko
2000-12-07 01:06:19 +00:00
marcel
6b960e8fea Minor cleanups:
o  remove unused prototypes,
o  remove unused extern declarations,
o  move prototypes up.
2000-12-05 09:06:41 +00:00
marcel
57f887358a Make osendsig global. It's used by the Linuxulator. 2000-12-05 09:04:25 +00:00
jake
c972e7aad1 Remove the last of the MD netisr code. It is now all MI. Remove
spending, which was unused now that all software interrupts have
their own thread.  Make the legacy schednetisr use an atomic op
for setting bits in the netisr mask.

Reviewed by:	jhb
2000-12-05 00:36:00 +00:00
mjacob
97cf6bcc60 Fix for vanilla PC164 systems to use a slightly different PALcode magic
tweak to enable/disable interrupt sources. Seems to work. It is unclear
how many of the PC164 models actually might needs this, and whether or
not there are other hidden issues.

Obtained from:Bernd Walter <ticso@cicely8.cicely.de>
2000-12-04 17:21:46 +00:00
mjacob
588932041e Comment out debug printfs about enable/disable ints.
Current now appears to work at least fitfully on one Rawhide.
2000-12-04 01:33:44 +00:00
dwmalone
1fe497ac73 More M_ZERO patches.
Submitted by:	josh@zipperup.org
Submitted by:	Robert Drehmel <robd@gmx.net>
Approved by:	mjacob
2000-12-03 20:46:54 +00:00
marcel
5611047489 Don't auto-generate the syscalls. 2000-12-03 01:30:31 +00:00
marcel
ccdb84bb6b Don't auto-generate syscalls. 2000-12-03 01:28:51 +00:00
gallatin
14c37370d1 exec_osf1_imgact() should return -1 for non OSF1/ECOFF binaries, it should
not return ENOEXEC.  This is because image activators should return -1 if they
don't claim an image. They should return ENOEXEC if they do claim it,
but cannot load it due to sime problem with the image.   This bug was
preventing static compilation of the osf/1 module.  I'm surprised it
did not cause more problems.
2000-12-02 04:15:17 +00:00
gallatin
537bde557a Alter isa interrupt behaviour on alpha. Rather than send a non-specific
EOI after the ithread runs, send the EOI when we get the interrupt and
disable the source.  After the ithread is run, the source is renabled.
Also, add isa_handle_fast_intr() which handles fast interrupts by sending
an EOI after the handler is run.

This fixes the chronic missing interrupt problems under heavy NFS load
on my UP1000 and should result in greater stability for alphas which
route all irqs through an isa pic.

Discussed with: jhb, bde (sending non-specific EOIs early was bde's idea)
2000-12-01 22:28:04 +00:00
gallatin
d874e25bc3 acquire/release Giant in vm_page_zero_idle(), like on i386
Discused with: jhb
2000-12-01 18:55:58 +00:00
gallatin
f3693740f3 Convert the pcib_{read,write}_config args from signed to unsigned,
like the args to the config space accessors these functions replaced.

This reduces the likelyhood of overflow when the args are used in
macros on the alpha.  This prevents memory management faults when
probing the pci bus on sables, multias and nonames.

Approved by: dfr
Tested by: Bernd Walter <ticso@cicely8.cicely.de>
2000-12-01 15:27:48 +00:00
alfred
663be26bfa remove unneded sys/ucred.h includes 2000-11-30 18:52:32 +00:00
marcel
75c76bdc6b Don't use p->p_sigstk.ss_flags to keep state of whether the
process is on the alternate stack or not. For compatibility
with sigstack(2) state is being updated if such is needed.

We now determine whether the process is on the alternate
stack by looking at its stack pointer. This allows a process
to siglongjmp from a signal handler on the alternate stack
to the place of the sigsetjmp on the normal stack. When
maintaining state, this would have invalidated the state
information and causing a subsequent signal to be delivered
on the normal stack instead of the alternate stack.

PR: 22286
2000-11-30 05:23:49 +00:00
jlemon
bf6537e7c7 Add 'mpsafe' parameter to callout_init() in MD bits.
Reminded by:  jake
2000-11-26 13:52:17 +00:00
marcel
9e0bf67c89 Don't unregister the ioctl handlers before we verified we
can unload. Doing so leaves the linuxulator in a crippled
state (no ioctl support) when Linux binaries are run at
unload time.

While here, consistently spell ELF in capitals and perform
some minor style improvements.

ELF spelling submitted by: asmodai
2000-11-23 03:21:58 +00:00
jake
0c0be4e826 Protect the following with a lockmgr lock:
allproc
	zombproc
	pidhashtbl
	proc.p_list
	proc.p_hash
	nextpid

Reviewed by:	jhb
Obtained from:	BSD/OS and netbsd
2000-11-22 07:42:04 +00:00
dfr
1b54487574 Protect the bounce page list with a mutex instead of using splhigh(). 2000-11-22 07:16:51 +00:00
markm
92be31d0b5 Add a consistent API to a feature that most modern CPUs have; a fast
counter register in-CPU.

This is to be used as a fast "timer", where linearity is more important
than time, and multiple lines in the linearity caused by multiple CPUs
in an SMP machine is not a problem.

This adds no code whatsoever to the FreeBSD kernel until it is actually
used, and then as a single-instruction inline routine (except for the
80386 and 80486 where it is some more inline code around nanotime(9).

Reviewed by:	bde, kris, jhb
2000-11-21 19:55:21 +00:00
gallatin
fe55c5e105 fix isa DMA on pyxis based machines:
- move the call to cia_init_sgmap() to after we've determined if we're a pyxis
- convert needed splhigh() in cia_sgmap_invalidate_pyxis() to disable_intr()

Previously, any isa DMA on a pyxis based machine would cause a panic
in cia_sgmap_invalidate_pyxis() because the pyxis workaround was never
setup.

- while i'm at it, convert needed splhigh() in cia_swiz_set_hae_mem to
disable_intr()
2000-11-21 03:25:31 +00:00
phk
cbb487db93 Make programs which still #include <machine/{mouse,console}.h> fail
at compiletime, with an explanatory error message.  Previously they
would only get a warning.

These files will be finally removed 2001-01-15
2000-11-20 22:00:25 +00:00
dfr
da6f7f0f11 Convert various calls to splhigh() to disable_intr() since splhigh() is
now a no-op.
2000-11-19 12:28:42 +00:00
dfr
5a46c864c6 We don't need <stddef.h> for offsetof() any more. 2000-11-19 12:26:14 +00:00
jake
f265931038 - Protect the callout wheel with a separate spin mutex, callout_lock.
- Use the mutex in hardclock to ensure no races between it and
  softclock.
- Make softclock be INTR_MPSAFE and provide a flag,
  CALLOUT_MPSAFE, which specifies that a callout handler does not
  need giant.  There is still no way to set this flag when
  regstering a callout.

Reviewed by:	-smp@, jlemon
2000-11-19 06:02:32 +00:00
jake
3a97b3e213 - Split the run queue and sleep queue linkage, so that a process
may block on a mutex while on the sleep queue without corrupting
it.
- Move dropping of Giant to after the acquire of sched_lock.

Tested by:	John Hay <jhay@icomtek.csir.co.za>
		jhb
2000-11-17 18:09:18 +00:00
jhb
c0bba69cbe Don't release and acquire Giant in mi_switch(). Instead, release and
acquire Giant as needed in functions that call mi_switch().  The releases
need to be done outside of the sched_lock to avoid potential deadlocks
from trying to acquire Giant while interrupts are disabled.

Submitted by:	witness
2000-11-16 02:16:44 +00:00
gallatin
0ee48b4aca Use the linux_connect() on alpha rather than passing directly through
to our native connect().  This is required to deal with the differences
in the way linux handles connects on non-blocking sockets.

This gets the private beta of the Compaq Linux/alpha JDK working
on FreeBSD/alpha

Approved by: marcel
2000-11-16 01:05:53 +00:00
gallatin
f930ff8390 make the fcntl() flags match what the linux/alpha port uses, not
what linux/i386 uses
2000-11-16 00:58:07 +00:00
jhb
fee8891473 Add the 'witness_spin_check' per-CPU variable. 2000-11-15 21:58:02 +00:00
jhb
9ced7fb074 - Don't acquire/release Giant during an interrupt context for machine
checks, clock interrupts, and device interrupts.
- Assert that Giant is not owned during the main loop of ithd_loop().
2000-11-15 21:56:50 +00:00
jhb
a1bbb80e56 Fix all the interrupt enabled/disabled assertions which were backwards. 2000-11-15 19:45:10 +00:00
jhb
4b3e3264c7 Don't perform an mi_switch() when we release Giant during cpu_exit(). We
are about to call cpu_switch() anyways.

Found by:	witness
2000-11-15 19:44:38 +00:00
jhb
7363cbb416 Enable all interrupts in switch_trampoline after releasing the sched_lock.
This is needed so that kernel threads created before interrupts are
enabled do not run with interrupts disabled once the system is up and
running.
2000-11-15 01:48:49 +00:00
mjacob
363c7c2287 Pick up kernelname for bootinfo structure (if possible), otherwise
from environment.
2000-11-14 08:12:15 +00:00
gallatin
fd17851060 Enable linux thread support on the alpha. The guts of linux_clone was
mainly cut-n-pasted from the i386 port, except for the method of setting
the child's stack which is the only MD part of this function.

I've tested with the example apps shipped with the linux threads source
code (ex1-ex6) and with several binary builds of Mozilla.
2000-11-10 23:04:31 +00:00
gallatin
c03313d48c Simplify and correct OSF/1 signal handling.
- No signal translation is needed.  Our signals match the OSF/1 signals
- an OSF/1 sigset_t is 64 bits.  Make certain to use all 64-bits of it.
  We'd previously only used the lower 32 bits.   This was mostly harmless
  as I don't know of an OSF/1 apps which use any signals > 31.  However,
  the alpha Linux ABI uses the osf/1 signal routines and threaded linux
  apps tyically use signals 32 and 33 to comminicate with the manager
  thread, so it is important we preserve the upper 32-bits.

Reviewed by: marcel (at least in principal)
2000-11-10 23:00:54 +00:00
mjacob
82e691e492 Fix typo in END macro (END'ed enable twice)
PR:		22713
Submitted by:	Bernd Walter <ticso@cicely5.cicely.de>
2000-11-09 17:01:21 +00:00
marcel
1a7266b24d Make MINSIGSTKSZ machine dependent, and have the sigaltstack
syscall compare against a variable sv_minsigstksz in struct
sysentvec as to properly take the size of the machine- and
ABI dependent struct sigframe into account.

The SVR4 and iBCS2 modules continue to have a minsigstksz of
8192 to preserve behavior. The real values (if different) are
not known at this time. Other ABI modules use the real
values.

The native MINSIGSTKSZ is now defined as follows:

Arch		MINSIGSTKSZ
----		-----------
alpha		    4096
i386		    2048
ia64		   12288

Reviewed by: mjacob
Suggested by: bde
2000-11-09 08:25:48 +00:00
gallatin
a9f33fadaf back out 1.66 -- the Elfxx_Brandinfo compat_3_brand field doesn't exist
in -current
2000-11-09 01:53:05 +00:00
mjacob
5c912a2091 Clean this is up a bit for multiple MIDs... We can figure out which MID
for an interrupt to enable/disable from the vector (and GID too, if we
had multiple GIDs)- so, stupidly for now, search for the right mcpcia's
softc so we have the right base address for the bridge CSR to apply
IRQ bit-twiddle's to. Alas- this doesn't yet allow us to run, but it's
the right direction.
2000-11-08 18:48:21 +00:00
asmodai
97f7cec096 Fix CMSG and ALIGN macro usage.
Previously we had to include <machine/param.h> or <sys/param.h> bogusly
due to the fact that <sys/socket.h> CMSG macros needed the ALIGN macro,
which was defined in param.h.  However, including param.h was a disaster
for namespace pollution.
This solution, as contributed by shin a while ago, fixes it elegantly
by wrapping the definitions around some namespace pollution preventer
definitions.
This patch was long overdue.
This should allow any network programmer to use <sys/socket.h> as
before.

PR:		19971, 20530
Submitted by:	Martin Kaeske <MartinKaeske@lausitz.net>
		Mark Andrews <Mark.Andrews@nominum.com>
Patch submitted by:	shin
Reviewed by:	bde
2000-11-08 16:59:25 +00:00
mjacob
d0b11154ff (KTR debugging) Say when we're disabling a vector. 2000-11-07 22:29:21 +00:00
obrien
b10ac36738 Sync with i386's GENERIC rev 1.287 (Minor ordering changes to make more
sections strictly alphabetical.)
2000-11-07 22:09:33 +00:00
obrien
c93908d247 Sync with i386/conf/GENERIC rev 1.288 (add comments for some ISA devices). 2000-11-07 22:07:07 +00:00
wpaul
fc831555eb The vx driver no longer needs the PCI compat shims. Also should now
work on the alpha (at least the PCI part should).
2000-11-07 00:58:35 +00:00
obrien
e8e876209c Fix generated include path.
Approved by:	JKH
2000-11-04 07:21:37 +00:00
obrien
b01bea2a94 Fix the Elf64 branding initialization. 2000-11-04 05:04:47 +00:00
obrien
0dc991a495 Sort. 2000-11-02 04:13:51 +00:00
gallatin
cf4f3816fd Support for the linux ipc syscalls on the alpha, where each one has
its own syscall rather than going through a demux function like
linux_ipc() on i386
2000-11-01 23:17:31 +00:00
gallatin
b8fdbf65c5 use DUMMY macro and support from linux_util.h 2000-11-01 23:13:49 +00:00
gallatin
1174b5d169 Move the linux abi's alpha md files over to using David's build-time
syscall generation method
2000-11-01 23:07:25 +00:00
gallatin
1f8368b377 fix linux_termio and linux_termios structs on alpha. alpha differences
are in the termios struct (probably because linux wants to be compatible
with the osf/1 termios struct), not the termio struct.
2000-11-01 22:36:41 +00:00
jhb
af87892726 Pass in the new-bus flags to alpha_setup_intr(). 2000-11-01 18:40:42 +00:00
jhb
9b0a561703 - Modify alpha_setup_intr() to take interrupt handler flags as an additional
argument.  These flags include INTR_FAST, INTR_MPSAFE, etc.
- Properly handle INTR_EXCL when it is passed in to allow an interrupt
  handler to claim exclusive ownership of an interrupt thread.
- Add support for psuedo-fast interrupts on the alpha.  For fast interrupts,
  we don't allocate an interrupt thread; instead, during dispatching of an
  interrupt, we run the handler directly instead of scheduling the thread
  to run.  Note that the handler is currently run without Giant and must be
  MP safe.  The only fast handler currently is for the sio driver.

Requested by:	dfr
2000-11-01 18:40:02 +00:00
obrien
105fcddd7f Apply style(9). 2000-11-01 16:38:40 +00:00
obrien
209e75ec40 Minimal set of diffs from the i386 bits to the AlphaLinux.
(based on a patch to sys/i386/linux/linux_dummy.c by gallatin)
2000-11-01 16:34:16 +00:00
obrien
b713b061ae Need to dummy-out rt_sigreturn.
submitted by:	gallatin
2000-11-01 08:52:24 +00:00
obrien
7dc6562539 Need to include sys/proc.h. 2000-11-01 08:49:48 +00:00
obrien
a5064d91c4 I don't know why this used to compile for me, but now struct
linux_sigcontext seems to have changed and some members are gone.
2000-11-01 08:48:53 +00:00