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History log of /src/sys/arch/sun68k/include
RevisionDateAuthorComments
 1.3 14-Jan-2024  thorpej Merge common sun68k types defns into <sun68k/types.h>.
 1.2 26-Nov-2002  lukem Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.
 1.1 27-Jun-2001  fredette branches: 1.1.8;
Added a Makefile to install sun68k common headers.
 1.1.8.2 11-Dec-2002  thorpej Sync with HEAD.
 1.1.8.1 27-Jun-2001  thorpej file Makefile was added on branch nathanw_sa on 2002-12-11 06:12:35 +0000
 1.10 01-Jul-2008  tsutsui Split device_t/softc with misc cosmetic changes.
 1.9 28-Apr-2008  martin branches: 1.9.2; 1.9.4;
Remove clause 3 and 4 from TNF licenses
 1.8 30-Sep-2006  tsutsui branches: 1.8.52; 1.8.54; 1.8.56;
Move declarations of mainbus_dma_tag and mainbus_space_tag
to <sun68k/autoconf.h>.
 1.7 11-Dec-2005  christos branches: 1.7.20; 1.7.22;
merge ktrace-lwp.
 1.6 26-Aug-2005  drochner s/locdesc_t/int/g
 1.5 30-Jun-2005  drochner branches: 1.5.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes
 1.4 22-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.3 14-Dec-2004  chs branches: 1.3.2;
use the generated macros in locators.h rather than hard-coded numbers
to index the cf_loc[] array. reviewed by allen briggs.
 1.2 27-Jun-2001  fredette branches: 1.2.8; 1.2.24;
Now give at least the appearance of having bus-specific
attach args. In reality everything is still one structure,
now called mainbus_attach_args, and a series of macros
creates the illusion.
 1.1 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.2.24.3 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.2.24.2 24-Jan-2005  skrll Sync with HEAD.
 1.2.24.1 18-Dec-2004  skrll Sync with HEAD.
 1.2.8.2 27-Jun-2001  fredette Now give at least the appearance of having bus-specific
attach args. In reality everything is still one structure,
now called mainbus_attach_args, and a series of macros
creates the illusion.
 1.2.8.1 27-Jun-2001  fredette file autoconf.h was added on branch nathanw_sa on 2001-06-27 02:53:08 +0000
 1.3.2.1 29-Apr-2005  kent sync with -current
 1.5.2.2 30-Dec-2006  yamt sync with head.
 1.5.2.1 21-Jun-2006  yamt sync with head.
 1.7.22.1 06-Oct-2006  tsutsui Sync files of recent sun3 and sun68k merge and intersil7170(4) changes
with HEAD to build sun3 kernel on this branch.
 1.7.20.1 18-Nov-2006  ad Sync with head.
 1.8.56.2 04-May-2009  yamt sync with head.
 1.8.56.1 16-May-2008  yamt sync with head.
 1.8.54.1 18-May-2008  yamt sync with head.
 1.8.52.2 02-Jul-2008  mjf Sync with HEAD.
 1.8.52.1 02-Jun-2008  mjf Sync with HEAD.
 1.9.4.1 03-Jul-2008  simonb Sync with head.
 1.9.2.1 18-Sep-2008  wrstuden Sync with wrstuden-revivesa-base-2.
 1.19 23-Sep-2019  skrll Provide PRIxBUSADDR, PRIxBUSSIZE, PRIuBUSSIZE, and PRIxBSH for all arches
to follow arm and (generic) mips.

Reviewed by christos.
 1.18 12-Jul-2011  mrg branches: 1.18.54;
mark bus functions as static inline, not just plain inline.
 1.17 01-Jul-2008  tsutsui - avoid extra offset calculation in region/multi ops
- fix swapped dist/src in copy_region ops
 1.16 28-Apr-2008  martin branches: 1.16.2; 1.16.4;
Remove clause 3 and 4 from TNF licenses
 1.15 04-Mar-2007  christos branches: 1.15.40; 1.15.42; 1.15.44;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.14 21-Feb-2007  mrg add a pair of new bus_dma(9) functions:
int _bus_dmatag_subregion(bus_dma_tag_t tag,
bus_addr_t min_addr,
bus_addr_t max_addr,
bus_dma_tag_t *newtag,
int flags)
void _bus_dmatag_destroy(bus_dma_tag_t tag)

that allow a (normally broken/limited) device to restrict the bus address
range it can talk to. this is used by bce(4) to limit DMA addresses to
1GB range, the maximum the chip can address.

all this is from Yorick Hardy <yhardy@uj.ac.za> with input from several
people on tech-kern.

XXX: bus_dma(9) needs an update still.
 1.13 03-Oct-2006  tsutsui branches: 1.13.4;
- change find_prom_map() to take paddr_t and return vaddr_t rather than
bus_space_handle_t since bus space handle without bus space tag looks weird
- replace old sun3 obio_find_mapping() with new common find_prom_map()
- add bus_space_vaddr(), from hp300
 1.12 01-Oct-2006  tsutsui First attempt at bus_space(9) support for sun3 with common sun68k/bus.c:
- make sun3 port use common sun68k files as much as possible
- add temporary options _SUN2_ in std.sun2 until sun3 can share all
sun68k files (autoconf.c and isr.c are not yet)
- move sun68kvme declaration temporary as well from files.sun68k to files.sun2
- rename and move sun68k_find_prom_map() function to MD sources since it
can't be shared with sun3
- add bus tag members to struct confargs and initilize them where appropriate

XXX1: MD bus_dma(9) backends are not implemented (yet).
XXX2: more code (obio etc.) should be shared among sun3, sun3x and sun2.
 1.11 16-Feb-2006  perry branches: 1.11.14; 1.11.16;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.
 1.10 24-Dec-2005  perry branches: 1.10.2; 1.10.4; 1.10.6;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile
 1.9 11-Dec-2005  christos merge ktrace-lwp.
 1.8 09-Mar-2005  matt branches: 1.8.4;
Add a dm_maxsegsz public member to bus_dmamap_t. This allows a user of the API
to select the maximum segment size for each bus_dmamap_load (up to the maxsegsz
supplied to bus_dmamap_create). dm_maxsegsz is reset to the value supplied to
bus_dmamap_create when the dmamap is unloaded.
 1.7 22-Jan-2005  chs branches: 1.7.2;
de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.6 21-Sep-2003  cl branches: 1.6.8;
make compile
 1.5 15-Jun-2003  fvdl branches: 1.5.2;
Handle 64bit DMA addresses on PCI for platforms that can (currently only
enabled on amd64). Add a dmat64 field to various PCI attach structures,
and pass it down where needed. Implement a simple new function called
pci_dma64_available(pa) to test if 64bit DMA addresses may be used.
This returns 1 iff _PCI_HAVE_DMA64 is defined in <machine/pci_machdep.h>,
and there is more than 4G of memory.
 1.4 28-Jan-2003  kent Introduce BUS_DMA_NOCACHE, and bus_dmamem_map() of i386 supports it.
 1.3 30-Nov-2001  fredette Implement bus_space_mmap.
 1.2 19-Jul-2001  thorpej branches: 1.2.6;
Add BUS_DMA_READ and BUS_DMA_WRITE flags, that hint the back-end
at dmamap load time that the mapping will be used for a unidirectional
transfer of the specified direction.
 1.1 14-Jun-2001  fredette branches: 1.1.2;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.2.2 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.1.2.1 03-Aug-2001  lukem update to -current
 1.2.6.2 08-Jan-2002  nathanw Catch up to -current.
 1.2.6.1 19-Jul-2001  nathanw file bus.h was added on branch nathanw_sa on 2002-01-08 00:28:21 +0000
 1.5.2.5 01-Apr-2005  skrll Sync with HEAD.
 1.5.2.4 24-Jan-2005  skrll Sync with HEAD.
 1.5.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.5.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.5.2.1 03-Aug-2004  skrll Sync with HEAD
 1.6.8.1 29-Apr-2005  kent sync with -current
 1.7.2.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.8.4.4 03-Sep-2007  yamt sync with head.
 1.8.4.3 26-Feb-2007  yamt sync with head.
 1.8.4.2 30-Dec-2006  yamt sync with head.
 1.8.4.1 21-Jun-2006  yamt sync with head.
 1.10.6.1 22-Apr-2006  simonb Sync with head.
 1.10.4.1 09-Sep-2006  rpaulo sync with head
 1.10.2.1 18-Feb-2006  yamt sync with head.
 1.11.16.1 06-Oct-2006  tsutsui Sync files of recent sun3 and sun68k merge and intersil7170(4) changes
with HEAD to build sun3 kernel on this branch.
 1.11.14.1 18-Nov-2006  ad Sync with head.
 1.13.4.2 12-Mar-2007  rmind Sync with HEAD.
 1.13.4.1 27-Feb-2007  yamt - sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.
 1.15.44.2 04-May-2009  yamt sync with head.
 1.15.44.1 16-May-2008  yamt sync with head.
 1.15.42.1 18-May-2008  yamt sync with head.
 1.15.40.2 02-Jul-2008  mjf Sync with HEAD.
 1.15.40.1 02-Jun-2008  mjf Sync with HEAD.
 1.16.4.1 03-Jul-2008  simonb Sync with head.
 1.16.2.1 18-Sep-2008  wrstuden Sync with wrstuden-revivesa-base-2.
 1.18.54.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.28 20-Jan-2024  thorpej Largely unify the <machine/cpu.h> headers on the m68k platforms.
 1.27 19-Jan-2024  thorpej Consistently use "intr_depth" as the name of the interrupt depth counter
on m68k platforms.
 1.26 24-Nov-2019  ad Correction to previous.
 1.25 23-Nov-2019  ad cpu_need_resched():

- Remove all code that should be MI, leaving the bare minimum under arch/.
- Make the required actions very explicit.
- Pass in LWP pointer for convenience.
- When a trap is required on another CPU, have the IPI set it locally.
- Expunge cpu_did_resched().
 1.24 23-Aug-2018  msaitoh Remove inclusion of old m68k/sysctl.h
 1.23 19-Oct-2013  christos branches: 1.23.28; 1.23.30;
make cpu_need_resched() macros consistent; __USE flags
 1.22 22-Dec-2010  matt branches: 1.22.8; 1.22.18; 1.22.22;
Collect cpu_info and friends and move to m68k/include/cpu.h
Add a define __HAVE_CPU_DATA_FIRST which means that cpu_data is the first
member in struct cpu_info.
 1.21 21-Oct-2009  rmind branches: 1.21.4;
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>.
 1.20 26-Jan-2008  tsutsui branches: 1.20.10;
Also account idepth in clock interrupt handlers
(which are registered directly by isr_add_custom())
and use the idepth value for CLKF_INTR().
 1.19 17-Oct-2007  garbled branches: 1.19.2;
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.
 1.18 04-Aug-2007  ad branches: 1.18.2;
Add ci_cpuid where it's missing.
 1.17 21-May-2007  tsutsui branches: 1.17.2; 1.17.4; 1.17.8;
Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.
 1.16 21-May-2007  tsutsui Make netintr() static since it's referred only in sun68k/isr.c.
 1.15 20-May-2007  mhitch Add missing call to lwp_startup() in lwp_trampoline() (which was renamed
from proc_trampoline to match the other ports).

A DIAGNOSTIC kernel will now boot and run. LOCKDEBUG still doesn't work yet.
Also, my amiga no longer loses time.
 1.14 18-May-2007  tsutsui Adapt sun68k ports to yamt-idlelwp.
Tested on TME (sun2 and sun3) and 3/80 (sun3x).
 1.13 16-Feb-2007  ad branches: 1.13.6; 1.13.8; 1.13.14;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.12 09-Feb-2007  ad Merge newlock2 to head.
 1.11 05-Oct-2006  tsutsui Minor cleanups before isr.c merge with sun3:
- include <m68k/cpu.h> rather than <m68k/m68k.h> in <sun68k/cpu.h>
- wrap M68K_VAC definition with #ifndef _SUN3X_ in <sun68k/cpu.h>
- move setsoftnet() macro from <sun68k/cpu.h> to <sun68k/intr.h>
- move declarations for isr_soft_request() and isr_soft_clear() from
sun2/include/intr.h to <sun68k/intr.h>
- remove extern keyword from function declarations
 1.10 11-Dec-2005  christos branches: 1.10.20; 1.10.22;
merge ktrace-lwp.
 1.9 22-Jan-2005  chs branches: 1.9.8;
de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.8 22-Sep-2004  yamt branches: 1.8.4;
move some per-cpu data definitions to MI place so that they can be modified
without touching all ports. discussed on tech-kern@.
 1.7 04-Jan-2004  jdolecek Rearrange process exit path to avoid need to free resources from different
process context ('reaper').

From within the exiting process context:
* deactivate pmap and free vmspace while we can still block
* introduce MD cpu_lwp_free() - this cleans all MD-specific context (such
as FPU state), and is the last potentially blocking operation;
all of cpu_wait(), and most of cpu_exit(), is now folded into cpu_lwp_free()
* process is now immediatelly marked as zombie and made available for pickup
by parent; the remaining last lwp continues the exit as fully detached
* MI (rather than MD) code bumps uvmexp.swtch, cpu_exit() is now same
for both 'process' and 'lwp' exit

uvm_lwp_exit() is modified to never block; the u-area memory is now
always just linked to the list of available u-areas. Introduce (blocking)
uvm_uarea_drain(), which is called to release the excessive u-area memory;
this is called by parent within wait4(), or by pagedaemon on memory shortage.
uvm_uarea_free() is now private function within uvm_glue.c.

MD process/lwp exit code now always calls lwp_exit2() immediatelly after
switching away from the exiting lwp.

g/c now unneeded routines and variables, including the reaper kernel thread
 1.6 21-Sep-2003  cl make compile
 1.5 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.4 18-Jan-2003  thorpej branches: 1.4.2;
Merge the nathanw_sa branch.
 1.3 20-Oct-2002  chs merge the 12 copies of vm_machdep.c on the m68k platforms.
clean up some other stuff along the way, including:
- use m68k/cacheops.*, remove duplicates from cpu.h.
- centralize a few declarations in (all the copies of) cpu.h.
- define M68K_VAC on platforms which have a VAC.
- switch the sun platforms to the (now common) proc_trampoline().
- do the phys_map thang on the sun platforms too, no reason not to.
 1.2 27-Jun-2001  fredette branches: 1.2.8;
Use _KERNEL_OPT.
 1.1 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.2.8.3 11-Nov-2002  nathanw Catch up to -current
 1.2.8.2 08-Dec-2001  thorpej Add a cpu_proc_fork(), called from uvm_proc_fork(), which takes care
of machine-dependent handling a fork() time (this is different from
forking the actual context in an LWP world). #define it away on
platforms which do not need it.

Problem noted by Gregory McGarry.
 1.2.8.1 27-Jun-2001  thorpej file cpu.h was added on branch nathanw_sa on 2001-12-08 08:22:44 +0000
 1.4.2.5 24-Jan-2005  skrll Sync with HEAD.
 1.4.2.4 24-Sep-2004  skrll Sync with HEAD.
 1.4.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.4.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.4.2.1 03-Aug-2004  skrll Sync with HEAD
 1.8.4.1 29-Apr-2005  kent sync with -current
 1.9.8.4 04-Feb-2008  yamt sync with head.
 1.9.8.3 03-Sep-2007  yamt sync with head.
 1.9.8.2 26-Feb-2007  yamt sync with head.
 1.9.8.1 30-Dec-2006  yamt sync with head.
 1.10.22.1 06-Oct-2006  tsutsui Sync files of recent sun3 and sun68k merge and intersil7170(4) changes
with HEAD to build sun3 kernel on this branch.
 1.10.20.2 06-Feb-2007  ad Update m68k pasteware.
 1.10.20.1 18-Nov-2006  ad Sync with head.
 1.13.14.2 03-Oct-2007  garbled Sync with HEAD
 1.13.14.1 22-May-2007  matt Update to HEAD.
 1.13.8.1 11-Jul-2007  mjf Sync with head.
 1.13.6.2 20-Aug-2007  ad Sync with HEAD.
 1.13.6.1 27-May-2007  ad Sync with head.
 1.17.8.1 04-Aug-2007  jmcneill Sync with HEAD.
 1.17.4.1 15-Aug-2007  skrll Sync with HEAD.
 1.17.2.1 07-Aug-2007  matt Sync with HEAD.
 1.18.2.2 23-Mar-2008  matt sync with HEAD
 1.18.2.1 06-Nov-2007  matt sync with HEAD
 1.19.2.1 18-Feb-2008  mjf Sync with HEAD.
 1.20.10.1 11-Mar-2010  yamt sync with head
 1.21.4.1 05-Mar-2011  rmind sync with head
 1.22.22.1 18-May-2014  rmind sync with head
 1.22.18.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.22.8.1 22-May-2014  yamt sync with head.

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

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.23.30.2 08-Apr-2020  martin Merge changes from current as of 20200406
 1.23.30.1 10-Jun-2019  christos Sync with HEAD
 1.23.28.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.4 30-Aug-2011  bouyer Add getlabelusesmbr(), as proposed in
http://mail-index.netbsd.org/tech-userlevel/2011/08/25/msg005404.html
This is used by disk tools such as disklabel(8) to dynamically decide is
the undelyling platform uses a disklabel-in-mbr-partition or not
(instead of using a compile-time list of ports).
getlabelusesmbr() reads the sysctl kern.labelusesmbr, takes its value from the
machdep #define LABELUSESMBR.
For evbmips, make LABELUSESMBR 1 if the platform uses pmon
as bootloader, and 0 (the previous value) otherwise.
 1.3 11-Dec-2005  christos merge ktrace-lwp.
 1.2 22-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.1 14-Jun-2001  fredette branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.32.1 29-Apr-2005  kent sync with -current
 1.1.24.1 24-Jan-2005  skrll Sync with HEAD.
 1.1.8.2 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.8.1 14-Jun-2001  fredette file disklabel.h was added on branch nathanw_sa on 2001-06-14 12:57:12 +0000
 1.5 28-Apr-2008  martin Remove clause 3 and 4 from TNF licenses
 1.4 11-Dec-2005  christos branches: 1.4.74; 1.4.76; 1.4.78;
merge ktrace-lwp.
 1.3 19-Jun-2005  thorpej Move common Sun ID PROM definitions into <dev/sun/idprom.h>.
 1.2 22-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.1 14-Jun-2001  fredette branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.32.1 29-Apr-2005  kent sync with -current
 1.1.24.2 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.1.24.1 24-Jan-2005  skrll Sync with HEAD.
 1.1.8.2 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.8.1 14-Jun-2001  fredette file idprom.h was added on branch nathanw_sa on 2001-06-14 12:57:12 +0000
 1.4.78.1 16-May-2008  yamt sync with head.
 1.4.76.1 18-May-2008  yamt sync with head.
 1.4.74.1 02-Jun-2008  mjf Sync with HEAD.
 1.26 19-Jan-2024  thorpej Add _KERNEL guards around most of the definitions in these files.
 1.25 15-Jan-2024  thorpej G/C __HAVE_LEGACY_INTRCNT from the sun68k platforms.
 1.24 14-Jan-2024  thorpej Switch the sun68k platforms over to the common m68k interrupt dispatch code.
 1.23 14-Jan-2024  thorpej Don't bother with isr_add_custom(). It's just a thin wrapper around
vec_set_entry(), so just use vec_set_entry() directly.
 1.22 12-Jan-2024  thorpej Make getsr() an inline in <m68k/psl.h> and G/C all of the now-redudant
copies.
 1.21 11-Jul-2023  riastradh sun68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).
 1.20 22-Jun-2008  tsutsui branches: 1.20.114;
Make cpu_intr_p() inline.
 1.19 15-Jun-2008  tsutsui Unify splraiseipl(9) implementation among m68k ports as per
suggestion from isaki@ on port-m68k.

For sun68k (sun2, sun3 and sun3x):
- export ipl2psl_table[] and make it uint16_t
- make makeiplcookie(9) inline
- put PSL_S bit into ipl2psl_table[] rather than adding it in makeiplcookie(9)
 1.18 26-Jan-2008  tsutsui branches: 1.18.6; 1.18.8; 1.18.10; 1.18.12; 1.18.14;
Also account idepth in clock interrupt handlers
(which are registered directly by isr_add_custom())
and use the idepth value for CLKF_INTR().
 1.17 04-Dec-2007  tsutsui Adapt sun68k ports to recent interrupt handling changes.

XXX: sun2 (m68010) doesn't have CAS instructions.
 1.16 03-Dec-2007  ad branches: 1.16.2;
Interrupt handling changes, in discussion since February:

- Reduce available SPL levels for hardware devices to none, vm, sched, high.
- Acquire kernel_lock only for interrupts at IPL_VM.
- Implement threaded soft interrupts.
 1.15 07-Nov-2007  ad Merge tty changes from the vmlocking branch.
 1.14 11-Mar-2007  tsutsui branches: 1.14.16; 1.14.18; 1.14.22; 1.14.24;
- use splraise4(), which is defined in psl.h
- use splraise6() rather than spl6() for splzs() and splserial()
 1.13 11-Mar-2007  thorpej - Shrink ipl_cookie_t from 32-bits to 16-bits (large enough to hold
an SR value or an IPL_* constant).
- Take advange of the smaller ipl_cookie_t to shrink kmutex_t from
16 bytes to 8 bytes by overlapping storage where possible.
- Implement a RAS-based _lock_cas() for mc68010 systems (Sun2). See
sun68k/sun68k/isr.c.

Tested on various m68k platforms, but NOT Sun2. In any case, at least
Sun2 compiles now.
 1.12 16-Feb-2007  ad branches: 1.12.2; 1.12.6;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.11 23-Jan-2007  tsutsui Two fixes to avoid lost softintr (probably caused by some race condition):
- make sh_pending in struct softintr_handler volatile
- activate softintr unconditionally in softintr_schedule()
 1.10 21-Dec-2006  yamt merge yamt-splraiseipl branch.

- finish implementing splraiseipl (and makeiplcookie).
http://mail-index.NetBSD.org/tech-kern/2006/07/01/0000.html
- complete workqueue(9) and fix its ipl problem, which is reported
to cause audio skipping.
- fix netbt (at least compilation problems) for some ports.
- fix PR/33218.
 1.9 05-Oct-2006  tsutsui Minor cleanups before isr.c merge with sun3:
- include <m68k/cpu.h> rather than <m68k/m68k.h> in <sun68k/cpu.h>
- wrap M68K_VAC definition with #ifndef _SUN3X_ in <sun68k/cpu.h>
- move setsoftnet() macro from <sun68k/cpu.h> to <sun68k/intr.h>
- move declarations for isr_soft_request() and isr_soft_clear() from
sun2/include/intr.h to <sun68k/intr.h>
- remove extern keyword from function declarations
 1.8 07-Aug-2006  tsutsui branches: 1.8.4; 1.8.6;
Workaround fix for a problem caused after IPL_* macro changes.
Based on a patch from mrg on port-sun2.
 1.7 29-Mar-2006  yamt implement splraiseipl() for sun2 and sun3. reviewed by Izumi Tsutsui.
 1.6 16-Feb-2006  perry branches: 1.6.2; 1.6.4; 1.6.6;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.
 1.5 24-Dec-2005  perry branches: 1.5.2; 1.5.4; 1.5.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.4 11-Dec-2005  christos merge ktrace-lwp.
 1.3 23-Jan-2005  chs branches: 1.3.8;
move spl*() and IPL_* definitions from psl.h to intr.h.
 1.2 22-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.1 14-Jun-2001  fredette branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.32.1 29-Apr-2005  kent sync with -current
 1.1.24.1 24-Jan-2005  skrll Sync with HEAD.
 1.1.8.2 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.8.1 14-Jun-2001  fredette file intr.h was added on branch nathanw_sa on 2001-06-14 12:57:12 +0000
 1.3.8.7 04-Feb-2008  yamt sync with head.
 1.3.8.6 07-Dec-2007  yamt sync with head
 1.3.8.5 15-Nov-2007  yamt sync with head.
 1.3.8.4 03-Sep-2007  yamt sync with head.
 1.3.8.3 26-Feb-2007  yamt sync with head.
 1.3.8.2 30-Dec-2006  yamt sync with head.
 1.3.8.1 21-Jun-2006  yamt sync with head.
 1.5.6.1 22-Apr-2006  simonb Sync with head.
 1.5.4.1 09-Sep-2006  rpaulo sync with head
 1.5.2.1 18-Feb-2006  yamt sync with head.
 1.6.6.1 31-Mar-2006  tron Merge 2006-03-31 NetBSD-current into the "peter-altq" branch.
 1.6.4.1 19-Apr-2006  elad sync with head - hopefully this will work
 1.6.2.2 11-Aug-2006  yamt sync with head
 1.6.2.1 01-Apr-2006  yamt sync with head.
 1.8.6.4 23-Oct-2006  yamt add splsoftserial and splserial.
 1.8.6.3 06-Oct-2006  tsutsui Sync files of recent sun3 and sun68k merge and intersil7170(4) changes
with HEAD to build sun3 kernel on this branch.
 1.8.6.2 19-Sep-2006  yamt implement new api for sun2.
 1.8.6.1 19-Sep-2006  yamt revert old version of splraiseipl().
 1.8.4.3 01-Feb-2007  ad Sync with head.
 1.8.4.2 12-Jan-2007  ad Sync with head.
 1.8.4.1 18-Nov-2006  ad Sync with head.
 1.12.6.2 03-Dec-2007  ad Sync with HEAD.
 1.12.6.1 13-Mar-2007  ad Sync with head.
 1.12.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.14.24.3 18-Feb-2008  mjf Sync with HEAD.
 1.14.24.2 08-Dec-2007  mjf Sync with HEAD.
 1.14.24.1 19-Nov-2007  mjf Sync with HEAD.
 1.14.22.1 13-Nov-2007  bouyer Sync with HEAD
 1.14.18.3 23-Mar-2008  matt sync with HEAD
 1.14.18.2 09-Jan-2008  matt sync with HEAD
 1.14.18.1 08-Nov-2007  matt sync with -HEAD
 1.14.16.2 09-Dec-2007  jmcneill Sync with HEAD.
 1.14.16.1 11-Nov-2007  joerg Sync with HEAD.
 1.16.2.1 08-Dec-2007  ad Sync with head.
 1.18.14.2 27-Jun-2008  simonb Sync with head.
 1.18.14.1 18-Jun-2008  simonb Sync with head.
 1.18.12.1 23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.18.10.1 04-May-2009  yamt sync with head.
 1.18.8.1 17-Jun-2008  yamt sync with head.
 1.18.6.1 29-Jun-2008  mjf Sync with HEAD.
 1.20.114.1 09-Aug-2023  martin Pull up following revision(s) (requested by maya in ticket #316):

sys/arch/m68k/include/mutex.h: revision 1.13
sys/arch/arm/include/cpu.h: revision 1.125
sys/arch/sun68k/include/intr.h: revision 1.21
sys/arch/arm/include/mutex.h: revision 1.28
sys/sys/rwlock.h: revision 1.18
sys/arch/powerpc/include/mutex.h: revision 1.7
sys/arch/arm/include/mutex.h: revision 1.29
sys/arch/powerpc/include/mutex.h: revision 1.8
sys/uvm/uvm_param.h: revision 1.42
sys/sys/ksem.h: revision 1.16
sys/arch/x86/include/mutex.h: revision 1.10
sys/sys/proc.h: revision 1.372
sys/sys/ksem.h: revision 1.17
sys/arch/ia64/include/mutex.h: revision 1.8
sys/arch/evbarm/include/intr.h: revision 1.29
sys/sys/lua.h: revision 1.9
sys/arch/next68k/include/intr.h: revision 1.23
sys/arch/ia64/include/mutex.h: revision 1.9
sys/arch/hp300/include/intr.h: revision 1.35
sys/arch/hp300/include/intr.h: revision 1.36
sys/arch/sparc/include/cpu.h: revision 1.111
sys/arch/hppa/include/mutex.h: revision 1.16
sys/arch/vax/include/intr.h: revision 1.31
sys/arch/hppa/include/mutex.h: revision 1.17
sys/arch/news68k/include/intr.h: revision 1.28
sys/arch/hppa/include/mutex.h: revision 1.18
sys/arch/hppa/include/intr.h: revision 1.3
sys/arch/hppa/include/mutex.h: revision 1.19
sys/arch/hppa/include/intr.h: revision 1.4
sys/sys/sched.h: revision 1.92
sys/opencrypto/cryptodev.h: revision 1.51
sys/arch/vax/include/mutex.h: revision 1.20
sys/arch/sparc64/include/mutex.h: revision 1.10
sys/arch/ia64/include/sapicvar.h: revision 1.2
sys/arch/riscv/include/mutex.h: revision 1.5
sys/arch/amiga/dev/grfabs_cc.c: revision 1.39
sys/external/bsd/drm2/include/linux/idr.h: revision 1.11
sys/arch/riscv/include/mutex.h: revision 1.6
sys/ddb/files.ddb: revision 1.16
sys/arch/mac68k/include/intr.h: revision 1.32
share/man/man4/ddb.4: revision 1.203
sys/ddb/db_command.c: revision 1.183
sys/arch/mips/include/mutex.h: revision 1.10
sys/ddb/db_command.c: revision 1.184
sys/arch/x68k/include/intr.h: revision 1.22
sys/arch/sparc/include/psl.h: revision 1.51
sys/arch/or1k/include/mutex.h: revision 1.4
sys/arch/mips/include/mutex.h: revision 1.11
sys/arch/arm/xscale/pxa2x0_intr.h: revision 1.16
sys/arch/sparc64/include/cpu.h: revision 1.134
sys/arch/sparc/include/psl.h: revision 1.52
sys/arch/or1k/include/mutex.h: revision 1.5
sys/arch/mvme68k/include/intr.h: revision 1.22
sys/arch/luna68k/include/intr.h: revision 1.16
external/cddl/osnet/sys/sys/kcondvar.h: revision 1.6
sys/arch/sparc/include/mutex.h: revision 1.12
sys/arch/sparc/include/mutex.h: revision 1.13
sys/arch/usermode/include/mutex.h: revision 1.5
sys/arch/usermode/include/mutex.h: revision 1.6
sys/kern/kern_core.c: revision 1.38
usr.sbin/crash/Makefile: revision 1.49
sys/arch/amiga/include/intr.h: revision 1.23
sys/arch/alpha/include/mutex.h: revision 1.12
sys/arch/alpha/include/mutex.h: revision 1.13
sys/arch/evbarm/lubbock/sacc_obio.c: revision 1.16
sys/ddb/ddb.h: revision 1.6
sys/arch/sparc64/include/mutex.h: revision 1.8
sys/arch/sh3/include/mutex.h: revision 1.12
sys/arch/evbarm/lubbock/sacc_obio.c: revision 1.17
sys/ddb/db_syncobj.c: revision 1.1
sys/arch/vax/include/mutex.h: revision 1.18
sys/arch/sparc64/include/psl.h: revision 1.63
sys/arch/sparc64/include/mutex.h: revision 1.9
sys/arch/sh3/include/mutex.h: revision 1.13
sys/arch/evbarm/lubbock/obio.c: revision 1.13
sys/arch/atari/include/intr.h: revision 1.23
sys/ddb/db_syncobj.c: revision 1.2
sys/arch/vax/include/mutex.h: revision 1.19
sys/arch/evbarm/g42xxeb/obio.c: revision 1.14
sys/arch/evbarm/g42xxeb/obio.c: revision 1.15
sys/arch/cesfic/include/intr.h: revision 1.14
sys/ddb/db_syncobj.h: revision 1.1
sys/arch/x86/include/cpu.h: revision 1.134
sys/arch/evbarm/g42xxeb/obio.c: revision 1.16
sys/arch/cesfic/include/intr.h: revision 1.15
sys/arch/arm/xscale/pxa2x0_intr.c: revision 1.26
sys/sys/cpu_data.h: revision 1.54
sys/arch/m68k/include/mutex.h: revision 1.12
sys/arch/ia64/acpi/madt.c: revision 1.6

sys/rwlock.h: Make this more self-contained for bool.

machine/mutex.h: Sprinkle includes so this can be used by crash(8).

ddb: New `show all tstiles' command.
Shows who's waiting for which locks and what the owner is up to.

Include psl.h for ipl_cookie_t if __MUTEX_PRIVATE

sys: Rip <sys/resourcevar.h> out of <uvm/uvm_param.h>.

And thus out of <sys/param.h>, which is exceedingly overused and
fragile and delenda est.

Should fix (some) issues with the recent inclusion of machine/lock.h
in various machine/mutex.h files.

arm/mutex.h: Need machine/intr.h, machine/lock.h.

For ipl_cookie_t and __cpu_simple_lock_t.
evbarm/intr.h: Define ipl_cookie_t before including ARM_INTR_IMPL.

Otherwise arm/mutex.h doesn't work, due to a cyclic dependency which
should really be fixed.
opencrypto/cryptodev.h: Fix includes.
- Move sys/condvar.h under #ifdef _KERNEL.
- Add some other necessary includes and forward declarations.
- Sort.

hp300/intr.h: Fix missing includes.
linux/idr.h: Need <sys/mutex.h> for kmutex_t.
amiga/intr.h: Don't define spl*() functions if !_KERNEL.

This is used by crash(8) now, and what's important is ipl_cookie_t.
cesfic/intr.h: Expose ipl_cookie_t to userland for crash(8).
cesfic/intr.h: Expose ipl_cookie_t to userland only with _KMEMUSER.

Probably not necessary but let's be a little more cautious about
this.

atari/intr.h: Expose ipl_cookie_t with _KMEMUSER for crash(8).

arm/cpu.h: Need sys/param.h for COHERENCY_UNIT.

Nix machine/param.h -- not meant to be used directly, pulled in by
sys/param.h.

Move the definition of ipl_cookie_t out of the kernel-only sections,
some _KMEMUSER applications need it.

ddb: Cast pointer to uintptr_t first before db_expr_t.

hppa/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

luna68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

mvme68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

news68k/intr.h: Fix includes. Put some definitions under _KERNEL.

next68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

sys/ksem.h: Hack around fstat(8) abuse of _KERNEL.

sun68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

vax/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

x68k/intr.h: Put functions under _KERNEL so crash(8) can use this.

Make ipl_cookie_t visible for _KMEMUSER userland applications.

fix editor mishap in previous

Explicitly include <sys/mutex.h> for kmutex_t.

Replace kmutex_t * (which may be undefined here) with struct kmutex *,
suggested by Taylor.

hp300/intr.h: Put most of this under #ifdef _KERNEL.
Only ipl_cookie_t really needs to be exposed now, for crash(8).

mac68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).
Make inclusion of sys/intr.h explicit for spl*.

fix hppa and vax builds.

machine/lock.h isn't necessary for __cpu_simple_lock_t, it's in
sys/types.h. avoids cpu_data.h vs sched.h include order issues.

move the hppa ipl_t typedef with the moved usage of it.
machine/mutex.h: Sprinkle sys/types.h, omit machine/lock.h.

Turns out machine/lock.h is not needed for __cpu_simple_lock_t, which
always comes from sys/types.h. And, really, sys/types.h (or at least
sys/stdint.h) is needed for uintN_t and uintptr_t.

ddb: Cast pointer to uintptr_t, then to db_expr_t.
Avoids warnings about conversion between pointer and integer of
different size on some architectures.

re-fix hppa builds.

this file uses __cpu_simple_lock(), not just the underlying type,
so it does need machine/lock.h.

Break cycle by using `struct kmutex *' instead of `kmutex_t *'.
sys/sched.h included sys/mutex.h
which includes sys/intr.h
which includes machine/intr.h
which on cats includes arm/footbridge/footbridge_intr.h
which includes arm/cpu.h
which includes sys/cpu_data.h
which includes sys/sched.h

But there was never any real need for sys/mutex.h in sys/sched.h,
because it only uses pointers to the opaque struct kmutex. Cycle
broken by using `struct kmutex *' instead of pulling in sys/mutex.h
for the definition of kmutex_t.

Side effect: This revealed that sys/cpu_data.h needed sys/intr.h
(which was pulled in accidentally by sys/mutex.h via sys/sched.h) for
SOFTINT_COUNT. Also revealed some other machine/cpu.h header files
were missing includes of sys/mutex.h for kmutex_t.

ia64: Need sys/types.h for u_int, vaddr_t; sys/mutex.h for kmutex_t.

explicitly include no longer implicitly included sys/mutex.h.

arm/xscale: Use sys/bitops.h fls32 - 1 instead of 31 - __builtin_clz.
Sidesteps namespace collision with `#define bits ...' in net/zlib.c.

complete the previous - there were two calls to find_first_bit() to fix.

arm/xscale: Missed a spot with previous find_first_bit commit.

evbarm/g42xxeb: Fix off-by-one in previous.

The original find_first_bit(x) was 31 - __builtin_clz((uint32_t)x),
which is equivalent to fls32(x) - 1, not to fls32(x).

Note that fls32 is 1-based and returns 0 for x=0.
 1.5 06-Aug-2014  joerg Consistently define WARN in a way that passes format string checks, i.e.
always uses the same number of arguments as given in the format string.
 1.4 28-Apr-2008  martin branches: 1.4.44; 1.4.60;
Remove clause 3 and 4 from TNF licenses
 1.3 25-Jan-2006  christos branches: 1.3.72; 1.3.74; 1.3.76;
free -> dealloc
unsigned -> size_t for alloc/dealloc
 1.2 31-Oct-2001  thorpej branches: 1.2.2; 1.2.34; 1.2.46;
Split elf32 vs. elf64 handling in loadfile(), including support for
each separately and explicitly. BOOT_ELF is now BOOT_ELF32 and
BOOT_ELF64, and ELFSIZE should no longer be defined in loadfile_machdep.h.
 1.1 14-Jun-2001  fredette branches: 1.1.2; 1.1.6;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.6.1 12-Nov-2001  thorpej Sync the thorpej-mips-cache branch with -current.
 1.1.2.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.2.46.1 01-Feb-2006  yamt sync with head.
 1.2.34.1 21-Jun-2006  yamt sync with head.
 1.2.2.2 31-Oct-2001  thorpej Split elf32 vs. elf64 handling in loadfile(), including support for
each separately and explicitly. BOOT_ELF is now BOOT_ELF32 and
BOOT_ELF64, and ELFSIZE should no longer be defined in loadfile_machdep.h.
 1.2.2.1 31-Oct-2001  thorpej file loadfile_machdep.h was added on branch nathanw_sa on 2001-10-31 17:20:50 +0000
 1.3.76.1 16-May-2008  yamt sync with head.
 1.3.74.1 18-May-2008  yamt sync with head.
 1.3.72.1 02-Jun-2008  mjf Sync with HEAD.
 1.4.60.1 10-Aug-2014  tls Rebase.
 1.4.44.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.4 17-Sep-2006  tsutsui Make sun68k/stand build without installed ${DESTDIR} files.

Currently "machine" symlink points sys/arch/sun68k/include,
but this means some <machine/foo.h> files are taken from
sys/arch/sun68k/include but others (i.e. files not in sun68k/include)
are taken from ${DESTDIR}/usr/include/machine.

Instead, make "machine" symlink point sys/arch/${MACHINE}/include,
make "sun68k" symlink point sys/arch/sun68k/include (not sys/arch/sun68k),
add sys/arch to include path, and move some files where appropriate.
 1.3 03-Jun-2002  fredette branches: 1.3.22; 1.3.52;
Reverted previous commit. It was meant to fix a problem that
was already fixed by nathanw, had I bothered to check.
 1.2 03-Jun-2002  fredette Now make a machine/ directory with symlinks to a small number
of machine-specific headers. When ${MACHINE} is sun2, this
allows building the sun3 and sun3x parts of libsa, which need
things like <machine/param3.h> and <machine/param3x.h> to be
#includeable.
 1.1 14-Jun-2001  fredette branches: 1.1.2; 1.1.8; 1.1.16;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.16.1 15-Jul-2002  gehenna catch up with -current.
 1.1.8.2 20-Jun-2002  nathanw Catch up to -current.
 1.1.8.1 14-Jun-2001  nathanw file mc68851.h was added on branch nathanw_sa on 2002-06-20 03:41:55 +0000
 1.1.2.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.3.52.1 18-Nov-2006  ad Sync with head.
 1.3.22.1 30-Dec-2006  yamt sync with head.
 1.6 24-Jun-2023  msaitoh Fix typo in comment.
 1.5 28-Apr-2008  martin Remove clause 3 and 4 from TNF licenses
 1.4 11-Dec-2005  christos branches: 1.4.74; 1.4.76; 1.4.78;
merge ktrace-lwp.
 1.3 03-Jun-2005  tsutsui Add const.
 1.2 22-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.1 14-Jun-2001  fredette branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.32.1 29-Apr-2005  kent sync with -current
 1.1.24.2 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.1.24.1 24-Jan-2005  skrll Sync with HEAD.
 1.1.8.2 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.1.8.1 14-Jun-2001  fredette file mon.h was added on branch nathanw_sa on 2001-06-14 12:57:12 +0000
 1.4.78.1 16-May-2008  yamt sync with head.
 1.4.76.1 18-May-2008  yamt sync with head.
 1.4.74.1 02-Jun-2008  mjf Sync with HEAD.
 1.2 09-Feb-2007  ad branches: 1.2.4;
Merge newlock2 to head.
 1.1 22-Dec-2006  ad branches: 1.1.2;
file mutex.h was initially added on branch newlock2.
 1.1.2.1 22-Dec-2006  ad Pull in CPU specific stubs.
 1.2.4.2 26-Feb-2007  yamt sync with head.
 1.2.4.1 09-Feb-2007  yamt file mutex.h was added on branch yamt-lazymbuf on 2007-02-26 09:08:38 +0000
 1.5 11-Dec-2005  christos merge ktrace-lwp.
 1.4 23-Jan-2005  chs move spl*() and IPL_* definitions from psl.h to intr.h.
 1.3 22-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.
 1.2 27-Jun-2001  fredette branches: 1.2.8; 1.2.24; 1.2.32;
Now define splzs() here.
 1.1 14-Jun-2001  fredette Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.
 1.2.32.1 29-Apr-2005  kent sync with -current
 1.2.24.1 24-Jan-2005  skrll Sync with HEAD.
 1.2.8.2 27-Jun-2001  fredette Now define splzs() here.
 1.2.8.1 27-Jun-2001  fredette file psl.h was added on branch nathanw_sa on 2001-06-27 02:51:46 +0000
 1.2 09-Feb-2007  ad branches: 1.2.4;
Merge newlock2 to head.
 1.1 22-Dec-2006  ad branches: 1.1.2;
file rwlock.h was initially added on branch newlock2.
 1.1.2.1 22-Dec-2006  ad Pull in CPU specific stubs.
 1.2.4.2 26-Feb-2007  yamt sync with head.
 1.2.4.1 09-Feb-2007  yamt file rwlock.h was added on branch yamt-lazymbuf on 2007-02-26 09:08:38 +0000
 1.3 15-Jan-2024  thorpej G/C __HAVE_LEGACY_INTRCNT from the sun68k platforms.
 1.2 14-Jan-2024  thorpej Switch the sun68k platforms over to the common m68k interrupt dispatch code.
 1.1 14-Jan-2024  thorpej Merge common sun68k types defns into <sun68k/types.h>.
 1.2 14-Jan-2024  thorpej Switch the sun68k platforms over to the common m68k interrupt dispatch code.
 1.1 13-Jan-2024  thorpej Switch the sun68k platforms over to the common m68k vector table.

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