Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Switch all users (except ia64) of custom machine/ansi.h to common_ansi.h

Deduplicate the code among ports and poll definitions of types
directly from a compiler.

This fixes miscompilation of certain programs that instruct compilers
to generate code for different types. This bug has been detected with
-fshort-wchar in EFI firmware.

Proposed and discussed on a mailing list (twice).

Itanium uses custom !ELF fallback switch, temporarily leave it as it is.

branches: 1.5.18;
Make clock_t unsigned int everywhere.
Ok: matt@, mrg@

branches: 1.4.4; 1.4.6;
support building on arm

branches: 1.3.2; 1.3.12; 1.3.16;
build fixes for netbsd-5 and i386

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Provide PRIxBUSADDR, PRIxBUSSIZE, PRIuBUSSIZE, and PRIxBSH for all arches
to follow arm and (generic) mips.

Reviewed by christos.

branches: 1.4.54;
add bus_addr_t typedef

Fix compilation after bus space changes. They are weak linked to the defaults.

fix build

branches: 1.1.4; 1.1.8;
bus.h is required for build so add some empty file for now.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.6.28;
support building on arm

branches: 1.5.6; 1.5.10;
regen

regen

Regen

branches: 1.2.12; 1.2.16;
Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Fix false sharing problems with cpu_info. Identified with tprof(8).
This was a very nice win in my tests on a 48 CPU box.

- Reorganise cpu_data slightly according to usage.
- Put cpu_onproc into struct cpu_info alongside ci_curlwp (now is ci_onproc).
- On x86, put some items in their own cache lines according to usage, like
the IPI bitmask and ci_want_resched.

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().

Add preliminary KGDB support for NetBSD/usermode, currently only under amd64

branches: 1.10.46; 1.10.48;
Fix /dev/kmem access and make vmstat(1) `work'. Not sure all the results are
indeed valid or correct but at least it shows them without coredumping or
coredumping the kernel.

My fault, forgot that cpu_need_resched() is indeed already declared as a function

Add macro cpu_need_resched

Define astpending flag and the aston() setter

branches: 1.6.2; 1.6.6;
- initialize cpu_info_primary early, before cpu0 attaches
- track idepth in cpu_info struct and use it in cpu_intr_p
- for debug and diagnostic kernels, abort when rebooting
- fill in __cpu_simple_lock_* stubs
- splraise(IPL_HIGH) before calling kernmain
- pmap_extract: only return phys addr if pap is not NULL

Clean up extern mess by adding an API for kernel components to call libc
functions. thunk.c is built with special cflags that makes it compile
against standard system headers instead of kernel ones.

initialize lwp0 l_addr so we can switch back to it

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>.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

branches: 1.1.2; 1.1.6;
Forgot the two header files

Add KGDB definitions for i386

Add preliminary KGDB support for NetBSD/usermode, currently only under amd64

branches: 1.2.62; 1.2.64;
Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.13.28;
support building on arm

branches: 1.12.6; 1.12.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.6.2; 1.6.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

If the host doesn't define LABELUSESMBR, set it to 1

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.18;
Fix enough to get i386 more-or-less compiling. The i386 needs u_long to be
an unsigned long too or uvm will complain.

Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

branches: 1.1.2;
Regen usermode headers

Add preliminary KGDB support for NetBSD/usermode, currently only under amd64

branches: 1.10.2;
Add new mcontext and depends to the usermode generated headerfiles

branches: 1.9.28;
support building on arm

branches: 1.8.6; 1.8.10;
With the recent kmem changes, remove the `unlimited' maximum setting of
NKMEMPAGES from amd64 since it gets us into trouble.

Bump UPAGES effectively bumping per-process (system) stack i.e. the stack on
which traps are taken. When it was 8 it could run out of space on big NFS
stack traces in combination with timer and memory paging.

Add cdefs.h to usermode's genheaders.sh

Bump UPAGES with one more to allow for AST processing. Somehow the space was a
bit tight OR i am checking too regorously on stack space needed.

Update automatically generated headers

disklabel.h: handle __HAVE_OLD_DISKLABEL. while here, I noticed someone changed param.h without updating genheaders.h, so catch up.

branches: 1.2.2; 1.2.6;
make sure USPACE is large enough to hold our struct pcb

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Implement signal forwarding to userland for usermode kernels. Especially
SIGFPE is important since the urkel shouldn't stop when a userland program
devides by zero!

branches: 1.8.2;
spl_intr() is not defined anymore so remove from the header file

Complete rewrite of the signal and spl framework for NetBSD/usermode

Signals are now moved from the sigaltstack ASAP and stacked on a replacement
stack for each processes.

Preemption now works though could be enhanced a bit more

make sure the sigio signal handler runs on the alternate signal stack,
fixes random SIGILLs seen recently

add sigio_intr_establish so more than one driver can register a SIGIO handler

branches: 1.4.2; 1.4.6;
Implement spl level based priority interrupt controller in software

implement splraise/spllower

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Fix compile error. Use const correctly.

more const.

branches: 1.3.12;
- initialize cpu_info_primary early, before cpu0 attaches
- track idepth in cpu_info struct and use it in cpu_intr_p
- for debug and diagnostic kernels, abort when rebooting
- fill in __cpu_simple_lock_* stubs
- splraise(IPL_HIGH) before calling kernmain
- pmap_extract: only return phys addr if pap is not NULL

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

branches: 1.1.4;
Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.

Add md_get_sp() for MI stack frame manipulation. Note that NetBSD/usermode
only works on decending stacks for now!

Fix logic that checks if its the kernel or a userland process that causes the
trap. Signal sending still needs to be addressed.

Remove the need for a siginfo structure in illegal instruction handling.

need to sigaltstack for each lwp

branches: 1.4.2;
Big patch that changes the signal stack usage of urkel significantly.

Formerly, all signals came on the signal stack and the two important ones were
then forwared to either the system call or the pagefault handler. This worked
fine but the signal stack remains that, a stack. When we go multi-process this
stack gets corrupted and out-of-order with all kind of nastyness since a
userland process switch can occure when a system call is called or when a
process gets a page fault.

The new scheme only uses the signal stack as a jumpboard. It swaps states and
then returns from the signal, clearing the stack but instead of returning to
the code it now jumpt to the handler and that handler then returns to the code
when its finished.

branches: 1.3.2;
machdep.c: Cleanup the machine dependent code and set the carry flag on error
out. While here also clean up register printing.

syscall.c: Add debug syscall printing code to track basic syscalls being
taken.

Implement a working(!) syscall! well, it can call a number of syscalls without
dying ;)

Add a machdep protoype header file to coder all prototypes in machdep.c

Add ATAPI passtrough support giving the NetBSD/usermode kernel full control of
an ATAPI device. All ATAPI/SCSI commands are passed trough.

Note that ATAPI/SCSI calls are made in the foreground still. Lengthy calls
will still hug the CPU until completion. Making it asynchronous is in the
pipeline

branches: 1.7.46;
Replace the SDL based genfb driver with a wsdisplay and wskbd driver that
implements the VNC (RFB) protocol.

To enable the VNC server, add 'vnc=640x480,5900' to the kernel command line
(where 640x480 is the desired fb resolution and 5900 is the TCP port).

Screenshot of it here: http://www.netbsd.org/~jmcneill/usermode.tiff

add vaudio(4) audio device driver

first cut at networking support for usermode, doesn't fully work yet but
enough to get an address with dhcp and answer arps

branches: 1.4.2; 1.4.6;
- build thunk code with warnings
- add option SDL which pulls in thunk_sdl code and links the kernel to libSDL
- add an experimental framebuffer driver based on thunk_sdl, enable with:
options SDL
genfb* at mainbus?
wsdisplay* at genfb?
options WS_KERNEL_FG=WSCOL_GREEN
options WSEMUL_VT100
- reserve a major # for wsdisplay
- add thunk_getenv()

add a simple disk driver, pass the path to the disk image on the kernel command line:

soundwave$ ./netbsd /tmp/test.fs
NetBSD/usermode startup
[...]
ld0 at mainbus0: /tmp/test.fs (33554432)
ld0: 32768 KB, 8322 cyl, 64 head, 63 sec, 1 bytes/sect x 33554432 sectors
boot device: ld0
root on ld0a dumps on ld0b

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.3.52;
make sure mcontext is large enough to store the host mcontext; fixes
strange crashes seen in pool_init

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

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.

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

XXX pullup-10

branches: 1.4.26;
Nix now-unused definitions of MUTEX_GIVE/MUTEX_RECEIVE.

branches: 1.3.88;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.14; 1.2.16; 1.2.18;
#ifdef _X86_foo_H -> _ARCH_USERMODE_INCLUDE_foo_H, to match the rest of
the sources.

Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.12.28;
support building on arm

branches: 1.11.6; 1.11.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.5.2;
Big patch that changes the signal stack usage of urkel significantly.

Formerly, all signals came on the signal stack and the two important ones were
then forwared to either the system call or the pagefault handler. This worked
fine but the signal stack remains that, a stack. When we go multi-process this
stack gets corrupted and out-of-order with all kind of nastyness since a
userland process switch can occure when a system call is called or when a
process gets a page fault.

The new scheme only uses the signal stack as a jumpboard. It swaps states and
then returns from the signal, clearing the stack but instead of returning to
the code it now jumpt to the handler and that handler then returns to the code
when its finished.

branches: 1.4.2;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Revamp the NetBSD/usermode pagefault and illegal instruction handing. It now
can handle recursive entry and is a lot more memory tight compared to the old
implementation. Performance wise:

* slightly less number of syscalls/sec possible though could be optimized
* a lot faster context creation / destruction making overall operation faster.

Cleanup stack allocation and freeing. This means the memory leak on lwp
destruction ought to be solved.

Fix logic that checks if its the kernel or a userland process that causes the
trap. Signal sending still needs to be addressed.

Fix typo

branches: 1.13.2;
Big patch that changes the signal stack usage of urkel significantly.

Formerly, all signals came on the signal stack and the two important ones were
then forwared to either the system call or the pagefault handler. This worked
fine but the signal stack remains that, a stack. When we go multi-process this
stack gets corrupted and out-of-order with all kind of nastyness since a
userland process switch can occure when a system call is called or when a
process gets a page fault.

The new scheme only uses the signal stack as a jumpboard. It swaps states and
then returns from the signal, clearing the stack but instead of returning to
the code it now jumpt to the handler and that handler then returns to the code
when its finished.

branches: 1.12.2;
Remove not used variable from the pcb.h

Create a ucontext for the system call to work in; its cloned from the new
pcb's call `userland' ucontext.

pcb->errno to pcb->pcb_errno

Try to preserve errno over traps and on context switches

Revert

Update trapframe and add system call switchframe

Update pcb and trapframe

Update trapframe and pcb

Add trapframe and extent pcb for NetBSD/usermode; both mere dummies since
there are no traps delivered nor a process has ever been started...

Clean up extern mess by adding an API for kernel components to call libc
functions. thunk.c is built with special cflags that makes it compile
against standard system headers instead of kernel ones.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Add preliminary KGDB support for NetBSD/usermode, currently only under amd64

branches: 1.5.52; 1.5.54;
Remove two commented out and unused defines

Start NetBSD/usermode's pmap. Its using a temp file as a physical memory
backup and that should be documented in the code. A physical address is thus a
file offset(!) and a virtual address is a `normal' accesible address.

Still to do: various misc functions and pmap_extract() in special.

Credits also go to Ben Harris for his work on the Acorn26 pmap that followed
the Daemon Book recommendation for systems without real page tables on wich
this implementation is modelled after.

Bring pmap.h to new world order.

branches: 1.2.4; 1.2.6;
Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

support building on arm

branches: 1.1.2; 1.1.12; 1.1.16;
Add missing processor status flag file i forgot to add

Regen usermode headers

branches: 1.13.28;
support building on arm

branches: 1.12.6; 1.12.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.6.2; 1.6.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

add procfs support

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.18;
To make NetBSD/userland to boot on i386 choose some defaults in vmparam.h
since for i386 they are defined in page size constants wich NetBSD/userland
doesn't know yet. Also undefine ptrace's __HAVE_PTRACE_MACHDEP since i386
has that but NetBSD/userland not.

Import work-in-progress NetBSD/usermode port.

Implement own process register capture from userland.

NetBSD/usermode now creates readable and sensible coredumps

branches: 1.3.2;
Add dbreg structure prototype needed for x86_64

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Largely eliminate the MD rwlock.h header file.

This was full of definitions that have been obsolete for over a
decade. The file still remains for __HAVE_RW_STUBS but that's all.
Used only internally in kern_rwlock.c now, not by <sys/rwlock.h>.

branches: 1.3.88;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.14; 1.2.16; 1.2.18;
#ifdef _X86_foo_H -> _ARCH_USERMODE_INCLUDE_foo_H, to match the rest of
the sources.

Import work-in-progress NetBSD/usermode port.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.

Merge isaki-audio2 branch, the overhaul of audio subsystem.
- Interrupt-oriented system rather than thread-oriented.
- Improve stability, quality and performance.
- Split playback and record cleanly. Improve halfduplex support.
- Many bugs are fixed including deadlocks, resource leaks, abuses, etc.
- Simplify audio filter mechanism. The encoding/channels/frequency
conversions are completely handled in the upper layer. So the hard-
ware driver only converts its hardware encoding (if necessary).
- audio_hw_if changes:
- Obsoletes query_encoding and add query_format instead.
- Obsoletes set_params and add set_format instead.
- Remove drain, setfd, mappage.
- The call sequences are changed.
- ioctl AUDIO_GETFD/SETFD, AUDIO_GETCHAN/SETCHAN are obsoleted.
- ioctl AUDIO_{QUERY,GET,SET}FORMAT are introduced.
- cleanup config attributes: au*conv and mulaw.
- All hardware drivers should follow it (I've done as much as possible).

Some file paths are changed:
- dev/audio.c -> dev/audio/audio.c (rewritten)
- dev/audiovar.h -> dev/audio/audiovar.h
- dev/audio_dai.h -> dev/audio/audio_dai.h
- dev/audio_if.h -> dev/audio/audio_if.h
- dev/audiobell.c -> dev/audio/audiobell.c
- dev/audiobellvar.h -> dev/audio/audiobellvar.h
- dev/mulaw.[ch] -> dev/audio/mulaw.[ch] + dev/audio/alaw.c

branches: 1.66.2;
Add headers for support functions for kgdb

branches: 1.65.2;
Enhance the NetBSD/usermode thunk interface

Pretend we already included the <types.h>

Include OUR types.h and not the machine's. A small step to allow for
crosscompilation.

branches: 1.62.16;
Take procfs_machdep.c rev 1.4 one step further and adjust signature of
thunk_getcpuinfo().

branches: 1.61.2; 1.61.16;
Implement signal forwarding to userland for usermode kernels. Especially
SIGFPE is important since the urkel shouldn't stop when a userland program
devides by zero!

branches: 1.60.2;
Add the complement to sigemptyset(), sigfillset()!

Add thunk_close()

Add thunk_madvise() for memory access hints to the host kernel.

support disk images >= 2GB

Get rid of MAP_NOSYSCALLS usage; now this relies on a separate kmod that
you can get here: http://www.netbsd.org/~jmcneill/syscallemu.tar

Rename the debug printf's to use a thunk_ prefix to avoid confusion.

Adjust prototypes.

report rfb pointer events

add a barrier before copyrows(), and add an RRE based fillrect functino,
use it for eraserows and erasecols

support wskbd bell

Use the encoding values of the VNC spec and add a copyrect (not used yet)

Add RFB type flag to indicate what kind of request is waiting

optimize rfb updates by allowing queueing of multiple update messages,
dropping duplicates, and transmitting them in batches

Replace the SDL based genfb driver with a wsdisplay and wskbd driver that
implements the VNC (RFB) protocol.

To enable the VNC server, add 'vnc=640x480,5900' to the kernel command line
(where 640x480 is the desired fb resolution and 5900 is the TCP port).

Screenshot of it here: http://www.netbsd.org/~jmcneill/usermode.tiff

add vaudio(4) audio device driver

first cut at networking support for usermode, doesn't fully work yet but
enough to get an address with dhcp and answer arps

on second thought, set machine and machine_arch both from the host and
override module_machine

set machine_arch to that of the host

Use to the MAP_NOSYSCALLS argument to mmap() to allow for NetBSD/usermode to
execute bog-standard native programs.

Improve usermode timecounter. It's unreasonable to assume that we'll get
100 "SIGALRM" per second with an ITIMER_REAL at 100Hz on a HZ=100 host as
the timer may expire before a pending signal has been delivered.

Instead of setitimer, use timer_create + timer_settime and from our
intr handler use timer_getoverrun to determine how many ticks we have
missed.

implement /proc/cpuinfo

use write instead of putchar putchar putchar putchar putchar ... for console output

implement cpu idle via sigsuspend

make sure to set O_ASYNC on stdin to enable ttycons "interrupts"

add thunk_pollchar

branches: 1.35.2;
Add thunk_sigprocmask()

branches: 1.34.2;
Implement a dprintf_debug() analog to aprint_debug() but printing it to stderr
using vdprintf() to bypass the kernel buffer. It is currently printing only on
the -x boot flag but might get a more specific one since its quite verbose!

Provide thunk fuction to return the host machine's VM_MIN_ADDRESS

Sanitise thunk_makecontext() allowing upto 3 random arguments

Streamline makecontext() calls to really only specify the number of arguments
to prevent side-effects

Implement thunk_sigemptyset()

Add thunk_sigaddset()

implement splraise/spllower

Implement thunk_seterrno()

-thunk_makecontext_trapframe2go(ucontext_t *ucp, void *func, void *trapframe)
+thunk_makecontext_1(ucontext_t *ucp, void *func, void *arg)

Let NetBSD/usermode build & link on a Linux host:
- Need to add options CPU_HOST=i386 or CPU_HOST=amd64 for membar & atomic_ops
- Don't use MAP_* and PROT_* with thunk API since the kernel and host
might not be the same; add THUNK_MAP_* and THUNK_PROT_* and translate them
- Add thunk_posix_memalign
- allocate mem_uvm with thunk_posix_memalign instead of thunk_malloc
- Fix thunk_mmap callers to always pass either THUNK_MAP_PRIVATE or
THUNK_MAP_SHARED
- mkstemp on Linux requires exactly 6 "X" characters at the end of the
template string, so add an X

Get this compiling (but not quite linking yet) on Linux

Revert

-thunk_makecontext_trapframe2go(ucontext_t *ucp, void *func, void *trapframe)
+thunk_makecontext_1(ucontext_t *ucp, void (*func)(void), void *arg)

Create a more general prototype for makecontext() with one variable.

Implement thunk_sigaltstack() so an alternative signal stack can be used

add thunk_tcgetattr and thunk_tcsetattr

Add thunk_makecontext_trapframe2go()

Add a thunk_atexit() so ucontext() ends can be dealt with as they should

- build thunk code with warnings
- add option SDL which pulls in thunk_sdl code and links the kernel to libSDL
- add an experimental framebuffer driver based on thunk_sdl, enable with:
options SDL
genfb* at mainbus?
wsdisplay* at genfb?
options WS_KERNEL_FG=WSCOL_GREEN
options WSEMUL_VT100
- reserve a major # for wsdisplay
- add thunk_getenv()

Implement thunk_malloc() and think_free()

add a wrapper for signal(3)

struct stat also has time_t in it, so we can't use that in the thunk api either

more time_t fixes

unlink pmap backing file immediately after opening it, so we don't leave
a bunch of 128MB turds sitting around in /tmp

more host vs. userkernel time_t fixes

host and userkernel timespec might differ in size (because of time_t) so
instead of thunk_clock_getres() filling in a timespec, use instead
thunk_clock_getres_monotonic() that returns the resolution as a long

Add thunk_munmap() to NetBSD/usermode's thunk

Fix thunk_mkstemp() prototype and add thunk_mprotect()

Add mmap() reachover call in thunk for NetBSD/usermode

Create mkstemp() and sbrk() prototypes to NetBSD/usermode's thunk

- replace the gettimeofday timecounter with one based on CLOCK_MONOTONIC
- use gettimeofday for TODR clock

try to use aio_read/aio_write instead of pread/pwrite

add a simple disk driver, pass the path to the disk image on the kernel command line:

soundwave$ ./netbsd /tmp/test.fs
NetBSD/usermode startup
[...]
ld0 at mainbus0: /tmp/test.fs (33554432)
ld0: 32768 KB, 8322 cyl, 64 head, 63 sec, 1 bytes/sect x 33554432 sectors
boot device: ld0
root on ld0a dumps on ld0b

implement reboot using execv

Clean up extern mess by adding an API for kernel components to call libc
functions. thunk.c is built with special cflags that makes it compile
against standard system headers instead of kernel ones.

branches: 1.1.2; 1.1.6;
Provide hand-doctored redirection of trap.h in preparation for ddb/kgdb

Whitespace: #define<tab>

branches: 1.16.12; 1.16.14;
Make the usermode kernel compile again.

Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

branches: 1.14.2;
Fix compilation errors so NetBSD/usermode compiles under ./build.sh

Implement cpu_lwp_setprivate(). This removes the need for the cpu_switch()
hack.

Programs with TLS work fine now, including gdb!

branches: 1.12.12;
provide __HAVE_COMPAT_NETBSD32 and fix multiple include protection consistently.

branches: 1.11.2; 1.11.4;
expose the kernel types for standalone code.

Hide {p,v}{addr,size}_t and register_t (and a couple more types that
are machine-specific) from userland unless _KERNEL/_KMEMUSER and a
new _KERNTYPES variables is defined. The _KERNTYPES should be fixed
for many subsystems that should not be using it (rump)...

Fix PTHREAD_FOO_INITIALIZER for C++ by not using volatile in the relevant
pthread types in C++ builds, attempt 2.

The problem with attempt 1 was making assumptions of what the MD
__cpu_simple_lock_t (declared volatile) looks like. To get a same type
except non-volatile, we change the MD type to __cpu_simple_lock_nv_t
and typedef __cpu_simple_lock_t as a volatile __cpu_simple_lock_nv_t.
IMO, __cpu_simple_lock_t should not be volatile at all, but changing it
now is too risky.

Fixes at least Rumprun w/ gcc 5.1/5.2. Furthermore, the mpd application
(and possibly others) will no longer require NetBSD-specific patches.

Tested: build.sh for i386, Rumprun for x86_64 w/ gcc 5.2.

Based on the patch from Christos in lib/49989.

branches: 1.8.6; 1.8.24;
Fix /dev/kmem access and make vmstat(1) `work'. Not sure all the results are
indeed valid or correct but at least it shows them without coredumping or
coredumping the kernel.

define __HAVE_OLD_DISKLABEL on i386

branches: 1.6.12; 1.6.16;
Add PRIx{P,V}{ADDR,SIZE}, PRIu{P,V}SIZE, and PRIxREGISTER{,32,64} for all
(except where they will be added via merge). These should be used to print
{p,v}{addr,size}_t and register*_t as appropriate.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.4.2; 1.4.4; 1.4.14;
Now that __HAVE_TIMECOUNTER and __HAVE_GENERIC_TODR are invariants,
remove the conditionals and the code associated with the undef case.

branches: 1.3.2;
Use gettimeofday as timecounter.

branches: 1.2.2;
Fix enough to get i386 more-or-less compiling. The i386 needs u_long to be
an unsigned long too or uvm will complain.

Import work-in-progress NetBSD/usermode port.

branches: 1.2.2; 1.2.6;
Add KGDB definitions for i386

Forgot the two header files

get rid of urkelvisor, and use same MD majors as the host

branches: 1.1.2; 1.1.6;
Add usermode kernel supervisor, can be disabled with 'no options URKELVISOR'

Allow for setting kernel breakpoints in our remote kgdb

Revert to working state

Max kernel address is end of kernel

branches: 1.17.28; 1.17.30;
support building on arm

branches: 1.16.6; 1.16.10;
Fix /dev/kmem access and make vmstat(1) `work'. Not sure all the results are
indeed valid or correct but at least it shows them without coredumping or
coredumping the kernel.

Clarify comment about PAGER_MAP_DEFAULT_SIZE

Bump pager map default size since KVM is not that tight anymore

Rework NetBSD/usermode pmap fixing some oddities that were left over from
earlier times when we were forced to run PIE executables and were forced to
use a KVM above the kernel.

Fix VM_MAX_ADDRESS that is NOT the max address BUT the max userland address
Fix VM_MAX_KERNEL_ADDRESS that is the absolute max address accesable by the
kernel...

branches: 1.11.2; 1.11.6;
define __USE_TOPDOWN_VM

Revert.

Add checks for architectures that need a check for VM_MIN_ADDRESS

Swap userland code and kvm spaces so that userland lives from VM_MIN_ADDRESS
to VM_MAXUSER_ADDRESS and KVM is above that.

Note that the userspace is surrounded by a configurable amount of
non-accessible barrier space to prevent accidental out-of-boundaries access
even when reading.

Fix vmparam's definitions to the new style

kmem_data_start is no longer needed

build fixes for netbsd-5 and i386

Start NetBSD/usermode's pmap. Its using a temp file as a physical memory
backup and that should be documented in the code. A physical address is thus a
file offset(!) and a virtual address is a `normal' accesible address.

Still to do: various misc functions and pmap_extract() in special.

Credits also go to Ben Harris for his work on the Acorn26 pmap that followed
the Daemon Book recommendation for systems without real page tables on wich
this implementation is modelled after.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.18;
To make NetBSD/userland to boot on i386 choose some defaults in vmparam.h
since for i386 they are defined in page size constants wich NetBSD/userland
doesn't know yet. Also undefine ptrace's __HAVE_PTRACE_MACHDEP since i386
has that but NetBSD/userland not.

Import work-in-progress NetBSD/usermode port.

Regen usermode headers

branches: 1.11.28;
support building on arm

branches: 1.10.6; 1.10.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.4.2; 1.4.6;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.