[src/trunk]: src/sys/arch/usermode Enhance the NetBSD/usermode thunk interface

[reinoud <reinoud%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/65a2038d49c8
branches:  trunk
changeset: 323230:65a2038d49c8
user:      reinoud <reinoud%NetBSD.org@localhost>
date:      Mon Jun 04 19:53:01 2018 +0000

description:
Enhance the NetBSD/usermode thunk interface

diffstat:

 sys/arch/usermode/include/thunk.h  |   7 ++++++-
 sys/arch/usermode/usermode/thunk.c |  38 ++++++++++++++++++++++++++++++++++++--
 2 files changed, 42 insertions(+), 3 deletions(-)

diffs (115 lines):

diff -r 69c33ea8140f -r 65a2038d49c8 sys/arch/usermode/include/thunk.h
--- a/sys/arch/usermode/include/thunk.h Mon Jun 04 16:46:46 2018 +0000
+++ b/sys/arch/usermode/include/thunk.h Mon Jun 04 19:53:01 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: thunk.h,v 1.64 2018/06/01 08:04:57 reinoud Exp $ */
+/* $NetBSD: thunk.h,v 1.65 2018/06/04 19:53:01 reinoud Exp $ */
 
 /*-
  * Copyright (c) 2011 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -92,6 +92,7 @@
 int    thunk_timer_start(timer_t, int);
 int    thunk_timer_getoverrun(timer_t);
 
+void   thunk_kill(pid_t pid, int sig);
 void   thunk_exit(int);
 void   thunk_abort(void);
 
@@ -136,6 +137,8 @@
 void   thunk_sigaddset(sigset_t *sa_mask, int sig);
 int    thunk_sigprocmask(int how, const sigset_t * set, sigset_t *oset);
 int    thunk_atexit(void (*function)(void));
+pid_t  thunk_fork(void);
+int    thunk_ioctl(int fd, unsigned long request, void *opaque);
 
 int    thunk_aio_read(struct aiocb *);
 int    thunk_aio_write(struct aiocb *);
@@ -166,6 +169,8 @@
 int    thunk_pollin_tap(int, int);
 int    thunk_pollout_tap(int, int);
 
+int    thunk_assert_presence(vaddr_t from, size_t size);
+
 typedef struct {
        unsigned int            sample_rate;
        unsigned int            precision;
diff -r 69c33ea8140f -r 65a2038d49c8 sys/arch/usermode/usermode/thunk.c
--- a/sys/arch/usermode/usermode/thunk.c        Mon Jun 04 16:46:46 2018 +0000
+++ b/sys/arch/usermode/usermode/thunk.c        Mon Jun 04 19:53:01 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: thunk.c,v 1.89 2018/06/01 08:04:57 reinoud Exp $ */
+/* $NetBSD: thunk.c,v 1.90 2018/06/04 19:53:01 reinoud Exp $ */
 
 /*-
  * Copyright (c) 2011 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 #ifdef __NetBSD__
-__RCSID("$NetBSD: thunk.c,v 1.89 2018/06/01 08:04:57 reinoud Exp $");
+__RCSID("$NetBSD: thunk.c,v 1.90 2018/06/04 19:53:01 reinoud Exp $");
 #endif
 
 #define _KMEMUSER
@@ -36,6 +36,7 @@
 #define _I386_MACHTYPES_H_
 
 #include "../include/types.h"
+
 #include <sys/mman.h>
 #include <stdarg.h>
 #include <sys/reboot.h>
@@ -344,6 +345,12 @@
 }
 
 void
+thunk_kill(pid_t pid, int sig)
+{
+       kill(pid, sig);
+}
+
+void
 thunk_exit(int status)
 {
        return exit(status);
@@ -646,6 +653,18 @@
        return atexit(function);
 }
 
+pid_t
+thunk_fork(void)
+{
+       return fork();
+}
+
+int
+thunk_ioctl(int fd, unsigned long request, void *opaque)
+{
+       return ioctl(fd, request, opaque);
+}
+
 int
 thunk_aio_read(struct aiocb *aiocbp)
 {
@@ -862,6 +881,21 @@
        return poll(fds, __arraycount(fds), timeout);
 }
 
+
+/* simply make sure its present... yeah its silly */
+int
+thunk_assert_presence(vaddr_t from, size_t size)
+{
+       vaddr_t va;
+       int t = 0;
+
+       for (va = from; va < from + (vaddr_t) size; va += PAGE_SIZE) {
+               t += *(int *) va;
+       }
+       return t;
+}
+
+
 int
 thunk_audio_open(const char *path)
 {