Lots of changes

1 files changed, 1202 insertions, 0 deletions

diff --git a/sim/ppc/emul_netbsd.c b/sim/ppc/emul_netbsd.c
new file mode 100644
index 0000000..e7d09c3
--- /dev/null
+++ b/sim/ppc/emul_netbsd.c
@@ -0,0 +1,1202 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+ 
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ 
+    */
+
+
+#ifndef _EMUL_NETBSD_C_
+#define _EMUL_NETBSD_C_
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/dirent.h>
+
+#define WITH_NetBSD_HOST (NetBSD >= 199306)
+#if WITH_NetBSD_HOST /* here NetBSD as that is what we're emulating */
+#include <sys/syscall.h> /* FIXME - should not be including this one */
+#include <sys/sysctl.h>
+extern int getdirentries(int fd, char *buf, int nbytes, long *basep);
+#endif
+
+#if (BSD < 199306) /* here BSD as just a bug */
+extern int errno;
+#endif
+
+#include "emul_generic.h"
+
+
+#ifndef STATIC_INLINE_EMUL_NETBSD
+#define STATIC_INLINE_EMUL_NETBSD STATIC_INLINE
+#endif
+
+
+#if WITH_NetBSD_HOST
+#define SYS(X) ASSERT(call == (SYS_##X))
+#else
+#define SYS(X)
+#endif
+
+#if WITH_NetBSD_HOST && (PATH_MAX != 1024)
+#error "PATH_MAX not 1024"
+#elif !defined(PATH_MAX)
+#define PATH_MAX 1024
+#endif
+
+
+STATIC_INLINE_EMUL_NETBSD void
+write_stat(unsigned_word addr,
+	   struct stat buf,
+	   cpu *processor,
+	   unsigned_word cia)
+{
+  H2T(buf.st_dev);
+  H2T(buf.st_ino);
+  H2T(buf.st_mode);
+  H2T(buf.st_nlink);
+  H2T(buf.st_uid);
+  H2T(buf.st_gid);
+  H2T(buf.st_rdev);
+  H2T(buf.st_size);
+  H2T(buf.st_atime);
+  /* H2T(buf.st_spare1); */
+  H2T(buf.st_mtime);
+  /* H2T(buf.st_spare2); */
+  H2T(buf.st_ctime);
+  /* H2T(buf.st_spare3); */
+  H2T(buf.st_blksize);
+  H2T(buf.st_blocks);
+#if WITH_NetBSD_HOST
+  H2T(buf.st_flags);
+  H2T(buf.st_gen);
+#endif
+  emul_write_buffer(&buf, addr, sizeof(buf), processor, cia);
+}
+
+  
+#if NetBSD
+STATIC_INLINE_EMUL_NETBSD void
+write_statfs(unsigned_word addr,
+	     struct statfs buf,
+	     cpu *processor,
+	     unsigned_word cia)
+{
+  H2T(buf.f_type);
+  H2T(buf.f_flags);
+  H2T(buf.f_bsize);
+  H2T(buf.f_iosize);
+  H2T(buf.f_blocks);
+  H2T(buf.f_bfree);
+  H2T(buf.f_bavail);
+  H2T(buf.f_files);
+  H2T(buf.f_ffree);
+  H2T(buf.f_fsid.val[0]);
+  H2T(buf.f_fsid.val[1]);
+  H2T(buf.f_owner);
+  /* f_spare[4]; */
+  /* f_fstypename[MFSNAMELEN]; */
+  /* f_mntonname[MNAMELEN]; */
+  /* f_mntfromname[MNAMELEN]; */
+  emul_write_buffer(&buf, addr, sizeof(buf), processor, cia);
+}
+#endif
+
+  
+STATIC_INLINE_EMUL_NETBSD void
+write_timeval(unsigned_word addr,
+	      struct timeval t,
+	      cpu *processor,
+	      unsigned_word cia)
+{
+  H2T(t.tv_sec);
+  H2T(t.tv_usec);
+  emul_write_buffer(&t, addr, sizeof(t), processor, cia);
+}
+
+  
+STATIC_INLINE_EMUL_NETBSD void
+write_timezone(unsigned_word addr,
+	       struct timezone tz,
+	       cpu *processor,
+	       unsigned_word cia)
+{
+  H2T(tz.tz_minuteswest);
+  H2T(tz.tz_dsttime);
+  emul_write_buffer(&tz, addr, sizeof(tz), processor, cia);
+}
+
+  
+#if WITH_NetBSD_HOST
+STATIC_INLINE_EMUL_NETBSD void
+write_direntries(unsigned_word addr,
+		 char *buf,
+		 int nbytes,
+		 cpu *processor,
+		 unsigned_word cia)
+{
+  while (nbytes > 0) {
+    struct dirent *out;
+    struct dirent *in = (struct dirent*)buf;
+    ASSERT(in->d_reclen <= nbytes);
+    out = (struct dirent*)zalloc(in->d_reclen);
+    bcopy(in, out, in->d_reclen);
+    H2T(out->d_fileno);
+    H2T(out->d_reclen);
+    H2T(out->d_type);
+    H2T(out->d_namlen);
+    emul_write_buffer(out, addr, in->d_reclen, processor, cia);
+    nbytes -= in->d_reclen;
+    addr += in->d_reclen;
+    buf += in->d_reclen;
+    zfree(out);
+  }
+}
+#endif
+
+
+STATIC_INLINE_EMUL_NETBSD void
+write_rusage(unsigned_word addr,
+	     struct rusage rusage,
+	     cpu *processor,
+	     unsigned_word cia)
+{
+  H2T(rusage.ru_utime.tv_sec); /* user time used */
+  H2T(rusage.ru_utime.tv_usec);
+  H2T(rusage.ru_stime.tv_sec); /* system time used */
+  H2T(rusage.ru_stime.tv_usec);
+  H2T(rusage.ru_maxrss);          /* integral max resident set size */
+  H2T(rusage.ru_ixrss);           /* integral shared text memory size */
+  H2T(rusage.ru_idrss);           /* integral unshared data size */
+  H2T(rusage.ru_isrss);           /* integral unshared stack size */
+  H2T(rusage.ru_minflt);          /* page reclaims */
+  H2T(rusage.ru_majflt);          /* page faults */
+  H2T(rusage.ru_nswap);           /* swaps */
+  H2T(rusage.ru_inblock);         /* block input operations */
+  H2T(rusage.ru_oublock);         /* block output operations */
+  H2T(rusage.ru_msgsnd);          /* messages sent */
+  H2T(rusage.ru_msgrcv);          /* messages received */
+  H2T(rusage.ru_nsignals);        /* signals received */
+  H2T(rusage.ru_nvcsw);           /* voluntary context switches */
+  H2T(rusage.ru_nivcsw);          /* involuntary context switches */
+  emul_write_buffer(&rusage, addr, sizeof(rusage), processor, cia);
+}
+
+  
+STATIC_INLINE_EMUL_NETBSD void
+do_exit(emulation *emul,
+	unsigned call,
+	const int arg0,
+	cpu *processor,
+	unsigned_word cia)
+{
+  int status = (int)cpu_registers(processor)->gpr[arg0];
+  SYS(exit);
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d)\n", status);
+
+  cpu_halt(processor, cia, was_exited, status);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_read(emulation *emul,
+	unsigned call,
+	const int arg0,
+	cpu *processor,
+	unsigned_word cia)
+{
+  void *scratch_buffer;
+  int d = (int)cpu_registers(processor)->gpr[arg0];
+  unsigned_word buf = cpu_registers(processor)->gpr[arg0+1];
+  int nbytes = cpu_registers(processor)->gpr[arg0+2];
+  int status;
+  int nr_moved;
+  SYS(read);
+  
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, 0x%lx, %d", d, (long)buf, nbytes);
+
+  /* get a tempoary bufer */
+  scratch_buffer = zalloc(nbytes);
+  
+  /* check if buffer exists by reading it */
+  emul_read_buffer(scratch_buffer, buf, nbytes, processor, cia);
+  
+  /* read */
+#if 0
+  if (d == 0) {
+    status = fread (scratch_buffer, 1, nbytes, stdin);
+    if (status == 0 && ferror (stdin))
+      status = -1;
+  }
+#endif
+  status = read (d, scratch_buffer, nbytes);
+  
+  if (status == -1) {
+    cpu_registers(processor)->gpr[0] = errno;
+  } else {
+    cpu_registers(processor)->gpr[3] = status;
+    
+    if (status > 0)
+      emul_write_buffer(scratch_buffer, buf, status, processor, cia);
+  }
+  
+  zfree(scratch_buffer);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_write(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  void *scratch_buffer = NULL;
+  int nr_moved;
+  int d = (int)cpu_registers(processor)->gpr[arg0];
+  unsigned_word buf = cpu_registers(processor)->gpr[arg0+1];
+  int nbytes = cpu_registers(processor)->gpr[arg0+2];
+  int status;
+  SYS(write);
+  
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, 0x%lx, %d", d, (long)buf, nbytes);
+
+  /* get a tempoary bufer */
+  scratch_buffer = zalloc(nbytes); /* FIXME - nbytes == 0 */
+  
+  /* copy in */
+  nr_moved = vm_data_map_read_buffer(cpu_data_map(processor),
+				     scratch_buffer,
+				     buf,
+				     nbytes);
+  if (nr_moved != nbytes) {
+    /* FIXME - should handle better */
+    error("system_call()write copy failed (nr_moved=%d != nbytes=%d)\n",
+	  nr_moved, nbytes);
+  }
+  
+  /* write */
+  status = write(d, scratch_buffer, nbytes);
+  emul_write_status(processor, status, errno);
+  zfree(scratch_buffer);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_open(emulation *emul,
+	unsigned call,
+	const int arg0,
+	cpu *processor,
+	unsigned_word cia)
+{
+  unsigned_word path_addr = cpu_registers(processor)->gpr[arg0];
+  char path_buf[PATH_MAX];
+  char *path = emul_read_string(path_buf, path_addr, PATH_MAX, processor, cia);
+  int flags = (int)cpu_registers(processor)->gpr[arg0+1];
+  int mode = (int)cpu_registers(processor)->gpr[arg0+2];
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("0x%lx [%s], 0x%x, 0x%x", (long)path_addr, path, flags, mode);
+
+  SYS(open);
+  emul_write_status(processor, open(path, flags, mode), errno);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_close(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  int d = (int)cpu_registers(processor)->gpr[arg0];
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d", d);
+
+  SYS(close);
+  emul_write_status(processor, close(d), errno);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_break(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+     /* just pass this onto the `vm' device */
+{
+  psim *system = cpu_system(processor);
+  const device *vm = psim_device(system, "/vm");
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("0x%lx", (long)cpu_registers(processor)->gpr[arg0]);
+
+  SYS(break);
+  vm->callback->ioctl(vm,
+		      system,
+		      processor,
+		      cia,
+		      0, /*ioctl*/
+		      NULL); /*ioctl-data*/
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_getpid(emulation *emul,
+	  unsigned call,
+	  const int arg0,
+	  cpu *processor,
+	  unsigned_word cia)
+{
+  SYS(getpid);
+  cpu_registers(processor)->gpr[3] = (int)getpid();
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_getuid(emulation *emul,
+	  unsigned call,
+	  const int arg0,
+	  cpu *processor,
+	  unsigned_word cia)
+{
+  SYS(getuid);
+  cpu_registers(processor)->gpr[3] = (int)getuid();
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_geteuid(emulation *emul,
+	   unsigned call,
+	   const int arg0,
+	   cpu *processor,
+	   unsigned_word cia)
+{
+  SYS(geteuid);
+  cpu_registers(processor)->gpr[3] = (int)geteuid();
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_kill(emulation *emul,
+	unsigned call,
+	const int arg0,
+	cpu *processor,
+	unsigned_word cia)
+{
+  pid_t pid = cpu_registers(processor)->gpr[arg0];
+  int sig = cpu_registers(processor)->gpr[arg0+1];
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, %d", (int)pid, sig);
+
+  SYS(kill);
+  printf_filtered("SYS_kill at 0x%x - more to this than just being killed\n",
+		  cia);
+  cpu_halt(processor, cia, was_signalled, sig);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_dup(emulation *emul,
+       unsigned call,
+       const int arg0,
+       cpu *processor,
+       unsigned_word cia)
+{
+  int oldd = cpu_registers(processor)->gpr[arg0];
+  int status = dup(oldd);
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d", oldd);
+
+  SYS(dup);
+  emul_write_status(processor, status, errno);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_getegid(emulation *emul,
+	   unsigned call,
+	   const int arg0,
+	   cpu *processor,
+	   unsigned_word cia)
+{
+  SYS(getegid);
+  cpu_registers(processor)->gpr[3] = (int)getegid();
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_getgid(emulation *emul,
+	  unsigned call,
+	  const int arg0,
+	  cpu *processor,
+	  unsigned_word cia)
+{
+  SYS(getgid);
+  cpu_registers(processor)->gpr[3] = (int)getgid();
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_sigprocmask(emulation *emul,
+	       unsigned call,
+	       const int arg0,
+	       cpu *processor,
+	       unsigned_word cia)
+{
+  natural_word how = cpu_registers(processor)->gpr[arg0];
+  unsigned_word set = cpu_registers(processor)->gpr[arg0+1];
+  unsigned_word oset = cpu_registers(processor)->gpr[arg0+2];
+  SYS(sigprocmask);
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%ld, 0x%ld, 0x%ld", (long)how, (long)set, (long)oset);
+
+  cpu_registers(processor)->gpr[3] = 0;
+  cpu_registers(processor)->gpr[4] = set;
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_ioctl(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  int d = cpu_registers(processor)->gpr[arg0];
+  unsigned request = cpu_registers(processor)->gpr[arg0+1];
+  unsigned_word argp_addr = cpu_registers(processor)->gpr[arg0+2];
+
+#if !WITH_NetBSD_HOST
+  cpu_registers(processor)->gpr[arg0] = 0; /* just succeed */
+#else
+  unsigned param_len = IOCPARM_LEN(request);
+  unsigned basecmd = IOCBASECMD(request);
+  unsigned group = IOCGROUP(request);
+  unsigned dir = request & IOC_DIRMASK;
+  char *argp = NULL;
+  int status;
+  SYS(ioctl);
+  /* what we haven't done */
+  if (dir & IOC_IN /* write into the io device */
+      || dir & IOC_OUT
+      || !(dir & IOC_VOID))
+    error("do_ioctl() read or write of parameter not implemented\n");
+  status = ioctl(d, request, NULL);
+  emul_write_status(processor, status, errno);
+#endif
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, 0x%x, 0x%lx", d, request, (long)argp_addr);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_umask(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  int mask = cpu_registers(processor)->gpr[arg0];
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("0%o", mask);
+
+  SYS(umask);
+  cpu_registers(processor)->gpr[3] = umask(mask);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_dup2(emulation *emul,
+	unsigned call,
+	const int arg0,
+	cpu *processor,
+	unsigned_word cia)
+{
+  int oldd = cpu_registers(processor)->gpr[arg0];
+  int newd = cpu_registers(processor)->gpr[arg0+1];
+  int status = dup2(oldd, newd);
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, %d", oldd, newd);
+
+  SYS(dup2);
+  emul_write_status(processor, status, errno);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_fcntl(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  int fd = cpu_registers(processor)->gpr[arg0];
+  int cmd = cpu_registers(processor)->gpr[arg0+1];
+  int arg = cpu_registers(processor)->gpr[arg0+2];
+  int status;
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, %d, %d", fd, cmd, arg);
+
+  SYS(fcntl);
+  status = fcntl(fd, cmd, arg);
+  emul_write_status(processor, status, errno);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_gettimeofday(emulation *emul,
+		unsigned call,
+		const int arg0,
+		cpu *processor,
+		unsigned_word cia)
+{
+  unsigned_word t_addr = cpu_registers(processor)->gpr[arg0];
+  unsigned_word tz_addr = cpu_registers(processor)->gpr[arg0+1];
+  struct timeval t;
+  struct timezone tz;
+  int status = gettimeofday((t_addr != 0 ? &t : NULL),
+			    (tz_addr != 0 ? &tz : NULL));
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("0x%lx, 0x%lx", (long)t_addr, (long)tz_addr);
+
+  SYS(gettimeofday);
+  emul_write_status(processor, status, errno);
+  if (status == 0) {
+    if (t_addr != 0)
+      write_timeval(t_addr, t, processor, cia);
+    if (tz_addr != 0)
+      write_timezone(tz_addr, tz, processor, cia);
+  }
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_getrusage(emulation *emul,
+	     unsigned call,
+	     const int arg0,
+	     cpu *processor,
+	     unsigned_word cia)
+{
+  int who = cpu_registers(processor)->gpr[arg0];
+  unsigned_word rusage_addr = cpu_registers(processor)->gpr[arg0+1];
+  struct rusage rusage;
+  int status = getrusage(who, (rusage_addr != 0 ? &rusage : NULL));
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, 0x%lx", who, (long)rusage_addr);
+
+  SYS(getrusage);
+  emul_write_status(processor, status, errno);
+  if (status == 0) {
+    if (rusage_addr != 0)
+      write_rusage(rusage_addr, rusage, processor, cia);
+  }
+}
+
+
+#if !WITH_NetBSD_HOST
+#define do_fstatfs 0
+#else
+STATIC_INLINE_EMUL_NETBSD void
+do_fstatfs(emulation *emul,
+	   unsigned call,
+	   const int arg0,
+	   cpu *processor,
+	   unsigned_word cia)
+{
+  int fd = cpu_registers(processor)->gpr[arg0];
+  unsigned_word buf_addr = cpu_registers(processor)->gpr[arg0+1];
+  struct statfs buf;
+  int status;
+
+  if (WITH_TRACE && ppc_trace[trace_os_emul])
+    printf_filtered ("%d, 0x%lx", fd, (long)buf_addr);
+
+  SYS(fstatfs);
+  status = fstatfs(fd, (buf_addr == 0 ? NULL : &buf));
+  emul_write_status(processor, status, errno);
+  if (status == 0) {
+    if (buf_addr != 0)
+      write_statfs(buf_addr, buf, processor, cia);
+  }
+}
+#endif
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_stat(emulation *emul,
+	unsigned call,
+	const int arg0,
+	cpu *processor,
+	unsigned_word cia)
+{
+  char path_buf[PATH_MAX];
+  unsigned_word path_addr = cpu_registers(processor)->gpr[arg0];
+  unsigned_word stat_buf_addr = cpu_registers(processor)->gpr[arg0+1];
+  char *path = emul_read_string(path_buf, path_addr, PATH_MAX, processor, cia);
+  struct stat buf;
+  int status;
+  SYS(stat);
+  status = stat(path, &buf);
+  emul_write_status(processor, status, errno);
+  if (status == 0)
+    write_stat(stat_buf_addr, buf, processor, cia);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_fstat(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  int fd = cpu_registers(processor)->gpr[arg0];
+  unsigned_word stat_buf_addr = cpu_registers(processor)->gpr[arg0+1];
+  struct stat buf;
+  SYS(fstat);
+  emul_write_status(processor, fstat(fd, &buf), errno);
+  write_stat(stat_buf_addr, buf, processor, cia);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_lstat(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  char path_buf[PATH_MAX];
+  unsigned_word path_addr = cpu_registers(processor)->gpr[arg0];
+  char *path = emul_read_string(path_buf, path_addr, PATH_MAX, processor, cia);
+  unsigned_word stat_buf_addr = cpu_registers(processor)->gpr[arg0+1];
+  struct stat buf;
+  SYS(lstat);
+  emul_write_status(processor, stat(path, &buf), errno);
+  write_stat(stat_buf_addr, buf, processor, cia);
+}
+
+
+#if !WITH_NetBSD_HOST
+#define do_getdirentries 0
+#else
+STATIC_INLINE_EMUL_NETBSD void
+do_getdirentries(emulation *emul,
+		 unsigned call,
+		 const int arg0,
+		 cpu *processor,
+		 unsigned_word cia)
+{
+  int fd = cpu_registers(processor)->gpr[arg0];
+  unsigned_word buf_addr = cpu_registers(processor)->gpr[arg0+1];
+  char *buf;
+  int nbytes = cpu_registers(processor)->gpr[arg0+2];
+  unsigned_word basep_addr = cpu_registers(processor)->gpr[arg0+3];
+  long basep;
+  int status;
+  SYS(getdirentries);
+  if (buf_addr != 0 && nbytes >= 0)
+    buf = zalloc(nbytes);
+  else
+    buf = NULL;
+  status = getdirentries(fd,
+			 (buf_addr == 0 ? NULL : buf),
+			 nbytes,
+			 (basep_addr == 0 ? NULL : &basep));
+  emul_write_status(processor, status, errno);
+  if (basep_addr != 0)
+    emul_write_word(basep_addr, basep, processor, cia);
+  if (status > 0)
+    write_direntries(buf_addr, buf, status, processor, cia);
+  if (buf != NULL)
+    zfree(buf);
+}
+#endif
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do___syscall(emulation *emul,
+	     unsigned call,
+	     const int arg0,
+	     cpu *processor,
+	     unsigned_word cia)
+{
+  SYS(__syscall);
+  emul_do_call(emul,
+	       cpu_registers(processor)->gpr[arg0],
+	       arg0 + 1,
+	       processor,
+	       cia);
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do_lseek(emulation *emul,
+	 unsigned call,
+	 const int arg0,
+	 cpu *processor,
+	 unsigned_word cia)
+{
+  int fildes = cpu_registers(processor)->gpr[arg0];
+  off_t offset = emul_read_gpr64(processor, arg0+2);
+  int whence = cpu_registers(processor)->gpr[arg0+4];
+  off_t status;
+  SYS(lseek);
+  status = lseek(fildes, offset, whence);
+  if (status == -1)
+    emul_write_status(processor, -1, errno);
+  else {
+    emul_write_gpr64(processor, 3, status);
+  }
+}
+
+
+STATIC_INLINE_EMUL_NETBSD void
+do___sysctl(emulation *emul,
+	    unsigned call,
+	    const int arg0,
+	    cpu *processor,
+	    unsigned_word cia)
+{
+  /* call the arguments by their real name */
+  unsigned_word name = cpu_registers(processor)->gpr[arg0];
+  natural_word namelen = cpu_registers(processor)->gpr[arg0+1];
+  unsigned_word oldp = cpu_registers(processor)->gpr[arg0+2];
+  unsigned_word oldlenp = cpu_registers(processor)->gpr[arg0+3];
+  natural_word oldlen;
+  natural_word mib;
+  natural_word int_val;
+  SYS(__sysctl);
+
+  /* pluck out the management information base id */
+  if (namelen < 1)
+    error("system_call()SYS___sysctl bad name[0]\n");
+  mib = vm_data_map_read_word(cpu_data_map(processor),
+			      name,
+			      processor,
+			      cia);
+  name += sizeof(mib);
+  
+  /* see what to do with it ... */
+  switch (mib) {
+  case 6/*CTL_HW*/:
+#if WITH_NetBSD_HOST && (CTL_HW != 6)
+#  error "CTL_HW"
+#endif
+    if (namelen < 2)
+      error("system_call()SYS___sysctl - CTL_HW - bad name[1]\n");
+    mib = vm_data_map_read_word(cpu_data_map(processor),
+				name,
+				processor,
+				cia);
+    name += sizeof(mib);
+    switch (mib) {
+    case 7/*HW_PAGESIZE*/:
+#if WITH_NetBSD_HOST && (HW_PAGESIZE != 7)
+#  error "HW_PAGESIZE"
+#endif
+      oldlen = vm_data_map_read_word(cpu_data_map(processor),
+				     oldlenp,
+				     processor,
+				     cia);
+      if (sizeof(natural_word) > oldlen)
+	error("system_call()sysctl - CTL_HW.HW_PAGESIZE - to small\n");
+      int_val = 8192;
+      oldlen = sizeof(int_val);
+      emul_write_word(oldp, int_val, processor, cia);
+      emul_write_word(oldlenp, oldlen, processor, cia);
+      break;
+    default:
+      error("sysctl() CTL_HW.%d unknown\n", mib);
+      break;
+    }
+    break;
+  default:
+    error("sysctl() name[0]=%s unknown\n", (int)mib);
+    break;
+  }
+  cpu_registers(processor)->gpr[3] = 0;
+}
+
+
+
+static emul_call_descriptor netbsd_descriptors[] = {
+  /* 0 */ { 0, "syscall", { 0, }, 0 },
+  /* 1 */ { do_exit, "exit", { 0, }, 0 },
+  /* 2 */ { 0, "fork", { 0, }, 0 },	  
+  /* 3 */ { do_read, "read", { 0, }, 0 },
+  /* 4 */ { do_write, "write", { 0, }, 0 },
+  /* 5 */ { do_open, "open", { 0, }, 0 },
+  /* 6 */ { do_close, "close", { 0, }, 0 },
+  /* 7 */ { 0, "wait4", { 0, }, 0 },
+  { 0, }, /* 8 is old creat */
+  /* 9 */ { 0, "link", { 0, }, 0 },
+  /* 10 */ { 0, "unlink", { 0, }, 0 },
+  { 0, }, /* 11 is obsolete execv */
+  /* 12 */ { 0, "chdir", { 0, }, 0 },
+  /* 13 */ { 0, "fchdir", { 0, }, 0 },
+  /* 14 */ { 0, "mknod", { 0, }, 0 },
+  /* 15 */ { 0, "chmod", { 0, }, 0 },
+  /* 16 */ { 0, "chown", { 0, }, 0 },
+  /* 17 */ { do_break, "break", { 0, }, 0 },
+  /* 18 */ { 0, "getfsstat", { 0, }, 0 },
+  { 0, }, /* 19 is old lseek */
+  /* 20 */ { do_getpid, "getpid", { 0, }, 0 },
+  /* 21 */ { 0, "mount", { 0, }, 0 },
+  /* 22 */ { 0, "unmount", { 0, }, 0 },
+  /* 23 */ { 0, "setuid", { 0, }, 0 },
+  /* 24 */ { do_getuid, "getuid", { 0, }, 0 },
+  /* 25 */ { do_geteuid, "geteuid", { 0, }, 0 },
+  /* 26 */ { 0, "ptrace", { 0, }, 0 },
+  /* 27 */ { 0, "recvmsg", { 0, }, 0 },
+  /* 28 */ { 0, "sendmsg", { 0, }, 0 },
+  /* 29 */ { 0, "recvfrom", { 0, }, 0 },
+  /* 30 */ { 0, "accept", { 0, }, 0 },
+  /* 31 */ { 0, "getpeername", { 0, }, 0 },
+  /* 32 */ { 0, "getsockname", { 0, }, 0 },
+  /* 33 */ { 0, "access", { 0, }, 0 },
+  /* 34 */ { 0, "chflags", { 0, }, 0 },
+  /* 35 */ { 0, "fchflags", { 0, }, 0 },
+  /* 36 */ { 0, "sync", { 0, }, 0 },
+  /* 37 */ { do_kill, "kill", { 0, }, 0 },
+  { 0, }, /* 38 is old stat */
+  /* 39 */ { 0, "getppid", { 0, }, 0 },
+  { 0, }, /* 40 is old lstat */
+  /* 41 */ { do_dup, "dup", { 0, }, 0 },
+  /* 42 */ { 0, "pipe", { 0, }, 0 },
+  /* 43 */ { do_getegid, "getegid", { 0, }, 0 },
+  /* 44 */ { 0, "profil", { 0, }, 0 },
+  /* 45 */ { 0, "ktrace", { 0, }, 0 },
+  /* 46 */ { 0, "sigaction", { 0, }, 0 },
+  /* 47 */ { do_getgid, "getgid", { 0, }, 0 },
+  /* 48 */ { do_sigprocmask, "sigprocmask", { 0, }, 0 },
+  /* 49 */ { 0, "getlogin", { 0, }, 0 },
+  /* 50 */ { 0, "setlogin", { 0, }, 0 },
+  /* 51 */ { 0, "acct", { 0, }, 0 },
+  /* 52 */ { 0, "sigpending", { 0, }, 0 },
+  /* 53 */ { 0, "sigaltstack", { 0, }, 0 },
+  /* 54 */ { do_ioctl, "ioctl", { 0, }, 0 },
+  /* 55 */ { 0, "reboot", { 0, }, 0 },
+  /* 56 */ { 0, "revoke", { 0, }, 0 },
+  /* 57 */ { 0, "symlink", { 0, }, 0 },
+  /* 58 */ { 0, "readlink", { 0, }, 0 },
+  /* 59 */ { 0, "execve", { 0, }, 0 },
+  /* 60 */ { do_umask, "umask", { 0, }, 0 },
+  /* 61 */ { 0, "chroot", { 0, }, 0 },
+  { 0, }, /* 62 is old fstat */
+  { 0, }, /* 63 is old getkerninfo */
+  { 0, }, /* 64 is old getpagesize */
+  /* 65 */ { 0, "msync", { 0, }, 0 },
+  /* 66 */ { 0, "vfork", { 0, }, 0 },
+  { 0, }, /* 67 is obsolete vread */
+  { 0, }, /* 68 is obsolete vwrite */
+  /* 69 */ { 0, "sbrk", { 0, }, 0 },
+  /* 70 */ { 0, "sstk", { 0, }, 0 },
+  { 0, }, /* 71 is old mmap */
+  /* 72 */ { 0, "vadvise", { 0, }, 0 },
+  /* 73 */ { 0, "munmap", { 0, }, 0 },
+  /* 74 */ { 0, "mprotect", { 0, }, 0 },
+  /* 75 */ { 0, "madvise", { 0, }, 0 },
+  { 0, }, /* 76 is obsolete vhangup */
+  { 0, }, /* 77 is obsolete vlimit */
+  /* 78 */ { 0, "mincore", { 0, }, 0 },
+  /* 79 */ { 0, "getgroups", { 0, }, 0 },
+  /* 80 */ { 0, "setgroups", { 0, }, 0 },
+  /* 81 */ { 0, "getpgrp", { 0, }, 0 },
+  /* 82 */ { 0, "setpgid", { 0, }, 0 },
+  /* 83 */ { 0, "setitimer", { 0, }, 0 },
+  { 0, }, /* 84 is old wait */
+  /* 85 */ { 0, "swapon", { 0, }, 0 },
+  /* 86 */ { 0, "getitimer", { 0, }, 0 },
+  { 0, }, /* 87 is old gethostname */
+  { 0, }, /* 88 is old sethostname */
+  { 0, }, /* 89 is old getdtablesize */
+  { do_dup2, "dup2", { 0, }, 0 },
+  { 0, }, /* 91 */
+  /* 92 */ { do_fcntl, "fcntl", { 0, }, 0 },
+  /* 93 */ { 0, "select", { 0, }, 0 },
+  { 0, }, /* 94 */
+  /* 95 */ { 0, "fsync", { 0, }, 0 },
+  /* 96 */ { 0, "setpriority", { 0, }, 0 },
+  /* 97 */ { 0, "socket", { 0, }, 0 },
+  /* 98 */ { 0, "connect", { 0, }, 0 },
+  { 0, }, /* 99 is old accept */
+  /* 100 */ { 0, "getpriority", { 0, }, 0 },
+  { 0, }, /* 101 is old send */
+  { 0, }, /* 102 is old recv */
+  /* 103 */ { 0, "sigreturn", { 0, }, 0 },
+  /* 104 */ { 0, "bind", { 0, }, 0 },
+  /* 105 */ { 0, "setsockopt", { 0, }, 0 },
+  /* 106 */ { 0, "listen", { 0, }, 0 },
+  { 0, }, /* 107 is obsolete vtimes */
+  { 0, }, /* 108 is old sigvec */
+  { 0, }, /* 109 is old sigblock */
+  { 0, }, /* 110 is old sigsetmask */
+  /* 111 */ { 0, "sigsuspend", { 0, }, 0 },
+  { 0, }, /* 112 is old sigstack */
+  { 0, }, /* 113 is old recvmsg */
+  { 0, }, /* 114 is old sendmsg */
+  /* - is obsolete vtrace */ { 0, "vtrace	115", { 0, }, 0 },
+  /* 116 */ { do_gettimeofday, "gettimeofday", { 0, }, 0 },
+  /* 117 */ { do_getrusage, "getrusage", { 0, }, 0 },
+  /* 118 */ { 0, "getsockopt", { 0, }, 0 },
+  /* 119 */ { 0, "resuba", { 0, }, 0 },
+  /* 120 */ { 0, "readv", { 0, }, 0 },
+  /* 121 */ { 0, "writev", { 0, }, 0 },
+  /* 122 */ { 0, "settimeofday", { 0, }, 0 },
+  /* 123 */ { 0, "fchown", { 0, }, 0 },
+  /* 124 */ { 0, "fchmod", { 0, }, 0 },
+  { 0, }, /* 125 is old recvfrom */
+  { 0, }, /* 126 is old setreuid */
+  { 0, }, /* 127 is old setregid */
+  /* 128 */ { 0, "rename", { 0, }, 0 },
+  { 0, }, /* 129 is old truncate */
+  { 0, }, /* 130 is old ftruncate */
+  /* 131 */ { 0, "flock", { 0, }, 0 },
+  /* 132 */ { 0, "mkfifo", { 0, }, 0 },
+  /* 133 */ { 0, "sendto", { 0, }, 0 },
+  /* 134 */ { 0, "shutdown", { 0, }, 0 },
+  /* 135 */ { 0, "socketpair", { 0, }, 0 },
+  /* 136 */ { 0, "mkdir", { 0, }, 0 },
+  /* 137 */ { 0, "rmdir", { 0, }, 0 },
+  /* 138 */ { 0, "utimes", { 0, }, 0 },
+  { 0, }, /* 139 is obsolete 4.2 sigreturn */
+  /* 140 */ { 0, "adjtime", { 0, }, 0 },
+  { 0, }, /* 141 is old getpeername */
+  { 0, }, /* 142 is old gethostid */
+  { 0, }, /* 143 is old sethostid */
+  { 0, }, /* 144 is old getrlimit */
+  { 0, }, /* 145 is old setrlimit */
+  { 0, }, /* 146 is old killpg */
+  /* 147 */ { 0, "setsid", { 0, }, 0 },
+  /* 148 */ { 0, "quotactl", { 0, }, 0 },
+  { 0, }, /* 149 is old quota */
+  { 0, }, /* 150 is old getsockname */
+  { 0, }, /* 151 */
+  { 0, }, /* 152 */
+  { 0, }, /* 153 */
+  { 0, }, /* 154 */
+  /* 155 */ { 0, "nfssvc", { 0, }, 0 },
+  { 0, }, /* 156 is old getdirentries */
+  /* 157 */ { 0, "statfs", { 0, }, 0 },
+  /* 158 */ { do_fstatfs, "fstatfs", { 0, }, 0 },
+  { 0, }, /* 159 */
+  { 0, }, /* 160 */
+  /* 161 */ { 0, "getfh", { 0, }, 0 },
+  { 0, }, /* 162 is old getdomainname */
+  { 0, }, /* 163 is old setdomainname */
+  { 0, }, /* 164 is old uname */
+  /* 165 */ { 0, "sysarch", { 0, }, 0 },
+  { 0, }, /* 166 */
+  { 0, }, /* 167 */
+  { 0, }, /* 168 */
+  /* 169 */ { 0, "semsys", { 0, }, 0 },
+  /* 170 */ { 0, "msgsys", { 0, }, 0 },
+  /* 171 */ { 0, "shmsys", { 0, }, 0 },
+  { 0, }, /* 172 */
+  { 0, }, /* 173 */
+  { 0, }, /* 174 */
+  { 0, }, /* 175 */
+  { 0, }, /* 176 */
+  { 0, }, /* 177 */
+  { 0, }, /* 178 */
+  { 0, }, /* 179 */
+  { 0, }, /* 180 */
+  /* 181 */ { 0, "setgid", { 0, }, 0 },
+  /* 182 */ { 0, "setegid", { 0, }, 0 },
+  /* 183 */ { 0, "seteuid", { 0, }, 0 },
+  /* 184 */ { 0, "lfs_bmapv", { 0, }, 0 },
+  /* 185 */ { 0, "lfs_markv", { 0, }, 0 },
+  /* 186 */ { 0, "lfs_segclean", { 0, }, 0 },
+  /* 187 */ { 0, "lfs_segwait", { 0, }, 0 },
+  /* 188 */ { do_stat, "stat", { 0, }, 0 },
+  /* 189 */ { do_fstat, "fstat", { 0, }, 0 },
+  /* 190 */ { do_lstat, "lstat", { 0, }, 0 },
+  /* 191 */ { 0, "pathconf", { 0, }, 0 },
+  /* 192 */ { 0, "fpathconf", { 0, }, 0 },
+  { 0, }, /* 193 */
+  /* 194 */ { 0, "getrlimit", { 0, }, 0 },
+  /* 195 */ { 0, "setrlimit", { 0, }, 0 },
+  /* 196 */ { do_getdirentries, "getdirentries", { 0, }, 0 },
+  /* 197 */ { 0, "mmap", { 0, }, 0 },
+  /* 198 */ { do___syscall, "__syscall", { 0, }, 0 },
+  /* 199 */ { do_lseek, "lseek", { 0, }, 0 },
+  /* 200 */ { 0, "truncate", { 0, }, 0 },
+  /* 201 */ { 0, "ftruncate", { 0, }, 0 },
+  /* 202 */ { do___sysctl, "__sysctl", { 0, }, 0 },
+  /* 203 */ { 0, "mlock", { 0, }, 0 },
+  /* 204 */ { 0, "munlock", { 0, }, 0 },
+};
+    
+static char *(netbsd_error_names[]) = {
+  /* 0 */ "ESUCCESS",
+  /* 1 */ "EPERM",
+  /* 2 */ "ENOENT",
+  /* 3 */ "ESRCH",
+  /* 4 */ "EINTR",
+  /* 5 */ "EIO",
+  /* 6 */ "ENXIO",
+  /* 7 */ "E2BIG",
+  /* 8 */ "ENOEXEC",
+  /* 9 */ "EBADF",
+  /* 10 */ "ECHILD",
+  /* 11 */ "EDEADLK",
+  /* 12 */ "ENOMEM",
+  /* 13 */ "EACCES",
+  /* 14 */ "EFAULT",
+  /* 15 */ "ENOTBLK",
+  /* 16 */ "EBUSY",
+  /* 17 */ "EEXIST",
+  /* 18 */ "EXDEV",
+  /* 19 */ "ENODEV",
+  /* 20 */ "ENOTDIR",
+  /* 21 */ "EISDIR",
+  /* 22 */ "EINVAL",
+  /* 23 */ "ENFILE",
+  /* 24 */ "EMFILE",
+  /* 25 */ "ENOTTY",
+  /* 26 */ "ETXTBSY",
+  /* 27 */ "EFBIG",
+  /* 28 */ "ENOSPC",
+  /* 29 */ "ESPIPE",
+  /* 30 */ "EROFS",
+  /* 31 */ "EMLINK",
+  /* 32 */ "EPIPE",
+  /* 33 */ "EDOM",
+  /* 34 */ "ERANGE",
+  /* 35 */ "EAGAIN",
+  /* 36 */ "EINPROGRESS",
+  /* 37 */ "EALREADY",
+  /* 38 */ "ENOTSOCK",
+  /* 39 */ "EDESTADDRREQ",
+  /* 40 */ "EMSGSIZE",
+  /* 41 */ "EPROTOTYPE",
+  /* 42 */ "ENOPROTOOPT",
+  /* 43 */ "EPROTONOSUPPORT",
+  /* 44 */ "ESOCKTNOSUPPORT",
+  /* 45 */ "EOPNOTSUPP",
+  /* 46 */ "EPFNOSUPPORT",
+  /* 47 */ "EAFNOSUPPORT",
+  /* 48 */ "EADDRINUSE",
+  /* 49 */ "EADDRNOTAVAIL",
+  /* 50 */ "ENETDOWN",
+  /* 51 */ "ENETUNREACH",
+  /* 52 */ "ENETRESET",
+  /* 53 */ "ECONNABORTED",
+  /* 54 */ "ECONNRESET",
+  /* 55 */ "ENOBUFS",
+  /* 56 */ "EISCONN",
+  /* 57 */ "ENOTCONN",
+  /* 58 */ "ESHUTDOWN",
+  /* 59 */ "ETOOMANYREFS",
+  /* 60 */ "ETIMEDOUT",
+  /* 61 */ "ECONNREFUSED",
+  /* 62 */ "ELOOP",
+  /* 63 */ "ENAMETOOLONG",
+  /* 64 */ "EHOSTDOWN",
+  /* 65 */ "EHOSTUNREACH",
+  /* 66 */ "ENOTEMPTY",
+  /* 67 */ "EPROCLIM",
+  /* 68 */ "EUSERS",
+  /* 69 */ "EDQUOT",
+  /* 70 */ "ESTALE",
+  /* 71 */ "EREMOTE",
+  /* 72 */ "EBADRPC",
+  /* 73 */ "ERPCMISMATCH",
+  /* 74 */ "EPROGUNAVAIL",
+  /* 75 */ "EPROGMISMATCH",
+  /* 76 */ "EPROCUNAVAIL",
+  /* 77 */ "ENOLCK",
+  /* 78 */ "ENOSYS",
+  /* 79 */ "EFTYPE",
+  /* 80 */ "EAUTH",
+  /* 81 */ "ENEEDAUTH",
+  /* 81 */ "ELAST",
+};
+
+static char *(netbsd_signal_names[]) = {
+  /* 0 */ 0,
+  /* 1 */ "SIGHUP",
+  /* 2 */ "SIGINT",
+  /* 3 */ "SIGQUIT",
+  /* 4 */ "SIGILL",
+  /* 5 */ "SIGTRAP",
+  /* 6 */ "SIGABRT",
+  /* 7 */ "SIGEMT",
+  /* 8 */ "SIGFPE",
+  /* 9 */ "SIGKILL",
+  /* 10 */ "SIGBUS",
+  /* 11 */ "SIGSEGV",
+  /* 12 */ "SIGSYS",
+  /* 13 */ "SIGPIPE",
+  /* 14 */ "SIGALRM",
+  /* 15 */ "SIGTERM",
+  /* 16 */ "SIGURG",
+  /* 17 */ "SIGSTOP",
+  /* 18 */ "SIGTSTP",
+  /* 19 */ "SIGCONT",
+  /* 20 */ "SIGCHLD",
+  /* 21 */ "SIGTTIN",
+  /* 22 */ "SIGTTOU",
+  /* 23 */ "SIGIO",
+  /* 24 */ "SIGXCPU",
+  /* 25 */ "SIGXFSZ",
+  /* 26 */ "SIGVTALRM",
+  /* 27 */ "SIGPROF",
+  /* 28 */ "SIGWINCH",
+  /* 29 */ "SIGINFO",
+  /* 30 */ "SIGUSR1",
+  /* 31 */ "SIGUSR2",
+};
+
+emulation emul_netbsd = {
+  netbsd_descriptors,
+  sizeof(netbsd_descriptors) / sizeof(netbsd_descriptors[0]),
+  netbsd_error_names,
+  sizeof(netbsd_error_names) / sizeof(netbsd_error_names[0]),
+  netbsd_signal_names,
+  sizeof(netbsd_signal_names) / sizeof(netbsd_signal_names[0]),
+};
+
+#endif /* _EMUL_NETBSD_C_ */