Initial revision

1 files changed, 243 insertions, 0 deletions

diff --git a/boot/ux.c b/boot/ux.c
new file mode 100644
index 00000000..46e2f130
--- /dev/null
+++ b/boot/ux.c
@@ -0,0 +1,243 @@
+/* Hacks to make boot work under UX
+
+   Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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, or (at your option)
+   any later version.
+
+   The GNU Hurd 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 the GNU Hurd; see the file COPYING.  If not, write to
+   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <mach.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <cthreads.h>
+
+#include "ux.h"
+
+extern void __mach_init ();
+void	(*mach_init_routine)() = __mach_init;
+
+/* These will prevent the Hurd-ish versions from being used */
+
+struct free_reply_port
+{
+  mach_port_t port;
+  struct free_reply_port *next;
+};
+static struct free_reply_port *free_reply_ports = NULL;
+static spin_lock_t free_reply_ports_lock = SPIN_LOCK_INITIALIZER;
+
+mach_port_t __mig_get_reply_port ()
+{
+  spin_lock (&free_reply_ports_lock);
+  if (free_reply_ports == NULL)
+    {
+      spin_unlock (&free_reply_ports_lock);
+      return __mach_reply_port ();
+    }
+  else
+    {
+      struct free_reply_port *frp = free_reply_ports;
+      mach_port_t reply_port = frp->port;
+      free_reply_ports = free_reply_ports->next;
+      spin_unlock (&free_reply_ports_lock);
+      free (frp);
+      return reply_port;
+    }
+}
+mach_port_t mig_get_reply_port ()
+{
+  return __mig_get_reply_port ();
+}
+void __mig_put_reply_port (mach_port_t port)
+{
+  struct free_reply_port *frp = malloc (sizeof (struct free_reply_port));
+  frp->port = port;
+  spin_lock (&free_reply_ports_lock);
+  frp->next = free_reply_ports;
+  free_reply_ports = frp;
+  spin_unlock (&free_reply_ports_lock);
+}
+void mig_put_reply_port (mach_port_t port)
+{
+  __mig_put_reply_port (port);
+}
+void __mig_dealloc_reply_port (mach_port_t port)
+{
+  mach_port_mod_refs (__mach_task_self (), port,
+		      MACH_PORT_RIGHT_RECEIVE, -1);
+}
+void mig_dealloc_reply_port (mach_port_t port)
+{
+  __mig_dealloc_reply_port (port);
+}
+void __mig_init (void *stack) {}
+void mig_init (void *stack) {}
+
+int
+task_by_pid (int pid)
+{
+  return syscall (-33, pid);
+}
+
+int
+write (int fd,
+       const void *buf,
+       int buflen)
+{
+  return syscall (4, fd, buf, buflen);
+}
+
+int
+read (int fd,
+      void *buf,
+      int buflen)
+{
+  return syscall (3, fd, buf, buflen);
+}
+
+int
+open (const char *name,
+      int flags,
+      int mode)
+{
+  return syscall (5, name, flags, mode);
+}
+
+int
+uxfstat (int fd, struct uxstat *buf)
+{
+  return syscall (62, fd, buf);
+}
+
+int
+close (int fd)
+{
+  return syscall (6, fd);
+}
+
+int
+lseek (int fd,
+       int off,
+       int whence)
+{
+  return syscall (19, fd, off, whence);
+}
+
+int
+uxexit (int code)
+{
+  return syscall (1, code);
+}
+
+int
+getpid ()
+{
+  return syscall (20);
+}
+
+int
+ioctl (int fd, int code, void *buf)
+{
+  return syscall (54, fd, code, buf);
+}
+
+int
+sigblock (int mask)
+{
+  return syscall (109, mask);
+}
+
+int
+sigsetmask (int mask)
+{
+  return syscall (110, mask);
+}
+
+int
+sigpause (int mask)
+{
+  return syscall (111, mask);
+}
+
+
+#if 0
+void
+sigreturn ()
+{
+  asm volatile ("movl $0x67,%eax\n"
+		"lcall $0x7, $0x0\n"
+		"ret");
+}
+
+void
+_sigreturn ()
+{
+  asm volatile ("addl $0xc, %%esp\n"
+		"call %0\n"
+		"ret"::"m" (sigreturn));
+}
+
+int
+sigvec (int sig, struct sigvec *vec, struct sigvec *ovec)
+{
+  asm volatile ("movl $0x6c,%%eax\n"
+		"movl %0, %%edx\n"
+		"orl $0x80000000, %%edx\n"
+		"lcall $0x7,$0x0\n"
+		"ret"::"g" (_sigreturn));
+}
+#else
+int sigvec ();
+#endif
+
+void get_privileged_ports (mach_port_t *host_port, mach_port_t *device_port)
+{
+  *host_port = task_by_pid (-1);
+  *device_port = task_by_pid (-2);
+}
+
+/* A *really* stupid printf that only understands %s.  */
+int
+printf (const char *fmt, ...)
+{
+  va_list ap;
+  const char *p = fmt, *q = p;
+
+  void flush (const char *new)
+    {
+      if (p > q)
+	write (1, q, p - q);
+      q = p = new;
+    }
+
+  va_start (ap, fmt);
+  while (*p)
+    if (*p == '%' && p[1] == 's')
+      {
+	char *str = va_arg (ap, char *);
+	flush (p + 2);
+	write (1, str, strlen (str));
+      }
+    else
+      p++;
+  va_end (ap);
+
+  flush (0);
+
+  return 0;
+}