* callback.c: #include <stdlib.h>

	(os_error): New function.
	(default_callback): Add os_error.

2 files changed, 459 insertions, 0 deletions

diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index de13851..7cfaf1e 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,40 @@
+Sun Dec  8 18:22:06 1996  Doug Evans  <dje@canuck.cygnus.com>
+
+	* callback.c: #include <stdlib.h>
+	(os_error): New function.
+	(default_callback): Add os_error.
+
+Mon Nov 25 19:44:35 1996  Doug Evans  <dje@canuck.cygnus.com>
+
+	* Make-common.in (Makefile): Set CONFIG_HEADERS="".
+	* aclocal.m4: Mark the fact that --enable-sim-bswap isn't host
+	specific.
+	(SIM_AC_OUTPUT): Don't build Makefile if CONFIG_FILES="".
+
+Wed Nov 20 01:11:04 1996  Doug Evans  <dje@canuck.cygnus.com>
+
+	* run.c: #include ../common/config.h, tconfig.h.
+	(myname): New static global.
+	(main): Recognize new options -a, -c.  Also recognize -h if h8/300.
+	Only process -c ifdef SIM_HAVE_SIMCACHE.
+	Only process -p/-s ifdef SIM_HAVE_PROFILE.
+	Parse program name from argv[0] and use in error messages.
+	Pass sim_args to sim_open.  Pass prog_args to sim_create_inferior.
+	Add support for incomplete h8/300 termination indicators.
+	(usage): Make more verbose.
+	* aclocal.m4,config.in,tconfig.in,configure.in,configure: New files.
+	* Makefile.in,Make-common.in,callback.c: New files.
+	* nltvals.def,gentmap.c,gentvals.sh: New files.
+
+Tue Nov 12 13:34:00 1996  Dawn Perchik  <dawn@cygnus.com>   
+
+	* run.c: Include stdarg.h if __STDC__.
+
+Tue Oct 15 11:16:31 1996  Jeffrey A Law  (law@cygnus.com)
+
+	* run.c (main): Don't print out anything if the signal
+	number is zero (ie no signal).
+
 Tue Oct 15 11:20:44 1996  Michael Meissner  <meissner@tiktok.cygnus.com>
 
 	* run.c (main): Print out if the program raised a signal.
diff --git a/sim/common/callback.c b/sim/common/callback.c
new file mode 100644
index 0000000..764d4b6
--- /dev/null
+++ b/sim/common/callback.c
@@ -0,0 +1,422 @@
+/* Host callback routines for GDB.
+   Copyright 1995, 1996 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+   This file is part of GDB.
+
+   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.  */
+
+/* This file provides a standard way for targets to talk to the host OS
+   level.  */
+
+#include "ansidecl.h"
+#ifdef ANSI_PROTOTYPES
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <time.h>
+#include "callback.h"
+#include "targ-vals.h"
+
+static int os_init PARAMS ((host_callback *));
+static int os_shutdown PARAMS ((host_callback *));
+static int os_unlink PARAMS ((host_callback *, const char *));
+static long os_time PARAMS ((host_callback *, long *));
+static int os_system PARAMS ((host_callback *, const char *));
+static int os_rename PARAMS ((host_callback *, const char *, const char *));
+static int os_write_stdout PARAMS ((host_callback *, const char *, int));
+static int os_write PARAMS ((host_callback *, int, const char *, int));
+static int os_read_stdin PARAMS ((host_callback *, char *, int));
+static int os_read PARAMS ((host_callback *, int, char *, int));
+static int os_open PARAMS ((host_callback *, const char *, int));
+static int os_lseek PARAMS ((host_callback *, int, long, int));
+static int os_isatty PARAMS ((host_callback *, int));
+static int os_get_errno PARAMS ((host_callback *));
+static int os_close PARAMS ((host_callback *, int));
+static int fdmap PARAMS ((host_callback *, int));
+static int fdbad PARAMS ((host_callback *, int));
+static int wrap PARAMS ((host_callback *, int));
+
+/* Set the callback copy of errno from what we see now.  */
+
+static int 
+wrap (p, val)
+     host_callback *p;
+     int val;
+{
+  p->last_errno = errno;
+  return val;
+}
+
+/* Make sure the FD provided is ok.  If not, return non-zero
+   and set errno. */
+
+static int 
+fdbad (p, fd)
+     host_callback *p;
+     int fd;
+{
+  if (fd < 0 || fd > MAX_CALLBACK_FDS || !p->fdopen[fd])
+    {
+      p->last_errno = EINVAL;
+      return -1;
+    }
+  return 0;
+}
+
+static int 
+fdmap (p, fd)
+     host_callback *p;
+     int fd;
+{
+  return p->fdmap[fd];
+}
+
+static int 
+os_close (p, fd)
+     host_callback *p;
+     int fd;
+{
+  int result;
+
+  result = fdbad (p, fd);
+  if (result)
+    return result;
+  result = wrap (p, close (fdmap (p, fd)));
+  return result;
+}
+
+static int 
+os_get_errno (p)
+     host_callback *p;
+{
+  return host_to_target_errno (p->last_errno);
+}
+
+
+static int 
+os_isatty (p, fd)
+     host_callback *p;
+     int fd;
+{
+  int result;
+
+  result = fdbad (p, fd);
+  if (result)
+    return result;
+  result = wrap (p, isatty (fdmap (p, fd)));
+  return result;
+}
+
+static int 
+os_lseek (p, fd, off, way)
+     host_callback *p;
+     int fd;
+     long off;
+     int way;
+{
+  int result;
+
+  result = fdbad (p, fd);
+  if (result)
+    return result;
+  result = lseek (fdmap (p, fd), off, way);
+  return result;
+}
+
+static int 
+os_open (p, name, flags)
+     host_callback *p;
+     const char *name;
+     int flags;
+{
+  int i;
+  for (i = 0; i < MAX_CALLBACK_FDS; i++)
+    {
+      if (!p->fdopen[i])
+	{
+	  int f = open (name, target_to_host_open (flags));
+	  if (f < 0)
+	    {
+	      p->last_errno = errno;
+	      return f;
+	    }
+	  p->fdopen[i] = 1;
+	  p->fdmap[i] = f;
+	  return i;
+	}
+    }
+  p->last_errno = EMFILE;
+  return -1;
+}
+
+static int 
+os_read (p, fd, buf, len)
+     host_callback *p;
+     int fd;
+     char *buf;
+     int len;
+{
+  int result;
+
+  result = fdbad (p, fd);
+  if (result)
+    return result;
+  result = wrap (p, read (fdmap (p, fd), buf, len));
+  return result;
+}
+
+static int 
+os_read_stdin (p, buf, len)
+     host_callback *p;
+     char *buf;
+     int len;
+{
+  return wrap (p, read (0, buf, len));
+}
+
+static int 
+os_write (p, fd, buf, len)
+     host_callback *p;
+     int fd;
+     const char *buf;
+     int len;
+{
+  int result;
+
+  result = fdbad (p, fd);
+  if (result)
+    return result;
+  result = wrap (p, write (fdmap (p, fd), buf, len));
+  return result;
+}
+
+static int 
+os_write_stdout (p, buf, len)
+     host_callback *p;
+     const char *buf;
+     int len;
+{
+  return os_write (p, 1, buf, len);
+}
+
+static int 
+os_rename (p, f1, f2)
+     host_callback *p;
+     const char *f1;
+     const char *f2;
+{
+  return wrap (p, rename (f1, f2));
+}
+
+
+static int
+os_system (p, s)
+     host_callback *p;
+     const char *s;
+{
+  return wrap (p, system (s));
+}
+
+static long 
+os_time (p, t)
+     host_callback *p;
+     long *t;
+{
+  return wrap (p, time (t));
+}
+
+
+static int 
+os_unlink (p, f1)
+     host_callback *p;
+     const char *f1;
+{
+  return wrap (p, unlink (f1));
+}
+
+
+static int
+os_shutdown (p)
+     host_callback *p;
+{
+  int i;
+  for (i = 0; i < MAX_CALLBACK_FDS; i++)
+    {
+      if (p->fdopen[i] && !p->alwaysopen[i]) {
+	close (p->fdmap[i]);
+	p->fdopen[i] = 0;
+      }
+    }
+  return 1;
+}
+
+static int
+os_init(p)
+     host_callback *p;
+{
+  int i;
+  os_shutdown (p);
+  for (i= 0; i < 3; i++)
+    {
+      p->fdmap[i] = i;
+      p->fdopen[i] = 1;
+      p->alwaysopen[i] = 1;
+    }
+  return 1;
+}
+
+/* VARARGS */
+static void
+#ifdef ANSI_PROTOTYPES
+os_printf_filtered (host_callback *p, const char *format, ...)
+#else
+os_printf_filtered (p, va_alist)
+     host_callback *p;
+     va_dcl
+#endif
+{
+  va_list args;
+#ifdef ANSI_PROTOTYPES
+  va_start (args, format);
+#else
+  char *format;
+
+  va_start (args);
+  format = va_arg (args, char *);
+#endif
+
+  vprintf (format, args);
+
+  va_end (args);
+}
+
+/* VARARGS */
+static void
+#ifdef ANSI_PROTOTYPES
+os_error (host_callback *p, const char *format, ...)
+#else
+os_error (p, va_alist)
+     host_callback *p;
+     va_dcl
+#endif
+{
+  va_list args;
+#ifdef ANSI_PROTOTYPES
+  va_start (args, format);
+#else
+  char *format;
+
+  va_start (args);
+  format = va_arg (args, char *);
+#endif
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+  exit (EXIT_FAILURE);
+}
+
+host_callback default_callback =
+{
+  os_close,
+  os_get_errno,
+  os_isatty,
+  os_lseek,
+  os_open,
+  os_read,
+  os_read_stdin,
+  os_rename,
+  os_system,
+  os_time,
+  os_unlink,
+  os_write,
+  os_write_stdout,
+
+  os_shutdown,
+  os_init,
+
+  os_printf_filtered,
+  os_error,
+
+  0, 		/* last errno */
+};
+
+/* FIXME: Need to add hooks so target can tweak as necessary.  */
+
+/* FIXME: struct stat conversion is missing.  */
+
+/* FIXME: sort tables if large.
+   Alternatively, an obvious improvement for errno conversion is
+   to machine generate a function with a large switch().  */
+
+int
+host_to_target_errno (host_val)
+     int host_val;
+{
+  target_defs_map *m;
+
+  for (m = &errno_map[0]; m->host_val; ++m)
+    if (m->host_val == host_val)
+      return m->target_val;
+
+  /* ??? Which error to return in this case is up for grabs.
+     Note that some missing values may have standard alternatives.
+     For now return 0 and require caller to deal with it.  */
+  return 0;
+}
+
+/* Given a set of target bitmasks for the open system call,
+   return the host equivalent.
+   Mapping open flag values is best done by looping so there's no need
+   to machine generate this function.  */
+
+int
+target_to_host_open (target_val)
+     int target_val;
+{
+  int host_val = 0;
+  target_defs_map *m;
+
+  for (m = &open_map[0]; m->host_val != -1; ++m)
+    {
+      switch (m->target_val)
+	{
+	  /* O_RDONLY can be (and usually is) 0 which needs to be treated
+	     specially.  */
+	case TARGET_O_RDONLY :
+	case TARGET_O_WRONLY :
+	case TARGET_O_RDWR :
+	  if ((target_val & (TARGET_O_RDONLY | TARGET_O_WRONLY | TARGET_O_RDWR))
+	      == m->target_val)
+	    host_val |= m->host_val;
+	  break;
+	default :
+	  if ((m->target_val & target_val) == m->target_val)
+	    host_val |= m->host_val;
+	  break;
+	}
+    }
+
+  return host_val;
+}