Added base version of file system infrastructure. This includes a major

overhaul of the RTEMS system call interface.  This base file system is
the "In-Memory File System" aka IMFS.

The design and implementation was done by the following people:

  + Joel Sherrill (joel@OARcorp.com)
  + Jennifer Averett (jennifer@OARcorp.com)
  + Steve "Mr Mount" Salitasc (salitasc@OARcorp.com)
  + Kerwin Wade (wade@OARcorp.com)

PROBLEMS
========
  + It is VERY likely that merging this will break the UNIX port.  This
    can/will be fixed.

  + There is likely some reentrancy/mutual exclusion needed.

  + Eventually, there should be a "mini-IMFS" description table to
    eliminate links, symlinks, etc to save memory.  All you need to
    have "classic RTEMS" functionality is technically directories
    and device IO.  All the rest could be left out to save memory.

1 files changed, 65 insertions, 13 deletions

diff --git a/cpukit/libcsupport/src/newlibc.c b/cpukit/libcsupport/src/newlibc.c
index a6acc1c8d7..bea592a46e 100644
--- a/cpukit/libcsupport/src/newlibc.c
+++ b/cpukit/libcsupport/src/newlibc.c
@@ -1,21 +1,14 @@
-
 /*
+ *  Implementation of hooks for the CYGNUS newlib libc
+ *  These hooks set things up so that:
+ *       + '_REENT' is switched at task switch time.
+ *
  *  COPYRIGHT (c) 1994 by Division Incorporated
  *
  *  The license and distribution terms for this file may be
  *  found in the file LICENSE in this distribution or at
  *  http://www.OARcorp.com/rtems/license.html.
  *
- *  Description:
- *      Implementation of hooks for the CYGNUS newlib libc
- *      These hooks set things up so that:
- *              '_REENT' is switched at task switch time.
- *
- *
- *  TODO:
- *
- *  NOTE:
- *
  *  $Id$
  *
  */
@@ -47,7 +40,21 @@
 #include <stdio.h>
 #endif
 
-#include "internal.h"
+/*
+ *  Private routines
+ */
+
+void MY_task_set_note(
+  rtems_tcb        *tcb,
+  rtems_unsigned32 notepad,
+  rtems_unsigned32 note
+);
+
+rtems_unsigned32 MY_task_get_note(
+  rtems_tcb        *tcb,
+  rtems_unsigned32  notepad
+);
+
 
 #define LIBC_NOTEPAD RTEMS_NOTEPAD_LAST
 
@@ -304,7 +311,7 @@ libc_init(int reentrant)
         rc = rtems_extension_create(rtems_build_name('L', 'I', 'B', 'C'),
                               &libc_extension, &extension_id);
         if (rc != RTEMS_SUCCESSFUL)
-            rtems_fatal_error_occurred(rc);
+            rtems_fatal_error_occurred( rc );
 
         libc_reentrant = reentrant;
     }
@@ -353,11 +360,14 @@ int get_errno()
 
 /* #if !defined(RTEMS_UNIX) && !defined(__GO32__) && !defined(_AM29K) */
 #if !defined(RTEMS_UNIX) && !defined(_AM29K)
+#if !defined(pc386)
 void _exit(int status)
 {
     libc_wrapup(); /* Why? XXX */
     rtems_shutdown_executive(status);
 }
+#endif
+
 #else
 
 void exit(int status)
@@ -426,4 +436,46 @@ unsigned int sleep(
 #endif
 
 
+/*
+ *  Newlib Interface Support
+ *
+ *  Routines to Access Internal RTEMS Resources without violating
+ *  kernel visibility.
+ *
+ */
+
+void MY_task_set_note(
+  Thread_Control *the_thread,
+  unsigned32      notepad,
+  unsigned32      note
+)
+{
+  RTEMS_API_Control    *api;
+ 
+  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
+
+  if ( api )
+    api->Notepads[ notepad ] = note;
+}
+
+
+unsigned32 MY_task_get_note(
+  Thread_Control *the_thread,
+  unsigned32      notepad
+)
+{
+  RTEMS_API_Control    *api;
+ 
+  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
+
+  return api->Notepads[ notepad ];
+}
+
+void *MY_CPU_Context_FP_start(
+  void       *base,
+  unsigned32  offset
+)
+{
+  return _CPU_Context_Fp_start( base, offset );
+}
 #endif