2002-03-28 Ralf Corsepius <corsepiu@faw.uni-ulm.de>

	* tbr/Makefile.am: New file.
	* tbr/.cvsignore: New file.
	* tbr/tbr.c: New file.
	* tbr/tbr.h: New file.
	* configure.ac: Add tbr subdir.
	* Makefile.am: Add tbr subdir.

1 files changed, 40 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/sparc/tbr/tbr.h b/c/src/lib/libcpu/sparc/tbr/tbr.h
new file mode 100644
index 0000000000..45ffed28bd
--- /dev/null
+++ b/c/src/lib/libcpu/sparc/tbr/tbr.h
@@ -0,0 +1,40 @@
+/*
+ *  SPARC Dependent Source
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+
+/*
+ *  This is the executive's trap table which is installed into the TBR
+ *  register.
+ *
+ *  NOTE:  Unfortunately, this must be aligned on a 4096 byte boundary.
+ *         The GNU tools as of binutils 2.5.2 and gcc 2.7.0 would not
+ *         align an entity to anything greater than a 512 byte boundary.
+ *
+ *         Because of this, we pull a little bit of a trick.  We allocate
+ *         enough memory so we can grab an address on a 4096 byte boundary
+ *         from this area.
+ */
+
+#ifndef _libcpu_tbr_h
+#define _libcpu_tbr_h
+
+#include <bsp.h>
+
+#ifndef NO_TABLE_MOVE
+
+#define SPARC_TRAP_TABLE_ALIGNMENT 4096
+
+SCORE_EXTERN unsigned8 _CPU_Trap_Table_area[8192]
+  __attribute__ ((aligned (SPARC_TRAP_TABLE_ALIGNMENT)));
+#endif
+
+#endif