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

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* tbr/Makefile.am: Remove.
	* tbr/.cvsignore: Remove.
	* tbr/tbr.c: Remove.
	* tbr/tbr.h: Remove.
	* configure.ac: Remove tbr subdir.
	* Makefile.am: Remove tbr subdir.
This commit is contained in:
Joel Sherrill
2002-04-12 16:31:59 +00:00
parent 231fccb299
commit fc8685dafc
4 changed files with 0 additions and 123 deletions
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2
c/src/lib/libcpu/sparc/tbr/.cvsignore
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Makefile
Makefile.in

31
c/src/lib/libcpu/sparc/tbr/Makefile.am
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##
## $Id$
##
C_FILES = tbr.c
C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o)
include_libcpudir = $(includedir)/libcpu
include_libcpu_HEADERS = tbr.h
OBJS = $(C_O_FILES)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/compile.am
include $(top_srcdir)/../../../../../automake/lib.am
$(PROJECT_INCLUDE)/libcpu:
$(mkinstalldirs) $@
$(PROJECT_INCLUDE)/libcpu/%.h: %.h
$(INSTALL_DATA) $< $@
PREINSTALL_FILES = $(PROJECT_INCLUDE)/libcpu \
$(include_libcpu_HEADERS:%=$(PROJECT_INCLUDE)/libcpu/%)
all-local: $(ARCH) $(PREINSTALL_FILES) $(OBJS)
EXTRA_DIST = tbr.c
include $(top_srcdir)/../../../../../automake/local.am

50
c/src/lib/libcpu/sparc/tbr/tbr.c
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/*
* 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.
*
* $Id$
*/
#include <libcpu/tbr.h>
void
sparc_init_tbr ()
{
#ifndef NO_TABLE_MOVE
unsigned32 trap_table_start;
unsigned32 tbr_value;
CPU_Trap_table_entry *old_tbr;
CPU_Trap_table_entry *trap_table;
/*
* Install the executive's trap table. All entries from the original
* trap table are copied into the executive's trap table. This is essential
* since this preserves critical trap handlers such as the window underflow
* and overflow handlers. It is the responsibility of the BSP to provide
* install these in the initial trap table.
*/
trap_table_start = (unsigned32) & _CPU_Trap_Table_area;
if (trap_table_start & (SPARC_TRAP_TABLE_ALIGNMENT - 1))
trap_table_start = (trap_table_start + SPARC_TRAP_TABLE_ALIGNMENT) &
~(SPARC_TRAP_TABLE_ALIGNMENT - 1);
trap_table = (CPU_Trap_table_entry *) trap_table_start;
sparc_get_tbr (tbr_value);
old_tbr = (CPU_Trap_table_entry *) (tbr_value & 0xfffff000);
memcpy (trap_table, (void *) old_tbr, 256 * sizeof (CPU_Trap_table_entry));
sparc_set_tbr (trap_table_start);
#endif
}

40
c/src/lib/libcpu/sparc/tbr/tbr.h
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/*
* 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