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/*
* raw_execption.h
*
* This file contains implementation of C function to
* Instantiate mpc5xx primary exception entries.
* More detailled information can be found on the Motorola
* site and more precisely in the following book:
*
* MPC555/MPC556 User's Manual
* Motorola REF : MPC555UM/D Rev. 3, 2000 October 15
*
*
* MPC5xx port sponsored by Defence Research and Development Canada - Suffield
* Copyright (C) 2004, Real-Time Systems Inc. (querbach@realtime.bc.ca)
*
* Derived from libcpu/powerpc/mpc8xx/exceptions/raw_exception.h:
*
* Copyright (C) 1999 Eric Valette (valette@crf.canon.fr)
* Canon Centre Recherche France.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _LIBCPU_RAW_EXCEPTION_H
#define _LIBCPU_RAW_EXCEPTION_H
#include <libcpu/vectors.h>
/*
* Exception Vectors as defined in the MPC555 User's Manual
*/
#define ASM_RESET_VECTOR 0x01
#define ASM_MACH_VECTOR 0x02
#define ASM_EXT_VECTOR 0x05
#define ASM_ALIGN_VECTOR 0x06
#define ASM_PROG_VECTOR 0x07
#define ASM_FLOAT_VECTOR 0x08
#define ASM_DEC_VECTOR 0x09
#define ASM_SYS_VECTOR 0x0C
#define ASM_TRACE_VECTOR 0x0D
#define ASM_FLOATASSIST_VECTOR 0x0E
#define ASM_SOFTEMUL_VECTOR 0x10
#define ASM_IPROT_VECTOR 0x13
#define ASM_DPROT_VECTOR 0x14
#define ASM_DBREAK_VECTOR 0x1C
#define ASM_IBREAK_VECTOR 0x1D
#define ASM_MEBREAK_VECTOR 0x1E
#define ASM_NMEBREAK_VECTOR 0x1F
#define LAST_VALID_EXC ASM_NMEBREAK_VECTOR
#ifndef ASM
/*
* Type definition for raw exceptions.
*/
typedef unsigned char rtems_vector;
struct __rtems_raw_except_connect_data__;
typedef unsigned char rtems_raw_except_hdl_size;
typedef struct {
rtems_vector vector;
rtems_exception_handler_t* raw_hdl;
}rtems_raw_except_hdl;
typedef void (*rtems_raw_except_enable) (const struct __rtems_raw_except_connect_data__*);
typedef void (*rtems_raw_except_disable) (const struct __rtems_raw_except_connect_data__*);
typedef int (*rtems_raw_except_is_enabled) (const struct __rtems_raw_except_connect_data__*);
typedef struct __rtems_raw_except_connect_data__{
/*
* Exception vector (As defined in the manual)
*/
rtems_vector exceptIndex;
/*
* Exception raw handler. See comment on handler properties below in function prototype.
*/
rtems_raw_except_hdl hdl;
/*
* function for enabling raw exceptions. In order to be consistent
* with the fact that the raw connexion can defined in the
* libcpu library, this library should have no knowledge of
* board specific hardware to manage exceptions and thus the
* "on" routine must enable the except at processor level only.
*
*/
rtems_raw_except_enable on;
/*
* function for disabling raw exceptions. In order to be consistent
* with the fact that the raw connexion can defined in the
* libcpu library, this library should have no knowledge of
* board specific hardware to manage exceptions and thus the
* "on" routine must disable the except both at device and PIC level.
*
*/
rtems_raw_except_disable off;
/*
* function enabling to know what exception may currently occur
*/
rtems_raw_except_is_enabled isOn;
}rtems_raw_except_connect_data;
typedef struct {
/*
* size of all the table fields (*Tbl) described below.
*/
unsigned int exceptSize;
/*
* Default handler used when disconnecting exceptions.
*/
rtems_raw_except_connect_data defaultRawEntry;
/*
* Table containing initials/current value.
*/
rtems_raw_except_connect_data* rawExceptHdlTbl;
}rtems_raw_except_global_settings;
/*
* C callable function enabling to set up one raw idt entry
*/
extern int mpc5xx_set_exception (const rtems_raw_except_connect_data*);
/*
* C callable function enabling to get one current raw idt entry
*/
extern int mpc5xx_get_current_exception (rtems_raw_except_connect_data*);
/*
* C callable function enabling to remove one current raw idt entry
*/
extern int mpc5xx_delete_exception (const rtems_raw_except_connect_data*);
/*
* C callable function enabling to check if vector is valid
*/
extern int mpc5xx_vector_is_valid(rtems_vector vector);
inline static void* mpc5xx_get_vector_addr(rtems_vector vector)
{
return ((void*) (((unsigned) vector) << 8));
}
/*
* Exception global init.
*/
extern int mpc5xx_init_exceptions (rtems_raw_except_global_settings* config);
extern int mpc5xx_get_exception_config (rtems_raw_except_global_settings** config);
# endif /* ASM */
#define SIZEOF_
#endif
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