source: rtems/c/src/lib/libcpu/powerpc/mpc8xx/exceptions/raw_exception.h @ 73b5bd5d

4.104.114.84.95
Last change on this file since 73b5bd5d was 73b5bd5d, checked in by Ralf Corsepius <ralf.corsepius@…>, on Apr 15, 2004 at 1:33:58 PM

Remove stray white spaces.

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1/*
2 * raw_execption.h
3 *
4 *          This file contains implementation of C function to
5 *          Instanciate 8xx ppc primary exception entries.
6 *          More detailled information can be found on motorola
7 *          site and more precisely in the following book :
8 *
9 *              MPC860
10 *              Risc Microporcessor User's Manual
11 *              Motorola REF : MPC860UM/AD 07/98 Rev .1
12 *
13 * Copyright (C) 1999  Eric Valette (valette@crf.canon.fr)
14 *                     Canon Centre Recherche France.
15 *
16 *  The license and distribution terms for this file may be
17 *  found in found in the file LICENSE in this distribution or at
18 *  http://www.rtems.com/license/LICENSE.
19 *
20 * $Id$
21 */
22
23#ifndef _LIBCPU_MPC8XX_EXCEPTION_RAW_EXCEPTION_H
24#define _LIBCPU_MPC8XX_EXCEPTION_RAW_EXCEPTION_H
25
26/*
27 * Exception Vectors as defined in the MCP750 manual
28 */
29
30#define ASM_RESET_VECTOR        0x01
31#define ASM_MACH_VECTOR         0x02
32#define ASM_PROT_VECTOR         0x03
33#define ASM_ISI_VECTOR          0x04
34#define ASM_EXT_VECTOR          0x05
35#define ASM_ALIGN_VECTOR        0x06
36#define ASM_PROG_VECTOR         0x07
37#define ASM_FLOAT_VECTOR        0x08
38#define ASM_DEC_VECTOR          0x09
39
40#define ASM_SYS_VECTOR          0x0C
41#define ASM_TRACE_VECTOR        0x0D
42#define ASM_FLOATASSIST_VECTOR  0x0E
43
44#define ASM_SOFTEMUL_VECTOR     0x10
45#define ASM_ITLBMISS_VECTOR     0x11
46#define ASM_DTLBMISS_VECTOR     0x12
47#define ASM_ITLBERROR_VECTOR    0x13
48#define ASM_DTLBERROR_VECTOR    0x14
49
50#define ASM_DBREAK_VECTOR       0x1C
51#define ASM_IBREAK_VECTOR       0x1D
52#define ASM_PERIFBREAK_VECTOR   0x1E
53#define ASM_DEVPORT_VECTOR      0x1F
54
55#define LAST_VALID_EXC          ASM_DEVPORT_VECTOR
56
57/*
58 * Vector offsets as defined in the MPC860 manual
59 */
60
61#define ASM_RESET_VECTOR_OFFSET         (ASM_RESET_VECTOR << 8)
62#define ASM_MACH_VECTOR_OFFSET          (ASM_MACH_VECTOR  << 8)
63#define ASM_PROT_VECTOR_OFFSET          (ASM_PROT_VECTOR  << 8)
64#define ASM_ISI_VECTOR_OFFSET           (ASM_ISI_VECTOR   << 8)
65#define ASM_EXT_VECTOR_OFFSET           (ASM_EXT_VECTOR   << 8)
66#define ASM_ALIGN_VECTOR_OFFSET         (ASM_ALIGN_VECTOR << 8)
67#define ASM_PROG_VECTOR_OFFSET          (ASM_PROG_VECTOR  << 8)
68#define ASM_FLOAT_VECTOR_OFFSET         (ASM_FLOAT_VECTOR << 8)
69#define ASM_DEC_VECTOR_OFFSET           (ASM_DEC_VECTOR   << 8)
70
71#define ASM_SYS_VECTOR_OFFSET           (ASM_SYS_VECTOR   << 8)
72#define ASM_TRACE_VECTOR_OFFSET         (ASM_TRACE_VECTOR << 8)
73#define ASM_FLOATASSIST_VECTOR_OFFSET   (ASM_FLOATASSIST_VECTOR << 8)
74
75#define ASM_SOFTEMUL_VECTOR_OFFSET      (ASM_SOFTEMUL_VECTOR << 8)
76#define ASM_ITLBMISS_VECTOR_OFFSET      (ASM_ITLBMISS_VECTOR << 8)
77#define ASM_DTLBMISS_VECTOR_OFFSET      (ASM_DTLBMISS_VECTOR << 8)
78#define ASM_ITLBERROR_VECTOR_OFFSET     (ASM_ITLBERROR_VECTOR << 8)
79#define ASM_DTLBERROR_VECTOR_OFFSET     (ASM_DTLBERROR_VECTOR << 8)
80
81#define ASM_DBREAK_VECTOR_OFFSET        (ASM_DBREAK_VECTOR << 8)
82#define ASM_IBREAK_VECTOR_OFFSET        (ASM_IBREAK_VECTOR << 8)
83#define ASM_PERIFBREAK_VECTOR_OFFSET    (ASM_PERIFBREAK_VECTOR << 8)
84#define ASM_DEVPORT_VECTOR_OFFSET       (ASM_DEVPORT_VECTOR_OFFSET << 8)
85
86#ifndef ASM
87
88/*
89 * Type definition for raw exceptions.
90 */
91
92typedef unsigned char  rtems_vector;
93struct  __rtems_raw_except_connect_data__;
94typedef void            (*rtems_raw_except_func)                (void);
95typedef unsigned char   rtems_raw_except_hdl_size;
96
97typedef struct {
98  rtems_vector                  vector;
99  rtems_raw_except_func         raw_hdl;
100  rtems_raw_except_hdl_size     raw_hdl_size;
101}rtems_raw_except_hdl;
102 
103typedef void (*rtems_raw_except_enable)         (const struct __rtems_raw_except_connect_data__*);
104typedef void (*rtems_raw_except_disable)        (const struct __rtems_raw_except_connect_data__*);
105typedef int  (*rtems_raw_except_is_enabled)     (const struct __rtems_raw_except_connect_data__*);
106
107typedef struct __rtems_raw_except_connect_data__{
108 /*
109  * Exception vector (As defined in the manual)
110  */
111  rtems_vector                  exceptIndex;
112  /*
113   * Exception raw handler. See comment on handler properties below in function prototype.
114   */
115  rtems_raw_except_hdl          hdl;
116  /*
117   * function for enabling raw exceptions. In order to be consistent
118   * with the fact that the raw connexion can defined in the
119   * libcpu library, this library should have no knowledge of
120   * board specific hardware to manage exceptions and thus the
121   * "on" routine must enable the except at processor level only.
122   *
123   */
124    rtems_raw_except_enable     on;     
125  /*
126   * function for disabling raw exceptions. In order to be consistent
127   * with the fact that the raw connexion can defined in the
128   * libcpu library, this library should have no knowledge of
129   * board specific hardware to manage exceptions and thus the
130   * "on" routine must disable the except both at device and PIC level.
131   *
132   */
133  rtems_raw_except_disable      off;
134  /*
135   * function enabling to know what exception may currently occur
136   */
137  rtems_raw_except_is_enabled   isOn;
138}rtems_raw_except_connect_data;
139
140typedef struct {
141  /*
142   * size of all the table fields (*Tbl) described below.
143   */
144  unsigned int                          exceptSize;
145  /*
146   * Default handler used when disconnecting exceptions.
147   */
148  rtems_raw_except_connect_data         defaultRawEntry;
149  /*
150   * Table containing initials/current value.
151   */
152  rtems_raw_except_connect_data*        rawExceptHdlTbl;
153}rtems_raw_except_global_settings;
154
155/*
156 * C callable function enabling to set up one raw idt entry
157 */
158extern int mpc8xx_set_exception (const rtems_raw_except_connect_data*);
159
160/*
161 * C callable function enabling to get one current raw idt entry
162 */
163extern int mpc8xx_get_current_exception (rtems_raw_except_connect_data*);
164
165/*
166 * C callable function enabling to remove one current raw idt entry
167 */
168extern int mpc8xx_delete_exception (const rtems_raw_except_connect_data*);
169
170/*
171 * C callable function enabling to check if vector is valid
172 */
173extern int mpc8xx_vector_is_valid(rtems_vector vector);
174
175inline static  void* mpc8xx_get_vector_addr(rtems_vector vector)
176{
177  return ((void*)  (((unsigned) vector) << 8));
178}
179/*
180 * Exception global init.
181 */
182extern int mpc8xx_init_exceptions (rtems_raw_except_global_settings* config);
183extern int mpc8xx_get_exception_config (rtems_raw_except_global_settings** config);
184
185# endif /* ASM */
186
187#endif
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