source: rtems/c/src/lib/libbsp/powerpc/mpc8260ads/vectors/vectors_init.c @ 3dc0d74d

4.104.114.95
Last change on this file since 3dc0d74d was 3dc0d74d, checked in by Ralf Corsepius <ralf.corsepius@…>, on 08/20/08 at 05:30:36

Add missing prototypes.

  • Property mode set to 100644
File size: 4.6 KB
Line 
1/*
2 * vectors_init.c Exception hanlding initialisation (and generic handler).
3 *
4 *  This include file describe the data structure and the functions implemented
5 *  by rtems to handle exceptions.
6 *
7 *  CopyRight (C) 1999 valette@crf.canon.fr
8 *
9 *  The license and distribution terms for this file may be
10 *  found in found in the file LICENSE in this distribution or at
11 *  http://www.rtems.com/license/LICENSE.
12 *
13 *  $Id$
14 */
15#include <bsp/vectors.h>
16#include <libcpu/raw_exception.h>
17#include <bsp.h>
18#include <rtems/bspIo.h>
19
20static rtems_raw_except_global_settings exception_config;
21static rtems_raw_except_connect_data    exception_table[LAST_VALID_EXC + 1];
22
23exception_handler_t globalExceptHdl;
24
25void C_exception_handler(BSP_Exception_frame* excPtr)
26{
27  int recoverable = 0;
28
29  printk("exception handler called for exception %d\n", excPtr->_EXC_number);
30  printk("\t Next PC or Address of fault = %x\n", excPtr->EXC_SRR0);
31  printk("\t Saved MSR = %x\n", excPtr->EXC_SRR1);
32  printk("\t R0 = %x\n", excPtr->GPR0);
33  printk("\t R1 = %x\n", excPtr->GPR1);
34  printk("\t R2 = %x\n", excPtr->GPR2);
35  printk("\t R3 = %x\n", excPtr->GPR3);
36  printk("\t R4 = %x\n", excPtr->GPR4);
37  printk("\t R5 = %x\n", excPtr->GPR5);
38  printk("\t R6 = %x\n", excPtr->GPR6);
39  printk("\t R7 = %x\n", excPtr->GPR7);
40  printk("\t R8 = %x\n", excPtr->GPR8);
41  printk("\t R9 = %x\n", excPtr->GPR9);
42  printk("\t R10 = %x\n", excPtr->GPR10);
43  printk("\t R11 = %x\n", excPtr->GPR11);
44  printk("\t R12 = %x\n", excPtr->GPR12);
45  printk("\t R13 = %x\n", excPtr->GPR13);
46  printk("\t R14 = %x\n", excPtr->GPR14);
47  printk("\t R15 = %x\n", excPtr->GPR15);
48  printk("\t R16 = %x\n", excPtr->GPR16);
49  printk("\t R17 = %x\n", excPtr->GPR17);
50  printk("\t R18 = %x\n", excPtr->GPR18);
51  printk("\t R19 = %x\n", excPtr->GPR19);
52  printk("\t R20 = %x\n", excPtr->GPR20);
53  printk("\t R21 = %x\n", excPtr->GPR21);
54  printk("\t R22 = %x\n", excPtr->GPR22);
55  printk("\t R23 = %x\n", excPtr->GPR23);
56  printk("\t R24 = %x\n", excPtr->GPR24);
57  printk("\t R25 = %x\n", excPtr->GPR25);
58  printk("\t R26 = %x\n", excPtr->GPR26);
59  printk("\t R27 = %x\n", excPtr->GPR27);
60  printk("\t R28 = %x\n", excPtr->GPR28);
61  printk("\t R29 = %x\n", excPtr->GPR29);
62  printk("\t R30 = %x\n", excPtr->GPR30);
63  printk("\t R31 = %x\n", excPtr->GPR31);
64  printk("\t CR = %x\n", excPtr->EXC_CR);
65  printk("\t CTR = %x\n", excPtr->EXC_CTR);
66  printk("\t XER = %x\n", excPtr->EXC_XER);
67  printk("\t LR = %x\n", excPtr->EXC_LR);
68  printk("\t MSR = %x\n", excPtr->EXC_MSR);
69  if (excPtr->_EXC_number == ASM_DEC_VECTOR)
70       recoverable = 1;
71  if (excPtr->_EXC_number == ASM_SYS_VECTOR)
72#ifdef TEST_RAW_EXCEPTION_CODE
73    recoverable = 1;
74#else
75    recoverable = 0;
76#endif
77    if (!recoverable) {
78      printk("unrecoverable exception!!! Push reset button\n");
79      while(1);
80    }
81}
82
83void nop_except_enable(const rtems_raw_except_connect_data* ptr)
84{
85}
86int except_always_enabled(const rtems_raw_except_connect_data* ptr)
87{
88  return 1;
89}
90
91void initialize_exceptions(void)
92{
93  int i;
94
95  /*
96   * Initialize pointer used by low level execption handling
97   */
98  globalExceptHdl                               = C_exception_handler;
99  /*
100   * Put  default_exception_vector_code_prolog at relevant exception
101   * code entry addresses
102   */
103  exception_config.exceptSize                   = LAST_VALID_EXC + 1;
104  exception_config.rawExceptHdlTbl              = &exception_table[0];
105  exception_config.defaultRawEntry.exceptIndex  = 0;
106  exception_config.defaultRawEntry.hdl.vector   = 0;
107  exception_config.defaultRawEntry.hdl.raw_hdl  = default_exception_vector_code_prolog;
108  /*
109   * Note that next line the '&' before default_exception_vector_code_prolog_size
110   * is not a bug as it is defined a .set directly in asm...
111   */
112  exception_config.defaultRawEntry.hdl.raw_hdl_size = (unsigned) &default_exception_vector_code_prolog_size;
113
114/*
115  _BSP_GPLED0_off();
116  _BSP_GPLED1_on();
117*/
118
119  for (i=0; i <= exception_config.exceptSize; i++) {
120/*
121    printk("installing exception number %d\n", i);
122*/
123    if (!ppc_vector_is_valid (i)) {
124      continue;
125    }
126    exception_table[i].exceptIndex      = i;
127    exception_table[i].hdl              = exception_config.defaultRawEntry.hdl;
128    exception_table[i].hdl.vector       = i;
129    exception_table[i].on               = nop_except_enable;
130    exception_table[i].off              = nop_except_enable;
131    exception_table[i].isOn             = except_always_enabled;
132  }
133
134/*  _BSP_GPLED0_on(); */
135
136  if (!ppc_init_exceptions(&exception_config)) {
137    /*
138     * At this stage we may not call BSP_Panic because it uses exceptions!!!
139     */
140    printk("Exception handling initialization failed\n");
141    printk("System locked\n"); while(1);
142  }
143  else {
144#if 0
145    printk("Exception handling initialization done\n");
146#endif
147  }
148
149/*  _BSP_GPLED1_off(); */
150
151}
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