source: rtems/c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c @ 362ec23e

4.104.114.84.95
Last change on this file since 362ec23e was acc25ee, checked in by Joel Sherrill <joel.sherrill@…>, on Dec 2, 1999 at 2:31:19 PM

Merged of mcp750 and mvme2307 BSP by Eric Valette <valette@…>.
As part of this effort, the mpc750 libcpu code is now shared with the
ppc6xx.

  • Property mode set to 100644
File size: 4.2 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.OARcorp.com/rtems/license.html.
12 *
13 *  $Id$
14 */
15#include <bsp/vectors.h>
16#include <libcpu/raw_exception.h>
17#include <bsp.h>
18
19static rtems_raw_except_global_settings exception_config;
20static rtems_raw_except_connect_data    exception_table[LAST_VALID_EXC + 1];
21
22exception_handler_t globalExceptHdl;
23
24void C_exception_handler(BSP_Exception_frame* excPtr)
25{
26  int recoverable = 0;
27 
28  printk("exception handler called for exception %d\n", excPtr->_EXC_number);
29  printk("\t Next PC or Address of fault = %x\n", excPtr->EXC_SRR0);
30  printk("\t Saved MSR = %x\n", excPtr->EXC_SRR1);
31  printk("\t R0 = %x\n", excPtr->GPR0);
32  printk("\t R1 = %x\n", excPtr->GPR1);
33  printk("\t R2 = %x\n", excPtr->GPR2);
34  printk("\t R3 = %x\n", excPtr->GPR3);
35  printk("\t R4 = %x\n", excPtr->GPR4);
36  printk("\t R5 = %x\n", excPtr->GPR5);
37  printk("\t R6 = %x\n", excPtr->GPR6);
38  printk("\t R7 = %x\n", excPtr->GPR7);
39  printk("\t R8 = %x\n", excPtr->GPR8);
40  printk("\t R9 = %x\n", excPtr->GPR9);
41  printk("\t R10 = %x\n", excPtr->GPR10);
42  printk("\t R11 = %x\n", excPtr->GPR11);
43  printk("\t R12 = %x\n", excPtr->GPR12);
44  printk("\t R13 = %x\n", excPtr->GPR13);
45  printk("\t R14 = %x\n", excPtr->GPR14);
46  printk("\t R15 = %x\n", excPtr->GPR15);
47  printk("\t R16 = %x\n", excPtr->GPR16);
48  printk("\t R17 = %x\n", excPtr->GPR17);
49  printk("\t R18 = %x\n", excPtr->GPR18);
50  printk("\t R19 = %x\n", excPtr->GPR19);
51  printk("\t R20 = %x\n", excPtr->GPR20);
52  printk("\t R21 = %x\n", excPtr->GPR21);
53  printk("\t R22 = %x\n", excPtr->GPR22);
54  printk("\t R23 = %x\n", excPtr->GPR23);
55  printk("\t R24 = %x\n", excPtr->GPR24);
56  printk("\t R25 = %x\n", excPtr->GPR25);
57  printk("\t R26 = %x\n", excPtr->GPR26);
58  printk("\t R27 = %x\n", excPtr->GPR27);
59  printk("\t R28 = %x\n", excPtr->GPR28);
60  printk("\t R29 = %x\n", excPtr->GPR29);
61  printk("\t R30 = %x\n", excPtr->GPR30);
62  printk("\t R31 = %x\n", excPtr->GPR31);
63  printk("\t CR = %x\n", excPtr->EXC_CR);
64  printk("\t CTR = %x\n", excPtr->EXC_CTR);
65  printk("\t XER = %x\n", excPtr->EXC_XER);
66  printk("\t LR = %x\n", excPtr->EXC_LR);
67  printk("\t MSR = %x\n", excPtr->EXC_MSR);
68  if ( (excPtr->_EXC_number == ASM_DEC_VECTOR) ||
69       (excPtr->_EXC_number == ASM_SYS_VECTOR)
70     )
71       recoverable = 1;
72  if (!recoverable) BSP_panic("unrecoverable exception!!! Push reset button\n");
73}
74
75void nop_except_enable(const rtems_raw_except_connect_data* ptr)
76{
77}
78int except_always_enabled(const rtems_raw_except_connect_data* ptr)
79{
80  return 1;
81}
82
83void initialize_exceptions()
84{
85  int i;
86
87  /*
88   * Initialize pointer used by low level execption handling
89   */
90  globalExceptHdl                               = C_exception_handler;
91  /*
92   * Put  default_exception_vector_code_prolog at relevant exception
93   * code entry addresses
94   */
95  exception_config.exceptSize                   = LAST_VALID_EXC + 1;
96  exception_config.rawExceptHdlTbl              = &exception_table[0];
97  exception_config.defaultRawEntry.exceptIndex  = 0;
98  exception_config.defaultRawEntry.hdl.vector   = 0;
99  exception_config.defaultRawEntry.hdl.raw_hdl  = default_exception_vector_code_prolog;
100  /*
101   * Note that next line the '&' before default_exception_vector_code_prolog_size
102   * is not a bug as it is defined a .set directly in asm...
103   */
104  exception_config.defaultRawEntry.hdl.raw_hdl_size = (unsigned) &default_exception_vector_code_prolog_size;
105  for (i=0; i <= exception_config.exceptSize; i++) {
106    if (!mpc750_vector_is_valid (i)) {
107      continue;
108    }
109    exception_table[i].exceptIndex      = i;
110    exception_table[i].hdl              = exception_config.defaultRawEntry.hdl;
111    exception_table[i].hdl.vector       = i;
112    exception_table[i].on               = nop_except_enable;
113    exception_table[i].off              = nop_except_enable;
114    exception_table[i].isOn             = except_always_enabled;
115  }
116  if (!mpc60x_init_exceptions(&exception_config)) {
117    BSP_panic("Exception handling initialization failed\n");
118  }
119  else {
120    printk("Exception handling initialization done\n");
121  }
122}
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