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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [powerpc/] [shared/] [vectors/] [vectors_init.c] - Blame information for rev 846

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1 30 unneback 
/*
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 * vectors_init.c Exception hanlding initialisation (and generic handler).
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 *
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 *  This include file describe the data structure and the functions implemented
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 *  by rtems to handle exceptions.
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 *
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 *  CopyRight (C) 1999 valette@crf.canon.fr
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 *
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 *  The license and distribution terms for this file may be
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 *  found in found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: vectors_init.c,v 1.2 2001-09-27 12:01:09 chris Exp $
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 */
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#include <bsp/vectors.h>
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#include <libcpu/raw_exception.h>
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#include <bsp.h>
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static rtems_raw_except_global_settings exception_config;
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static rtems_raw_except_connect_data    exception_table[LAST_VALID_EXC + 1];
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exception_handler_t globalExceptHdl;
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void C_exception_handler(BSP_Exception_frame* excPtr)
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{
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  int recoverable = 0;
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  printk("exception handler called for exception %d\n", excPtr->_EXC_number);
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  printk("\t Next PC or Address of fault = %x\n", excPtr->EXC_SRR0);
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  printk("\t Saved MSR = %x\n", excPtr->EXC_SRR1);
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  printk("\t R0 = %x\n", excPtr->GPR0);
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  printk("\t R1 = %x\n", excPtr->GPR1);
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  printk("\t R2 = %x\n", excPtr->GPR2);
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  printk("\t R3 = %x\n", excPtr->GPR3);
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  printk("\t R4 = %x\n", excPtr->GPR4);
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  printk("\t R5 = %x\n", excPtr->GPR5);
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  printk("\t R6 = %x\n", excPtr->GPR6);
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  printk("\t R7 = %x\n", excPtr->GPR7);
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  printk("\t R8 = %x\n", excPtr->GPR8);
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  printk("\t R9 = %x\n", excPtr->GPR9);
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  printk("\t R10 = %x\n", excPtr->GPR10);
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  printk("\t R11 = %x\n", excPtr->GPR11);
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  printk("\t R12 = %x\n", excPtr->GPR12);
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  printk("\t R13 = %x\n", excPtr->GPR13);
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  printk("\t R14 = %x\n", excPtr->GPR14);
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  printk("\t R15 = %x\n", excPtr->GPR15);
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  printk("\t R16 = %x\n", excPtr->GPR16);
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  printk("\t R17 = %x\n", excPtr->GPR17);
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  printk("\t R18 = %x\n", excPtr->GPR18);
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  printk("\t R19 = %x\n", excPtr->GPR19);
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  printk("\t R20 = %x\n", excPtr->GPR20);
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  printk("\t R21 = %x\n", excPtr->GPR21);
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  printk("\t R22 = %x\n", excPtr->GPR22);
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  printk("\t R23 = %x\n", excPtr->GPR23);
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  printk("\t R24 = %x\n", excPtr->GPR24);
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  printk("\t R25 = %x\n", excPtr->GPR25);
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  printk("\t R26 = %x\n", excPtr->GPR26);
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  printk("\t R27 = %x\n", excPtr->GPR27);
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  printk("\t R28 = %x\n", excPtr->GPR28);
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  printk("\t R29 = %x\n", excPtr->GPR29);
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  printk("\t R30 = %x\n", excPtr->GPR30);
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  printk("\t R31 = %x\n", excPtr->GPR31);
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  printk("\t CR = %x\n", excPtr->EXC_CR);
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  printk("\t CTR = %x\n", excPtr->EXC_CTR);
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  printk("\t XER = %x\n", excPtr->EXC_XER);
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  printk("\t LR = %x\n", excPtr->EXC_LR);
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  printk("\t MSR = %x\n", excPtr->EXC_MSR);
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  if (excPtr->_EXC_number == ASM_DEC_VECTOR)
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       recoverable = 1;
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  if (excPtr->_EXC_number == ASM_SYS_VECTOR)
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#ifdef TEST_RAW_EXCEPTION_CODE
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    recoverable = 1;
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#else
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    recoverable = 0;
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#endif
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    if (!recoverable) {
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      printk("unrecoverable exception!!! Push reset button\n");
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      while(1);
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    }
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}
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void nop_except_enable(const rtems_raw_except_connect_data* ptr)
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{
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}
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int except_always_enabled(const rtems_raw_except_connect_data* ptr)
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{
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  return 1;
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}
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void initialize_exceptions()
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{
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  int i;
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  /*
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   * Initialize pointer used by low level execption handling
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   */
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  globalExceptHdl                               = C_exception_handler;
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  /*
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   * Put  default_exception_vector_code_prolog at relevant exception
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   * code entry addresses
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   */
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  exception_config.exceptSize                   = LAST_VALID_EXC + 1;
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  exception_config.rawExceptHdlTbl              = &exception_table[0];
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  exception_config.defaultRawEntry.exceptIndex  = 0;
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  exception_config.defaultRawEntry.hdl.vector   = 0;
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  exception_config.defaultRawEntry.hdl.raw_hdl  = default_exception_vector_code_prolog;
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  /*
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   * Note that next line the '&' before default_exception_vector_code_prolog_size
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   * is not a bug as it is defined a .set directly in asm...
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   */
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  exception_config.defaultRawEntry.hdl.raw_hdl_size = (unsigned) &default_exception_vector_code_prolog_size;
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  for (i=0; i <= exception_config.exceptSize; i++) {
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    if (!mpc750_vector_is_valid (i)) {
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      continue;
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    }
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    exception_table[i].exceptIndex      = i;
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    exception_table[i].hdl              = exception_config.defaultRawEntry.hdl;
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    exception_table[i].hdl.vector       = i;
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    exception_table[i].on               = nop_except_enable;
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    exception_table[i].off              = nop_except_enable;
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    exception_table[i].isOn             = except_always_enabled;
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  }
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  if (!mpc60x_init_exceptions(&exception_config)) {
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    BSP_panic("Exception handling initialization failed\n");
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  }
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  else {
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    printk("Exception handling initialization done\n");
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  }
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}

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