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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <arch/interrupt.h>
  30. #include <print.h>
  31. #include <debug.h>
  32. #include <panic.h>
  33. #include <arch/i8259.h>
  34. #include <func.h>
  35. #include <cpu.h>
  36. #include <arch/asm.h>
  37. #include <mm/tlb.h>
  38. #include <mm/as.h>
  39. #include <arch.h>
  40. #include <symtab.h>
  41. #include <arch/asm.h>
  42. #include <proc/scheduler.h>
  43. #include <proc/thread.h>
  44.  
  45. void print_info_errcode(int n, istate_t *istate)
  46. {
  47.     char *symbol;
  48. /*  __u64 *x = &istate->stack[0]; */
  49.  
  50.     if (!(symbol=get_symtab_entry(istate->rip)))
  51.         symbol = "";
  52.  
  53.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__);
  54.     printf("%%rip: %Q (%s)\n",istate->rip, symbol);
  55.     printf("ERROR_WORD=%Q\n", istate->error_word);
  56.     printf("%%rcs=%Q, flags=%Q, %%cr0=%Q\n", istate->cs, istate->rflags,read_cr0());
  57.     printf("%%rax=%Q, %%rcx=%Q, %%rdx=%Q\n",istate->rax,istate->rcx,istate->rdx);
  58.     printf("%%rsi=%Q, %%rdi=%Q, %%r8 =%Q\n",istate->rsi,istate->rdi,istate->r8);
  59.     printf("%%r9 =%Q, %%r10 =%Q, %%r11=%Q\n",istate->r9,istate->r10,istate->r11);
  60. #ifdef CONFIG_DEBUG_ALLREGS
  61.     printf("%%r12=%Q, %%r13=%Q, %%r14=%Q\n",istate->r12,istate->r13,istate->r14);
  62.     printf("%%r15=%Q, %%rbx=%Q, %%rbp=%Q\n",istate->r15,istate->rbx,&istate->rbp);
  63. #endif
  64.     printf("%%rsp=%Q\n",&istate->stack[0]);
  65. }
  66.  
  67. /*
  68.  * Interrupt and exception dispatching.
  69.  */
  70.  
  71. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  72. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  73. void (* eoi_function)(void) = NULL;
  74.  
  75. void null_interrupt(int n, istate_t *istate)
  76. {
  77.     print_info_errcode(n, istate);
  78.     panic("unserviced interrupt\n");
  79. }
  80.  
  81. void gp_fault(int n, istate_t *istate)
  82. {
  83.     print_info_errcode(n, istate);
  84.     panic("general protection fault\n");
  85. }
  86.  
  87. void ss_fault(int n, istate_t *istate)
  88. {
  89.     print_info_errcode(n, istate);
  90.     panic("stack fault\n");
  91. }
  92.  
  93. void nm_fault(int n, istate_t *istate)
  94. {
  95. #ifdef CONFIG_FPU_LAZY    
  96.     scheduler_fpu_lazy_request();
  97. #else
  98.     panic("fpu fault");
  99. #endif
  100. }
  101.  
  102. void tlb_shootdown_ipi(int n, istate_t *istate)
  103. {
  104.     trap_virtual_eoi();
  105.     tlb_shootdown_ipi_recv();
  106. }
  107.  
  108. void trap_virtual_enable_irqs(__u16 irqmask)
  109. {
  110.     if (enable_irqs_function)
  111.         enable_irqs_function(irqmask);
  112.     else
  113.         panic("no enable_irqs_function\n");
  114. }
  115.  
  116. void trap_virtual_disable_irqs(__u16 irqmask)
  117. {
  118.     if (disable_irqs_function)
  119.         disable_irqs_function(irqmask);
  120.     else
  121.         panic("no disable_irqs_function\n");
  122. }
  123.  
  124. void trap_virtual_eoi(void)
  125. {
  126.     if (eoi_function)
  127.         eoi_function();
  128.     else
  129.         panic("no eoi_function\n");
  130.  
  131. }
  132.