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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. static 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, %%rbx=%Q, %%rcx=%Q\n",istate->rax,istate->rbx,istate->rcx);
  58.     printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",istate->rdx,istate->rsi,istate->rdi);
  59.     printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",istate->r8,istate->r9,istate->r10);
  60.     printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",istate->r11,istate->r12,istate->r13);
  61.     printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",istate->r14,istate->r15,&istate->stack[0]);
  62.     printf("%%rbp=%Q\n",istate->rbp);
  63.     printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]);
  64.     printf("       %Q, %Q, %Q\n", x[8], x[9], x[10]);
  65.     printf("       %Q, %Q, %Q\n", x[11], x[12], x[13]);
  66.     printf("       %Q, %Q, %Q\n", x[14], x[15], x[16]);
  67. }
  68.  
  69. /*
  70.  * Interrupt and exception dispatching.
  71.  */
  72.  
  73. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  74. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  75. void (* eoi_function)(void) = NULL;
  76.  
  77. void null_interrupt(int n, istate_t *istate)
  78. {
  79.     print_info_errcode(n, istate);
  80.     panic("unserviced interrupt\n");
  81. }
  82.  
  83. void gp_fault(int n, istate_t *istate)
  84. {
  85.     print_info_errcode(n, istate);
  86.     panic("general protection fault\n");
  87. }
  88.  
  89. void ss_fault(int n, istate_t *istate)
  90. {
  91.     print_info_errcode(n, istate);
  92.     panic("stack fault\n");
  93. }
  94.  
  95.  
  96. void nm_fault(int n, istate_t *istate)
  97. {
  98. #ifdef CONFIG_FPU_LAZY    
  99.     scheduler_fpu_lazy_request();
  100. #else
  101.     panic("fpu fault");
  102. #endif
  103. }
  104.  
  105. void page_fault(int n, istate_t *istate)
  106. {
  107.     __address page;
  108.    
  109.     page = read_cr2();
  110.     if (!as_page_fault(page)) {
  111.         print_info_errcode(n, istate);
  112.         printf("Page fault address: %Q\n", page);
  113.         panic("page fault\n");
  114.     }
  115. }
  116.  
  117. void tlb_shootdown_ipi(int n, istate_t *istate)
  118. {
  119.     trap_virtual_eoi();
  120.     tlb_shootdown_ipi_recv();
  121. }
  122.  
  123. void trap_virtual_enable_irqs(__u16 irqmask)
  124. {
  125.     if (enable_irqs_function)
  126.         enable_irqs_function(irqmask);
  127.     else
  128.         panic("no enable_irqs_function\n");
  129. }
  130.  
  131. void trap_virtual_disable_irqs(__u16 irqmask)
  132. {
  133.     if (disable_irqs_function)
  134.         disable_irqs_function(irqmask);
  135.     else
  136.         panic("no disable_irqs_function\n");
  137. }
  138.  
  139. void trap_virtual_eoi(void)
  140. {
  141.     if (eoi_function)
  142.         eoi_function();
  143.     else
  144.         panic("no eoi_function\n");
  145.  
  146. }
  147.