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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. #include <proc/task.h>
  45. #include <synch/spinlock.h>
  46. #include <arch/ddi/ddi.h>
  47.  
  48. void print_info_errcode(int n, istate_t *istate)
  49. {
  50.     char *symbol;
  51. /*  __u64 *x = &istate->stack[0]; */
  52.  
  53.     if (!(symbol=get_symtab_entry(istate->rip)))
  54.         symbol = "";
  55.  
  56.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__);
  57.     printf("%%rip: %#llX (%s)\n",istate->rip, symbol);
  58.     printf("ERROR_WORD=%#llX\n", istate->error_word);
  59.     printf("%%rcs=%#llX, flags=%#llX, %%cr0=%#llX\n", istate->cs, istate->rflags,read_cr0());
  60.     printf("%%rax=%#llX, %%rcx=%#llX, %%rdx=%#llX\n",istate->rax,istate->rcx,istate->rdx);
  61.     printf("%%rsi=%#llX, %%rdi=%#llX, %%r8 =%#llX\n",istate->rsi,istate->rdi,istate->r8);
  62.     printf("%%r9 =%#llX, %%r10 =%#llX, %%r11=%#llX\n",istate->r9,istate->r10,istate->r11);
  63. #ifdef CONFIG_DEBUG_ALLREGS
  64.     printf("%%r12=%#llX, %%r13=%#llX, %%r14=%#llX\n",istate->r12,istate->r13,istate->r14);
  65.     printf("%%r15=%#llX, %%rbx=%#llX, %%rbp=%#llX\n",istate->r15,istate->rbx,&istate->rbp);
  66. #endif
  67.     printf("%%rsp=%#llX\n",&istate->stack[0]);
  68. }
  69.  
  70. /*
  71.  * Interrupt and exception dispatching.
  72.  */
  73.  
  74. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  75. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  76. void (* eoi_function)(void) = NULL;
  77.  
  78. void null_interrupt(int n, istate_t *istate)
  79. {
  80.     print_info_errcode(n, istate);
  81.     panic("unserviced interrupt\n");
  82. }
  83.  
  84. /** General Protection Fault. */
  85. void gp_fault(int n, istate_t *istate)
  86. {
  87.     if (TASK) {
  88.         count_t ver;
  89.  
  90.         spinlock_lock(&TASK->lock);
  91.         ver = TASK->arch.iomapver;
  92.         spinlock_unlock(&TASK->lock);
  93.  
  94.         if (CPU->arch.iomapver_copy != ver) {
  95.             /*
  96.              * This fault can be caused by an early access
  97.              * to I/O port because of an out-dated
  98.              * I/O Permission bitmap installed on CPU.
  99.              * Install the fresh copy and restart
  100.              * the instruction.
  101.              */
  102.             io_perm_bitmap_install();
  103.             return;
  104.         }
  105.     }
  106.  
  107.     print_info_errcode(n, istate);
  108.     panic("general protection fault\n");
  109. }
  110.  
  111. void ss_fault(int n, istate_t *istate)
  112. {
  113.     print_info_errcode(n, istate);
  114.     panic("stack fault\n");
  115. }
  116.  
  117. void nm_fault(int n, istate_t *istate)
  118. {
  119. #ifdef CONFIG_FPU_LAZY    
  120.     scheduler_fpu_lazy_request();
  121. #else
  122.     panic("fpu fault");
  123. #endif
  124. }
  125.  
  126. void tlb_shootdown_ipi(int n, istate_t *istate)
  127. {
  128.     trap_virtual_eoi();
  129.     tlb_shootdown_ipi_recv();
  130. }
  131.  
  132. void trap_virtual_enable_irqs(__u16 irqmask)
  133. {
  134.     if (enable_irqs_function)
  135.         enable_irqs_function(irqmask);
  136.     else
  137.         panic("no enable_irqs_function\n");
  138. }
  139.  
  140. void trap_virtual_disable_irqs(__u16 irqmask)
  141. {
  142.     if (disable_irqs_function)
  143.         disable_irqs_function(irqmask);
  144.     else
  145.         panic("no disable_irqs_function\n");
  146. }
  147.  
  148. void trap_virtual_eoi(void)
  149. {
  150.     if (eoi_function)
  151.         eoi_function();
  152.     else
  153.         panic("no eoi_function\n");
  154.  
  155. }
  156.