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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(x[1])))
  51.         symbol = "";
  52.  
  53.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__);
  54.     printf("%%rip: %Q (%s)\n",istate->stack[1],symbol);
  55.     printf("ERROR_WORD=%Q\n", istate->stack[0]);
  56.     printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", istate->stack[2],
  57.            istate->stack[3],read_cr0());
  58.     printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",istate->rax,istate->rbx,istate->rcx);
  59.     printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",istate->rdx,istate->rsi,istate->rdi);
  60.     printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",istate->r8,istate->r9,istate->r10);
  61.     printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",istate->r11,istate->r12,istate->r13);
  62.     printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",istate->r14,istate->r15,&istate->stack[0]);
  63.     printf("%%rbp=%Q\n",istate->rbp);
  64.     printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]);
  65.     printf("       %Q, %Q, %Q\n", x[8], x[9], x[10]);
  66.     printf("       %Q, %Q, %Q\n", x[11], x[12], x[13]);
  67.     printf("       %Q, %Q, %Q\n", x[14], x[15], x[16]);
  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.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__); \
  81.     printf("stack: %X, %X, %X, %X\n", istate->stack[0], istate->stack[1],
  82.            istate->stack[2], istate->stack[3]);
  83.     panic("unserviced interrupt\n");
  84. }
  85.  
  86. void gp_fault(int n, istate_t *istate)
  87. {
  88.     print_info_errcode(n, istate);
  89.     panic("general protection fault\n");
  90. }
  91.  
  92. void ss_fault(int n, istate_t *istate)
  93. {
  94.     print_info_errcode(n, istate);
  95.     panic("stack fault\n");
  96. }
  97.  
  98.  
  99. void nm_fault(int n, istate_t *istate)
  100. {
  101. #ifdef CONFIG_FPU_LAZY    
  102.     scheduler_fpu_lazy_request();
  103. #else
  104.     panic("fpu fault");
  105. #endif
  106. }
  107.  
  108. void page_fault(int n, istate_t *istate)
  109. {
  110.     __address page;
  111.    
  112.     page = read_cr2();
  113.     if (!as_page_fault(page)) {
  114.         print_info_errcode(n, istate);
  115.         printf("Page fault address: %Q\n", page);
  116.         panic("page fault\n");
  117.     }
  118. }
  119.  
  120. void tlb_shootdown_ipi(int n, istate_t *istate)
  121. {
  122.     trap_virtual_eoi();
  123.     tlb_shootdown_ipi_recv();
  124. }
  125.  
  126. void trap_virtual_enable_irqs(__u16 irqmask)
  127. {
  128.     if (enable_irqs_function)
  129.         enable_irqs_function(irqmask);
  130.     else
  131.         panic("no enable_irqs_function\n");
  132. }
  133.  
  134. void trap_virtual_disable_irqs(__u16 irqmask)
  135. {
  136.     if (disable_irqs_function)
  137.         disable_irqs_function(irqmask);
  138.     else
  139.         panic("no disable_irqs_function\n");
  140. }
  141.  
  142. void trap_virtual_eoi(void)
  143. {
  144.     if (eoi_function)
  145.         eoi_function();
  146.     else
  147.         panic("no eoi_function\n");
  148.  
  149. }
  150.