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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 <arch.h>
  39. #include <symtab.h>
  40. #include <proc/thread.h>
  41.  
  42. /*
  43.  * Interrupt and exception dispatching.
  44.  */
  45.  
  46. static iroutine ivt[IVT_ITEMS];
  47.  
  48. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  49. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  50. void (* eoi_function)(void) = NULL;
  51.  
  52. #define PRINT_INFO_ERRCODE(x) { \
  53.     char *symbol = get_symtab_entry(stack[1]); \
  54.     if (!symbol) \
  55.         symbol = ""; \
  56.     printf("----------------EXCEPTION OCCURED----------------\n"); \
  57.     printf("%%eip: %X (%s)\n",x[1],symbol); \
  58.     printf("ERROR_WORD=%X\n", x[0]); \
  59.     printf("%%cs=%X,flags=%X\n", x[2], x[3]); \
  60.     printf("%%eax=%X, %%ebx=%X, %%ecx=%X, %%edx=%X\n",\
  61.            x[-2],x[-5],x[-3],x[-4]); \
  62.     printf("%%esi=%X, %%edi=%X, %%ebp=%X, %%esp=%X\n",\
  63.            x[-8],x[-9],x[-1],x); \
  64.     printf("stack: %X, %X, %X, %X\n", x[4], x[5], x[6], x[7]); \
  65.     printf("       %X, %X, %X, %X\n", x[8], x[9], x[10], x[11]); \
  66.         }
  67.  
  68. iroutine trap_register(__u8 n, iroutine f)
  69. {
  70.     ASSERT(n < IVT_ITEMS);
  71.    
  72.     iroutine old;
  73.    
  74.     old = ivt[n];
  75.     ivt[n] = f;
  76.    
  77.     return old;
  78. }
  79.  
  80. /*
  81.  * Called directly from the assembler code.
  82.  * CPU is interrupts_disable()'d.
  83.  */
  84. void trap_dispatcher(__u8 n, __native stack[])
  85. {
  86.     ASSERT(n < IVT_ITEMS);
  87.    
  88.     ivt[n](n, stack);
  89. }
  90.  
  91. void null_interrupt(__u8 n, __native stack[])
  92. {
  93.     printf("int %d: null_interrupt\n", n);
  94.     printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]);
  95.     panic("unserviced interrupt\n");
  96. }
  97.  
  98. void gp_fault(__u8 n, __native stack[])
  99. {
  100.     PRINT_INFO_ERRCODE(stack);
  101.     panic("general protection fault\n");
  102. }
  103.  
  104. void ss_fault(__u8 n, __native stack[])
  105. {
  106.     PRINT_INFO_ERRCODE(stack);
  107.     panic("stack fault\n");
  108. }
  109.  
  110.  
  111. void nm_fault(__u8 n, __native stack[])
  112. {
  113. #ifdef CONFIG_FPU_LAZY    
  114.     scheduler_fpu_lazy_request();
  115. #else
  116.     panic("fpu fault");
  117. #endif
  118. }
  119.  
  120.  
  121.  
  122. void page_fault(__u8 n, __native stack[])
  123. {
  124.     PRINT_INFO_ERRCODE(stack);
  125.     printf("page fault address: %X\n", read_cr2());
  126.     panic("page fault\n");
  127. }
  128.  
  129. void syscall(__u8 n, __native stack[])
  130. {
  131.     printf("cpu%d: syscall\n", CPU->id);
  132.     thread_usleep(1000);
  133. }
  134.  
  135. void tlb_shootdown_ipi(__u8 n, __native stack[])
  136. {
  137.     trap_virtual_eoi();
  138.     tlb_shootdown_ipi_recv();
  139. }
  140.  
  141. void wakeup_ipi(__u8 n, __native stack[])
  142. {
  143.     trap_virtual_eoi();
  144. }
  145.  
  146. void trap_virtual_enable_irqs(__u16 irqmask)
  147. {
  148.     if (enable_irqs_function)
  149.         enable_irqs_function(irqmask);
  150.     else
  151.         panic("no enable_irqs_function\n");
  152. }
  153.  
  154. void trap_virtual_disable_irqs(__u16 irqmask)
  155. {
  156.     if (disable_irqs_function)
  157.         disable_irqs_function(irqmask);
  158.     else
  159.         panic("no disable_irqs_function\n");
  160. }
  161.  
  162. void trap_virtual_eoi(void)
  163. {
  164.     if (eoi_function)
  165.         eoi_function();
  166.     else
  167.         panic("no eoi_function\n");
  168.  
  169. }
  170.