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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 <arch/asm.h>
  41. #include <proc/scheduler.h>
  42. #include <proc/thread.h>
  43.  
  44.  
  45. static void messy_stack_trace(__native *stack)
  46. {
  47.     __native *upper_limit = (__native *)(((__native)get_stack_base()) + STACK_SIZE);
  48.     char *symbol;
  49.  
  50.     printf("Stack contents: ");
  51.     while (stack < upper_limit) {
  52.         symbol = get_symtab_entry((__address)*stack);
  53.         if (symbol)
  54.             printf("%s, ", symbol);
  55.         stack++;
  56.     }
  57.     printf("\n");
  58. }
  59.  
  60. static void print_info_errcode(__u8 n, __native x[])
  61. {
  62.     char *symbol;
  63.  
  64.     if (!(symbol=get_symtab_entry(x[1])))
  65.         symbol = "";
  66.  
  67.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__);
  68.     printf("%%rip: %Q (%s)\n",x[1],symbol);
  69.     printf("ERROR_WORD=%Q\n", x[0]);
  70.     printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", x[2], x[3],read_cr0());
  71.     printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",x[-2],x[-3],x[-4]);
  72.     printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",x[-5],x[-6],x[-7]);
  73.     printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",x[-8],x[-9],x[-10]);
  74.     printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",x[-11],x[-12],x[-13]);
  75.     printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",x[-14],x[-15],x);
  76.     printf("%%rbp=%Q\n",x[-1]);
  77.     printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]);
  78.     printf("       %Q, %Q, %Q\n", x[8], x[9], x[10]);
  79.     printf("       %Q, %Q, %Q\n", x[11], x[12], x[13]);
  80.     printf("       %Q, %Q, %Q\n", x[14], x[15], x[16]);
  81.     printf("       %Q, %Q, %Q\n", x[17], x[18], x[19]);
  82.     printf("       %Q, %Q, %Q\n", x[20], x[21], x[22]);
  83.     printf("       %Q, %Q, %Q\n", x[23], x[24], x[25]);
  84.     messy_stack_trace(&x[5]);
  85. }
  86.  
  87. /*
  88.  * Interrupt and exception dispatching.
  89.  */
  90.  
  91. static iroutine ivt[IVT_ITEMS];
  92.  
  93. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  94. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  95. void (* eoi_function)(void) = NULL;
  96.  
  97. iroutine trap_register(__u8 n, iroutine f)
  98. {
  99.     ASSERT(n < IVT_ITEMS);
  100.    
  101.     iroutine old;
  102.    
  103.     old = ivt[n];
  104.     ivt[n] = f;
  105.    
  106.     return old;
  107. }
  108.  
  109. /*
  110.  * Called directly from the assembler code.
  111.  * CPU is interrupts_disable()'d.
  112.  */
  113. void trap_dispatcher(__u8 n, __native stack[])
  114. {
  115.     ASSERT(n < IVT_ITEMS);
  116.    
  117.     ivt[n](n, stack);
  118. }
  119.  
  120. void null_interrupt(__u8 n, __native stack[])
  121. {
  122.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__); \
  123.     printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]);
  124.     panic("unserviced interrupt\n");
  125. }
  126.  
  127. void gp_fault(__u8 n, __native stack[])
  128. {
  129.     print_info_errcode(n,stack);
  130.     panic("general protection fault\n");
  131. }
  132.  
  133. void ss_fault(__u8 n, __native stack[])
  134. {
  135.     print_info_errcode(n,stack);
  136.     panic("stack fault\n");
  137. }
  138.  
  139.  
  140. void nm_fault(__u8 n, __native stack[])
  141. {
  142. #ifdef CONFIG_FPU_LAZY    
  143.     scheduler_fpu_lazy_request();
  144. #else
  145.     panic("fpu fault");
  146. #endif
  147. }
  148.  
  149.  
  150.  
  151. void page_fault(__u8 n, __native stack[])
  152. {
  153.     print_info_errcode(n,stack);
  154.     printf("Page fault address: %Q\n", read_cr2());
  155.     panic("page fault\n");
  156. }
  157.  
  158. void syscall(__u8 n, __native stack[])
  159. {
  160.     printf("cpu%d: syscall\n", CPU->id);
  161.     thread_usleep(1000);
  162. }
  163.  
  164. void tlb_shootdown_ipi(__u8 n, __native stack[])
  165. {
  166.     trap_virtual_eoi();
  167.     tlb_shootdown_ipi_recv();
  168. }
  169.  
  170. void wakeup_ipi(__u8 n, __native stack[])
  171. {
  172.     trap_virtual_eoi();
  173. }
  174.  
  175. void trap_virtual_enable_irqs(__u16 irqmask)
  176. {
  177.     if (enable_irqs_function)
  178.         enable_irqs_function(irqmask);
  179.     else
  180.         panic("no enable_irqs_function\n");
  181. }
  182.  
  183. void trap_virtual_disable_irqs(__u16 irqmask)
  184. {
  185.     if (disable_irqs_function)
  186.         disable_irqs_function(irqmask);
  187.     else
  188.         panic("no disable_irqs_function\n");
  189. }
  190.  
  191. void trap_virtual_eoi(void)
  192. {
  193.     if (eoi_function)
  194.         eoi_function();
  195.     else
  196.         panic("no eoi_function\n");
  197.  
  198. }
  199.