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