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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.  
  62. static void print_info_errcode(int n, struct interrupt_context *ctx)
  63. {
  64.     char *symbol;
  65.     __u64 *x = &ctx->stack[0];
  66.  
  67.     if (!(symbol=get_symtab_entry(x[1])))
  68.         symbol = "";
  69.  
  70.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__);
  71.     printf("%%rip: %Q (%s)\n",ctx->stack[1],symbol);
  72.     printf("ERROR_WORD=%Q\n", ctx->stack[0]);
  73.     printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", ctx->stack[2],
  74.            ctx->stack[3],read_cr0());
  75.     printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",ctx->rax,ctx->rbx,ctx->rcx);
  76.     printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",ctx->rdx,ctx->rsi,ctx->rdi);
  77.     printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",ctx->r8,ctx->r9,ctx->r10);
  78.     printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",ctx->r11,ctx->r12,ctx->r13);
  79.     printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",ctx->r14,ctx->r15,&ctx->stack[0]);
  80.     printf("%%rbp=%Q\n",ctx->rbp);
  81.     printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]);
  82.     printf("       %Q, %Q, %Q\n", x[8], x[9], x[10]);
  83.     printf("       %Q, %Q, %Q\n", x[11], x[12], x[13]);
  84.     printf("       %Q, %Q, %Q\n", x[14], x[15], x[16]);
  85. //  messy_stack_trace(&x[5]);
  86. }
  87.  
  88. /*
  89.  * Interrupt and exception dispatching.
  90.  */
  91.  
  92. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  93. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  94. void (* eoi_function)(void) = NULL;
  95.  
  96. void null_interrupt(int n, struct interrupt_context *ctx)
  97. {
  98.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__); \
  99.     printf("stack: %X, %X, %X, %X\n", ctx->stack[0], ctx->stack[1],
  100.            ctx->stack[2], ctx->stack[3]);
  101.     panic("unserviced interrupt\n");
  102. }
  103.  
  104. void gp_fault(int n, void *stack)
  105. {
  106.     print_info_errcode(n,stack);
  107.     panic("general protection fault\n");
  108. }
  109.  
  110. void ss_fault(int n, void *stack)
  111. {
  112.     print_info_errcode(n,stack);
  113.     panic("stack fault\n");
  114. }
  115.  
  116.  
  117. void nm_fault(int n, void *stack)
  118. {
  119. #ifdef CONFIG_FPU_LAZY    
  120.     scheduler_fpu_lazy_request();
  121. #else
  122.     panic("fpu fault");
  123. #endif
  124. }
  125.  
  126. void page_fault(int n, struct interrupt_context *ctx)
  127. {
  128.     __address page;
  129.    
  130.     page = read_cr2();
  131.     if (!as_page_fault(page)) {
  132.         print_info_errcode(n,ctx);
  133.         printf("Page fault address: %Q\n", page);
  134.         panic("page fault\n");
  135.     }
  136. }
  137.  
  138. void tlb_shootdown_ipi(int n, void *stack)
  139. {
  140.     trap_virtual_eoi();
  141.     tlb_shootdown_ipi_recv();
  142. }
  143.  
  144. void wakeup_ipi(int n, void *stack)
  145. {
  146.     trap_virtual_eoi();
  147. }
  148.  
  149. void trap_virtual_enable_irqs(__u16 irqmask)
  150. {
  151.     if (enable_irqs_function)
  152.         enable_irqs_function(irqmask);
  153.     else
  154.         panic("no enable_irqs_function\n");
  155. }
  156.  
  157. void trap_virtual_disable_irqs(__u16 irqmask)
  158. {
  159.     if (disable_irqs_function)
  160.         disable_irqs_function(irqmask);
  161.     else
  162.         panic("no disable_irqs_function\n");
  163. }
  164.  
  165. void trap_virtual_eoi(void)
  166. {
  167.     if (eoi_function)
  168.         eoi_function();
  169.     else
  170.         panic("no eoi_function\n");
  171.  
  172. }
  173.