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226 | palkovsky | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #include <arch/interrupt.h> |
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30 | #include <print.h> |
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31 | #include <debug.h> |
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32 | #include <panic.h> |
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33 | #include <arch/i8259.h> |
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34 | #include <func.h> |
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35 | #include <cpu.h> |
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36 | #include <arch/asm.h> |
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37 | #include <mm/tlb.h> |
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38 | #include <arch.h> |
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268 | palkovsky | 39 | #include <symtab.h> |
226 | palkovsky | 40 | |
268 | palkovsky | 41 | #define PRINT_INFO_ERRCODE(x) { \ |
42 | char *symbol = get_symtab_entry(stack[1]); \ |
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43 | if (!symbol) \ |
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44 | symbol = ""; \ |
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45 | printf("----------------EXCEPTION OCCURED----------------\n"); \ |
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46 | printf("%%rip: %Q (%s)\n",x[1],symbol); \ |
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47 | printf("ERROR_WORD=%Q\n", x[0]); \ |
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48 | printf("%%rcs=%Q,flags=%Q\n", x[2], x[3]); \ |
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49 | printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",x[-1],x[-2],x[-3]); \ |
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50 | printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",x[-4],x[-5],x[-6]); \ |
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51 | printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",x[-7],x[-8],x[-9]); \ |
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52 | printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",x[-10],x[-11],x[-12]); \ |
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53 | printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",x[-13],x[-14],x); \ |
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54 | printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]); \ |
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55 | printf(" %Q, %Q, %Q\n", x[8], x[9], x[10]); \ |
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56 | } |
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57 | |||
226 | palkovsky | 58 | /* |
59 | * Interrupt and exception dispatching. |
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60 | */ |
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61 | |||
62 | static iroutine ivt[IVT_ITEMS]; |
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63 | |||
64 | void (* disable_irqs_function)(__u16 irqmask) = NULL; |
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65 | void (* enable_irqs_function)(__u16 irqmask) = NULL; |
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66 | void (* eoi_function)(void) = NULL; |
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67 | |||
68 | iroutine trap_register(__u8 n, iroutine f) |
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69 | { |
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70 | ASSERT(n < IVT_ITEMS); |
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71 | |||
72 | iroutine old; |
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73 | |||
74 | old = ivt[n]; |
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75 | ivt[n] = f; |
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76 | |||
77 | return old; |
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78 | } |
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79 | |||
80 | /* |
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81 | * Called directly from the assembler code. |
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82 | * CPU is cpu_priority_high(). |
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83 | */ |
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84 | void trap_dispatcher(__u8 n, __native stack[]) |
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85 | { |
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86 | ASSERT(n < IVT_ITEMS); |
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87 | |||
88 | ivt[n](n, stack); |
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89 | } |
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90 | |||
91 | void null_interrupt(__u8 n, __native stack[]) |
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92 | { |
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268 | palkovsky | 93 | printf("----------------EXCEPTION OCCURED----------------\n"); |
226 | palkovsky | 94 | printf("int %d: null_interrupt\n", n); |
95 | printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]); |
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96 | panic("unserviced interrupt\n"); |
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97 | } |
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98 | |||
99 | void gp_fault(__u8 n, __native stack[]) |
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100 | { |
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268 | palkovsky | 101 | PRINT_INFO_ERRCODE(stack); |
226 | palkovsky | 102 | panic("general protection fault\n"); |
103 | } |
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104 | |||
105 | void ss_fault(__u8 n, __native stack[]) |
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106 | { |
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268 | palkovsky | 107 | PRINT_INFO_ERRCODE(stack); |
226 | palkovsky | 108 | panic("stack fault\n"); |
109 | } |
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110 | |||
111 | |||
112 | void nm_fault(__u8 n, __native stack[]) |
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113 | { |
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114 | reset_TS_flag(); |
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115 | if ((CPU->fpu_owner)!=NULL) { |
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116 | fpu_lazy_context_save(&((CPU->fpu_owner)->saved_fpu_context)); |
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117 | (CPU->fpu_owner)->fpu_context_engaged=0; /* don't prevent migration */ |
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118 | } |
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119 | if(THREAD->fpu_context_exists) fpu_lazy_context_restore(&(THREAD->saved_fpu_context)); |
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120 | else {fpu_init();THREAD->fpu_context_exists=1;} |
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121 | CPU->fpu_owner=THREAD; |
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122 | } |
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123 | |||
124 | |||
125 | |||
126 | void page_fault(__u8 n, __native stack[]) |
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127 | { |
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268 | palkovsky | 128 | PRINT_INFO_ERRCODE(stack); |
129 | printf("Page fault address: %Q\n", read_cr2()); |
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226 | palkovsky | 130 | panic("page fault\n"); |
131 | } |
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132 | |||
133 | void syscall(__u8 n, __native stack[]) |
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134 | { |
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135 | printf("cpu%d: syscall\n", CPU->id); |
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136 | thread_usleep(1000); |
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137 | } |
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138 | |||
139 | void tlb_shootdown_ipi(__u8 n, __native stack[]) |
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140 | { |
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141 | trap_virtual_eoi(); |
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142 | tlb_shootdown_ipi_recv(); |
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143 | } |
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144 | |||
145 | void wakeup_ipi(__u8 n, __native stack[]) |
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146 | { |
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147 | trap_virtual_eoi(); |
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148 | } |
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149 | |||
150 | void trap_virtual_enable_irqs(__u16 irqmask) |
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151 | { |
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152 | if (enable_irqs_function) |
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153 | enable_irqs_function(irqmask); |
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154 | else |
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155 | panic("no enable_irqs_function\n"); |
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156 | } |
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157 | |||
158 | void trap_virtual_disable_irqs(__u16 irqmask) |
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159 | { |
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160 | if (disable_irqs_function) |
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161 | disable_irqs_function(irqmask); |
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162 | else |
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163 | panic("no disable_irqs_function\n"); |
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164 | } |
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165 | |||
166 | void trap_virtual_eoi(void) |
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167 | { |
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168 | if (eoi_function) |
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169 | eoi_function(); |
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170 | else |
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171 | panic("no eoi_function\n"); |
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172 | |||
173 | } |