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1 | jermar | 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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68 | decky | 31 | #include <debug.h> |
1 | jermar | 32 | #include <panic.h> |
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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5 | jermar | 37 | #include <mm/tlb.h> |
22 | jermar | 38 | #include <arch.h> |
1 | jermar | 39 | |
40 | /* |
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41 | * Interrupt and exception dispatching. |
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42 | */ |
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43 | |||
44 | static iroutine ivt[IVT_ITEMS]; |
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45 | |||
46 | void (* disable_irqs_function)(__u16 irqmask) = NULL; |
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47 | void (* enable_irqs_function)(__u16 irqmask) = NULL; |
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48 | void (* eoi_function)(void) = NULL; |
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49 | |||
50 | iroutine trap_register(__u8 n, iroutine f) |
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51 | { |
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68 | decky | 52 | ASSERT(n < IVT_ITEMS); |
53 | |||
1 | jermar | 54 | iroutine old; |
68 | decky | 55 | |
1 | jermar | 56 | old = ivt[n]; |
57 | ivt[n] = f; |
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68 | decky | 58 | |
59 | return old; |
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1 | jermar | 60 | } |
61 | |||
62 | /* |
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63 | * Called directly from the assembler code. |
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64 | * CPU is cpu_priority_high(). |
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65 | */ |
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66 | void trap_dispatcher(__u8 n, __u32 stack[]) |
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67 | { |
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68 | decky | 68 | ASSERT(n < IVT_ITEMS); |
69 | |||
70 | ivt[n](n, stack); |
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1 | jermar | 71 | } |
72 | |||
73 | void null_interrupt(__u8 n, __u32 stack[]) |
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74 | { |
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75 | printf("int %d: null_interrupt\n", n); |
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76 | printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]); |
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77 | panic("unserviced interrupt\n"); |
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78 | } |
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79 | |||
80 | void gp_fault(__u8 n, __u32 stack[]) |
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81 | { |
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136 | vana | 82 | printf("ERROR_WORD=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
1 | jermar | 83 | printf("%%eax=%L, %%ebx=%L, %%ecx=%L, %%edx=%L,\n%%edi=%L, %%esi=%L, %%ebp=%L, %%esp=%L\n", stack[-2], stack[-5], stack[-3], stack[-4], stack[-9], stack[-8], stack[-1], stack); |
84 | printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
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168 | jermar | 85 | panic("general protection fault\n"); |
136 | vana | 86 | stack[1]++; |
1 | jermar | 87 | } |
88 | |||
84 | vana | 89 | void ss_fault(__u8 n, __u32 stack[]) |
90 | { |
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136 | vana | 91 | printf("ERROR_WORD=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
84 | vana | 92 | printf("%%eax=%L, %%ebx=%L, %%ecx=%L, %%edx=%L,\n%%edi=%L, %%esi=%L, %%ebp=%L, %%esp=%L\n", stack[-2], stack[-5], stack[-3], stack[-4], stack[-9], stack[-8], stack[-1], stack); |
93 | printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
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103 | jermar | 94 | panic("stack fault\n"); |
84 | vana | 95 | } |
96 | |||
97 | |||
73 | vana | 98 | void nm_fault(__u8 n, __u32 stack[]) |
99 | { |
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84 | vana | 100 | reset_TS_flag(); |
125 | jermar | 101 | if ((CPU->fpu_owner)!=NULL) { |
102 | fpu_lazy_context_save(&((CPU->fpu_owner)->saved_fpu_context)); |
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92 | jermar | 103 | (CPU->fpu_owner)->fpu_context_engaged=0; /* don't prevent migration */ |
73 | vana | 104 | } |
105 | if(THREAD->fpu_context_exists) fpu_lazy_context_restore(&(THREAD->saved_fpu_context)); |
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125 | jermar | 106 | else {fpu_init();THREAD->fpu_context_exists=1;} |
75 | vana | 107 | CPU->fpu_owner=THREAD; |
73 | vana | 108 | } |
109 | |||
110 | |||
111 | |||
1 | jermar | 112 | void page_fault(__u8 n, __u32 stack[]) |
113 | { |
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115 | jermar | 114 | printf("page fault address: %X\n", read_cr2()); |
136 | vana | 115 | printf("ERROR_WORD=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
1 | jermar | 116 | printf("%%eax=%L, %%ebx=%L, %%ecx=%L, %%edx=%L,\n%%edi=%L, %%esi=%L, %%ebp=%L, %%esp=%L\n", stack[-2], stack[-5], stack[-3], stack[-4], stack[-9], stack[-8], stack[-1], stack); |
117 | printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
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117 | jermar | 118 | panic("page fault\n"); |
1 | jermar | 119 | } |
120 | |||
121 | void syscall(__u8 n, __u32 stack[]) |
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122 | { |
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22 | jermar | 123 | printf("cpu%d: syscall\n", CPU->id); |
31 | jermar | 124 | thread_usleep(1000); |
1 | jermar | 125 | } |
126 | |||
6 | jermar | 127 | void tlb_shootdown_ipi(__u8 n, __u32 stack[]) |
5 | jermar | 128 | { |
129 | trap_virtual_eoi(); |
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6 | jermar | 130 | tlb_shootdown_ipi_recv(); |
5 | jermar | 131 | } |
132 | |||
7 | jermar | 133 | void wakeup_ipi(__u8 n, __u32 stack[]) |
134 | { |
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135 | trap_virtual_eoi(); |
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136 | } |
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137 | |||
1 | jermar | 138 | void trap_virtual_enable_irqs(__u16 irqmask) |
139 | { |
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140 | if (enable_irqs_function) |
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141 | enable_irqs_function(irqmask); |
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142 | else |
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68 | decky | 143 | panic("no enable_irqs_function\n"); |
1 | jermar | 144 | } |
145 | |||
146 | void trap_virtual_disable_irqs(__u16 irqmask) |
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147 | { |
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148 | if (disable_irqs_function) |
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149 | disable_irqs_function(irqmask); |
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150 | else |
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68 | decky | 151 | panic("no disable_irqs_function\n"); |
1 | jermar | 152 | } |
153 | |||
154 | void trap_virtual_eoi(void) |
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155 | { |
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156 | if (eoi_function) |
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157 | eoi_function(); |
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158 | else |
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68 | decky | 159 | panic("no eoi_function\n"); |
1 | jermar | 160 | |
161 | } |