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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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712 | decky | 30 | #include <syscall/syscall.h> |
1 | jermar | 31 | #include <print.h> |
68 | decky | 32 | #include <debug.h> |
1 | jermar | 33 | #include <panic.h> |
34 | #include <arch/i8259.h> |
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35 | #include <func.h> |
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36 | #include <cpu.h> |
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37 | #include <arch/asm.h> |
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5 | jermar | 38 | #include <mm/tlb.h> |
703 | jermar | 39 | #include <mm/as.h> |
22 | jermar | 40 | #include <arch.h> |
268 | palkovsky | 41 | #include <symtab.h> |
391 | jermar | 42 | #include <proc/thread.h> |
1 | jermar | 43 | |
44 | /* |
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45 | * Interrupt and exception dispatching. |
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46 | */ |
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47 | |||
48 | void (* disable_irqs_function)(__u16 irqmask) = NULL; |
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49 | void (* enable_irqs_function)(__u16 irqmask) = NULL; |
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50 | void (* eoi_function)(void) = NULL; |
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51 | |||
1008 | jermar | 52 | static void PRINT_INFO_ERRCODE(istate_t *istate) |
53 | { |
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54 | char *symbol = get_symtab_entry(istate->eip); |
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268 | palkovsky | 55 | |
1008 | jermar | 56 | if (!symbol) |
57 | symbol = ""; |
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58 | |||
59 | if (CPU) |
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60 | printf("----------------EXCEPTION OCCURED (cpu%d)----------------\n", CPU->id); |
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61 | else |
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62 | printf("----------------EXCEPTION OCCURED----------------\n"); |
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63 | |||
64 | printf("%%eip: %X (%s)\n",istate->eip,symbol); |
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65 | printf("ERROR_WORD=%X\n", istate->error_word); |
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66 | printf("%%cs=%X,flags=%X\n", istate->cs, istate->eflags); |
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67 | printf("%%eax=%X, %%ebx=%X, %%ecx=%X, %%edx=%X\n", istate->eax,istate->ebx,istate->ecx,istate->edx); |
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68 | printf("%%esi=%X, %%edi=%X, %%ebp=%X, %%esp=%X\n", istate->esi,istate->edi,istate->ebp,istate->esp); |
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69 | printf("stack: %X, %X, %X, %X\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]); |
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70 | printf(" %X, %X, %X, %X\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]); |
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71 | } |
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72 | |||
958 | jermar | 73 | void null_interrupt(int n, istate_t *istate) |
1 | jermar | 74 | { |
958 | jermar | 75 | PRINT_INFO_ERRCODE(istate); |
76 | panic("unserviced interrupt: %d\n", n); |
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1 | jermar | 77 | } |
78 | |||
958 | jermar | 79 | void gp_fault(int n, istate_t *istate) |
1 | jermar | 80 | { |
958 | jermar | 81 | PRINT_INFO_ERRCODE(istate); |
168 | jermar | 82 | panic("general protection fault\n"); |
1 | jermar | 83 | } |
84 | |||
958 | jermar | 85 | void ss_fault(int n, istate_t *istate) |
84 | vana | 86 | { |
958 | jermar | 87 | PRINT_INFO_ERRCODE(istate); |
103 | jermar | 88 | panic("stack fault\n"); |
84 | vana | 89 | } |
90 | |||
958 | jermar | 91 | void nm_fault(int n, istate_t *istate) |
73 | vana | 92 | { |
458 | decky | 93 | #ifdef CONFIG_FPU_LAZY |
309 | palkovsky | 94 | scheduler_fpu_lazy_request(); |
95 | #else |
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96 | panic("fpu fault"); |
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97 | #endif |
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73 | vana | 98 | } |
99 | |||
958 | jermar | 100 | void page_fault(int n, istate_t *istate) |
1 | jermar | 101 | { |
703 | jermar | 102 | __address page; |
103 | |||
104 | page = read_cr2(); |
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105 | if (!as_page_fault(page)) { |
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958 | jermar | 106 | PRINT_INFO_ERRCODE(istate); |
703 | jermar | 107 | printf("page fault address: %X\n", page); |
108 | panic("page fault\n"); |
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109 | } |
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1 | jermar | 110 | } |
111 | |||
958 | jermar | 112 | void syscall(int n, istate_t *istate) |
1 | jermar | 113 | { |
955 | palkovsky | 114 | interrupts_enable(); |
959 | palkovsky | 115 | if (istate->esi < SYSCALL_END) |
116 | istate->eax = syscall_table[istate->esi](istate->eax, istate->ebx, istate->ecx, istate->edx); |
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712 | decky | 117 | else |
959 | palkovsky | 118 | panic("Undefined syscall %d", istate->esi); |
955 | palkovsky | 119 | interrupts_disable(); |
1 | jermar | 120 | } |
121 | |||
958 | jermar | 122 | void tlb_shootdown_ipi(int n, istate_t *istate) |
5 | jermar | 123 | { |
124 | trap_virtual_eoi(); |
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6 | jermar | 125 | tlb_shootdown_ipi_recv(); |
5 | jermar | 126 | } |
127 | |||
1 | jermar | 128 | void trap_virtual_enable_irqs(__u16 irqmask) |
129 | { |
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130 | if (enable_irqs_function) |
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131 | enable_irqs_function(irqmask); |
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132 | else |
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68 | decky | 133 | panic("no enable_irqs_function\n"); |
1 | jermar | 134 | } |
135 | |||
136 | void trap_virtual_disable_irqs(__u16 irqmask) |
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137 | { |
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138 | if (disable_irqs_function) |
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139 | disable_irqs_function(irqmask); |
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140 | else |
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68 | decky | 141 | panic("no disable_irqs_function\n"); |
1 | jermar | 142 | } |
143 | |||
144 | void trap_virtual_eoi(void) |
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145 | { |
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146 | if (eoi_function) |
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147 | eoi_function(); |
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148 | else |
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68 | decky | 149 | panic("no eoi_function\n"); |
1 | jermar | 150 | |
151 | } |