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| Rev | Author | Line No. | Line |
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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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| 31 | #include <panic.h> |
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| 32 | #include <arch/i8259.h> |
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| 33 | #include <func.h> |
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| 34 | #include <cpu.h> |
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| 35 | #include <arch/asm.h> |
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| 36 | |||
| 37 | /* |
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| 38 | * Interrupt and exception dispatching. |
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| 39 | */ |
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| 40 | |||
| 41 | static iroutine ivt[IVT_ITEMS]; |
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| 42 | |||
| 43 | void (* disable_irqs_function)(__u16 irqmask) = NULL; |
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| 44 | void (* enable_irqs_function)(__u16 irqmask) = NULL; |
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| 45 | void (* eoi_function)(void) = NULL; |
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| 46 | |||
| 47 | iroutine trap_register(__u8 n, iroutine f) |
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| 48 | { |
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| 49 | iroutine old; |
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| 50 | |||
| 51 | old = ivt[n]; |
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| 52 | ivt[n] = f; |
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| 53 | |||
| 54 | return old; |
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| 55 | } |
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| 56 | |||
| 57 | /* |
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| 58 | * Called directly from the assembler code. |
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| 59 | * CPU is cpu_priority_high(). |
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| 60 | */ |
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| 61 | void trap_dispatcher(__u8 n, __u32 stack[]) |
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| 62 | { |
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| 63 | ivt[n](n,stack); |
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| 64 | } |
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| 65 | |||
| 66 | void null_interrupt(__u8 n, __u32 stack[]) |
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| 67 | { |
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| 68 | printf("int %d: null_interrupt\n", n); |
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| 69 | printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]); |
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| 70 | panic("unserviced interrupt\n"); |
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| 71 | } |
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| 72 | |||
| 73 | void gp_fault(__u8 n, __u32 stack[]) |
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| 74 | { |
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| 75 | printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
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| 76 | 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); |
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| 77 | printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
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| 78 | panic("general protection fault\n"); |
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| 79 | } |
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| 80 | |||
| 81 | void page_fault(__u8 n, __u32 stack[]) |
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| 82 | { |
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| 83 | printf("page fault address: %X\n", cpu_read_cr2()); |
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| 84 | printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
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| 85 | 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); |
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| 86 | printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
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| 87 | panic("page fault\n"); |
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| 88 | } |
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| 89 | |||
| 90 | void syscall(__u8 n, __u32 stack[]) |
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| 91 | { |
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| 92 | printf("syscall... "); |
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| 93 | thread_sleep(1); |
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| 94 | } |
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| 95 | |||
| 96 | void trap_virtual_enable_irqs(__u16 irqmask) |
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| 97 | { |
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| 98 | if (enable_irqs_function) |
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| 99 | enable_irqs_function(irqmask); |
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| 100 | else |
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| 101 | panic(PANIC "no enable_irqs_function\n"); |
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| 102 | } |
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| 103 | |||
| 104 | void trap_virtual_disable_irqs(__u16 irqmask) |
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| 105 | { |
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| 106 | if (disable_irqs_function) |
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| 107 | disable_irqs_function(irqmask); |
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| 108 | else |
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| 109 | panic(PANIC "no disable_irqs_function\n"); |
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| 110 | } |
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| 111 | |||
| 112 | void trap_virtual_eoi(void) |
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| 113 | { |
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| 114 | if (eoi_function) |
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| 115 | eoi_function(); |
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| 116 | else |
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| 117 | panic(PANIC "no eoi_function\n"); |
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| 118 | |||
| 119 | } |