Subversion Repositories HelenOS

Rev

Rev 1 | Rev 6 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 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 <panic.h>
32
#include <arch/i8259.h>
33
#include <func.h>
34
#include <cpu.h>
35
#include <arch/asm.h>
5 jermar 36
#include <mm/tlb.h>
1 jermar 37
 
38
/*
39
 * Interrupt and exception dispatching.
40
 */
41
 
42
static iroutine ivt[IVT_ITEMS];
43
 
44
void (* disable_irqs_function)(__u16 irqmask) = NULL;
45
void (* enable_irqs_function)(__u16 irqmask) = NULL;
46
void (* eoi_function)(void) = NULL;
47
 
48
iroutine trap_register(__u8 n, iroutine f)
49
{
50
    iroutine old;
51
 
52
    old = ivt[n];
53
    ivt[n] = f;
54
 
55
        return old;
56
}
57
 
58
/*
59
 * Called directly from the assembler code.
60
 * CPU is cpu_priority_high().
61
 */
62
void trap_dispatcher(__u8 n, __u32 stack[])
63
{
64
    ivt[n](n,stack);
65
}
66
 
67
void null_interrupt(__u8 n, __u32 stack[])
68
{
69
    printf("int %d: null_interrupt\n", n);
70
    printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]);
71
    panic("unserviced interrupt\n");
72
}
73
 
74
void gp_fault(__u8 n, __u32 stack[])
75
{
76
    printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]);
77
    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);
78
    printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]);
79
    panic("general protection fault\n");
80
}
81
 
82
void page_fault(__u8 n, __u32 stack[])
83
{
84
    printf("page fault address: %X\n", cpu_read_cr2());
85
    printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]);
86
    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);
87
    printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]);
88
    panic("page fault\n");
89
}
90
 
91
void syscall(__u8 n, __u32 stack[])
92
{
93
    printf("syscall... ");
94
    thread_sleep(1);
95
}
96
 
5 jermar 97
void tlb_shutdown_ipi(__u8 n, __u32 stack[])
98
{
99
    trap_virtual_eoi();
100
    tlb_shutdown_ipi_recv();
101
}
102
 
1 jermar 103
void trap_virtual_enable_irqs(__u16 irqmask)
104
{
105
    if (enable_irqs_function)
106
        enable_irqs_function(irqmask);
107
    else
108
        panic(PANIC "no enable_irqs_function\n");
109
}
110
 
111
void trap_virtual_disable_irqs(__u16 irqmask)
112
{
113
    if (disable_irqs_function)
114
        disable_irqs_function(irqmask);
115
    else
116
        panic(PANIC "no disable_irqs_function\n");
117
}
118
 
119
void trap_virtual_eoi(void)
120
{
121
    if (eoi_function)
122
        eoi_function();
123
    else
124
        panic(PANIC "no eoi_function\n");
125
 
126
}