Subversion Repositories HelenOS

Rev

Rev 224 | Rev 281 | 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>
68 decky 31
#include <debug.h>
1 jermar 32
#include <panic.h>
33
#include <arch/i8259.h>
34
#include <func.h>
35
#include <cpu.h>
36
#include <arch/asm.h>
5 jermar 37
#include <mm/tlb.h>
22 jermar 38
#include <arch.h>
268 palkovsky 39
#include <symtab.h>
1 jermar 40
 
41
/*
42
 * Interrupt and exception dispatching.
43
 */
44
 
45
static iroutine ivt[IVT_ITEMS];
46
 
47
void (* disable_irqs_function)(__u16 irqmask) = NULL;
48
void (* enable_irqs_function)(__u16 irqmask) = NULL;
49
void (* eoi_function)(void) = NULL;
50
 
268 palkovsky 51
#define PRINT_INFO_ERRCODE(x) { \
52
    char *symbol = get_symtab_entry(stack[1]); \
53
    if (!symbol) \
54
        symbol = ""; \
55
    printf("----------------EXCEPTION OCCURED----------------\n"); \
56
    printf("%%eip: %X (%s)\n",x[1],symbol); \
57
    printf("ERROR_WORD=%X\n", x[0]); \
58
    printf("%%cs=%X,flags=%X\n", x[2], x[3]); \
59
    printf("%%eax=%X, %%ebx=%X, %%ecx=%X, %%edx=%X\n",\
60
           x[-2],x[-5],x[-3],x[-4]); \
61
    printf("%%esi=%X, %%edi=%X, %%ebp=%X, %%esp=%X\n",\
62
           x[-8],x[-9],x[-1],x); \
63
    printf("stack: %X, %X, %X, %X\n", x[4], x[5], x[6], x[7]); \
64
    printf("       %X, %X, %X, %X\n", x[8], x[9], x[10], x[11]); \
65
        }
66
 
1 jermar 67
iroutine trap_register(__u8 n, iroutine f)
68
{
68 decky 69
    ASSERT(n < IVT_ITEMS);
70
 
1 jermar 71
    iroutine old;
68 decky 72
 
1 jermar 73
    old = ivt[n];
74
    ivt[n] = f;
68 decky 75
 
76
    return old;
1 jermar 77
}
78
 
79
/*
80
 * Called directly from the assembler code.
81
 * CPU is cpu_priority_high().
82
 */
216 palkovsky 83
void trap_dispatcher(__u8 n, __native stack[])
1 jermar 84
{
68 decky 85
    ASSERT(n < IVT_ITEMS);
86
 
87
    ivt[n](n, stack);
1 jermar 88
}
89
 
216 palkovsky 90
void null_interrupt(__u8 n, __native stack[])
1 jermar 91
{
92
    printf("int %d: null_interrupt\n", n);
93
    printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]);
94
    panic("unserviced interrupt\n");
95
}
96
 
216 palkovsky 97
void gp_fault(__u8 n, __native stack[])
1 jermar 98
{
268 palkovsky 99
    PRINT_INFO_ERRCODE(stack);
168 jermar 100
    panic("general protection fault\n");
1 jermar 101
}
102
 
216 palkovsky 103
void ss_fault(__u8 n, __native stack[])
84 vana 104
{
268 palkovsky 105
    PRINT_INFO_ERRCODE(stack);
103 jermar 106
    panic("stack fault\n");
84 vana 107
}
108
 
109
 
216 palkovsky 110
void nm_fault(__u8 n, __native stack[])
73 vana 111
{
84 vana 112
    reset_TS_flag();
125 jermar 113
    if ((CPU->fpu_owner)!=NULL) {  
114
        fpu_lazy_context_save(&((CPU->fpu_owner)->saved_fpu_context));
92 jermar 115
        (CPU->fpu_owner)->fpu_context_engaged=0; /* don't prevent migration */
73 vana 116
    }
117
    if(THREAD->fpu_context_exists) fpu_lazy_context_restore(&(THREAD->saved_fpu_context));
125 jermar 118
    else {fpu_init();THREAD->fpu_context_exists=1;}
75 vana 119
    CPU->fpu_owner=THREAD;
73 vana 120
}
121
 
122
 
123
 
216 palkovsky 124
void page_fault(__u8 n, __native stack[])
1 jermar 125
{
268 palkovsky 126
    PRINT_INFO_ERRCODE(stack);
115 jermar 127
    printf("page fault address: %X\n", read_cr2());
117 jermar 128
    panic("page fault\n");
1 jermar 129
}
130
 
216 palkovsky 131
void syscall(__u8 n, __native stack[])
1 jermar 132
{
22 jermar 133
    printf("cpu%d: syscall\n", CPU->id);
31 jermar 134
    thread_usleep(1000);
1 jermar 135
}
136
 
216 palkovsky 137
void tlb_shootdown_ipi(__u8 n, __native stack[])
5 jermar 138
{
139
    trap_virtual_eoi();
6 jermar 140
    tlb_shootdown_ipi_recv();
5 jermar 141
}
142
 
216 palkovsky 143
void wakeup_ipi(__u8 n, __native stack[])
7 jermar 144
{
145
    trap_virtual_eoi();
146
}
147
 
1 jermar 148
void trap_virtual_enable_irqs(__u16 irqmask)
149
{
150
    if (enable_irqs_function)
151
        enable_irqs_function(irqmask);
152
    else
68 decky 153
        panic("no enable_irqs_function\n");
1 jermar 154
}
155
 
156
void trap_virtual_disable_irqs(__u16 irqmask)
157
{
158
    if (disable_irqs_function)
159
        disable_irqs_function(irqmask);
160
    else
68 decky 161
        panic("no disable_irqs_function\n");
1 jermar 162
}
163
 
164
void trap_virtual_eoi(void)
165
{
166
    if (eoi_function)
167
        eoi_function();
168
    else
68 decky 169
        panic("no eoi_function\n");
1 jermar 170
 
171
}