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1 jermar 1 
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/interrupt.h>
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#include <print.h>
68 decky 31 
#include <debug.h>
1 jermar 32 
#include <panic.h>
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#include <arch/i8259.h>
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#include <func.h>
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#include <cpu.h>
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#include <arch/asm.h>
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#include <mm/tlb.h>
22 jermar 38 
#include <arch.h>
1 jermar 39 
 
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/*
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 * Interrupt and exception dispatching.
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 */
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static iroutine ivt[IVT_ITEMS];
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void (* disable_irqs_function)(__u16 irqmask) = NULL;
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void (* enable_irqs_function)(__u16 irqmask) = NULL;
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void (* eoi_function)(void) = NULL;
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iroutine trap_register(__u8 n, iroutine f)
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{
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    ASSERT(n < IVT_ITEMS);
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1 jermar 54 
    iroutine old;
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1 jermar 56 
    old = ivt[n];
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    ivt[n] = f;
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    return old;
1 jermar 60 
}
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/*
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 * Called directly from the assembler code.
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 * CPU is cpu_priority_high().
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 */
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void trap_dispatcher(__u8 n, __u32 stack[])
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{
68 decky 68 
    ASSERT(n < IVT_ITEMS);
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    ivt[n](n, stack);
1 jermar 71 
}
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void null_interrupt(__u8 n, __u32 stack[])
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{
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    printf("int %d: null_interrupt\n", n);
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    printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]);
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    panic("unserviced interrupt\n");
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}
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void gp_fault(__u8 n, __u32 stack[])
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{
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    printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]);
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    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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    printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]);
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    panic("general protection fault\n");
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}
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73 vana 88 
void nm_fault(__u8 n, __u32 stack[])
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{
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75 vana 91 
        if ((CPU->fpu_owner)!=NULL)
73 vana 92 
    {  
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        fpu_lazy_context_save(&((CPU->fpu_owner)->saved_fpu_context));
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        (CPU->fpu_owner)->fpu_context_engaged=0; /* Enables migration */
73 vana 95 
    }
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    if(THREAD->fpu_context_exists) fpu_lazy_context_restore(&(THREAD->saved_fpu_context));
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        else {fpu_init();THREAD->fpu_context_exists=1;}
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75 vana 100 
    CPU->fpu_owner=THREAD;
73 vana 101 
 
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    reset_TS_flag();
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//  panic("#NM fault\n");
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}
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1 jermar 109 
void page_fault(__u8 n, __u32 stack[])
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{
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    printf("page fault address: %X\n", cpu_read_cr2());
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    printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]);
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    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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    printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]);
33 jermar 115 
    printf("page fault\n");
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    cpu_halt();
1 jermar 117 
}
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void syscall(__u8 n, __u32 stack[])
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{
22 jermar 121 
    printf("cpu%d: syscall\n", CPU->id);
31 jermar 122 
    thread_usleep(1000);
1 jermar 123 
}
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6 jermar 125 
void tlb_shootdown_ipi(__u8 n, __u32 stack[])
5 jermar 126 
{
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    trap_virtual_eoi();
6 jermar 128 
    tlb_shootdown_ipi_recv();
5 jermar 129 
}
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7 jermar 131 
void wakeup_ipi(__u8 n, __u32 stack[])
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{
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    trap_virtual_eoi();
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}
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1 jermar 136 
void trap_virtual_enable_irqs(__u16 irqmask)
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{
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    if (enable_irqs_function)
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        enable_irqs_function(irqmask);
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    else
68 decky 141 
        panic("no enable_irqs_function\n");
1 jermar 142 
}
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void trap_virtual_disable_irqs(__u16 irqmask)
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{
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    if (disable_irqs_function)
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        disable_irqs_function(irqmask);
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    else
68 decky 149 
        panic("no disable_irqs_function\n");
1 jermar 150 
}
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void trap_virtual_eoi(void)
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{
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    if (eoi_function)
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        eoi_function();
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    else
68 decky 157 
        panic("no eoi_function\n");
1 jermar 158 
 
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}