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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>
712 decky 30
#include <syscall/syscall.h>
1 jermar 31
#include <print.h>
68 decky 32
#include <debug.h>
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#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>
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#include <mm/as.h>
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#include <arch.h>
268 palkovsky 41
#include <symtab.h>
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#include <proc/thread.h>
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#include <proc/task.h>
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#include <synch/spinlock.h>
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#include <arch/ddi/ddi.h>
1 jermar 46
 
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/*
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 * Interrupt and exception dispatching.
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 */
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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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1008 jermar 55
static void PRINT_INFO_ERRCODE(istate_t *istate)
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{
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    char *symbol = get_symtab_entry(istate->eip);
268 palkovsky 58
 
1008 jermar 59
    if (!symbol)
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        symbol = "";
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    if (CPU)
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        printf("----------------EXCEPTION OCCURED (cpu%d)----------------\n", CPU->id);
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    else
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        printf("----------------EXCEPTION OCCURED----------------\n");
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1221 decky 67
    printf("%%eip: %#x (%s)\n",istate->eip,symbol);
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    printf("ERROR_WORD=%#x\n", istate->error_word);
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    printf("%%cs=%#x,flags=%#x\n", istate->cs, istate->eflags);
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    printf("%%eax=%#x, %%ecx=%#x, %%edx=%#x, %%esp=%#x\n",  istate->eax,istate->ecx,istate->edx,&istate->stack[0]);
1100 palkovsky 71
#ifdef CONFIG_DEBUG_ALLREGS
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    printf("%%esi=%#x, %%edi=%#x, %%ebp=%#x, %%ebx=%#x\n",  istate->esi,istate->edi,istate->ebp,istate->ebx);
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#endif
1221 decky 74
    printf("stack: %#x, %#x, %#x, %#x\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]);
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    printf("       %#x, %#x, %#x, %#x\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]);
1008 jermar 76
}
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958 jermar 78
void null_interrupt(int n, istate_t *istate)
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{
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    PRINT_INFO_ERRCODE(istate);
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    panic("unserviced interrupt: %d\n", n);
1 jermar 82
}
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1256 jermar 84
/** General Protection Fault. */
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void gp_fault(int n, istate_t *istate)
1 jermar 86
{
1256 jermar 87
    if (TASK) {
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        count_t ver;
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        spinlock_lock(&TASK->lock);
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        ver = TASK->arch.iomapver;
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        spinlock_unlock(&TASK->lock);
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        if (CPU->arch.iomapver_copy != ver) {
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            /*
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             * This fault can be caused by an early access
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             * to I/O port because of an out-dated
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             * I/O Permission bitmap installed on CPU.
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             * Install the fresh copy and restart
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             * the instruction.
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             */
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            io_perm_bitmap_install();
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            return;
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        }
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    }
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    PRINT_INFO_ERRCODE(istate);
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    panic("general protection fault\n");
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}
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958 jermar 111
void ss_fault(int n, istate_t *istate)
84 vana 112
{
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    PRINT_INFO_ERRCODE(istate);
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    panic("stack fault\n");
84 vana 115
}
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1019 vana 117
void simd_fp_exception(int n, istate_t *istate)
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{
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    PRINT_INFO_ERRCODE(istate);
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    __u32 mxcsr;
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    asm
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    (
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        "stmxcsr %0;\n"
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        :"=m"(mxcsr)
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    );
1196 cejka 127
    printf("MXCSR: %#zX\n",(__native)(mxcsr));
1019 vana 128
    panic("SIMD FP exception(19)\n");
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}
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958 jermar 131
void nm_fault(int n, istate_t *istate)
73 vana 132
{
458 decky 133
#ifdef CONFIG_FPU_LAZY     
309 palkovsky 134
    scheduler_fpu_lazy_request();
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#else
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    panic("fpu fault");
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#endif
73 vana 138
}
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958 jermar 140
void page_fault(int n, istate_t *istate)
1 jermar 141
{
703 jermar 142
    __address page;
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    page = read_cr2();
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    if (!as_page_fault(page)) {
958 jermar 146
        PRINT_INFO_ERRCODE(istate);
1221 decky 147
        printf("page fault address: %#x\n", page);
703 jermar 148
        panic("page fault\n");
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    }
1 jermar 150
}
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958 jermar 152
void syscall(int n, istate_t *istate)
1 jermar 153
{
1100 palkovsky 154
    panic("Obsolete syscall handler.");
1 jermar 155
}
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958 jermar 157
void tlb_shootdown_ipi(int n, istate_t *istate)
5 jermar 158
{
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    trap_virtual_eoi();
6 jermar 160
    tlb_shootdown_ipi_recv();
5 jermar 161
}
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1 jermar 163
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 168
        panic("no enable_irqs_function\n");
1 jermar 169
}
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171
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 176
        panic("no disable_irqs_function\n");
1 jermar 177
}
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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 184
        panic("no eoi_function\n");
1 jermar 185
 
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}