source: mainline/arch/amd64/src/interrupt.c@ d3e7ff4

/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <arch/interrupt.h>
#include <print.h>
#include <debug.h>
#include <panic.h>
#include <arch/i8259.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/tlb.h>
#include <mm/as.h>
#include <arch.h>
#include <symtab.h>
#include <arch/asm.h>
#include <proc/scheduler.h>
#include <proc/thread.h>

static void print_info_errcode(int n, istate_t *istate)
{
        char *symbol;
        __u64 *x = &istate->stack[0];

        if (!(symbol=get_symtab_entry(x[1])))
                symbol = "";

        printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__);
        printf("%%rip: %Q (%s)\n",istate->stack[1],symbol);
        printf("ERROR_WORD=%Q\n", istate->stack[0]);
        printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", istate->stack[2], 
               istate->stack[3],read_cr0());
        printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",istate->rax,istate->rbx,istate->rcx);
        printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",istate->rdx,istate->rsi,istate->rdi);
        printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",istate->r8,istate->r9,istate->r10);
        printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",istate->r11,istate->r12,istate->r13);
        printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",istate->r14,istate->r15,&istate->stack[0]);
        printf("%%rbp=%Q\n",istate->rbp);
        printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]);
        printf("       %Q, %Q, %Q\n", x[8], x[9], x[10]);
        printf("       %Q, %Q, %Q\n", x[11], x[12], x[13]);
        printf("       %Q, %Q, %Q\n", x[14], x[15], x[16]);
}

/*
 * Interrupt and exception dispatching.
 */

void (* disable_irqs_function)(__u16 irqmask) = NULL;
void (* enable_irqs_function)(__u16 irqmask) = NULL;
void (* eoi_function)(void) = NULL;

void null_interrupt(int n, istate_t *istate)
{
        printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__); \
        printf("stack: %X, %X, %X, %X\n", istate->stack[0], istate->stack[1],
               istate->stack[2], istate->stack[3]);
        panic("unserviced interrupt\n");
}

void gp_fault(int n, istate_t *istate)
{
        print_info_errcode(n, istate);
        panic("general protection fault\n");
}

void ss_fault(int n, istate_t *istate)
{
        print_info_errcode(n, istate);
        panic("stack fault\n");
}


void nm_fault(int n, istate_t *istate)
{
#ifdef CONFIG_FPU_LAZY     
        scheduler_fpu_lazy_request();
#else
        panic("fpu fault");
#endif
}

void page_fault(int n, istate_t *istate)
{
        __address page;
        
        page = read_cr2();
        if (!as_page_fault(page)) {
                print_info_errcode(n, istate);
                printf("Page fault address: %Q\n", page);
                panic("page fault\n");
        }
}

void tlb_shootdown_ipi(int n, istate_t *istate)
{
        trap_virtual_eoi();
        tlb_shootdown_ipi_recv();
}

void trap_virtual_enable_irqs(__u16 irqmask)
{
        if (enable_irqs_function)
                enable_irqs_function(irqmask);
        else
                panic("no enable_irqs_function\n");
}

void trap_virtual_disable_irqs(__u16 irqmask)
{
        if (disable_irqs_function)
                disable_irqs_function(irqmask);
        else
                panic("no disable_irqs_function\n");
}

void trap_virtual_eoi(void)
{
        if (eoi_function)
                eoi_function();
        else
                panic("no eoi_function\n");

}