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/*

 * 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(istate->rip)))

        symbol = "";

    printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__);

    printf("%%rip: %Q (%s)\n",istate->rip, symbol);

    printf("ERROR_WORD=%Q\n", istate->error_word);

    printf("%%rcs=%Q, flags=%Q, %%cr0=%Q\n", istate->cs, istate->rflags,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)

{

    print_info_errcode(n, istate);

    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");

}