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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 messy_stack_trace(__native *stack)

{

	__native *upper_limit = (__native *)(((__native)get_stack_base()) + STACK_SIZE);

	char *symbol;

	printf("Stack contents: ");

	while (stack < upper_limit) {

		symbol = get_symtab_entry((__address)*stack);

		if (symbol)

			printf("%s, ", symbol);

		stack++;

	}

	printf("\n");

}

*/

static void print_info_errcode(int n, struct interrupt_context *ctx)

{

	char *symbol;

	__u64 *x = &ctx->stack[0];

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

		symbol = "";

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

	printf("%%rip: %Q (%s)\n",ctx->stack[1],symbol);

	printf("ERROR_WORD=%Q\n", ctx->stack[0]);

	printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", ctx->stack[2], 

	       ctx->stack[3],read_cr0());

	printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",ctx->rax,ctx->rbx,ctx->rcx);

	printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",ctx->rdx,ctx->rsi,ctx->rdi);

	printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",ctx->r8,ctx->r9,ctx->r10);

	printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",ctx->r11,ctx->r12,ctx->r13);

	printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",ctx->r14,ctx->r15,&ctx->stack[0]);

	printf("%%rbp=%Q\n",ctx->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]);

//	messy_stack_trace(&x[5]);

}

/*

 * 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, struct interrupt_context *ctx)

{

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

	printf("stack: %X, %X, %X, %X\n", ctx->stack[0], ctx->stack[1],

	       ctx->stack[2], ctx->stack[3]);

	panic("unserviced interrupt\n");

}

void gp_fault(int n, void *stack)

{

	print_info_errcode(n,stack);

	panic("general protection fault\n");

}

void ss_fault(int n, void *stack)

{

	print_info_errcode(n,stack);

	panic("stack fault\n");

}

void nm_fault(int n, void *stack)

{

#ifdef CONFIG_FPU_LAZY     

	scheduler_fpu_lazy_request();

#else

	panic("fpu fault");

#endif

}

void page_fault(int n, struct interrupt_context *ctx)

{

	__address page;

	page = read_cr2();

	if (!as_page_fault(page)) {

		print_info_errcode(n,ctx);

		printf("Page fault address: %Q\n", page);

		panic("page fault\n");

	}

}

void tlb_shootdown_ipi(int n, void *stack)

{

	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");

}