/*
* 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 <syscall/syscall.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 <proc/thread.h>
/*
* Interrupt and exception dispatching.
*/
void (* disable_irqs_function)(__u16 irqmask) = NULL;
void (* enable_irqs_function)(__u16 irqmask) = NULL;
void (* eoi_function)(void) = NULL;
#define PRINT_INFO_ERRCODE(st) { \
__native *x = (__native *) st; \
char *symbol = get_symtab_entry(x[1]); \
if (!symbol) \
symbol = ""; \
printf("----------------EXCEPTION OCCURED----------------\n"); \
printf("%%eip: %X (%s)\n",x[1],symbol); \
printf("ERROR_WORD=%X\n", x[0]); \
printf("%%cs=%X,flags=%X\n", x[2], x[3]); \
printf("%%eax=%X, %%ebx=%X, %%ecx=%X, %%edx=%X\n",\
x[-2],x[-5],x[-3],x[-4]); \
printf("%%esi=%X, %%edi=%X, %%ebp=%X, %%esp=%X\n",\
x[-8],x[-9],x[-1],x); \
printf("stack: %X, %X, %X, %X\n", x[4], x[5], x[6], x[7]); \
printf(" %X, %X, %X, %X\n", x[8], x[9], x[10], x[11]); \
}
void null_interrupt(int n, void *st)
{
__native *stack = (__native *) st;
printf("int %d: null_interrupt\n", n
); printf("stack: %L, %L, %L, %L\n", stack
[0], stack
[1], stack
[2], stack
[3]); panic("unserviced interrupt\n");
}
void gp_fault(int n, void *stack)
{
PRINT_INFO_ERRCODE(stack);
panic("general protection fault\n");
}
void ss_fault(int n, void *stack)
{
PRINT_INFO_ERRCODE(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, void *stack)
{
__address page;
page = read_cr2();
if (!as_page_fault(page)) {
PRINT_INFO_ERRCODE(stack);
printf("page fault address: %X\n", page
); panic("page fault\n");
}
}
void syscall(int n, void *st)
{
__native *stack = (__native *) st;
interrupts_enable();
if (stack[-2] < SYSCALL_END)
stack[-2] = syscall_table[stack[-2]](stack[-5], stack[-3], stack[-4]);
else
panic("Undefined syscall %d", stack[-2]);
interrupts_disable();
}
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");
}