/*
* 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 <arch.h>
#include <symtab.h>
/*
* Interrupt and exception dispatching.
*/
static iroutine ivt[IVT_ITEMS];
void (* disable_irqs_function)(__u16 irqmask) = NULL;
void (* enable_irqs_function)(__u16 irqmask) = NULL;
void (* eoi_function)(void) = NULL;
#define PRINT_INFO_ERRCODE(x) { \
char *symbol = get_symtab_entry(stack[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]); \
}
iroutine trap_register(__u8 n, iroutine f)
{
ASSERT(n < IVT_ITEMS);
iroutine old;
old = ivt[n];
ivt[n] = f;
return old;
}
/*
* Called directly from the assembler code.
* CPU is cpu_priority_high().
*/
void trap_dispatcher(__u8 n, __native stack[])
{
ASSERT(n < IVT_ITEMS);
ivt[n](n, stack);
}
void null_interrupt(__u8 n, __native stack[])
{
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(__u8 n, __native stack[])
{
PRINT_INFO_ERRCODE(stack);
panic("general protection fault\n");
}
void ss_fault(__u8 n, __native stack[])
{
PRINT_INFO_ERRCODE(stack);
panic("stack fault\n");
}
void nm_fault(__u8 n, __native stack[])
{
#ifdef FPU_LAZY
scheduler_fpu_lazy_request();
#else
panic("fpu fault");
#endif
}
void page_fault(__u8 n, __native stack[])
{
PRINT_INFO_ERRCODE(stack);
printf("page fault address: %X\n", read_cr2
()); panic("page fault\n");
}
void syscall(__u8 n, __native stack[])
{
printf("cpu%d: syscall\n", CPU
->id
); thread_usleep(1000);
}
void tlb_shootdown_ipi(__u8 n, __native stack[])
{
trap_virtual_eoi();
tlb_shootdown_ipi_recv();
}
void wakeup_ipi(__u8 n, __native stack[])
{
trap_virtual_eoi();
}
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");
}