/*
* 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>
#include <arch/asm.h>
static void messy_stack_trace(__native *stack)
{
__native *upper_limit = (__native *)(((__native)THREAD->kstack) + STACK_SIZE);
char *symbol;
while (stack < upper_limit) {
symbol = get_symtab_entry((__address)*stack);
if (symbol)
stack++;
}
}
static void print_info_errcode(__u8 n, __native x[])
{
char *symbol;
if (!(symbol=get_symtab_entry(x[1])))
symbol = "";
printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n
,__FUNCTION__
); printf("%%rip: %Q (%s)\n",x
[1],symbol
); printf("ERROR_WORD=%Q\n", x
[0]); printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", x
[2], x
[3],read_cr0
()); printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",x
[-2],x
[-3],x
[-4]); printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",x
[-5],x
[-6],x
[-7]); printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",x
[-8],x
[-9],x
[-10]); printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",x
[-11],x
[-12],x
[-13]); printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",x
[-14],x
[-15],x
); 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]); printf(" %Q, %Q, %Q\n", x
[17], x
[18], x
[19]); printf(" %Q, %Q, %Q\n", x
[20], x
[21], x
[22]); printf(" %Q, %Q, %Q\n", x
[23], x
[24], x
[25]); messy_stack_trace(&x[5]);
}
/*
* 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;
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("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n
,__FUNCTION__
); \
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(n,stack);
panic("general protection fault\n");
}
void ss_fault(__u8 n, __native stack[])
{
print_info_errcode(n,stack);
panic("stack fault\n");
}
void nm_fault(__u8 n, __native stack[])
{
reset_TS_flag();
if (CPU->fpu_owner != NULL) {
fpu_lazy_context_save(&CPU->fpu_owner->saved_fpu_context);
/* don't prevent migration */
CPU->fpu_owner->fpu_context_engaged=0;
}
if (THREAD->fpu_context_exists)
fpu_lazy_context_restore(&THREAD->saved_fpu_context);
else {
fpu_init();
THREAD->fpu_context_exists=1;
}
CPU->fpu_owner=THREAD;
THREAD->fpu_context_engaged = 1;
}
void page_fault(__u8 n, __native stack[])
{
print_info_errcode(n,stack);
printf("Page fault address: %Q\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");
}