/*
* 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/drivers/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>
#include <proc/task.h>
#include <synch/spinlock.h>
#include <arch/ddi/ddi.h>
#include <ipc/sysipc.h>
#include <interrupt.h>
/*
* Interrupt and exception dispatching.
*/
void (* disable_irqs_function)(__u16 irqmask) = NULL;
void (* enable_irqs_function)(__u16 irqmask) = NULL;
void (* eoi_function)(void) = NULL;
void PRINT_INFO_ERRCODE(istate_t *istate)
{
char *symbol = get_symtab_entry(istate->eip);
if (!symbol)
symbol = "";
if (CPU)
printf("----------------EXCEPTION OCCURED (cpu%d)----------------\n", CPU
->id
); else
printf("----------------EXCEPTION OCCURED----------------\n");
printf("%%eip: %#x (%s)\n",istate
->eip
,symbol
); printf("ERROR_WORD=%#x\n", istate
->error_word
); printf("%%cs=%#x,flags=%#x\n", istate
->cs
, istate
->eflags
); printf("%%eax=%#x, %%ecx=%#x, %%edx=%#x, %%esp=%#x\n", istate
->eax
,istate
->ecx
,istate
->edx
,&istate
->stack
[0]); #ifdef CONFIG_DEBUG_ALLREGS
printf("%%esi=%#x, %%edi=%#x, %%ebp=%#x, %%ebx=%#x\n", istate
->esi
,istate
->edi
,istate
->ebp
,istate
->ebx
); #endif
printf("stack: %#x, %#x, %#x, %#x\n", istate
->stack
[0], istate
->stack
[1], istate
->stack
[2], istate
->stack
[3]); printf(" %#x, %#x, %#x, %#x\n", istate
->stack
[4], istate
->stack
[5], istate
->stack
[6], istate
->stack
[7]); }
void null_interrupt(int n, istate_t *istate)
{
fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
PRINT_INFO_ERRCODE(istate);
panic("unserviced interrupt: %d\n", n);
}
/** General Protection Fault. */
void gp_fault(int n, istate_t *istate)
{
if (TASK) {
count_t ver;
spinlock_lock(&TASK->lock);
ver = TASK->arch.iomapver;
spinlock_unlock(&TASK->lock);
if (CPU->arch.iomapver_copy != ver) {
/*
* This fault can be caused by an early access
* to I/O port because of an out-dated
* I/O Permission bitmap installed on CPU.
* Install the fresh copy and restart
* the instruction.
*/
io_perm_bitmap_install();
return;
}
fault_if_from_uspace(istate, "general protection fault");
}
PRINT_INFO_ERRCODE(istate);
panic("general protection fault\n");
}
void ss_fault(int n, istate_t *istate)
{
fault_if_from_uspace(istate, "stack fault");
PRINT_INFO_ERRCODE(istate);
panic("stack fault\n");
}
void simd_fp_exception(int n, istate_t *istate)
{
__u32 mxcsr;
asm
(
"stmxcsr %0;\n"
:"=m"(mxcsr)
);
fault_if_from_uspace(istate, "SIMD FP exception(19), MXCSR: %#zX",
(__native)mxcsr);
PRINT_INFO_ERRCODE(istate);
printf("MXCSR: %#zX\n",(__native
)(mxcsr
)); panic("SIMD FP exception(19)\n");
}
void nm_fault(int n, istate_t *istate)
{
#ifdef CONFIG_FPU_LAZY
scheduler_fpu_lazy_request();
#else
fault_if_from_uspace(istate, "fpu fault");
panic("fpu fault");
#endif
}
void syscall(int n, istate_t *istate)
{
panic("Obsolete syscall handler.");
}
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");
}
static void ipc_int(int n, istate_t *istate)
{
ipc_irq_send_notif(n-IVT_IRQBASE);
trap_virtual_eoi();
}
/* Reregister irq to be IPC-ready */
void irq_ipc_bind_arch(__native irq)
{
if (irq == IRQ_CLK)
return;
trap_virtual_enable_irqs(1 << irq);
exc_register(IVT_IRQBASE+irq, "ipc_int", ipc_int);
}