287 lines
7.1 KiB
C
287 lines
7.1 KiB
C
/*******************************************************************************/
|
|
/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
|
|
/* */
|
|
#include "interrupts.h"
|
|
#include "types.h"
|
|
#include "asm.h"
|
|
#include "memory.h"
|
|
#include "video.h"
|
|
#include "gdt.h"
|
|
#include "system.h"
|
|
#include "debug.h"
|
|
#include "process.h"
|
|
|
|
/******************************************************************************/
|
|
/* Déclenché lors de l'appel d'une interruption */
|
|
|
|
__attribute__((interrupt)) void interruption(exception_stack_noerror *caller)
|
|
{
|
|
print("Appel d'une interruption\r\n");
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Les expections */
|
|
|
|
static u8 ex14_errors1[] =
|
|
"Supervisory process tried to read a non-present page entry";
|
|
static u8 ex14_errors2[] =
|
|
"Supervisory process tried to read a page and caused a protection fault";
|
|
static u8 ex14_errors3[] =
|
|
"Supervisory process tried to write to a non-present page entry";
|
|
static u8 ex14_errors4[] =
|
|
"Supervisory process tried to write a page and caused a protection fault";
|
|
static u8 ex14_errors5[] =
|
|
"User process tried to read a non-present page entry";
|
|
static u8 ex14_errors6[] =
|
|
"User process tried to read a page and caused a protection fault";
|
|
static u8 ex14_errors7[] =
|
|
"User process tried to write to a non-present page entry";
|
|
static u8 ex14_errors8[] =
|
|
"User process tried to write a page and caused a protection fault";
|
|
static u8 *ex14_errors[] =
|
|
{ &ex14_errors1, &ex14_errors2, &ex14_errors3, &ex14_errors4,
|
|
&ex14_errors5, &ex14_errors6, &ex14_errors7, &ex14_errors8
|
|
};
|
|
|
|
__attribute__ ((noreturn)) void exception_handler(regs *dump)
|
|
{
|
|
u32 exception=dump->eip;
|
|
exception_stack_noerror *caller = (exception_stack_noerror*) ((u32*)dump->esp+1);
|
|
bool noerror,user;
|
|
if (caller->cs==SEL_KERNEL_CODE || caller->cs==SEL_USER_CODE)
|
|
{
|
|
noerror=true;
|
|
dump->eip = caller->eip;
|
|
dump->cs = caller->cs;
|
|
dump->eflags = caller->eflags;
|
|
if (dump->cs==SEL_KERNEL_CODE)
|
|
{
|
|
dump->esp = (u32) caller + sizeof(exception_stack_noerror);
|
|
user=false;
|
|
}
|
|
else
|
|
{
|
|
dump->esp = (u32) ((exception_stack_noerror_user*) caller)->esp;
|
|
dump->ss = (u32) ((exception_stack_noerror_user*) caller)->ss;
|
|
user=true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
noerror=false;
|
|
dump->eip = ((exception_stack*)caller)->eip;
|
|
dump->cs = ((exception_stack*)caller)->cs;
|
|
if (dump->cs==SEL_KERNEL_CODE)
|
|
{
|
|
dump->esp = (u32) caller + sizeof(exception_stack);
|
|
user=false;
|
|
}
|
|
else
|
|
{
|
|
dump->esp = (u32) ((exception_stack_user*) caller)->esp;
|
|
dump->ss = (u32) ((exception_stack_user*) caller)->ss;
|
|
user=true;
|
|
}
|
|
}
|
|
switch (exception)
|
|
{
|
|
case 0:
|
|
cpuerror("#DE Divide error", dump, false);
|
|
case 1:
|
|
changevc(6);
|
|
clearscreen();
|
|
show_lightcpu(dump);
|
|
printf("\r\n\033[7m[P]\033[0m PAS A PAS \033[7m D \033[0m PAS A PAS DETAILLE \033[7m C \033[0m CONTINUER \033[7m S \033[0m STOPPER \033[7m V \033[0m VOIR \033[7m S \033[0m SCINDER");
|
|
sti();
|
|
u8 ascii = waitascii();
|
|
cli();
|
|
if (ascii == 'P' || ascii == 'p')
|
|
setdebugreg(0,
|
|
caller->eip + disasm(caller->eip, NULL, false),
|
|
DBG_EXEC);
|
|
else if (ascii == 'D' || ascii == 'd')
|
|
setdebugreg(0, 0, DBG_CLEAR);
|
|
else if (ascii == 'C' || ascii == 'c')
|
|
setdebugreg(0, 0, DBG_CLEAR);
|
|
else if (ascii == 'S' || ascii == 's')
|
|
{
|
|
changevc(0);
|
|
sti();
|
|
initselectors(getinitretry());
|
|
}
|
|
changevc(0);
|
|
goto endofexception;
|
|
case 2:
|
|
cpuerror("NMI Non-maskable hardware interrupt", dump, false);
|
|
case 3:
|
|
cpuerror("#BP INT3 instruction", dump, true);
|
|
iret();
|
|
case 4:
|
|
cpuerror("#OF INTO instruction detected overflow", dump, false);
|
|
case 5:
|
|
cpuerror("#BR BOUND instruction detected overrange", dump, false);
|
|
case 6:
|
|
cpuerror("#UD Invalid instruction opcode", dump, false);
|
|
case 7:
|
|
cpuerror("#NM No coprocessor", dump, false);
|
|
case 8:
|
|
cpuerror("#DF Double fault", dump, false);
|
|
case 9:
|
|
cpuerror("Coprocessor segment overrun", dump, false);
|
|
case 10:
|
|
cpuerror("#TS Invalid task state segment (TSS)", dump, false);
|
|
case 11:
|
|
cpuerror("#NP Segment not present", dump, false);
|
|
case 12:
|
|
cpuerror("#SS Stack fault", dump, false);
|
|
case 13:
|
|
cpuerror("#GP General protection fault (GPF)", dump, false);
|
|
case 14:
|
|
if (dump->cr2 >= USER_CODE && dump->cr2 < USER_STACK)
|
|
{
|
|
virtual_range_new(getcurrentprocess()->pdd,
|
|
(u8 *) (dump->cr2 & 0xFFFFF000),
|
|
PAGESIZE, PAGE_ALL);
|
|
}
|
|
else
|
|
{
|
|
printf("Page fault - %s at adress %Y cs:eip - %Y:%Y\r\n",
|
|
ex14_errors[((exception_stack*) caller)->error_code & 0xF], dump->cr2,
|
|
dump->cs, dump->eip);
|
|
cpuerror("#PGF Page fault", dump, false);
|
|
}
|
|
goto endofexception;
|
|
case 15:
|
|
cpuerror("(reserved)", dump, false);
|
|
case 16:
|
|
cpuerror("#MF Coprocessor error", dump, false);
|
|
case 17:
|
|
cpuerror("#AC Alignment check", dump, false);
|
|
case 18:
|
|
cpuerror("#MC Machine check", dump, false);
|
|
}
|
|
endofexception:
|
|
if (dump->cs==SEL_KERNEL_CODE)
|
|
{
|
|
setESP(dump);
|
|
restcpu_kernel();
|
|
}
|
|
else
|
|
{
|
|
setESP(dump);
|
|
restcpu_user();
|
|
iret();
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Les IRQ par défaut */
|
|
|
|
__attribute__((interrupt)) void irq0(exception_stack_noerror *caller)
|
|
{ print("irq 0");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq1(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 1");
|
|
while ((inb(0x64) & 1) == 0);
|
|
inb(0x60);
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq2(exception_stack_noerror *caller)
|
|
{ print("irq 2");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq3(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 3");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq4(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 4");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq5(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 5");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq6(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 6");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq7(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 7");
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq8(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 8");
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq9(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 9");
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq10(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 10");
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq11(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 11");
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq12(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 12");
|
|
while ((inb(0x64) & 1) == 0);
|
|
inb(0x60);
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq13(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 13");
|
|
irqendslave();
|
|
irqendmaster();
|
|
popad();
|
|
popf();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq14(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 14");
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|
|
|
|
__attribute__((interrupt)) void irq15(exception_stack_noerror *caller)
|
|
{
|
|
print("irq 15");
|
|
irqendslave();
|
|
irqendmaster();
|
|
}
|