void fault_handler(regs_t *r) {
#ifdef PROFILE_DEBUG
dbg_printf("\n\n!!! FAULT %i(%i) - %s !!!\n\n", r->int_no, r->err_code, exception_messages[r->int_no]);
dbg_printf("--- CORE DUMP -----------------------------------------------------\n");
dbg_printf("eax: %p, ebx: %p, ecx: %p, edx: %p\n", r->eax, r->ebx, r->ecx, r->edx);
dbg_printf("esp: %p, ebp: %p, esi: %p, edi: %p\n", r->esp, r->ebp, r->esi, r->edi);
dbg_printf("cs: %p, ss: %p, ds: %p, es: %p\n", r->cs, r->ss, r->ds, r->es);
dbg_printf("fs: %p, gs: %p, eip: %p, eflags: %b\n", r->fs, r->gs, r->eip, r->eflags);
#endif
kclear();
kprintf("\n\n!!! FAULT %i(%i) - %s !!!\n\n", r->int_no, r->err_code, exception_messages[r->int_no]);
kprintf("--- CORE DUMP -----------------------------------------------------\n");
kprintf("eax: %p, ebx: %p, ecx: %p, edx: %p\n", r->eax, r->ebx, r->ecx, r->edx);
kprintf("esp: %p, ebp: %p, esi: %p, edi: %p\n", r->esp, r->ebp, r->esi, r->edi);
kprintf("cs: %p, ss: %p, ds: %p, es: %p\n", r->cs, r->ss, r->ds, r->es);
kprintf("fs: %p, gs: %p, eip: %p, eflags: %b\n", r->fs, r->gs, r->eip, r->eflags);
// The stubs do an iRet because i am sure i will have
// some fault hanlders return back. I might even do a vector map
// so that things like the PMEM code can assert there own fault_handler
// for specific interrupts.
halt();
}
// Kernel entry point
void _main(struct multiboot *mboot_ptr, uint32_t initial_stack) {
// Clear screen to get rid of boot messages.
kclear();
// Initialise all the ISRs and segmentation.
init_dt();
// Some print tests.
kprintf("Boot successfull\n");
int num = 36;
printf("Integer \"num\" = %i.\n", num);
printf("Initial kernel stack is: %i\n", initial_stack);
// Test the interrupts.
printf("Testing interrupts\n");
test_interrupts();
// Initialize interrupts.
printf("Initializing Interrupts\n");
init_interrupts();
printf("The kernel has booted\n");
// Start the timer.
init_timer(50);
for(;;) { }
}
void eqraos_screen() {
kclear(0x13);
kgoto_xy(0,0);
kset_color(0x3F);
kputs(" eqraOS v0.1 ");
//kgoto_xy(0,1);
//kputs(" Ahmad Essam [[email protected]] ");
kgoto_xy(0,24);
kset_color(0x3F);
kputs(" ");
kgoto_xy(0,3);
}
void kmain(uint32_t magic) {
if ( magic != 0x2BADB002 )
{
print("Something went not according to specs.");
exit();
}
kclear();
char printbuf[256];
snprintf(printbuf, 256, "kernel loaded at %p, ends at %p\n", kernel_start, kernel_end);
print(printbuf);
print("initializing GDT...\n");
init_gdt();
print("initializing IDT...\n");
init_idt();
print("initializing physical memory manager...\n");
init_pmm();
if (pmm_is_free((paddr_t)kernel_start) || pmm_is_free((paddr_t)kernel_end)) panic("kernel memory is not reserved");
if (pmm_is_free((paddr_t)0xb8000)) panic("video ram is not reserved");
print("initializing virtual memory manager...\n");
init_vmm();
print("initializing PICs...\n");
init_pics(0x20, 0x28);
print("initializing keyboard...\n");
init_keyboard();
print("enabling keyboard interrupts...\n");
enable_irq(1);
send_eoi(0);
__asm__ __volatile__ ("sti");
print("initializing symbol table...\n");
init_stacktrace();
print("initializing timer...\n");
init_timer(10);
enable_irq(0);
print("initializing speaker...\n");
print("initializing ACPI...\n");
init_acpi();
print("reclaiming ACPI memory...\n");
acpi_reclaim_memory();
print("initializing shell...\n");
init_shell_builtins();
beep(100, 100);
cprint("Hello OS\n", 2);
update_cursor();
shell();
}
void _cdecl kernel_panic(const char* msg,...) {
disable_irq();
va_list args;
va_start(args,msg);
/* missing */
va_end(args);
char* panic = "\nSorry, eqraOS has encountered a problem and has been shutdown.\n\n";
kclear(0x1f);
kgoto_xy(0,0);
kset_color(0x1f);
kputs(panic);
kprintf("*** STOP: %s",msg);
/* hang */
for (;;) ;
}
/*!
* \brief Clear screen
*
* This function clears the console
*/
void clear() {
kclear();
}
