unsigned int memtest(multiboot_info_t* mbd, unsigned int magic)
{
magic = (int) magic;
terminal_writestring(MULTIBOOT_TEST);
if (CHECK_BIT(mbd->flags, 0))
{
vgatestok();
terminal_writestring(MEMORY_MAP_TEST);
if (CHECK_BIT(mbd->flags, 6))
{
vgatestok();
terminal_printf("\nLower memory : %d KB\n", mbd->mem_lower);
terminal_printf("Upper memory : %d KB\n\n", mbd->mem_upper);
}
else
{
vgatestko();
return (1);
}
return (0);
}
vgatestko();
return (1);
}
void terminalWriteHexLong(unsigned int upper, unsigned int lower){
char string[12];
terminal_writestring("0x");
terminal_writestring(intToString(upper, string, 16));
terminal_writestring(" ");
terminal_writestring(intToStringPadded(lower, string, 16));
}
void kernel_main() {
/* Initialize terminal interface */
terminal_initialize();
/* Since there is no support for newlines in terminal_putchar
* yet, '\n' will produce some VGA specific character instead.
* This is normal.
*/
char buffer[8];
for (int i = 1; i <= 100; i++) {
if (i % 3 == 0 && i % 5 == 0) {
terminal_writestring("FizzBuzz");
} else if (i % 3 == 0) {
terminal_writestring("Fizz");
} else if (i % 5 == 0) {
terminal_writestring("Buzz");
} else {
terminal_writestring(itoa(i, buffer, 10));
}
if (i < 100) {
terminal_writestring(", ");
}
}
}
// This gets called from our ASM interrupt handler stub.
void
isr_handler(err_t *err) {
terminal_writestring("received interrupt: ");
terminal_writenum(err->int_no);
terminal_writestring(", ");
terminal_writenum(err->err_code);
terminal_writestring("\n");
}
void terminal_test() {
size_t i;
terminal_writestring(test_string);
for(i = 0; i < VGA_HEIGHT; i++) {
terminal_writestring("Hello Mehta\n");
}
terminal_writestring(test_string);
}
void kernel_main() {
//init terminal
terminal_initialize();
terminal_writestring("1Hello world! IT'S ALIVE!!!\n2Newline testing...\n3It works.");
terminal_writestring("\n4\n5\n6wew\n7ewe\n8wew\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24 lines. Next one should mess things up.");
terminal_writestring("\n25First ruiner");
terminal_writestring("\n26Second ruiner");
}
void kernel_main() {
terminal_initialize();
terminal_writestring("--< Kernel >--\n");
for (int i = 0; i < 50; i++) {
terminal_writestring("Hello, World!\n");
}
}
void kernel_main() {
/* Initialize terminal interface */
terminal_initialize();
/* Since there is no support for newlines in terminal_putchar
* yet, '\n' will produce some VGA specific character instead.
* This is normal.
*/
terminal_writestring("Hello, my name is Tanner. I am 16 years old, and this is my operating system!\n");
terminal_writestring("This should be on a new line.\n");
}
void kernel_main() {
/* Initialize terminal interface */
terminal_initialize();
terminal_writestring("You shouldn't see this string if scrolling works...\n");
for (size_t row = 0; row < VGA_HEIGHT - 1; row++) {
terminal_writerainbow("Hello kernel world!\n");
}
terminal_setcolor(COLOR_LIGHT_GREY);
terminal_writestring("Reached bottom of terminal");
}
// memblock_inspect - print linked list overview
// This function traverses the list and prints debugging info (struct data members) to console.
void memblock_inspect() {
#ifdef DEBUG
k_heap_blk* blk = heap.start;
while((blk != NULL)) { // Don't compress the first or last block in the heap.
kprintf("Heap block located at 0x%x:\nblk->prev: 0x%x\nblk->next: 0x%x", (size_t)blk, (size_t)blk->prev, (size_t)blk->next);
if(blk->used)
terminal_writestring("\nBlock marked as \'used\'.\n");
else
terminal_writestring("\nBlock marked as \'free\'.\n");
blk = blk->next;
}
#endif
}
void kernel_main() {
/* Initialize terminal interface */
terminal_initialize();
/* Since there is no support for newlines in terminal_putchar
* yet, '\n' will produce some VGA specific character instead.
* This is normal.
*/
terminal_writestring("Hello, hielep!\n");
terminal_writestring("Hello, hfdsfdsp!\n");
}
void init_gdt()
{
terminal_writestring("Initiating GDT... ");
gdt_ptr.limit = (sizeof(gdt_entry_t) * 3) - 1;
gdt_ptr.base = (uint32_t)&gdt_entries;
gdt_set_gate(0, 0, 0, 0, 0); // Null segment
gdt_set_gate(1, 0, 0xFFFFFFFF, 0x9A, 0xCF); // Kernel code segment
gdt_set_gate(2, 0, 0xFFFFFFFF, 0x92, 0xCF); // Kernel data segment
gdt_flush((uint32_t)&gdt_ptr);
terminal_writestring("DONE\n");
}
void schedule_exit()
{
curr_task->state = TSK_Exited;
curr_task->time_slice = 0;
task_context_t* stack = (task_context_t*)(curr_task->esp);
int retval = stack->eax;
terminal_writestring("Task exited ");
terminal_writeuint32(retval);
terminal_writestring("\n");
schedule();
curr_task = next_task;
resume_task();
}
void schedule_kill()
{
curr_task->state = TSK_Terminated;
terminal_writestring("Killed task: \n");
task_print(curr_task);
schd_task_del(curr_task);
schedule();
curr_task = next_task;
terminal_writestring("Resuming\n");
bochs_break();
resume_task();
}
void kernel_early(multiboot_t *mboot, uint32_t magic, uintptr_t esp)
{
initialize_terminal();
terminal_writestring("[TTY] ... \x1b[32mDONE\n\x1b[00m[GDT] ... ");
initialize_gdt();
terminal_writestring("\x1b[32mDONE\n\x1b[00m[IDT] ... ");
initialize_idt();
terminal_writestring("\x1b[32mDONE\n\x1b[00m[IRQ] ... ");
initialize_irq();
__asm__ __volatile__("sti");
terminal_writestring("\x1b[32mDONE\n\x1b[00m[PAGE] ... ");
initialize_paging(mboot->mem_upper + mboot->mem_lower);
terminal_writestring("\x1b[32mDONE\n\x1b[00m");
}
void kernel_main()
{
terminal_initialize();
/* Since there is no support for newlines in terminal_putchar yet, \n will
produce some VGA specific character instead. This is normal. */
terminal_writestring("Hello, kernel World!\n");
}
void kmain()
{
terminal_initialize();
terminal_writestring("H\ne\nl\nl\no\nk\nH\ne\nl\nl\no\nk\nH\ne\nl\nl\no\nk\nH\ne\nl\nl\no\nk\nH\ne\nA\np");
}
void kernel_main(unsigned int ebx)
{
mbinfo = (multiboot_info_t *) ebx;
// module_address = mbinfo->mods_addr;
/* Initialize terminal interface */
terminal_initialize();
idt_init();
/* Newline support is left as an exercise. */
terminal_writestring("FuseOS v.0.0.1\n");
terminal_writestring("Enabling Interrupts\n");
if(mbinfo->mods_count == 1) {
terminal_writestring("Module Count = 1, Sample Program can be loaded\n");
}
for(;;);
}
void schedule()
{
if (!heapLenght)
{
terminal_writestring("No more tasks!");
__asm__ volatile("jmp loop\n\t");
}
void kernel_main() {
/* Initialize terminal interface */
terminal_initialize();
/* since there is no support for newlines in terminal_putchar
* yet, '\n' will prouce some VGA specific character instead.
* This is normal.
*/
terminal_writestring("A single step.\n");
}
void print_requirement(const char *text, bool have) {
terminal_setcolor(make_color(FGCOLOR, BGCOLOR));
terminal_printf(" - %s ", text);
size_t textlen = strlen(text);
for (size_t pneed = textlen; pneed < 32; pneed++) {
terminal_putchar('.');
}
terminal_putchar('[');
if (have) {
terminal_setcolor(make_color(COLOR_GREEN, BGCOLOR));
terminal_writestring("OK");
} else {
terminal_setcolor(make_color(COLOR_RED, BGCOLOR));
terminal_writestring("FAIL");
}
terminal_setcolor(make_color(FGCOLOR, BGCOLOR));
terminal_writestring("]\n");
}
void drawImage(enum vga_color img[25][80])
{
size_t x, y;
for (x = 0; x < 80; ++x)
{
for (y = 0; y < 25; ++y)
{
terminal_set_pos(x,y);
terminal_setcolor(0, img[y][x]);
terminal_writestring(" ");
}
}
}
void kernel_main() {
gdt_install();
idt_install();
isrs_install();
irq_install();
terminal_initialize();
memory_manager_init();
enable_interrupts();
timer_install();
keyboard_install();
shell_init();
terminal_writestring("Hello, kernel World!\n");
terminal_writestring("Here is some text in a new line\n");
terminal_writestring("Here is some more text\n");
terminal_writestring("Here is a new line\n");
terminal_writestring("Here is some text after terminal scroll\n");
char str[] = "A string";
char ch = 'c';
int integer = 45;
printf("This is a test for printf.\nThis is a char %c and this a string %s\n", ch, str);
printf("This is an int %d. This is the same in hex %x\n", integer, integer);
for (size_t i = 0; i < 5; i++) {
printf("This is line number %d\n", i);
}
puts("waiting for 2 sec\n");
timer_wait(2);
puts("waiting complete\n");
char buffer[200];
gets(buffer);
printf("%s\n", buffer);
while(1) {
shell();
}
}
static int lua_writeout_proxy(lua_State *st) {
int n_args = lua_gettop(st);
unsigned int ret = 0;
for(int i=1;i<=n_args;i++) {
if( lua_isstring(st, i) ) {
const char *out = lua_tostring(st, i);
terminal_writestring(const_cast<char*>(out));
ret += strlen(const_cast<char*>(out));
}
}
terminal_putchar('\n');
lua_pushnumber(st, ret);
return 1;
}
// This function handles all interrupts.
void fault_handler(struct regs *r)
{
dbgprint("interrupt!\n");
if (interrupt_handlers[r->int_no] != 0) {
(interrupt_handlers[r->int_no]) (r->int_no, r->int_no); // not sure what the second param is for...
return;
}
// unhandled!
// Is this a fault whose number is from 0 to 31?
if (r->int_no < 32)
{
if (!current) {
if (r->int_no == 2) {
// it's an NMI. oh noes
// we shouldn't do much other than text, to avoid triggering the faulty hardware again
terminal_initialize(); // clear terminal
terminal_setcolor(COLOR_RED); // set it to a spooky color
// show scary message for scary error
terminal_writestring("*** NON-MASKABLE INTERRUPT OCCURRED ***\n\n");
terminal_writestring("To protect your computer and data, HexOS has stopped.\n\n");
terminal_writestring("A critical non-recoverable and non-maskable hardware interrupt has occurred. This may mean that your computer's hardware is defective. If this error occurs multiple times, try isolating the problem by removing and/or replacing components.");
while (1) {}
}
printf("Error code: %d\n", r->err_code);
// Display the description for the Exception that occurred.
panic(exception_messages[r->int_no]);
for (;;);
} else {
// TODO: signal the process rather than kill it
process_exit(-1, exception_messages[r->int_no]); // kill the process
}
}
}
void kernel_init(multiboot_info_t* mb_info, unsigned int magic) {
terminal_initialize();
terminal_writestring("Project Omamori now starting...\n");
gdt_init();
idt_init();
initialize_vmem_allocator();
k_heap_init();
initialize_pageframes(mb_info);
// do global constructor setup
kprintf("Calling global constructors.\n");
size_t *current = (size_t*)((size_t)&__CTOR_LIST__+4); // skip the first function pointer
int n_constructors_called = 1;
while(true) {
if(*current == 0)
break;
//kprintf("Calling constructor %u at address 0x%x.\n", (unsigned long long int)n_constructors_called, ((unsigned long long int)*current) );
void(*func)(void) = (void(*)(void))(*current);
func();
current++;
n_constructors_called++;
}
kprintf("Called %u global constructors.\n", (unsigned long long int)n_constructors_called);
//system_halt;
kprintf("Kernel begins at physical address 0x%x, corresponding to pageframe ID %u.\n", (unsigned long long int)(&kernel_start_phys), (unsigned long long int)(pageframe_get_block_from_addr( (size_t)&kernel_start_phys )) );
kprintf("Kernel ends at physical address 0x%x, corresponding to pageframe ID %u.\n", (unsigned long long int)(&kernel_end_phys), (unsigned long long int)(pageframe_get_block_from_addr( (size_t)&kernel_end_phys )) );
terminal_writestring("\nInitializing PICs.\n");
pic_initialize(PIC_IRQ_OFFSET_1, PIC_IRQ_OFFSET_2);
set_all_irq_status(true);
terminal_writestring("Initializing PIT.\n");
pit_initialize(PIT_DEFAULT_FREQ_DIVISOR);
//system_halt
}
void drawBox(size_t minX, size_t minY, size_t maxX, size_t maxY, enum vga_color fg, enum vga_color bg)
{
size_t x, y;
terminal_setcolor(fg, bg);
for (x = minX; x < maxX; ++x)
{
for (y = minY; y < maxY; ++y)
{
terminal_set_pos(x, y);
terminal_writestring(" ");
}
}
}
void init_scheduler()
{
terminal_writestring("Initializing scheduler\n");
memzero(tasks, sizeof(task_t*)*SCHEDULER_MAX_TASKS);
//Initialize jump array
tasks[0] = (void*)SCHEDULER_MAX_TASKS;
curr_task = 0;
next_task = 0;
set_idt_desc(IRQ_OFFSET+0x00, (uint32_t)&schedule_handler, 0, IntGate32, 0x08);
set_idt_desc(PROC_EXIT, (uint32_t)&exit_handler, 3, IntGate32, 0x08);
set_idt_desc(PROC_YIELD, (uint32_t)&yield_handler, 3, IntGate32, 0x08);
}
void print_mem_type(uint32_t val)
{
switch(val)
{
case 1: terminal_writestring("Usable "); break;
case 2: terminal_writestring("Reserved "); break;
case 3: terminal_writestring("ACPI Rec "); break;
case 4: terminal_writestring("ACPI NVS "); break;
case 5: terminal_writestring("Bad Mem "); break;
default: terminal_writestring(" "); break;
}
}
void kernel_main()
{
terminal_cls(COLOR_LIGHT_BLUE);
terminal_setcolor(make_color(COLOR_WHITE, COLOR_LIGHT_BLUE));
/* Since there is no support for newlines in terminal_putchar yet, \n will
produce some VGA specific character instead. This is normal. */
terminal_writestring("Hello, kernel World!\n");
terminal_printf("This is the base string terminal system !\n");
if(apros_setup_gdt() > 0)
terminal_printf("GDT correctly setted !\n");
if(apros_setup_idt())
terminal_printf("IDT correctly setted ! \n");
for(;;)
continue;
}
