void isr_handler(pt_regs *regs)
{
if (interrupt_handlers[regs->int_no]) {
interrupt_handlers[regs->int_no](regs);
} else {
printk_color(rc_black, rc_blue, "Unhandled interrupt: %d\n", regs->int_no);
}
}
int kern_entry()
{
init_debug();
console_clear();
printk_color(rc_black, rc_green, "Hello, OS kernel!\n");
//panic("test");
printk("kernel in memory start: 0x%08X\n", kern_start);
printk("kernel in memory end: 0x%08X\n", kern_end);
printk("kernel in memory used: %d KB\n\n", (kern_end - kern_start) / 1024);
show_memory_map();
init_pmm();
printk_color(rc_black, rc_red, "\nThe Count of Physical Memory Page is: %u\n\n", phy_page_count);
uint32_t allc_addr = NULL;
printk_color(rc_black, rc_light_brown, "Test Physical Memory Alloc :\n");
allc_addr = pmm_alloc_page();
printk_color(rc_black, rc_light_brown, "Alloc Physical Addr: 0x%08X\n", allc_addr);
allc_addr = pmm_alloc_page();
printk_color(rc_black, rc_light_brown, "Alloc Physical Addr: 0x%08X\n", allc_addr);
allc_addr = pmm_alloc_page();
printk_color(rc_black, rc_light_brown, "Alloc Physical Addr: 0x%08X\n", allc_addr);
allc_addr = pmm_alloc_page();
printk_color(rc_black, rc_light_brown, "Alloc Physical Addr: 0x%08X\n", allc_addr);
return 0;
}
// 调用中断处理函数
void isr_handler(pt_regs_t *regs)
{
if (interrupt_handlers[regs->int_no]) {
interrupt_handlers[regs->int_no](regs);
} else {
printk_color(rc_black, rc_blue, "Unhandled interrupt: %d %s\n", regs->int_no, intrname(regs->int_no));
cpu_hlt();
}
}
// 调用中断处理函数
void idt_handler(registers_t *regs)
{
if (interrupt_handlers[regs->int_no]) {
interrupt_handlers[regs->int_no](regs);
} else {
printk_color(rc_black, rc_blue, "Unhandled interrupt: %d\n", regs->int_no);
}
#if CHAPTER >= 6
panic("Unhandled interrupt");
#endif
}
//调用中断处理函数
void idt_handler(registers_t *regs)
{
if (interrupt_handlers[regs->int_no])
{
interrupt_handlers[regs->int_no](regs);
}
else
{
printk_color(rc_black, rc_blue, "Unhandler interrupt: %d\n", regs->int_no);
}
}
int kern_entry()
{
init_debug();
console_clear();
printk_color(rc_black, rc_green, "Hello, OS kernel!\n");
panic("test");
return 0;
}
void int_handler(struct trap_frame *frame)
{
interrupt_handler_t handler = interrupt_handlers[frame->int_no];
if (frame->int_no >= 32) {
irq_eoi(frame->int_no);
}
if(handler){
handler(frame);
}else{
printk_color(COLOR_BLUE, COLOR_BLACK, "INT: %d NO HANDLER\n", frame->int_no);
}
}
int main(multiboot_t * mbp)
{
cpu_state_t *cpu;
// first is to save critical info from bootloader
// and get symbol tables so we can print back traces
mbootp = mbp;
init_debug(mbp);
// reset text-mode
c80_clear();
printk_color(rc_black, rc_red, "\t\t\t\tRed Magic\n");
// init processors
init_bootstrap_processor();
cpu = get_boot_processor();
ASSERT(cpu != NULL);
// initialize descriptors
init_global_descriptor_table(cpu);
init_interrupt_descriptor_table();
init_io_apic();
// interrupt on
local_irq_enable();
// memory management
show_kernel_pos();
show_ARDS_from_multiboot(mbp);
init_paging();
init_kheap();
// initialize devices and rootfs
init_dev();
//init_root_fs();
// start all APs
if (mpinfo.ismp)
start_smp();
// start system clock
if (!mpinfo.ismp)
init_pit_timer(CLOCK_INT_HZ);
else
init_apic_timer(CLOCK_INT_HZ);
// initialize kernel task and scheduling
setup_init_task();
init_sched();
// All our initialisation calls will go in here.
return 0xDEADBABA;
}
int kern_entry()
{
init_debug();
init_gdt();
init_idt();
console_clear();
printk_color(rc_black, rc_green, "Hello, OS kernel!\n");
init_timer(200);
// 开启中断
asm volatile ("sti");
return 0;
}
void test_heap()
{
printk_color(rc_black, rc_magenta, "Test kmalloc() && kfree() now ...\n\n");
void *addr1 = kmalloc(50);
printk("kmalloc 50 byte in 0x%X\n", addr1);
void *addr2 = kmalloc(500);
printk("kmalloc 500 byte in 0x%X\n", addr2);
void *addr3 = kmalloc(5000);
printk("kmalloc 5000 byte in 0x%X\n", addr3);
void *addr4 = kmalloc(50000);
printk("kmalloc 50000 byte in 0x%X\n\n", addr4);
printk("free mem in 0x%X\n", addr1);
kfree(addr1);
printk("free mem in 0x%X\n", addr2);
kfree(addr2);
printk("free mem in 0x%X\n", addr3);
kfree(addr3);
printk("free mem in 0x%X\n\n", addr4);
kfree(addr4);
}
void test_heap(){
printk_color(black, light_magenta, "Test kmalloc() && kfree()\n");
void *addr1 = kmalloc(100);
printk_color(black, light_cyan, "kmalloc 100 bytes in 0x%x\n", addr1);
void *addr2 = kmalloc(10);
printk_color(black, light_cyan, "kmalloc 10 bytes in 0x%x\n", addr2);
kfree(addr1);
printk_color(black, light_cyan, "kfree 100 bytes in 0x%x\n", addr1);
void *addr3 = kmalloc(30);
printk_color(black, light_cyan, "kmalloc 30 bytes in 0x%x\n", addr3);
printk("\n");
kfree(addr2);
printk_color(black, light_cyan, "kfree 10 bytes in 0x%x\n", addr2);
kfree(addr3);
printk_color(black, light_cyan, "kfree 30 bytes in 0x%x\n", addr3);
}
