diff options
Diffstat (limited to 'src/stem/task/idt.c')
| -rw-r--r-- | src/stem/task/idt.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/src/stem/task/idt.c b/src/stem/task/idt.c deleted file mode 100644 index 360ac91..0000000 --- a/src/stem/task/idt.c +++ /dev/null @@ -1,191 +0,0 @@ -#include "idt.h" -#include <core/monitor.h> -#include <core/sys.h> -#include <mem/paging.h> -#include "task.h" -#include "syscall.h" - -#include <stdlib.h> - -extern void isr0(); -extern void isr1(); -extern void isr2(); -extern void isr3(); -extern void isr4(); -extern void isr5(); -extern void isr6(); -extern void isr7(); -extern void isr8(); -extern void isr9(); -extern void isr10(); -extern void isr11(); -extern void isr12(); -extern void isr13(); -extern void isr14(); -extern void isr15(); -extern void isr16(); -extern void isr17(); -extern void isr18(); -extern void isr19(); -extern void isr20(); -extern void isr21(); -extern void isr22(); -extern void isr23(); -extern void isr24(); -extern void isr25(); -extern void isr26(); -extern void isr27(); -extern void isr28(); -extern void isr29(); -extern void isr30(); -extern void isr31(); - -extern void irq0(); -extern void irq1(); -extern void irq2(); -extern void irq3(); -extern void irq4(); -extern void irq5(); -extern void irq6(); -extern void irq7(); -extern void irq8(); -extern void irq9(); -extern void irq10(); -extern void irq11(); -extern void irq12(); -extern void irq13(); -extern void irq14(); -extern void irq15(); - -extern void syscall64(); - -extern void idt_flush(int32_t ptr); - -struct idt_entry idt_entries[256]; -struct idt_ptr idt_ptr; - -static int_callback irq_handlers[16] = {0}; - -void idt_isrHandler(struct registers regs) { - if ((regs.int_no == 14 && paging_fault(®s) != 0) || regs.int_no != 14) { - if (tasking_handleException(®s) == 0) { - monitor_write(" >> >> SOMETHING BAD HAPPENNED << <<\n"); - monitor_write("Unhandled exception "); - monitor_writeHex(regs.int_no); - monitor_write(" @"); monitor_writeHex(regs.eip); - monitor_put('\n'); - PANIC("unhandled exception"); - } - } -} - -void idt_irqHandler(struct registers regs) { - uint32_t doSwitch = 0; - doSwitch |= (regs.int_no == 32); //IRQ0 = timer - if (regs.err_code > 7) { - outb(0xA0, 0x20); - } - outb(0x20, 0x20); - if (irq_handlers[regs.err_code] != 0) { - irq_handlers[regs.err_code](®s); - } else { - monitor_write("Unhandled IRQ "); monitor_writeHex(regs.int_no - 32); monitor_write("\n"); - } - if (doSwitch) tasking_switch(); -} - -void idt_syscallHandler(struct registers regs) { - if (syscalls[regs.eax] != 0) { - syscalls[regs.eax](®s); - } else { - PANIC("unhandled syscall"); - } -} - -static void idt_setGate(uint8_t num, uint32_t base, uint16_t sel, uint8_t flags) { - idt_entries[num].base_lo = base & 0xFFFF; - idt_entries[num].base_hi = (base >> 16) & 0xFFFF; - - idt_entries[num].sel = sel; - idt_entries[num].always0 = 0; - idt_entries[num].flags = flags; -} - -void idt_init() { - idt_ptr.limit = (sizeof(struct idt_entry) * 256) - 1; - idt_ptr.base = (uint32_t)&idt_entries; - - memset((uint8_t*)&idt_entries, 0, sizeof(struct idt_entry) * 256); - - //Remap the IRQ table - outb(0x20, 0x11); - outb(0xA0, 0x11); - outb(0x21, 0x20); - outb(0xA1, 0x28); - outb(0x21, 0x04); - outb(0xA1, 0x02); - outb(0x21, 0x01); - outb(0xA1, 0x01); - outb(0x21, 0x0); - outb(0xA1, 0x0); - - idt_setGate(0, (int32_t)isr0, 0x08, 0x8E); - idt_setGate(1, (int32_t)isr1, 0x08, 0x8E); - idt_setGate(2, (int32_t)isr2, 0x08, 0x8E); - idt_setGate(3, (int32_t)isr3, 0x08, 0x8E); - idt_setGate(4, (int32_t)isr4, 0x08, 0x8E); - idt_setGate(5, (int32_t)isr5, 0x08, 0x8E); - idt_setGate(6, (int32_t)isr6, 0x08, 0x8E); - idt_setGate(7, (int32_t)isr7, 0x08, 0x8E); - idt_setGate(8, (int32_t)isr8, 0x08, 0x8E); - idt_setGate(9, (int32_t)isr9, 0x08, 0x8E); - idt_setGate(10, (int32_t)isr10, 0x08, 0x8E); - idt_setGate(11, (int32_t)isr11, 0x08, 0x8E); - idt_setGate(12, (int32_t)isr12, 0x08, 0x8E); - idt_setGate(13, (int32_t)isr13, 0x08, 0x8E); - idt_setGate(14, (int32_t)isr14, 0x08, 0x8E); - idt_setGate(15, (int32_t)isr15, 0x08, 0x8E); - idt_setGate(16, (int32_t)isr16, 0x08, 0x8E); - idt_setGate(17, (int32_t)isr17, 0x08, 0x8E); - idt_setGate(18, (int32_t)isr18, 0x08, 0x8E); - idt_setGate(19, (int32_t)isr19, 0x08, 0x8E); - idt_setGate(20, (int32_t)isr20, 0x08, 0x8E); - idt_setGate(21, (int32_t)isr21, 0x08, 0x8E); - idt_setGate(22, (int32_t)isr22, 0x08, 0x8E); - idt_setGate(23, (int32_t)isr23, 0x08, 0x8E); - idt_setGate(24, (int32_t)isr24, 0x08, 0x8E); - idt_setGate(25, (int32_t)isr25, 0x08, 0x8E); - idt_setGate(26, (int32_t)isr26, 0x08, 0x8E); - idt_setGate(27, (int32_t)isr27, 0x08, 0x8E); - idt_setGate(28, (int32_t)isr28, 0x08, 0x8E); - idt_setGate(29, (int32_t)isr29, 0x08, 0x8E); - idt_setGate(30, (int32_t)isr30, 0x08, 0x8E); - idt_setGate(31, (int32_t)isr31, 0x08, 0x8E); - - idt_setGate(32, (int32_t)irq0, 0x08, 0x8E); - idt_setGate(33, (int32_t)irq1, 0x08, 0x8E); - idt_setGate(34, (int32_t)irq2, 0x08, 0x8E); - idt_setGate(35, (int32_t)irq3, 0x08, 0x8E); - idt_setGate(36, (int32_t)irq4, 0x08, 0x8E); - idt_setGate(37, (int32_t)irq5, 0x08, 0x8E); - idt_setGate(38, (int32_t)irq6, 0x08, 0x8E); - idt_setGate(39, (int32_t)irq7, 0x08, 0x8E); - idt_setGate(40, (int32_t)irq8, 0x08, 0x8E); - idt_setGate(41, (int32_t)irq9, 0x08, 0x8E); - idt_setGate(42, (int32_t)irq10, 0x08, 0x8E); - idt_setGate(43, (int32_t)irq11, 0x08, 0x8E); - idt_setGate(44, (int32_t)irq12, 0x08, 0x8E); - idt_setGate(45, (int32_t)irq13, 0x08, 0x8E); - idt_setGate(46, (int32_t)irq14, 0x08, 0x8E); - idt_setGate(47, (int32_t)irq15, 0x08, 0x8E); - - idt_setGate(64, (int32_t)syscall64, 0x08, 0x8E); - - idt_flush((int32_t)&idt_ptr); - - monitor_write("IDT ok\n"); -} - -void idt_handleIrq(int number, int_callback func) { - irq_handlers[number] = func; -} |