diff options
Diffstat (limited to 'kernel/l0/idt.c')
| -rw-r--r-- | kernel/l0/idt.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/kernel/l0/idt.c b/kernel/l0/idt.c index a0e19dd..8a981af 100644 --- a/kernel/l0/idt.c +++ b/kernel/l0/idt.c @@ -62,19 +62,22 @@ static idt_entry_t idt_entries[256]; static idt_ptr_t idt_ptr; static isr_handler_t irq_handlers[16] = {0}; +static isr_handler_t ex_handlers[32] = {0}; -/* Called in idt_.asm when an exception fires (interrupt 0 to 31). - Tries to handle the exception, panics if fails. */ -void idt_isrHandler(registers_t *regs) { - dbg_printf("/ ISR %i\n", regs->int_no); +/* Called in interrupt.s when an exception fires (interrupt 0 to 31) */ +void idt_exHandler(registers_t *regs) { + dbg_printf("/ Exception %i\n", regs->int_no); dbg_printf("| EAX: 0x%p EBX: 0x%p ECX: 0x%p EDX: 0x%p\n", regs->eax, regs->ebx, regs->ecx, regs->edx); dbg_printf("| EDI: 0x%p ESI: 0x%p ESP: 0x%p EBP: 0x%p\n", regs->edi, regs->esi, regs->esp, regs->ebp); dbg_printf("| EIP: 0x%p CS : 0x%p DS : 0x%p SS : 0x%p\n", regs->eip, regs->cs, regs->ds, regs->ss); dbg_printf("\\ EFl: 0x%p I# : 0x%p Err: 0x%p\n", regs->eflags, regs->int_no, regs->err_code); + + if (ex_handlers[regs->int_no] != 0) { + ex_handlers[regs->int_no](regs); + } } -/* Called in interrupt.asm when an IRQ fires (interrupt 32 to 47) - Possibly wakes up a thread that was waiting, possibly calls a handler. */ +/* Called in interrupt.s when an IRQ fires (interrupt 32 to 47) */ void idt_irqHandler(registers_t *regs) { if (regs->err_code > 7) { outb(0xA0, 0x20); @@ -87,10 +90,10 @@ void idt_irqHandler(registers_t *regs) { } } -/* syscall handler */ +/* Caled in interrupt.s when a syscall is called */ void idt_syscallHandler(registers_t *regs) { dbg_printf("Syscall %i\n", regs->int_no); - // do nothing... + // do nothing, yet. } /* For internal use only. Sets up an entry of the IDT with given parameters. */ @@ -178,10 +181,17 @@ void idt_init() { } /* Sets up an IRQ handler for given IRQ. */ -void idt_handleIrq(int number, isr_handler_t func) { +void idt_set_irq_handler(int number, isr_handler_t func) { if (number < 16 && number >= 0) { irq_handlers[number] = func; } } +/* Sets up a handler for a processor exception */ +void idt_set_ex_handler(int number, isr_handler_t func) { + if (number >= 0 && number < 32) { + ex_handlers[number] = func; + } +} + /* vim: set ts=4 sw=4 tw=0 noet :*/ |