2011-01-16 06:41:17 +03:00
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#include <system.h>
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/*
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* Exception Handlers
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*/
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extern void _isr0();
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extern void _isr1();
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extern void _isr2();
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extern void _isr3();
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extern void _isr4();
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extern void _isr5();
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extern void _isr6();
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extern void _isr7();
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extern void _isr8();
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extern void _isr9();
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extern void _isr10();
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extern void _isr11();
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extern void _isr12();
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extern void _isr13();
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extern void _isr14();
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extern void _isr15();
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extern void _isr16();
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extern void _isr17();
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extern void _isr18();
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extern void _isr19();
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extern void _isr20();
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extern void _isr21();
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extern void _isr22();
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extern void _isr23();
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extern void _isr24();
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extern void _isr25();
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extern void _isr26();
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extern void _isr27();
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extern void _isr28();
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extern void _isr29();
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extern void _isr30();
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extern void _isr31();
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2011-01-21 04:49:35 +03:00
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static irq_handler_t isrs_routines[32] = { NULL };
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void
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isrs_install_handler(
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int isrs,
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irq_handler_t handler
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) {
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isrs_routines[isrs] = handler;
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}
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void
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isrs_uninstall_handler(
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int isrs
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) {
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isrs_routines[isrs] = 0;
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}
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2011-01-16 06:41:17 +03:00
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void
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isrs_install() {
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/* Exception Handlers */
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idt_set_gate(0, (unsigned)_isr0, 0x08, 0x8E);
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idt_set_gate(1, (unsigned)_isr1, 0x08, 0x8E);
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idt_set_gate(2, (unsigned)_isr2, 0x08, 0x8E);
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idt_set_gate(3, (unsigned)_isr3, 0x08, 0x8E);
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idt_set_gate(4, (unsigned)_isr4, 0x08, 0x8E);
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idt_set_gate(5, (unsigned)_isr5, 0x08, 0x8E);
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idt_set_gate(6, (unsigned)_isr6, 0x08, 0x8E);
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idt_set_gate(7, (unsigned)_isr7, 0x08, 0x8E);
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idt_set_gate(8, (unsigned)_isr8, 0x08, 0x8E);
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idt_set_gate(9, (unsigned)_isr9, 0x08, 0x8E);
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idt_set_gate(10, (unsigned)_isr10, 0x08, 0x8E);
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idt_set_gate(11, (unsigned)_isr11, 0x08, 0x8E);
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idt_set_gate(12, (unsigned)_isr12, 0x08, 0x8E);
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idt_set_gate(13, (unsigned)_isr13, 0x08, 0x8E);
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idt_set_gate(14, (unsigned)_isr14, 0x08, 0x8E);
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idt_set_gate(15, (unsigned)_isr15, 0x08, 0x8E);
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idt_set_gate(16, (unsigned)_isr16, 0x08, 0x8E);
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idt_set_gate(17, (unsigned)_isr17, 0x08, 0x8E);
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idt_set_gate(18, (unsigned)_isr18, 0x08, 0x8E);
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idt_set_gate(19, (unsigned)_isr19, 0x08, 0x8E);
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idt_set_gate(20, (unsigned)_isr20, 0x08, 0x8E);
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idt_set_gate(21, (unsigned)_isr21, 0x08, 0x8E);
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idt_set_gate(22, (unsigned)_isr22, 0x08, 0x8E);
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idt_set_gate(23, (unsigned)_isr23, 0x08, 0x8E);
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idt_set_gate(24, (unsigned)_isr24, 0x08, 0x8E);
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idt_set_gate(25, (unsigned)_isr25, 0x08, 0x8E);
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idt_set_gate(26, (unsigned)_isr26, 0x08, 0x8E);
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idt_set_gate(27, (unsigned)_isr27, 0x08, 0x8E);
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idt_set_gate(28, (unsigned)_isr28, 0x08, 0x8E);
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idt_set_gate(29, (unsigned)_isr29, 0x08, 0x8E);
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idt_set_gate(30, (unsigned)_isr30, 0x08, 0x8E);
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idt_set_gate(31, (unsigned)_isr31, 0x08, 0x8E);
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}
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2011-01-16 19:56:44 +03:00
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char *exception_messages[] = {
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2011-01-16 06:41:17 +03:00
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"division by zero",
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"debug",
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"non-maskable interrupt",
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"breakpoint",
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"detected overflow",
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"out-of-bounds",
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"invalid opcode",
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"no coprocessor",
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"double fault",
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"coprocessor segment overrun",
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"bad TSS",
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"segment not present",
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"stack fault",
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"general protection fault",
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"page fault",
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"unknown interrupt",
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"coprocessor fault",
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"alignment check",
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"machine check",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved"
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};
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void fault_handler(struct regs *r) {
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if (r->int_no < 32) {
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2011-01-21 04:49:35 +03:00
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void (*handler)(struct regs *r);
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handler = isrs_routines[r->int_no];
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if (handler) {
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handler(r);
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} else {
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kprintf("%s exception encountered.\n", exception_messages[r->int_no]);
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puts(exception_messages[r->int_no]);
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HALT_AND_CATCH_FIRE("System halted.");
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}
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2011-01-16 06:41:17 +03:00
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}
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}
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