144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
//
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// Created by rick on 8/18/19.
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//
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#include <stdio.h>
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#include <myke/cpu/isr.h>
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#include <myke/debug/debug.h>
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#include <myke/cpu/idt.h>
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#include <myke/cpu/pic.h>
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#include <myke/cpu/syscall_handler.h>
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#include <myke/libk/libk.h>
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#include <myke/tasks/task.h>
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isr_t interrupt_handlers[256];
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void isr_install() {
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set_idt_gate(0, (uint32_t) isr0);
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set_idt_gate(1, (uint32_t) isr1);
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set_idt_gate(2, (uint32_t) isr2);
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set_idt_gate(3, (uint32_t) isr3);
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set_idt_gate(4, (uint32_t) isr4);
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set_idt_gate(5, (uint32_t) isr5);
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set_idt_gate(6, (uint32_t) isr6);
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set_idt_gate(7, (uint32_t) isr7);
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set_idt_gate(8, (uint32_t) isr8);
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set_idt_gate(9, (uint32_t) isr9);
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set_idt_gate(10, (uint32_t) isr10);
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set_idt_gate(11, (uint32_t) isr11);
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set_idt_gate(12, (uint32_t) isr12);
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set_idt_gate(13, (uint32_t) isr13);
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set_idt_gate(14, (uint32_t) isr14);
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set_idt_gate(15, (uint32_t) isr15);
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set_idt_gate(16, (uint32_t) isr16);
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set_idt_gate(17, (uint32_t) isr17);
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set_idt_gate(18, (uint32_t) isr18);
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set_idt_gate(19, (uint32_t) isr19);
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set_idt_gate(20, (uint32_t) isr20);
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set_idt_gate(21, (uint32_t) isr21);
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set_idt_gate(22, (uint32_t) isr22);
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set_idt_gate(23, (uint32_t) isr23);
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set_idt_gate(24, (uint32_t) isr24);
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set_idt_gate(25, (uint32_t) isr25);
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set_idt_gate(26, (uint32_t) isr26);
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set_idt_gate(27, (uint32_t) isr27);
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set_idt_gate(28, (uint32_t) isr28);
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set_idt_gate(29, (uint32_t) isr29);
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set_idt_gate(30, (uint32_t) isr30);
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set_idt_gate(31, (uint32_t) isr31);
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// Remap the PIC
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pic_init(IRQ0);
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// Install the IRQs
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set_idt_gate(32, (uint32_t) irq0); // 0x20
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set_idt_gate(33, (uint32_t) irq1);
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set_idt_gate(34, (uint32_t) irq2);
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set_idt_gate(35, (uint32_t) irq3);
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set_idt_gate(36, (uint32_t) irq4);
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set_idt_gate(37, (uint32_t) irq5);
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set_idt_gate(38, (uint32_t) irq6);
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set_idt_gate(39, (uint32_t) irq7);
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set_idt_gate(40, (uint32_t) irq8); // 0x28
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set_idt_gate(41, (uint32_t) irq9);
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set_idt_gate(42, (uint32_t) irq10);
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set_idt_gate(43, (uint32_t) irq11);
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set_idt_gate(44, (uint32_t) irq12);
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set_idt_gate(45, (uint32_t) irq13);
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set_idt_gate(46, (uint32_t) irq14);
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set_idt_gate(47, (uint32_t) irq15);
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// 0x80 SYSCALL
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set_idt_gate(128, (uint32_t) isr128);
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set_idt(); // Load with ASM
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}
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char *exception_messages[] = {
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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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"Into 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 att_used isr_handler(isr_registers_t r) {
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char msg[256];
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if (r.int_no == 128) {
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syscall_handle(&r);
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return;
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}
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sprintf(msg, "Received interrupt: %d - %s\n", r.int_no, exception_messages[r.int_no]);
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debug_backtrace(true);
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k_panics(msg);
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}
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void register_interrupt_handler(uint8_t n, isr_t handler) {
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interrupt_handlers[n] = handler;
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}
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void att_used irq_handler(isr_registers_t r) {
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/* After every interrupt we need to send an EOI to the PICs
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* or they will not send another interrupt again */
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pic_eoi(r.int_no >= IRQ8);
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if (r.int_no >= IRQ0 && r.int_no < IRQ15) {
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task_notify_irq(r.int_no - IRQ0);
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}
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/* Handle the interrupt in a more modular way */
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if (interrupt_handlers[r.int_no] != NULL) {
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isr_t handler = interrupt_handlers[r.int_no];
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handler(&r);
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}
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} |