995268b04e
Added new build.zig Interrupts no work :( Added isr Interrupts work Added spurious irq Code review comments New name Refactor Build asm
131 lines
No EOL
3.6 KiB
Zig
131 lines
No EOL
3.6 KiB
Zig
// Zig version: 0.4.0
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const panic = @import("../../panic.zig");
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const tty = @import("../../tty.zig");
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const idt = @import("idt.zig");
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const arch = @import("arch.zig");
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const NUMBER_OF_ENTRIES: u16 = 32;
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extern fn isr0() void;
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extern fn isr1() void;
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extern fn isr2() void;
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extern fn isr3() void;
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extern fn isr4() void;
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extern fn isr5() void;
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extern fn isr6() void;
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extern fn isr7() void;
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extern fn isr8() void;
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extern fn isr9() void;
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extern fn isr10() void;
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extern fn isr11() void;
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extern fn isr12() void;
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extern fn isr13() void;
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extern fn isr14() void;
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extern fn isr15() void;
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extern fn isr16() void;
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extern fn isr17() void;
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extern fn isr18() void;
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extern fn isr19() void;
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extern fn isr20() void;
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extern fn isr21() void;
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extern fn isr22() void;
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extern fn isr23() void;
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extern fn isr24() void;
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extern fn isr25() void;
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extern fn isr26() void;
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extern fn isr27() void;
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extern fn isr28() void;
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extern fn isr29() void;
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extern fn isr30() void;
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extern fn isr31() void;
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const exception_msg: [NUMBER_OF_ENTRIES][]const u8 = [NUMBER_OF_ENTRIES][]const u8 {
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"Divide By Zero",
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"Single Step (Debugger)",
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"Non Maskable Interrupt",
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"Breakpoint (Debugger)",
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"Overflow",
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"Bound Range Exceeded",
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"Invalid Opcode",
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"No Coprocessor, Device Not Available",
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"Double Fault",
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"Coprocessor Segment Overrun",
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"Invalid Task State Segment (TSS)",
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"Segment Not Present",
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"Stack Segment Overrun",
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"General Protection Fault",
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"Page Fault",
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"Unknown Interrupt",
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"x87 FPU Floating Point Error",
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"Alignment Check",
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"Machine Check",
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"SIMD Floating Point",
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"Virtualization",
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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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"Security",
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"Reserved"
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};
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var isr_handlers: [NUMBER_OF_ENTRIES]fn(*arch.InterruptContext)void = []fn(*arch.InterruptContext)void{unhandled} ** NUMBER_OF_ENTRIES;
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fn unhandled(context: *arch.InterruptContext) void {
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const interrupt_num = context.int_num;
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panic.panicFmt(null, "Unhandled exception: {}, number {}", exception_msg[interrupt_num], interrupt_num);
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}
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export fn isrHandler(context: *arch.InterruptContext) void {
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const isr_num = context.int_num;
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isr_handlers[isr_num](context);
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}
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pub fn registerIsr(isr_num: u16, handler: fn(*arch.InterruptContext)void) void {
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isr_handlers[isr_num] = handler;
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}
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pub fn unregisterIsr(isr_num: u16) void {
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isr_handlers[isr_num] = unhandled;
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}
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pub fn init() void {
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idt.openInterruptGate(0, isr0);
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idt.openInterruptGate(1, isr1);
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idt.openInterruptGate(2, isr2);
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idt.openInterruptGate(3, isr3);
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idt.openInterruptGate(4, isr4);
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idt.openInterruptGate(5, isr5);
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idt.openInterruptGate(6, isr6);
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idt.openInterruptGate(7, isr7);
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idt.openInterruptGate(8, isr8);
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idt.openInterruptGate(9, isr9);
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idt.openInterruptGate(10, isr10);
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idt.openInterruptGate(11, isr11);
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idt.openInterruptGate(12, isr12);
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idt.openInterruptGate(13, isr13);
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idt.openInterruptGate(14, isr14);
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idt.openInterruptGate(15, isr15);
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idt.openInterruptGate(16, isr16);
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idt.openInterruptGate(17, isr17);
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idt.openInterruptGate(18, isr18);
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idt.openInterruptGate(19, isr19);
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idt.openInterruptGate(20, isr20);
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idt.openInterruptGate(21, isr21);
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idt.openInterruptGate(22, isr22);
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idt.openInterruptGate(23, isr23);
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idt.openInterruptGate(24, isr24);
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idt.openInterruptGate(25, isr25);
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idt.openInterruptGate(26, isr26);
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idt.openInterruptGate(27, isr27);
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idt.openInterruptGate(28, isr28);
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idt.openInterruptGate(29, isr29);
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idt.openInterruptGate(30, isr30);
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idt.openInterruptGate(31, isr31);
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} |