115 lines
3.3 KiB
Rust
115 lines
3.3 KiB
Rust
use crate::drivers::vga::{self, Color, ColorCode};
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use crate::hlt_loop;
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use crate::memory::gdt;
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use crate::println;
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use core::arch::asm;
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use lazy_static::lazy_static;
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use pic::{
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disk1_interrupt_handler, disk2_interrupt_handler, init_pic, keyboard_interrupt_handler,
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timer_interrupt_handler, InterruptIndex,
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};
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use x86_64::structures::idt::PageFaultErrorCode;
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use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
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pub mod pic;
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const SYSCALL_32_INTERRUPT_NUMBER: usize = 0x80;
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lazy_static! {
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static ref IDT: InterruptDescriptorTable = {
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let mut idt = InterruptDescriptorTable::new();
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idt.breakpoint.set_handler_fn(breakpoint_handler);
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idt.page_fault.set_handler_fn(page_fault_handler);
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unsafe {
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idt.double_fault
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.set_handler_fn(double_fault_handler)
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.set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX);
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}
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idt[InterruptIndex::Timer.as_usize()].set_handler_fn(timer_interrupt_handler);
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idt[InterruptIndex::Keyboard.as_usize()].set_handler_fn(keyboard_interrupt_handler);
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idt[InterruptIndex::HardDisk1.as_usize()].set_handler_fn(disk1_interrupt_handler);
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idt[InterruptIndex::HardDisk2.as_usize()].set_handler_fn(disk2_interrupt_handler);
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idt[SYSCALL_32_INTERRUPT_NUMBER].set_handler_fn(syscall_handler_32);
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idt
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};
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}
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pub fn init_idt() {
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println!("Loading IDT");
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IDT.load();
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init_pic();
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println!("Enabling interrupts");
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x86_64::instructions::interrupts::enable();
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}
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extern "x86-interrupt" fn breakpoint_handler(stack_frame: InterruptStackFrame) {
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let color: vga::ColorCode = vga::get_color();
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vga::change_color(ColorCode::new(Color::Pink, Color::Black));
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println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
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vga::change_color(color);
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}
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extern "x86-interrupt" fn syscall_handler_32(_stack_frame: InterruptStackFrame) {
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let rax: u64;
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let rbx: u64;
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let rcx: u64;
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let rdx: u64;
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let rsi: u64;
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let rdi: u64;
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let rbp: u64;
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unsafe {
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asm!(
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"push rax",
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"push rbx",
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"push rcx",
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"push rdx",
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"push rsi",
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"push rdi",
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"push rbp",
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"pop {rbp}",
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"pop {rdi}",
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"pop {rsi}",
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"pop {rdx}",
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"pop {rcx}",
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"pop {rbx}",
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"pop {rax}",
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rax = out(reg) rax,
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rbx = out(reg) rbx,
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rcx = out(reg) rcx,
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rdx = out(reg) rdx,
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rsi = out(reg) rsi,
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rdi = out(reg) rdi,
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rbp = out(reg) rbp,
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)
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}
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println!("Received syscall");
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crate::syscalls::syscall_routine(rax);
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}
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extern "x86-interrupt" fn page_fault_handler(
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stack_frame: InterruptStackFrame,
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error_code: PageFaultErrorCode,
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) {
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let color: vga::ColorCode = vga::get_color();
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vga::change_color(ColorCode::new(Color::LightRed, Color::Black));
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use x86_64::registers::control::Cr2;
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println!("EXCEPTION: PAGE FAULT");
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println!("Accessed Address: {:?}", Cr2::read());
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println!("Error Code: {:?}", error_code);
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println!("{:#?}", stack_frame);
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vga::change_color(color);
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hlt_loop();
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}
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extern "x86-interrupt" fn double_fault_handler(
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stack_frame: InterruptStackFrame,
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_error_code: u64,
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) -> ! {
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panic!("EXCEPTION: DOUBLE FAULT\n{:#?}", stack_frame);
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}
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