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Add Invalid Opcode handler. Set rsp when going to user.

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This commit is contained in:
WangRunji 2018-05-13 01:36:16 +08:00
parent 40b02c33cb
commit 9723d7c1a3
3 changed files with 15 additions and 6 deletions
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1
src/arch/x86_64/idt/mod.rs
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@ -14,6 +14,7 @@ pub fn init() {
idt[T_BRKPT].set_handler_fn(breakpoint);
idt[T_PGFLT].set_handler_fn(page_fault);
idt[T_GPFLT].set_handler_fn(general_protection_fault);
idt[T_ILLOP].set_handler_fn(invalid_opcode);
idt[T_IRQ0 + IRQ_COM1].set_handler_fn(com1);
idt[T_IRQ0 + IRQ_COM2].set_handler_fn(com2);
idt[T_IRQ0 + IRQ_KBD].set_handler_fn(keyboard);

6
src/arch/x86_64/interrupt/handler.rs
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@ -28,6 +28,12 @@ interrupt_error_p!(general_protection_fault, stack, {
loop {}
});
interrupt_stack_p!(invalid_opcode, stack, {
println!("\nEXCEPTION: Invalid Opcode");
stack.dump();
loop {}
});
#[cfg(feature = "use_apic")]
use arch::driver::apic::ack;
#[cfg(not(feature = "use_apic"))]

14
src/arch/x86_64/interrupt/template.rs
View File

@ -336,16 +336,18 @@ macro_rules! interrupt_switch {
let mut rsp: usize;
asm!("" : "={rsp}"(rsp) : : : "intel", "volatile");
// Map kernel
// $crate::arch::x86_64::pti::map();
// Call inner rust function
inner(&mut rsp);
asm!("" : : "{rsp}"(rsp) : : "intel", "volatile");
// Set return rsp if to user
use arch::gdt;
use core::mem::size_of;
let tf = &mut *(rsp as *mut TrapFrame);
if tf.iret.cs == gdt::UCODE_SELECTOR.0 as usize {
gdt::set_ring0_rsp(rsp + size_of::<TrapFrame>());
}
// Unmap kernel
// $crate::arch::x86_64::pti::unmap();
asm!("" : : "{rsp}"(rsp) : : "intel", "volatile");
// Pop scratch registers and return
fs_pop!();