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Add a handler macro that creates wrapper functions

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This commit is contained in:
Philipp Oppermann
2016-08-03 16:24:43 +02:00
parent e7ee1faaba
commit 71ebb23ec3
1 changed files with 19 additions and 13 deletions
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32
src/interrupts/mod.rs
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@@ -1,10 +1,28 @@
mod idt;
macro_rules! handler {
($name: ident) => {{
#[naked]
extern "C" fn wrapper() -> ! {
unsafe {
asm!("mov rdi, rsp
sub rsp, 8 // align the stack pointer
call $0"
:: "i"($name as extern "C" fn(
*const ExceptionStackFrame) -> !)
: "rdi" : "intel");
::core::intrinsics::unreachable();
}
}
wrapper
}}
}
lazy_static! {
static ref IDT: idt::Idt = {
let mut idt = idt::Idt::new();
idt.set_handler(0, divide_by_zero_wrapper);
idt.set_handler(0, handler!(divide_by_zero_handler));
idt
};
@@ -26,18 +44,6 @@ struct ExceptionStackFrame {
use vga_buffer::print_error;
#[naked]
extern "C" fn divide_by_zero_wrapper() -> ! {
unsafe {
asm!("mov rdi, rsp
sub rsp, 8 // align the stack pointer
call $0"
:: "i"(divide_by_zero_handler as extern "C" fn(_) -> !)
: "rdi" : "intel");
::core::intrinsics::unreachable();
}
}
extern "C" fn divide_by_zero_handler(stack_frame: *const ExceptionStackFrame)
-> !
{