redox/libstd_real/libc/src/start.rs
Jeremy Soller 149b0297a4 Smp (#23)
* Fire up multiple processors

* Use IPIs to wake up secondary processors

* Much better exception information

* Modifications to show more information on fault

* WIP: Use real libstd

* Add TLS (not complete)

* Add random function, export getpid, cleanup

* Do not spin APs until new context

* Update rust

* Update rust

* Use rd/wrfsbase

* Implement TLS

* Implement compiler builtins and update rust

* Update rust

* Back to Redox libstd

* Update rust
2016-10-31 10:49:00 -06:00

40 lines
791 B
Rust

use super::exit;
#[no_mangle]
#[naked]
#[cfg(target_arch = "x86")]
pub unsafe fn _start() {
asm!("push esp
call _start_stack
pop esp"
:
:
: "memory"
: "intel", "volatile");
let _ = exit(0);
}
#[no_mangle]
#[naked]
#[cfg(target_arch = "x86_64")]
pub unsafe fn _start() {
asm!("mov rdi, rsp
and rsp, 0xFFFFFFFFFFFFFFF0
call _start_stack"
:
:
: "memory"
: "intel", "volatile");
let _ = exit(0);
}
#[no_mangle]
pub unsafe extern "C" fn _start_stack(stack: *const usize){
extern "C" {
fn main(argc: usize, argv: *const *const u8) -> usize;
}
let argc = *stack as usize;
let argv = stack.offset(1) as *const *const u8;
let _ = exit(main(argc, argv));
}