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#![no_std]
#![feature(linkage)]
use core::arch::global_asm;
#[cfg(target_arch = "aarch64")]
global_asm!(
"
.globl _start
_start:
mov x0, sp
and sp, x0, #0xfffffffffffffff0 //align sp
bl relibc_ld_so_start
# TODO: aarch64
udf #0
"
);
#[cfg(target_arch = "x86")]
global_asm!(
"
.globl _start
_start:
push esp
call relibc_ld_so_start
pop esp
# TODO: x86
ud2
"
);
#[cfg(target_arch = "x86_64")]
global_asm!(
"
.globl _start
_start:
# rsi = _start + 5
call 2f
2: pop rsi
# Save original stack and align stack to 16 bytes
mov rbp, rsp
and rsp, 0xFFFFFFFFFFFFFFF0
# Call ld_so_start(stack, entry)
mov rdi, rbp
sub rsi, 5
call relibc_ld_so_start
# Restore original stack, clear registers, and jump to new start function
mov rsp, rbp
xor rcx, rcx
xor rdx, rdx
xor rdi, rdi
xor rsi, rsi
xor r8, r8
xor r9, r9
xor r10, r10
xor r11, r11
fninit
jmp rax
"
);
#[cfg(target_arch = "riscv64")]
global_asm!(
"
.globl _start
_start:
mv a0, sp
jal relibc_ld_so_start
unimp
"
);
#[no_mangle]
pub unsafe extern "C" fn main(_argc: isize, _argv: *const *const i8) -> usize {
// LD
0x1D
}
#[linkage = "weak"]
#[no_mangle]
extern "C" fn relibc_panic(_pi: &::core::panic::PanicInfo) -> ! {
loop {}
}
#[panic_handler]
#[linkage = "weak"]
#[no_mangle]
pub unsafe fn rust_begin_unwind(pi: &::core::panic::PanicInfo) -> ! {
relibc_panic(pi)
}
Subproject commit b7b3b4bc31aa4ae42b2562e6adb151e92aa3a82a
Subproject commit 3cfad148058a1dda6346821c9ca6b4c10d726543
//! fcntl implementation for Redox, following http://pubs.opengroup.org/onlinepubs/7908799/xsh/fcntl.h.html
#![no_std]
#![allow(non_camel_case_types)]
#[macro_use]
extern crate syscall;
pub use sys::*;
#[cfg(all(not(feature="no_std"), target_os = "linux"))]
#[path="linux/mod.rs"]
mod sys;
#[cfg(all(not(feature="no_std"), target_os = "redox"))]
#[path="redox/mod.rs"]
mod sys;
pub mod types;
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pub fn exit(status: c_int) -> ! {
syscall::exit(status);
}
pub fn write(fd: c_int, buf: &[u8]) -> ssize_t {
syscall::write(fd, buf);
buf.len() as ssize_t
}
Subproject commit f42f21519dc900a19318ea499354d09e0491540f
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