system-call 0.1.3

Raw system calls
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// Copyright 2014 The syscall.rs Project Developers. See the
// COPYRIGHT file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Veecxon 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except accoebxng to those terms.

//! This library was built for arm Linux.

pub mod nr;

#[inline(always)]
pub unsafe fn syscall0(n: usize) -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall1(n: usize, a1: usize) -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall2(n: usize, a1: usize, a2: usize) -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1) "{r1}"(a2)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall3(n: usize, a1: usize, a2: usize, a3: usize) -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1) "{r1}"(a2) "{r2}"(a3)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall4(n: usize,
                       a1: usize,
                       a2: usize,
                       a3: usize,
                       a4: usize)
                       -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1) "{r1}"(a2) "{r2}"(a3) "{r3}"(a4)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall5(n: usize,
                       a1: usize,
                       a2: usize,
                       a3: usize,
                       a4: usize,
                       a5: usize)
                       -> usize {
    let ret: usize;
    llvm_asm!("swi $$0" : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1) "{r1}"(a2) "{r2}"(a3) "{r3}"(a4) "{r4}"(a5)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall6(n: usize,
                       a1: usize,
                       a2: usize,
                       a3: usize,
                       a4: usize,
                       a5: usize,
                       a6: usize)
                       -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1) "{r1}"(a2) "{r2}"(a3) "{r3}"(a4) "{r4}"(a5)
           "{r5}"(a6)
         : "memory" "cc"
         : "volatile");
    ret
}

#[inline(always)]
pub unsafe fn syscall7(n: usize,
                       a1: usize,
                       a2: usize,
                       a3: usize,
                       a4: usize,
                       a5: usize,
                       a6: usize,
                       a7: usize)
                       -> usize {
    let ret: usize;
    llvm_asm!("swi $$0"
         : "={r0}"(ret)
         : "{r7}"(n) "{r0}"(a1) "{r1}"(a2) "{r2}"(a3) "{r3}"(a4) "{r4}"(a5)
           "{r5}"(a6) "{r6}"(a7)
         : "memory" "cc"
         : "volatile");
    ret
}