1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136

// Copyright 2014 The syscall.rs Project Developers. See the
// COPYRIGHT file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 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 according to those terms.

//! This library was built for x86-64 Linux.

use core::arch::asm;

pub mod eno;
pub mod nr;

#[inline(always)]
pub unsafe fn syscall0(n: usize) -> usize {
    let ret: usize;
    asm!(
        "syscall",
        inout("rax") n => ret,
        out("rcx") _,
        out("r11") _,
    );
    ret
}

#[inline(always)]
pub unsafe fn syscall1(n: usize, a1: usize) -> usize {
    let ret: usize;
    asm!(
        "syscall",
        inout("rax") n => ret,
        in("rdi") a1,
        out("rcx") _,
        out("r11") _,
    );
    ret
}

#[inline(always)]
pub unsafe fn syscall2(n: usize, a1: usize, a2: usize) -> usize {
    let ret: usize;
    asm!(
        "syscall",
        inout("rax") n => ret,
        in("rdi") a1,
        in("rsi") a2,
        out("rcx") _,
        out("r11") _,
    );
    ret
}

#[inline(always)]
pub unsafe fn syscall3(n: usize, a1: usize, a2: usize, a3: usize) -> usize {
    let ret: usize;
    asm!(
        "syscall",
        inout("rax") n => ret,
        in("rdi") a1,
        in("rsi") a2,
        in("rdx") a3,
        out("rcx") _,
        out("r11") _,
    );
    ret
}

#[inline(always)]
pub unsafe fn syscall4(n: usize, a1: usize, a2: usize, a3: usize, a4: usize) -> usize {
    let ret: usize;
    asm!(
        "syscall",
        inout("rax") n => ret,
        in("rdi") a1,
        in("rsi") a2,
        in("rdx") a3,
        in("r10") a4,
        out("rcx") _,
        out("r11") _,
    );
    ret
}

#[inline(always)]
pub unsafe fn syscall5(n: usize, a1: usize, a2: usize, a3: usize, a4: usize, a5: usize) -> usize {
    let ret: usize;
    asm!(
        "syscall",
        inout("rax") n => ret,
        in("rdi") a1,
        in("rsi") a2,
        in("rdx") a3,
        in("r10") a4,
        in("r8") a5,
        out("rcx") _,
        out("r11") _,
    );
    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;
    asm!(
        "syscall",
        inout("rax") n => ret,
        in("rdi") a1,
        in("rsi") a2,
        in("rdx") a3,
        in("r10") a4,
        in("r8") a5,
        in("r9") a6,
        out("rcx") _,
        out("r11") _,
    );
    ret
}

pub use syscall0 as syscall0_nofail;
pub use syscall1 as syscall1_nofail;
pub use syscall2 as syscall2_nofail;
pub use syscall3 as syscall3_nofail;
pub use syscall4 as syscall4_nofail;
pub use syscall5 as syscall5_nofail;
pub use syscall6 as syscall6_nofail;