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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
use core::{mem, slice};
use core::arch::asm;
use core::ops::{Deref, DerefMut};
use super::error::{Error, Result};
macro_rules! syscall {
($($name:ident($a:ident, $($b:ident, $($c:ident, $($d:ident, $($e:ident, $($f:ident, )?)?)?)?)?);)+) => {
$(
pub unsafe fn $name(mut $a: usize, $($b: usize, $($c: usize, $($d: usize, $($e: usize, $($f: usize)?)?)?)?)?) -> Result<usize> {
asm!(
"syscall",
inout("rax") $a,
$(
in("rdi") $b,
$(
in("rsi") $c,
$(
in("rdx") $d,
$(
in("r10") $e,
$(
in("r8") $f,
)?
)?
)?
)?
)?
out("rcx") _,
out("r11") _,
options(nostack),
);
Error::demux($a)
}
)+
};
}
syscall! {
syscall0(a,);
syscall1(a, b,);
syscall2(a, b, c,);
syscall3(a, b, c, d,);
syscall4(a, b, c, d, e,);
syscall5(a, b, c, d, e, f,);
}
#[derive(Copy, Clone, Debug, Default)]
#[repr(C)]
pub struct IntRegisters {
// TODO: Some of these don't get set by Redox yet. Should they?
pub r15: usize,
pub r14: usize,
pub r13: usize,
pub r12: usize,
pub rbp: usize,
pub rbx: usize,
pub r11: usize,
pub r10: usize,
pub r9: usize,
pub r8: usize,
pub rax: usize,
pub rcx: usize,
pub rdx: usize,
pub rsi: usize,
pub rdi: usize,
// pub orig_rax: usize,
pub rip: usize,
pub cs: usize,
pub rflags: usize,
pub rsp: usize,
pub ss: usize,
// pub fs_base: usize,
// pub gs_base: usize,
// pub ds: usize,
// pub es: usize,
pub fs: usize,
// pub gs: usize
}
impl Deref for IntRegisters {
type Target = [u8];
fn deref(&self) -> &[u8] {
unsafe {
slice::from_raw_parts(self as *const IntRegisters as *const u8, mem::size_of::<IntRegisters>())
}
}
}
impl DerefMut for IntRegisters {
fn deref_mut(&mut self) -> &mut [u8] {
unsafe {
slice::from_raw_parts_mut(self as *mut IntRegisters as *mut u8, mem::size_of::<IntRegisters>())
}
}
}
#[derive(Clone, Copy, Debug, Default)]
#[repr(packed)]
pub struct FloatRegisters {
pub fcw: u16,
pub fsw: u16,
pub ftw: u8,
pub _reserved: u8,
pub fop: u16,
pub fip: u64,
pub fdp: u64,
pub mxcsr: u32,
pub mxcsr_mask: u32,
pub st_space: [u128; 8],
pub xmm_space: [u128; 16],
// TODO: YMM/ZMM
}
impl Deref for FloatRegisters {
type Target = [u8];
fn deref(&self) -> &[u8] {
unsafe {
slice::from_raw_parts(self as *const FloatRegisters as *const u8, mem::size_of::<FloatRegisters>())
}
}
}
impl DerefMut for FloatRegisters {
fn deref_mut(&mut self) -> &mut [u8] {
unsafe {
slice::from_raw_parts_mut(self as *mut FloatRegisters as *mut u8, mem::size_of::<FloatRegisters>())
}
}
}
#[derive(Clone, Copy, Debug, Default)]
#[repr(packed)]
pub struct EnvRegisters {
pub fsbase: u64,
pub gsbase: u64,
// TODO: PKRU?
}
impl Deref for EnvRegisters {
type Target = [u8];
fn deref(&self) -> &[u8] {
unsafe {
slice::from_raw_parts(self as *const EnvRegisters as *const u8, mem::size_of::<EnvRegisters>())
}
}
}
impl DerefMut for EnvRegisters {
fn deref_mut(&mut self) -> &mut [u8] {
unsafe {
slice::from_raw_parts_mut(self as *mut EnvRegisters as *mut u8, mem::size_of::<EnvRegisters>())
}
}
}
|
