mecca.platform.os.linux.ucontext source code

1 module mecca.platform.os.linux.ucontext;
2 
3 version (linux):
4 version (X86_64)
5 package(mecca):
6 
7 import core.sys.posix.ucontext;
8 
9 private alias gregset_t = typeof(ucontext_t.uc_mcontext.gregs);
10 
11 // Implements a platform agnostic interface to `ucontext_t`.
12 struct Ucontext
13 {
14     private ucontext_t context;
15 
16 nothrow:
17 @nogc:
18 
19     Mcontext uc_mcontext() return
20     {
21         return Mcontext(&context.uc_mcontext);
22     }
23 }
24 
25 struct Mcontext
26 {
27     private mcontext_t* context;
28 
29 nothrow:
30 @nogc:
31 
32     RegisterSet registers()
33     {
34         return RegisterSet(&context.gregs);
35     }
36 }
37 
38 struct RegisterSet
39 {
40     private gregset_t* gregs;
41 
42 nothrow:
43 @nogc:
44 
45     auto rax()
46     {
47         return (*gregs)[REG_RAX];
48     }
49 
50     auto rbx()
51     {
52         return (*gregs)[REG_RBX];
53     }
54 
55     auto rcx()
56     {
57         return (*gregs)[REG_RCX];
58     }
59 
60     auto rdx()
61     {
62         return (*gregs)[REG_RDX];
63     }
64 
65     auto rdi()
66     {
67         return (*gregs)[REG_RDI];
68     }
69 
70     auto rsi()
71     {
72         return (*gregs)[REG_RSI];
73     }
74 
75     auto rbp()
76     {
77         return (*gregs)[REG_RBP];
78     }
79 
80     auto rsp()
81     {
82         return (*gregs)[REG_RSP];
83     }
84 
85     auto r8()
86     {
87         return (*gregs)[REG_R8];
88     }
89 
90     auto r9()
91     {
92         return (*gregs)[REG_R9];
93     }
94 
95     auto r10()
96     {
97         return (*gregs)[REG_R10];
98     }
99 
100     auto r11()
101     {
102         return (*gregs)[REG_R11];
103     }
104 
105     auto r12()
106     {
107         return (*gregs)[REG_R12];
108     }
109 
110     auto r13()
111     {
112         return (*gregs)[REG_R13];
113     }
114 
115     auto r14()
116     {
117         return (*gregs)[REG_R14];
118     }
119 
120     auto r15()
121     {
122         return (*gregs)[REG_R15];
123     }
124 
125     auto rip()
126     {
127         return (*gregs)[REG_RIP];
128     }
129 }