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
|
/* Run-time support required by CIL binaries.
Copyright (C) 2006 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
Authors:
Andrea Bona
Andrea Ornstein
Erven Rohou
Roberto Costa
Contact information at STMicroelectronics:
Roberto Costa <roberto.costa@st.com> */
using System;
using System.Collections;
using System.Reflection;
using System.Runtime.InteropServices;
namespace gcc4net {
public unsafe sealed class StartupHelper {
public unsafe static IntPtr GetArgv(out int argc) {
String[] argv = Environment.GetCommandLineArgs();
argc = argv.Length;
int ptr_size = (int)(sizeof(void*));
int size = (argc + 1) * ptr_size;
IntPtr res = Marshal.AllocHGlobal(size);
for (int i=0; i < argc; ++i) {
Marshal.WriteIntPtr(res, ptr_size * i,
Marshal.StringToHGlobalAnsi(argv[i]));
}
Marshal.WriteIntPtr(res, ptr_size * argc, IntPtr.Zero);
return res;
}
public unsafe static IntPtr GetEnvVars() {
IDictionary env = Environment.GetEnvironmentVariables();
int num_elems = env.Keys.Count;
int ptr_size = (int)(sizeof(void*));
int size = (num_elems + 1) * ptr_size;
IntPtr res = Marshal.AllocHGlobal(size);
int i = 0;
foreach (DictionaryEntry de in env) {
String str = de.Key + "=" + de.Value;
Marshal.WriteIntPtr(res, ptr_size * i,
Marshal.StringToHGlobalAnsi(str));
++i;
}
Marshal.WriteIntPtr(res, ptr_size * num_elems, IntPtr.Zero);
return res;
}
public unsafe static void Startup() {
Assembly assembly;
MethodInfo initMethod = null;
// Find the module that contains the "main" function.
assembly = Assembly.GetEntryAssembly();
Type type = assembly.GetType("<Module>");
if (type != null)
initMethod = type.GetMethod(".init");
else {
Module module = assembly.GetModules()[0];
initMethod = module.GetMethod(".init");
}
// Invoke the application's ".init" function, if present.
if(initMethod != null)
initMethod.Invoke(null, null);
}
public unsafe static void Shutdown(int status) {
}
}
public sealed class Crt {
public static int __minsi3(int a, int b) { return (a<=b) ? a : b; }
public static long __minti3(long a, long b) { return (a<=b) ? a : b; }
public static uint __uminsi3(uint a, uint b) { return (a<=b) ? a : b; }
public static ulong __uminti3(ulong a, ulong b) { return (a<=b) ? a : b; }
public static float __minsf3(float a, float b) { return (a<=b) ? a : b; }
public static double __mindf3(double a, double b) { return (a<=b) ? a : b; }
public static int __maxsi3(int a, int b) { return (a>=b) ? a : b; }
public static long __maxti3(long a, long b) { return (a>=b) ? a : b; }
public static uint __umaxsi3(uint a, uint b) { return (a>=b) ? a : b; }
public static ulong __umaxti3(ulong a, ulong b) { return (a>=b) ? a : b; }
public static float __maxsf3(float a, float b) { return (a>=b) ? a : b; }
public static double __maxdf3(double a, double b) { return (a>=b) ? a : b; }
public static int __abssi2(int a) { return (a>=0) ? a : -a; }
public static long __absti2(long a) { return (a>=0) ? a : -a; }
public static float __abssf2(float a) { return (a>=0) ? a : -a; }
public static double __absdf2(double a) { return (a>=0) ? a : -a; }
public static unsafe bool __isLittleEndian() {
// big endian: 3f f0 00 00 00 00 00 00
// little endian: 00 00 00 00 00 00 f0 3f
double d = 1.0;
byte* b = (byte*)&d;
return b[0]==0;
}
}
namespace CQualifiers {
/* Optional modifier class used to mark "const" types */
public sealed class IsConst {
}
/* Optional modifier class used to mark "restrict" types */
public sealed class IsRestrict {
}
/* Optional modifier class used to mark "volatile" types */
public sealed class IsVolatile {
}
}
}
|
