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/* 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.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 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;
}
}
}
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