176 lines
4.1 KiB
C
176 lines
4.1 KiB
C
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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// Copyright (C) 1998-2000 by DooM Legacy Team.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//-----------------------------------------------------------------------------
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/// \file
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/// \brief Main program, simply calls D_SRB2Main and D_SRB2Loop, the high level loop.
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#include "../doomdef.h"
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#include "../m_argv.h"
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#include "../d_main.h"
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#include "../i_system.h"
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#ifdef __GNUC__
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#include <unistd.h>
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#endif
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#ifdef HAVE_SDL
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#ifdef HAVE_TTF
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#include "SDL.h"
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#include "i_ttf.h"
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#endif
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#if defined (_WIN32) && !defined (main)
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//#define SDLMAIN
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#endif
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#ifdef SDLMAIN
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#include "SDL_main.h"
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#elif defined(FORCESDLMAIN)
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extern int SDL_main(int argc, char *argv[]);
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#endif
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#ifdef LOGMESSAGES
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FILE *logstream = NULL;
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#endif
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#ifndef DOXYGEN
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#ifndef O_TEXT
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#define O_TEXT 0
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#endif
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#ifndef O_SEQUENTIAL
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#define O_SEQUENTIAL 0
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#endif
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#endif
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#if defined (_WIN32)
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#include "../win32/win_dbg.h"
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typedef BOOL (WINAPI *p_IsDebuggerPresent)(VOID);
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#endif
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#if defined (_WIN32)
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static inline VOID MakeCodeWritable(VOID)
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{
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#ifdef USEASM // Disable write-protection of code segment
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DWORD OldRights;
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const DWORD NewRights = PAGE_EXECUTE_READWRITE;
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PBYTE pBaseOfImage = (PBYTE)GetModuleHandle(NULL);
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PIMAGE_DOS_HEADER dosH =(PIMAGE_DOS_HEADER)pBaseOfImage;
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PIMAGE_NT_HEADERS ntH = (PIMAGE_NT_HEADERS)(pBaseOfImage + dosH->e_lfanew);
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PIMAGE_OPTIONAL_HEADER oH = (PIMAGE_OPTIONAL_HEADER)
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((PBYTE)ntH + sizeof (IMAGE_NT_SIGNATURE) + sizeof (IMAGE_FILE_HEADER));
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LPVOID pA = pBaseOfImage+oH->BaseOfCode;
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SIZE_T pS = oH->SizeOfCode;
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#if 1 // try to find the text section
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PIMAGE_SECTION_HEADER ntS = IMAGE_FIRST_SECTION (ntH);
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WORD s;
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for (s = 0; s < ntH->FileHeader.NumberOfSections; s++)
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{
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if (memcmp (ntS[s].Name, ".text\0\0", 8) == 0)
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{
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pA = pBaseOfImage+ntS[s].VirtualAddress;
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pS = ntS[s].Misc.VirtualSize;
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break;
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}
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}
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#endif
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if (!VirtualProtect(pA,pS,NewRights,&OldRights))
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I_Error("Could not make code writable\n");
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#endif
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}
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#endif
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/** \brief The main function
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\param argc number of arg
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\param *argv string table
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\return int
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*/
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#if defined (__GNUC__) && (__GNUC__ >= 4)
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#pragma GCC diagnostic ignored "-Wmissing-noreturn"
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#endif
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#ifdef FORCESDLMAIN
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int SDL_main(int argc, char **argv)
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#else
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int main(int argc, char **argv)
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#endif
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{
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const char *logdir = NULL;
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myargc = argc;
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myargv = argv; /// \todo pull out path to exe from this string
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#ifdef HAVE_TTF
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#ifdef _WIN32
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I_StartupTTF(FONTPOINTSIZE, SDL_INIT_VIDEO|SDL_INIT_AUDIO, SDL_SWSURFACE);
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#else
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I_StartupTTF(FONTPOINTSIZE, SDL_INIT_VIDEO, SDL_SWSURFACE);
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#endif
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#endif
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logdir = D_Home();
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#ifdef LOGMESSAGES
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#ifdef DEFAULTDIR
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if (logdir)
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logstream = fopen(va("%s/"DEFAULTDIR"/log.txt",logdir), "wt");
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else
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#endif
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logstream = fopen("./log.txt", "wt");
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#endif
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//I_OutputMsg("I_StartupSystem() ...\n");
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I_StartupSystem();
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#if defined (_WIN32)
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{
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#if 0 // just load the DLL
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p_IsDebuggerPresent pfnIsDebuggerPresent = (p_IsDebuggerPresent)GetProcAddress(GetModuleHandleA("kernel32.dll"), "IsDebuggerPresent");
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if ((!pfnIsDebuggerPresent || !pfnIsDebuggerPresent())
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#ifdef BUGTRAP
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&& !InitBugTrap()
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#endif
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)
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#endif
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{
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LoadLibraryA("exchndl.dll");
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}
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}
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#ifndef __MINGW32__
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prevExceptionFilter = SetUnhandledExceptionFilter(RecordExceptionInfo);
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#endif
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MakeCodeWritable();
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#endif
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// startup SRB2
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CONS_Printf("Setting up SRB2Kart...\n");
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D_SRB2Main();
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CONS_Printf("Entering main game loop...\n");
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// never return
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D_SRB2Loop();
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#ifdef BUGTRAP
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// This is safe even if BT didn't start.
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ShutdownBugTrap();
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#endif
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// return to OS
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return 0;
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}
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#endif
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