mirror of
https://git.code.sf.net/p/quake/quake2forge
synced 2024-12-13 22:21:34 +00:00
368 lines
7 KiB
C
368 lines
7 KiB
C
/*
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Copyright (C) 1997-2001 Id Software, Inc.
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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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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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <unistd.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/wait.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <sys/file.h>
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#include <dlfcn.h>
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#include "../qcommon/qcommon.h"
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cvar_t *nostdout;
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unsigned sys_frame_time;
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qboolean stdin_active = true;
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// =======================================================================
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// General routines
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// =======================================================================
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void Sys_ConsoleOutput (char *string)
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{
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if (nostdout && nostdout->value)
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return;
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fputs(string, stdout);
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}
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void Sys_Printf (char *fmt, ...)
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{
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va_list argptr;
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char text[1024];
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unsigned char *p;
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va_start (argptr,fmt);
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vsprintf (text,fmt,argptr);
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va_end (argptr);
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if (strlen(text) > sizeof(text))
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Sys_Error("memory overwrite in Sys_Printf");
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if (nostdout && nostdout->value)
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return;
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for (p = (unsigned char *)text; *p; p++) {
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*p &= 0x7f;
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if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
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printf("[%02x]", *p);
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else
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putc(*p, stdout);
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}
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}
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void Sys_Quit (void)
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{
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CL_Shutdown ();
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Qcommon_Shutdown ();
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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_exit(0);
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}
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void Sys_Init(void)
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{
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#if id386
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// Sys_SetFPCW();
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#endif
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}
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void Sys_Error (char *error, ...)
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{
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va_list argptr;
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char string[1024];
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// change stdin to non blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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va_start (argptr,error);
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vsprintf (string,error,argptr);
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va_end (argptr);
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fprintf(stderr, "Error: %s\n", string);
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CL_Shutdown ();
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Qcommon_Shutdown ();
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_exit (1);
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}
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void Sys_Warn (char *warning, ...)
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{
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va_list argptr;
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char string[1024];
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va_start (argptr,warning);
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vsprintf (string,warning,argptr);
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va_end (argptr);
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fprintf(stderr, "Warning: %s", string);
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}
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/*
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============
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Sys_FileTime
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returns -1 if not present
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============
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*/
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int Sys_FileTime (char *path)
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{
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struct stat buf;
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if (stat (path,&buf) == -1)
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return -1;
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return buf.st_mtime;
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}
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void floating_point_exception_handler(int whatever)
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{
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// Sys_Warn("floating point exception\n");
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signal(SIGFPE, floating_point_exception_handler);
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}
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char *Sys_ConsoleInput(void)
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{
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static char text[256];
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int len;
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fd_set fdset;
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struct timeval timeout;
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if (!dedicated || !dedicated->value)
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return NULL;
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if (!stdin_active)
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return NULL;
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FD_ZERO(&fdset);
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FD_SET(0, &fdset); // stdin
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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if (select (1, &fdset, NULL, NULL, &timeout) == -1 || !FD_ISSET(0, &fdset))
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return NULL;
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len = read (0, text, sizeof(text));
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if (len == 0) { // eof!
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stdin_active = false;
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return NULL;
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}
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if (len < 1)
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return NULL;
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text[len-1] = 0; // rip off the /n and terminate
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return text;
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}
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/*****************************************************************************/
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static void *game_library;
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/*
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=================
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Sys_UnloadGame
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=================
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*/
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void Sys_UnloadGame (void)
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{
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if (game_library)
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dlclose (game_library);
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game_library = NULL;
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}
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/*
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=================
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Sys_GetGameAPI
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Loads the game dll
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=================
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*/
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void *Sys_GetGameAPI (void *parms)
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{
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void *(*GetGameAPI) (void *);
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char name[MAX_OSPATH];
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char curpath[MAX_OSPATH];
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char *path;
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char *str_p;
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#ifdef __i386__
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const char *gamename = "gamei386.so";
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#elif defined __sun__
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const char *gamename = "gamesparc.so";
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#else
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#error Unknown arch
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#endif
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if (game_library)
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Com_Error (ERR_FATAL, "Sys_GetGameAPI without Sys_UnloadingGame");
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getcwd(curpath, sizeof(curpath));
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Com_Printf("------- Loading %s -------", gamename);
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// now run through the search paths
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path = NULL;
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while (1)
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{
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path = FS_NextPath (path);
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if (!path)
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return NULL; // couldn't find one anywhere
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sprintf (name, "%s/%s/%s", curpath, path, gamename);
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game_library = dlopen (name, RTLD_NOW );
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if (game_library)
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{
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Com_MDPrintf ("LoadLibrary (%s)\n", name);
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break;
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} else {
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Com_MPrintf("error: %s\n", dlerror());
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str_p = strchr(dlerror(), ':'); // skip the path (already shown)
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if (str_p != NULL)
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{
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Com_MDPrintf (" **");
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while (*str_p)
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Com_MDPrintf ("%c", *(++str_p));
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Com_MDPrintf ("\n");
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}
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}
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}
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GetGameAPI = (void *)dlsym (game_library, "GetGameAPI");
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if (!GetGameAPI)
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{
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Sys_UnloadGame ();
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return NULL;
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}
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return GetGameAPI (parms);
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}
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/*****************************************************************************/
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void Sys_AppActivate (void)
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{
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}
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void Sys_SendKeyEvents (void)
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{
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// grab frame time
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sys_frame_time = Sys_Milliseconds();
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}
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/*****************************************************************************/
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char *Sys_GetClipboardData(void)
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{
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return NULL;
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}
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int main (int argc, char **argv)
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{
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int time, oldtime, newtime;
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#if 0
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int newargc;
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char **newargv;
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int i;
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// force dedicated
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newargc = argc;
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newargv = malloc((argc + 3) * sizeof(char *));
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newargv[0] = argv[0];
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newargv[1] = "+set";
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newargv[2] = "dedicated";
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newargv[3] = "1";
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for (i = 1; i < argc; i++)
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newargv[i + 3] = argv[i];
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newargc += 3;
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Qcommon_Init(newargc, newargv);
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#else
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Qcommon_Init(argc, argv);
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#endif
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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nostdout = Cvar_Get("nostdout", "0", 0);
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if (!nostdout->value) {
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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// printf ("Linux Quake -- Version %0.3f\n", LINUX_VERSION);
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}
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oldtime = Sys_Milliseconds ();
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while (1)
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{
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// find time spent rendering last frame
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do {
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newtime = Sys_Milliseconds ();
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time = newtime - oldtime;
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} while (time < 1);
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Qcommon_Frame (time);
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oldtime = newtime;
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}
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}
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void Sys_CopyProtect(void)
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{
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return;
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}
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#if 0
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/*
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================
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Sys_MakeCodeWriteable
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================
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*/
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void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
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{
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int r;
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unsigned long addr;
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int psize = getpagesize();
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addr = (startaddr & ~(psize-1)) - psize;
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// fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
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// addr, startaddr+length, length);
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r = mprotect((char*)addr, length + startaddr - addr + psize, 7);
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if (r < 0)
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Sys_Error("Protection change failed\n");
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}
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#endif
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