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- /*
- Copyright (C) 1996-1997 Id Software, Inc.
-
- This program 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
- of the License, or (at your option) any later version.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
- #include <unistd.h>
- #include <signal.h>
- #include <stdlib.h>
- #include <limits.h>
- #include <sys/time.h>
- #include <sys/types.h>
- #include <unistd.h>
- #include <fcntl.h>
- #include <stdarg.h>
- #include <stdio.h>
- #include <sys/ipc.h>
- #include <sys/shm.h>
- #include <sys/stat.h>
- #include <string.h>
- #include <ctype.h>
- #include <sys/wait.h>
- #include <sys/mman.h>
- #include <errno.h>
-
- #include "quakedef.h"
-
- int noconinput = 0;
- int nostdout = 0;
-
- char *basedir = ".";
- char *cachedir = "/tmp";
-
- cvar_t sys_linerefresh = {"sys_linerefresh","0"};// set for entity display
-
- // =======================================================================
- // General routines
- // =======================================================================
-
- void Sys_DebugNumber(int y, int val)
- {
- }
-
- /*
- void Sys_Printf (char *fmt, ...)
- {
- va_list argptr;
- char text[1024];
-
- va_start (argptr,fmt);
- vsprintf (text,fmt,argptr);
- va_end (argptr);
- fprintf(stderr, "%s", text);
-
- Con_Print (text);
- }
-
- void Sys_Printf (char *fmt, ...)
- {
-
- va_list argptr;
- char text[1024], *t_p;
- int l, r;
-
- if (nostdout)
- return;
-
- va_start (argptr,fmt);
- vsprintf (text,fmt,argptr);
- va_end (argptr);
-
- l = strlen(text);
- t_p = text;
-
- // make sure everything goes through, even though we are non-blocking
- while (l)
- {
- r = write (1, text, l);
- if (r != l)
- sleep (0);
- if (r > 0)
- {
- t_p += r;
- l -= r;
- }
- }
-
- }
- */
-
- void Sys_Printf (char *fmt, ...)
- {
- va_list argptr;
- char text[2048];
- unsigned char *p;
-
- va_start (argptr,fmt);
- vsprintf (text,fmt,argptr);
- va_end (argptr);
-
- if (strlen(text) > sizeof(text))
- Sys_Error("memory overwrite in Sys_Printf");
-
- if (nostdout)
- return;
-
- for (p = (unsigned char *)text; *p; p++)
- if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
- printf("[%02x]", *p);
- else
- putc(*p, stdout);
- }
-
- void Sys_Quit (void)
- {
- Host_Shutdown();
- fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
- exit(0);
- }
-
- void Sys_Init(void)
- {
- #if id386
- Sys_SetFPCW();
- #endif
- }
-
- void Sys_Error (char *error, ...)
- {
- va_list argptr;
- char string[1024];
-
- // change stdin to non blocking
- fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
-
- va_start (argptr,error);
- vsprintf (string,error,argptr);
- va_end (argptr);
- fprintf(stderr, "Error: %s\n", string);
-
- Host_Shutdown ();
- exit (1);
-
- }
-
- void Sys_Warn (char *warning, ...)
- {
- va_list argptr;
- char string[1024];
-
- va_start (argptr,warning);
- vsprintf (string,warning,argptr);
- va_end (argptr);
- fprintf(stderr, "Warning: %s", string);
- }
-
- /*
- ============
- Sys_FileTime
-
- returns -1 if not present
- ============
- */
- int Sys_FileTime (char *path)
- {
- struct stat buf;
-
- if (stat (path,&buf) == -1)
- return -1;
-
- return buf.st_mtime;
- }
-
-
- void Sys_mkdir (char *path)
- {
- mkdir (path, 0777);
- }
-
- int Sys_FileOpenRead (char *path, int *handle)
- {
- int h;
- struct stat fileinfo;
-
-
- h = open (path, O_RDONLY, 0666);
- *handle = h;
- if (h == -1)
- return -1;
-
- if (fstat (h,&fileinfo) == -1)
- Sys_Error ("Error fstating %s", path);
-
- return fileinfo.st_size;
- }
-
- int Sys_FileOpenWrite (char *path)
- {
- int handle;
-
- umask (0);
-
- handle = open(path,O_RDWR | O_CREAT | O_TRUNC
- , 0666);
-
- if (handle == -1)
- Sys_Error ("Error opening %s: %s", path,strerror(errno));
-
- return handle;
- }
-
- int Sys_FileWrite (int handle, void *src, int count)
- {
- return write (handle, src, count);
- }
-
- void Sys_FileClose (int handle)
- {
- close (handle);
- }
-
- void Sys_FileSeek (int handle, int position)
- {
- lseek (handle, position, SEEK_SET);
- }
-
- int Sys_FileRead (int handle, void *dest, int count)
- {
- return read (handle, dest, count);
- }
-
- void Sys_DebugLog(char *file, char *fmt, ...)
- {
- va_list argptr;
- static char data[1024];
- int fd;
-
- va_start(argptr, fmt);
- vsprintf(data, fmt, argptr);
- va_end(argptr);
- // fd = open(file, O_WRONLY | O_BINARY | O_CREAT | O_APPEND, 0666);
- fd = open(file, O_WRONLY | O_CREAT | O_APPEND, 0666);
- write(fd, data, strlen(data));
- close(fd);
- }
-
- void Sys_EditFile(char *filename)
- {
-
- char cmd[256];
- char *term;
- char *editor;
-
- term = getenv("TERM");
- if (term && !strcmp(term, "xterm"))
- {
- editor = getenv("VISUAL");
- if (!editor)
- editor = getenv("EDITOR");
- if (!editor)
- editor = getenv("EDIT");
- if (!editor)
- editor = "vi";
- sprintf(cmd, "xterm -e %s %s", editor, filename);
- system(cmd);
- }
-
- }
-
- double Sys_DoubleTime (void)
- {
- struct timeval tp;
- struct timezone tzp;
- static int secbase;
-
- gettimeofday(&tp, &tzp);
-
- if (!secbase)
- {
- secbase = tp.tv_sec;
- return tp.tv_usec/1000000.0;
- }
-
- return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
- }
-
- // =======================================================================
- // Sleeps for microseconds
- // =======================================================================
-
- static volatile int oktogo;
-
- void alarm_handler(int x)
- {
- oktogo=1;
- }
-
- void Sys_LineRefresh(void)
- {
- }
-
- void floating_point_exception_handler(int whatever)
- {
- // Sys_Warn("floating point exception\n");
- signal(SIGFPE, floating_point_exception_handler);
- }
-
- char *Sys_ConsoleInput(void)
- {
- #if 0
- static char text[256];
- int len;
-
- if (cls.state == ca_dedicated) {
- len = read (0, text, sizeof(text));
- if (len < 1)
- return NULL;
- text[len-1] = 0; // rip off the /n and terminate
-
- return text;
- }
- #endif
- return NULL;
- }
-
- #if !id386
- void Sys_HighFPPrecision (void)
- {
- }
-
- void Sys_LowFPPrecision (void)
- {
- }
- #endif
-
- int skipframes;
-
- int main (int c, char **v)
- {
-
- double time, oldtime, newtime;
- quakeparms_t parms;
- int j;
-
- // static char cwd[1024];
-
- // signal(SIGFPE, floating_point_exception_handler);
- signal(SIGFPE, SIG_IGN);
-
- memset(&parms, 0, sizeof(parms));
-
- COM_InitArgv(c, v);
- parms.argc = com_argc;
- parms.argv = com_argv;
-
- parms.memsize = 16*1024*1024;
-
- j = COM_CheckParm("-mem");
- if (j)
- parms.memsize = (int) (Q_atof(com_argv[j+1]) * 1024 * 1024);
- parms.membase = malloc (parms.memsize);
-
- parms.basedir = basedir;
- // caching is disabled by default, use -cachedir to enable
- // parms.cachedir = cachedir;
-
- noconinput = COM_CheckParm("-noconinput");
- if (!noconinput)
- fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
-
- if (COM_CheckParm("-nostdout"))
- nostdout = 1;
-
- Sys_Init();
-
- Host_Init(&parms);
-
- oldtime = Sys_DoubleTime ();
- while (1)
- {
- // find time spent rendering last frame
- newtime = Sys_DoubleTime ();
- time = newtime - oldtime;
-
- Host_Frame(time);
- oldtime = newtime;
- }
-
- }
-
-
- /*
- ================
- Sys_MakeCodeWriteable
- ================
- */
- void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
- {
-
- int r;
- unsigned long addr;
- int psize = getpagesize();
-
- addr = (startaddr & ~(psize-1)) - psize;
-
- // fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
- // addr, startaddr+length, length);
-
- r = mprotect((char*)addr, length + startaddr - addr + psize, 7);
-
- if (r < 0)
- Sys_Error("Protection change failed\n");
-
- }
-
-