mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-10 14:52:08 +00:00
482 lines
9.6 KiB
C
482 lines
9.6 KiB
C
/*
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sys_linux.c
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(description)
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Copyright (C) 1996-1997 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:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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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.h"
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#include "quakedef.h"
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int noconinput = 0;
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int nostdout = 0;
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char *basedir = ".";
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char *cachedir = "/tmp";
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qboolean is_server = false;
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/* cvar_t sys_linerefresh = {"sys_linerefresh","0"};// set for entity display
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CVAR_FIXME */
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cvar_t *sys_linerefresh;// set for entity display
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// The translation table between the graphical font and plain ASCII --KB
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char qfont_table[256] =
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{
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'\0', '#', '#', '#', '#', '.', '#', '#',
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'#', 9, 10, '#', ' ', 13, '.', '.',
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'[', ']', '0', '1', '2', '3', '4', '5',
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'6', '7', '8', '9', '.', '<', '=', '>',
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' ', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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'x', 'y', 'z', '{', '|', '}', '~', '<',
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'<', '=', '>', '#', '#', '.', '#', '#',
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'#', '#', ' ', '#', ' ', '>', '.', '.',
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'[', ']', '0', '1', '2', '3', '4', '5',
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'6', '7', '8', '9', '.', '<', '=', '>',
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' ', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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'x', 'y', 'z', '{', '|', '}', '~', '<'
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};
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// =======================================================================
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// General routines
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// =======================================================================
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void Sys_DebugNumber(int y, int val)
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{
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}
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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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va_start (argptr,fmt);
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vsprintf (text,fmt,argptr);
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va_end (argptr);
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fprintf(stderr, "%s", text);
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Con_Print (text);
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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], *t_p;
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int l, r;
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if (nostdout)
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return;
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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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l = strlen(text);
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t_p = text;
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// make sure everything goes through, even though we are non-blocking
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while (l)
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{
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r = write (1, text, l);
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if (r != l)
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sleep (0);
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if (r > 0)
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{
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t_p += r;
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l -= r;
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}
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}
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}
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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[2048];
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unsigned char *p;
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va_start (argptr,fmt);
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vsnprintf (text, sizeof(text), fmt, argptr);
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va_end (argptr);
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if (nostdout)
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return;
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// translate to ASCII instead of printing [xx] --KB
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for (p = (unsigned char *)text; *p; p++)
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putc(qfont_table[*p], stdout);
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}
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void Sys_Quit (void)
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{
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Host_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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#ifdef USE_INTEL_ASM
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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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vsnprintf (string, sizeof(string), error, argptr);
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va_end (argptr);
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fprintf(stderr, "Error: %s\n", string);
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Host_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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vsnprintf (string, sizeof(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 Sys_mkdir (char *path)
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{
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mkdir (path, 0777);
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}
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int Sys_FileOpenRead (char *path, int *handle)
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{
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int h;
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struct stat fileinfo;
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h = open (path, O_RDONLY, 0666);
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*handle = h;
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if (h == -1)
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return -1;
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if (fstat (h,&fileinfo) == -1)
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Sys_Error ("Error fstating %s", path);
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return fileinfo.st_size;
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}
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int Sys_FileOpenWrite (char *path)
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{
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int handle;
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umask (0);
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handle = open(path,O_RDWR | O_CREAT | O_TRUNC
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, 0666);
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if (handle == -1)
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Sys_Error ("Error opening %s: %s", path,strerror(errno));
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return handle;
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}
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int Sys_FileWrite (int handle, void *src, int count)
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{
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return write (handle, src, count);
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}
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void Sys_FileClose (int handle)
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{
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close (handle);
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}
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void Sys_FileSeek (int handle, int position)
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{
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lseek (handle, position, SEEK_SET);
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}
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int Sys_FileRead (int handle, void *dest, int count)
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{
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return read (handle, dest, count);
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}
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void Sys_DebugLog(char *file, char *fmt, ...)
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{
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va_list argptr;
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static char data[1024]; // why static ?
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int fd;
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va_start (argptr, fmt);
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vsnprintf (data, sizeof(data), fmt, argptr);
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va_end(argptr);
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// fd = open(file, O_WRONLY | O_BINARY | O_CREAT | O_APPEND, 0666);
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fd = open(file, O_WRONLY | O_CREAT | O_APPEND, 0666);
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write(fd, data, strlen(data));
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close(fd);
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}
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void Sys_EditFile(char *filename)
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{
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char cmd[256];
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char *term;
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char *editor;
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term = getenv("TERM");
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if (term && !strcmp(term, "xterm"))
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{
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editor = getenv("VISUAL");
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if (!editor)
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editor = getenv("EDITOR");
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if (!editor)
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editor = getenv("EDIT");
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if (!editor)
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editor = "vi";
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snprintf (cmd, sizeof(cmd), "xterm -e %s %s", editor, filename);
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system(cmd);
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}
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}
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double Sys_DoubleTime (void)
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{
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struct timeval tp;
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struct timezone tzp;
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static int secbase;
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gettimeofday(&tp, &tzp);
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if (!secbase)
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{
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secbase = tp.tv_sec;
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return tp.tv_usec/1000000.0;
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}
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return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
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}
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// =======================================================================
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// Sleeps for microseconds
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// =======================================================================
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static volatile int oktogo;
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void alarm_handler(int x)
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{
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oktogo=1;
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}
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void Sys_LineRefresh(void)
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{
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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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#if 0
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static char text[256];
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int len;
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if (cls.state == ca_dedicated) {
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len = read (0, text, sizeof(text));
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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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#endif
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return NULL;
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}
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#ifndef USE_INTEL_ASM
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void Sys_HighFPPrecision (void)
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{
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}
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void Sys_LowFPPrecision (void)
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{
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}
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#endif
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int skipframes;
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int main (int c, char **v)
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{
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double time, oldtime, newtime;
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quakeparms_t parms;
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int j;
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// static char cwd[1024];
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// signal(SIGFPE, floating_point_exception_handler);
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signal(SIGFPE, SIG_IGN);
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memset(&parms, 0, sizeof(parms));
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COM_InitArgv(c, v);
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parms.argc = com_argc;
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parms.argv = com_argv;
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parms.memsize = 16*1024*1024;
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j = COM_CheckParm("-mem");
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if (j)
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parms.memsize = (int) (Q_atof(com_argv[j+1]) * 1024 * 1024);
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parms.membase = malloc (parms.memsize);
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if (!parms.membase) {
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printf("Can't allocate memroy for zone.\n");
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return 1;
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}
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parms.basedir = basedir;
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// caching is disabled by default, use -cachedir to enable
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// parms.cachedir = cachedir;
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noconinput = COM_CheckParm("-noconinput");
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if (!noconinput)
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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if (COM_CheckParm("-nostdout"))
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nostdout = 1;
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Sys_Init();
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Host_Init(&parms);
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oldtime = Sys_DoubleTime ();
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while (1)
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{
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// find time spent rendering last frame
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newtime = Sys_DoubleTime ();
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time = newtime - oldtime;
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Host_Frame(time);
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oldtime = newtime;
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}
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}
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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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