mirror of
https://git.code.sf.net/p/quake/nuq
synced 2024-11-22 20:21:41 +00:00
362 lines
6.8 KiB
C
362 lines
6.8 KiB
C
/*
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sys_sun.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 "errno.h"
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <sys/param.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <stdio.h>
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qboolean isDedicated;
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/*
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===============================================================================
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FILE IO
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===============================================================================
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*/
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#define MAX_HANDLES 10
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typedef struct
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{
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QFile *hFile;
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char *pMap;
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int nLen;
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int nPos;
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} MEMFILE;
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MEMFILE sys_handles[MAX_HANDLES];
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int findhandle (void)
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{
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int i;
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for (i=1 ; i<MAX_HANDLES ; i++)
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if (!sys_handles[i].hFile)
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return i;
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Sys_Error ("out of handles");
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return -1;
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}
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/*
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================
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filelength
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================
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*/
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int filelength (QFile *f)
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{
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int pos;
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int end;
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pos = ftell (f);
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fseek (f, 0, SEEK_END);
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end = ftell (f);
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fseek (f, pos, SEEK_SET);
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return end;
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}
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int Sys_FileOpenRead (char *path, int *hndl)
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{
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QFile *f;
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int i;
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i = findhandle ();
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f = fopen(path, "rb");
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if (!f)
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{
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*hndl = -1;
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return -1;
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}
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sys_handles[i].hFile = f;
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sys_handles[i].nLen = filelength(f);
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sys_handles[i].nPos = 0;
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sys_handles[i].pMap = mmap( 0, sys_handles[i].nLen, PROT_READ, MAP_SHARED, fileno( sys_handles[i].hFile ), 0 );
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if (!sys_handles[i].pMap || (sys_handles[i].pMap == (char *)-1))
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{
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printf( "mmap %s failed!", path );
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sys_handles[i].pMap = NULL;
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}
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*hndl = i;
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return( sys_handles[i].nLen );
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}
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int Sys_FileOpenWrite (char *path)
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{
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QFile *f;
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int i;
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i = findhandle ();
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f = fopen(path, "wb");
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if (!f)
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Sys_Error ("Error opening %s: %s", path,strerror(errno));
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sys_handles[i].hFile = f;
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sys_handles[i].nLen = 0;
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sys_handles[i].nPos = 0;
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sys_handles[i].pMap = NULL;
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return i;
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}
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void Sys_FileClose (int handle)
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{
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if (sys_handles[handle].pMap)
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if (munmap( sys_handles[handle].pMap, sys_handles[handle].nLen ) != 0)
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printf( "failed to unmap handle %d\n", handle );
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fclose (sys_handles[handle].hFile);
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sys_handles[handle].hFile = NULL;
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}
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void Sys_FileSeek (int handle, int position)
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{
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if (sys_handles[handle].pMap)
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{
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sys_handles[handle].nPos = position;
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}
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else fseek (sys_handles[handle].hFile, 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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if (sys_handles[handle].pMap)
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{
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int nPos = sys_handles[handle].nPos;
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if (count < 0) count = 0;
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if (nPos + count > sys_handles[handle].nLen)
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count = sys_handles[handle].nLen - nPos;
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memcpy( dest, &sys_handles[handle].pMap[nPos], count );
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sys_handles[handle].nPos = nPos + count;
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return( count );
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}
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else return fread (dest, 1, count, sys_handles[handle].hFile);
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}
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int Sys_FileWrite (int handle, void *data, int count)
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{
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if (sys_handles[handle].pMap)
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Sys_Error( "Attempted to write to read-only file %d!\n", handle );
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return fwrite (data, 1, count, sys_handles[handle].hFile);
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}
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int Sys_FileTime (char *path)
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{
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QFile *f;
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f = fopen(path, "rb");
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if (f)
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{
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fclose(f);
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return 1;
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}
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return -1;
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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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/*
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===============================================================================
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SYSTEM IO
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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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void Sys_Error (char *error, ...)
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{
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va_list argptr;
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printf ("Sys_Error: ");
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va_start (argptr,error);
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vprintf (error,argptr);
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va_end (argptr);
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printf ("\n");
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Host_Shutdown();
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exit (1);
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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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va_start (argptr,fmt);
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vprintf (fmt,argptr);
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va_end (argptr);
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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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exit (0);
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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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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 readfds;
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int ready;
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struct timeval timeout;
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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FD_ZERO(&readfds);
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FD_SET(0, &readfds);
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ready = select(1, &readfds, 0, 0, &timeout);
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if (ready>0)
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{
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len = read (0, text, sizeof(text));
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if (len >= 1)
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{
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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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return 0;
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}
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void Sys_Sleep (void)
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{
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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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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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//=============================================================================
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int main (int argc, char **argv)
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{
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static quakeparms_t parms;
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float time, oldtime, newtime;
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parms.memsize = 16*1024*1024;
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parms.membase = malloc (parms.memsize);
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parms.basedir = ".";
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parms.cachedir = NULL;
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COM_InitArgv (argc, argv);
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parms.argc = com_argc;
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parms.argv = com_argv;
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printf ("Host_Init\n");
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Host_Init (&parms);
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Sys_Init();
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// unroll the simulation loop to give the video side a chance to see _vid_default_mode
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Host_Frame( 0.1 );
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VID_SetDefaultMode();
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oldtime = Sys_DoubleTime();
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while (1)
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{
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newtime = Sys_DoubleTime();
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Host_Frame (newtime - oldtime);
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oldtime = newtime;
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}
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return 0;
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}
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