ref: af7c9e9e4c647a9b155842cb98f25d0facd2bc95
dir: /u/sys_sun.c/
/*
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.
*/
// sys_sun.h -- Sun system driver
#include "quakedef.h"
#include "errno.h"
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/param.h>
#include <fcntl.h>
#include <stddef.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <stdio.h>
qboolean isDedicated;
/*
===============================================================================
FILE IO
===============================================================================
*/
#define MAX_HANDLES 10
typedef struct
{
FILE *hFile;
char *pMap;
int nLen;
int nPos;
} MEMFILE;
MEMFILE sys_handles[MAX_HANDLES];
int findhandle (void)
{
int i;
for (i=1 ; i<MAX_HANDLES ; i++)
if (!sys_handles[i].hFile)
return i;
Sys_Error ("out of handles");
return -1;
}
/*
================
filelength
================
*/
int filelength (FILE *f)
{
int pos;
int end;
pos = ftell (f);
fseek (f, 0, SEEK_END);
end = ftell (f);
fseek (f, pos, SEEK_SET);
return end;
}
int Sys_FileOpenRead (char *path, int *hndl)
{
FILE *f;
int i;
i = findhandle ();
f = fopen(path, "rb");
if (!f)
{
*hndl = -1;
return -1;
}
sys_handles[i].hFile = f;
sys_handles[i].nLen = filelength(f);
sys_handles[i].nPos = 0;
sys_handles[i].pMap = mmap( 0, sys_handles[i].nLen, PROT_READ, MAP_SHARED, fileno( sys_handles[i].hFile ), 0 );
if (!sys_handles[i].pMap || (sys_handles[i].pMap == (char *)-1))
{
printf( "mmap %s failed!", path );
sys_handles[i].pMap = NULL;
}
*hndl = i;
return( sys_handles[i].nLen );
}
int Sys_FileOpenWrite (char *path)
{
FILE *f;
int i;
i = findhandle ();
f = fopen(path, "wb");
if (!f)
Sys_Error ("Error opening %s: %s", path,strerror(errno));
sys_handles[i].hFile = f;
sys_handles[i].nLen = 0;
sys_handles[i].nPos = 0;
sys_handles[i].pMap = NULL;
return i;
}
void Sys_FileClose (int handle)
{
if (sys_handles[handle].pMap)
if (munmap( sys_handles[handle].pMap, sys_handles[handle].nLen ) != 0)
printf( "failed to unmap handle %d\n", handle );
fclose (sys_handles[handle].hFile);
sys_handles[handle].hFile = NULL;
}
void Sys_FileSeek (int handle, int position)
{
if (sys_handles[handle].pMap)
{
sys_handles[handle].nPos = position;
}
else fseek (sys_handles[handle].hFile, position, SEEK_SET);
}
int Sys_FileRead (int handle, void *dest, int count)
{
if (sys_handles[handle].pMap)
{
int nPos = sys_handles[handle].nPos;
if (count < 0) count = 0;
if (nPos + count > sys_handles[handle].nLen)
count = sys_handles[handle].nLen - nPos;
memcpy( dest, &sys_handles[handle].pMap[nPos], count );
sys_handles[handle].nPos = nPos + count;
return( count );
}
else return fread (dest, 1, count, sys_handles[handle].hFile);
}
int Sys_FileWrite (int handle, void *data, int count)
{
if (sys_handles[handle].pMap)
Sys_Error( "Attempted to write to read-only file %d!\n", handle );
return fwrite (data, 1, count, sys_handles[handle].hFile);
}
int Sys_FileTime (char *path)
{
FILE *f;
f = fopen(path, "rb");
if (f)
{
fclose(f);
return 1;
}
return -1;
}
void Sys_mkdir (char *path)
{
mkdir( path, 0777 );
}
/*
===============================================================================
SYSTEM IO
===============================================================================
*/
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");
}
void Sys_Error (char *error, ...)
{
va_list argptr;
printf ("Sys_Error: ");
va_start (argptr,error);
vprintf (error,argptr);
va_end (argptr);
printf ("\n");
Host_Shutdown();
exit (1);
}
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
va_start (argptr,fmt);
vprintf (fmt,argptr);
va_end (argptr);
}
void Sys_Quit (void)
{
Host_Shutdown();
exit (0);
}
double Sys_FloatTime (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;
}
char *Sys_ConsoleInput (void)
{
static char text[256];
int len;
fd_set readfds;
int ready;
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 0;
FD_ZERO(&readfds);
FD_SET(0, &readfds);
ready = select(1, &readfds, 0, 0, &timeout);
if (ready>0)
{
len = read (0, text, sizeof(text));
if (len >= 1)
{
text[len-1] = 0; // rip off the /n and terminate
return text;
}
}
return 0;
}
void Sys_Sleep (void)
{
}
#if !id386
void Sys_HighFPPrecision (void)
{
}
void Sys_LowFPPrecision (void)
{
}
#endif
void Sys_Init(void)
{
#if id386
Sys_SetFPCW();
#endif
}
//=============================================================================
int main (int argc, char **argv)
{
static quakeparms_t parms;
float time, oldtime, newtime;
parms.memsize = 16*1024*1024;
parms.membase = malloc (parms.memsize);
parms.basedir = ".";
parms.cachedir = NULL;
COM_InitArgv (argc, argv);
parms.argc = com_argc;
parms.argv = com_argv;
printf ("Host_Init\n");
Host_Init (&parms);
Sys_Init();
// unroll the simulation loop to give the video side a chance to see _vid_default_mode
Host_Frame( 0.1 );
VID_SetDefaultMode();
oldtime = Sys_FloatTime();
while (1)
{
newtime = Sys_FloatTime();
Host_Frame (newtime - oldtime);
oldtime = newtime;
}
return 0;
}