mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-25 13:32:01 +00:00
438 lines
7.8 KiB
C
438 lines
7.8 KiB
C
/*
|
|
sys_linux.c
|
|
|
|
(description)
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#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";
|
|
qboolean is_server = false;
|
|
|
|
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");
|
|
|
|
}
|
|
|