1 files changed, 428 insertions, 0 deletions
diff --git a/QW/client/sys_linux.c b/QW/client/sys_linux.c
new file mode 100644
index 0000000..e54b11c
--- /dev/null
+++ b/QW/client/sys_linux.c
@@ -0,0 +1,428 @@
+/*
+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");
+
+}
+