515 lines
8.6 KiB
C
515 lines
8.6 KiB
C
#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 <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <SDL.h>
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#ifndef __WIN32__
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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 <sys/wait.h>
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#include <sys/mman.h>
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#endif
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#include "quakedef.h"
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#define DISABLE_CDROM
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qboolean isDedicated;
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int noconinput = 0;
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char *basedir = ".";
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char *cachedir = "/tmp";
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int starttime;
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volatile int sys_checksum;
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qboolean isDedicated;
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static double lastcurtime = 0.0;
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static double curtime = 0.0;
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static qboolean sc_return_on_enter = false;
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static double pfreq;
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static int lowshift;
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//HANDLE hinput, houtput;
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//static char *tracking_tag = "Clams & Mooses";
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#define KEYBUF_SIZE 256
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static int keybuf[KEYBUF_SIZE];
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static int keybuf_head=0;
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static int keybuf_tail=0;
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void MaskExceptions (void);
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void Sys_InitFloatTime (void);
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void Sys_PushFPCW_SetHigh (void);
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void Sys_PopFPCW (void);
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cvar_t sys_linerefresh = {"sys_linerefresh","0"};// set for entity display
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cvar_t sys_nostdout = {"sys_nostdout","0"};
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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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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_Quit (void) {
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Host_Shutdown();
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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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#if id386
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Sys_SetFPCW();
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#endif
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}
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#if !id386
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/*
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================
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Sys_LowFPPrecision
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================
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*/
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void Sys_LowFPPrecision (void)
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{
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// causes weird problems on Nextstep
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}
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/*
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================
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Sys_HighFPPrecision
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================
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*/
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void Sys_HighFPPrecision (void)
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{
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// causes weird problems on Nextstep
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}
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#endif // !id386
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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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va_start (argptr,error);
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vsprintf (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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vsprintf (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_PageIn
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================
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*/
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void Sys_PageIn (void *ptr, int size)
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{
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byte *x;
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int /*j, */m, n;
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// touch all the memory to make sure it's there. The 16-page skip is to
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// keep Win 95 from thinking we're trying to page ourselves in (we are
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// doing that, of course, but there's no reason we shouldn't)
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x = (byte *)ptr;
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for (n=0 ; n<4 ; n++)
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{
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for (m=0 ; m<(size - 16 * 0x1000) ; m += 4)
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{
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sys_checksum += *(int *)&x[m];
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sys_checksum += *(int *)&x[m + 16 * 0x1000];
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}
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}
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}
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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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FILE *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])
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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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Qfilelength
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================
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*/
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static int Qfilelength (FILE *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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FILE *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] = f;
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*hndl = i;
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return Qfilelength(f);
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}
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int Sys_FileOpenWrite (char *path)
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{
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FILE *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] = f;
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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 ( handle >= 0 ) {
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fclose (sys_handles[handle]);
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sys_handles[handle] = NULL;
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}
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}
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void Sys_FileSeek (int handle, int position)
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{
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if ( handle >= 0 ) {
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fseek (sys_handles[handle], position, SEEK_SET);
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}
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}
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int Sys_FileRead (int handle, void *dst, int count)
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{
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char *data;
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int size, done;
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size = 0;
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if ( handle >= 0 ) {
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data = dst;
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while ( count > 0 ) {
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done = fread (data, 1, count, sys_handles[handle]);
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if ( done == 0 ) {
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break;
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}
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data += done;
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count -= done;
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size += done;
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}
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}
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return size;
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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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char *data;
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int size, done;
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size = 0;
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if ( handle >= 0 ) {
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data = src;
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while ( count > 0 ) {
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done = fread (data, 1, count, sys_handles[handle]);
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if ( done == 0 ) {
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break;
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}
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data += done;
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count -= done;
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size += done;
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}
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}
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return size;
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}
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int Sys_FileTime (char *path) {
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FILE *f;
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f = fopen(path, "rb");
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if (f) {
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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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#ifdef __WIN32__
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mkdir (path);
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#else
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mkdir (path, 0777);
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#endif
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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];
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FILE *fp;
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va_start(argptr, fmt);
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vsprintf(data, fmt, argptr);
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va_end(argptr);
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fp = fopen(file, "a");
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fwrite(data, strlen(data), 1, fp);
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fclose(fp);
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}
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double Sys_FloatTime (void) {
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#ifdef __WIN32__
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static int starttime = 0;
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if ( ! starttime )
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starttime = clock();
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return (clock()-starttime)*1.0/1024;
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#else
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struct timeval tp;
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static int secbase;
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gettimeofday(&tp, NULL);
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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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#endif
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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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byte *Sys_ZoneBase (int *size)
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{
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char *QUAKEOPT = getenv("QUAKEOPT");
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*size = 0xc00000;
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if (QUAKEOPT)
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{
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while (*QUAKEOPT)
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if (tolower(*QUAKEOPT++) == 'm')
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{
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*size = atof(QUAKEOPT) * 1024*1024;
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break;
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}
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}
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return malloc (*size);
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}
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void Sys_LineRefresh(void)
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{
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}
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/*
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================
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Sys_InitFloatTime
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================
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*/
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void Sys_InitFloatTime (void)
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{
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/* int j;
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Sys_FloatTime ();
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j = COM_CheckParm("-starttime");
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if (j)
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{
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curtime = (double) (Q_atof(com_argv[j+1]));
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}
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else
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{
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curtime = 0.0;
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}
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*/
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curtime = 0.0;
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lastcurtime = curtime;
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}
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void Sys_Sleep(void)
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{
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SDL_Delay(1);
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}
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void floating_point_exception_handler(int whatever) {
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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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void moncontrol(int x) {
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}
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int main (int c, char **v) {
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double time, oldtime, newtime;
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quakeparms_t parms;
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extern int vcrFile;
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extern int recording;
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static int frame;
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moncontrol(0);
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signal(SIGFPE, SIG_IGN);
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parms.memsize = 10*1024*1024;
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parms.membase = malloc (parms.memsize);
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parms.basedir = basedir;
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parms.cachedir = cachedir;
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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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Sys_Init();
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Host_Init(&parms);
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Cvar_RegisterVariable (&sys_nostdout);
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while (1) {
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oldtime = Sys_FloatTime () - 0.1;
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newtime = Sys_FloatTime ();
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time = newtime - oldtime;
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if (cls.state == ca_dedicated) {
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if (time < sys_ticrate.value && (vcrFile == -1 || recording) ) {
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SDL_Delay (1);
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continue;
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}
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time = sys_ticrate.value;
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}
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if (time > sys_ticrate.value*2)
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oldtime = newtime;
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else
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oldtime += time;
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if (++frame > 10)
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moncontrol(1);
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Host_Frame (time);
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moncontrol(0);
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if (sys_linerefresh.value)
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Sys_LineRefresh ();
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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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int r;
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unsigned long addr;
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int psize = getpagesize();
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fprintf(stderr, "writable code %lx-%lx\n", startaddr, startaddr+length);
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addr = startaddr & ~(psize-1);
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r = mprotect((char*)addr, length + startaddr - addr, 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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