Initial commit.
This commit is contained in:
Jim Gray
809
code/unix/unix_main.c
Normal file
809
code/unix/unix_main.c
Normal file
@@ -0,0 +1,809 @@
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#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 <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/wait.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <mntent.h>
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#include <dlfcn.h>
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#include "../game/q_shared.h"
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#include "../qcommon/qcommon.h"
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#include "../renderer/tr_public.h"
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cvar_t *nostdout;
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// Structure containing functions exported from refresh DLL
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refexport_t re;
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unsigned sys_frame_time;
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uid_t saved_euid;
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qboolean stdin_active = qtrue;
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// =======================================================================
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// General routines
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// =======================================================================
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void Sys_BeginProfiling( void ) {
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}
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/*
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=================
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Sys_In_Restart_f
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Restart the input subsystem
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=================
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*/
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void Sys_In_Restart_f( void )
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{
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IN_Shutdown();
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IN_Init();
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}
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void Sys_ConsoleOutput (char *string)
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{
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if (nostdout && nostdout->value)
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return;
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fputs(string, stdout);
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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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unsigned char *p;
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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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if (strlen(text) > sizeof(text))
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Sys_Error("memory overwrite in Sys_Printf");
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if (nostdout && nostdout->value)
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return;
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for (p = (unsigned char *)text; *p; p++) {
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*p &= 0x7f;
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if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
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printf("[%02x]", *p);
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else
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putc(*p, stdout);
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}
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}
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void Sys_Quit (void)
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{
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CL_Shutdown ();
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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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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Cmd_AddCommand ("in_restart", Sys_In_Restart_f);
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#if id386
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Sys_SetFPCW();
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#endif
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#if defined __linux__
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#if defined __i386__
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Cvar_Set( "arch", "linux i386" );
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#elif defined __alpha__
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Cvar_Set( "arch", "linux alpha" );
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#elif defined __sparc__
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Cvar_Set( "arch", "linux sparc" );
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#else
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Cvar_Set( "arch", "linux unknown" );
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#endif
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#elif defined __sun__
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#if defined __i386__
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Cvar_Set( "arch", "solaris x86" );
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#elif defined __sparc__
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Cvar_Set( "arch", "solaris sparc" );
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#else
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Cvar_Set( "arch", "solaris unknown" );
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#endif
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#elif defined __sgi__
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#if defined __mips__
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Cvar_Set( "arch", "sgi mips" );
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#else
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Cvar_Set( "arch", "sgi unknown" );
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#endif
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#else
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Cvar_Set( "arch", "unknown" );
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#endif
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IN_Init();
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}
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void Sys_Error( const char *error, ...)
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{
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va_list argptr;
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char string[1024];
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// change stdin to non blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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CL_Shutdown ();
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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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_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_FileTime
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returns -1 if not present
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============
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*/
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int Sys_FileTime (char *path)
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{
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struct stat buf;
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if (stat (path,&buf) == -1)
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return -1;
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return buf.st_mtime;
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}
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void floating_point_exception_handler(int whatever)
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{
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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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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 fdset;
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struct timeval timeout;
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if (!com_dedicated || !com_dedicated->value)
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return NULL;
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if (!stdin_active)
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return NULL;
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FD_ZERO(&fdset);
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FD_SET(0, &fdset); // stdin
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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if (select (1, &fdset, NULL, NULL, &timeout) == -1 || !FD_ISSET(0, &fdset))
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return NULL;
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len = read (0, text, sizeof(text));
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if (len == 0) { // eof!
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stdin_active = qfalse;
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return NULL;
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}
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if (len < 1)
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return NULL;
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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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static void *game_library;
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#ifdef __i386__
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const char *gamename = "qagamei386.so";
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#elif defined __alpha__
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const char *gamename = "qagameaxp.so";
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#elif defined __mips__
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const char *gamename = "qagamemips.so";
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#else
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#error Unknown arch
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#endif
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/*
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=================
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Sys_UnloadGame
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=================
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*/
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void Sys_UnloadGame (void)
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{
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Com_Printf("------ Unloading %s ------\n", gamename);
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if (game_library)
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dlclose (game_library);
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game_library = NULL;
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}
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/*
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=================
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Sys_GetGameAPI
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Loads the game dll
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=================
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*/
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void *Sys_GetGameAPI (void *parms)
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{
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void *(*GetGameAPI) (void *);
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char name[MAX_OSPATH];
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char curpath[MAX_OSPATH];
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char *path;
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if (game_library)
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Com_Error (ERR_FATAL, "Sys_GetGameAPI without Sys_UnloadingGame");
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// check the current debug directory first for development purposes
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getcwd(curpath, sizeof(curpath));
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Com_Printf("------- Loading %s -------\n", gamename);
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Com_sprintf (name, sizeof(name), "%s/%s", curpath, gamename);
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game_library = dlopen (name, RTLD_LAZY );
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if (game_library)
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Com_DPrintf ("LoadLibrary (%s)\n",name);
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else {
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Com_Printf( "LoadLibrary(\"%s\") failed\n", name);
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Com_Printf( "...reason: '%s'\n", dlerror() );
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Com_Error( ERR_FATAL, "Couldn't load game" );
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}
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GetGameAPI = (void *)dlsym (game_library, "GetGameAPI");
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if (!GetGameAPI)
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{
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Sys_UnloadGame ();
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return NULL;
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}
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return GetGameAPI (parms);
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}
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/*****************************************************************************/
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static void *cgame_library;
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/*
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=================
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Sys_UnloadGame
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=================
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*/
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void Sys_UnloadCGame (void)
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{
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if (cgame_library)
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dlclose (cgame_library);
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cgame_library = NULL;
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}
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/*
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=================
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Sys_GetGameAPI
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Loads the game dll
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=================
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*/
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void *Sys_GetCGameAPI (void)
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{
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void *(*api) (void);
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char name[MAX_OSPATH];
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char curpath[MAX_OSPATH];
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#ifdef __i386__
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const char *cgamename = "cgamei386.so";
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#elif defined __alpha__
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const char *cgamename = "cgameaxp.so";
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#elif defined __mips__
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const char *cgamename = "cgamemips.so";
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#else
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#error Unknown arch
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#endif
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Sys_UnloadCGame();
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getcwd(curpath, sizeof(curpath));
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Com_Printf("------- Loading %s -------\n", cgamename);
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sprintf (name, "%s/%s", curpath, cgamename);
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cgame_library = dlopen (name, RTLD_LAZY );
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if (!cgame_library)
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{
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Com_Printf ("LoadLibrary (%s)\n",name);
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Com_Error( ERR_FATAL, "Couldn't load cgame: %s", dlerror() );
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}
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api = (void *)dlsym (cgame_library, "GetCGameAPI");
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if (!api)
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{
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Com_Error( ERR_FATAL, "dlsym() failed on GetCGameAPI" );
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}
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return api();
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}
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/*****************************************************************************/
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static void *ui_library;
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/*
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=================
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Sys_UnloadUI
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=================
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*/
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void Sys_UnloadUI(void)
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{
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if (ui_library)
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dlclose (ui_library);
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ui_library = NULL;
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}
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/*
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=================
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Sys_GetUIAPI
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Loads the ui dll
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=================
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*/
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void *Sys_GetUIAPI (void)
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{
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void *api;
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char name[MAX_OSPATH];
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char curpath[MAX_OSPATH];
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#ifdef __i386__
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const char *uiname = "uii386.so";
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#elif defined __alpha__
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const char *uiname = "uiaxp.so";
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#elif defined __mips__
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const char *uiname = "uimips.so";
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#else
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#error Unknown arch
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#endif
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Sys_UnloadUI();
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getcwd(curpath, sizeof(curpath));
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Com_Printf("------- Loading %s -------\n", uiname);
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sprintf (name, "%s/%s", curpath, uiname);
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ui_library = dlopen (name, RTLD_LAZY );
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if (!ui_library)
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{
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Com_Printf ("LoadLibrary (%s)\n",name);
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Com_Error( ERR_FATAL, "Couldn't load ui: %s", dlerror() );
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}
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api = (void *)dlsym (ui_library, "GetUIAPI");
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if (!api)
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{
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Com_Error( ERR_FATAL, "dlsym() failed on GetUIAPI" );
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}
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return api;
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}
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/*****************************************************************************/
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void *Sys_GetRefAPI (void *parms)
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{
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return (void *)GetRefAPI(REF_API_VERSION, parms);
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}
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/*
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========================================================================
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BACKGROUND FILE STREAMING
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========================================================================
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*/
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typedef struct {
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#if 0
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HANDLE threadHandle;
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int threadId;
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CRITICAL_SECTION crit;
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#endif
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FILE *file;
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byte *buffer;
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qboolean eof;
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int bufferSize;
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int streamPosition; // next byte to be returned by Sys_StreamRead
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int threadPosition; // next byte to be read from file
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} streamState_t;
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streamState_t stream;
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/*
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||||
===============
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Sys_StreamThread
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A thread will be sitting in this loop forever
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================
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||||
*/
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void Sys_StreamThread( void )
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{
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int buffer;
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int count;
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int readCount;
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int bufferPoint;
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int r;
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//Loop here
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// EnterCriticalSection (&stream.crit);
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// if there is any space left in the buffer, fill it up
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if ( !stream.eof ) {
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count = stream.bufferSize - (stream.threadPosition - stream.streamPosition);
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if ( count ) {
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bufferPoint = stream.threadPosition % stream.bufferSize;
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buffer = stream.bufferSize - bufferPoint;
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readCount = buffer < count ? buffer : count;
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r = fread( stream.buffer + bufferPoint, 1, readCount, stream.file );
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stream.threadPosition += r;
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if ( r != readCount )
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stream.eof = qtrue;
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}
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}
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// LeaveCriticalSection (&stream.crit);
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||||
}
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||||
|
||||
/*
|
||||
===============
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||||
Sys_InitStreamThread
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||||
|
||||
================
|
||||
*/
|
||||
void Sys_InitStreamThread( void )
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
===============
|
||||
Sys_ShutdownStreamThread
|
||||
|
||||
================
|
||||
*/
|
||||
void Sys_ShutdownStreamThread( void )
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
===============
|
||||
Sys_BeginStreamedFile
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||||
|
||||
================
|
||||
*/
|
||||
void Sys_BeginStreamedFile( fileHandle_t f, int readAhead )
|
||||
{
|
||||
if ( stream.file ) {
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Com_Error( ERR_FATAL, "Sys_BeginStreamedFile: unclosed stream");
|
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}
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stream.file = f;
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stream.buffer = Z_Malloc( readAhead );
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stream.bufferSize = readAhead;
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stream.streamPosition = 0;
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stream.threadPosition = 0;
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stream.eof = qfalse;
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||||
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// let the thread start running
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||||
// LeaveCriticalSection( &stream.crit );
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||||
}
|
||||
|
||||
/*
|
||||
===============
|
||||
Sys_EndStreamedFile
|
||||
|
||||
================
|
||||
*/
|
||||
void Sys_EndStreamedFile( FILE *f )
|
||||
{
|
||||
if ( f != stream.file ) {
|
||||
Com_Error( ERR_FATAL, "Sys_EndStreamedFile: wrong file");
|
||||
}
|
||||
// don't leave critical section until another stream is started
|
||||
// EnterCriticalSection( &stream.crit );
|
||||
|
||||
stream.file = NULL;
|
||||
Z_Free( stream.buffer );
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
===============
|
||||
Sys_StreamedRead
|
||||
|
||||
================
|
||||
*/
|
||||
int Sys_StreamedRead( void *buffer, int size, int count, FILE *f )
|
||||
{
|
||||
int available;
|
||||
int remaining;
|
||||
int sleepCount;
|
||||
int copy;
|
||||
int bufferCount;
|
||||
int bufferPoint;
|
||||
byte *dest;
|
||||
|
||||
dest = (byte *)buffer;
|
||||
remaining = size * count;
|
||||
|
||||
if ( remaining <= 0 ) {
|
||||
Com_Error( ERR_FATAL, "Streamed read with non-positive size" );
|
||||
}
|
||||
|
||||
sleepCount = 0;
|
||||
while ( remaining > 0 ) {
|
||||
available = stream.threadPosition - stream.streamPosition;
|
||||
if ( !available ) {
|
||||
if (stream.eof)
|
||||
break;
|
||||
Sys_StreamThread();
|
||||
continue;
|
||||
}
|
||||
|
||||
bufferPoint = stream.streamPosition % stream.bufferSize;
|
||||
bufferCount = stream.bufferSize - bufferPoint;
|
||||
|
||||
copy = available < bufferCount ? available : bufferCount;
|
||||
if ( copy > remaining ) {
|
||||
copy = remaining;
|
||||
}
|
||||
memcpy( dest, stream.buffer + bufferPoint, copy );
|
||||
stream.streamPosition += copy;
|
||||
dest += copy;
|
||||
remaining -= copy;
|
||||
}
|
||||
|
||||
return (count * size - remaining) / size;
|
||||
}
|
||||
|
||||
/*
|
||||
===============
|
||||
Sys_StreamSeek
|
||||
|
||||
================
|
||||
*/
|
||||
void Sys_StreamSeek( FILE *f, int offset, int origin ) {
|
||||
|
||||
// halt the thread
|
||||
// EnterCriticalSection( &stream.crit );
|
||||
|
||||
// clear to that point
|
||||
fseek( f, offset, origin );
|
||||
stream.streamPosition = 0;
|
||||
stream.threadPosition = 0;
|
||||
stream.eof = qfalse;
|
||||
|
||||
// let the thread start running at the new position
|
||||
// LeaveCriticalSection( &stream.crit );
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
========================================================================
|
||||
|
||||
EVENT LOOP
|
||||
|
||||
========================================================================
|
||||
*/
|
||||
|
||||
#define MAX_QUED_EVENTS 64
|
||||
#define MASK_QUED_EVENTS ( MAX_QUED_EVENTS - 1 )
|
||||
|
||||
sysEvent_t eventQue[MAX_QUED_EVENTS];
|
||||
int eventHead, eventTail;
|
||||
byte sys_packetReceived[MAX_MSGLEN];
|
||||
|
||||
/*
|
||||
================
|
||||
Sys_QueEvent
|
||||
|
||||
A time of 0 will get the current time
|
||||
Ptr should either be null, or point to a block of data that can
|
||||
be freed by the game later.
|
||||
================
|
||||
*/
|
||||
void Sys_QueEvent( int time, sysEventType_t type, int value, int value2, int ptrLength, void *ptr ) {
|
||||
sysEvent_t *ev;
|
||||
|
||||
ev = &eventQue[ eventHead & MASK_QUED_EVENTS ];
|
||||
eventHead++;
|
||||
|
||||
if ( time == 0 ) {
|
||||
time = Sys_Milliseconds();
|
||||
}
|
||||
|
||||
ev->evTime = time;
|
||||
ev->evType = type;
|
||||
ev->evValue = value;
|
||||
ev->evValue2 = value2;
|
||||
ev->evPtrLength = ptrLength;
|
||||
ev->evPtr = ptr;
|
||||
}
|
||||
|
||||
/*
|
||||
================
|
||||
Sys_GetEvent
|
||||
|
||||
================
|
||||
*/
|
||||
sysEvent_t Sys_GetEvent( void ) {
|
||||
sysEvent_t ev;
|
||||
char *s;
|
||||
msg_t netmsg;
|
||||
netadr_t adr;
|
||||
|
||||
// return if we have data
|
||||
if ( eventHead > eventTail ) {
|
||||
eventTail++;
|
||||
return eventQue[ ( eventTail - 1 ) & MASK_QUED_EVENTS ];
|
||||
}
|
||||
|
||||
// pump the message loop
|
||||
// in vga this calls KBD_Update, under X, it calls GetEvent
|
||||
Sys_SendKeyEvents ();
|
||||
|
||||
// check for console commands
|
||||
s = Sys_ConsoleInput();
|
||||
if ( s ) {
|
||||
char *b;
|
||||
int len;
|
||||
|
||||
len = strlen( s ) + 1;
|
||||
b = malloc( len );
|
||||
strcpy( b, s );
|
||||
Sys_QueEvent( 0, SE_CONSOLE, 0, 0, len, b );
|
||||
}
|
||||
|
||||
// check for other input devices
|
||||
IN_Frame();
|
||||
|
||||
// check for network packets
|
||||
MSG_Init( &netmsg, sys_packetReceived, sizeof( sys_packetReceived ) );
|
||||
if ( Sys_GetPacket ( &adr, &netmsg ) ) {
|
||||
netadr_t *buf;
|
||||
int len;
|
||||
|
||||
// copy out to a seperate buffer for qeueing
|
||||
len = sizeof( netadr_t ) + netmsg.cursize;
|
||||
buf = malloc( len );
|
||||
*buf = adr;
|
||||
memcpy( buf+1, netmsg.data, netmsg.cursize );
|
||||
Sys_QueEvent( 0, SE_PACKET, 0, 0, len, buf );
|
||||
}
|
||||
|
||||
// return if we have data
|
||||
if ( eventHead > eventTail ) {
|
||||
eventTail++;
|
||||
return eventQue[ ( eventTail - 1 ) & MASK_QUED_EVENTS ];
|
||||
}
|
||||
|
||||
// create an empty event to return
|
||||
|
||||
memset( &ev, 0, sizeof( ev ) );
|
||||
ev.evTime = Sys_Milliseconds();
|
||||
|
||||
return ev;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
void Sys_AppActivate (void)
|
||||
{
|
||||
}
|
||||
|
||||
char *Sys_GetClipboardData(void)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void Sys_Print( const char *msg )
|
||||
{
|
||||
fputs(msg, stderr);
|
||||
}
|
||||
|
||||
int main (int argc, char **argv)
|
||||
{
|
||||
int oldtime, newtime;
|
||||
int len, i;
|
||||
char *cmdline;
|
||||
void SetProgramPath(char *path);
|
||||
|
||||
// go back to real user for config loads
|
||||
saved_euid = geteuid();
|
||||
seteuid(getuid());
|
||||
|
||||
SetProgramPath(argv[0]);
|
||||
|
||||
// merge the command line, this is kinda silly
|
||||
for (len = 1, i = 1; i < argc; i++)
|
||||
len += strlen(argv[i]) + 1;
|
||||
cmdline = malloc(len);
|
||||
*cmdline = 0;
|
||||
for (i = 1; i < argc; i++) {
|
||||
if (i > 1)
|
||||
strcat(cmdline, " ");
|
||||
strcat(cmdline, argv[i]);
|
||||
}
|
||||
Com_Init(cmdline);
|
||||
NET_Init();
|
||||
|
||||
fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
|
||||
|
||||
nostdout = Cvar_Get("nostdout", "0", 0);
|
||||
if (!nostdout->value) {
|
||||
fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
|
||||
// printf ("Linux Quake -- Version %0.3f\n", LINUX_VERSION);
|
||||
}
|
||||
|
||||
while (1)
|
||||
{
|
||||
// set low precision every frame, because some system calls
|
||||
// reset it arbitrarily
|
||||
Sys_LowFPPrecision ();
|
||||
|
||||
Com_Frame ();
|
||||
}
|
||||
}
|
||||
|
||||
#if 0
|
||||
/*
|
||||
================
|
||||
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");
|
||||
|
||||
}
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user