AcessNative/acesskernel_src/main.c

   1 /*
   2  * Acess2 Native Kernel
   3  * - Acess kernel emulation on another OS using SDL and UDP
   4  *
   5  * Kernel Main
   6  */
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <signal.h>
  10 #include <stdint.h>
  11 #ifdef __LINUX__
  12 #include <sys/prctl.h>
  13 #endif
  14 #include <unistd.h>
  15 #include <string.h>
  16 #include "../../KernelLand/Kernel/include/logdebug.h"
  17
  18 #define VALGRIND_CLIENT 0
  19
  20 // === IMPORTS ===
  21 extern int      UI_Initialise(int Width, int Height);
  22 extern void     UI_MainLoop(void);
  23 extern int      VFS_Init(void);
  24 extern int      Video_Install(char **Arguments);
  25 extern int      NativeKeyboard_Install(char **Arguments);
  26 extern int      NativeFS_Install(char **Arguments);
  27 extern void     Debug_SetKTerminal(char *Path);
  28 extern int      VT_Install(char **Arguments);
  29 extern int      VFS_Mount(const char *Device, const char *MountPoint, const char *Filesystem, const char *Options);
  30 extern int      VFS_MkDir(const char *Path);
  31 extern int      SyscallServer(void);
  32 extern int      Server_Shutdown(void);
  33 extern const char       gsKernelVersion[];
  34 extern const char       gsGitHash[];
  35 extern int      giBuildNumber;
  36
  37 // === GLOBALS ===
  38 const char      *gsAcessDir = "../Usermode/Output/x86_64";
  39
  40 // === CODE ===
  41 int main(int argc, char *argv[])
  42 {
  43         char    **rootapp = NULL;
  44          int    rootapp_argc, i;
  45         // Parse command line settings
  46         for( i = 1; i < argc; i ++ )
  47         {
  48                 if( strcmp(argv[i], "--distroot") == 0 ) {
  49                         gsAcessDir = argv[++i];
  50                 }
  51                 else if( strcmp(argv[i], "--rootapp") == 0 ) {
  52                         rootapp = &argv[++i];
  53                         rootapp_argc = argc - i;
  54                         break;
  55                 }
  56                 else {
  57                         fprintf(stderr, "Unknown command line option '%s'\n", argv[i]);
  58                         return -1;
  59                 }
  60         }
  61
  62         // Kernel build information
  63         printf("Acess2 Native v%s\n", gsKernelVersion);
  64         printf(" Build %i, Git Hash %s\n", giBuildNumber, gsGitHash);
  65
  66         // Start UI subsystem
  67         UI_Initialise(800, 480);
  68
  69         // - Ignore SIGUSR1 (used to wake threads)
  70         #ifdef SIGUSR1
  71         signal(SIGUSR1, SIG_IGN);
  72         #endif
  73
  74         // Initialise VFS
  75         VFS_Init();
  76         // - Start IO Drivers
  77         if( Video_Install(NULL) ) {
  78                 Log_Error("Init", "Unable to load NativeVideo");
  79         }
  80         if( NativeKeyboard_Install(NULL) ) {
  81                 Log_Error("Init", "Unable to load NativeKeyboard");
  82         }
  83         NativeFS_Install(NULL);
  84         // - Start VTerm
  85         {
  86                 char    *args[] = {
  87                         "Video=NativeVideo",
  88                         "Input=NativeKeyboard",
  89                         NULL
  90                         };
  91                 VT_Install(args);
  92         }
  93
  94         VFS_MkDir("/Acess");
  95         VFS_Mount(gsAcessDir, "/Acess", "nativefs", "");
  96
  97         Debug_SetKTerminal("/Devices/VTerm/8");
  98
  99         // Start syscall server
 100         SyscallServer();
 101
 102         // Spawn root application
 103         if( rootapp )
 104         {
 105                  int    pid;
 106                  int    argcount = 0;
 107                 const char      *args[7+rootapp_argc+1+1];
 108
 109                 #if VALGRIND_CLIENT
 110                 args[argcount++] = "valgrind";
 111                 #endif
 112                 args[argcount++] = "./ld-acess";
 113                 args[argcount++] = "--open";    args[argcount++] = "/Devices/VTerm/0";
 114                 args[argcount++] = "--open";    args[argcount++] = "/Devices/VTerm/0";
 115                 args[argcount++] = "--open";    args[argcount++] = "/Devices/VTerm/0";
 116                 for( i = 0; i < rootapp_argc; i ++ )
 117                         args[argcount+i] = rootapp[i];
 118                 args[argcount+rootapp_argc] = NULL;
 119                 pid = spawnv(P_NOWAIT, "./ld-acess", args);
 120                 if(pid < 0) {
 121                         perror("Starting root application [fork(2)]");
 122                         return 1;
 123                 }
 124                 printf("Root application running as PID %i\n", pid);
 125         }
 126
 127         UI_MainLoop();
 128
 129         return 0;
 130 }
 131
 132 void AcessNative_Exit(void)
 133 {
 134         // TODO: Close client applications too
 135         Server_Shutdown();
 136         exit(0);
 137 }
 138
 139 uint64_t DivMod64U(uint64_t Num, uint64_t Den, uint64_t *Rem)
 140 {
 141         if(Rem) *Rem = Num % Den;
 142         return Num / Den;
 143 }
 144
 145 int Module_EnsureLoaded(const char *Name)
 146 {
 147         return 0;
 148 }
 149