vm/objects.hpp

   1 namespace factor
   2 {
   3
   4 static const cell special_object_count = 70;
   5
   6 enum special_object {
   7         OBJ_WALKER_HOOK = 3,       /* non-local exit hook, used by library only */
   8         OBJ_CALLCC_1,              /* used to pass the value in callcc1 */
   9
  10         ERROR_HANDLER_QUOT = 5,    /* quotation called when VM throws an error */
  11         OBJ_ERROR,                 /* a marker consed onto kernel errors */
  12
  13         OBJ_CELL_SIZE = 7,         /* sizeof(cell) */
  14         OBJ_CPU,                   /* CPU architecture */
  15         OBJ_OS,                    /* operating system name */
  16
  17         OBJ_ARGS = 10,             /* command line arguments */
  18         OBJ_STDIN,                 /* stdin FILE* handle */
  19         OBJ_STDOUT,                /* stdout FILE* handle */
  20
  21         OBJ_IMAGE = 13,            /* image path name */
  22         OBJ_EXECUTABLE,            /* runtime executable path name */
  23
  24         OBJ_EMBEDDED = 15,         /* are we embedded in another app? */
  25         OBJ_EVAL_CALLBACK,         /* used when Factor is embedded in a C app */
  26         OBJ_YIELD_CALLBACK,        /* used when Factor is embedded in a C app */
  27         OBJ_SLEEP_CALLBACK,        /* used when Factor is embedded in a C app */
  28
  29         OBJ_STARTUP_QUOT = 20,     /* startup quotation */
  30         OBJ_GLOBAL,                /* global namespace */
  31         OBJ_SHUTDOWN_QUOT,         /* shutdown quotation */
  32
  33         /* Quotation compilation in quotations.c */
  34         JIT_PROLOG = 23,
  35         JIT_PRIMITIVE_WORD,
  36         JIT_PRIMITIVE,
  37         JIT_WORD_JUMP,
  38         JIT_WORD_CALL,
  39         JIT_IF_WORD,
  40         JIT_IF,
  41         JIT_EPILOG,
  42         JIT_RETURN,
  43         JIT_PROFILING,
  44         JIT_PUSH_IMMEDIATE,
  45         JIT_DIP_WORD,
  46         JIT_DIP,
  47         JIT_2DIP_WORD,
  48         JIT_2DIP,
  49         JIT_3DIP_WORD,
  50         JIT_3DIP,
  51         JIT_EXECUTE,
  52         JIT_DECLARE_WORD,
  53
  54         /* External entry points */
  55         C_TO_FACTOR_WORD,
  56         LAZY_JIT_COMPILE_WORD,
  57         UNWIND_NATIVE_FRAMES_WORD,
  58
  59         /* Incremented on every modify-code-heap call; invalidates call( inline
  60         caching */
  61         REDEFINITION_COUNTER = 47,
  62
  63         /* Callback stub generation in callbacks.c */
  64         CALLBACK_STUB = 48,
  65
  66         /* Polymorphic inline cache generation in inline_cache.c */
  67         PIC_LOAD = 49,
  68         PIC_TAG,
  69         PIC_TUPLE,
  70         PIC_CHECK_TAG,
  71         PIC_CHECK_TUPLE,
  72         PIC_HIT,
  73         PIC_MISS_WORD,
  74         PIC_MISS_TAIL_WORD,
  75
  76         /* Megamorphic cache generation in dispatch.c */
  77         MEGA_LOOKUP = 57,
  78         MEGA_LOOKUP_WORD,
  79         MEGA_MISS_WORD,
  80
  81         OBJ_UNDEFINED = 60,       /* default quotation for undefined words */
  82
  83         OBJ_STDERR = 61,          /* stderr FILE* handle */
  84
  85         OBJ_STAGE2 = 62,          /* have we bootstrapped? */
  86
  87         OBJ_CURRENT_THREAD = 63,
  88
  89         OBJ_THREADS = 64,
  90         OBJ_RUN_QUEUE = 65,
  91         OBJ_SLEEP_QUEUE = 66,
  92
  93         OBJ_VM_COMPILER = 67,     /* version string of the compiler we were built with */
  94 };
  95
  96 /* save-image-and-exit discards special objects that are filled in on startup
  97 anyway, to reduce image size */
  98 #define OBJ_FIRST_SAVE OBJ_STARTUP_QUOT
  99 #define OBJ_LAST_SAVE OBJ_STAGE2
 100
 101 inline static bool save_special_p(cell i)
 102 {
 103         return (i >= OBJ_FIRST_SAVE && i <= OBJ_LAST_SAVE);
 104 }
 105
 106 template<typename Iterator> void object::each_slot(Iterator &iter)
 107 {
 108         cell scan = (cell)this;
 109         cell payload_start = binary_payload_start();
 110         cell end = scan + payload_start;
 111
 112         scan += sizeof(cell);
 113
 114         while(scan < end)
 115         {
 116                 iter((cell *)scan);
 117                 scan += sizeof(cell);
 118         }
 119 }
 120
 121 }