vm/objects.hpp

   1 namespace factor
   2 {
   3
   4 static const cell special_object_count = 70;
   5
   6 enum special_object {
   7         OBJ_NAMESTACK,             /* used by library only */
   8         OBJ_CATCHSTACK,            /* used by library only, per-callback */
   9
  10         OBJ_CURRENT_CALLBACK = 2,  /* used by library only, per-callback */
  11         OBJ_WALKER_HOOK,           /* non-local exit hook, used by library only */
  12         OBJ_CALLCC_1,              /* used to pass the value in callcc1 */
  13
  14         ERROR_HANDLER_QUOT = 5,    /* quotation called when VM throws an error */
  15         OBJ_ERROR,                 /* a marker consed onto kernel errors */
  16
  17         OBJ_CELL_SIZE = 7,         /* sizeof(cell) */
  18         OBJ_CPU,                   /* CPU architecture */
  19         OBJ_OS,                    /* operating system name */
  20
  21         OBJ_ARGS = 10,             /* command line arguments */
  22         OBJ_STDIN,                 /* stdin FILE* handle */
  23         OBJ_STDOUT,                /* stdout FILE* handle */
  24
  25         OBJ_IMAGE = 13,            /* image path name */
  26         OBJ_EXECUTABLE,            /* runtime executable path name */
  27
  28         OBJ_EMBEDDED = 15,         /* are we embedded in another app? */
  29         OBJ_EVAL_CALLBACK,         /* used when Factor is embedded in a C app */
  30         OBJ_YIELD_CALLBACK,        /* used when Factor is embedded in a C app */
  31         OBJ_SLEEP_CALLBACK,        /* used when Factor is embedded in a C app */
  32
  33         OBJ_COCOA_EXCEPTION = 19,  /* Cocoa exception handler quotation */
  34
  35         OBJ_STARTUP_QUOT = 20,     /* startup quotation */
  36         OBJ_GLOBAL,                /* global namespace */
  37         OBJ_SHUTDOWN_QUOT,         /* shutdown quotation */
  38
  39         /* Quotation compilation in quotations.c */
  40         JIT_PROLOG = 23,
  41         JIT_PRIMITIVE_WORD,
  42         JIT_PRIMITIVE,
  43         JIT_WORD_JUMP,
  44         JIT_WORD_CALL,
  45         JIT_IF_WORD,
  46         JIT_IF,
  47         JIT_EPILOG,
  48         JIT_RETURN,
  49         JIT_PROFILING,
  50         JIT_PUSH_IMMEDIATE,
  51         JIT_DIP_WORD,
  52         JIT_DIP,
  53         JIT_2DIP_WORD,
  54         JIT_2DIP,
  55         JIT_3DIP_WORD,
  56         JIT_3DIP,
  57         JIT_EXECUTE,
  58         JIT_DECLARE_WORD,
  59
  60         /* External entry points */
  61         C_TO_FACTOR_WORD,
  62         LAZY_JIT_COMPILE_WORD,
  63         UNWIND_NATIVE_FRAMES_WORD,
  64
  65         /* Incremented on every modify-code-heap call; invalidates call( inline
  66         caching */
  67         REDEFINITION_COUNTER = 47,
  68
  69         /* Callback stub generation in callbacks.c */
  70         CALLBACK_STUB = 48,
  71
  72         /* Polymorphic inline cache generation in inline_cache.c */
  73         PIC_LOAD = 49,
  74         PIC_TAG,
  75         PIC_TUPLE,
  76         PIC_CHECK_TAG,
  77         PIC_CHECK_TUPLE,
  78         PIC_HIT,
  79         PIC_MISS_WORD,
  80         PIC_MISS_TAIL_WORD,
  81
  82         /* Megamorphic cache generation in dispatch.c */
  83         MEGA_LOOKUP = 57,
  84         MEGA_LOOKUP_WORD,
  85         MEGA_MISS_WORD,
  86
  87         OBJ_UNDEFINED = 60,       /* default quotation for undefined words */
  88
  89         OBJ_STDERR = 61,          /* stderr FILE* handle */
  90
  91         OBJ_STAGE2 = 62,          /* have we bootstrapped? */
  92
  93         OBJ_CURRENT_THREAD = 63,
  94
  95         OBJ_THREADS = 64,
  96         OBJ_RUN_QUEUE = 65,
  97         OBJ_SLEEP_QUEUE = 66,
  98
  99         OBJ_VM_COMPILER = 67,    /* version string of the compiler we were built with */
 100 };
 101
 102 /* save-image-and-exit discards special objects that are filled in on startup
 103 anyway, to reduce image size */
 104 #define OBJ_FIRST_SAVE OBJ_STARTUP_QUOT
 105 #define OBJ_LAST_SAVE OBJ_STAGE2
 106
 107 inline static bool save_special_p(cell i)
 108 {
 109         return (i >= OBJ_FIRST_SAVE && i <= OBJ_LAST_SAVE);
 110 }
 111
 112 template<typename Iterator> void object::each_slot(Iterator &iter)
 113 {
 114         cell scan = (cell)this;
 115         cell payload_start = binary_payload_start();
 116         cell end = scan + payload_start;
 117
 118         scan += sizeof(cell);
 119
 120         while(scan < end)
 121         {
 122                 iter((cell *)scan);
 123                 scan += sizeof(cell);
 124         }
 125 }
 126
 127 }