145 lines
3.9 KiB
C++
145 lines
3.9 KiB
C++
namespace factor {
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// Special object count and identifiers must be kept in sync with:
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// core/kernel/kernel.factor
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// basis/bootstrap/image/image.factor
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static const cell special_object_count = 85;
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enum special_object {
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OBJ_WALKER_HOOK = 3, /* non-local exit hook, used by library only */
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OBJ_CALLCC_1, /* used to pass the value in callcc1 */
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ERROR_HANDLER_QUOT = 5, /* quotation called when VM throws an error */
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OBJ_ERROR, /* a marker consed onto kernel errors */
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OBJ_CELL_SIZE = 7, /* sizeof(cell) */
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OBJ_CPU, /* CPU architecture */
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OBJ_OS, /* operating system name */
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OBJ_ARGS = 10, /* command line arguments */
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OBJ_STDIN, /* stdin FILE* handle */
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OBJ_STDOUT, /* stdout FILE* handle */
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OBJ_IMAGE = 13, /* image path name */
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OBJ_EXECUTABLE, /* runtime executable path name */
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OBJ_EMBEDDED = 15, /* are we embedded in another app? */
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OBJ_EVAL_CALLBACK, /* used when Factor is embedded in a C app */
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OBJ_YIELD_CALLBACK, /* used when Factor is embedded in a C app */
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OBJ_SLEEP_CALLBACK, /* used when Factor is embedded in a C app */
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OBJ_STARTUP_QUOT = 20, /* startup quotation */
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OBJ_GLOBAL, /* global namespace */
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OBJ_SHUTDOWN_QUOT, /* shutdown quotation */
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/* Quotation compilation in quotations.cpp */
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JIT_PROLOG = 23,
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JIT_PRIMITIVE_WORD,
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JIT_PRIMITIVE,
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JIT_WORD_JUMP,
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JIT_WORD_CALL,
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JIT_IF_WORD,
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JIT_IF,
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JIT_SAFEPOINT,
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JIT_EPILOG,
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JIT_RETURN,
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JIT_UNUSED,
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JIT_PUSH_IMMEDIATE,
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JIT_DIP_WORD,
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JIT_DIP,
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JIT_2DIP_WORD,
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JIT_2DIP,
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JIT_3DIP_WORD,
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JIT_3DIP,
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JIT_EXECUTE,
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JIT_DECLARE_WORD,
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/* External entry points. These are defined in the files in
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bootstrap/assembler/ */
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C_TO_FACTOR_WORD = 43,
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LAZY_JIT_COMPILE_WORD,
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UNWIND_NATIVE_FRAMES_WORD,
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GET_FPU_STATE_WORD,
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SET_FPU_STATE_WORD,
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SIGNAL_HANDLER_WORD,
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LEAF_SIGNAL_HANDLER_WORD,
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WIN_EXCEPTION_HANDLER,
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UNUSED2,
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/* Incremented on every modify-code-heap call; invalidates call( inline
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caching */
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REDEFINITION_COUNTER = 52,
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/* Callback stub generation in callbacks.cpp */
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CALLBACK_STUB = 53,
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/* Polymorphic inline cache generation in inline_cache.cpp */
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PIC_LOAD = 54,
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PIC_TAG,
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PIC_TUPLE,
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PIC_CHECK_TAG,
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PIC_CHECK_TUPLE,
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PIC_HIT,
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PIC_MISS_WORD,
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PIC_MISS_TAIL_WORD,
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/* Megamorphic cache generation in dispatch.cpp */
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MEGA_LOOKUP = 62,
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MEGA_LOOKUP_WORD,
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MEGA_MISS_WORD,
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OBJ_UNDEFINED = 65, /* default quotation for undefined words */
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OBJ_STDERR = 66, /* stderr FILE* handle */
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OBJ_STAGE2 = 67, /* have we bootstrapped? */
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OBJ_CURRENT_THREAD = 68,
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OBJ_THREADS = 69,
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OBJ_RUN_QUEUE = 70,
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OBJ_SLEEP_QUEUE = 71,
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OBJ_VM_COMPILER = 72, /* version string of the compiler we were built with */
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OBJ_WAITING_CALLBACKS = 73,
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OBJ_SIGNAL_PIPE = 74, /* file descriptor for pipe used to communicate signals
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only used on unix */
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OBJ_VM_COMPILE_TIME = 75, /* when the binary was built */
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OBJ_VM_VERSION = 76, /* factor version */
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OBJ_VM_GIT_LABEL = 77, /* git label (git describe --all --long) */
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/* Canonical truth value. In Factor, 't' */
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OBJ_CANONICAL_TRUE = 78,
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/* Canonical bignums. These needs to be kept in the image in case
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some heap objects refer to them. */
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OBJ_BIGNUM_ZERO,
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OBJ_BIGNUM_POS_ONE,
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OBJ_BIGNUM_NEG_ONE = 81,
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};
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/* save-image-and-exit discards special objects that are filled in on startup
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anyway, to reduce image size */
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inline static bool save_special_p(cell i) {
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/* Need to fix the order here. */
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return (i >= OBJ_STARTUP_QUOT && i <= LEAF_SIGNAL_HANDLER_WORD) ||
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(i >= REDEFINITION_COUNTER && i <= OBJ_UNDEFINED) ||
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i == OBJ_STAGE2 ||
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(i >= OBJ_CANONICAL_TRUE && i <= OBJ_BIGNUM_NEG_ONE);
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}
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template <typename Iterator> void object::each_slot(Iterator& iter) {
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cell* start = (cell*)this + 1;
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cell* end = start + slot_count();
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while (start < end) {
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iter(start);
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start++;
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}
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}
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}
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