namespace factor {
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-typedef unsigned long long u64;
-typedef signed char s8;
-typedef signed short s16;
-typedef signed int s32;
-typedef signed long long s64;
-
-#ifdef _WIN64
-typedef long long fixnum;
-typedef unsigned long long cell;
-#else
-typedef long fixnum;
-typedef unsigned long cell;
-#endif
+typedef intptr_t fixnum;
+typedef uintptr_t cell;
inline static cell align(cell a, cell b) { return (a + (b - 1)) & ~(b - 1); }
static const cell data_alignment = 16;
+// Must match leaf-stack-frame-size in basis/bootstrap/layouts.factor
+#define LEAF_FRAME_SIZE 16
+
#define WORD_SIZE (signed)(sizeof(cell) * 8)
#define TAG_MASK 15
#define UNTAG(x) ((cell)(x) & ~TAG_MASK)
#define RETAG(x, tag) (UNTAG(x) | (tag))
-/*** Tags ***/
-#define FIXNUM_TYPE 0
-#define F_TYPE 1
-#define ARRAY_TYPE 2
-#define FLOAT_TYPE 3
-#define QUOTATION_TYPE 4
-#define BIGNUM_TYPE 5
-#define ALIEN_TYPE 6
-#define TUPLE_TYPE 7
-#define WRAPPER_TYPE 8
-#define BYTE_ARRAY_TYPE 9
-#define CALLSTACK_TYPE 10
-#define STRING_TYPE 11
-#define WORD_TYPE 12
-#define DLL_TYPE 13
-
-#define TYPE_COUNT 14
+// Type tags, should be kept in sync with:
+// basis/bootstrap/layouts.factor
+enum type_tags {
+ FIXNUM_TYPE,
+ F_TYPE,
+ ARRAY_TYPE,
+ FLOAT_TYPE,
+ QUOTATION_TYPE,
+ BIGNUM_TYPE,
+ ALIEN_TYPE,
+ TUPLE_TYPE,
+ WRAPPER_TYPE,
+ BYTE_ARRAY_TYPE,
+ CALLSTACK_TYPE,
+ STRING_TYPE,
+ WORD_TYPE,
+ DLL_TYPE,
+
+ TYPE_COUNT
+};
static inline const char* type_name(cell type) {
- switch (type) {
- case FIXNUM_TYPE:
- return "fixnum";
- case F_TYPE:
- return "f";
- case ARRAY_TYPE:
- return "array";
- case FLOAT_TYPE:
- return "float";
- case QUOTATION_TYPE:
- return "quotation";
- case BIGNUM_TYPE:
- return "bignum";
- case ALIEN_TYPE:
- return "alien";
- case TUPLE_TYPE:
- return "tuple";
- case WRAPPER_TYPE:
- return "wrapper";
- case BYTE_ARRAY_TYPE:
- return "byte-array";
- case CALLSTACK_TYPE:
- return "callstack";
- case STRING_TYPE:
- return "string";
- case WORD_TYPE:
- return "word";
- case DLL_TYPE:
- return "dll";
- default:
+ static const char* const type_names[]={
+ "fixnum",
+ "f",
+ "array",
+ "float",
+ "quotation",
+ "bignum",
+ "alien",
+ "tuple",
+ "wrapper",
+ "byte-array",
+ "callstack",
+ "string",
+ "word",
+ "dll",
+ };
+
+ if (type>=TYPE_COUNT) {
FACTOR_ASSERT(false);
return "";
}
+ return type_names[type];
}
enum code_block_type {
- code_block_unoptimized,
- code_block_optimized,
- code_block_pic
+ CODE_BLOCK_UNOPTIMIZED,
+ CODE_BLOCK_OPTIMIZED,
+ CODE_BLOCK_PIC
};
-/* Constants used when floating-point trap exceptions are thrown */
+// Constants used when floating-point trap exceptions are thrown
enum {
FP_TRAP_INVALID_OPERATION = 1 << 0,
FP_TRAP_OVERFLOW = 1 << 1,
FP_TRAP_INEXACT = 1 << 4,
};
-/* What Factor calls 'f' */
+// What Factor calls 'f'
static const cell false_object = F_TYPE;
inline static bool immediate_p(cell obj) {
- /* We assume that fixnums have tag 0 and false_object has tag 1 */
+ // We assume that fixnums have tag 0 and false_object has tag 1
return TAG(obj) <= F_TYPE;
}
inline static fixnum untag_fixnum(cell tagged) {
-#ifdef FACTOR_DEBUG
FACTOR_ASSERT(TAG(tagged) == FIXNUM_TYPE);
-#endif
- return ((fixnum) tagged) >> TAG_BITS;
+ return ((fixnum)tagged) >> TAG_BITS;
}
inline static cell tag_fixnum(fixnum untagged) {
- return (untagged << TAG_BITS) | FIXNUM_TYPE;
+ return ( (cell)untagged << TAG_BITS) | FIXNUM_TYPE;
}
#define NO_TYPE_CHECK static const cell type_number = TYPE_COUNT
struct object {
NO_TYPE_CHECK;
+ // header format (bits indexed with least significant as zero):
+ // bit 0 : free?
+ // bit 1 : forwarding pointer?
+ // if not forwarding:
+ // bit 2-5 : tag
+ // bit 7-end : hashcode
+ // if forwarding:
+ // bit 2-end : forwarding pointer
cell header;
- cell size() const;
+ template <typename Fixup> cell base_size(Fixup fixup) const;
template <typename Fixup> cell size(Fixup fixup) const;
+ cell size() const;
- cell binary_payload_start() const;
- template <typename Fixup> cell binary_payload_start(Fixup fixup) const;
+ cell slot_count() const;
+ template <typename Fixup> cell slot_count(Fixup fixup) const;
cell* slots() const { return (cell*)this; }
template <typename Iterator> void each_slot(Iterator& iter);
- /* Only valid for objects in tenured space; must cast to free_heap_block
- to do anything with it if its free */
+ // Only valid for objects in tenured space; must cast to free_heap_block
+ // to do anything with it if its free
bool free_p() const { return (header & 1) == 1; }
cell type() const { return (header >> 2) & TAG_MASK; }
object* forwarding_pointer() const { return (object*)UNTAG(header); }
- void forward_to(object* pointer) { header = ((cell) pointer | 2); }
+ void forward_to(object* pointer) { header = ((cell)pointer | 2); }
};
-/* Assembly code makes assumptions about the layout of this struct */
+// Assembly code makes assumptions about the layout of this struct
struct array : public object {
static const cell type_number = ARRAY_TYPE;
static const cell element_size = sizeof(cell);
- /* tagged */
+ // tagged
cell capacity;
cell* data() const { return (cell*)(this + 1); }
};
-/* These are really just arrays, but certain elements have special
- significance */
+// These are really just arrays, but certain elements have special
+// significance
struct tuple_layout : public array {
NO_TYPE_CHECK;
- /* tagged */
+ // tagged
cell klass;
- /* tagged fixnum */
+ // tagged fixnum
cell size;
- /* tagged fixnum */
+ // tagged fixnum
cell echelon;
};
struct bignum : public object {
static const cell type_number = BIGNUM_TYPE;
static const cell element_size = sizeof(cell);
- /* tagged */
+ // tagged
cell capacity;
cell* data() const { return (cell*)(this + 1); }
struct byte_array : public object {
static const cell type_number = BYTE_ARRAY_TYPE;
static const cell element_size = 1;
- /* tagged */
+ // tagged
cell capacity;
#ifndef FACTOR_64
}
};
-/* Assembly code makes assumptions about the layout of this struct */
+// Assembly code makes assumptions about the layout of this struct
struct string : public object {
static const cell type_number = STRING_TYPE;
- /* tagged num of chars */
+ // tagged num of chars
cell length;
- /* tagged */
+ // tagged
cell aux;
- /* tagged */
+ // tagged
cell hashcode;
- u8* data() const { return (u8*)(this + 1); }
+ uint8_t* data() const { return (uint8_t*)(this + 1); }
};
struct code_block;
-/* Assembly code makes assumptions about the layout of this struct:
- basis/bootstrap/images/images.factor
- basis/compiler/constants/constants.factor
- core/bootstrap/primitives.factor
-*/
+// Assembly code makes assumptions about the layout of this struct:
+// basis/bootstrap/images/images.factor
+// basis/compiler/constants/constants.factor
+// core/bootstrap/primitives.factor
+
struct word : public object {
static const cell type_number = WORD_TYPE;
- /* TAGGED hashcode */
+ // TAGGED hashcode
cell hashcode;
- /* TAGGED word name */
+ // TAGGED word name
cell name;
- /* TAGGED word vocabulary */
+ // TAGGED word vocabulary
cell vocabulary;
- /* TAGGED definition */
+ // TAGGED definition
cell def;
- /* TAGGED property assoc for library code */
+ // TAGGED property assoc for library code
cell props;
- /* TAGGED alternative entry point for direct non-tail calls. Used for inline
- * caching */
+ // TAGGED alternative entry point for direct non-tail calls. Used for inline
+ // caching
cell pic_def;
- /* TAGGED alternative entry point for direct tail calls. Used for inline
- * caching */
+ // TAGGED alternative entry point for direct tail calls. Used for inline
+ // caching
cell pic_tail_def;
- /* TAGGED machine code for sub-primitive */
+ // TAGGED machine code for sub-primitive
cell subprimitive;
- /* UNTAGGED entry point: jump here to execute word */
- void* entry_point;
- /* UNTAGGED compiled code block */
+ // UNTAGGED entry point: jump here to execute word
+ cell entry_point;
+ // UNTAGGED compiled code block
- /* defined in code_blocks.hpp */
+ // defined in code_blocks.hpp
code_block* code() const;
};
-/* Assembly code makes assumptions about the layout of this struct */
+// Assembly code makes assumptions about the layout of this struct
struct wrapper : public object {
static const cell type_number = WRAPPER_TYPE;
cell object;
};
-/* Assembly code makes assumptions about the layout of this struct */
+// Assembly code makes assumptions about the layout of this struct
struct boxed_float : object {
static const cell type_number = FLOAT_TYPE;
double n;
};
-/* Assembly code makes assumptions about the layout of this struct:
- basis/bootstrap/images/images.factor
- basis/compiler/constants/constants.factor
- core/bootstrap/primitives.factor
-*/
+// Assembly code makes assumptions about the layout of this struct:
+// basis/bootstrap/images/images.factor
+// basis/compiler/constants/constants.factor
+// core/bootstrap/primitives.factor
+
struct quotation : public object {
static const cell type_number = QUOTATION_TYPE;
- /* tagged */
+ // tagged
cell array;
- /* tagged */
+ // tagged
cell cached_effect;
- /* tagged */
+ // tagged
cell cache_counter;
- /* UNTAGGED entry point; jump here to call quotation */
- void* entry_point;
+ // UNTAGGED entry point; jump here to call quotation
+ cell entry_point;
- /* defined in code_blocks.hpp */
+ // defined in code_blocks.hpp
code_block* code() const;
};
-/* Assembly code makes assumptions about the layout of this struct */
+// Assembly code makes assumptions about the layout of this struct
struct alien : public object {
static const cell type_number = ALIEN_TYPE;
- /* tagged */
+ // tagged
cell base;
- /* tagged */
+ // tagged
cell expired;
- /* untagged */
+ // untagged
cell displacement;
- /* untagged */
+ // untagged
cell address;
void update_address() {
struct dll : public object {
static const cell type_number = DLL_TYPE;
- /* tagged byte array holding a C string */
+ // tagged byte array holding a C string
cell path;
- /* OS-specific handle */
+ // OS-specific handle
void* handle;
};
struct callstack : public object {
static const cell type_number = CALLSTACK_TYPE;
- /* tagged */
+ // tagged
cell length;
- void* frame_top_at(cell offset) const {
- return (void*)((char*)(this + 1) + offset);
+ cell frame_top_at(cell offset) const {
+ return (cell)(this + 1) + offset;
}
void* top() const { return (void*)(this + 1); }
struct tuple : public object {
static const cell type_number = TUPLE_TYPE;
- /* tagged layout */
+ // tagged layout
cell layout;
cell* data() const { return (cell*)(this + 1); }
};
-struct data_root_range {
- cell* start;
- cell len;
+inline static cell tuple_capacity(const tuple_layout *layout) {
+ return untag_fixnum(layout->size);
+}
- explicit data_root_range(cell* start_, cell len_)
- : start(start_), len(len_) {}
-};
+inline static cell tuple_size(const tuple_layout* layout) {
+ return sizeof(tuple) + tuple_capacity(layout) * sizeof(cell);
+}
+
+inline static cell string_capacity(const string* str) {
+ return untag_fixnum(str->length);
+}
+
+inline static cell string_size(cell size) { return sizeof(string) + size; }
}
projects / factor.git / blobdiff