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Relative pointers

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This commit is contained in:
gingerBill
2020-05-15 17:37:00 +01:00
parent 8b066b2456
commit ff92eb9112
14 changed files with 534 additions and 40 deletions
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78
src/types.cpp
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@@ -126,7 +126,7 @@ enum StructSoaKind {
enum TypeAtomOpKind {
TypeAtomOp_Invalid,
TypeAtomOp_index_get,
TypeAtomOp_index_set,
TypeAtomOp_slice,
@@ -151,7 +151,7 @@ struct TypeStruct {
i64 custom_align;
Entity * names;
TypeAtomOpTable *atom_op_table;
Type * soa_elem;
@@ -290,8 +290,14 @@ struct TypeProc {
Type *elem; \
bool is_x86_mmx; \
}) \
TYPE_KIND(RelativePointer, struct { \
Type *pointer_type; \
Type *base_integer; \
}) \
TYPE_KIND(RelativeSlice, struct { \
Type *slice_type; \
Type *base_integer; \
})
enum TypeKind {
@@ -358,6 +364,10 @@ enum Typeid_Kind : u8 {
Typeid_Map,
Typeid_Bit_Field,
Typeid_Bit_Set,
Typeid_Opaque,
Typeid_Simd_Vector,
Typeid_Relative_Pointer,
Typeid_Relative_Slice,
};
@@ -611,6 +621,8 @@ gb_global Type *t_type_info_bit_field = nullptr;
gb_global Type *t_type_info_bit_set = nullptr;
gb_global Type *t_type_info_opaque = nullptr;
gb_global Type *t_type_info_simd_vector = nullptr;
gb_global Type *t_type_info_relative_pointer = nullptr;
gb_global Type *t_type_info_relative_slice = nullptr;
gb_global Type *t_type_info_named_ptr = nullptr;
gb_global Type *t_type_info_integer_ptr = nullptr;
@@ -637,6 +649,8 @@ gb_global Type *t_type_info_bit_field_ptr = nullptr;
gb_global Type *t_type_info_bit_set_ptr = nullptr;
gb_global Type *t_type_info_opaque_ptr = nullptr;
gb_global Type *t_type_info_simd_vector_ptr = nullptr;
gb_global Type *t_type_info_relative_pointer_ptr = nullptr;
gb_global Type *t_type_info_relative_slice_ptr = nullptr;
gb_global Type *t_allocator = nullptr;
gb_global Type *t_allocator_ptr = nullptr;
@@ -661,6 +675,9 @@ void init_map_internal_types(Type *type);
Type * bit_set_to_int(Type *t);
bool are_types_identical(Type *x, Type *y);
bool is_type_pointer(Type *t);
bool is_type_slice(Type *t);
bool is_type_integer(Type *t);
bool type_ptr_set_exists(PtrSet<Type *> *s, Type *t) {
if (ptr_set_exists(s, t)) {
@@ -837,9 +854,23 @@ Type *alloc_type_enum() {
return t;
}
Type *alloc_type_relative_pointer(Type *pointer_type, Type *base_integer) {
GB_ASSERT(is_type_pointer(pointer_type));
GB_ASSERT(is_type_integer(base_integer));
Type *t = alloc_type(Type_RelativePointer);
t->RelativePointer.pointer_type = pointer_type;
t->RelativePointer.base_integer = base_integer;
return t;
}
Type *alloc_type_relative_slice(Type *slice_type, Type *base_integer) {
GB_ASSERT(is_type_slice(slice_type));
GB_ASSERT(is_type_integer(base_integer));
Type *t = alloc_type(Type_RelativeSlice);
t->RelativeSlice.slice_type = slice_type;
t->RelativeSlice.base_integer = base_integer;
return t;
}
Type *alloc_type_named(String name, Type *base, Entity *type_name) {
Type *t = alloc_type(Type_Named);
@@ -1197,6 +1228,14 @@ bool is_type_generic(Type *t) {
return t->kind == Type_Generic;
}
bool is_type_relative_pointer(Type *t) {
t = base_type(t);
return t->kind == Type_RelativePointer;
}
bool is_type_relative_slice(Type *t) {
t = base_type(t);
return t->kind == Type_RelativeSlice;
}
Type *core_array_type(Type *t) {
@@ -1756,6 +1795,10 @@ bool type_has_nil(Type *t) {
return false;
case Type_Opaque:
return true;
case Type_RelativePointer:
case Type_RelativeSlice:
return true;
}
return false;
}
@@ -2865,6 +2908,11 @@ i64 type_align_of_internal(Type *t, TypePath *path) {
// IMPORTANT TODO(bill): Figure out the alignment of vector types
return gb_clamp(next_pow2(type_size_of_internal(t, path)), 1, build_context.max_align);
}
case Type_RelativePointer:
return type_align_of_internal(t->RelativePointer.base_integer, path);
case Type_RelativeSlice:
return type_align_of_internal(t->RelativeSlice.base_integer, path);
}
// return gb_clamp(next_pow2(type_size_of(t)), 1, build_context.max_align);
@@ -3138,6 +3186,11 @@ i64 type_size_of_internal(Type *t, TypePath *path) {
Type *elem = t->SimdVector.elem;
return count * type_size_of_internal(elem, path);
}
case Type_RelativePointer:
return type_size_of_internal(t->RelativePointer.base_integer, path);
case Type_RelativeSlice:
return 2*type_size_of_internal(t->RelativeSlice.base_integer, path);
}
// Catch all
@@ -3536,6 +3589,19 @@ gbString write_type_to_string(gbString str, Type *type) {
str = write_type_to_string(str, type->SimdVector.elem);
}
break;
case Type_RelativePointer:
str = gb_string_append_fmt(str, "#relative(");
str = write_type_to_string(str, type->RelativePointer.base_integer);
str = gb_string_append_fmt(str, ") ");
str = write_type_to_string(str, type->RelativePointer.pointer_type);
break;
case Type_RelativeSlice:
str = gb_string_append_fmt(str, "#relative(");
str = write_type_to_string(str, type->RelativeSlice.base_integer);
str = gb_string_append_fmt(str, ") ");
str = write_type_to_string(str, type->RelativeSlice.slice_type);
break;
}
return str;