〽
〽
〽
〽
Pattern Language
Home
Search
⌃K
Links
Comment on page

ptr

The Pointer library contains helper functions to deal with pointer types. The relative_to functions are meant to be used with the [[pointer_base]] attribute

Types

std::ptr::NullablePtr

A nullable pointer, generic over both the pointee type and pointer type.
By nullable, we mean that if the pointer's value is zero (0x0), then the value will appear as padding rather than a pointer to something, but if the pointer's value is non-zero, that non-zero value will be treated as a pointer of type PointerTy which points to an element of type PointeeTy.
Example: A struct field called p_myInfo which is a nullable 64-bit pointer to an element of type MyInfoTy would be written as:
struct MyStruct {
std::ptr::NullablePtr<MyInfoTy, u64> p_myInfo;
}
struct NullablePtr<PointeeTy, PointerTy> { ... };

Functions

std::ptr::relative_to_pointer

Use the offset of the current pointer as start address
  • offset: The pointer's value
  • return: The new pointer base
fn relative_to_pointer(u128 offset);

std::ptr::relative_to_parent

Use the offset of the pointer's parent as start address
  • offset: The pointer's value
  • return: The new pointer base
fn relative_to_parent(u128 offset);

std::ptr::relative_to_end

Use the end of the file as pointer base address and use its value as offset backwards from there
  • offset: The pointer's value
  • return: The new pointer base
fn relative_to_end(u128 offset);
Last modified 8mo ago