enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Addressing mode - Wikipedia

    en.wikipedia.org/wiki/Addressing_mode

    An addressing mode specifies how to calculate the effective memory address of an operand by using information held in registers and/or constants contained within a machine instruction or elsewhere. In computer programming, addressing modes are primarily of interest to those who write in assembly languages and to compiler writers.

  3. Offset (computer science) - Wikipedia

    en.wikipedia.org/wiki/Offset_(computer_science)

    In computer science, an offset within an array or other data structure object is an integer indicating the distance (displacement) between the beginning of the object and a given element or point, presumably within the same object.

  4. Memory address - Wikipedia

    en.wikipedia.org/wiki/Memory_address

    A computer program can access an address given explicitly – in low-level programming this is usually called an absolute address, or sometimes a specific address, and is known as pointer data type in higher-level languages. But a program can also use relative address which specifies a location in relation to somewhere else (the base address).

  5. ModR/M - Wikipedia

    en.wikipedia.org/wiki/ModR/M

    Under MIB addressing, the base and displacement are used to compute an effective address as base + displacement. [ 1 ] : §3.1.1.3 The register specified by the SIB byte's INDEX field does not participate in this effective-address calculation, but is instead treated as a separate input argument to the instructions using this addressing mode.

  6. Position-independent code - Wikipedia

    en.wikipedia.org/wiki/Position-independent_code

    The invention of dynamic address translation (the function provided by an MMU) originally reduced the need for position-independent code because every process could have its own independent address space (range of addresses). However, multiple simultaneous jobs using the same code created a waste of physical memory.

  7. Base address - Wikipedia

    en.wikipedia.org/wiki/Base_address

    In computing, a base address is an address serving as a reference point ("base") for other addresses. Related addresses can be accessed using an addressing scheme.. Under the relative addressing scheme, to obtain an absolute address, the relevant base address is taken and an offset (aka displacement) is added to it.

  8. Orthogonal instruction set - Wikipedia

    en.wikipedia.org/wiki/Orthogonal_instruction_set

    Direct address: ADD.A address 1 — add the value stored at address 1; Memory indirect: ADD.M address 1 — read the value in address 1, use that value as another address and add that value; Many ISAs also have registers that can be used for addressing as well as math tasks. This can be used in a one-address format if a single address register ...

  9. Pointer swizzling - Wikipedia

    en.wikipedia.org/wiki/Pointer_swizzling

    In computer science, pointer swizzling is the conversion of references based on name or position into direct pointer references (memory addresses).It is typically performed during deserialization or loading of a relocatable object from a disk file, such as an executable file or pointer-based data structure.