Asked by: Edvinas Tarrias
asked in category: General Last Updated: 13th May, 2020

What is Lea in assembly?

The LEA instruction is used to load a pointer into a register. It is actually an arithmetic instruction, and does not read RAM at all. When a memory operand is used as the source, the instruction loads the address of the operand, not the value.

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People also ask, what does Lea mean in assembly?

load effective address

Similarly, what is MOVQ Assembly? movq (assuming you're talking about x86) is a move of a quadword (64-bit value). This particular instruction: movq (%rsp), %rsp. looks very much like code that will walk up through stack frames.

Regarding this, how does Lea work Assembly?

The lea instruction places the address specified by its second operand into the register specified by its first operand. Note, the contents of the memory location are not loaded, only the effective address is computed and placed into the register. This is useful for obtaining a pointer into a memory region.

What is the difference between Lea and MOV?

The MOV instruction is a 'MOVe' effectively a copy of the address that the TABLE-ADDR label stands for. The LEA instruction is a 'Load Effective Address' which is an indirected instruction, which means that TABLE-ADDR points to a memory location at which the address to load is found.

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