XCHG

XCHG is an assembly language instruction that stands for "exchange." It is used to swap the contents of two operands, typically registers or memory locations.

The XCHG instruction has the following syntax:

The destination and source operands can be registers, memory locations, or a combination of both.

Here are a few examples to illustrate the usage of XCHG:

1.Swapping registers:

In this example, the XCHG instruction is used to swap the contents of the EAX and EBX registers. The initial values of EAX and EBX are 10 and 20, respectively. After the XCHG instruction, EAX will contain 20, and EBX will contain 10.

2.Swapping memory locations:

In this example, the XCHG instruction is used to swap the contents of memory locations value1 and value2. The values stored at these memory locations are initially 100 and 200, respectively. After the XCHG instruction, the value at value1 will be 200, and the value at value2 will be 100.

The XCHG instruction is a useful tool for exchanging the values of two operands efficiently in assembly language. It is often used in various programming scenarios, such as swapping values, implementing synchronization mechanisms, or performing data transformations.