An x86 assembly instruction has the following format:
[label:] mnemonic [operands] [;comment]
Label
A label specifies the numeric address of data or code. For example,
L1: MOV RAX, RBX
Here, L1 is a label that specifies the address of the instruction. Later, we can use a loop or jump instruction to jump to that location.
L1: MOV RAX, RBX ... JMP L1
This type of label is called a code label. A label can be a data label also. For example,
counter DWORD 10
Here, the counter is a data label and it specifies that the counter is the name of a 32-bit variable.
Mnemonic
An assembly instruction mnemonic represents the operation code of the corresponding binary machine code. For example, …






0 Comments