- 1 year ago
Assembly PUSH instruction with an OFFSET tag
In assembly language, the PUSH
instruction is used to push a value onto the top of the stack. The OFFSET
tag is not used with the PUSH
instruction directly. However, you can use OFFSET
when working with memory operands to get the offset of a variable or label.
Here's an example of how you can use the PUSH
instruction with an offset:
assemblysection .data
my_variable dd 42
section .text
global _start
_start:
; Push the value at the memory location of my_variable onto the stack
push dword [my_variable]
; ... (rest of your code)
In this example, we have a variable my_variable
defined in the .data
section, which holds the value 42
.
The PUSH
instruction is used to push the value stored at the memory location of my_variable
onto the stack. By enclosing my_variable
in square brackets [my_variable]
, we are dereferencing the memory location and accessing the value stored there.
Please note that the OFFSET
keyword is not necessary in this case because we are using a memory operand. OFFSET
is typically used in combination with labels or variables to get their memory address or offset.
The PUSH
instruction pushes the value onto the stack, decrementing the stack pointer and storing the value at the new top of the stack.