• The push instruction will grow the stack by either 8 bytes (for x64, 4 for x86), then push the contents of a register onto the new stack space.
  • Here’s a simple example of pushing and popping a value in x86-64 assembly
  • Stack is managed via stack intended CPU register, also called stack pointer, so when CPU perform POP or PUSH the stack pointer will load/store a register or...
  • command push operand. PUSHes (saves) data onto the stack. Decrements the stack pointer and then stores the source operand on the top of the stack...
  • Push and Pop Instruction in Assembly Language.
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  • The easiest and most common way to use the stack is with the dedicated "push" and "pop" instructions.
  • Push Word, Doubleword or Quadword Onto the Stack.
  • The data of AX is pushed to memory location DS: FFFA which is 16FFA in this example. ORG 100h MOV AX, 1C2Bh ;Set AX to 1C2B PUSH AX ;Set SP=SP-2
  • The push instruction is used to push values on the stack. The pusha instruction is used to push the 16-bit registers in the following order: AX, CX, DX, BX, SP, BP, SI, DI.