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18 Cards in this Set
- Front
- Back
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Which register points to the stack?
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ESP
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In what order are items placed and removed onto/from the stack?
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last in first out
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Is the stack pointer incremented or decremented when pushing new items to the stack?
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decremented
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Is the stack pointer incremented or decremented when popping items from the stack?
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incremented
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What determines the value ESP is incremented/decremented?
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the attribute of the operand providing the data
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What instruction is used to add something to the stack?
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PUSH
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What instruction is used to remove something from the stack?
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POP
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What size values may be pushed/popped to/from the stack?
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16-bit and 32-bit (WORD & DOUBLEWORD)
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What do the instructions, PUSHFD & POPFD, do?
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push and pop EFLAGS register
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What do the instructions, PUSHAD & POPAD, do?
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push and pop all general 32-bit registers to the stack
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What doe the instructions, PUSHA & POPA, do?
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push and pop all general 16-bit registers to the stack
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When documenting procedures, it is important to note which registers the procedure _________ and ________.
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receives, returns
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What is the purpose of the CALL instruction?
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calls a procedure
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When the CALL instruction is invoked, what occurs?
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EIP is pointing to the instruction directly following the CALL instruction. EIP is pushed to the stack. ESP is decremented and EIP is stored in the stack
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What instruction ends a CALL instruction?
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ret
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When the instruction, ret, is invoked, what occurs?
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ESP is incremented, EIP is popped from the stack and points to the instruction immediately following the CALL instruction
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When the operator, USES, is invoked, what occurs?
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the registers following the USES operator are pushed onto the stack and are popped immediately preceding the ret instruction
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When should you NOT push a register?
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when there is a possibility the data stored in the register could be overwritten when popping from the stack.
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