Nop?

petersa · 21st May 2001, 08:07

Just wondering what Nop is used for? Obviously there's some use for it because it's there.

THEMike · 21st May 2001, 08:24

because a label has to be followed by at least one instruction.

So if you have a conditional jump on something like DLLCompareVersions then you can jump somewhere and do nothing in one case.

petersa · 21st May 2001, 08:33

Okay...would SectionEnd count as an instruction? If so, are there any cases outside sections where you would use Nop?

yazno · 21st May 2001, 08:52

hi,

1. yes, as labels are only valid within a section/function.
2. yes, in functions

cu yzo

21st May 2001, 08:24	#2
THEMike Bastificator [Alumni] Join Date: May 2000 Location: #nullsoft Posts: 1,260	because a label has to be followed by at least one instruction. So if you have a conditional jump on something like DLLCompareVersions then you can jump somewhere and do nothing in one case. "Beer?"

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21st May 2001, 08:07	#1
petersa Senior Member Join Date: Apr 2001 Location: Melbourne, Australia Posts: 207	Just wondering what Nop is used for? Obviously there's some use for it because it's there.

21st May 2001, 08:33	#3
petersa Senior Member Join Date: Apr 2001 Location: Melbourne, Australia Posts: 207	Okay...would SectionEnd count as an instruction? If so, are there any cases outside sections where you would use Nop?

21st May 2001, 08:52	#4
yazno Member Join Date: Oct 2000 Posts: 92	hi, 1. yes, as labels are only valid within a section/function. 2. yes, in functions cu yzo