Assembler:Commands:LOOP - Revision history

TheyCallMeTim13 at 15:49, 3 January 2018

2018-01-03T15:49:04Z

TheyCallMeTim13 at 15:24, 3 January 2018

2018-01-03T15:24:24Z

TheyCallMeTim13 at 22:10, 19 March 2017

2017-03-19T22:10:55Z

TheyCallMeTim13 at 11:27, 19 March 2017

2017-03-19T11:27:38Z

TheyCallMeTim13 at 04:31, 15 March 2017

2017-03-15T04:31:16Z

TheyCallMeTim13 at 04:13, 15 March 2017

2017-03-15T04:13:24Z

TheyCallMeTim13: Created page with ''''command''' loop ''operand'' The LOOP instruction assumes that the (E)CX register contains the loop count. When the loop instruction is executed, the (E)CX register is decreme…'

2017-03-14T08:44:50Z

Created page with ''''command''' loop ''operand'' The LOOP instruction assumes that the (E)CX register contains the loop count. When the loop instruction is executed, the (E)CX register is decreme…'

New page

'''command''' loop ''operand''

The LOOP instruction assumes that the (E)CX register contains the loop count. When the loop instruction is executed, the (E)CX register is decremented and the control jumps to the target label, until the (E)CX register value, i.e., the counter reaches the value zero.

Used for Loop control.

<div style="padding:2px;border:1px dashed #2f6fab;background-color:#f4f4f4;">
Performs a loop operation using the ECX or CX register as a counter. Each time the LOOP instruction is executed, the count register is decremented, then checked for 0. If the count is 0, the loop is terminated and program execution continues with the instruction following the LOOP instruction. If the count is not zero, a near jump is performed to the destination (target) operand, which is presumably the instruction at the beginning of the loop. If the address-size attribute is 32 bits, the ECX register is used as the count register; otherwise the CX register is used.

[http://x86.renejeschke.de/html/file_module_x86_id_161.html x86.renejeschke.de/html/file_module_x86_id_161.html]
</div>

=== Command Parameters ===
{|width="85%" cellpadding="10%" cellpadding="5%" cellspacing="0" border="0"
!align="left"|Parameter
!style="width: 80%;background-color:white;" align="left"|Description
|-
|operand
|The address or symbol to jump to
|}

== Examples ==
label(loop_start)
MOV ECX,10
loop_start:
// loop body
LOOP loop_start

== See also ==
* [[Assembler]]
* [[Cheat_Engine:Auto Assembler|Auto Assembler]]
* [[Assembler:Commands|Assembler Commands]]

== External links ==
* [https://wikipedia.org/wiki/X86_instruction_listings wikipedia.org/wiki/X86_instruction_listings]
* [https://wikibooks.org/wiki/X86_Assembly/Other_Instructions wikibooks.org/wiki/X86_Assembly/Other_Instructions]
* [http://www.asmpedia.org/index.php?title=Main_Page asmpedia.org]

← Older revision		Revision as of 15:49, 3 January 2018
Line 10:		Line 10:
	Performs a loop operation using the ECX or CX register as a counter. Each time the LOOP instruction is executed, the count register is decremented, then checked for 0. If the count is 0, the loop is terminated and program execution continues with the instruction following the LOOP instruction. If the count is not zero, a near jump is performed to the destination (target) operand, which is presumably the instruction at the beginning of the loop. If the address-size attribute is 32 bits, the ECX register is used as the count register; otherwise the CX register is used.		Performs a loop operation using the ECX or CX register as a counter. Each time the LOOP instruction is executed, the count register is decremented, then checked for 0. If the count is 0, the loop is terminated and program execution continues with the instruction following the LOOP instruction. If the count is not zero, a near jump is performed to the destination (target) operand, which is presumably the instruction at the beginning of the loop. If the address-size attribute is 32 bits, the ECX register is used as the count register; otherwise the CX register is used.

		+	[http://c9x.me/x86/html/file_module_x86_id_161.html c9x.me/x86/html/file_module_x86_id_161.html]
	</div>		</div>

@@ Line 10: / Line 10: @@
 Performs a loop operation using the ECX or CX register as a counter. Each time the LOOP instruction is executed, the count register is decremented, then checked for 0. If the count is 0, the loop is terminated and program execution continues with the instruction following the LOOP instruction. If the count is not zero, a near jump is performed to the destination (target) operand, which is presumably the instruction at the beginning of the loop. If the address-size attribute is 32 bits, the ECX register is used as the count register; otherwise the CX register is used.
 </div>
@@ Line 33: / Line 32: @@
 {{AssemblerCommandSeeAlso}}
-== External links ==
+{{Template:AssemblerCommandExternalLinks}}

← Older revision		Revision as of 11:27, 19 March 2017
Line 1:		Line 1:
		+	[[Category:Assembler]]
	'''command''' loop ''operand''		'''command''' loop ''operand''

← Older revision		Revision as of 04:31, 15 March 2017
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	* [http://x86.renejeschke.de/ x86.renejeschke.de]		* [http://x86.renejeschke.de/ x86.renejeschke.de]
	* [http://www.asmpedia.org/index.php?title=Main_Page asmpedia.org]		* [http://www.asmpedia.org/index.php?title=Main_Page asmpedia.org]
		+	* [http://ref.x86asm.net/ ref.x86asm.net]

@@ Line 31: / Line 31: @@
   LOOP loop_start
-== See also ==
+{{AssemblerCommandSeeAlso}}
 == External links ==

@@ Line 38: / Line 38: @@
 * [https://wikipedia.org/wiki/X86_instruction_listings wikipedia.org/wiki/X86_instruction_listings]
 * [https://wikibooks.org/wiki/X86_Assembly/Other_Instructions wikibooks.org/wiki/X86_Assembly/Other_Instructions]
 * [http://www.asmpedia.org/index.php?title=Main_Page asmpedia.org]