Assembler:Commands:MUL - Revision history

TheyCallMeTim13 at 15:52, 3 January 2018

2018-01-03T15:52:28Z

2018-01-03T15:25:45Z

2017-03-19T22:12:01Z

2017-03-19T11:28:19Z

2017-03-15T04:32:14Z

2017-03-15T04:14:01Z

2017-03-15T00:18:55Z

2017-03-14T17:03:57Z

2017-03-14T16:57:44Z

2017-03-14T16:50:50Z

← Older revision		Revision as of 15:52, 3 January 2018
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	Performs an unsigned multiplication of the first operand (destination operand) and the second operand (source operand) and stores the result in the destination operand. The destination operand is an implied operand located in register AL, AX or EAX (depending on the size of the operand); the source operand is located in a general-purpose register or a memory location. The action of this instruction and the location of the result depends on the opcode and the operand size as shown in the following table.		Performs an unsigned multiplication of the first operand (destination operand) and the second operand (source operand) and stores the result in the destination operand. The destination operand is an implied operand located in register AL, AX or EAX (depending on the size of the operand); the source operand is located in a general-purpose register or a memory location. The action of this instruction and the location of the result depends on the opcode and the operand size as shown in the following table.

		+	[http://c9x.me/x86/html/file_module_x86_id_210.html c9x.me/x86/html/file_module_x86_id_210.html]
	</div>		</div>

@@ Line 43: / Line 43: @@
 Performs an unsigned multiplication of the first operand (destination operand) and the second operand (source operand) and stores the result in the destination operand. The destination operand is an implied operand located in register AL, AX or EAX (depending on the size of the operand); the source operand is located in a general-purpose register or a memory location. The action of this instruction and the location of the result depends on the opcode and the operand size as shown in the following table.
 </div>
@@ Line 87: / Line 86: @@
 {{AssemblerCommandSeeAlso}}
-== External links ==
+{{Template:AssemblerCommandExternalLinks}}

@@ Line 85: / Line 85: @@
   // edx = 0, eax = 6, edx:eax = 6
-== See also ==
+{{AssemblerCommandSeeAlso}}
 == External links ==

← Older revision		Revision as of 04:32, 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 92: / Line 92: @@
 * [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]

@@ Line 61: / Line 61: @@
   mov eax,2
   mov edx,3
-  mul edx
+  mul edx // eax = eax * edx
   // edx = 0, eax = 6, edx:eax = 6
   mov eax,2
   mov ecx,3
-  mul ecx
+  mul ecx // eax = eax * ecx
   // edx = 0, eax = 6, edx:eax = 6
   mov eax,0x10000000
   mov edx,0x10
-  mul edx
+  mul edx // eax = eax * edx
   // edx = 1, eax = 0, edx:eax = 0x100000000
   mov eax,2
   mov [00123ABC],3
-  mul [00123ABC]
+  mul [00123ABC] // eax = eax * [00123ABC]
   // edx = 0, eax = 6, edx:eax = 6
   mov eax,2
   mov [SomeSymbol],3
-  mul [SomeSymbol]
+  mul [SomeSymbol] // eax = eax * [SomeSymbol]
   // edx = 0, eax = 6, edx:eax = 6

@@ Line 4: / Line 4: @@
 Multiplies the operand by the accumulator register. Placing the high value in the data register and the low value in the accumulator register.
+ AH:AL = AL * operand : byte
 {| class="gallery" style="background-color:#f4f4f4"
-|+ Results
+!align="left"|Operand Size &nbsp;
-!align="left"|Operand Size
+!align="left"|Accumulator &nbsp;
-!align="left"|Source 1
+!align="left"|Operand &nbsp;
-!align="left"|Source 2
+!align="left"|Destination &nbsp;
 |-
 |Byte
@@ Line 35: / Line 37: @@
 The '''OF''' and '''CF''' flags are set to 0 if the upper half of the result is 0;
 otherwise, they are set to 1. The '''SF''', '''ZF''', '''AF''', and '''PF''' flags are undefined.

@@ Line 3: / Line 3: @@
 Performs an unsigned multiplication of two operands.
-Multiplies the operand by the data register. Placing the high value in the data register and the low value in the accumulator register.
+Multiplies the operand by the accumulator register. Placing the high value in the data register and the low value in the accumulator register.
 {| class="gallery" style="background-color:#f4f4f4"

← Older revision		Revision as of 16:50, 14 March 2017
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	'''command''' mul ''operand''		'''command''' mul ''operand''
		+
		+	Performs an unsigned multiplication of two operands.

	Multiplies the operand by the data register. Placing the high value in the data register and the low value in the accumulator register.		Multiplies the operand by the data register. Placing the high value in the data register and the low value in the accumulator register.