Cmp instruction example

cmp instruction in 8086 with example
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Aug 26, 2017 2 Answers. cmp arg2, arg1 performs the same operation as sub arg2, arg1 except that none of the operands are modified. The difference is not stored anywhere. However, the flags register is updated and can be used in a conditional jump, like jump-if-equal ( JE ), most often as the next instruction after the cmp . Instruction, CMP 1.1 Syntax; 1.2 Function; 1.3 Example; 1.4 Technical CMP permits you to compare two values, automatically updating the flags to reflect the The cmp instruction compares the contents of general-purpose register (GPR) Examples. The following code compares the contents of GPR 4 and GPR 6 as The instruction pointer (EIP) register contains the address of the next Note that the GAS/AT&T syntax can be rather confusing, as for example cmp $0, %rax The compare ( cmp ) instruction compares two numeric values. Syntax; Description; Examples. Syntax. Table 5–24 Syntax for Compare (cmp) Instruction Description. The cmp instruction is used to perform comparison. It's identical to the sub instruction except it does not affect operands. Syntax. cmp destination, source. Example. cmp [ebp+arg_0], 1 ; compare 1 with [ebp+arg_0] jnz short loc_402B1D ; Jump short if not zero (ZF=0) Comments. View the discussion thread. CMP Instruction. The CMP instruction compares two operands. It is generally used in conditional execution. This instruction basically subtracts one operand from the other for comparing whether the operands are equal or not. Operation These instructions compare the value in a register with Operand2. The CMP instruction subtracts the value of Operand2 from the value in Rn. This is the same as a SUBS instruction, except that the result is Incorrect example. May 30, 2016Opcode, Mnemonic, Description. 3C ib, CMP AL, imm8, Compare imm8 with AL. 3D iw, CMP AX, imm16, Compare imm16 with AX. 3D id, CMP EAX, imm32