cmp

Compare (A32)

CMP<c> <Rn>, <Rm> {, <shift>}

Subtracts two values and updates flags (discarding result).

Details

The Compare instruction subtracts two values and updates flags (discarding result).

Pseudocode Operation

// Flags ← Rm - SRC2 (result discarded)

Example

CMP r1, r2

Encoding

Binary Layout
cond
00
0
1010
1
Rn
0000
shift
0
Rm
 
Format Data Proc
Opcode 0x01500000
Extension A32 (Base)

Operands

  • Rn
    First source / base general-purpose register
  • Rm
    Second source / offset general-purpose register