ARM - data processing - comparison

Index : Data Processing


Ref: https://embedded2016.hackpad.com/ARM-Architecture-z5hdXADIEm2

• Comparison operations:

只設定在CPSR的 condition code bits(N, Z, C and V)

• CMP : compare

• CMN : compare negated

• TST : (bit) test

• TEQ : test equal

• CMP    r1, r2        ; set CC on r1 - r2

• CMN    r1, r2        ; set CC on r1 + r2

• TST    r1, r2        ; set CC on r1 and r2

• TEQ    r1, r2        ; set CC on r1 xor r2

• 這裡的CC代表CPSR的 condition code bits
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