ARM指令机器码
ARM采用的是32位架构 ARM指令集(32-bit) Thumb指令集(16-bit) ARM instruction set encoding 指令的机器码(如指令 moveq r0,r1 机器码 0x01A00001) 0000(EQ) Z = 1 Equal 相等 0001(NE) Z = 0 Not Equal 不相等 0010(CS/HS) C = 1 Carry Set 有进位,无符号数大于等于 0011(CC/LO) C = 0 Carry Clear 无进位,无符号数小于 0100(MI) N = 1 Minus, negative 减,负数 0101(PL) N = 0 Plus, porsitive or zero 加,正数或零 0110(VS) V = 1 Overflow Set 溢出 0111(VC) V = 0 Overfow Clear 无溢出 1000(HI) C == 1 and Z == 0 Unsigned Higher 无符号数大于 1001(LS) C == 0 or Z == 1 Unsigned lower or same 无符号数小于等于 1010(GE) N == V Signed greater than or same 1011(LT) N != V Signed Less Than 有符号数小于 1100(GT) Z = 0