cotexm0汇编指令.docVIP

表7-22 Cortex-M0指令和它们的周期数 操 作 描 述 汇编指令 周 期 MOVE 8-bit immediate MOVS Rd,#imm 1 Lo to Lo MOVS Rd,Rm 1 Any to Any MOV Rd,Rm 1 Any to PC MOV PC,Rm 3 Add 3-bit immediate ADDS Rd,Rn,#imm 1 All registers Lo ADDS Rd,Rn,Rm 1 续表 操 作 描 述 汇编指令 周 期 Any to Any ADD Rd,Rd,Rm 1 Any to PC ADD PC,PC,Rm 3 8-bit immediate ADDS Rd,Rd,#imm 1 With carry ADCS Rd,Rd,Rm 1 Immediate to SP ADD SP,SP,#imm 1 Form address from SP ADD Rd,SP ,#imm 1 Form address from PC ADR Rd,label 1 Subtract Lo to Lo SUBS Rd,Rn,Rm 1 3-bit immediate SUBS Rd,Rn,#imm 1 8-bit immediate SUBS Rd,Rd,#imm 1 With carry SBCS Rd,Rd,Rm 1 Immediate from SP SUB SP,SP,#imm 1 Negate RSBS Rd,Rn,#0 1 Multiply Multiply MULS Rd,Rm,Rd 1或32 Compare Compare CMP Rn,Rm 1 Negative CMP Rn,Rm 1 Immediate CMP Rn,#imm 1 Logical AND ANDS Rd, Rd, Rm 1 Exclusive OR EORS Rd, Rd, Rm 1 OR ORRS Rd, Rd, Rm 1 Bit clear BICS Rd, Rd, Rm 1 Move NOT MVNS Rd, Rm 1 AND test TST Rn, Rm 1 Shift Logical shift left by immediate LSLS Rd, Rm, #shift 1 Logical shift left by register LSLS Rd, Rd, Rs 1 Logical shift right by immediate LSRS Rd, Rm, #shift 1 Logical shift right by register LSRS Rd, Rd, Rs 1 Arithmetic shift right ASRS Rd, Rm, #shift 1 Arithmetic shift right by register ASRS Rd, Rd, Rs 1 Rotate Rotate right by register RORS Rd, Rd, Rs 1 Load Word, immediate offset LDR Rd, [Rn, #imm] 2 Halfword, immediate offset LDRH Rd, [Rn, #imm] 2 Byte, immediate offset LDRB Rd, [Rn, #imm] 2 Word, register offset LDR Rd, [Rn, Rm] 2 续表 操 作 描 述 汇编指令 周 期 Halfword, register offset LDRH Rd, [Rn, Rm] 2 Signed halfword, register offset LDRSH Rd, [Rn, Rm] 2 Byte, register offset LDRB Rd, [Rn, Rm] 2 Sig