MIPS32指令集(多来源_格式整齐)

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1、MIPS32指令集MIPS指令可以分成以下各类：空操作no-op;寄存器寄存器传输：用得很广，包括条件传输在内；常数加载：作为数值和地址的整型立即数；算术逻辑指令；整数乘法、除法和求余数；整数乘加；加载和存储；跳转、子程序调用和分支；断点和自陷；CP0功能：CPU控制指令浮点；用户态的受限访问：rdhwr和synci注:64位版本开头以“d”表示，无符号数以“u”结尾，立即数通常以“i”结尾，字节操作以“b”结尾，双字操作以“d”结尾，字操作以“w”结尾1、空操作：nop:相当于sllzero,zero,o,ssnop:equalssllzero,zero,1.这个指令不得与其它指令同时发送，

2、这样就保证了其运行要花费至少一个时钟周期。这在简单的流水线的CPU上无关紧要，但在复杂些的实现上对于实现强制的延时很有用。2、寄存器寄存器传送：move:通常用跟$zero寄存器的or来实现，或者用addu。movf,movt,movn,movz:条件传送。3、常数加载：dla、la:用来加载程序中某些带标号的位置或者变量的地址的宏指令；dli、li:装入立即数常数，这是一个宏指令；lui:把立即数加载到寄存器高位。4、算术逻辑运算：add、addi、dadd、daddi、addu、addiu、daddu、daddiu、dsub、sub、subu:加法扌旨令和减法指令；abs，dabs：绝对值

3、；dneg、neg、negu：取相反数；and、andi、or、ori、xor、nor：逐位逻辑操作指令；drol、rol、ror：循环移位指令；sll、srl、sra：移位。5、条件设置指令：sit、slti、sltiu、situ、seq、sge、sle、sne:条件设置。6、整数乘法、除法和求余数：div、mul、rem等等。7、整数乘加（累加）mad等。8、加载和存储：lb、ld、ldl、ldr、sdl、sdr、lh、lhu、ll、sc、pref、sb等操作。9、浮点加载和存储：l.d、l.s、s.d、s.s等常用MIPS指令集及格式:0000srl000000rt0rdsham0000

4、10000sra000000rt0rdsham00001sllv000000rsrtrd000000010srlv000000rsrtrd000000011srav000000rsrtrd00000001100jr000000rs0000000000000100I-typoprsertimmediateaddi001000rsrtimmediateaddiu001001rsrtimmediateandi001100rsrtimmediateori001101rsrtimmediatexori001110rsrtimmediatelui0000001111rtimmediate0lw100011

5、rsrtimmediatesw101011rsrtimmediate更全的MIPS汇编指令ArithmeticInstructionsabsdes,srcl#desgetstheabsolutevalueofsrcl.add(u)des,src1,src2#desgetssrc1+src2.addi$t2,$t3,5#$t2=$t3+5加16位立即数addiu$t2,$t3,5#$t2=$t3+5加16位无符号立即数sub(u)des,src1,src2#desgetssrc1-src2.div(u)src1,reg2#Dividesrc1byreg2,leavingthequotientin

6、register# loandtheremainderinregisterhi.div(u)des,src1,src2#desgetssrc1/src2.muldes,src1,src2#desgetssrc1*src2.mulodes,srcl,src2#desgetssrcl*src2,withoverflow.mult(u)srcl,reg2#Multiplysrclandreg2,leavingthelow-orderword# inregisterloandthehigh-orderwordinregisterhi.rem(u)des,srcl,src2#desgetstherema

7、inderofdividingsrclbysrc2.neg(u)des,srcl#desgetsthenegativeofsrcl.anddes,srcl,src2#desgetsthebitwiseandofsrclandsrc2.nordes,srcl,src2#desgetsthebitwiselogicalnorofsrclandsrc2.notdes,srcl#desgetsthebitwiselogicalnegationofsrcl.ordes,srcl,src2#desgetsthebitwiselogicalorofsrclandsrc2.xordes,srcl,src2#d

8、esgetsthebitwiseexclusiveorofsrclandsrc2.roldes,srcl,src2#desgetstheresultofrotatingleftthecontentsofsrclbysrc2bits.rordes,srcl,src2#desgetstheresultofrotatingrightthecontentsofsrclbysrc2bits.slldes,srcl,src2#desgetssrclshiftedleftbysrc2bits.srades,srcl,src2#Rightshiftarithmetic.srldes,srcl,src2#Rig

9、htshiftlogical.sllvdes,srcl,src2#$t0=$t1$t3,shiftrightlogicalsravdes,srcl,src2#$t0=$t1$t3,shiftrightarithm.ComparisonInstructionsseqdes,src1,src2#des1ifsrc1=src2,0otherwise.snedes,src1,src2#des1ifsrc1!=src2,0otherwise.sge(u)des,src1,src2#des1ifsrc1=src2,0otherwise.sgt(u)des,src1,src2#des1ifsrc1src2,

10、0otherwise.sle(u)des,src1,src2#des1ifsrc1=src2,0otherwise.slt(u)des,src1,src2#des1ifsrc1=src2.bgt(u)src1,src2,lab#Branchtolabifsrc1src2.ble(u)src1,src2,lab#Branchtolabifsrc1=src2.blt(u)src1,src2,lab#Branchtolabifsrc1=0.bgtzsrc1,lab#Branchtolabifsrc10.blezsrc1,lab#Branchtolabifsrc1=0.bltzsrc1,lab#Bra

11、nchtolabifsrc1=0,thenputtheaddressofthenextinstruction#into$raandbranchtolab.bgtzalsrc1,lab#Ifsrc10,thenputtheaddressofthenextinstruction#into$raandbranchtolab.bltzalsrc1,lab#Ifsrc10,thenputtheaddressofthenextinstruction#into$raandbranchtolab.jlabel#Jumptolabellab.jrsrc1#Jumptolocationsrc1.jallabel#

12、Jumptolabellab,andstoretheaddressofthenextinstructionin$ra.jalrsrc1#Jumptolocationsrc1,andstoretheaddressofthenextinstructionin$ra.Load,Store,andDataMovement(reg)$Contentsofreg.const$Aconstantaddress.const(reg)$const+contentsofreg.symbol$Theaddressofsymbol.symbol+const$Theaddressofsymbol+const.symbo

13、l+const(reg)$Theaddressofsymbol+const+contentsofreg.lades,addr#Loadtheaddressofalabel.lb(u)des,addr#Loadthebyteataddrintodes.lh(u)des,addr#Loadthehalfwordataddrintodes.lides,const#Loadtheconstantconstintodes.luides,const#Loadtheconstantconstintotheupperhalfwordofdes,#andsetthelowerhalfwordofdesto0.l

14、wdes,addr#Loadthewordataddrintodes.lwldes,addrlwrdes,addrulh(u)des,addr#Loadthehalfwordstartingatthe(possiblyunaligned)addressaddrintodes.ulwdes,addr#Loadthewordstartingatthe(possiblyunaligned)addressaddrintodes.sbsrc1,addr#Storethelowerbyteofregistersrc1toaddr.shsrc1,addr#Storethelowerhalfwordofreg

15、istersrc1toaddr.swsrc1,addr#Storethewordinregistersrc1toaddr.swlsrc1,addr#Storetheupperhalfwordinsrctothe(possiblyunaligned)addressaddr.swrsrc1,addr#Storethelowerhalfwordinsrctothe(possiblyunaligned)addressaddr.ushsrc1,addr#Storethelowerhalfwordinsrctothe(possiblyunaligned)addressaddr.uswsrc1,addr#S

16、torethewordinsrctothe(possiblyunaligned)addressaddr.movedes,src1#Copythecontentsofsrc1todes.mfhides#Copythecontentsofthehiregistertodes.mflodes#Copythecontentsoftheloregistertodes.mthisrc1#Copythecontentsofthesrc1tohi.mtlosrc1#Copythecontentsofthesrc1tolo.ExceptionHandlingrfe#Returnfromexception.syscall#Makesasystemcall.See4.6.1foralistoftheSPIMsystemcalls.breakconst#Usedbythedebugger.nop#Aninstructionwhichhasnoeffect(otherthantakingacycletoexecute).