ARM实验汇编代码.

AREA Example1,CODE,READONLY ENTRY CODE32START MOV R0,#15MOV R1,#8ADDS R0,R0,R1B STARTENDTest2.sX EQU 11Y EQU 8BIT23 EQU (1<<23AREA Example3,CODE,READONLY ENTRY CODE32STARTYMOV R0,#XMOR R1,#YADD R3,R0,R1MOV R8,R3MVN R0,#0XA0000007SUB R5,R0,R8,LSL #3MOV R0,#YADD R0,R0,R0,LSL #2MOV R0,R0,LSR #1MOV R1,#XMOV R1,R1,LSL #1CMP R0,R1LDRHI R2,=0XFFFF0000ANDHI R5,R5,R2ORRLS R5,R5,#0X000000FFTST R5,#BIT32BICNE R5,R5,#0X00000040B STARTEND//*******Test3.s******************** X EQU 11Y EQU 8BIT23 EQU (1<<23AREA Example3,CODE,READONLY ENTRY CODE32STARTMOV R0,#XMOV R1,#YADD R3,R0,R1MOV R8,R3MVN R0,#0XA0000007SUB R5,R0,R8,LSL #3MOV R0,#YADD R0,R0,R0,LSL #2MOV R0,R0,LSR #1MOV R1,#XMOV R1,R1,LSL #1CMP R0,R1LDRHI R2,=0XFFFF0000ANDHI R5,R5,R2ORRLS R5,R5,#0X000000FFTST R5,#BIT23BICNE R5,R5,#0X00000040B STARTEND//*************Test4.s*************** ;******************************** ****** ;Name :test4.s;Function :Caculate X^n;Entrance parametre :;Out parametre :R0 Result;Source occupation :R0,R1;Explanation :;**************************************X EQU 9n EQU 8AREA Example4,CODE,READONLYENTRYCODE32START LDR SP,=0X40D03F0DLDR R0,=XLDR R1,=nBL POWHALT B HALT;**************************************;Name :POW;Function :zhengshu chengfang;Entrance parametre :;Out parametre :;Source occupation :R0,R1;Explanation :This code doesnt care the number overflow ;**************************************POWSTMFD SP!,{R1-R12,LR}MOVS R2,R1MOVEQ R0,#1BEQ POW_ENDCMP R2,#1BEQ POW_ENDMOV R1,R0SUB R2,R2,#1POW_L1 BL DO_MULSUBS R2,R2,#1BNE POW_L1POW_END LDMFD SP!,{R1-R12,PC};************************************** ;Name :DO_MUL;Function :MULTIPLE OF 32BIT DATA;Entrance parametre :R0 CHENGSHU; R1 BEICHENGSU;Out parametre :R0 Result;Source occupation :R0,R1;Explanation :;************************************** DO_MUL MUL R0,R1,R0MOV PC,LREND//***********Test5.s***************;************************************** ;Name :test5.s;Function :Caculate 1+2+3+…+N;Entrance parametre :;Out parametre :;Source occupation :;Explanation :N>=0, if N=0 reult=0,if N=1 resualt=1;**************************************N EQU 100AREA Example5,CODE,READONLYENTRYCODE32ARM_CODE LDR SP,=0X40003F00 ;There should be no space before ARM_CODE ADR R0,THUMB_CODE+1BX R0LTORGCODE16THUMB_CODELDR R0,=NBL SUM_NB THUMB_CODE;**************************************;Name :SUM_N;Function :Caculate 1+2+3+…+N;Entrance Parametre :R0 N;Out Parametre :R0 Result;Source Occupation :R0;Explanation :N>=0, if N=0 result=0,if N=1 resualt=1; if any overflow result=0;;************************************** SUM_N PUSH {R1-R7,LR}MOVS R2,R0BEQ SUM_ENDCMP R2,#1BEQ SUM_ENDMOV R1,#1MOV R0,#0SUM_L1 ADD R0,R1BCS SUM_ERRCMP R1,R2BHS SUM_ENDADD R1,#1B SUM_L1SUM_ERR MOV R0,#0SUM_END POP {R1-R7,PC}END//*************Test6.s******************** ;*************************** *********** ;Name :tes6.s;Function :show if for while switch ;Entrance Parametre :;Out Parametre :;Source Occupation :;Explanation :;************************************** AREAExample6,CODE,READONLY ENTRYCODE32START ;if(x>yz=100;;else z=50MOV R0,#76MOV R1,#243CMP R0,R1MOVHI R2,#100MOVLS R2,#50;for(i=0;i<10;i++FOR_L1 ;{ ; x++; ;} MOV R0,#0 MOV R2,#0 CMP R2,#10 BHS FOR_END ADD R0,R0,#1 ADD R2,R2,#1 B FOR_L1 NOP ;while(x<=y ;{ ; x*=2; ;} MOV R0,#1 MOV R1,#20 B WHILE_L2 FOR_END WHILE_L1 WHILE_L2 MOV R0,R0,LSL #1 CMP R0,R1 BLS WHILE_L1 WHILE_END NOP ;do ;{x--;} ;while(x>0 MOV R0,#5 DOWHILE_L1 ADD R0,R0,#-1 DOWHILE_L2 MOVS R0,R0 BNE DOWHILE_L1 DOWHILE_END NOP ;switch(key&0x0f ;{case 0: ; case 2: ; case 3:x=key+y; break; ; case 5:x=key-y; break; ; case 7:x=key*y; break;;default:x=168; break; ;} MOV R1,#3 MOV R2,#2 SWITCH AND R2,R2,#0X0F CASE_0 CMP R2,#0 CASE_2 CMPNE R2,#2 CASE_3 CMPNE R2,#3 BNE CASE_5 ADD R0,R2,R1 B SWITCH_END CASE_5 CMP R2,#5 BNE CASE_7 SUB R0,R2,R1 B SWITCH_END CASE_7 CMP R2,#7 BNE DEFAULT MUL R0,R2,R1 BSWITCH_END DEFAULT MOV R0,#168 SWITCH_END NOP HALT B HALT END。