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ARMARMIP5ARM10970ARM

ARMPDA

ARMARMRISC 12load/store34ARM1 2 3Load/Store 4

ARM

ARM

ARM6

ARMexception

ARM311R0~R72R8~R14 R13ARM R143PC R15CPSR SPSR

ARM

ARM

ARMARM1 234PSR5load/Store678

ARM

ARM 1 2PC

ARM32MB 1B 2BL 3BLX 4BX

ARM1 MOV2 ADDSUBAND 3 TST

Example ADD RdRxRxLRL #n RdRxRx2*n

ARM1323226464

Example MUL R0,R1,R2 ;R0=R1*R2MULS R0,R1,R2 ;R0R1*R2 ,CPSRNZ

ARMCPSRTThumbBX

1MRS 2MSR

ExampleMRS R0CPSR CPSRBIC R0R00x1F ORR R0R00x13 MSR CPSR_C, R0

ARMLoad/Store1load2store 3LDM 4STM

ExampleLDR R0[R1,#4] ;R14R0STR R0 [R1,#0x4] ;R0R10x4)

ARM1SWI 2BKPT SWISWIBKPT

ARM1SWP 2SWPB SWP ,,[]

ExampleSWP R1R2[R3] R3R1 R2R3SWP R1R1[R2]R1R2

ARMARM

1CDP 2LDC3STC4MCR ARM5MRCARM

ARM

ARMSymbol definition)(Data definition)(Assembly controlFrame descriptionReporting

ARM1GBLAGBLLGBLS2LCLALCLLLCLS 3SETASETLSETS4RLIST 5CN 6CP7DNSN VFP8FN FPA

ARM1LTORG2MAP ^3FIELD #4SPACE0 5DCD &6DATA7DCDBDCFDDCFSDCIDCQDCW

ARM1IFELSE ENDIF2WHILEWEND3MACROMEND4MEXIT

Example count SETA 1 count1WHILE count

ARM1ASSERT2INFO3OPT4TTL5SUBTExample INFO 0Version 1.0 IF endofdata

ARM 1ALIGN2AREA3CODE16CODE32ThumbARM4ENTRY5EXPORTGLOBAL6GETINCLUDEExample AREA ExampleCODEREADONLY EXPORT DoAddDoAdd ADD R0R0R1

ARMARM1ADRPC2ADRLPC ADR3LDR324NOP

ARM

ARMARM31ARMPC4ThumbPC22BBLBXBLX3

ARM

ARM

ARMARM12CPSR3Ir_mode4PCExampleIRQR14_irq=address of next instruction to be executed + 4 SPSR_irq=CPSR CPSR[4:0]=0b10010 IRQ CPSR[5]=0 ARM CPSR[7]=1 IRQ if high vectors configured then pc=0xFFFF0018 else pc=0x00000018

ARM1SPSR_modeCPSR2lr_modePC34PC

ARM10x0ROMLDRPC20x0RAMPCROMRAMExampleMOV R8#0ADR R9, Vector_Init_BlockLDMIA R9!,{R0-R7} ;STMIA R8!,{R0-R7} LDMIA R9!,{R0-R7} ;STMIA R8!,{R0-R7}

ARMC 12384258060xea00 0000

ARMExampleroutinevectorUnsigned Install_Handler (unsigned routine,unsigned *vector)/*vector*//*routine*//**/{ unsigned vec ,oldvec;vec=((routine-(unsigned)vector-0x08)>>2);If (vec & 0xff000000){ printf( Installation of Handler failed) exit1}vec=0xea000000 | vec;oldvec = *vector;*vector = vecReturn ( oldvec);}CUnsigned *irqvec = (unsigned *)0x18Install_Handler ((unsigned) IRQHandler, irqvec);

ARM123840xe59ff0005

ARMExample loctionvector unsigned Install_handler (Unsigned location, unsigned *vector)/*vectorLDR pc [pc#offset] *//*location*//**/{ unsigned vec, oldvec;Vec = ((unsigned)location (unsigned)vector-0x8) | 0xe59ff000;Oldvec= *vector*vector=vec;Return (oldvec);}CUnsigned *irqvec = (unsigned *)0x18Install_Handler ((unsigned) IRQHandler, irqvec);

ARMFIQIRQ1ARMFIQIRQCPU2FIQ0x1c,FIQ0x1c3FIQ5FIQ5FIQ

ARM

ARMARMregionoutput sectioninput section1234

0RORWZI

ARM

1

2

1.1

1.2

1.3

2.1

1.1.1

1.1.2

1.2.1

1.3.1

1.3.2

2.1.1

2.1.2

2.1.3

ARMARM1 2

RWRO

RWRO

ROM

RAM

ROM

0x0

0x4000000

Vectors

RW

ZI

RWRO

0x4000000

0x80000

0x60000

0x20000

0x0

Flash

SDRAM

ARMARM1 2

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