Question

Task: Write an ARM Assembly Language program that copies a string (or a sequence of bytes) from one location to another. When making the copy, the program HAS to convert each lower-case character (alphabetic character) from lower case to upper case. Hint: Use the program below to start: AREA RESET, DATA, READONLY EXPORT _Vectors _Vectors DCD 0x20001000 ; stack pointer value when stack is empty DCD Reset_Handler ; reset vector ALIGN AREA MYCODE, CODE, READONLY ENTRY EXPORT Reset_Handler Reset_Handler NOP ; entry point must be an instruction DATA ; DATA is ignored anyway strings DCB "Hello world", 0 stringsCopy SPACE 11 CODE32 ADR R0, strings ADR R1, stringsCopy MOV R2, #10 ; number of characters minus 1 MOV R3, #0 copyloop LDRB R5, [R0, R3] STRB R5, [R1, R3] ADD R3, R3, #1 CMP R2, R3 BNE copyloop NOP STOP B STOP END ; end of the program

          Task: Write an ARM Assembly Language program that copies a string
(or a sequence of bytes) from one location to another. When making the
copy, the program HAS to convert each lower-case character (alphabetic
character) from lower case to upper case.
Hint: Use the program below to start:
AREA RESET, DATA, READONLY
EXPORT _Vectors
_Vectors
DCD 0x20001000 ; stack pointer value when stack is empty
DCD Reset_Handler ; reset vector
ALIGN
AREA MYCODE, CODE, READONLY
ENTRY
EXPORT Reset_Handler
Reset_Handler
NOP ; entry point must be an instruction
DATA ; DATA is ignored anyway
strings
DCB "Hello world", 0
stringsCopy
SPACE 11
CODE32
ADR R0, strings
ADR R1, stringsCopy
MOV R2, #10 ; number of characters minus 1
MOV R3, #0
copyloop
LDRB R5, [R0, R3]
STRB R5, [R1, R3]
ADD R3, R3, #1
CMP R2, R3
BNE copyloop
NOP
STOP B STOP
END ; end of the program

Task: Write an ARM Assembly Language program that copies a string
(or a sequence of bytes) from one location to another. When making the
copy, the program HAS to convert each lower-case character (alphabetic
character) from lower case to upper case.
Hint: Use the program below to start:
AREA RESET, DATA, READONLY
EXPORT Vectors
Vectors
DCD 0x20001000 ; stack pointer value when stack is empty
DCD ResetHandler ; reset vector
ALIGN
AREA MYCODE, CODE, READONLY
ENTRY
EXPORT ResetHandler
ResetHandler
NOP ; entry point must be an instruction
DATA ; DATA is ignored anyway
strings
DCB "Hello world", 0
stringsCopy
SPACE 11
CODE32
ADR R0, strings
ADR R1, stringsCopy
MOV R2, #10 ; number of characters minus 1
MOV R3, #0
copyloop
LDRB R5, [R0, R3]
STRB R5, [R1, R3]
ADD R3, R3, #1
CMP R2, R3
BNE copyloop
NOP
STOP B STOP
END ; end of the program

Added by Kaitlyn S.

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