Question

I want an ARM7 Assembly code that reverses a string stored in the memory. Define the input string using DC directive with label “input”. The result should be stored in the same memory location. And I want the solution steps in a pseudo-code form.

if you could help please =)) !

Answer 1

you mean the MSB become LSB and vice versa

Answer 2

declare variables input and rotate

take the input string into the input variable

now copy it to the rotate variable

now rotate the rotate variable to the left 7 time if it is 8 bit variable or rotate it to the left 9 time if it is 10 bit variable

now copy this rotated value to input variable,

all the string is reversed

Answer 3

sorry i didn't get your explanation :/

Answer 4

what you didnt get??

Answer 5

"now rotate the rotate variable to the left 7 time if it is 8 bit variable or rotate it to the left 9 time if it is 10 bit variable"
this point