MCB2100 and assembly program

Shivaram,
be careful: there are very serious limitations on what inline assembly can do with the RealView compiler. refer to your assembler documentation for further information. what you can and should do is use the __asm declaration before a function itself. this makes the function an embedded assembly function, that is 100% assembly without any limitation almost and still called like a normal C function.
you can also experiment with pure assembly modules.
but why are you so obsessed with assembly rather than writing in C? you can force thumb opcodes using the right pragma:

#pragma thumb

(I think).
if I were you - I'd write it all in C. if you need something "exotic" - like saving the context of the processor - assembly is indeed what you'd want. keep it simple, efficient and functional.

Shivaram,
be careful: there are very serious limitations on what inline assembly can do with the RealView compiler. refer to your assembler documentation for further information. what you can and should do is use the __asm declaration before a function itself. this makes the function an embedded assembly function, that is 100% assembly without any limitation almost and still called like a normal C function.
you can also experiment with pure assembly modules.
but why are you so obsessed with assembly rather than writing in C? you can force thumb opcodes using the right pragma:

#pragma thumb

(I think).
if I were you - I'd write it all in C. if you need something "exotic" - like saving the context of the processor - assembly is indeed what you'd want. keep it simple, efficient and functional.