75.1k views
1 vote
Suppose r0= 0x56789ABC, find the result of the following operation.

RBIT r1, r0
REV r2, r0
REV16 r3, r0
REVSH r4, r0

1 Answer

6 votes

Final answer:

The question involves ARM assembly language instructions that manipulate a 32-bit hexadecimal value, each performing different kinds of bitwise operations such as reversing bits or bytes, and sign-extension for halfword values.

Step-by-step explanation:

The question you've asked is related to ARM assembly language, specifically dealing with bitwise operations and data manipulation instructions on a 32-bit value. In ARM, RBIT reverses the bits in a word, REV reverses the bytes in a 32-bit word, REV16 treats the value as two 16-bit halfwords and reverses the bytes in each halfword, and REVSH treats the value as a 16-bit halfword, reverses the bytes, and sign-extends to 32-bits.





User Meadowstream
by
8.4k points