Please note: We are aware of an issue affecting replies on the Arm Community forums, which may not be loading as expected.

We apologize for any inconvenience and appreciate your patience while we investigate and work to resolve the issue.

Thank you for your understanding.

  • State Not Answered
  • Locked Locked
  • Replies 4 replies
  • Subscribers 22 subscribers
  • Views 1334 views
  • Users 0 members are here
Options
Related
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

assembler order

assembli assembli

What means this line in assembler?

__user_libspace:
0x10000AE0  ES813Bf3 ADD   R3, R1, #0x0001CC00

instruction at the addr 0x10000AE0 called a ADD order to add value in R1 to R3 - but what about the #0x0001CC00?

Parents
  • 0 in reply to assembli assembli

    R2 is no register, it is a address in the RAM, isn't it?

    No, it is not. The ARM architecture is a load/store (also known as RISC) architecture, which means that data processing instructions cannot work with memory contents, but with registers and constants only.

    R2, in this case, is a flexible second operand. What exactly that means is also explained in the ARM assembly docs.

Reply
  • 0 in reply to assembli assembli

    R2 is no register, it is a address in the RAM, isn't it?

    No, it is not. The ARM architecture is a load/store (also known as RISC) architecture, which means that data processing instructions cannot work with memory contents, but with registers and constants only.

    R2, in this case, is a flexible second operand. What exactly that means is also explained in the ARM assembly docs.

Children
No data