• Locked Locked
  • Replies 3 replies
  • Subscribers 119 subscribers
  • Views 3584 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
Related
How was your experience today?
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

can coprocessor instruction be produced by compiler from c code

rensheng yang
Note: This was originally posted on 18th April 2013 at http://forums.arm.com

can accessing coprocessor instruction be produced by compiler from c code？

except float point instructions?

such like drain write buffer instruction?

any docs describe detail of this?
Parents
  • Note: This was originally posted on 19th April 2013 at http://forums.arm.com

    i know this feature, named register.

    i mean compiler translate c code to arm instructions. except this extension of c code added by specific compiler, can normal c code produce instructions like 'MCR'?

    etc, we write
    int a;
    int b;
    int c=a+b;

    this will translate to load and modify instructions.  or we can use hard-float to control translate to float instructions.

    how we can control coprocessor instructions produced from normall C code express?

    i think usually c code is used for moving data, so may not produce control instructions, is this right? any theory?
Reply
  • Note: This was originally posted on 19th April 2013 at http://forums.arm.com

    i know this feature, named register.

    i mean compiler translate c code to arm instructions. except this extension of c code added by specific compiler, can normal c code produce instructions like 'MCR'?

    etc, we write
    int a;
    int b;
    int c=a+b;

    this will translate to load and modify instructions.  or we can use hard-float to control translate to float instructions.

    how we can control coprocessor instructions produced from normall C code express?

    i think usually c code is used for moving data, so may not produce control instructions, is this right? any theory?
Children
No data