Actions
Forum Thread Details
  • State Not Answered
  • Replies 2 replies
  • Subscribers 175 subscribers
  • Views 252 views
  • Users 0 members are here
Related

QEMU - Deep Dive

Former Member

I have written a blog post detailing the QEMU environment available from Xilinx.

http://zynqgeek.blogspot.com/2012/10/qemu-deep-dive.html

Enjoy!

  • 0

    Hi zynqgeek,

    This is really very well done, thanks for putting this together!

    -Kevin

  • 0

    Two questions from the blog:

    (1) QEMU Xilinx ARM emulate NEON Instruction ?
    (2) QEMU Xilinx ARM emulate double precision FPU ?

    If you dive into the source code of qemu, specifically within the qemu git repo here:

    git://git.xilinx.com/qemu-xarm.git

    within the target-arm folder there is a file called translate.c.  Within this file there is a function called disas_neon_data_insn().  This handles the NEON instruction decoding.

    As for the double precision, I see no reason why it would not, as the ARM emulation should be operationally equivalent.

    I have a post about linpack performance on the Zedboard, I'll see if I can write a quick follow up about the performance in qemu - that will confirm the double precision float using the NEON core.