[Bug libffi/64779] [5 Regression] libffi/src/x86/sysv.S:864: Error: junk at end of line, first unrecognized character is `@'

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64779

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 34585
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34585&action=edit
An untested patch

Try this.