On Fri, Sep 10, 2021 at 3:47 PM Jose E. Marchesi via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > > Hi Richard. > > > On Thu, 9 Sep 2021, Kees Cook wrote: > > > >> On Thu, Sep 09, 2021 at 10:49:11PM +0000, Qing Zhao wrote: > >> > Hi, FYI > >> > > >> > I just committed the following patch to gcc upstream: > >> > > >> > > >> > https://gcc.gnu.org/pipermail/gcc-cvs/2021-September/353195.html > >> > >> Hurray! Thank you so much for working on this, and thanks also to the > >> reviewers and everyone else poking at it. > >> > >> I will go update my Linux Plumbers slides to say "supported" instead of > >> "proposed". :) > > > > Can you two work on wording to add to gcc-12/changes.html for this > > feature? I think it deserves a release note. Likewise the CTF/BTF > > support btw. > > What about something like this for the BPF, CTF and BTF changes..
Looks good to me! Thanks, Richard. > commit 3826495d1a2c265954d5da13ca71925eea390060 (HEAD -> master) > Author: Jose E. Marchesi <jose.march...@oracle.com> > Date: Fri Sep 10 15:44:30 2021 +0200 > > gcc-12/changes.html: BPF, CTF and BTF update > > * htdocs/gcc-12/changes.html (BPF): Item about the CO-RE support. > (Debugging formats): New section with items about the support for > CTF and BTF. > > diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html > index 946faa49..936af979 100644 > --- a/htdocs/gcc-12/changes.html > +++ b/htdocs/gcc-12/changes.html > @@ -143,6 +143,15 @@ a work-in-progress.</p> > > <!-- <h3 id="avr">AVR</h3> --> > > +<h3 id="bpf">BPF</h3> > +<ul> > + <li>Support for CO-RE (compile-once, run-everywhere) has been added > + to the BPF backend. CO-RE allows to compile portable BPF > + programs that are able to run among different versions of the > + Linux kernel. > + </li> > +</ul> > + > <!-- <h3 id="x86">IA-32/x86-64</h3> --> > > <!-- <h3 id="mips">MIPS</h3> --> > @@ -210,7 +219,25 @@ a work-in-progress.</p> > <!-- <h2 id="plugins">Improvements for plugin authors</h2> --> > > <!-- .................................................................. --> > -<!-- <h2>Other significant improvements</h2> --> > +<h2>Other significant improvements</h2> > + > +<h3 id="debug">Debugging formats</h3> > + > +<ul> > + <li>GCC can now generate debugging information > + in <a href="https://ctfstd.org";>CTF</a>, a lightweight debugging > + format that provides information about C types and the > + association between functions and data symbols and types. This > + format is designed to be embedded in ELF files and to be very > + compact and simple. A new command-line > + option <code>-gctf</code> enables the generation of CTF. > + </li> > + <li>GCC can now generate debugging information in BTF. This is a > + debugging format mainly used in BPF programs and the Linux > + kernel. The compiler can generate BTF for any target, when > + enabled with the command-line option <code>-gbtf</code> > + </li> > +</ul> > > > <!-- .................................................................. -->
