> 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!
Installed. Thanks! > 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> >> >> >> <!-- .................................................................. -->
