> -----Original Message----- > From: H.J. Lu [mailto:hjl.to...@gmail.com] > Sent: Monday, March 26, 2018 5:59 PM > To: Tsimbalist, Igor V <igor.v.tsimbal...@intel.com> > Cc: gcc-patches@gcc.gnu.org; Uros Bizjak <ubiz...@gmail.com> > Subject: Re: [PATCH] i386: Insert ENDBR to trampoline for -fcf- > protection=branch -mibt > > On Mon, Mar 26, 2018 at 8:23 AM, Tsimbalist, Igor V > <igor.v.tsimbal...@intel.com> wrote: > >> -----Original Message----- > >> From: Lu, Hongjiu > >> Sent: Sunday, March 25, 2018 12:50 AM > >> To: gcc-patches@gcc.gnu.org; Uros Bizjak <ubiz...@gmail.com>; > Tsimbalist, > >> Igor V <igor.v.tsimbal...@intel.com> > >> Subject: [PATCH] i386: Insert ENDBR to trampoline for -fcf- > >> protection=branch -mibt > >> > >> When -fcf-protection=branch -mibt are used, we need to insert ENDBR > >> to trampoline. TRAMPOLINE_SIZE is creased by 4 bytes to accommodate > >> 4-byte ENDBR instruction. > >> > >> OK for trunk? > > > > Regarding the test. Is it possible to check what is generated in a > trampoline? In particular, that endbr is generated. > > > > I think run-time test is sufficient.
Ok then. > -- > H.J.
