On Dec 14, 2017, "Tsimbalist, Igor V" <igor.v.tsimbal...@intel.com> wrote:
>> Regstrapping with -fcompare-debug on stage3 host and target builds on >> x86_64- and i686-linux-gnu; ok to install? > Ok from me. Thanks, I went ahead and installed it. > Am I correct the error you had was related to improper location information, Yeah, only location information. > I will try to skip NOTE insns only. You probably want to skip debug insns and notes, too. Actually, IIRC you insert these insns after var-tracking, so you probably only have to deal with notes. You don't have to, but if bindings are intended to take effect right after the call, it would probably be nice if they still did so, e.g., even if you happen to single-step out of the call and stop at the nop_endbr insn. BTW, is this the subject of a Cauldron 2017 talk in which I raised an issue about PLT entries possibly needing special opcodes to enable them to be used as call targets or somesuch? I had initially retracted my question, when it was stated that only indirect calls needed special treatment, but later I realized that in some cases PLT entries *are* used as function addresses even for functions that have their addresses taken. Please let me know if you're familiar with the issue and would like me to detail the problem. -- Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/ You must be the change you wish to see in the world. -- Gandhi Be Free! -- http://FSFLA.org/ FSF Latin America board member Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer
