https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66631
--- Comment #5 from Stas Sergeev <stsp at users dot sourceforge.net> --- (In reply to Andrew Pinski from comment #4) > (In reply to Stas Sergeev from comment #3) > > The signal handler needs to do the following things: > > 1. Restore segment registers (init_handler() func) > > Why are you doing this, that is the question I am trying to understand here. > What signal handler is happening? Ah, OK. This is a jit compiler. It uses segment registers at will, and it uses a memory protection too, so the signal is SIGSEGV. > Because you can't do this under Linux at > all. What exactly do you mean? > I am also trying to understand if you are writing a kernel/userspace why you > can't write this part in pure assembly function instead of using GCC here to > do this work. How am I supposed to access TLS in asm? init_handler() itself is mostly in asm though, yes. But the main sighandler is a huge convoluted func.
