https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112980
--- Comment #9 from Giuliano Belinassi <giuliano.belinassi at gmail dot com> --- Hello, Kewen. (In reply to Kewen Lin from comment #8) > Hi @Michael, @Martin, could you help to confirm/clarify what triggers you to > be interested in this feature, is it for some user space usage or not? Yes, this is for userspace livepatching. Assume the following example: https://godbolt.org/z/b9M8nMbo1 As one can see, the sequence of 14 nops are generated after the global function entry point. In such way we can't use the this space to place a trampoline to the new function. We need this sequence of nops to be placed *before* the global function entry point. Thanks, Giuliano.
