unsigned short itembitcount;
setup_action.sa_handler = action;
+ /* The sa_restorer is not used. Reason:
+ * The kernel uses its own restorer anyway by pretending we gave one on
+ our side (no, really).
+ glibc still has a custom restorer because they want to be able to
+ backtrace. gdb has a second part that detects a specific instruction
+ sequence and then fixes up the backtrace. Since we don't use that
+ specific instruction sequence and also the non-siginfo restorer
+ is complicated (pops foreign item off the stack--so needs inline
+ assembly) and we don't support great debuggability in other places,
+ I've decided to take the easy way out for now. */
/*setup_action.sa_restorer = _restorer_for_siginfo;*/
bitindex = signum - 1;
itembitcount = 8 * sizeof(setup_action.sa_mask.items[0]);