Konstantin Belousov bd6060a1c6 Switch libc from using _sig{procmask,action,suspend} symbols, which ... are aliases for the syscall stubs and are plt-interposed, to the libc-private aliases of internally interposed sigprocmask() etc. Since e.g. _sigaction is not interposed by libthr, calling signal() removes thr_sighandler() from the handler slot etc. The result was breaking signal semantic and rtld locking. The added __libc_sigprocmask and other symbols are hidden, they are not exported and cannot be called through PLT. The setjmp/longjmp functions for x86 were changed to use direct calls, and since PIC_PROLOGUE only needed for functional PLT indirection on i386, it is removed as well. The PowerPC bug of calling the syscall directly in the setjmp/longjmp implementation is kept as is. Reported by: Pete French <petefrench@ingresso.co.uk> Tested by: Michiel Boland <boland37@xs4all.nl> Reviewed by: jilles (previous version) Sponsored by: The FreeBSD Foundation MFC after: 1 week		2015-08-29 14:25:01 +00:00
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_ctx_start.S	Add section .note.GNU-stack for assembly files used by 386 and amd64.	2011-01-07 16:08:40 +00:00
_set_tp.c	Include a couple of headers to ensure consistency between the prototype and	2005-09-12 19:52:42 +00:00
_setjmp.S	Replace the WEAK_ALIAS() alias with the WEAK_REFERENCE() alias. Use it and	2013-11-21 22:31:18 +00:00
fabs.S	Add section .note.GNU-stack for assembly files used by 386 and amd64.	2011-01-07 16:08:40 +00:00
flt_rounds.c	Make FLT_ROUNDS correctly reflect the dynamic rounding mode.	2004-07-19 08:17:25 +00:00
getcontextx.c	The getcontext() from the __fillcontextx() call in the	2013-05-28 04:54:16 +00:00
infinity.c
makecontext.c	Make sure the first argument to the user function is 16-byte aligned.	2004-12-05 21:22:08 +00:00
Makefile.inc	Add API for obtaining extended machine context states that cannot be	2012-01-21 18:00:28 +00:00
rfork_thread.S	libc/i386: Do not export .cerror.	2012-09-05 21:41:05 +00:00
setjmp.S	Switch libc from using _sig{procmask,action,suspend} symbols, which	2015-08-29 14:25:01 +00:00
signalcontext.c	Follow previous change in makecontext. Use %esi to store next ucp	2004-07-02 23:20:05 +00:00
sigsetjmp.S	Switch libc from using _sig{procmask,action,suspend} symbols, which	2015-08-29 14:25:01 +00:00