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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gen	Switch libc from using _sig{procmask,action,suspend} symbols, which	2015-08-29 14:25:01 +00:00
stdlib	Add section .note.GNU-stack for assembly files used by 386 and amd64.	2011-01-07 16:08:40 +00:00
string	Replace the WEAK_ALIAS() alias with the WEAK_REFERENCE() alias. Use it and	2013-11-21 22:31:18 +00:00
sys	Copy the fencing of the algorithm to do lock-less update and reading	2015-08-04 12:33:51 +00:00
_fpmath.h	Add an alternative view of the bits in an 80-bit long double (64+16	2008-01-17 16:39:07 +00:00
arith.h	Add a comment describing why it's important for the values in this	2003-05-08 13:50:44 +00:00
gd_qnan.h	Arrange so that the NaN returned by strtod("nan", NULL) is the same as	2007-12-16 21:15:09 +00:00
Makefile.inc	Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP}	2014-03-04 02:19:39 +00:00
Symbol.map	libc/i386: Do not export .cerror.	2012-09-05 21:41:05 +00:00
SYS.h	Replace the WEAK_ALIAS() alias with the WEAK_REFERENCE() alias. Use it and	2013-11-21 22:31:18 +00:00