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* Make sure attributes are applied to function declarations before they'reguenther2016-09-061-2/+6
| | | | | | | | used or defined, as clang isn't as forgiving as gcc. Also, declare __flt_rounds() so that libc can build it despire clang providing its own <float.h> ok stefan@ kettenis@
* Use a Thread Information Block in both single and multi-threaded programs.guenther2016-05-071-4/+4
| | | | | | | | | | | | | | | | | This stores errno, the cancelation flags, and related bits for each thread and is allocated by ld.so or libc.a. This is an ABI break from 5.9-stable! Make libpthread dlopen'able by moving the cancelation wrappers into libc and doing locking and fork/errno handling via callbacks that libpthread registers when it first initializes. 'errno' *must* be declared via <errno.h> now! Clean up libpthread's symbol exports like libc. On powerpc, offset the TIB/TCB/TLS data from the register per the ELF spec. Testing by various, particularly sthen@ and patrick@ ok kettenis@
* Don't wrap initialized variables: binutils appears to be mishandling themguenther2015-09-191-1/+3
| | | | | | on arm and m88k problems with optind observed by jsg@
* Add PROTO_WRAP() for (almost) all the syscalls that libpthread doesn'tguenther2015-09-111-3/+3
| | | | | | override so that internal calls go direct ok deraadt@
* Pull in namespace.h when building all .c files using gcc's -include option,guenther2015-09-101-2/+1
| | | | | | | | so that we can provide asm labels for the memcpy/memset/__stack_smash_handler calls that it generates ab initio. Eliminate direct #includes of it. Make sure it's a dependency of all objects (unnecessary for asm, but close enough). ok deraadt@
* Fix aliasing of sys_errlist, sys_nerr, sys_siglist, and sys_signameguenther2015-09-061-3/+10
| | | | | | to eliminate duplicate copies of the tables and get direct access internally ok kettenis@ deraadt@
* Add framework for resolving (pun intended) libc namespace issues, usingguenther2015-08-311-0/+109
wrapper .h files and asm labels to let internal calls resolve directly and not be overridable or use the PLT. Then, apply that framework to most of the functions in stdio.h, string.h, err.h, and wchar.h. Delete the should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here. tests clean on i386, amd64, sparc64, powerpc, and mips64 naming feedback from kettenis@ and millert@ ok kettenis@
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