IABSD.fr/src/libexec/ld.so/Symbols.map

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• Author : guenther
  Date : 2016-05-07 19:05:21
  Hash : fe38b55c
  Message : Use a Thread Information Block in both single and multi-threaded programs. 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@

• libexec/ld.so/Symbols.map

• {
  	global:
  		/* actual exports */
  		dl_iterate_phdr;
  		dladdr;
  		dlclose;
  		dlctl;
  		dlerror;
  		dlopen;
  		dlsym;
  		environ;
  		__progname;
  
  		/* alias in reserved namespace for libpthread to use */
  		_dlctl;
  
  		/* TLS related bits */
  		_dl_allocate_tib;
  		_dl_free_tib;
  
  		/* looked up by gdb */
  		_dl_bind;
  		_dl_debug_state;
  
  	local:
  		*;
  };