wireguard-openbsd/lib/libc/dlfcn, branch jd/queueboosts

Complete the ld.so boot cleanup: move most libc initialization from

2019-06-02T01:03:01Z

_csu_finish() to _libc_preinit(), which is an .init_array function in shared libc (and mark it INITFIRST) or a .preinit_array function in static libc, grabbing the _dl_cb callback there from ld.so. Then in _csu_finish(), invoke the dl_clean_boot() callback to free ld.so's startup bits before main() gets control. Other cleanups this permits: - move various startup structures into .data.rel.ro - the dl* stubs in libc can be strong and call the callbacks provided via _dl_cb - no longer need to conditionalize dlctl() calls on presence of _DYNAMIC original concept and full diff ok kettenis@ ok deraadt@

Redo the calculation of the alignment and placement of static TLS data to

2017-12-01T23:30:05Z

correctly take into account the segment p_align. Previously, anything with a size belong the natural alignment or with alignment larger than the natural one would either not be intialized correctly, be misaligned, or result in the TIB being misaligned. Problems reported by Charles Collicutt (charles (at) collicutt.co.uk) ok kettenis@

Implement dl_iterate_phdr() for static PIE executables using info extracted

2016-09-06T18:49:34Z

from the aux vector. ok patrick@ kettenis@

Use a Thread Information Block in both single and multi-threaded programs.

2016-05-07T19:05:21Z

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 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@

The asm in the MD_DISABLE_KBIND macro was too fragile and broke alpha and hppa.

2016-03-21T00:41:13Z

So instead, do the kbind disabling with syscall(). debugging and ok deraadt@, ok kettenis@

Add $OpenBSD line

2016-03-20T03:01:57Z

Rearrange C runtime bits: now that ld.so exports environ and __progname,

2016-03-20T02:32:39Z

move their definitions and initialization in static links to libc.a Make crt0 always invoke a new func _csu_finish() in libc to process the auxv and to either register the ld.so cleanup function (in dynamic links) or initialize environ and __progname and do MC_DISABLE_KBIND (in static links). In libc, get pagesize from auxv; cache that between getpagesize() and sysconf(_SC_PAGESIZE) ok mpi@ "good time" deraadt@

delete old lint ARGSUSED comments

2015-11-01T03:00:01Z

ELF_TOOLCHAIN bye bye.

2013-07-05T21:29:51Z

dlerror() should not return const char *, as noted by landry

2013-03-24T01:37:21Z

ok guenther