wireguard-openbsd/lib/csu/alpha, branch masterWireGuard implementation for the OpenBSD kernelhttps://git.zx2c4.com/wireguard-openbsd/atom/lib/csu/alpha?h=master2020-10-15T16:30:21Zcrt0 MD _dl_exit() performs syscall to SYS_exit directly, but then2020-10-15T16:30:21Zderaadtderaadt@openbsd.org2020-10-15T16:30:21Zurn:sha1:2bc3a8c076b486ad5cb1adf52ac1373fba054b0a
some of these functions were returning. That makes the +1word address
a fairly strong and easily located gadget. Put a hard-trap
instruction after the syscall. This remains a gadget for 'terminal
system' calls (such as execve), but hey that's why we have pledge w/o
"exec" throughout the tree.
Quite surprisingly, hppa's delay-slot load of SYS_exit makes it the
safest of the bunch, not that this helps anyone.
ok kettenis
use symbolic SYS_exit instead of the value 12020-10-14T22:11:18Zderaadtderaadt@openbsd.org2020-10-14T22:11:18Zurn:sha1:9c558c1181d4532fa3a04595bff127adc23ef057
ok kettenis
Make alpha less special: _dl_boot_bind() is written to complete2018-11-22T21:37:29Zguentherguenther@openbsd.org2018-11-22T21:37:29Zurn:sha1:c9db2c6cc9c28bf8ff81d191ed1dd7b77a021120
relocation of ld.so's GOT without using it, so _reloc_alpha_got()
merely made the call to _dl_boot_bind() from asm simpler...while
itself being a call that required special handling.
diff and muild baking by miod@
ok guenther@
_dl_printf is no longer referenced by RELOC_{JMPREL,DYN,GOT}; delete the stub2017-08-11T20:13:30Zguentherguenther@openbsd.org2017-08-11T20:13:30Zurn:sha1:344baaa7369214af57d570c2005bb07927710f77
ok kettenis@
MD_START is now always ___start, so expand and eliminate it2017-01-19T23:47:04Zguentherguenther@openbsd.org2017-01-19T23:47:04Zurn:sha1:48c2532cf0ac165cb15277dedb995ed44e078382
ok phessler@ deraadt@
alpha already calculates &_DYNAMIC for the _reloc_alpha_got() call, so2016-08-07T02:34:52Zguentherguenther@openbsd.org2016-08-07T02:34:52Zurn:sha1:6cd8d357b8ff1f5df4f577f20cb9ddef1b7d3555
save that and pass it to _dl_boot_bind() too
Rearrange C runtime bits: now that ld.so exports environ and __progname,2016-03-20T02:32:39Zguentherguenther@openbsd.org2016-03-20T02:32:39Zurn:sha1:5af055cd66b5450a4935ae30e5716331ca3b13d5
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@
crt0.c is already setting environ, so don't set it in MD_START_SETUP2016-03-13T18:35:02Zguentherguenther@openbsd.org2016-03-13T18:35:02Zurn:sha1:d5d4315e3de48ca679294ba47062c7faaac64e04
ok kettenis@ mpi@
In static binaries, invoke kbind() once to disable it.2015-09-01T05:40:06Zguentherguenther@openbsd.org2015-09-01T05:40:06Zurn:sha1:0a8a9c346022d9ea9d2d120f75edf8549c4915cf
With much assistance from miod@
ok deraadt@@
Static PIE support for alpha.2014-12-27T13:17:51Zketteniskettenis@openbsd.org2014-12-27T13:17:51Zurn:sha1:2f7dfe5d206aa9341f2242ffd4e9f8373d3f8f5f
This adds alpha-specific first-pass GOT relocation code to boot.h.
The assembly code is pure magic. The numeric register
names don't make it easier to understand (or compare with the
equivalent ld.so code). Unfortunately the assembler only understands
a few symbolic register names.
Renames the crt0.o entry point to __start. Our compiler was already using
__start and the linker will soon follow.
ok kurt@