wireguard-openbsd/lib/csu/arm, branch jd/simplify-queueingWireGuard implementation for the OpenBSD kernelhttps://git.zx2c4.com/wireguard-openbsd/atom/lib/csu/arm?h=jd%2Fsimplify-queueing2020-03-13T09:31:24ZAnthony Steinhauser reports that 32-bit arm cpus have the same speculation2020-03-13T09:31:24Zderaadtderaadt@openbsd.org2020-03-13T09:31:24Zurn:sha1:f74a2b77455090a00a6234c40c5f02aa52986a5b
problems as 64-bit models. To resolve the syscall speculation, as a first
step "nop; nop" was added after all occurances of the syscall ("swi 0")
instruction. Then the kernel was changed to jump over the 2 extra instructions.
In this final step, those pair of nops are converted into the speculation-blocking
sequence ("dsb nsh; isb").
Don't try to build through these multiple steps, use a snapshot instead.
Packages matching the new ABI will be out in a while...
ok kettenis
Anthony Steinhauser reports that 32-bit arm cpus have the same speculation2020-03-11T13:09:29Zderaadtderaadt@openbsd.org2020-03-11T13:09:29Zurn:sha1:afaa629c2449cf45f3998658bc9ce86c63099379
problems as 64-bit models. For the syscall instruction issue, add nop;nop
after swi 0, in preparation for jumping over a speculation barrier here later.
_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@
Use a long branch (using movw/movt) to implement MD_SECT_CALL_FUNC.2017-02-26T15:20:58Zketteniskettenis@openbsd.org2017-02-26T15:20:58Zurn:sha1:08c612f178f469b0f8f2b00e2ab61610e3556188
Necessary (but perhaps not suffcient) to build large binaries on arm.
ok guenther@
Declare the symbols that label the .ctors, .dtors, .eh_frame, and .jcr2017-01-21T00:45:13Zguentherguenther@openbsd.org2017-01-21T00:45:13Zurn:sha1:b3fe29f4687edf2be8c3fc3433d38bd40593a33b
sections as extern hidden arrays of indefinite size, so that the compiler
(well, clang) doesn't believe it knows the exact contents and thus optimize
things into infinite loops. Actually set the symbols to be in the sections
and insert the leading and trailing values via __asm().
Problem pointed out by patrick@
testing and ok kettenis@
Simplify code that sets up a stack frame for running .init code to be more2016-10-03T22:13:30Zketteniskettenis@openbsd.org2016-10-03T22:13:30Zurn:sha1:306c523a48caa279c9d206c6b255f25839cac41b
AEABI-like.
ok tom@, jsg@
Implement self-relocation for -static -pie on arm. Also removes some2016-09-08T18:56:58Zketteniskettenis@openbsd.org2016-09-08T18:56:58Zurn:sha1:dfd75ee2a3128c0a7d2b0f51c6f5b6b1aefd869c
unecessary code from the normal startup code and do some general cleanup to
make the code more readable.
ok guenther@, jsg@
Unbreak arm and m88k: COPY relocations for weak symbols that are overloaded2016-03-24T05:27:19Zguentherguenther@openbsd.org2016-03-24T05:27:19Zurn:sha1:8b713dc6c885014c3ed6a317cff92edca10f7822
with strong symbols in ld.so don't do what we need, so put definitions back
in crt0 and make ld.so update __progname like it does environ.
report and testing patrick@ jsg@
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@
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@@