wireguard-openbsd/lib/libc/arch/aarch64, branch jd/queueboosts WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/lib/libc/arch/aarch64?h=jd%2Fqueueboosts 2020-02-18T12:19:11Z Now that the kernel skips the two instructions immediately following 2020-02-18T12:19:11Z kettenis kettenis@openbsd.org 2020-02-18T12:19:11Z urn:sha1:5ecc9681133f1894e81c385eddd09981f78f1193 a syscall, replace the double nop with a dsb nsh; isb; sequence which stops the CPU from speculating any further. This fix was suggested by Anthony Steinhauser. ok deraadt@ Insert two nop instructions after each svc #0 instruction in userland. 2020-01-26T02:19:43Z kettenis kettenis@openbsd.org 2020-01-26T02:19:43Z urn:sha1:0c401ffc2a2550c32105ce180746b0a95071123b The will be replaced by a speculation barrier as soon as we teach the kernel to skip over these two instructions when returning from a system call. ok patrick@, deraadt@ Stop exporting the internal _mcount symbol as that's only referenced 2019-10-26T18:47:10Z guenther guenther@openbsd.org 2019-10-26T18:47:10Z urn:sha1:589b4acdbba65d6ecc6e77d9aac5e27618bc75fb by the ASM stub, which is also in libc. The compiler only generates invocations of the latter. ok mpi@ deraadt@ kettenis@ Compile with -gdwarf-4 to suppress wrnings about DWARF2 in assembly code 2019-04-01T03:53:21Z kettenis kettenis@openbsd.org 2019-04-01T03:53:21Z urn:sha1:82106270414712f2822459917f700a9a9f071e23 that includes retguard code. ok mortimer@ Add retguard to arm64 libc syscalls and setjmp / longjmp. 2018-10-01T22:49:50Z mortimer mortimer@openbsd.org 2018-10-01T22:49:50Z urn:sha1:bbeaada4689520859307d5cf69224e7b786b0148 ok kettenis@ Add retguard macros for arm64 asm and apply them in the straightforward 2018-08-12T17:15:10Z mortimer mortimer@openbsd.org 2018-08-12T17:15:10Z urn:sha1:c03461ec8ccff18f0928abe6d6acb777ce0c1314 cases in kernel and libc. ok deraadt@ Drop include of <arm64/swi.h> and remove it. 2018-05-28T19:36:43Z kettenis kettenis@openbsd.org 2018-05-28T19:36:43Z urn:sha1:d1acf1c22cbb284836f47082c07f3d63c6f5fb2b ok drahm@ Drop memory barrier in _atomic_lock() implementation since the callers now 2018-05-17T20:28:32Z kettenis kettenis@openbsd.org 2018-05-17T20:28:32Z urn:sha1:a7720a9992916b369aecbf7f5386e0c41a6850a2 take care of this. ok visa@, mpi@ Since most (if not all) ARMv8 hardware doesn't actually support trapping of 2018-03-16T10:22:52Z kettenis kettenis@openbsd.org 2018-03-16T10:22:52Z urn:sha1:1ff8d394f3ae9f209c103a45737dbc8f39da325b floating-point exceptions, simplify the functions that control the exception masks just like we did on armv7. ok tom@ Avoid .align 0 here as well. Also fix a .word that should be a .quad. 2017-11-22T20:36:02Z kettenis kettenis@openbsd.org 2017-11-22T20:36:02Z urn:sha1:3563b47a8d51bf7fbd00d5ff3f606d7269182a8c ok patrick@