src/sys/arm64/linux/linux_sysvec.c, branch release/14.3.0FreeBSD source treehttps://cgit-dev.freebsd.org/src/atom?h=release%2F14.3.02024-02-19T13:13:49Zarm64: Create a Linux view of the ID registers2024-02-19T13:13:49ZAndrew Turnerandrew@FreeBSD.org2023-10-25T12:34:38Zurn:sha1:082bc380936e68e0fa37b3daa4269dc34c0735a9
When adding support for new hardware extensions we may not want to
enable support for the FreeBSD and Linux ABIs at the same time. To
support this split the Linux ID register and hwcaps so they can be
configured separately.
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D42372
(cherry picked from commit e6dbc99d47ddb254d75822817592bb82b5ce4d97)
arm64: Use the Linux sigframe to restore registers2023-11-06T15:12:23ZAndrew Turnerandrew@FreeBSD.org2023-10-25T09:50:11Zurn:sha1:c21038f55230693b46cef0d900ff4fa90c05fcf6
When returning from a Linux signal use the Linux sigframe to find the
register values to restore.
Remove the FreeBSD ucontext from the stack as it's now unneeded.
PR: 270250
Reviewed by: dchagin, emaste
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D42360
(cherry picked from commit 070a4ff82a34652d533f9315ae9ad0aa8f1fdeb2)
linux(4): Drop the outdated comment, nosys is fine since 39024a892023-10-18T05:52:33ZDmitry Chagindchagin@FreeBSD.org2023-10-10T09:20:51Zurn:sha1:133ada6bff538483f308296ee944aa5ee24954ee
MFC after: 1 week
(cherry picked from commit 03f5bd1e462576838e79145379ce314e2e03e4b3)
syscalls: fix missing SIGSYS for several ENOSYS errors2023-10-09T03:24:31ZKonstantin Belousovkib@FreeBSD.org2023-09-25T16:32:52Zurn:sha1:e0f1021386bd9df6d3510e6fc70572fb157f046f
(cherry picked from commit 39024a89146902ca9aba250130b828ad9aced99d)
linux(4): Cleanup includes under arm642023-09-24T10:51:36ZDmitry Chagindchagin@FreeBSD.org2023-09-11T18:29:28Zurn:sha1:cce0625cdf4f014b819b1a9665a299f127eae48a
No functional changes.
MFC after: 1 week
(cherry picked from commit 027d727d4071435376017d3789fe603a8aec805a)
linux(4): Validate exec_setregs on arm642023-09-24T10:51:36ZDmitry Chagindchagin@FreeBSD.org2023-09-05T18:19:08Zurn:sha1:e68a2f18b64a0b3b6e17f4a8ada68c6332e14423
The lr register is cleared at the beginning of the _dl_start and _start,
so there is no need to initialize it.
Gnu libc _start takes an rtld_fini pointer in x0 which is set by ld.so
for __libc_start_main, the kernel does not register any atexit pointers.
While here fix whitespaces.
MFC after: 1 week
(cherry picked from commit 20845a6994c548977874d1f413044d43c8474f0a)
linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc7432023-08-18T10:12:02ZDmitry Chagindchagin@FreeBSD.org2023-08-18T10:12:02Zurn:sha1:3460fab5fced39c7ea597cc7de0ebc3e4c88989asys: Remove $FreeBSD$: one-line .c pattern2023-08-16T17:54:36ZWarner Loshimp@FreeBSD.org2023-08-16T17:54:36Zurn:sha1:685dc743dc3b5645e34836464128e1c0558b404b
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
linux(4): Use pwd_altroot() to tell namei() about ABI root path2023-05-29T08:16:46ZDmitry Chagindchagin@FreeBSD.org2023-05-29T08:16:46Zurn:sha1:fd745e1db6b561900b8e5e9caa4ed05cf15398b3
PR: 72920
Differential Revision: https://reviews.freebsd.org/D40090
MFC after: 2 month
linux(4): Rework signal trampoline on Aarch642023-05-14T21:27:31ZDmitry Chagindchagin@FreeBSD.org2023-05-14T21:27:31Zurn:sha1:d957343f8713a312442a0140b7a7752ed7b2d870
To avoid clobbering of any registers by the trampoline code use Linux
way to call signal handlers. I.e., we are out from the kernel right into
the signal handler, put return address from the signal handler into the
link register.
The mysterious NOP is required for some unwinders (e.g. libc++) that
unconditionally subtract one from the result of _Unwind_GetIP() in order
to identify the calling function.
MFC after: 1 week