Commit graph

10 commits

Author SHA1 Message Date
Brooks Davis
97e5d68bb0 Remove architecture specific shmat.S files.
These files are identical to the generated system calls.
In the case of MIPS, the file was already disconnected from the build.

Submitted by:	Ali Mashtizadeh <ali@mashtizadeh.com>
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D14976
2018-04-05 18:17:46 +00:00
Brooks Davis
7dd87e9a82 Remove architecture specific sigreturn.S files.
All of these files are identical (modulo license blocks and VCS IDs) to
the files generated by lib/libc/sys/Makefile.inc and serve no purpose.

Reported by:	Ali Mashtizadeh <ali@mashtizadeh.com>
Reviewed by:	kib
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14953
2018-04-04 22:45:08 +00:00
Brooks Davis
aec2fba60f Reduce duplicate NOASM and PSEUDO definitions
The initial value of NOASM is nearly the same in all cases and the
initial value of PSEUDO is the same in all cases so reduce duplication
(and hopefully, future merge conflicts) by machine independent defaults.

Also document the PSEUDO variable.

Reviewed by:	jhb, kib
Obtained from:	CheriBSD
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D7820
2016-09-08 22:38:20 +00:00
Konstantin Belousov
f6fea94e5d Remove commented out mention of ptrace.S.
After r305012 the asm wrapper is not needed.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2016-08-29 18:53:51 +00:00
George V. Neville-Neil
5cba398b0c Remove unusedd and obsolete openbsd_poll system call. (Phase 1)
Reported by:	brooks
Reviewed by:	brooks,jhb
Differential Revision:	https://reviews.freebsd.org/D7548
2016-08-18 10:50:40 +00:00
Brooks Davis
b60998c633 Replace use of the pipe(2) system call with pipe2(2) with a zero flags
value.

This eliminates the need for machine dependant assembly wrappers for
pipe(2).

It also make passing an invalid address to pipe(2) return EFAULT rather
than triggering a segfault.  Document this behavior (which was already
true for pipe2(2), but undocumented).

Reviewed by:	andrew
Approved by:	re (gjb)
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D6815
2016-06-22 21:11:27 +00:00
Andrew Turner
94098ab7c3 Remove brk and sbrk from arm64. They were defined in The Single UNIX
Specification, Version 2, but marked as legacy, and have been removed from
later specifications. After 12 years it is time to remove them from new
architectures when the main use for sbrk is an invalid method to attempt
to find how much memory has been allocated from malloc.

There are a few places in the tree that still call sbrk, however they are
not used on arm64. They will need to be fixed to cross build from arm64,
but these will be fixed in a follow up commit.

Old copies of binutils from ports called into sbrk, however this has been
fixed around 6 weeks ago. It is advised to update binutils on arm64 before
installing a world that includes this change.

Reviewed by:	brooks, emaste
Obtained from:	brooks
Relnotes:	yes
Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D6464
2016-05-20 15:04:48 +00:00
Andrew Turner
4798b7f381 Disable support for compat syscalls on arm64. These symbols were never
shipped since arm64 exists only on 11+.

Submitted by:	brooks
Reviewed by:	emaste, imp
2016-04-06 16:09:10 +00:00
Konstantin Belousov
4d22d07a07 Add support for usermode (vdso-like) gettimeofday(2) and
clock_gettime(2) on ARMv7 and ARMv8 systems which have architectural
generic timer hardware. It is similar how the RDTSC timer is used in
userspace on x86.

Fix a permission problem where generic timer access from EL0 (or
userspace on v7) was not properly initialized on APs.

For ARMv7, mark the stack non-executable. The shared page is added for
all arms (including ARMv8 64bit), and the signal trampoline code is
moved to the page.

Reviewed by:	andrew
Discussed with:	emaste, mmel
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D4209
2015-12-07 12:20:26 +00:00
Andrew Turner
d422e6f9b5 Add the start of libc and libstand for arm64. Not all of the machine
dependent functions have been implemented, but this is enough for world.

Differential Revision:	https://reviews.freebsd.org/D2132
Reviewed by:	emaste
Sponsored by:	The FreeBSD Foundation
2015-04-07 09:52:14 +00:00