18 Commits

Author SHA1 Message Date
brooks
ecead64b41 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
brooks
c7531f5a91 Removed unused special fork() implementations.
The arm version hasn't been used in ages.

The mips version uses a valid, but pointless check of v1 and has been
unhooked from the build since r276630.

Differential Revision:	https://reviews.freebsd.org/D2592
Reviewed by:	emaste
Sponsored by:	DARPA, AFRL
2015-05-29 19:42:55 +00:00
kib
2254748ed0 The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), and
pwrite(2) syscalls are wrapped to provide compatibility with pre-7.x
kernels which required padding before the off_t parameter.  The
fcntl(2) contains compatibility code to handle kernels before the
struct flock was changed during the 8.x CURRENT development.  The
shims were reasonable to allow easier revert to the older kernel at
that time.

Now, two or three major releases later, shims do not serve any
purpose.  Such old kernels cannot handle current libc, so revert the
compatibility code.

Make padded syscalls support conditional under the COMPAT6 config
option.  For COMPAT32, the syscalls were under COMPAT6 already.

Remove WITHOUT_SYSCALL_COMPAT build option, which only purpose was to
(partially) disable the removed shims.

Reviewed by:	jhb, imp (previous versions)
Discussed with:	peter
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-04-18 21:50:13 +00:00
emaste
3fa46c366d libc: Eliminate duplicate copies of __vdso_gettc.c
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D2152
2015-04-02 21:18:11 +00:00
imp
9878392e1a Convert from WITHOUT_SYSCALL_COMPAT to MK_SYSCALL_COMPAT. 2014-04-05 17:54:43 +00:00
kib
3913be8cf6 Rework the __vdso_* symbols attributes to only make the symbols weak,
but use normal references instead of weak.  This makes the statically
linked binaries to use fast gettimeofday(2) by forcing the linker to
resolve references and providing the neccessary functions.

Reported by:	bde
Tested by:	marius (sparc64)
MFC after:	2 weeks
2013-01-30 12:48:16 +00:00
jchandra
28ebaa4671 use PTR_WORD for __curbrk and minbrk instead of .word, the new version
wil support all ABIs.

Approved by:	rrs (mentor)
2010-06-25 05:36:36 +00:00
jchandra
fc8e5640fd Merge jmallett@'s n64 work into HEAD - changeset 2
Update libc Makefiles.
Add makecontext implementation.

Changes from http://svn.freebsd.org/base/user/jmallett/octeon

Approved by:	rrs(mentor), jmallett
2010-06-16 14:13:36 +00:00
jchandra
fa919cddc1 Merge jmallett@'s n64 work into HEAD - changeset 1.
Update libc assembly code to use macros that work on both o32 and n64.
Merge string functions from NetBSD.

The changes are from http://svn.freebsd.org/base/user/jmallett/octeon

Approved by:	rrs (mentor), jmallett
2010-06-16 12:55:14 +00:00
neel
3e324aa481 Reinstate the ptrace patch to restore the 'gp' register after calling
a function. I made a mistake in assuming that the .cprestore directive
will cause the assembler to automatically restore 'gp' after the 'jalr'.

The .cprestore directive does its magic only after 'jal' and 'bal'
instructions - not the 'jalr'.

Pointed out by: c.jayachandran@gmail.com
2010-02-04 05:49:59 +00:00
rrs
5946a34d07 -White space cleanup (missing spaces in new line)
-Remove extra tab.
-Took out the duplicate code that cprestore does.
All suggested by Neel.
2010-02-03 20:54:04 +00:00
rrs
d0128a84c5 This fixes a bug found and fixed by JC. Basically
no save was being done of the ra and gp pointers
before we call the __error function.

Obtained from:	JC (c.jayachandran@gmail.com)
2010-02-03 12:59:44 +00:00
imp
0ec6bf46ab Merge r197800 from projects/mips to head by hand:
r197800 | gonzo | 2009-10-06 00:35:52 -0600 (Tue, 06 Oct 2009) | 3 lines
- curbrk variable for sbrk and brk should be the same
- Add correct variable names to Symbol.map
2010-01-08 23:59:04 +00:00
imp
ef3be571f7 These warnings are only relevant on NetBSD it seems. They don't seem
to be relevant to FreeBSD at all.
2009-02-19 19:53:58 +00:00
ed
9d3703b842 Mark uname(), getdomainname() and setdomainname() with COMPAT_FREEBSD4.
Looking at our source code history, it seems the uname(),
getdomainname() and setdomainname() system calls got deprecated
somewhere after FreeBSD 1.1, but they have never been phased out
properly. Because we don't have a COMPAT_FREEBSD1, just use
COMPAT_FREEBSD4.

Also fix the Linuxolator to build without the setdomainname() routine by
just making it call userland_sysctl on kern.domainname. Also replace the
setdomainname()'s implementation to use this approach, because we're
duplicating code with sysctl_domainname().

I wasn't able to keep these three routines working in our
COMPAT_FREEBSD32, because that would require yet another keyword for
syscalls.master (COMPAT4+NOPROTO). Because this routine is probably
unused already, this won't be a problem in practice. If it turns out to
be a problem, we'll just restore this functionality.

Reviewed by:	rdivacky, kib
2008-11-09 10:45:13 +00:00
imp
87785b8e3a Add mips support libc from the mips2-jnpr branch of perforce. 2008-04-26 12:08:02 +00:00
obrien
b4472eebdd Remove these abortive MIPS bits. 2002-03-23 17:55:32 +00:00
imp
4d23a3a1e4 Bring in initial libc support for mips. These files were taken from
the OpenBSD tree and should be considered preliminary.  They are here
to facilitate building of the tree.
1999-03-03 07:06:17 +00:00