Commit Graph

1129 Commits

Author SHA1 Message Date
trasz 4feb21d705 Mark inline functions with __unused;
prevents compiler warning when they end up being unused.

Reviewed by:	kib
Obtained from:	OpenBSD
MFC after:	2 weeks
Sponsored by:	Klara Inc.
Differential Revision:	https://reviews.freebsd.org/D20185
2019-06-07 09:13:13 +02:00
pfg 160f9f0bf2 sys/sys: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2019-06-07 09:11:15 +02:00
Sebastian Huber f5a5a23ea8 Fix <sys/_types.h> issues with <stddef.h>
A commit from 2016 tried to address this GCC provided <stddef.h> issue

    #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
      || defined(__DragonFly__) \
      || defined(__FreeBSD_kernel__)
    /* __size_t is a typedef on FreeBSD 5, must not trash it. */
    #elif defined (__VMS__)
    /* __size_t is also a typedef on VMS.  */
    #else
    #define __size_t
    #endif

with an include of <stddef.h> before <sys/_types.h> in <sys/types.h>.
Is is not robust enough.  Do the include of <stddef.h> in <sys/_types.h>
directly and request only the necessary types.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-06-03 10:20:15 +02:00
Sebastian Huber 86809750bb Avoid <sys/cdefs.h> dependency in <sys/_types.h>
Including <sys/cdefs.h> could result in cyclic header dependencies.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-06-03 10:20:15 +02:00
Sebastian Huber 66e75b6961 Avoid cyclic header dependencies
RTEMS uses a considerable part of FreeBSD kernel and user space sources.
These sources are compiled with a __FreeBSD__ define.  On 2018-06-26
Gerald Pfeifer changed the GCC provided <stddef.h> so that it includes
<sys/_types.h> if __FreeBSD__ is defined.  The Newlib <sys/_types.h>
included <sys/lock.h> which includes <sys/cdefs.h> on RTEMS which
includes <stddef.h>.  To get rid of this cyclic dependency move the
optional _flock_t definition to <sys/reent.h>.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-06-03 10:20:15 +02:00
Yaakov Selkowitz 850705f92e Cygwin: add secure_getenv
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2019-02-19 13:01:50 -06:00
Sebastian Huber 1d35a003fd Define u_register_t if __BSD_VISIBLE
Add u_register_t definition for FreeBSD compatibility.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-02-19 09:06:22 +01:00
Sebastian Huber 688e584efe Change register_t definition
On 64-bit targets, the register_t type must be a 64-bit integer.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-02-19 09:06:22 +01:00
Sebastian Huber 6246ef7949 Fix comment in <sys/types.h>
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-02-19 09:06:22 +01:00
Sebastian Huber 9d4a6534fb Move RTEMS and XMK specific type definitions
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-02-19 09:06:22 +01:00
Jozef Lawrynowicz b14a879d85 Remove matherr, and SVID and X/Open math library configurations
Default math library configuration is now IEEE
2019-01-23 10:46:24 +01:00
Corinna Vinschen 13ea67a3c6 time.h: Add CLOCK_REALTIME_ALARM/CLOCK_BOOTTIME_ALARM
Slightly reshuffle and add comment

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-22 15:39:39 +01:00
Jeff Johnston 1787e9d033 AMD GCN Port contributed by Andrew Stubbs <ams@codesourcery.com>
Add support for the AMD GCN GPU architecture.  This is primarily intended for
use with OpenMP and OpenACC offloading.  It can also be used for stand-alone
programs, but this is intended mostly for testing the compiler and is not
expected to be useful in general.

The GPU architecture is highly parallel, and therefore Newlib must be
configured to use dynamic re-entrancy, and thread-safe malloc.

The only I/O available is a via a shared-memory interface provided by libgomp
and the gcn-run tool included with GCC.  At this time this is limited to
stdout, argc/argv, and the return code.
2019-01-15 10:48:08 -05:00
Corinna Vinschen fe8f406cc6 fcntl.h: expose AT_EMPTY_PATH with _GNU_SOURCE only
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-07 20:09:20 +01:00
Corinna Vinschen 9443efe099 Cygwin: linkat: support Linux-specific AT_EMPTY_PATH flag
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-07 19:36:37 +01:00
Corinna Vinschen b93022a82d Cygwin: open: support Linux-specific O_PATH flag
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-07 19:35:00 +01:00
Sebastian Huber 55db4a8e3a sys/time.h: Remove KASSERT
The KASSERT is only used by the FreeBSD kernel.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-12-04 07:39:20 +01:00
imp be517bd298 Ensure that all values of ns, us and ms work
for {n,u,m}stosbt

Integer overflows and wrong constants limited the accuracy of these
functions and created situatiosn where sbttoXs(Xstosbt(Y)) != Y. This
was especailly true in the ns case where we had millions of values
that were wrong.

Instead, used fixed constants because there's no way to say ceil(X)
for integer math. Document what these crazy constants are.

Also, use a shift one fewer left to avoid integer overflow causing
incorrect results, and adjust the equasion accordingly. Document this.

Allow times >= 1s to be well defined for these conversion functions
(at least the Xstosbt). There's too many users in the tree that they
work for >= 1s.

This fixes a failure on boot to program firmware on the mlx4
NIC. There was a msleep(1000) in the code. Prior to my recent rounding
changes, msleep(1000) worked, but msleep(1001) did not because the old
code rounded to just below 2^64 and the new code rounds to just above
it (overflowing, causing the msleep(1000) to really sleep 1ms).

A test program to test all cases will be committed shortly. The test
exaustively tries every value (thanks to bde for the test).

Sponsored by: Netflix, Inc
Differential Revision: https://reviews.freebsd.org/D18051
2018-12-04 07:39:15 +01:00
imp 7bf8fc0987 When converting ns,us,ms to sbt, return the ceil()
of the result rather than the floor(). Returning the floor means that
sbttoX(Xtosbt(y)) != y for almost all values of y. In practice, this
results in a difference of at most 1 in the lsb of the sbintime_t. This
difference is meaningless for all current users of these functions, but
is important for the newly introduced sysctl conversion routines which
implicitly rely on the transformation being idempotent.

Sponsored by: Netflix, Inc
2018-12-04 07:30:18 +01:00
ian 68b1d72e1d Correct a misplaced closing paren.
Does not affect the result, but does clarify (at least for me) that the
multiplication happens before the shift.
2018-12-04 07:30:09 +01:00
pfg 3266b2dd5e sys: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2018-12-04 07:30:05 +01:00
ian 3c3c17500c Add inline functions to convert between sbintime_t
and decimal time units. Use them in some existing code that is
vulnerable to roundoff errors.

The existing constant SBT_1NS is a honeypot, luring unsuspecting folks into
writing code such as long_timeout_ns*SBT_1NS to generate the argument for a
sleep call.  The actual value of 1ns in sbt units is ~4.3, leading to a
large roundoff error giving a shorter sleep than expected when multiplying
by the trucated value of 4 in SBT_1NS.  (The evil honeypot aspect becomes
clear after you waste a whole day figuring out why your sleeps return early.)
2018-12-04 07:29:51 +01:00
imp 8f4149ea93 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2018-12-04 07:29:50 +01:00
Corinna Vinschen 09870c6e95 stdio.h: Expose cuserid with __GNU_VISIBLE
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-11-29 11:22:42 +01:00
Corinna Vinschen f4d6ef2d41 time.h: Introduce Linux-specific CLOCK id values
- Add CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_RAW,
  CLOCK_MONOTONIC_COARSE and CLOCK_BOOTTIME

- Guard new values with __GNU_VISIBLE

- Add CLOCK_REALTIME_COARSE as (clockid_t) 0 for simplicity
  (It allows to have all values < 8 and so be used as array
   index into an array of clocks)

- Fix macro bracketing

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-11-29 10:01:57 +01:00
Sebastian Huber 2ab57ad59b Fix v850 target for RTEMS
Do not define __ATTRIBUTE_IMPURE_PTR__ for RTMES on the v850 target.
The previous definition lead to the following linker error in
combination with -fdata-sections:

relocation truncated to fit: R_V810_GPWLO_1 against symbol
`_global_impure_ptr' defined in .rodata._global_impure_ptr section in
libc.a(lib_a-impure.o)

relocation truncated to fit: R_V810_GPWLO_1 against symbol `_impure_ptr'
defined in .data._impure_ptr section in libc.a(lib_a-impure.o)

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-11-08 09:38:13 +01:00
Sebastian Huber 08eab6396f Fix posix_memalign() attributes
The malloc, alloc_size and alloc_aligned attributes must be only used in
case the function returns the pointer to the allocated memory.

See also:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87683

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-22 11:26:39 +02:00
Sebastian Huber da418955f5 Move common <sys/dirent.h> content to <dirent.h>
Move common content of the various <sys/dirent.h> and the latest FreeBSD
<dirent.h> to <dirent.h>.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11 08:29:16 +02:00
Sebastian Huber d3d838cc26 Make some standard open() flags visible
Make the POSIX O_CLOEXEC, O_NOFOLLOW, O_DIRECTORY, O_EXEC, and O_SEARCH
open() flags available also to non-Cygwin systems.

Make the BSD/glibc O_DIRECT open() flag  available also to non-Cygwin
systems.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11 08:29:16 +02:00
Sebastian Huber 201bbec6e4 Add attributes to malloc-like functions
These attributes help static analysis tools to produce less false
positives, e.g. double free warnings.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-10 07:40:06 +02:00
Keith Packard 77f8a6dfab Use !__HAVE_LOCALE_INFO__ define to use _ctype_ directly [v2]
When __HAVE_LOCALE_INFO__ is not selected, directly access the
existing _ctype_ variable from __locale_ctype_ptr() and
__locale_ctype_ptr_l(), eliminating the need for any locale or reent
structure

Signed-off-by: Keith Packard <keithp@keithp.com>

v2:
	locale: fix conflict with __locale_ctype_ptr macro

	If we are building without __HAVE_LOCALE_INFO__, there is a
	macro providing __locale_ctype_ptr which in turn fouls up this
	declaration.

	Signed-off-by: Michael Lyle <mlyle@lyle.org>
2018-09-06 14:19:53 +02:00
Keith Packard 28ecec475f Include sys/syslimits.h in limits.h
This makes sure any system-defined limits are specified before the
defaults are checked. Without this, ARG_MAX and PATH_MAX end up
getting the default definitions from limits.h rather than the defines
from syslimits.h. This could potentially cause problems when
different files used different values for the same name.

Signed-off-by: Keith Packard <keithp@keithp.com>
2018-09-06 14:11:45 +02:00
Andy Koppe d8ccbcdacc Drop non-reserved parameter names from sys/signal.h
Standard headers shouldn't use non-reserved identifiers as parameter
names in function declarations, because programs could in theory
define macros with such names before including a header.
2018-08-29 17:46:27 +02:00
rrs 215e33310b This commit brings in a new refactored TCP stack called Rack.
Rack includes the following features: - A different SACK processing
scheme (the old sack structures are not used). - RACK (Recent
acknowledgment) where counting dup-acks is no longer done instead time
is used to knwo when to retransmit. (see the I-D) - TLP (Tail Loss
Probe) where we will probe for tail-losses to attempt to try not to take
a retransmit time-out. (see the I-D) - Burst mitigation using TCPHTPS -
PRR (partial rate reduction) see the RFC.

Once built into your kernel, you can select this stack by either
socket option with the name of the stack is "rack" or by setting
the global sysctl so the default is rack.

Note that any connection that does not support SACK will be kicked
back to the "default" base  FreeBSD stack (currently known as "default").

To build this into your kernel you will need to enable in your
kernel:
   makeoptions WITH_EXTRA_TCP_STACKS=1
   options TCPHPTS

Sponsored by:	Netflix Inc.
Differential Revision:		https://reviews.freebsd.org/D15525
2018-08-24 15:00:04 +02:00
Sebastian Huber 5d29023c11 Add __nl_item to <sys/_types.h> and use it
Add __nl_item to <sys/_types.h> for FreeBSD compatibility.  Use it in
<langinfo.h> and the Cygwin <nl_types.h>.  Make the enum __nl_item in
<langinfo.h> anonymous.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:00:01 +02:00
Sebastian Huber c233d42264 Declare GNU-specific sched_getcpu()
This is a glibc extension.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-07 14:34:11 +02:00
Sebastian Huber 62a5c6b02c Add attributes to allocator functions
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-30 10:47:57 +02:00
Sebastian Huber a31a7bad6a FreeBSD compat. __alloc_size(), __alloc_align()
Restore FreeBSD compatibility for __alloc_size() and __alloc_align().

This is a follow-up to commit e494b56035.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-30 10:47:57 +02:00
pfg 271e856a49 Define a new __alloc_size2 attribute to complement the exiting support.
At least on GCC7 calling __alloc_size(x) twice is not equivalent to
calling using the attribute once with two arguments. The later is the
documented use in GCC documentation so add a new alloc_size(n, x)
alternative to cover for the few places where it is used: basically:
calloc(3), reallocarray(3) and  mallocarray(9).

Submitted by:	Mark Millard
MFC after:	3 days
Reference:
http://docs.freebsd.org/cgi/mid.cgi?F227842D-6BE2-4680-82E7-07906AF61CD7
2018-07-30 10:47:57 +02:00
kib 1736bd3003 Remove lint support from system headers and MD x86 headers.
Reviewed by:	dim, jhb
Discussed with:	imp
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D13156
2018-07-30 10:47:57 +02:00
pfg 00a7ef9163 sys: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2018-07-30 10:47:57 +02:00
ed@FreeBSD.org 84e294dc69 Make _Static_assert() work with GCC in older C++ standards.
GCC only activates C11 keywords in C mode, not C++ mode. This means
that when targeting an older C++ standard, we cannot fall back to using
_Static_assert(). In this case, do define _Static_assert() as a macro
that uses a typedef'ed array.

Discussed in:	r322875 commit thread
Reported by:	Mark MIllard
MFC after:	1 month
2018-07-30 10:47:57 +02:00
Yaakov Selkowitz f6417be2aa Cygwin: define _POSIX_ASYNCHRONOUS_IO
This feature is now available as of the recent AIO commits.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-07-25 10:48:55 -05:00
Szabolcs Nagy 393a1cb4ea Move __HAVE_FAST_FMA to math_config.h
Define it consistently with other HAVE_* macros that only affect code
using math_config.h.  This is also closer to the Arm Optimized Routines
code.
2018-07-06 10:29:01 +02:00
Corinna Vinschen 006520ca2b newlib: enable new math functions on Cygwin
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-06-27 15:53:51 +02:00
Szabolcs Nagy e5791079c6 New log implementation
The new implementations are provided under !__OBSOLETE_MATH, it uses
ISO C99 code.  With default settings the worst case error in nearest
rounding mode is 0.519 ULP with inlined fma and fma contraction.  It uses
a 2 KB lookup table, on aarch64 .text+.rodata size of libm.a is increased
by 1703 bytes.  The w_log.c wrapper is disabled since error handling is
inline in the new code.

New __HAVE_FAST_FMA and __HAVE_FAST_FMA_DEFAULT feature macros were
added to enable selecting between the code path that uses fma and the
one that does not.  Targets supposed to set __HAVE_FAST_FMA_DEFAULT
if they have single instruction fma and the compiler can actually
inline it (gcc has __FP_FAST_FMA macro but that does not guarantee
inlining with -fno-builtin-fma).

Improvements on Cortex-A72:
latency: 1.9x
thruput: 2.3x
2018-06-27 15:40:49 +02:00
Thomas Kindler 9dd3c3b0ad newlib: getopt now permutes multi-flag options correctly
Previously, "test 1 2 3 -a -b -c"  was permuted to "test -a -b -c 1 2 3",
but "test 1 2 3 -abc" was left as "test 1 2 3 -abc".

Signed-off-by: Thomas Kindler <mail+newlib@t-kindler.de>
2018-06-18 18:45:44 +02:00
Jeff Johnston cd31fbb2ae Add nvptx port.
- From: Cesar Philippidis <cesar@codesourcery.com>
  Date: Tue, 10 Apr 2018 14:43:42 -0700
  Subject: [PATCH] nvptx port

  This port adds support for Nvidia GPU's, which are primarily used as
  offload accelerators in OpenACC and OpenMP.
2018-04-13 15:42:37 -04:00
Joel Sherrill 948db3e4b7 Correct prototypes of pthread_mutex_getprioceiling() and pthread_setschedparam() 2018-03-15 09:25:45 -05:00
Yaakov Selkowitz 829820af6e ssp: fix wchar.h with -std=c99
https://sourceware.org/ml/newlib/2018/msg00261.html

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-03-14 10:46:32 -05:00
Yaakov Selkowitz e494b56035 Fix alloc_align and alloc_size macros for multiple arguments
https://sourceware.org/ml/newlib/2018/msg00263.html

This is a follow-up to commit 4564b30f33.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-03-14 10:17:51 -05:00
Jon Turney 4564b30f33 Correct alloc_size annotation on reallocarray()
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
2018-03-13 09:04:56 -05:00
Sebastian Huber a9c8434527 Make _CLOCKID_T_ system configurable
Let systems optionally provide the _CLOCKID_T_ type via
<machine/_types.h>.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-03-06 11:40:16 +01:00
Our Air Quality b7520b14d5 Add global stdio streams support for reent small. 2018-03-01 18:05:31 -05:00
Jaap de Wolff 337cee51ca Add prototype to _malloc_lock() and *unlock() to malloc.h, and inlude this from nano-mallocr.c 2018-02-16 12:16:07 +01:00
Corinna Vinschen 4c73ad6b20 newlib: drop Cygwin license from sys/select.h
This license was accidentally retained when moving the file from Cygwin to newlib.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-02-02 11:27:58 +01:00
Yaakov Selkowitz b920561fe3 ssp: do not use __ssp_protected_ symbol prefixes
This is a NetBSD-specific detail which does not apply to Newlib, causing
linking issues in certain scenarios:

https://cygwin.com/ml/cygwin/2018-01/msg00189.html

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-26 11:51:15 -06:00
Thomas Preudhomme 7d09d0e261 Disable powf/log2?f/exp2?f optimization for single-precision Arm FPU
New optimized powf, logf, log2f, expf and exp2f yield worse performance
on Arm targets with only single precision instructions because the
double precision arithmetic is then implemented via softfloat routines.
This patch uses the old implementation when double precision
instructions are not available on Arm targets.

Testing: Built newlib with GCC's rmprofile Arm multilibs and compared
before/after -> only the above functions are changed and calls to them
(name change from logf to __ieee754_logf and similar). Testing the
changed function on a panel of values yields the same result before the
original patches to improve them and after this one. Double checking the
performance by looping the same panel of values being tested on Arm
Cortex-M4 does show the performance regression is fixed.
2018-01-25 16:08:35 +01:00
Yaakov Selkowitz bd62f539de Guard langinfo.h nl_item from multiple typedefs
This is a prerequisite of adding nl_types.h support to Cygwin.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-19 13:19:21 -06:00
Kito Cheng cba678ba02 RISC-V: Fix alignment issue in sigjmp_buf 2018-01-18 09:21:10 +01:00
Yaakov Selkowitz 7192f84096 ansification: remove _HAVE_STDC
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:30 -06:00
Yaakov Selkowitz 70ee6b17df ansification: remove _EXFUN, _EXFUN_NOTHROW
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:29 -06:00
Yaakov Selkowitz 77f16db546 ansification: remove _EXFNPTR, _EXPARM
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:27 -06:00
Yaakov Selkowitz 9087163804 ansification: remove _DEFUN
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:26 -06:00
Yaakov Selkowitz 44276afe2a ansification: remove _VOLATILE, _SIGNED
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:21 -06:00
Yaakov Selkowitz 67ee0cac4c ansification: remove _VOID
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:20 -06:00
Yaakov Selkowitz fff27f8429 ansification: remove _DEFUN_VOID
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:19 -06:00
Yaakov Selkowitz 670b01da7f ansification: remove _CAST_VOID
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:17 -06:00
Yaakov Selkowitz e6321aa6a6 ansification: remove _PTR
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:16 -06:00
Yaakov Selkowitz eea249da3b ansification: remove _PARAMS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:13 -06:00
Yaakov Selkowitz e13e191b60 ansification: remove _NOARGS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:11 -06:00
Yaakov Selkowitz 2310096fbc ansification: remove _DOTS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:10 -06:00
Yaakov Selkowitz 0bda30e1ff ansification: remove _CONST
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:08 -06:00
Yaakov Selkowitz 6783860a2e ansification: remove _AND
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:05 -06:00
Yaakov Selkowitz 82339fcd71 Make __always_inline macro compatible with glibc
For example, this is used when cross-compiling the Linux kernel on Cygwin.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-16 13:24:42 -06:00
Yaakov Selkowitz 2cb24159fb cygwin: add LFS_CFLAGS etc. to confstr/getconf
These are used, for instance, when cross-compiling the Linux kernel.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-16 12:12:45 -06:00
Martin Aberg 1251555311 newlib: Availability of _kill() in sys/signal.h
Make prototype of _kill() always visible when _COMPILING_NEWLIB is
defined. This makes <sys/signal.h> consistent with the use of
_COMPILING_NEWLIB in <sys/unistd.h>, <sys/times.h>, etc.
2017-12-18 19:58:05 +01:00
Yaakov Selkowitz 8f7c712bb8 ssp: add Object Size Checking for wchar.h, part 1
The following functions are also guarded in glibc:
fwprintf, swprintf, wprintf, vfwprintf, vswprintf, vwprintf.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-04 04:09:46 -06:00
Yaakov Selkowitz 8ba0bbb913 ssp: add Object Size Checking for unistd.h, part 2
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:49 -06:00
Yaakov Selkowitz b9a662bb4c Feature test macros overhaul: unistd.h, part 3
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-30 12:09:05 -06:00
Yaakov Selkowitz 1e43e181c2 ssp: add Object Size Checking for stdlib.h
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-30 12:09:03 -06:00
Yaakov Selkowitz 8a94bca694 string: add wmempcpy
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-30 04:06:49 -06:00
Yaakov Selkowitz 6b02865d80 ssp: add Object Size Checking for unistd.h, part 1
The implementation is from NetBSD, with the addition of feature test macros
for readlink.  glibc also wraps the following functions:
confstr, getdomainname, getgroups, gethostname, getlogin_r, getwd, pread,
readlinkat, ttyname_r.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:44 -06:00
Yaakov Selkowitz 576093d46b ssp: add Object Size Checking for stdio.h, part 1
The implementation is mostly from NetBSD, except for switching fgets to
pure inline, and the addition of fgets_unlocked, fread, and fread_unlocked
for parity with glibc.  The following functions are also guarded in glibc:
asprintf, dprintf, fprintf, printf, vasprintf, vdprintf, vfprintf, vprintf.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:42 -06:00
Yaakov Selkowitz a997f98b2a ssp: add Object Size Checking for strings.h
The implementation is from NetBSD, with the addition of explicit_bzero
for parity with glibc.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:41 -06:00
Yaakov Selkowitz e4fc4d7bc4 ssp: add Object Size Checking for string.h
The implementation is from NetBSD, with the addition of mempcpy (a GNU
extension) for parity with glibc and libssp.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:40 -06:00
Yaakov Selkowitz 3e8fc7d9f2 ssp: add Object Size Checking common code
The Object Size Checking (-D_FORTIFY_SOURCE=*) functionality provides
wrappers around functions suspectible to buffer overflows.  While
independent from Stack Smashing Protection (-fstack-protector*), they
are often used and implemented together.

While GCC also provides an implementation in libssp, it is completely
broken (CVE-2016-4973, RHBZ#1324759) and seemingly unfixable, as there
is no reliable way for a preprocessor macro to trigger a link flag.
Therefore, adding this here is necessary to make it work.

Note that this does require building gcc with --disable-libssp and
gcc_cv_libc_provides_ssp=yes.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:39 -06:00
Yaakov Selkowitz 36a0a675b4 Make __nonnull macro compatible with glibc
This form allows for multiple arguments, e.g. __nonnull((1,2)).

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-28 10:26:29 -06:00
Yaakov Selkowitz f2b27ce620 cygwin: define _POSIX_TIMEOUTS
Since commit 8128f5482f, we have all the
non-tracing functions listed in posixoptions(7).  The tracing functions
are gated by their own option, and are obsolecent anyway.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-28 10:26:00 -06:00
Jeff Johnston 569d048c89 Add the Aarch64 SVE specific HWCAP_SVE define
Checking in change from Alan Hayward <Alan.Hayward@arm.com>

Signed-off-by: Jeff Johnston <jjohnstn@redhat.com>
2017-11-22 14:10:37 -05:00
Corinna Vinschen baaceb8f37 Cygwin: fcntl.h: Use test macros to guard non-standard open flags
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-14 21:45:31 +01:00
Corinna Vinschen f9d071aaf8 Cygwin: fcntl.h: Define O_NOATIME
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-14 21:45:31 +01:00
Corinna Vinschen 0aa99373c1 Cygwin: fcntl.h: Define O_TMPFILE and implement it
Difference to Linux: We can't create files which don't show up
in the filesystem due to OS restrictions.  As a kludge, make a
(half-hearted) attempt to hide the file in the filesystem.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-14 21:45:25 +01:00
Sebastian Huber 1f42dc2bcf Make ffsl() and ffsll() BSD-visible
Since glibc 2.27, they are visible via _DEFAULT_SOURCE (__USE_MISC):

https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/commit/man3/ffs.3?id=247bbcf00c9a425ab0ad6e303ec8718e4ba844a6

In FreeBSD, they are guarded by __BSD_VISIBLE.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-11-03 10:46:07 +01:00
Szabolcs Nagy c156098271 New expf, exp2f, logf, log2f and powf implementations
Based on code from https://github.com/ARM-software/optimized-routines/

This patch adds a highly optimized generic implementation of expf,
exp2f, logf, log2f and powf.  The new functions are not only
faster (6x for powf!), but are also smaller and more accurate.
In order to achieve this, the algorithm uses double precision
arithmetic for accuracy, avoids divisions and uses small table
lookups to minimize the polynomials.  Special cases are handled
inline to avoid the unnecessary overhead of wrapper functions and
set errno to POSIX requirements.

The new functions are added under newlib/libm/common, but the old
implementations are kept (in newlib/libm/math) for non-IEEE or
pre-C99 systems.  Targets can enable the new math code by defining
__OBSOLETE_MATH_DEFAULT to 0 in newlib/libc/include/machine/ieeefp.h,
users can override the default by defining __OBSOLETE_MATH.
Currently the new code is enabled for AArch64 and AArch32 with VFP.
Targets with a single precision FPU may still prefer the old
implementation.

libm.a size changes:
arm: -1692
arm/thumb/v7-a/nofp: -878
arm/thumb/v7-a+fp/hard: -864
arm/thumb/v7-a+fp/softfp: -908
aarch64: -1476
2017-10-13 10:58:00 +02:00
Sebastian Huber 4de8754bac Change time_t to 64-bit by default
In order to avoid the year 2038 problem, define time_t to a signed
integer with at least 64-bits.  The type for time_t can be forced to
long with the --enable-newlib-long-time_t configure option or with the
_USE_LONG_TIME_T system configuration define.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-09-07 15:39:34 +02:00
Corinna Vinschen e18b7ffa48 stdio.h: Don't define unlocked macros using static inline on C++
In C++, the usage of static inline functions for getchar_unlocked and
putchar_unlocked may result in error messages like

  error: ‘_putchar_unlocked’ was not declared in this scope

Fix this by not using the _getchar_unlocked and _putchar_unlocked
macros in C++.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-09-04 10:52:33 +02:00
Yaakov Selkowitz 51d1fb715d include: fix ffs, fls guards
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-08-30 12:29:47 -05:00
Sichen Zhao c206d04422 Port strnstr.c to newlib. 2017-08-25 18:00:46 +02:00
Eric Blake a4961ccd3f Revert "headers: avoid bareword attributes" for clang
This reverts most of commit 979d467ff6.

We cannot avoid some bareword attributes until clang is fixed to
properly support __-decorated attributes; see this bug:
https://bugs.llvm.org/show_bug.cgi?id=34319

The macros in question expand to the empty string under gcc, so
only compilation under clang is affected, and since clang has the
bug, the obvious solution is to roll back the changes, and document
the issue.

Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-25 09:23:10 -05:00