Commit Graph

3450 Commits

Author SHA1 Message Date
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 3b6994ec5f stdlib: Use __get_numeric_locale instead of __localeconv_l for decimal_point
The string/float conversion functions need to get the locale decimal
point. Instead of calling __localeconv_l (which copies locale data
into lconv form from __get_numeric_locale), use __get_numeric_locale
directly.

Signed-off-by: Keith Packard <keithp@keithp.com>
2018-09-06 14:14:05 +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
Keith Packard 81e0841dbc xdr_private.h needs sys/types.h for u_char
u_char is defined in sys/types.h, which doesn't appear to get
included, at least in my environments.

Signed-off-by: Keith Packard <keithp@keithp.com>
2018-09-06 14:10:42 +02:00
Szabolcs Nagy f92a4c5d2d Document the log table generation method
Add comments with enough detail so the log lookup tables can be recreated.
2018-09-06 13:34:13 +02:00
Jon Beniston 7283d2513c stdlib/arc4random.c: Fix reseed count for 16-bit targets. 2018-09-06 13:26:25 +02:00
Wilco Dijkstra 6dbb20dfc7 Improve strstr performance of short needles
Improve strstr performance for the common case of short needles.  For a single
character strchr is best, for 2-4 characters a small loop is fastest.  For these
the speedup over the Two-Way algorithm is ~10 times on large strings.

Newlib builds, the new code passes GLIBC testsuite. OK for commit?
2018-09-05 10:09:31 +02:00
Jon Beniston 86c31ae47b math_config.h: Fix signed overflow warning for 16-bit targets 2018-09-03 09:41:26 +02:00
Jon Beniston fcc1e7039f e_scalb.c: Call scalbln instead of scalbn on 16-bit targets to ensure constant fits in an int. 2018-09-03 09:41:23 +02:00
Andy Koppe 3017f23f1c Avoid ARM SWI Seek when querying file position
Issuing an ARM semi-hosting Seek command when just querying file
position with SEEK_CUR and offset zero is unnecessary, because unlike
the lseek() Unix system call the Seek command does not actually return
the file position. For that reason, syscalls.c for ARM keeps track of
file position in the 'poslog', so we can just return that.

Moreover, since the Seek command only accepts an absolute file position,
SEEK_CUR operations are implemented by adding the relative offset to the
position in the poslog. If the host implements non-binary files with
implicit carriage return characters but doesn't discount those implicit
CRs when implementing Seek (by just mapping straight to Windows file
operations), this actually ended up wrongly changing file position when
using SEEK_CUR with offset zero or functions like ftell() or fgetpos()
that are based on that.

Also, use off_t rather than int for the poslog.
2018-09-03 09:40:39 +02:00
Jon Beniston a9cfb33b6c Add --disable-newlib-fno-builtin to allow compilation without -fno-builtin for smaller and faster code. 2018-08-31 15:40:42 -04:00
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
Keith Packard 82dfae9ab0 Use __inhibit_loop_to_libcall in all memset/memcpy implementations
This macro selects a compiler option that disables recognition of
common memset/memcpy patterns and converting those to direct
memset/memcpy calls.

Signed-off-by: Keith Packard <keithp@keithp.com>
2018-08-29 16:05:37 +02:00
Keith Packard 088a45cdf6 Remove unused variable 'one' from sf_cos.c
Defined, never mentioned.

Signed-off-by: Keith Packard <keithp@keithp.com>
2018-08-29 15:57:27 +02:00
Keith Packard 2c245028af Use nanf("") instead of nanf(NULL)
Newer GCC versions require a non-NULL argument to this function for
some reason.

Signed-off-by: Keith Packard <keithp@keithp.com>
2018-08-29 15:57:27 +02:00
Sebastian Huber d13c84eb07 RTEMS: Add kvaddr_t and ksize_t
These types were introduced by FreeBSD commit:

"Make struct xinpcb and friends word-size independent.

Replace size_t members with ksize_t (uint64_t) and pointer members
(never used as pointers in userspace, but instead as unique
idenitifiers) with kvaddr_t (uint64_t). This makes the structs
identical between 32-bit and 64-bit ABIs.

On 64-bit bit systems, the ABI is maintained. On 32-bit systems,
this is an ABI breaking change. The ABI of most of these structs
was previously broken in r315662.  This also imposes a small API
change on userspace consumers who must handle kernel pointers
becoming virtual addresses.

PR:		228301 (exp-run by antoine)
Reviewed by:	jtl, kib, rwatson (various versions)
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D15386"

In RTEMS, there is no user/kernel space separation.  So, use the types
size_t and uintptr_t.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:07:29 +02:00
Sebastian Huber d35971f392 RTEMS: Introduce <machine/_kernel_mman.h>
This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:43 +02:00
Sebastian Huber a2a8600f7d RTEMS: Introduce <machine/_kernel_socket.h>
This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:43 +02:00
Sebastian Huber 764d748c9c RTEMS: Introduce <machine/_kernel_if.h>
This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:43 +02:00
Sebastian Huber 0c0dd28596 RTEMS: Introduce <machine/_kernel_in.h>
This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:43 +02:00
Sebastian Huber 9ce55ee716 RTEMS: Introduce <machine/_kernel_in6.h>
This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:43 +02:00
Sebastian Huber c07fa084e0 RTEMS: Introduce <machine/_kernel_uio.h>
This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:43 +02:00
Sebastian Huber 9bbf89dd11 RTEMS: Add __BSD_VISIBLE in <sys/_termios.h>
The __XSI_VISIBLE is not enabled by default in Newlib.  This is an
incompatiblity between FreeBSD and glibc.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:42 +02:00
Sebastian Huber 890c86d633 RTEMS: Update FreeBSD version tags
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-24 15:04:39 +02:00
tuexen fe3e8b90dc Add SOL_SOCKET level socket option
with name SO_DOMAIN to get the domain of a socket.

This is helpful when testing and Solaris and Linux have the same
socket option using the same name.

Reviewed by:		bcr@, rrs@
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D16791
2018-08-24 15:00:04 +02:00
jtl 823b096471 Implement a limit on on the number of IPv6 reassembly
queues per bucket.

There is a hashing algorithm which should distribute IPv6 reassembly
queues across the available buckets in a relatively even way. However,
if there is a flaw in the hashing algorithm which allows a large number
of IPv6 fragment reassembly queues to end up in a single bucket, a per-
bucket limit could help mitigate the performance impact of this flaw.

Implement such a limit, with a default of twice the maximum number of
reassembly queues divided by the number of buckets. Recalculate the
limit any time the maximum number of reassembly queues changes.
However, allow the user to override the value using a sysctl
(net.inet6.ip6.maxfragbucketsize).

Reviewed by:	jhb
Security:	FreeBSD-SA-18:10.ip
Security:	CVE-2018-6923
2018-08-24 15:00:04 +02:00
jtl 0e5c59050d Add a limit of the number of fragments per IPv6 packet.
The IPv4 fragment reassembly code supports a limit on the number of
fragments per packet. The default limit is currently 17 fragments.
Among other things, this limit serves to limit the number of fragments
the code must parse when trying to reassembly a packet.

Add a limit to the IPv6 reassembly code. By default, limit a packet
to 65 fragments (64 on the queue, plus one final fragment to complete
the packet). This allows an average fragment size of 1,008 bytes, which
should be sufficient to hold a fragment. (Recall that the IPv6 minimum
MTU is 1280 bytes. Therefore, this configuration allows a full-size
IPv6 packet to be fragmented on a link with the minimum MTU and still
carry approximately 272 bytes of headers before the fragmented portion
of the packet.)

Users can adjust this limit using the net.inet6.ip6.maxfragsperpacket
sysctl.

Reviewed by:	jhb
Security:	FreeBSD-SA-18:10.ip
Security:	CVE-2018-6923
2018-08-24 15:00:04 +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
sbruno b40c48e057 Load balance sockets with new SO_REUSEPORT_LB option.
This patch adds a new socket option, SO_REUSEPORT_LB, which allow multiple
programs or threads to bind to the same port and incoming connections will be
load balanced using a hash function.

Most of the code was copied from a similar patch for DragonflyBSD.

However, in DragonflyBSD, load balancing is a global on/off setting and can not
be set per socket. This patch allows for simultaneous use of both the current
SO_REUSEPORT and the new SO_REUSEPORT_LB options on the same system.

Required changes to structures:
Globally change so_options from 16 to 32 bit value to allow for more options.
Add hashtable in pcbinfo to hold all SO_REUSEPORT_LB sockets.

Limitations:
As DragonflyBSD, a load balance group is limited to 256 pcbs (256 programs or
threads sharing the same socket).

This is a substantially different contribution as compared to its original
incarnation at svn r332894 and reverted at svn r332967.  Thanks to rwatson@
for the substantive feedback that is included in this commit.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
Obtained from:	DragonflyBSD
Relnotes:	Yes
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D11003
2018-08-24 15:00:04 +02:00
mmacy 44e0190a8c iflib(9): Add support for cloning pseudo interfaces
Part 3 of many ...
The VPC framework relies heavily on cloning pseudo interfaces
(vmnics, vpc switch, vcpswitch port, hostif, vxlan if, etc).

This pulls in that piece. Some ancillary changes get pulled
in as a side effect.

Reviewed by:	shurd@
Approved by:	sbruno@
Sponsored by:	Joyent, Inc.
Differential Revision:	https://reviews.freebsd.org/D15347
2018-08-24 15:00:04 +02:00
sbruno 6a98562b52 Revert r332894 at the request of the submitter.
Submitted by:	Johannes Lundberg <johalun0_gmail.com>
Sponsored by:	Limelight Networks
2018-08-24 15:00:04 +02:00
sbruno 5c636abe89 Load balance sockets with new SO_REUSEPORT_LB option
This patch adds a new socket option, SO_REUSEPORT_LB, which allow multiple
programs or threads to bind to the same port and incoming connections will be
load balanced using a hash function.

Most of the code was copied from a similar patch for DragonflyBSD.

However, in DragonflyBSD, load balancing is a global on/off setting and can not
be set per socket. This patch allows for simultaneous use of both the current
SO_REUSEPORT and the new SO_REUSEPORT_LB options on the same system.

Required changes to structures
Globally change so_options from 16 to 32 bit value to allow for more options.
Add hashtable in pcbinfo to hold all SO_REUSEPORT_LB sockets.

Limitations
As DragonflyBSD, a load balance group is limited to 256 pcbs
(256 programs or threads sharing the same socket).

Submitted by:	Johannes Lundberg <johanlun0@gmail.com>
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D11003
2018-08-24 15:00:04 +02:00
brooks 341e131f7f Add 32-bit compat for ioctls that take struct ifgroupreq.
Use an accessor to access ifgr_group and ifgr_groups.

Use an macro CASE_IOC_IFGROUPREQ(cmd) in place of case statements such
as "case SIOCAIFGROUP:". This avoids poluting the switch statements
with large numbers of #ifdefs.

Reviewed by:	kib
Obtained from:	CheriBSD
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14960
2018-08-24 15:00:03 +02:00
brooks 79291d6123 Use an accessor function to access ifr_data.
This fixes 32-bit compat (no ioctl command defintions are required
as struct ifreq is the same size).  This is believed to be sufficent to
fully support ifconfig on 32-bit systems.

Reviewed by:	kib
Obtained from:	CheriBSD
MFC after:	1 week
Relnotes:	yes
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14900
2018-08-24 15:00:03 +02:00
jeff c0f64943e7 Implement several enhancements to NUMA policies.
Add a new "interleave" allocation policy which stripes pages across
domains with a stride or width keeping contiguity within a multi-page
region.

Move the kernel to the dedicated numbered cpuset #2 making it possible
to assign kernel threads and memory policy separately from user.  This
also eliminates the need for the complicated interrupt binding code.

Add a sysctl API for viewing and manipulating domainsets.  Refactor some
of the cpuset_t manipulation code using the generic bitset type so that
it can be used for both.  This probably belongs in a dedicated subr file.

Attempt to improve the include situation.

Reviewed by:	kib
Discussed with:	jhb (cpuset parts)
Tested by:	pho (before review feedback)
Sponsored by:	Netflix, Dell/EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D14839
2018-08-24 15:00:03 +02:00
brooks f967e60cab Fix access to ifru_buffer on freebsd32.
Make all kernel accesses to ifru_buffer go via access functions
which take the process ABI into account and use an appropriate union
to access members in the correct place in struct ifreq.

Reviewed by:	kib
Obtained from:	CheriBSD
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14846
2018-08-24 15:00:03 +02:00
kib b0250c7356 Allow to specify PCP on packets not belonging to any VLAN.
According to 802.1Q-2014, VLAN tagged packets with VLAN id 0 should be
considered as untagged, and only PCP and DEI values from the VLAN tag
are meaningful.  See for instance
https://www.cisco.com/c/en/us/td/docs/switches/connectedgrid/cg-switch-sw-master/software/configuration/guide/vlan0/b_vlan_0.html.

Make it possible to specify PCP value for outgoing packets on an
ethernet interface.  When PCP is supplied, the tag is appended, VLAN
id set to 0, and PCP is filled by the supplied value.  The code to do
VLAN tag encapsulation is refactored from the if_vlan.c and moved into
if_ethersubr.c.

Drivers might have issues with filtering VID 0 packets on
receive.  This bug should be fixed for each driver.

Reviewed by:	ae (previous version), hselasky, melifaro
Sponsored by:	Mellanox Technologies
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D14702
2018-08-24 15:00:03 +02:00
brooks 9cea1c4489 Move uio enums to sys/_uio.h.
Include _uio.h instead of uio.h in several headers to reduce header
polution.

Fix a few places that relied on header polution to get the uio.h header.

I have not moved struct uio as many more things that use it rely on
header polution to get other definitions from uio.h.

Reviewed by:	cem, kib, markj
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14811
2018-08-24 15:00:03 +02:00
jtl 61d5f8adfa Add the "TCP Blackbox Recorder"
which we discussed at the developer summits at BSDCan and BSDCam in 2017.

The TCP Blackbox Recorder allows you to capture events on a TCP connection
in a ring buffer. It stores metadata with the event. It optionally stores
the TCP header associated with an event (if the event is associated with a
packet) and also optionally stores information on the sockets.

It supports setting a log ID on a TCP connection and using this to correlate
multiple connections that share a common log ID.

You can log connections in different modes. If you are doing a coordinated
test with a particular connection, you may tell the system to put it in
mode 4 (continuous dump). Or, if you just want to monitor for errors, you
can put it in mode 1 (ring buffer) and dump all the ring buffers associated
with the connection ID when we receive an error signal for that connection
ID. You can set a default mode that will be applied to a particular ratio
of incoming connections. You can also manually set a mode using a socket
option.

This commit includes only basic probes. rrs@ has added quite an abundance
of probes in his TCP development work. He plans to commit those soon.

There are user-space programs which we plan to commit as ports. These read
the data from the log device and output pcapng files, and then let you
analyze the data (and metadata) in the pcapng files.

Reviewed by:	gnn (previous version)
Obtained from:	Netflix, Inc.
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D11085
2018-08-24 15:00:03 +02:00
brooks 4d144963ea Add _IOC_NEWLEN() and _IOC_NEWTYPE() macros.
These macros take an existing ioctl(2) command and replace the length
with the specified length or length of the specified type respectively.
These can be used to define commands for 32-bit compatibility with fewer
opportunities for cut-and-paste errors then a whole new definition.

Reviewed by:	cem, kib
Obtained from:	CheriBSD
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14706
2018-08-24 15:00:03 +02:00
pkelsey b4d6660d85 This is an implementation of the client side of TCP Fast Open (TFO)
[RFC7413]. It also includes a pre-shared key mode of operation in which
the server requires the client to be in possession of a shared secret in
order to successfully open TFO connections with that server.

The names of some existing fastopen sysctls have changed (e.g.,
net.inet.tcp.fastopen.enabled -> net.inet.tcp.fastopen.server_enable).

Reviewed by:	tuexen
MFC after:	1 month
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D14047
2018-08-24 15:00:03 +02:00
ae@FreeBSD.org b43341334e Follow the RFC6980 and silently ignore following IPv6 NDP messages
that had the IPv6 fragmentation header:
o Neighbor Solicitation
o Neighbor Advertisement
o Router Solicitation
o Router Advertisement
o Redirect

Introduce M_FRAGMENTED mbuf flag, and set it after IPv6 fragment reassembly
is completed. Then check the presence of this flag in correspondig ND6
handling routines.

PR:		224247
MFC after:	2 weeks
2018-08-24 15:00:03 +02:00
pfg ba2eaf10ad SPDX: license IDs for some ISC-related files. 2018-08-24 15:00:03 +02:00
glebius d937538075 Garbage collect IFCAP_POLLING_NOCOUNT.
It wasn't used since very beginning of polling(4). The module always
ignored return value from driver polling handler.
2018-08-24 15:00:03 +02:00
pfg fba31eac2e 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.
2018-08-24 15:00:03 +02:00
pfg 1329e846c7 include: 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.
2018-08-24 15:00:03 +02:00
pfg 9f0f4785e8 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.
2018-08-24 15:00:03 +02:00
kib 91e828be4f Use hardware timestamps to report packet timestamps
for SO_TIMESTAMP and other similar socket options.

Provide new control message SCM_TIME_INFO to supply information about
timestamp.  Currently it indicates that the timestamp was
hardware-assisted and high-precision, for software timestamps the
message is not returned.  Reserved fields are added to ABI to report
additional info about it, it is expected that raw hardware clock value
might be useful for some applications.

Reviewed by:	gallatin (previous version), hselasky
Sponsored by:	Mellanox Technologies
MFC after:	2 weeks
X-Differential revision:	https://reviews.freebsd.org/D12638
2018-08-24 15:00:02 +02:00
kib 7ff81234c4 Add a place for a driver to report rx timestamps
in nanoseconds from boot for the received packets.

The rcv_tstmp field overlaps the place of Ln header length indicators,
not used by received packets.  The basic pkthdr rearrangement change
in sys/mbuf.h was provided by gallatin.

There are two accompanying M_ flags: M_TSTMP means that there is the
timestamp (and it was generated by hardware).

Another flag M_TSTMP_HPREC indicates that the timestamp is
high-precision.  Practically M_TSTMP_HPREC means that hardware
provided additional precision comparing with the stamps when the flag
is not set.  E.g., for ConnectX all packets are stamped by hardware
when PCIe transaction to write out the completion descriptor is
performed, but PTP packet are stamped on port.  For Intel cards, when
PTP assist is enabled, only PTP packets are stamped in the limited
number of registers, so if Intel cards ever start support this
mechanism, they would always set M_TSTMP | M_TSTMP_HPREC if hardware
timestamp is present for the given packet.

Add IFCAP_HWRXTSTMP interface capability to indicate the support for
hardware rx timestamping, and ifconfig(8) command to toggle it.

Based on the patch by:	gallatin
Reviewed by:	gallatin (previous version), hselasky
Sponsored by:	Mellanox Technologies
MFC after:	2 weeks (? mbuf KBI issue)
X-Differential revision:	https://reviews.freebsd.org/D12638
2018-08-24 15:00:02 +02:00
sephe 1182b9fe17 if: Add ioctls to get RSS key and hash type/function.
It will be needed by hn(4) to configure its RSS key and hash
type/function in the transparent VF mode in order to match VF's
RSS settings. The description of the transparent VF mode and
the RSS hash value issue are here:
https://svnweb.freebsd.org/base?view=revision&revision=322299
https://svnweb.freebsd.org/base?view=revision&revision=322485

These are generic enough to promise two independent IOCs instead
of abusing SIOCGDRVSPEC.

Setting RSS key and hash type/function is a different story,
which probably requires more discussion.

Comment about UDP_{IPV4,IPV6,IPV6_EX} were only in the patch
in the review request; these hash types are standardized now.

Reviewed by:	gallatin
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D12174
2018-08-24 15:00:02 +02:00
des b329ee9386 Correct sysctl names. 2018-08-24 15:00:02 +02:00
kib 471f29861e Relax visibility for some termios symbols.
They are defined by XSI or newer SUS.
This is a follow-up to r318780.

Reported by:	jbeich
Obtained from:	DragonflyBSD commit e08b3836c962
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2018-08-24 15:00:02 +02:00
kib eb82d7086c Implement address space guards.
Guard, requested by the MAP_GUARD mmap(2) flag, prevents the reuse of
the allocated address space, but does not allow instantiation of the
pages in the range.  It is useful for more explicit support for usual
two-stage reserve then commit allocators, since it prevents accidental
instantiation of the mapping, e.g. by mprotect(2).

Use guards to reimplement stack grow code.  Explicitely track stack
grow area with the guard, including the stack guard page.  On stack
grow, trivial shift of the guard map entry and stack map entry limits
makes the stack expansion.  Move the code to detect stack grow and
call vm_map_growstack(), from vm_fault() into vm_map_lookup().

As result, it is impossible to get random mapping to occur in the
stack grow area, or to overlap the stack guard page.

Enable stack guard page by default.

Reviewed by:	alc, markj
Man page update reviewed by:	alc, bjk, emaste, markj, pho
Tested by:	pho, Qualys
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D11306 (man pages)
2018-08-24 15:00:02 +02:00
glebius 99b9b925fe Listening sockets improvements.
o Separate fields of struct socket that belong to listening from
  fields that belong to normal dataflow, and unionize them.  This
  shrinks the structure a bit.
  - Take out selinfo's from the socket buffers into the socket. The
    first reason is to support braindamaged scenario when a socket is
    added to kevent(2) and then listen(2) is cast on it. The second
    reason is that there is future plan to make socket buffers pluggable,
    so that for a dataflow socket a socket buffer can be changed, and
    in this case we also want to keep same selinfos through the lifetime
    of a socket.
  - Remove struct struct so_accf. Since now listening stuff no longer
    affects struct socket size, just move its fields into listening part
    of the union.
  - Provide sol_upcall field and enforce that so_upcall_set() may be called
    only on a dataflow socket, which has buffers, and for listening sockets
    provide solisten_upcall_set().

o Remove ACCEPT_LOCK() global.
  - Add a mutex to socket, to be used instead of socket buffer lock to lock
    fields of struct socket that don't belong to a socket buffer.
  - Allow to acquire two socket locks, but the first one must belong to a
    listening socket.
  - Make soref()/sorele() to use atomic(9).  This allows in some situations
    to do soref() without owning socket lock.  There is place for improvement
    here, it is possible to make sorele() also to lock optionally.
  - Most protocols aren't touched by this change, except UNIX local sockets.
    See below for more information.

o Reduce copy-and-paste in kernel modules that accept connections from
  listening sockets: provide function solisten_dequeue(), and use it in
  the following modules: ctl(4), iscsi(4), ng_btsocket(4), ng_ksocket(4),
  infiniband, rpc.

o UNIX local sockets.
  - Removal of ACCEPT_LOCK() global uncovered several races in the UNIX
    local sockets.  Most races exist around spawning a new socket, when we
    are connecting to a local listening socket.  To cover them, we need to
    hold locks on both PCBs when spawning a third one.  This means holding
    them across sonewconn().  This creates a LOR between pcb locks and
    unp_list_lock.
  - To fix the new LOR, abandon the global unp_list_lock in favor of global
    unp_link_lock.  Indeed, separating these two locks didn't provide us any
    extra parralelism in the UNIX sockets.
  - Now call into uipc_attach() may happen with unp_link_lock hold if, we
    are accepting, or without unp_link_lock in case if we are just creating
    a socket.
  - Another problem in UNIX sockets is that uipc_close() basicly did nothing
    for a listening socket.  The vnode remained opened for connections.  This
    is fixed by removing vnode in uipc_close().  Maybe the right way would be
    to do it for all sockets (not only listening), simply move the vnode
    teardown from uipc_detach() to uipc_close()?

Sponsored by:		Netflix
Differential Revision:	https://reviews.freebsd.org/D9770
2018-08-24 15:00:02 +02:00
delphij ca3b7a988a Implement INHERIT_ZERO for minherit(2).
INHERIT_ZERO is an OpenBSD feature.

When a page is marked as such, it would be zeroed
upon fork().

This would be used in new arc4random(3) functions.

PR:	182610
Reviewed by:	kib (earlier version)
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D427
2018-08-24 15:00:02 +02:00
imp 16636ede3c 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
2018-08-24 15:00:02 +02:00
ed@FreeBSD.org 08139e557b mprotect(): Change prototype to comply to POSIX.
Our mprotect() function seems to take a "const void *" address to the
pages whose permissions need to be adjusted. POSIX uses "void *". Simply
stick to the POSIX one to prevent us from writing unportable code.

PR:		211423 (exp-run)
Tested by:	antoine@ (Thanks!)
2018-08-24 15:00:02 +02:00
kib c3df6d5155 Implement process-shared locks support
for libthr.so.3, without breaking the ABI. Special value is stored in
the lock pointer to indicate shared lock, and offline page in the shared
memory is allocated to store the actual lock.

Reviewed by:	vangyzen (previous version)
Discussed with:	deischen, emaste, jhb, rwatson,
	Martin Simmons <martin@lispworks.com>
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
2018-08-24 15:00:02 +02:00
jhb 7cfc736e89 Add a new file operations hook for mmap
operations. File type-specific logic is now placed in the mmap hook
implementation rather than requiring it to be placed in
sys/vm/vm_mmap.c. This hook allows new file types to support mmap() as
well as potentially allowing mmap() for existing file types that do not
currently support any mapping.

The vm_mmap() function is now split up into two functions.  A new
vm_mmap_object() function handles the "back half" of vm_mmap() and accepts
a referenced VM object to map rather than a (handle, handle_type) tuple.
vm_mmap() is now reduced to converting a (handle, handle_type) tuple to a
a VM object and then calling vm_mmap_object() to handle the actual mapping.
The vm_mmap() function remains for use by other parts of the kernel
(e.g. device drivers and exec) but now only supports mapping vnodes,
character devices, and anonymous memory.

The mmap() system call invokes vm_mmap_object() directly with a NULL object
for anonymous mappings.  For mappings using a file descriptor, the
descriptors fo_mmap() hook is invoked instead.  The fo_mmap() hook is
responsible for performing type-specific checks and adjustments to
arguments as well as possibly modifying mapping parameters such as flags
or the object offset.  The fo_mmap() hook routines then call
vm_mmap_object() to handle the actual mapping.

The fo_mmap() hook is optional.  If it is not set, then fo_mmap() will
fail with ENODEV.  A fo_mmap() hook is implemented for regular files,
character devices, and shared memory objects (created via shm_open()).

While here, consistently use the VM_PROT_* constants for the vm_prot_t
type for the 'prot' variable passed to vm_mmap() and vm_mmap_object()
as well as the vm_mmap_vnode() and vm_mmap_cdev() helper routines.
Previously some places were using the mmap()-specific PROT_* constants
instead.  While this happens to work because PROT_xx == VM_PROT_xx,
using VM_PROT_* is more correct.

Differential Revision:	https://reviews.freebsd.org/D2658
Reviewed by:	alc (glanced over), kib
MFC after:	1 month
Sponsored by:	Chelsio
2018-08-24 15:00:02 +02:00
jhb 60b466fbc2 Retire the unimplemented MAP_RENAME
and MAP_NORESERVE flags to mmap(2). Older binaries are still permitted
to use these flags.

PR:		193961 (exp-run in ports)
Differential Revision:	https://reviews.freebsd.org/D848
Reviewed by:	kib
2018-08-24 15:00:02 +02:00
jhb 3d5043e2cb Add a new fo_fill_kinfo fileops method
to add type-specific information to struct kinfo_file. - Move the
various fill_*_info() methods out of kern_descrip.c and into the various
file type implementations. - Rework the support for kinfo_ofile to
generate a suitable kinfo_file object for each file and then convert
that to a kinfo_ofile structure rather than keeping a second, different
set of code that directly manipulates type-specific file information. -
Remove the shm_path() and ksem_info() layering violations.

Differential Revision:	https://reviews.freebsd.org/D775
Reviewed by:	kib, glebius (earlier version)
2018-08-24 15:00:02 +02:00
kib de24ef326d Add MAP_EXCL flag for mmap(2).
It should be combined with MAP_FIXED, and prevents the request from
deleting existing mappings in the region, failing instead.

Reviewed by:	alc
Discussed with:	jhb
Tested by:	markj, pho (previous version, as part of the bigger patch)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2018-08-24 15:00:02 +02:00
jhb 472476a5a7 Add a mmap flag (MAP_32BIT) on 64-bit platforms
to request that a mapping use an address in the first 2GB of the
process's address space. This flag should have the same semantics as the
same flag on Linux.

To facilitate this, add a new parameter to vm_map_find() that specifies an
optional maximum virtual address.  While here, fix several callers of
vm_map_find() to use a VMFS_* constant for the findspace argument instead of
TRUE and FALSE.

Reviewed by:	alc
Approved by:	re (kib)
2018-08-24 15:00:02 +02:00
kib e6a85661ce Implement read(2)/write(2) and neccessary lseek(2)
for posix shmfd. Add MAC framework entries for posix shm read and write.

Do not allow implicit extension of the underlying memory segment past
the limit set by ftruncate(2) by either of the syscalls.  Read and
write returns short i/o, lseek(2) fails with EINVAL when resulting
offset does not fit into the limit.

Discussed with:	alc
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
2018-08-24 15:00:02 +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 3bc64b88c3 RTEMS: Add __tls_get_addr() to crt0
Add __tls_get_addr() for all targets to crt0.  This is not only used on
ARM.  In particular, it is used on RISC-V.  This helps to adequately
support the GCC libgomp.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de
2018-08-20 13:54:22 +02:00
Masamichi Hosoda c8d4c99ecd Fix strtof ("-nan") returns positive NaN
strtof ("-nan") returned positive NaN instead of negative NaN.
strtod ("-nan") and strtold ("-nan") return negative NaN.

Linux glibc has been fixed
that strto{f|d|ld} ("-nan") returns negative NaN.
https://sourceware.org/bugzilla/show_bug.cgi?id=23007

This commit makes strtof preserves the negative sign bit
when parsing "-nan" like glibc.
2018-08-16 13:17:44 +02:00
Masamichi Hosoda 4c8fa88e4d Remove unused NaN's integer representation definitions
By previous commit, strto{d|ld} ("nan")
does not use the definition of NaN.
There is no other function that uses the definitions.

This commit remove the definitions.
2018-08-16 13:17:44 +02:00
Masamichi Hosoda 6c212a8b78 Fix strtod ("nan") and strtold ("nan") returns wrong negative NaN
The definition of qNaN for x86_64 and i386 was wrong.
strto{d|ld} ("nan") returned wrong negative NaN
instead of correct positive NaN
since it used the wrong definition.

On the other hand, strtof ("nan") returns correct positive NaN
since it uses nanf ("") instead of the wrong definition.

This commit makes strto{d|ld} ("nan") uses {nan|nanl} ("")
like strtof ("nan") using.
So strto{d|ld} ("nan") returns positive NaN.
2018-08-16 13:17:44 +02:00
Wilco Dijkstra 8f1259a6ef Improve sincosf comments
Improve comments in sincosf implementation to make the code easier
to understand.  Rename the constant pi64 to pi63 since it's actually
PI * 2^-63.  Add comments for fields of sincos_t structure.  Add comments
describing implementation details to reduce_fast.
2018-08-16 13:17:44 +02:00
Aditya Upadhyay a9a4554723 Added Restriction on base value 2018-08-13 09:42:21 +02:00
Corinna Vinschen b9dab9f4c6 newlib: strftime: fix over-enthusiastic fix from 0283642f35
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 23:59:34 +02:00
Corinna Vinschen 054ff18f5f newlib: don't use __visibility__ attrribute on Cygwin
gcc doesn't support visibility attribute on PE/COFF platforms

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 10:50:19 +02:00
Corinna Vinschen 6f485ba026 newlib: don't check malloc/free pointer
use preprocessor check for MALLOC_PROVIDED instead

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 10:50:19 +02:00
Corinna Vinschen 2d87d95f12 newlib: fix various gcc warnings
* unused variables
* potentially used uninitialized
* suggested bracketing
* misleading indentation

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 10:50:19 +02:00
Corinna Vinschen 5ace9004d9 newlib: wordexp: drop dangerous fprintf
wordexp uses fprintf in a dangerous way.  It uses an unchecked
input string as format string, rather than as parameter to a %s.
Replace fprintf with fputs.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 10:50:19 +02:00
Corinna Vinschen ccea3b45b0 newlib: newlocale: fix typo rendering ctype_ptr invalid
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 09:26:32 +02:00
Corinna Vinschen 0283642f35 newlib: strftime: fix gcc warning on __ctloc
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-08-08 09:26:32 +02:00
Sebastian Huber dedeea9965 RTEMS: Add aligned_alloc() to crt0
This is necessary to build the latest GCC 7 branch.

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85904

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-08-08 08:42:28 +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 6158b30e3e RISC-V: Do not use _init/_fini
Introduce new host configuration variable "have_init_fini" which is set
to "yes" by default.  Override it for RISC-V to "no".

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-30 10:47:57 +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
Sebastian Huber 0e5f252bc7 ctype: Avoid GCC note in towctrans_l.c
The previous version genenerated the following GCC note:

towctrans_l.c:44:1: note: offset of packed bit-field 'diff' has changed in GCC 4.4
 caseconv_table [] = {
 ^~~~~~~~~~~~~~

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-30 10:47:57 +02:00
Sebastian Huber d8d18c3e80 ctype: Fix integer type for caseconv_entry::delta
The commit 46ba1675c4 accidently changed a
bit-field from signed to unsigned.  The caseconv_entry::delta must be a
signed integer, see also "newlib/libc/ctype/caseconv.t".

Unfortunately, a standard GCC/Newlib build is done without
-Wsign-conversion.  Using this warning option would have helped to avoid
this bug:

caseconv.t:2:22: warning: unsigned conversion from 'int' to 'unsigned int:17' changes value from '-32' to '131040' [-Wsign-conversion]
   {0x0061, 25, TOUP, -32},

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-30 10:47:57 +02:00
Jordi Sanfeliu 613a7f9036 Fix comparison between two character arrays
Hello,

The member 'id' in the 'utmp' struct is not a numeric but a character array,
hence the strncmp() function is needed to compare two members.
2018-07-30 09:36:49 +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
Sebastian Huber 46ba1675c4 ctype: Fix bitfield types on 16-bit targets
This prevents errors like this:

newlib/libc/ctype/categories.c:6:3: error: width of 'first' exceeds its type
   unsigned int first: 24;
   ^

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-20 14:25:03 +02:00
Sebastian Huber 916ef5fb88 RTEMS: Unconditionally define _off_t to int64_t
Exotic RTEMS targets can define this back to int32_t as an exception if
there are good reasons.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-20 06:53:21 +02:00
DJ Delorie edc4f87311 Remove myself from MAINTAINERS
Stepping down from target-specific maintainerships.
2018-07-19 21:32:40 -04:00
Kumar Gala 6d7e0b337c Print sign of NaN values to nano-vfprintf.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2018-07-17 14:41:59 +02:00
Jordi Sanfeliu ab640f4cd5 Fix to stop a fall-through in a switch statement
The following fixes a fall-through that prevented from reading the
next entry in the UTMP file and terminated the program with an abort().
2018-07-13 13:33:33 +02:00
Siddhesh Poyarekar d02cc7a09d strcmp.S: Improve performance for misaligned strings
Replace the simple byte-wise compare in the misaligned case with a
dword compare with page boundary checks in place.  For simplicity I've
chosen a 4K page boundary so that we don't have to query the actual
page size on the system.

This results in up to 3x improvement in performance in the unaligned
case on falkor and about 2.5x improvement on mustang as measured using
bench-strcmp in glibc.
2018-07-13 13:27:54 +02:00
Siddhesh Poyarekar 2d9f35c2cc memcmp.S: optimize for medium to large sizes
This improved memcmp provides a fast path for compares up to 16 bytes
and then compares 16 bytes at a time, thus optimizing loads from both
sources.  The glibc memcmp microbenchmark retains performance (with an
error of ~1ns) for smaller compare sizes and reduces up to 31% of
execution time for compares up to 4K on the APM Mustang.  On Qualcomm
Falkor this improves to almost 48%, i.e. it is almost 2x improvement
for sizes of 2K and above.
2018-07-13 13:27:54 +02:00
Siddhesh Poyarekar f44eee8f1b Improve strncmp for mutually misaligned inputs
The mutually misaligned inputs on aarch64 are compared with a simple
byte copy, which is not very efficient.  Enhance the comparison
similar to strcmp by loading a double-word at a time.  The peak
performance improvement (i.e. 4k maxlen comparisons) due to this on
the strncmp microbenchmark in glibc is as follows:

falkor: 3.5x (up to 72% time reduction)
cortex-a73: 3.5x (up to 71% time reduction)
cortex-a53: 3.5x (up to 71% time reduction)

All mutually misaligned inputs from 16 bytes maxlen onwards show
upwards of 15% improvement and there is no measurable effect on the
performance of aligned/mutually aligned inputs.
2018-07-13 13:27:54 +02:00
Szabolcs Nagy 81dc535bb9 Remove float compare option from sincosf
PREFER_FLOAT_COMPARISON setting was not correct as it could raise
spurious exceptions.  Fixing it is easy: just use ISLESS(x, y) instead
of abstop12(x) < abstop12(y) with appropriate non-signaling definition
for ISLESS.  However it seems this setting is not very useful (there is
only minor performance difference on various architectures), so remove
this option for now.
2018-07-11 17:16:04 +02:00
Szabolcs Nagy 358f3c61d6 Fix the documentation comments for log_inline in pow
There was a typo and the arguments were not explained clearly.
2018-07-11 17:16:04 +02:00
Szabolcs Nagy 138575c9b9 Fix namespace issues in sinf, cosf and sincosf
Use const sincos_t for clarity instead of making the typedef const.
Use __inv_pi4 and __sincosf_table to avoid namespace issues with
static linking.
2018-07-06 10:29:01 +02:00
Szabolcs Nagy 2805b07fa1 Fix large ulp error in pow without fma very near 1.0
The !HAVE_FAST_FMA code path split r = z/c - 1 into r = rhi + rlo such
that when z = 1-tiny and c = 1 then rlo and rhi could have much larger
magnitude than r which later caused large rounding errors.

So do a nearest rounding instead of truncation at the split.

In newlib with default settings this was observable on some arm targets
that enable the new math code but has no fma.
2018-07-06 10:29:01 +02:00
Szabolcs Nagy 6a85e1a4e5 Change the return type of converttoint and document the semantics
The roundtoint and converttoint internal functions are only called with small
values, so 32 bit result is enough for converttoint and it is a signed int
conversion so the natural return type is int32_t.

The original idea was to help the compiler keeping the result in uint64_t,
then it's clear that no sign extension is needed and there is no accidental
undefined or implementation defined signed int arithmetics.

But it turns out gcc does a good job with inlining so changing the type has
no overhead and the semantics of the conversion is less surprising this way.
Since we want to allow the asuint64 (x + 0x1.8p52) style conversion, the top
bits were never usable and the existing code ensures that only the bottom
32 bits of the conversion result are used.

In newlib with default settings only aarch64 is affected and there is no
significant code generation change with gcc after the patch.
2018-07-06 10:29:01 +02:00
Szabolcs Nagy 73a3e95ff2 Remove unused TOINT_RINT and TOINT_SHIFT macros
Only have separate code paths for TOINT_INTRINSICS and !TOINT_INTRINSICS.
2018-07-06 10:29:01 +02:00
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
Szabolcs Nagy cbe50607fb Fix code style and comments of new math code
Synchronize code style and comments with Arm Optimized Routines, there
are no code changes in this patch.  This ensures different projects using
the same code have consistent code style so bug fix patches can be applied
more easily.
2018-07-06 10:29:01 +02:00
Takashi Yano 6a3e08a53e Fix newlib functions perror()/psignal() not to use writev().
This fix is for some platforms which do not have writev().
*perror.c: Use _write_r() instead of writev().
*psignal.c: Use write() insetad of writev().

Revise commit: d4f4e7ae1b
2018-07-05 15:33:49 -04:00
Takashi Yano d4f4e7ae1b Fix a bug of perror()/psignal() that changes the orientation of stderr.
* perror.c: Fix the problem that perror() changes the orientation
  of stderr to byte-oriented mode if stderr is not oriented yet.
* psignal.c: Ditto.
2018-07-04 14:17:28 +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 b99d49e506 New pow implementation
The new implementation is provided under !__OBSOLETE_MATH, it uses
ISO C99 code.  With default settings the worst case error in nearest
rounding mode is 0.54 ULP with inlined fma and fma contraction.  It uses
a 4 KB lookup table in addition to the table in exp_data.c, on aarch64
.text+.rodata size of libm.a is increased by 2295 bytes.

Improvements on Cortex-A72:
latency: 3.3x
thruput: 4.9x
2018-06-27 15:40:49 +02:00
Szabolcs Nagy 07e2c32828 New log2 implementation
The new implementation is provided under !__OBSOLETE_MATH, it uses
ISO C99 code.  With default settings the worst case error in nearest
rounding mode is 0.547 ULP with inlined fma and fma contraction.  It uses
a 1 KB lookup table, on aarch64 .text+.rodata size of libm.a is increased
by 1584 bytes.

Note that the math.h header defines log2(x) to be log(x)/Ln2, this is
not changed, so the new code is only used if that macro is suppressed.

Improvements on Cortex-A72:
latency: 2.0x
thruput: 2.2x
2018-06-27 15:40:49 +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
Szabolcs Nagy fb929067db New exp and exp2 implementations
The new implementations are provided under !__OBSOLETE_MATH, they use
ISO C99 code.  There are several settings, with the default one the
worst case error in nearest rounding mode is 0.509 ULP for exp and
0.507 ULP for exp2 when a multiply and add is contracted into an fma.
They use a shared 2 KB lookup table, on aarch64 .text+.rodata size
of libm.a is increased by 1868 bytes.  The w_*.c wrappers are disabled
for the new code as it takes care of error handling inline.

The old exp2(x) code used to be just pow(2,x) so the speedup there
is more significant.

The file name has no special prefix to avoid any name collision with
existing files.

Improvements on Cortex-A72:
exp latency: 3.2x
exp thruput: 4.1x
exp2 latency: 7.8x
exp2 thruput: 18.8x
2018-06-27 15:40:49 +02:00
Szabolcs Nagy cfbcbd1c95 Use uint32_t sign argument to math error functions
This change is equivalent to the commit
c65db17340
and only affects code that is from the Arm optimized-routines project.

It does not affect the observable behaviour, but the code generation
can be different on 64bit targets.  The intention is to make the
portable semantics of the code obvious by using a fixed size type.
2018-06-27 15:40:49 +02:00
Takashi Yano 048490485a Fix Unicode table.
* (mkcategories): Fix a bug that outputs incorrect Unicode category
  table for code point ranges.
* (categories.t): Rebuild it using the bug-fixed mkcategories.

This fixes the problem reported in the following post.
https://cygwin.com/ml/cygwin/2018-06/msg00248.html
2018-06-26 10:19:12 +02:00
Corinna Vinschen b14daac482 Revert "Remove -fno-builtin to allow gcc to inline functions such as fabs, floor, creal, imag."
This reverts commit c077b9de99.

Yet another accidental commit...
2018-06-26 10:17:04 +02:00
Jon Beniston c077b9de99 Remove -fno-builtin to allow gcc to inline functions such as fabs, floor, creal, imag. 2018-06-25 13:31:51 +02:00
Wilco Dijkstra 3baadb9912 Improve performance of sinf/cosf/sincosf
Here is the correct patch with both filenames and int cast fixed:

This patch is a complete rewrite of sinf, cosf and sincosf.  The new version
is significantly faster, as well as simple and accurate.
The worst-case ULP is 0.56072, maximum relative error is 0.5303p-23 over all
4 billion inputs.  In non-nearest rounding modes the error is 1ULP.

The algorithm uses 3 main cases: small inputs which don't need argument
reduction, small inputs which need a simple range reduction and large inputs
requiring complex range reduction.  The code uses approximate integer
comparisons to quickly decide between these cases - on some targets this may
be slow, so this can be configured to use floating point comparisons.

The small range reducer uses a single reduction step to handle values up to
120.0.  It is fastest on targets which support inlined round instructions.

The large range reducer uses integer arithmetic for simplicity.  It does a
32x96 bit multiply to compute a 64-bit modulo result.  This is more than
accurate enough to handle the worst-case cancellation for values close to
an integer multiple of PI/4.  It could be further optimized, however it is
already much faster than necessary.

Simple benchmark showing speedup factor on AArch64 for various ranges:

range	0.7853982	sinf	1.7	cosf	2.2	sincosf	2.8
range	1.570796	sinf	1.9	cosf	1.9	sincosf	2.7
range	3.141593	sinf	2.0	cosf	2.0	sincosf	3.5
range	6.283185	sinf	2.3	cosf	2.3	sincosf	4.2
range	125.6637	sinf	2.9	cosf	3.0	sincosf	5.1
range	1.1259e15	sinf	26.8	cosf	26.8	sincosf	45.2

ChangeLog:
2018-05-18  Wilco Dijkstra  <wdijkstr@arm.com>

        * newlib/libm/common/Makefile.in: Regenerated.
        * newlib/libm/common/Makefile.am: Add sinf.c, cosf.c, sincosf.c
        sincosf.h, sincosf_data.c. Add -fbuiltin -fno-math-errno to CFLAGS.
        * newlib/libm/common/math_config.h: Add HAVE_FAST_ROUND, HAVE_FAST_LROUND,
        roundtoint, converttoint, force_eval_float, force_eval_double, eval_as_float,
        eval_as_double, likely, unlikely.
        * newlib/libm/common/cosf.c: New file.
        * newlib/libm/common/sinf.c: Likewise.
        * newlib/libm/common/sincosf.h: Likewise.
        * newlib/libm/common/sincosf.c: Likewise.
        * newlib/libm/common/sincosf_data.c: Likewise.
        * newlib/libm/math/sf_cos.c: Add #if to build conditionally.
        * newlib/libm/math/sf_sin.c: Likewise.
        * newlib/libm/math/wf_sincos.c: Likewise.

--
2018-06-21 09:37:04 +02:00
Corinna Vinschen cfe8c6c504 Revert "Improve performance of sinf/cosf/sincosf"
This reverts commit fca80a9d1b.

Accidentally pushed a preliminary version
2018-06-21 09:36:39 +02:00
Jon Beniston b7d9d27b0e libm/common/s_round.c (round): Add cast for 16-bit CPUs 2018-06-21 09:31:13 +02:00
Wilco Dijkstra fca80a9d1b Improve performance of sinf/cosf/sincosf
This patch is a complete rewrite of sinf, cosf and sincosf.  The new version
is significantly faster, as well as simple and accurate.
The worst-case ULP is 0.56072, maximum relative error is 0.5303p-23 over all
4 billion inputs.  In non-nearest rounding modes the error is 1ULP.

The algorithm uses 3 main cases: small inputs which don't need argument
reduction, small inputs which need a simple range reduction and large inputs
requiring complex range reduction.  The code uses approximate integer
comparisons to quickly decide between these cases - on some targets this may
be slow, so this can be configured to use floating point comparisons.

The small range reducer uses a single reduction step to handle values up to
120.0.  It is fastest on targets which support inlined round instructions.

The large range reducer uses integer arithmetic for simplicity.  It does a
32x96 bit multiply to compute a 64-bit modulo result.  This is more than
accurate enough to handle the worst-case cancellation for values close to
an integer multiple of PI/4.  It could be further optimized, however it is
already much faster than necessary.

Simple benchmark showing speedup factor on AArch64 for various ranges:

range	0.7853982	sinf	1.7	cosf	2.2	sincosf	2.8
range	1.570796	sinf	1.9	cosf	1.9	sincosf	2.7
range	3.141593	sinf	2.0	cosf	2.0	sincosf	3.5
range	6.283185	sinf	2.3	cosf	2.3	sincosf	4.2
range	125.6637	sinf	2.9	cosf	3.0	sincosf	5.1
range	1.1259e15	sinf	26.8	cosf	26.8	sincosf	45.2

ChangeLog:
2018-06-18  Wilco Dijkstra  <wdijkstr@arm.com>

        * newlib/libm/common/Makefile.in: Regenerated.
        * newlib/libm/common/Makefile.am: Add sinf.c, cosf.c, sincosf.c
        sincosf.h, sincosf_data.c. Add -fbuiltin -fno-math-errno to CFLAGS.
        * newlib/libm/common/math_config.h: Add HAVE_FAST_ROUND, HAVE_FAST_LROUND,
        roundtoint, converttoint, force_eval_float, force_eval_double, eval_as_float,
        eval_as_double, likely, unlikely.
        * newlib/libm/common/cosf.c: New file.
        * newlib/libm/common/sinf.c: Likewise.
        * newlib/libm/common/sincosf.h: Likewise.
        * newlib/libm/common/sincosf.c: Likewise.
        * newlib/libm/common/sincosf_data.c: Likewise.
        * newlib/libm/math/sf_cos.c: Add #if to build conditionally.
        * newlib/libm/math/sf_sin.c: Likewise.
        * newlib/libm/math/wf_sincos.c: Likewise.

--
2018-06-19 09:44:28 +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 4a3d0a5a5d Fix issue with malloc_extend_top
- when calculating a correction to align next brk to page boundary,
  ensure that the correction is less than a page size
- if allocating the correction fails, ensure that the top size is
  set to brk + sbrk_size (minus any front alignment made)

Signed-off-by: Jeff Johnston <jjohnstn@redhat.com>
2018-05-29 10:16:48 -04:00
Matthias Kannwischer fcfea0ae2d fix llrint and lrint for 52 <= exponent <= 62 2018-05-29 15:59:48 +02:00
Freddie Chopin 3305f35570 Fix 32-bit overflow in mktime() when time_t is 64-bits long
When converting number of days since epoch (32-bits) to seconds,
calculations using 32-bit `long` overflow for years above 2038. Solve
this by casting number of days to `time_t` just before final
multiplication.

Signed-off-by: Freddie Chopin <freddie.chopin@gmail.com>
2018-05-29 15:27:03 +02:00
Jeff Johnston e928275566 Use _LDBL_EQ_DBL in nexttowardf.c
2018-05-07  Tom de Vries  <tom@codesourcery.com>

	* libm/common/nexttowardf.c: Use _LDBL_EQ_DBL instead of
	_LDBL_EQ_DOUBLE.
2018-05-07 12:22:12 -04:00
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
Corinna Vinschen 27652b608d strtod: Convert 64 bit double to 64 bit int during computation
The gdtoa implementation uses the type long, defined as Long, in lots
of code.  For historical reason newlib defines Long as int32_t instead.

This works fine, as long as floating point exceptions are not enabled.
The conversion to 32 bit int can lead to a FE_INVALID situation.

Example:

  const char *str = "121645100408832000.0";
  char *ptr;

  feenableexcept (FE_INVALID);
  strtod (str, &ptr);

This leads to the following situation in strtod

  double aadj;
  Long L;

  [...]
  L = (Long)aadj;

For instance, on x86_64 the code here is

  cvttsd2si %xmm0,%eax

At this point, aadj is 2529648000.0 in our example.  The conversion to
32 bit %eax results in a negative int value, thus the conversion is
invalid.  With feenableexcept (FE_INVALID), a SIGFPE is raised.

Fix this by always using 64 bit ints here if double is not a 32 bit type
to avoid this type of FP exceptions.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-04-09 11:31:04 +02:00
Corinna Vinschen 1ee6654e50 newlib: fix iswupper_l in !_MB_CAPABLE case
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-03-27 12:35:27 +02:00
Thomas Wolff fc59da00c8 comments to document struct caseconv_entry
explain design of compact (packed) struct caseconv_entry,
in case it needs to be modified for future Unicode versions
2018-03-26 12:01:50 +02:00
Thomas Wolff b49ce5af1b newlib: fix indentation in toulower
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-03-26 10:00:16 +02:00
Hakan Lindqvist 3ce38df8d1 Reduce qsort stack consumption
Classical function call recursion wastes a lot of stack space.
Each recursion level requires a full stack frame comprising all
local variables and additional space as dictated by the
processor calling convention.

This implementation instead stores the variables that are unique
for each recursion level in a parameter stack array, and uses
iteration to emulate recursion. Function call recursion is not
used until the array is full.

To ensure the stack consumption isn't worsened by this design, the
size of the parameter stack array is chosen to be similar to the
stack frame excluding the array. Each function call recursion level
can handle 8 iterative recursion levels.

Stack consumption will worsen when sorting tiny arrays that do not
need recursion (of 6 elements or less). It will be about equal for
up to 15 elements, and be an improvement for larger arrays. The best
case improvement is a stack size reduction down to about one quarter
of the stack consumption before the change.

A design where the parameter stack array is large enough for the
worst case recursion level was rejected because it would worsen
the stack consumption when sorting arrays smaller than about 1500
elements. The worst case is 31 levels on a 32-bit system.

A design with a dynamic parameter array size was rejected because
of limitations in some compilers.
2018-03-16 10:21:23 +01:00
Hakan Lindqvist 0045445ad6 Ensure qsort recursion depth is bounded
The qsort algorithm splits the input array in three parts. The
left and right parts may need further sorting. One of them is
sorted by recursion, the other by iteration. This update ensures
that it is the smaller part that is chosen for recursion.

By choosing the smaller part, each recursion level will handle
less than half the array of the previous recursion level. Hence
the recursion depth is bounded to be less than log2(n) i.e. 1
level per significant bit in the array size n.

The update also includes code comments explaining the algorithm.
2018-03-16 10:21:23 +01:00
Joel Sherrill 948db3e4b7 Correct prototypes of pthread_mutex_getprioceiling() and pthread_setschedparam() 2018-03-15 09:25:45 -05:00
Richard Earnshaw 0bb8697333 [arm] Fix syscalls.c for newlib embedded syscalls builds
Newlib has a build configuration where syscalls can be directly
embedded in the newlib library rather than relying on libgloss.

This configuration was broken recently by an update to the libgloss
support for Arm that was not propagated to the syscalls interface in
newlib itself.  This patch restores the build.  It's essentially a
copy of https://sourceware.org/ml/newlib/2018/msg00128.html but there
are some other minor cleanups and changes that I've made at the same
time.  None of those cleanups affect functionality.

The prototypes of the following functions have been updated: _link,
_sbrk, _getpid, _write, _swiwrite, _lseek, _swilseek, _read and
_swiread.

Signed-off-by: Richard Earnshaw <Richard.Earnshaw@arm.com>
2018-03-15 09:55:11 +00:00
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
Corinna Vinschen 134f93f313 ctype: align size of category bit fields to small targets needs
E.g. arm ABI requires -fshort-enums for bare-metal toolchains.
Given there are only 29 category enums, the compiler chooses an
8 bit enum type, so a size of 11 bits for the bitfield leads to
a compile time error:

  error: width of 'cat' exceeds its type
    enum category cat: 11;
                  ^~~

Fix this by aligning the size of the category members to byte
borders.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-03-14 11:38:24 +01:00
Corinna Vinschen edcf783dc2 Revert "ctype: align size of category bit fields to small targets needs"
This reverts commit e98d3eb3eb.

It has accidentally included some work in progress.
2018-03-14 11:36:06 +01:00
Thomas Wolff 44d90834fb fix/enhance Unicode table generation scripts
Scripts do not try to acquire Unicode data by best-effort magic anymore.
Options supported:
-h for help
-i to copy Unicode data from /usr/share/unicode/ucd first
-u to download Unicode data from unicode.org first
If (despite of -i or -u if given) the necessary Unicode files are not
available locally, table generation is skipped, but no error code is
returned, so not to obstruct the build process if called from a Makefile.
2018-03-14 10:44:32 +01:00
Corinna Vinschen e98d3eb3eb ctype: align size of category bit fields to small targets needs
E.g. arm ABI requires -fshort-enums for bare-metal toolchains.
Given there are only 29 category enums, the compiler chooses an
8 bit enum type, so a size of 11 bits for the bitfield leads to
a compile time error:

  error: width of 'cat' exceeds its type
    enum category cat: 11;
                  ^~~

Fix this by aligning the size of the category members to byte
borders.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-03-14 10:36:38 +01:00
Corinna Vinschen e186dc8661 towctrans_l: Always return a value from helper functions
touupper and toulower didn't return a value in all cases.  Worse,
this only broke Cygwin when building without optimization for debug
purposes.

Why GCC neglects to notice this is a mystery.

While at it, fix formatting.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-03-13 22:09:30 +01:00
Joel Sherrill 5b97e36239 rtems/.../dirent.h: Add alphasort() prototype 2018-03-13 09:11:47 -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
Thomas Wolff c8d96a96ea make target for explicit Unicode data tables generation
Run 'make unidata' in newlib target directory to generate Unicode
data tables for libc functions wcwidth, tow* and isw*.
2018-03-12 12:09:44 +01:00
Thomas Wolff a352730004 character data generation 2018-03-12 11:39:50 +01:00
Thomas Wolff 41f72ab4d7 use generated character data
The tow* functions use an included case conversion table which can be
generated from Unicode data.
The isw* functions use a character categories table (provided by
categories.c) which can be generated from Unicode data.
Delegation between current-locale and specific-locale-dependent functions
was reverted towards the generic locale-dependent functions (*_l.c);
this is however only relevant on systems with non-Unicode wide character
locales, thus not on Cygwin.
2018-03-12 11:39:42 +01:00
Thomas Wolff 3ccfb407af generated character category data, Unicode 10.0
Table categories.t and tag enumeration categories.cat provide
character class data for most of the isw* functions.
These data are generated from Unicode data.
2018-03-12 11:09:31 +01:00
Thomas Wolff 402daa2f80 generated case conversion data, Unicode 10.0
Table caseconv.t provides case conversion data for the tow* functions,
especially towupper and towlower.
These data are generated from Unicode data.
2018-03-12 11:09:31 +01:00
Thomas Wolff 37132125bc width data generation 2018-03-12 10:17:20 +01:00
Thomas Wolff 8e8fd6c849 use generated width data 2018-03-12 10:17:20 +01:00
Thomas Wolff 71291047e2 generated width data, Unicode 10.0
These tables provide character width properties for use by the
wcwidth/wcswidth functions. They are generated from Unicode.
2018-03-12 10:17:20 +01:00
Sebastian Huber f641474cb2 RTEMS: Use int for _CLOCKID_T_
Linux and FreeBSD use int as well.  In addition, this fixes an Ada
incompatiblity problem on 64-bit targets.  See also GCC:

  gcc/ada/libgnarl/s-osinte__rtems.ads

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-03-06 11:40:16 +01:00
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
Thomas Wolff f92f048528 Locale modifier @cjkwide to adjust ambiguous-width in non-CJK locales
Locale modifier @cjkwide makes Unicode "ambiguous width" characters
wide.  So ambiguous width characters can be enforced to have width 2
even in non-CJK locales. This gives e.g. users of "Powerline symbols"
the opportunity to adjust their width to the desired behaviour (and the
behaviour apparently expected by some tools) without having to set a CJK
locale and without losing consistence of terminal character width with
wcwidth/wcswidth locale width.
2018-03-05 17:15:12 +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 8329f4867b add forward declaration to __cxa_atexit to aeabi_atexit, to prevent warnings 2018-02-16 12:16:07 +01:00
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
Jaap de Wolff fdc5f52808 Add define _COMPILING_NEWLIB for arm to configure.host, as it is obviously needed
Signed-off-by: Jaap de Wolff <jaap@stretch.de-wolff.org>
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
Jon Beniston b8272e3b8d Fix vprintf and vfscanf for GCC PR 14577 2018-02-01 13:28:28 +01:00
Sebastian Huber 1658a57715 epiphany: Additional setjmp() and longjmp() syms
At least with Binutils 2.30 and GCC 7.3 we need symbol definitions
without the leading underscore.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-01-31 08:17:19 +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
Orlando Arias b7e0f286a2 Fix syntax error in exit.c
This patch fixes a syntax error in exit.c that was introduced during the
ANSI-fication of newlib. The patch fixes a compile-time issue that arises when
newlib is configured with the --enable-lite-exit feature.
2018-01-19 19:58:10 +01:00
Jeff Johnston fffd2770db Bump release to 3.0.0 for yearly snapshot
- major release required due to removal of K&R support
2018-01-18 13:07:45 -05:00
Kito Cheng cba678ba02 RISC-V: Fix alignment issue in sigjmp_buf 2018-01-18 09:21:10 +01:00
Yaakov Selkowitz 4cd1905add ansification: remove ansidecl.h from makedoc
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:33 -06:00
Yaakov Selkowitz 7bfa24c495 ansification: fix makedoc for ANSI C
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:32 -06:00
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 0403b9c8c4 ansification: remove _VOID_PTR
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:14 -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
Ivan Grokhotkov 1d01586b62 newlib: fvprintf: fix get_arg for !_MB_CAPABLE
Code path for _MB_CAPABLE scans for the '%' character and advances
'fmt' pointer past '%'. Code path for !_MB_CAPABLE leaved fmt pointing
to '%', which caused the state machine to go from START to DONE state
immediately.
2018-01-09 09:52:18 +01:00
Alexander Fedotov fcd33916ac fix incompatible pointer type for va_list in nano versions of printf and scanf for target like PowerPC 2018-01-08 11:05:05 +01:00
Jim Wilson a6633677b9 RISC-V: Add nanosleep functionality 2017-12-26 12:24:45 -08:00
Corinna Vinschen 6e5b39940a newlib: ftello{64}: Handle appending stream without fflushing
Neither upstream FreeBSD nor glibc ever call fflush from ftell
and friends.  In border cases it has the tendency to return
wrong or unexpected values, for instance on block devices.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-12-18 20:17:51 +01:00
Corinna Vinschen dc2d175721 newlib: ftello{64}: Fix type of returned value
Especially don't just use -1L since _off_t/_off64_t are not
guaranteed to be of type long.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-12-18 20:15:27 +01:00
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
Jim Wilson c874f1145f newlib: Don't do double divide in powf.
* Use 0.0f instead of 0.0 in divide.
2017-12-13 11:33:19 +01:00
Jim Wilson c338bc2255 Don't call double rint from float powf.
Updated patch to use 0.0f in addition to calling rintf.

Tested same way as before, with a testcase that triggers the code and
make check.

OK?

	newlib/
	* libm/math/wf_pow.c (powf): Call rintf instead of rint.  Use 0.0f
	for compare.
2017-12-13 11:03:10 +01:00
Jim Wilson efce18d754 Update MAINTAINERS file email address.
To update my email address to my current employer.  Specifix died quite a while
ago, and I've had two jobs in the interim.

	newlib/
	* MAINTAINERS: Update my email address.
2017-12-12 13:50:30 +01:00
Jon Turney 2ce4e1e5ad makedoc: warn about some obsolete and deprecated commands
To follow up the thread starting at [1], since all uses of TRAD_SYNOPSIS
have been removed, and all uses of ANSI_SYNOPSIS have been renamed to
SYNOPSIS, we can now warn about the use of these.

[1] https://sourceware.org/ml/newlib/2017/msg01182.html

Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
2017-12-08 12:09:03 +00:00
Jon Turney 06bd0ecc8d makedoc: exit with non-zero status on error
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
2017-12-07 11:54:57 +00:00
Jon Turney c006fd459f makedoc: make errors visible
Discard QUICKREF sections, rather than writing them to stderr
Discard MATHREF sections, rather than discarding as an error
Pass NOTES sections through to texinfo, rather than discarding as an error
Don't redirect makedoc stderr to .ref file
Remove makedoc output on error
Remove .ref files from CLEANFILES
Regenerate Makefile.ins

Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
2017-12-07 11:54:11 +00:00
Corinna Vinschen 67e628fa33 newlib: vfwscanf: fix negation bug in %[ conversion
Old BSD bug:  While ^ is recognized and the set of matching characters
is negated, the code neglects to increment the pointer pointing to the
matching characters.  Thus, on a negation expression like %[^xyz], the
matching doesn't only stop at x, y, or z, but incorrectly also on ^.

Fix this by setting the start pointer after recognizing the ^.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-12-04 17:05:11 +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
Corinna Vinschen b7b6b42cd4 newlib: vfscanf: Implement %l[
Just as %lc and %ls, this is only enabled on ELIX_LEVEL >= 2.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-12-01 17:53:59 +01:00
Corinna Vinschen a49209d2bc newlib: vf[w]scanf: Fix conversion multibyte <-> wchar_t
* vfscanf: per POSIX, if the target type is wchar_t, the width is
  counted in (multibyte) characters, not in bytes.

* vfscanf: Handle UTF-8 multibyte sequences converted to surrogate
  pairs on UTF-16 systems.

* vfwscanf: Don't count high surrogates in input against field width
  counting.  Per POSIX, input is

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-12-01 17:18:26 +01:00
Corinna Vinschen 9638c07527 newlib: vf[w]scanf: Drop width computation mixup
The width value keeps the maximum field width.  This is the maximum
field width of the *input*.  It's *never* to be used in conjunction
with the number of bytes or characters written to the output argument.

However, especially in vfwscanf, the code is partially taken from
NetBSD which erroneously subtracts the number of multibyte chars
written to the argument from the width variable, thus potentially
subtracting up to MB_CUR_MAX from width for a single character in
the input stream.

To make matters worse, the previous patch adding %m added basically
the same mistake for 'c' type input.

Fix it.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-12-01 13:47:26 +01:00
Yaakov Selkowitz 70afa0c7b3 HOWTO: remove reference to TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:54 -06:00
Yaakov Selkowitz 9f369d3c8d mathfp: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:54 -06:00
Yaakov Selkowitz ec4c079f4b math: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:53 -06:00
Yaakov Selkowitz 59822e777f libm/machine: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:53 -06:00
Yaakov Selkowitz ac8b60bdd1 complex: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:53 -06:00
Yaakov Selkowitz 3312f960a7 libm/common: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:53 -06:00
Yaakov Selkowitz 571ff42ae4 unix: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:53 -06:00
Yaakov Selkowitz 5aa2434de0 time: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:53 -06:00
Yaakov Selkowitz adfde9d773 sys: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:52 -06:00
Yaakov Selkowitz 352c8f2f0d string: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:52 -06:00
Yaakov Selkowitz a38fc79ee9 stdlib: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:52 -06:00
Yaakov Selkowitz a60026253d stdio64: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:51 -06:00
Yaakov Selkowitz c7ef9668cf stdio: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:51 -06:00
Yaakov Selkowitz b88cfbc1e5 signal: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:51 -06:00
Yaakov Selkowitz bf3a554bc6 search: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:51 -06:00
Yaakov Selkowitz 35d2d2fe2e reent: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:51 -06:00
Yaakov Selkowitz aa06fa01dc posix: remove TRAD_SYNOPSIS 2017-12-01 03:41:50 -06:00
Yaakov Selkowitz 191b4f35bc misc: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -06:00
Yaakov Selkowitz 1f1e477554 powerpc: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -06:00
Yaakov Selkowitz ddd22ee069 nds32: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -06:00
Yaakov Selkowitz 4e8c64b928 microblaze: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -06:00
Yaakov Selkowitz 59235deeec locale: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -06:00
Yaakov Selkowitz 03973c19e9 iconv: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -06:00
Yaakov Selkowitz 9db7609592 ctype: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:50 -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
Corinna Vinschen d43863f569 newlib: vf[w]scanf: Implement POSIX %m modifier
* The new code is guarded with _WANT_IO_POSIX_EXTENSIONS, but
  this is automatically enabled with _WANT_IO_C99_FORMATS for now.

* vfscanf neglects to implement %l[, so %ml[ is not implemented yet
  either.

* Sidenote: vfwscanf doesn't allow ranges in %[ yet.  Strictly this
  is allowed per POSIX, but it differes from vfscanf as well as from
  glibc.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-30 21:50:23 +01:00
Corinna Vinschen 7161622514 newlib: vfwscanf: fix miscomputation of max field width in %[] case
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-30 21:02:38 +01:00
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
Corinna Vinschen 0fd2c9bd12 newlib: vf[w]scanf: add validity checks
POSIX requires that directive characters appear in a certain sequence:

1. '%' or '%<n>$'
2. optional '*'
3. optional field width digits
4. optional 'm' (not yet implemented)
5. optional length modifier ('l', 'L', 'll', 'h', 'hh', 'j', 't', 'z')
6. conversion specifier ('d', 's', etc)

Add a few basic validity checks to that effect, otherwise reject
directive as match failure.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-30 11:55:27 +01:00
Corinna Vinschen 31f11d0572 newlib: vf[w]scanf: Use SIZE_MAX rather than ~0
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-30 11:41:36 +01:00
Corinna Vinschen 5e4a1c9c97 newlib: vfscanf: fix formatting
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-30 11:41:36 +01:00
Corinna Vinschen 2e328edee4 newlib: vf[w]scanf: Only return from a single point to simplify cleanup
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-30 11:41:36 +01:00
Yaakov Selkowitz 8a94bca694 string: add wmempcpy
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-30 04:06:49 -06:00
Sebastian Huber dadc9e7e4a RTEMS: Add semaphore <sys/lock.h> functions
Declare semaphore try wait and post binary functions.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-11-30 07:00:45 +01:00
Sebastian Huber 5a2ab9d55e RTEMS: Timed wait by ticks <sys/lock.h> functions
Declare timed wait by ticks functions.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-11-30 07:00:45 +01:00
Sebastian Huber 186166f67a RTEMS: Add set/get name <sys/lock.h> functions
Add inline functions to set/get the name.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-11-30 07:00:45 +01:00
Yaakov Selkowitz 6f84ee8105 ssp: add build infrastructure
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:46 -06:00
Yaakov Selkowitz 192de5a349 ssp: add documentation
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:45 -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 0a5dfdbd1b ssp: add APIs for Stack Smashing Protection
Compiling with any of the -fstack-protector* flags requires the
__stack_chk_guard data import (which needs to be initialized) and the
__stack_chk_fail{,_local} functions.  While GCC's own libssp can provide
these, it is better that we provide these ourselves.  The implementation
is custom due to being OS-specific.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-11-29 11:25:37 -06:00
Corinna Vinschen 1bbdb3c953 newlib: [w]scanf: Fix behaviour on matching failure
The special handling of %\0 in [w]scanf is flawed.  It's just a
matching failure and should be handled as such.  scanf also
fakes an int input value on %X with X being an invalid conversion
char.  This is also just a matching failure and should be handled
the same way as %\0.

There's no indication of the reason for this "disgusting
backwards compatibility hacks" in the logs, given this
code made it into newlib before setting up the CVS repo.

Just handle these cases identically as matching failures.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-11-29 15:01:30 +01:00
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
Sebastian Huber 6480987f3a RTEMS: Add missing __getreent() to crt0
Default implementation was removed for RTEMS by
b1a388799d.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-11-20 10:12:18 +01:00
Sebastian Huber 0e3e375377 RTEMS: Add missing functions to crt0
This helps to get some more features from libstdc++.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-11-20 08:53:30 +01:00
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
Florian Schmidt 9cf0c4a012 newlib/libc/stdlib/realloc.c: fix variable name
The variable doesn't follow the convention of having the same name as
the function it's bundled with. Furthermore, it clashes with the
variable of the same name in newlib/libc/stdlib/calloc.c.

Signed-off-by: Florian Schmidt <florian.schmidt@neclab.eu>
2017-11-14 10:18:30 +01:00
Joel Sherrill b1a388799d newlib/.../getreent.c: Allow to be provided by host and do so for RTEMS
RTEMS provides the option to have a global or per-thread reentrancy
as part of application configuration. As part of this, RTEMS provides
the implementation of __getreent() as appropriate. Allow the target
to determine if this method is present in libc.a.
2017-11-13 10:19:23 +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
Joel Sherrill 076ce7098f newlib/configure.host: Remove obsolete definition of _I386MACH_ALLOW_HW_INTERRUPTS
The *-*-rtems* targets defined this even though the conditional
was no longer present in i386/setjmp.S.
2017-11-02 09:27:15 +01:00
Sebastian Huber ce189d8afe RTEMS: Remove internal timecounter API
Change copyright.  Original BSD content moved to
<machine/_kernel_time.h>.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-26 08:47:21 +02:00
Szabolcs Nagy 56e494c074 fix internal __ieee754_expf and __ieee754_logf calls
The recently added new math code inlines error handling instead of using
error handling wrappers around __ieee754* internal symbols, and thus the
__ieee754* symbols are no longer provided.

However __ieee754_expf and __ieee754_logf are used in the implementation
of a number of other math functions.  These symbols are safe to redirect
to the external expf and logf symbols, because those names are always
reserved when single precision math functions are reserved and the
additional error handling code is either not reached or there will be
an error in the final result that will override an internal spurious
errno setting.

For consistency all of __ieee754_expf, __ieee754_logf and __ieee754_powf
are redirected using a macro.
2017-10-20 11:19:02 +02:00
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 c165a27c01 RTEMS: Fix _PTHREAD_MUTEX_INITIALIZER
Add missing braces around initializer.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-13 08:07:13 +02:00
Michael Haubenwallner 15de9da0b9 Fix typo with newlib-long-time_t default value.
Fix typo for newlib-long-time_t to leave newlib-nano-malloc alone.
2017-10-09 17:55:19 +02:00
Sebastian Huber 3a79700c2d RTEMS: Make pthread_mutex_t self-contained
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-05 14:56:13 +02:00
Sebastian Huber 55c5dda9b5 RTEMS: Make pthread_cond_t self-contained
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-05 14:56:13 +02:00
Sebastian Huber d902eef093 RTEMS: Make pthread_rwlock_t self-contained
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-05 14:56:13 +02:00
Sebastian Huber 9187bb23a0 RTEMS: Make pthread_barrier_t self-contained
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-05 14:56:13 +02:00
Sebastian Huber 8253c240cb RTEMS: Make sem_t self-contained
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-05 14:56:12 +02:00
Sebastian Huber 4fef7312b3 RTEMS: Optimize pthread_once_t
Reduce size of pthread_once_t and make it zero-initialized.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-10-05 14:56:12 +02:00
Brian Inglis f9b24fad7c newlib/libm/complex/cargl.c change imag() real() to cimagl() creall() 2017-09-19 15:36:12 -05:00
Sebastian Huber 1592a0be0c Fix warnings and documentation in strnstr.c
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-09-19 15:35:09 -05:00
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
Sebastian Huber ad45b86533 Remove harmful casts in gmtime_r()
In case time_t is long, then the cast to long is a nop.  In case time_t
is __int_least64_t, then the cast to long may truncate the value before
the division.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-09-07 15:39:34 +02:00
Sebastian Huber f9205f1d47 Let RTEMS provide clock()
Newlib uses _times_r() in clock().  The problem is that the _times_r()
clock frequency is defined by sysconf(_SC_CLK_TCK).  The clock frequency
of clock() is the constant CLOCKS_PER_SEC.

FreeBSD uses getrusage() for clock().  Since RTEMS has only one process,
the implementation can be simplified.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-09-07 07:41:07 +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
Corinna Vinschen 192986ab03 newlib: string/Makefile.am (CHEWOUT_FILES): Add strnstr.def
Regenerate strings/Makefile.in

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-08-30 16:48:55 +02:00
Corinna Vinschen 5fc315b597 newlib: strnstr: drop traditional synopisis
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-08-30 16:45:36 +02:00
Sichen Zhao 42885ea4b8 Add man page entry for strnstr.c. 2017-08-30 15:10:07 +02:00
Sichen Zhao f22054c94d Modify strnstr.c. 2017-08-30 15:08:58 +02:00
Sebastian Huber f1863582ed Fix compile error due to new strnstr()
Remove local strnstr() implementation to fix compile error:

newlib/libc/iconv/lib/aliasesi.c:53:8: error: conflicting types for 'strnstr'
 _DEFUN(strnstr, (haystack, needle, length),
        ^
In file included from newlib/libc/iconv/lib/aliasesi.c:29:0:
newlib/libc/include/string.h:125:10:
note: previous declaration of 'strnstr' was here
 char    *strnstr(const char *, const char *, size_t) __pure;
          ^~~~~~~

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-08-28 17:31:52 +02:00
Corinna Vinschen c070326d31 newlib: rebuild string/Makefile.in
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-08-25 18:00:46 +02:00
Sichen Zhao c206d04422 Port strnstr.c to newlib. 2017-08-25 18:00:46 +02:00
Sichen Zhao 3437665ac8 Import strnstr.c from FreeBSD. 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
Sebastian Huber 524eb4dc29 RTEMS: Use __uint64_t for _CLOCK_T_
This addresses:

https://devel.rtems.org/ticket/2135

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-08-25 14:25:42 +02:00
Sebastian Huber 7b2c362190 Make _CLOCK_T_ system configurable
Let systems optionally provide the _CLOCK_T_ type via
<machine/_types.h>.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-08-25 14:25:42 +02:00
Brian Inglis 406bd10fb4 newlib/libc/time/strptime.c(strptime_l) add %F %s support for strptime 2017-08-25 14:04:22 +02:00
Kito Cheng bd86e9de75 Add myself to RISC-V Port Maintainer 2017-08-21 11:09:15 +02:00
Kito Cheng 6864c08b94 Change license to FreeBSD License for RISC-V
- For prevent confuse about what BSD license variant we used, 2- or
   3-clause license, we change the license to FreeBSD license to make
   it unambiguously refers to the 2-clause license.
2017-08-21 11:08:54 +02:00
Ken Brown f665b1cef3 cygwin: Implement renameat2
Define the RENAME_NOREPLACE flag in <cygwin/fs.h> as defined on Linux
in <linux/fs.h>.  The other RENAME_* flags defined on Linux are not
supported.
2017-08-19 18:06:49 +02:00
Kito Cheng 7040b2de08 Add RISC-V port for libm
Contributor list:
    - Michael Neilly  <mneilly@yahoo.com>
    - Kito Cheng  <kito.cheng@gmail.com>
2017-08-17 12:54:56 -04:00
Eric Blake 979d467ff6 headers: avoid bareword attributes
Always use the __-decorated form of an attribute name in public
headers, as the bareword form is in the user's namespace, and we
don't want compilation to break just because the user defines the
bareword to mean something else.

Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-17 07:10:03 -05:00
Kito Cheng 363dbb9e44 Add RISC-V port for newlib
Contributor list:
    - Andrew Waterman  <andrew@sifive.com>
    - Palmer Dabbelt  <palmer@dabbelt.com>
    - Kito Cheng  <kito.cheng@gmail.com>
    - Scott Beamer  <sbeamer@eecs.berkeley.edu>
2017-08-16 18:00:58 -04:00
Corinna Vinschen 9d602b98f8 newlib: regenerate libc/stdlib/Makefile.am
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-08-11 10:17:16 +02:00
Ken Brown d7821c045e Define sigsetjmp/siglongjmp only if __POSIX_VISIBLE 2017-08-07 16:07:46 +02:00
Sebastian Huber b0f271d1db Proper locking for getchar() and putchar()
Add internal inline functions _getchar_unlocked() and
_putchar_unlocked() if __CUSTOM_FILE_IO__ is not defined.  These
functions get _REENT only once.  Use them for getchar_unlocked() and
putchar_unlocked().  Define getchar() and putchar() to these unlocked
internal functions if __SINGLE_THREAD__ is defined, otherwise use the
external functions to use proper locking of the FILE object.

Assumes that __SINGLE_THREAD__ is not defined if __CYGWIN__ is defined.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-08-07 07:54:58 +02:00
Aditya Upadhyay a1c2491f70 Importing wcstoumax inttypes method from FreeBSD. 2017-08-02 13:02:26 +02:00
Aditya Upadhyay 88abc0958b Importing wcstoimax inttypes method from FreeBSD. 2017-08-02 13:02:26 +02:00
Aditya Upadhyay fd1981a7df Importing strtoumax inttypes method from FreeBSD. 2017-08-02 13:02:26 +02:00
Aditya Upadhyay 910cc30c10 Importing strtoimax inttypes method from FreeBSD. 2017-08-02 13:02:26 +02:00
Yaakov Selkowitz 4aaec3cb88 Add elf.h to newlib
This is copied from musl (MIT license).  This is newer and more thorough
than that of FreeBSD currently shipped only on Cygwin.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-08-02 01:18:55 -05:00
Aditya Upadhyay 0e0900cb40 Importing catanl long double complex method from NetBSD. 2017-07-28 20:36:09 +02:00
Aditya Upadhyay 124ccc500e Fixing HUGE_VALF to HUGE_VALL. 2017-07-28 20:30:30 +02:00
Sebastian Huber 7dad0e441a stdio: Fix make rule override
The Makefile.am contained two rules for the vfwscanf object.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-07-28 15:05:54 +02:00
Corinna Vinschen a7a7980f7b newlib: regenerate stdlib/Makefile.in
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-07-28 12:44:45 +02:00
Aditya Upadhyay 4b2fc8c55e Importing imaxdiv inttypes method from FreeBSD. 2017-07-28 12:23:10 +02:00
Aditya Upadhyay a785f0f69a Importing imaxabs inttypes method from FreeBSD. 2017-07-28 12:23:08 +02:00
Corinna Vinschen 8322a87c16 cygwin: Set __STDC_ISO_10646__ to Unicode 5.2 value
Now that XP is not supported anymore we can freely do that.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-07-26 11:49:58 +02:00
Richard Earnshaw d6cac3e1da [arm] Fix strcpy for unified syntax on ARMv4t thumb.
ARMv4t does not support mov between two low registers.  Now we use
unified syntax mov instructions need converting to movs.
2017-07-21 11:23:27 +01:00
Jozef Lawrynowicz 25138cc2a6 MSP430: Define __BUFSIZ__ as 256 to prevent default of 1024 being used 2017-07-20 16:18:54 +02:00
Ian Tessier via newlib 4bce7ecbe1 arm: Update strcpy.c to use UAL syntax.
With this change the arm platform can now be fully compiled with Clang.

Tested by comparing the output with GCC 4.8.2, and Clang 4.0, using a
variety of arches, big/little endianness, and arm/thumb mode to verify
the generated assembly output matches between GCC vs Clang with UAL, and
also GCC with UAL vs GCC with non-UAL, for all preprocessor code blocks.

The only difference found is an extra nop at the end of the function
when compiled with GCC using armv7-a/thumb/little-endian/-O2 compared to
Clang. The nop is not emitted when compiled in big-endian mode.
2017-07-20 16:18:29 +02:00
Sebastian Huber a3617d7bde Synchronize RTEMS <sys/bitset.h> with FreeBSD
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-07-12 08:04:45 +02:00
Sebastian Huber 870dc91de6 Add myself to OS Port Maintainers (RTEMS) 2017-07-10 09:48:50 +02:00
Sebastian Huber 1d49ce4d6b Synchronize RTEMS <sys/bitset.h> with FreeBSD
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-07-10 07:18:10 +02:00
David Macek bf61b38d98 Rename __in and __out in headers to avoid collision with Windows APIs
* string.h: Local variables in expansion of strdupa and strndupa
* sys/wait.h: Fields in anonymous union in expansion of __wait_status_to_int
2017-07-07 16:37:44 +02:00
Aditya Upadhyay be3ca39474 Fixed warnings for some long double complex methods 2017-07-05 14:40:02 +02:00
Sebastian Huber 461152e4eb Add ffsl(), ffsll(), fls(), flsl(), flsll()
Use compiler builtin for ffs().  Remove duplicate implementation from
Cygwin.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-07-05 13:49:48 +02:00
Sebastian Huber 2390e71a42 Synchronize <strings.h> with latest FreeBSD
Include <strings.h> in <string.h> if __BSD_VISIBLE like on FreeBSD.
Remove redundant declarations from <string.h>.  Make ffsl(), ffsll(),
strncasecmp(), strcasecmp_l(), and strncasecmp_l() visible via
__BSD_VISIBLE instead of __GNU_VISIBLE.  Add fls(), flsl(), and flsll()
to <strings.h> if __BSD_VISIBLE.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-07-05 13:49:48 +02:00
Sebastian Huber d736941a51 Implement bzero() via memset()
Use memset() to implement bzero() to profit from machine-specific
memset() optimizations.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-07-05 13:49:48 +02:00
Yaakov Selkowitz e4ee6c9aaf Feature test macros overhaul: unistd.h, part 2
This fixes commit f70aad3de4 as well as some
other functions which were never properly guarded.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-06-30 10:48:23 -05:00
Sebastian Huber a254c82486 Add --enable-newlib-global-stdio-streams
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-30 07:45:16 +02:00
Sebastian Huber d2e256a36a Enable _REENT_GLOBAL_STDIO_STREAMS for RTEMS
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-30 07:45:16 +02:00
Sebastian Huber 668a4c8722 Introduce _REENT_GLOBAL_STDIO_STREAMS
In Newlib, the stdio streams are defined to thread-specific pointers
_reent::_stdin, _reent::_stdout and _reent::_stderr.  In case
_REENT_SMALL is not defined, then these pointers are initialized via
_REENT_INIT_PTR() or _REENT_INIT_PTR_ZEROED() to thread-specific FILE
objects provided via _reent::__sf[3].  There are two problems with this
(at least in case of RTEMS).

(1) The thread-specific FILE objects are closed by _reclaim_reent().
This leads to problems with language run-time libraries that provide
wrappers to the C/POSIX stdio streams (e.g.  C++ and Ada), since they
use the thread-specific FILE objects of the initialization thread.  In
case the initialization thread is deleted, then they use freed memory.

(2) Since thread-specific FILE objects are used with a common output
device via file descriptors 0, 1 and 2, the locking at FILE object level
cannot ensure atomicity of the output, e.g. a call to printf().

Introduce a new Newlib configuration option _REENT_GLOBAL_STDIO_STREAMS
to enable the use of global stdio FILE objects.

As a side-effect this reduces the size of struct _reent by more than
50%.

The _REENT_GLOBAL_STDIO_STREAMS should not be used without
_STDIO_CLOSE_PER_REENT_STD_STREAMS.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-30 07:45:16 +02:00
Sebastian Huber 79cc9cb8f3 Add stdin_init(), stdout_init() and stderr_init()
This simplifies further changes in this area.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-30 07:45:15 +02:00
Sebastian Huber b70c0bc706 Remove superfluous parameter from std()
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-30 07:45:15 +02:00
Wilco Dijkstra c86063bdc0 Optimized memcmp
This is an optimized memcmp for AArch64.  This is a complete rewrite
using a different algorithm.  The previous version split into cases
where both inputs were aligned, the inputs were mutually aligned and
unaligned using a byte loop.  The new version combines all these cases,
while small inputs of less than 8 bytes are handled separately.

This allows the main code to be sped up using unaligned loads since
there are now at least 8 bytes to be compared.  After the first 8 bytes,
align the first input.  This ensures each iteration does at most one
unaligned access and mutually aligned inputs behave as aligned.
After the main loop, process the last 8 bytes using unaligned accesses.

This improves performance of (mutually) aligned cases by 25% and
unaligned by >500% (yes >6 times faster) on large inputs.

ChangeLog:
2017-06-28  Wilco Dijkstra  <wdijkstr@arm.com>

        * newlib/libc/machine/aarch64/memcmp.S (memcmp):
        Rewrite of optimized memcmp.

GLIBC benchtests/bench-memcmp.c performance comparison for Cortex-A53:

Length    1, alignment  1/ 1:		153%
Length    1, alignment  1/ 1:		119%
Length    1, alignment  1/ 1:		154%
Length    2, alignment  2/ 2:		121%
Length    2, alignment  2/ 2:		140%
Length    2, alignment  2/ 2:		121%
Length    3, alignment  3/ 3:		105%
Length    3, alignment  3/ 3:		105%
Length    3, alignment  3/ 3:		105%
Length    4, alignment  4/ 4:		155%
Length    4, alignment  4/ 4:		154%
Length    4, alignment  4/ 4:		161%
Length    5, alignment  5/ 5:		173%
Length    5, alignment  5/ 5:		173%
Length    5, alignment  5/ 5:		173%
Length    6, alignment  6/ 6:		145%
Length    6, alignment  6/ 6:		145%
Length    6, alignment  6/ 6:		145%
Length    7, alignment  7/ 7:		125%
Length    7, alignment  7/ 7:		125%
Length    7, alignment  7/ 7:		125%
Length    8, alignment  8/ 8:		111%
Length    8, alignment  8/ 8:		130%
Length    8, alignment  8/ 8:		124%
Length    9, alignment  9/ 9:		160%
Length    9, alignment  9/ 9:		160%
Length    9, alignment  9/ 9:		150%
Length   10, alignment 10/10:		170%
Length   10, alignment 10/10:		137%
Length   10, alignment 10/10:		150%
Length   11, alignment 11/11:		160%
Length   11, alignment 11/11:		160%
Length   11, alignment 11/11:		160%
Length   12, alignment 12/12:		146%
Length   12, alignment 12/12:		168%
Length   12, alignment 12/12:		156%
Length   13, alignment 13/13:		167%
Length   13, alignment 13/13:		167%
Length   13, alignment 13/13:		173%
Length   14, alignment 14/14:		167%
Length   14, alignment 14/14:		168%
Length   14, alignment 14/14:		168%
Length   15, alignment 15/15:		168%
Length   15, alignment 15/15:		173%
Length   15, alignment 15/15:		173%
Length    1, alignment  0/ 0:		134%
Length    1, alignment  0/ 0:		127%
Length    1, alignment  0/ 0:		119%
Length    2, alignment  0/ 0:		94%
Length    2, alignment  0/ 0:		94%
Length    2, alignment  0/ 0:		106%
Length    3, alignment  0/ 0:		82%
Length    3, alignment  0/ 0:		87%
Length    3, alignment  0/ 0:		82%
Length    4, alignment  0/ 0:		115%
Length    4, alignment  0/ 0:		115%
Length    4, alignment  0/ 0:		122%
Length    5, alignment  0/ 0:		127%
Length    5, alignment  0/ 0:		119%
Length    5, alignment  0/ 0:		127%
Length    6, alignment  0/ 0:		103%
Length    6, alignment  0/ 0:		100%
Length    6, alignment  0/ 0:		100%
Length    7, alignment  0/ 0:		82%
Length    7, alignment  0/ 0:		91%
Length    7, alignment  0/ 0:		87%
Length    8, alignment  0/ 0:		111%
Length    8, alignment  0/ 0:		124%
Length    8, alignment  0/ 0:		124%
Length    9, alignment  0/ 0:		136%
Length    9, alignment  0/ 0:		136%
Length    9, alignment  0/ 0:		136%
Length   10, alignment  0/ 0:		136%
Length   10, alignment  0/ 0:		135%
Length   10, alignment  0/ 0:		136%
Length   11, alignment  0/ 0:		136%
Length   11, alignment  0/ 0:		136%
Length   11, alignment  0/ 0:		135%
Length   12, alignment  0/ 0:		136%
Length   12, alignment  0/ 0:		136%
Length   12, alignment  0/ 0:		136%
Length   13, alignment  0/ 0:		135%
Length   13, alignment  0/ 0:		136%
Length   13, alignment  0/ 0:		136%
Length   14, alignment  0/ 0:		136%
Length   14, alignment  0/ 0:		136%
Length   14, alignment  0/ 0:		136%
Length   15, alignment  0/ 0:		136%
Length   15, alignment  0/ 0:		136%
Length   15, alignment  0/ 0:		136%
Length    4, alignment  0/ 0:		115%
Length    4, alignment  0/ 0:		115%
Length    4, alignment  0/ 0:		115%
Length   32, alignment  0/ 0:		127%
Length   32, alignment  7/ 2:		395%
Length   32, alignment  0/ 0:		127%
Length   32, alignment  0/ 0:		127%
Length    8, alignment  0/ 0:		111%
Length    8, alignment  0/ 0:		124%
Length    8, alignment  0/ 0:		124%
Length   64, alignment  0/ 0:		128%
Length   64, alignment  6/ 4:		475%
Length   64, alignment  0/ 0:		131%
Length   64, alignment  0/ 0:		134%
Length   16, alignment  0/ 0:		128%
Length   16, alignment  0/ 0:		119%
Length   16, alignment  0/ 0:		128%
Length  128, alignment  0/ 0:		129%
Length  128, alignment  5/ 6:		475%
Length  128, alignment  0/ 0:		130%
Length  128, alignment  0/ 0:		129%
Length   32, alignment  0/ 0:		126%
Length   32, alignment  0/ 0:		126%
Length   32, alignment  0/ 0:		126%
Length  256, alignment  0/ 0:		127%
Length  256, alignment  4/ 8:		545%
Length  256, alignment  0/ 0:		126%
Length  256, alignment  0/ 0:		128%
Length   64, alignment  0/ 0:		171%
Length   64, alignment  0/ 0:		171%
Length   64, alignment  0/ 0:		174%
Length  512, alignment  0/ 0:		126%
Length  512, alignment  3/10:		585%
Length  512, alignment  0/ 0:		126%
Length  512, alignment  0/ 0:		127%
Length  128, alignment  0/ 0:		129%
Length  128, alignment  0/ 0:		128%
Length  128, alignment  0/ 0:		129%
Length 1024, alignment  0/ 0:		125%
Length 1024, alignment  2/12:		611%
Length 1024, alignment  0/ 0:		126%
Length 1024, alignment  0/ 0:		126%
Length  256, alignment  0/ 0:		128%
Length  256, alignment  0/ 0:		127%
Length  256, alignment  0/ 0:		128%
Length 2048, alignment  0/ 0:		125%
Length 2048, alignment  1/14:		625%
Length 2048, alignment  0/ 0:		125%
Length 2048, alignment  0/ 0:		125%
Length  512, alignment  0/ 0:		126%
Length  512, alignment  0/ 0:		127%
Length  512, alignment  0/ 0:		127%
Length 4096, alignment  0/ 0:		125%
Length 4096, alignment  0/16:		125%
Length 4096, alignment  0/ 0:		125%
Length 4096, alignment  0/ 0:		125%
Length 1024, alignment  0/ 0:		126%
Length 1024, alignment  0/ 0:		126%
Length 1024, alignment  0/ 0:		126%
Length 8192, alignment  0/ 0:		125%
Length 8192, alignment 63/18:		636%
Length 8192, alignment  0/ 0:		125%
Length 8192, alignment  0/ 0:		125%
Length   16, alignment  1/ 2:		317%
Length   16, alignment  1/ 2:		317%
Length   16, alignment  1/ 2:		317%
Length   32, alignment  2/ 4:		395%
Length   32, alignment  2/ 4:		395%
Length   32, alignment  2/ 4:		398%
Length   64, alignment  3/ 6:		475%
Length   64, alignment  3/ 6:		475%
Length   64, alignment  3/ 6:		477%
Length  128, alignment  4/ 8:		479%
Length  128, alignment  4/ 8:		479%
Length  128, alignment  4/ 8:		479%
Length  256, alignment  5/10:		543%
Length  256, alignment  5/10:		539%
Length  256, alignment  5/10:		543%
Length  512, alignment  6/12:		585%
Length  512, alignment  6/12:		585%
Length  512, alignment  6/12:		585%
Length 1024, alignment  7/14:		611%
Length 1024, alignment  7/14:		611%
Length 1024, alignment  7/14:		611%
2017-06-29 20:36:35 +02:00
Corinna Vinschen 181d8393ae newlib: fix file mode of newly added complex sources
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-06-29 15:30:35 +02:00
Corinna Vinschen 074ca98595 newlib: libm/complex/Makefile.in: regenerate 2017-06-29 13:55:10 +02:00
Aditya Upadhyay 45ae81fc91 Adding csinl.c in Makefile.am
Signed-off-by: Aditya Upadhyay <aadit0402@gmail.com>
2017-06-29 13:54:34 +02:00
Aditya Upadhyay 5bc320d3b5 Importing csinl.c from NetBSD. 2017-06-29 13:54:31 +02:00
Aditya Upadhyay 72b051888e Importing csinhl.c from NetBSD. 2017-06-29 13:44:32 +02:00
Aditya Upadhyay 0d924f0e02 Importing casinhl.c from NetBSD. 2017-06-29 13:44:32 +02:00
Aditya Upadhyay f834c77e7d Importing ctanl.c from NetBSD. 2017-06-29 13:44:32 +02:00
Aditya Upadhyay 67b376ad3f Importing ctanhl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay c907007fb0 Importing cpowl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 716d7107e4 Importing conjl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay fdf82d6f1b Importing catanhl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay a168d244c6 Importing casinl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay ed09969078 Importing ccosl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 28daf6d48b Importing cacosl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay eee8294c42 Adding cephes_subrl.h and cephes_subrl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay b1b12e1e00 Importing cexpl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 4c2556e935 Importing cprojl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 3f1f3a2299 Importing cargl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 436bf2929c Importing csqrtl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 79c8462d86 Importing clogl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Aditya Upadhyay 934145f311 Importing cacoshl.c from NetBSD. 2017-06-29 13:44:31 +02:00
Dionna Glaze d12fe7b6da unistd.h: Remove trailing whitespace 2017-06-29 08:34:19 +02:00
Corinna Vinschen 01a5a306da unistd.h: remove mktemp
mktemp is already correctly declared in stdlib.h

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-06-29 08:32:33 +02:00
Dionna Glaze f70aad3de4 Make gethostname, getdtablesize, mktemp, ualarm available in BSD, XOPEN_SOURCE >= 500. 2017-06-29 08:30:33 +02:00
Sebastian Pop 9938a64ca9 aarch64: optimize the unaligned case of memcmp
This brings to newlib a performance improvement that we developed in Bionic
libc.  That change has been submitted for review to Bionic libc:
https://android-review.googlesource.com/418279

A similar patch has been submitted for review in glibc:
https://sourceware.org/ml/libc-alpha/2017-06/msg01143.html

Patch written by Vikas Sinha and Sebastian Pop.

The performance was measured on the bionic-benchmarks on a hikey (aarch64 8xA53)
board. There was no performance change to the existing benchmark
and a performance improvement on the new benchmark for memcmp
on the unaligned side. The new benchmark has been submitted for
review at https://android-review.googlesource.com/414860

The overall performance improves by 18% for the small data set 8
and the performance improves by 450% for the large data set 64k.

The base is with the libc from /system/lib64. The bionic libc
with this patch is in /data.

hikey:/data # export LD_LIBRARY_PATH=/system/lib64
hikey:/data # ./bionic-benchmarks --benchmark_filter='BM_string_memcmp*'
Run on (8 X 2.4 MHz CPU s)
Benchmark                                Time           CPU Iterations
----------------------------------------------------------------------
BM_string_memcmp/8                      30 ns         30 ns   22955680    251.07MB/s
BM_string_memcmp/64                     57 ns         57 ns   12349184   1076.99MB/s
BM_string_memcmp/512                   305 ns        305 ns    2297163   1.56496GB/s
BM_string_memcmp/1024                  571 ns        571 ns    1225211   1.66912GB/s
BM_string_memcmp/8k                   4307 ns       4306 ns     162562   1.77177GB/s
BM_string_memcmp/16k                  8676 ns       8675 ns      80676   1.75887GB/s
BM_string_memcmp/32k                 19233 ns      19230 ns      36394   1.58695GB/s
BM_string_memcmp/64k                 36986 ns      36984 ns      18952   1.65029GB/s
BM_string_memcmp_aligned/8             199 ns        199 ns    3519166   38.3336MB/s
BM_string_memcmp_aligned/64            386 ns        386 ns    1810734   158.073MB/s
BM_string_memcmp_aligned/512          1735 ns       1734 ns     403981   281.525MB/s
BM_string_memcmp_aligned/1024         3200 ns       3200 ns     218838   305.151MB/s
BM_string_memcmp_aligned/8k          25084 ns      25080 ns      28180   311.507MB/s
BM_string_memcmp_aligned/16k         51730 ns      51729 ns      13521   302.057MB/s
BM_string_memcmp_aligned/32k        103228 ns     103228 ns       6782   302.727MB/s
BM_string_memcmp_aligned/64k        207117 ns     207087 ns       3450   301.806MB/s
BM_string_memcmp_unaligned/8           339 ns        339 ns    2070998   22.5302MB/s
BM_string_memcmp_unaligned/64         1392 ns       1392 ns     502796   43.8454MB/s
BM_string_memcmp_unaligned/512        9194 ns       9194 ns      76133   53.1104MB/s
BM_string_memcmp_unaligned/1024      18325 ns      18323 ns      38206   53.2963MB/s
BM_string_memcmp_unaligned/8k       148579 ns     148574 ns       4713   52.5831MB/s
BM_string_memcmp_unaligned/16k      298169 ns     298120 ns       2344   52.4118MB/s
BM_string_memcmp_unaligned/32k      598813 ns     598797 ns       1085    52.188MB/s
BM_string_memcmp_unaligned/64k     1196079 ns    1196083 ns        540   52.2539MB/s

hikey:/data # export LD_LIBRARY_PATH=/data
hikey:/data # ./bionic-benchmarks --benchmark_filter='BM_string_memcmp*'
Run on (8 X 2.4 MHz CPU s)
Benchmark                                Time           CPU Iterations
----------------------------------------------------------------------
BM_string_memcmp/8                      30 ns         30 ns   23209918   252.802MB/s
BM_string_memcmp/64                     57 ns         57 ns   12348447   1076.95MB/s
BM_string_memcmp/512                   305 ns        305 ns    2296878   1.56471GB/s
BM_string_memcmp/1024                  572 ns        571 ns    1224426    1.6689GB/s
BM_string_memcmp/8k                   4309 ns       4308 ns     162491   1.77109GB/s
BM_string_memcmp/16k                  9348 ns       9345 ns      74894   1.63285GB/s
BM_string_memcmp/32k                 18329 ns      18322 ns      38249    1.6656GB/s
BM_string_memcmp/64k                 36992 ns      36981 ns      18952   1.65045GB/s
BM_string_memcmp_aligned/8             199 ns        199 ns    3513925   38.3162MB/s
BM_string_memcmp_aligned/64            386 ns        386 ns    1814038   158.192MB/s
BM_string_memcmp_aligned/512          1735 ns       1735 ns     402279   281.502MB/s
BM_string_memcmp_aligned/1024         3204 ns       3202 ns     218761   304.941MB/s
BM_string_memcmp_aligned/8k          25577 ns      25569 ns      27406   305.548MB/s
BM_string_memcmp_aligned/16k         52143 ns      52123 ns      13522   299.769MB/s
BM_string_memcmp_aligned/32k        105169 ns     105127 ns       6637    297.26MB/s
BM_string_memcmp_aligned/64k        206508 ns     206383 ns       3417   302.835MB/s
BM_string_memcmp_unaligned/8           282 ns        282 ns    2482953    27.062MB/s
BM_string_memcmp_unaligned/64          542 ns        541 ns    1298317    112.77MB/s
BM_string_memcmp_unaligned/512        2152 ns       2152 ns     325267   226.915MB/s
BM_string_memcmp_unaligned/1024       4025 ns       4025 ns     173904   242.622MB/s
BM_string_memcmp_unaligned/8k        32276 ns      32271 ns      21818    242.09MB/s
BM_string_memcmp_unaligned/16k       65970 ns      65970 ns      10554   236.851MB/s
BM_string_memcmp_unaligned/32k      131241 ns     131242 ns       5129    238.11MB/s
BM_string_memcmp_unaligned/64k      266159 ns     266160 ns       2661   234.821MB/s
2017-06-26 10:22:40 +02:00
Yaakov Selkowitz ec86124748 string: fix strverscmp doc inclusion
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-06-19 11:52:02 -05:00
Yaakov Selkowitz 59e09b6419 string: add strverscmp
The actual implementation is from musl (MIT license).

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-06-19 08:16:42 -05:00
Thomas Preud'homme 0c081aa62c Fix guard for siginfo_t and pthread_t definition
Commit 8a3b3bb4d7 changed the guard on
some functions from _POSIX_THREADS to __POSIX_VISIBLE. As a consequence,
some use of siginfo_t and pthread_t became visible under configurations
where _POSIX_THREADS is unset but __POSIX_VISIBLE is. Build then fails
because the definition of those types are still unavailable.

This commit make those type definition visible for __POSIX_VISIBLE
configurations. This requires moving the siginfo_t definition out of the
RTEMS specific definitions in sys/signal.h while still guarding it
against cygwin case.
2017-06-19 13:00:05 +02:00
Corinna Vinschen 14ea06212b Revert "Don't overread or write memory returned by _DTOA_R"
This reverts commit efaef1bba2.
2017-06-19 12:57:16 +02:00
Yaakov Selkowitz dde6af6f82 Export XSI sigpause
There are two common sigpause variants, both of which take an int argument.
If you request _XOPEN_SOURCE or _GNU_SOURCE, you get the System V version,
which removes the given signal from the process's signal mask; otherwise
you get the BSD version, which sets the process's signal mask to the given
value.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-06-14 14:23:52 -05:00
Joel Sherrill 40ca6f02ed newlib/MAINTAINERS: Add OS maintainers section and myself for RTEMS and Write After Approval. 2017-06-14 13:44:02 -05:00
Yaakov Selkowitz 8a3b3bb4d7 Feature test macros overhaul: signal.h (part 3)
Notably, sigaction and friends are POSIX, but the form of sigpause
currently provided is BSD.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-06-14 10:18:15 -05:00
Yaakov Selkowitz c347bb6469 stdio.h: guard function macros with !__cplusplus
While POSIX allows these functions to also be defined as macros in C, in
C++ this is not allowed, and prevents these names (particularly feof) from
being used in a custom namespace.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-06-14 10:18:14 -05:00
Aditya Upadhyay 35cd6863fb ccoshl: Align formatting to upstream
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-06-14 10:36:38 +02:00
Aditya Upadhyay ed82849b8f Importing ccoshl.c from netbsd.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-06-13 10:41:06 +02:00
Sebastian Huber 0fbd27dd1e Remove FreeBSD specifics from RTEMS <arpa/inet.h>
For whatever reason FreeBSD renames several functions provided by
<arpa/inet.h> and uses weak references to provide the standard function
names.  This causes problems on targets lacking proper support for weak
references.  We do not need this function renaming on RTEMS.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-12 08:41:24 +02:00
Silviu Baranga efaef1bba2 Don't overread or write memory returned by _DTOA_R
Don't over-read memory returned by _DTOA_R, and never write to it
since the result might be a string literal.

For example, when doing:
  swprintf(tt, 20, L"%.*f", 6, 0.0);

we will get back "0".

Instead, write the result returned by _DTOA_R to the output buffer.
After this, write the 0 chars directly to the the output buffer
(if there are any). This also has the (marginal) advantage that
we read/write less memory overall.
2017-06-09 15:30:47 +02:00
Sebastian Huber e9085e0ccd Fix RTEMS ioctl() declaration
Using uint32_t for ioctl_command_t does not work well on 64-bit targets.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-07 15:46:20 +02:00
Sebastian Huber dc93d7adff Update FreeBSD revision of RTEMS <sys/bitset.h>
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-07 15:46:20 +02:00
Sebastian Huber fd5d052d40 Fix some RTEMS CPUSET(9) macros
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-07 15:46:19 +02:00
Sebastian Huber c29f5b219d Fix RTEMS CPU_EQUAL_S()
According to the FreeBSD man page BIT_CMP() returns true in case the two
sets are NOT equal.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-06-07 15:46:19 +02:00
Sebastian Huber ffcaf32108 Add myself to Write After Approval 2017-06-07 14:36:51 +02:00
Prakhar Bahuguna 21ff2cf930 Fix minor issues in memchr NEON implementation 2017-06-07 12:16:15 +02:00
Kito Cheng beb17b264b Print sign of NaN values. 2017-06-07 11:50:31 +02:00
Sebastian Huber d70983ea1b Add de-facto standard <sys/ioctl.h> for RTEMS
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:42:08 -04:00
Sebastian Huber fa88e93d3d Add some POSIX header files for RTEMS
Add the POSIX header files

  * arpa/inet.h
  * net/if.h
  * netdb.h
  * netinet/in.h
  * netinet/tcp.h
  * sys/socket.h
  * sys/syslog.h
  * sys/uio.h
  * sys/un.h
  * syslog.h
  * termios.h

and their dependencies for RTEMS.  The origin of these files is the
latest FreeBSD.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:41:33 -04:00
Sebastian Huber 0b915d6be0 FreeBSD compatibility for RTEMS <sys/cpuset.h>
Make the RTEMS <sys/cpuset.h> compatible with the latest FreeBSD
version.

Fix the CPU_COPY() parameter order, see also:

https://devel.rtems.org/ticket/3023

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:36:27 -04:00
Sebastian Huber 764eda728f Add __bitcount*() to RTEMS <machine/types.h>
Use a dedicated header file <machine/_bitcount.h> to avoid cyclic header
dependencies in future changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:35:38 -04:00
Sebastian Huber 2693c1db69 Move ARM access.c from machine to sys
The implementation of the POSIX access() function is nothing machine
specific like memcpy(), etc.  Move it back to the system domain.  This
avoids problems due to the include search order of the Newlib/GCC build
which picks up machine includes before system includes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:34:53 -04:00
Sebastian Huber 0008601042 Increase MSIZE for RTEMS
Increase the MSIZE for RTEMS to be in line with the latest FreeBSD
version.  The legacy network stack of RTEMS will provides its own
definition.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:33:59 -04:00
Sebastian Huber 2efb117047 FreeBSD compatibility for RTEMS <sys/param.h>
Update the RTEMS <machine/param.h> and <sys/param.h> to be compatible
with the latest FreeBSD version.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:33:40 -04:00
Sebastian Huber 15b59a15b4 Add generic <machine/_align.h> for RTEMS
It uses __BIGGEST_ALIGNMENT__ which is available in recent GCC and
LLVM/clang.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-05-25 12:33:02 -04:00
Kito Cheng c23fbc3aed Add __packed to struct ldieee
- We don't want any padding in struct ldieee, otherwise the offset
   might wrong in most compiler.
2017-04-18 12:25:35 +02:00
Corinna Vinschen bdb017b30c newlib: remove __infinity{f,ld} constants
previous commit 4c90db7bc8 introduced
a compile time error because libm/common/s_infconst.c used the remove
__fmath, __dmath, and __ldmath union types.

Since this is very old, and unused for a very long time, just drop the
file and thus the __infinity constants entirely.

Exception: Cygwin exports __infinity from the beginning.  There's a very,
VERY low probability that any existing executable or lib still uses this
constant, but we just keep it in for backward compat, nevertheless.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-04-18 12:17:26 +02:00
Jeff Johnston 4c90db7bc8 Remove legacy unions which are no longer used
- remove __fmath, __dmath, and __ldmath unions
2017-04-17 19:22:19 -04:00
Prakhar Bahuguna c47c9bdc1b Optimise memchr for NEON-enabled processors 2017-04-06 18:19:20 +02:00
Sebastian Huber eb14d0cc64 Add BSD-specific reallocarray()
It is available in FreeBSD, NetBSD and OpenBSD, but not in glibc.  It is
used for example by OpenSSH.
2017-04-04 12:19:18 +02:00
imp 7c4ae7770e 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
2017-04-04 12:16:05 +02:00
cem 6c6ea2e457 queue.3: Document existing QMD_* macros
Feedback from:	bapt, bdrewery, emaste
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D3983
2017-04-04 12:16:05 +02:00
cem 5e36b70104 queue(3): Enhance queue debugging macros
Split the QUEUE_MACRO_DEBUG into QUEUE_MACRO_DEBUG_TRACE and
QUEUE_MACRO_DEBUG_TRASH.

Add the debug macrso QMD_IS_TRASHED() and QMD_SLIST_CHECK_PREVPTR().

Document these in queue.3.

Reviewed by:	emaste
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D3984
2017-04-04 12:16:05 +02:00
mckusick 9998bd4b7c Add two new macros, SLIST_CONCAT and LIST_CONCAT
Add two new macros, SLIST_CONCAT and LIST_CONCAT. Note in both the
queue.h header file and in the queue.3 manual page that they are O(n) so
should be used only in low-usage paths with short lists (otherwise an
STAILQ or TAILQ should be used).

Reviewed by: kib
2017-04-04 12:16:05 +02:00
hselasky 218c5e7d72 Make the <sys/queue.h> fully usable within C++
Make the system queue header file fully usable within C++ programs by
adding macros to define class lists.

This change is backwards compatible for all use within C and C++
programs. Only C++ programs will have added support to use the queue
macros within classes. Previously the queue macros could only be used
within structures.

The queue.3 manual page has been updated to describe the new
functionality and some alphabetic sorting has been done while
at it.

Differential Revision:	https://reviews.freebsd.org/D2745
PR:			200827 (exp-run)
MFC after:		2 weeks
2017-04-04 12:16:05 +02:00
hselasky 73603c98aa Pass macro arguments properly.
MFC after:	1 week
2017-04-04 12:16:05 +02:00
hselasky d3f9311fff Fix order of arguments in the TRACEBUF_INITIALIZER
Fix order of arguments in the TRACEBUF_INITIALIZER macro so that we can
define QUEUE_MACRO_DEBUG to debug list problems.

MFC after:	1 week
2017-04-04 12:16:05 +02:00
lstewart a36e348a9f Add new FOREACH_FROM variants for queue(3)
Add new FOREACH_FROM variants of the queue(3) FOREACH macros which can
optionally start the traversal from a previously found element by
passing the element in as "var". Passing a NULL "var" retains the same
semantics as the regular FOREACH macros.

Kudos to phk for suggesting the "FROM" suffix instead of my original
proposal.

Reviewed by:	jhb (previous version), rpaulo
MFC after:	1 week
2017-04-04 12:16:05 +02:00
imp d3e919b42a 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
2017-04-04 11:44:03 +02:00
avg 3abc66ec6b don't use C99 static array indices with older GCC versions
For example, the FreeBSD GCC (4.2.1) has a spotty support for that
feature.  If the static keyword is used with an unnamed array parameter
in a function declaration, then the compilation fails with:
error: static or type qualifiers in abstract declarator

The feature does work if the parameter is named.
So, the restriction introduced in this commit can be removed when all
affected function prototypes have the workaround.

MFC after:	1 week
Sponsored by:	Panzura
2017-04-04 11:44:03 +02:00
pfg 7b07f11b1f Addition of clang nullability qualifiers.
For consistency with the qualifiers added in r310977, define a new
qualifier _Null_unspecified which is also defined in clang 3.7+.

Add two new macros:
__NULLABILITY_PRAGMA_PUSH
__NULLABILITY_PRAGMA_POP

These are for use in headers when we want avoid noisy warnings if
some pointers are left without nullability annotations.

These are added with way ahead of their first use to teach the GCC
ports headers of their existance before their first use.
2017-04-04 11:44:03 +02:00
pfg e1563a05b7 Remove unused __gnu_inline() attribute.
This was meant to be used by a future FORTIFY_SOURCE implementation.
Probably for good, FORTIFY_SOURCE and this particular GCCism were never
well supported by clang or other compilers. Furthermore, the technology
has long since been replaced by either static checkers, sanitizers, or
even just the strong stack protector that was enabled by default.

Drop __gnu_inline to avoid cluttering the headers.

MFC after:	5 days
2017-04-04 11:44:03 +02:00
pfg 81c121c487 Addition of clang nullability qualifiers.
Add two new qualifiers for use by the static checkers:

_Nonnull
The _Nonnull nullability qualifier indicates that null is not a meaningful
value for a value of the _Nonnull pointer type.

_Nullable
The _Nullable nullability qualifier indicates that a value of the
_Nullable pointer type can be null.

These were introduced in Clang 3.7. For more information, see:
http://clang.llvm.org/docs/AttributeReference.html#nonnull

We add these now without using them so that the GCC ports have time to
pick up the header change.

Hinted by:	Android Bionic libc [1]
Also seen in:	Apple's Libc-1158.20.4

[1]
baa2a973bd
2017-04-04 11:44:03 +02:00
asomers 84a6dba57e Fix C++ includability of crypto headers with static array sizes
C99 allows array function parameters to use the static keyword for their
sizes. This tells the compiler that the parameter will have at least the
specified size, and calling code will fail to compile if that guarantee is
not met. However, this syntax is not legal in C++.

This commit reverts r300824, which worked around the problem for
sys/md5.h only, and introduces a new macro: min_size(). min_size(x) can
be used in headers as a static array size, but will still compile in C++
mode.

Reviewed by:	cem, ed
MFC after:	4 weeks
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D8277

fix a typo in __STDC_VERSION__ in __min_size requirements

MFC after:	1 week
Sponsored by:	Panzura
2017-04-04 11:44:02 +02:00
dim e0dabc0e8d Stop exposing the C11 _Atomic() macro in <sys/cdefs.h>, when compiling for C++.
It clashes with the one in libc++'s <atomic> header.

(Previously, the _Atomic() macro was defined in <stdatomic.h>, which is
only for use with C11, but for various reasons it was moved to its
current location in r251804.)

Discussed with:	bdrewery, ed
MFC after:	2 weeks
2017-04-04 11:43:49 +02:00
pfg 086730fb14 Rename __sentinel to __null_sentinel
GCC 5 uses a conflicting __sentinel definition in include/c++/bits/stl_algo.h

Reported by:	matteo
2017-04-04 11:41:13 +02:00
Sebastian Huber f70d9ae6ad Use enum __packed in favour of -fshort-enums
Some architectures like ARM encode the short enum option state in the
object file and the linker checks that this option is consistent for all
objects of an executable.  In case applications use -fno-short-enums,
then this leads to linker warnings.  Use the enum __packed attribute for
the relevent enums to avoid the -fshort-enums compiler option.  This
attribute is at least available on GCC, LLVM/clang and the Intel
compiler.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-04-03 10:26:33 +02:00
Catherine Moore 571c69656a Use .syntax unified instead of .syntax divided. 2017-03-30 17:18:12 +02:00
Yaakov Selkowitz 90e35b1eb3 Rename <sys/_locale.h> to <xlocale.h>
The locale_t type is provided by <xlocale.h> on Linux, FreeBSD, and Darwin.
While, like on some of those systems, it is automatically included by
<locale.h> with the proper feature test macros, its presence under this
particular name is still presumed in real-world software.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-03-22 10:03:45 +01:00
Sebastian Huber ffbfb332d6 ARM: Fix IEEE-754 sqrt implementation
Older GCC (e.g. 4.9.3) seem to define __ARM_FP even in case soft-float
is used.
2017-03-22 10:01:50 +01:00
Sebastian Huber baf32fb85f ARM: Optimize IEEE-754 sqrt implementation
Use the vsqrt.f64 and vsqrt.f32 instructions if available.
2017-03-21 14:42:26 +01:00
Joel Sherrill 33c7b2b544 libc/string/strsignal.c: Use of || not && lead to dead code.
Coverity Id: 175333
2017-03-15 12:04:34 -05:00
Joel Sherrill 6e3a2037eb rtems/crt0.c: getentropy() stub did not return a value.
Coverity Scan ID: 175342
2017-03-15 12:04:28 -05:00
Koichi Murase 973f766f6e Fix duplocale (libc/locale/duplocale.c) which fails to properly call __loadlocale
Problem:

  After  passing  locales  created  by  'duplocale'   to   'uselocale',
  referencing   'MB_CUR_MAX',   which   is   actually   expanded    to
  '__locale_mb_cur_max()' by preprocessors, causes segmentation faults.
  Direct use of locales from 'newlocale' does not  cause  the  problem.
  This is the problem of 'duplocale'.

  $ echo $LANG
  ja_JP.UTF-8
  $ cat test.c
  #include <stdlib.h>
  #include <locale.h>

  volatile int var;

  int main(void) {
    locale_t const loc = newlocale(LC_ALL_MASK, "", NULL);
    locale_t const dup = duplocale(loc);
    locale_t const old = uselocale(dup);
    var = MB_CUR_MAX; /* <-- crashes here */
    uselocale(old);
    freelocale(dup);
    freelocale(loc);
    return 0;
  }
  $ gcc test.c
  $ ./a
  Segmentation fault (core dumped)

  # Note: "core dumped" in the above message was  actually written  in
  # Japanese, but I translated the part to post a mail in English.

Bug:

  In the beginning of '__loadlocale' (newlib/libc/locale/locale.c:501),
  there is a code which checks if the operations can be skipped:

  > /* Avoid doing everything twice if nothing has changed. */
  > if (!strcmp (new_locale, loc->categories[category]))
  >   return loc->categories[category];

  While,   in   the   function   '_duplocale_r'    (newlib/libc/locale/
  duplocale.c), '__loadlocale'  is  called  as  in  the  quoted  codes:

  > /* If the object is not a "C" locale category, copy it.  Just call
  >    __loadlocale.  It knows what to do to replicate the category. */
  > tmp_locale.lc_cat[i].ptr = NULL;
  > tmp_locale.lc_cat[i].buf = NULL;
  > if (!__loadlocale (&tmp_locale, i, tmp_locale.categories[i]))
  >   goto error;

  This call of '__loadlocale' results in the skip check being

    !strcmp(tmp_locale.categories[i], tmp_locale.categories[i]),

  which is always true. This  means  that  the  actual  operations  of
  '__loadLocale' will never be performed for 'duplocale'.

Fix:

  The call of '__loadlocale' in '_duplocale_r' is modified.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-03-13 11:12:01 +01:00
Jon Turney e046e4de14 Update makedocbook for bd547490
Teach makedocbook how to handle some new things seen in the makedoc markup
since bd547490:

- struct lines appearing in the synopsis
- use of @strong{} texinfo markup
2017-02-15 16:32:36 +01:00
Thomas Preud'homme bd54749095 Allow locking routine to be retargeted
At the moment when targeting bare-metal targets or systems without
definition for the locking primitives newlib, uses dummy empty macros.
This has the advantage of reduced size and faster implementation but
does not allow the application to retarget the locking routines.
Retargeting is useful for a single toolchain to support multiple systems
since then it's only at link time that you know which system you are
targeting.

This patch adds a new configure option
--enable-newlib-retargetable-locking to use dummy empty functions
instead of dummy empty macros. The default is to keep the current
behavior to not have any size or speed impact on targets not interested
in this feature. To allow for any size of lock, the _LOCK_T type is
changed into pointer to struct _lock and the _init function are tasked
with allocating the locks. The platform being targeted must provide the
static locks. A dummy implementation of the locking routines and static
lock is provided for single-threaded applications to link successfully
out of the box.

To ensure that the behavior is consistent (either no locking whatsoever
or working locking), the dummy implementation is strongly defined such
that a partial retargeting will cause a doubly defined link error.
Indeed, the linker will only pull in the file providing the dummy
implementation if it cannot find an implementation for one of the
routine or lock.
2017-02-13 17:07:11 -05:00
Thomas Preud'homme fa55c610fa Only define static locks in multithreaded mode
Newlib build system defines __SINGLE_THREAD__ to allow concurrency code
to be only compiled when newlib is configured for multithread. One such
example are locks which become useless in single thread mode. Although
most static locks are indeed guarded by !defined(__SINGLE_THREAD__),
some are not.

This commit adds these missing guards to __dd_hash_mutex,
__atexit_recursive_mutex, __at_quick_exit_mutex and __arc4random_mutex.
It also makes sure locking macros in lock.h are noop in single thread
mode.
2017-02-13 17:04:17 -05:00
Freddie Chopin 0eeb4c1d32 Unify names of all lock objects
In preparation for the patch that would allow retargeting of locking
routines, rename all lock objects to follow this pattern:

"__<name>_[recursive_]mutex".

Following locks were renamed:
__dd_hash_lock -> __dd_hash_mutex
__sfp_lock -> __sfp_recursive_mutex
__sinit_lock -> __sinit_recursive_mutex
__atexit_lock -> __atexit_recursive_mutex
_arc4random_mutex -> __arc4random_mutex
__env_lock_object -> __env_recursive_mutex
__malloc_lock_object -> __malloc_recursive_mutex
__atexit_mutex -> __at_quick_exit_mutex
__tz_lock_object -> __tz_mutex
2017-02-06 16:55:09 -05:00
Kyrill Tkachov 52a6da816f arm: Fix addressing in optpld macro
In patch b219285f87 you have a syntax
error in the PLD instruction.  The syntax for the pld argument should be
in square brackets as it's a memory address like so: pld [r1].  With
your patch the newlib build fails for armv7-a targets.  This patch fixes
the build failures.

Tested by making sure the newlib build completes successfully.

2016-01-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

    * libc/machine/arm/strcpy.c (strcpy): Fix PLD assembly syntax.
    * libc/machine/arm/strlen-stub.c (strlen): Likewise.
2017-01-26 16:29:36 +01:00
Pat Pannuto 3ebc26958e arm: Remove RETURN macro
LTO can re-order top-level assembly blocks, which can cause this
macro definition to appear after its use (or not at all), causing
compilation failures. On modern toolchains (armv4t+), assembly
should write `bx lr` in all cases, and linkers will transparently
convert them to `mov pc, lr`, allowing us to simply remove the
macro.
  (source: https://groups.google.com/forum/#!topic/comp.sys.arm/3l7fVGX-Wug
   and verified empirically)

For the armv4.S file, preserve this macro to maximize backwards
compatibility.
2017-01-25 13:32:09 +01:00
Pat Pannuto b219285f87 arm: Remove optpld macro
LTO can re-order top-level assembly blocks, which can cause this
macro definition to appear after its use (or not at all), causing
compilation failures. As the macro has very few uses, simply removing
it by inlining is a simple fix.

n.b. one of the macro invocations in strlen-stub.c was already
guarded by the relevant #define, so it is simply converted directly
to a pld
2017-01-25 13:32:09 +01:00
Pat Pannuto e7332409cc Remove unneeded references to arm_asm.h
This should result in no functional changes, it simply removes references
to arm_asm.h that did not use anything from that file.
2017-01-25 13:32:09 +01:00
Sebastian Huber 3cf29149be devctl.h: Fix typo and include proper header
Remove stray commas.  Include <sys/cdefs.h> for __restrict (includes
<stddef.h> indirectly).

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-01-25 12:37:19 +01:00
Sebastian Huber e692cfc121 RTEMS: Harmonize MAXNAMLEN and NAME_MAX
Override MAXNAMLEN definition in <dirent.h> and make sure it equals
NAME_MAX.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-01-25 12:36:37 +01:00
Thomas Preudhomme cd1b883526 Prefix consistenly target-independent locks with __
Hi,

With the patch to allow newlib's locking routine to be retargeted currently
under discussion, we need to start thinking of locks as part of newlib's ABI
since newlib depends on specific names being provided by the OS. This patch
renames 2 locks so that they follow the same naming convention as other locks.
It needs to be applied before the retargeting patch, while locks are still an
internal consideration.

Newlib builds successfully with this change.

Ok for master branch?

Best regards,

Thomas
2017-01-25 12:36:05 +01:00
Eric Blake ca3e3bc54e nl_langinfo: Add NL_LOCALE_NAME macro
Provide an extension NL_LOCALE_NAME() macro, with semantics
matching glibc, which can be used as:
  nl_langinfo_l(NL_LOCALE_NAME(LC_MESSAGES), locale);
to get back the locale string that locale was originally
created with during newlocale(). This in turn allows a library
(such as gettext) to determine what thread-local locale settings
it has inherited from the main program without having to be told
what parameters were passed to newlocale(), for less overall
coupling between parts of the program.

gnulib is set up to use the extension:
https://lists.gnu.org/archive/html/bug-gnulib/2017-01/msg00129.html

* libc/include/langinfo.h (NL_LOCALE_NAME): New macro
* libc/locale/nl_langinfo.c (nl_langinfo_l): Expose locale names
of a locale_t's category components.

Signed-off-by: Eric Blake <eblake@redhat.com>
2017-01-20 10:30:47 +01:00
Joel Sherrill 96267313e1 devctl.h: Use __restrict not restrict 2017-01-17 16:10:58 -06:00
Pat Pannuto e02866a1b4 Add missing headers to fix implicit function defns
A few files were missing headers for memset/malloc, likely missed
because the files don't directly call the functions, rather they
come in via macros in libc/include/sys/reent.h:

    #define _REENT_CHECK(var, what, type, size, init) do { \
      struct _reent *_r = (var); \
      if (_r->what == NULL) { \
        _r->what = (type)malloc(size); \

    #define _REENT_CHECK_ASCTIME_BUF(var) \
      _REENT_CHECK(var, _asctime_buf, char *, _REENT_ASCTIME_SIZE, \
        memset((var)->_asctime_buf, 0, _REENT_ASCTIME_SIZE))

Without these fixes, implicit function signatures are provided,
which gcc warns could cause aliasing issues down the line:

    ../../../../../../../newlib-2.5.0/newlib/libc/time/asctime.c:62:3: warning: type of 'memset' does not match original declaration [-Wlto-type-mismatch]
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/string.h:29:7: note: return value type mismatch
     _PTR  _EXFUN(memset,(_PTR, int, size_t));
           ^
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/string.h:29:7: note: 'memset' was previously declared here
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/string.h:29:7: note: code may be misoptimized unless -fno-strict-aliasing is used
    ../../../../../../../newlib-2.5.0/newlib/libc/time/asctime.c:62:3: warning: type of 'malloc' does not match original declaration [-Wlto-type-mismatch]
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: return value type mismatch
     extern _PTR malloc _PARAMS ((size_t));
                 ^
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: 'malloc' was previously declared here
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: code may be misoptimized unless -fno-strict-aliasing is used

    ../../../../../../../newlib-2.5.0/newlib/libc/time/lcltime.c:58:3: warning: type of 'malloc' does not match original declaration [-Wlto-type-mismatch]
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: return value type mismatch
     extern _PTR malloc _PARAMS ((size_t));
                 ^
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: 'malloc' was previously declared here
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: code may be misoptimized unless -fno-strict-aliasing is used

    ../../../../../../../newlib-2.5.0/newlib/libc/string/strsignal.c:70:3: warning: type of 'malloc' does not match original declaration [-Wlto-type-mismatch]
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: return value type mismatch
     extern _PTR malloc _PARAMS ((size_t));
                 ^
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: 'malloc' was previously declared here
    /Volumes/code/external/newlib-cygwin/newlib/libc/include/malloc.h:37:13: note: code may be misoptimized unless -fno-strict-aliasing is used

Including the proper headers elminates the implicit function
signatures and these warnings.
2017-01-16 10:14:28 +01:00
Gedare Bloom 338ce06971 Add _POSIX_SHARED_MEMORY_OBJECTS 2017-01-13 13:07:40 -06:00
Joe Seymour c0ac2ea2b3 Expand comments on padding used by nano_malloc
This patch adds further comments to nano-mallocr.c, to more comprehensively
explain how padding works in the malloc_chunk structure.

It was originally discussed in the following thread:
  https://sourceware.org/ml/newlib/2017/msg00031.html

2017-01-13  Joe Seymour  <joe.s@somniumtech.com>

        newlib/
        * libc/stdlib/nano-mallocr.c (malloc_chunk, get_chunk_from_ptr)
        (nano_malloc): Add comments.
2017-01-13 17:39:21 +01:00
Jeff Johnston e0477b4a0b Fix sys/reent.h to remove use of DEBUG flag.
- use of DEBUG flag is non-standard and interferes with other
  project's using same flag
- change to be _REENT_CHECK_DEBUG which means the flag is
  allowing debugging of _REENT_CHECK macros
- use #ifdef instead of #if
2017-01-10 12:19:03 -05:00
Corinna Vinschen 5367b96a4b Fix versions in documentation (manually for now)
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2017-01-09 16:22:02 +01:00
Sebastian Huber 85d6679ab3 Add pthread_setname_np() and pthread_getname_np()
The pthread_setname_np() and pthread_getname_np() are GNU extensions and
provided by glibc.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-01-09 16:19:58 +01:00
Joe Seymour 83c39aedac Fix incorrect cast in nano malloc
As described in nano-mallocr.c, chunks of heap are represented in memory
as a size (of type long), followed by some optional padding containing a
negative offset to size, followed by the data area.

get_chunk_from_ptr is responsible for taking a pointer to the data area
(as returned by malloc) and finding the start of the chunk. It does this
by assuming there is no padding and trying to read the size, if the size
is negative then it uses that as an offset to find the true size.
Crucially, it reads the padding area as a long.

nano_malloc is responsible for populating the optional padding area. It
does so by casting a pointer to an (int *) and writing the negative
offset into it.

This means that padding is being written as an int but read as a long.

On msp430 an int is 2 bytes, while a long is 4 bytes. This means that 2
bytes are written to the padding, but 4 bytes are read from it: it has
only been partially initialised.

nano_malloc is the default malloc implementation for msp430.

This patch changes the cast from (int *) to (long *). The change to
nano_malloc has has been observed to fix a TI Energia project that
had been malfunctioning because malloc was returning invalid addresses.
The change to nano_memalign is based entirely on code inspection.

I've built and tested as follows:
  Configured (gcc+newlib) with: --target=msp430-elf --enable-languages=c
  gcc testsuite variations:
    msp430-sim/-mcpu=msp430
    msp430-sim/-mcpu=msp430x
    msp430-sim/-mcpu=msp430x/-mlarge/-mdata-region=either/-mcode-region=either
    msp430-sim/-mhwmult=none
    msp430-sim/-mhwmult=f5series
My testing has shown no regressions, however I don't know if the gcc
testsuite provides sufficient coverage for this patch?

I don't have write access, so if this patch is acceptable after review,
I would appreciate it if someone would commit it for me.

Thanks,

2017-01-XX  Joe Seymour  <joe.s@somniumtech.com>

	newlib/
	* libc/stdlib/nano-mallocr.c (nano_malloc): Fix incorrect cast.
	(nano_memalign): Likewise.
2017-01-09 16:16:12 +01:00
Sebastian Huber 69dabb3e30 RTEMS: Add user-defined name to thread queues
Add a user-defined name to the self-contained synchronization objects in
order to make system diagnostics, tracing and debugging more user
friendly.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2017-01-09 16:11:50 +01:00
Jeff Johnston 61f181d6b8 Bump release to 2.5.0 for yearly snapshot. 2016-12-22 21:33:54 -05:00
Jeff Johnston 959d85b341 This is an attempt to fix the problem described here:
https://sourceware.org/ml/newlib/2016/msg01139.html
https://gcc.gnu.org/ml/gcc/2016-12/msg00010.html

There is no change if libtool is used.

Some run-time support libraries provided by GCC (e.g. libgomp) use
configure checks to detect certain features, e.g. availability of
thread-local storage.  The configure script generates a test program and
tries to compile and link it.  It should use target libraries and
startfiles of the build tree if available and not random ones from the
installation prefix for this procedure.  The search directories
specified by -B are a bit special, see for_each_path() in gcc.c of the
GCC sources.  First a search is performed on all search paths with the
multilib directory appended (if desired), then a second search is
performed on demand with the base directory only.  For each multilib
there is a "newlib" subdirectory.  This directory is specified by a -B
option for the support libraries.  In order to find the newlib artifacts
(ctr0.o, libc.a, libg.a and libm.a) they must be located in a proper
multilib subdirectory withing the build directory.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-12-22 14:50:00 -05:00
Sebastian Huber 483e696049 RTEMS: Increase SEM_VALUE_MAX
RTEMS defined SEM_VALUE_MAX to 32767 unlike other systems like FreeBSD
and glibc.  A common value is INT_MAX.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-12-20 12:39:31 +01:00
Corinna Vinschen f46f501471 Remove extraneous float casts in wcstod.c.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-12-16 19:25:30 +01:00
Jeff Johnston 84e58ab648 Remove extraneous float casts in strtod.c. 2016-12-16 11:32:25 -05:00
Jeff Johnston dd4a4baab0 2016-12-15 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* libc/stdlib/strtod.c (strtof_l): Set errno to ERANGE when double to
     float conversion results in infinity.
     (strtof): Likewise.
     * libc/stdlib/wcstod.c (wcstof_l): Likewise.
     (wcstof): Likewise.
2016-12-15 12:23:27 -05:00
Jeff Johnston 05272960ab 2016-12-15 Giuseppe Musumeci <giuseppe.musumeci@broadcom.com>
__sinit initialises some common file descriptors as line buffered and
relies on the first users of such FDs to call __smakebuf_r. If
__smakebuf_r realises there's no space for a buffer (malloc returns
NULL), it makes them unbuffered. However, while setting the __SNBF
bit, it doesn't clear the __SLBF bit in the flags. Depending on the
order in which functions check buffering flags in the FD, sometime
they assume it's line buffered (e.g. __sfvwrite_r), trashing
application memory that's not really been allocated to them.

This patch solves the problem by clearing the unbuffered/line buffered
flag when setting the line buffered/unbuffered flag.
2016-12-15 12:12:31 -05:00
Julian Brown bc4f996f56 Big-endian fix for memcpy-armv7m.S
In the case of memcpy-armv7m.S being built for a big-endian multilib
(including armv7 without a specific profile), realignment code made
assumptions about the byte ordering being little-endian.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-12-12 11:23:45 +01:00
Jon Turney 4007871174 Fix 'make man' for parallel make
Ensure the Python Lex/Yacc (PLY) cache used by makedocbook is initialized
before it is used by parallelizable rules to make the DocBook XML, as it
appears that these can collide in cache generation, leading to errors.

Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
2016-12-06 17:34:47 +00:00
Joel Sherrill 1a2741508b Add <devctl.h> per POSIX 1003.26-2003 2016-12-05 21:00:38 -06:00
Sebastian Huber df2ea99a50 Add missing crt0 symbols for RTEMS
In order to enable proper detection of thread-local storage availability
we have to provide some symbols on ARM.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-12-05 16:43:17 +01:00
Corinna Vinschen a43e81e233 Enforce no arguments for __get_current_locale/__get_C_locale
Remember: foo() != foo(void)

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-11-28 10:18:49 +01:00
Douglas 5fdd657b36 Correct argument to __get_current_locale.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-11-28 09:54:38 +01:00
Sebastian Huber 724e21493a Self-contained pthread_spinlock_t for RTEMS
Turn pthread_spinlock_t into a self-contained object.  On uni-processor
configurations, interrupts are disabled in the lock/trylock operations
and the previous interrupt status is restored in the corresponding
unlock operations.  On SMP configurations, a ticket lock is a acquired
and released in addition.

See also:

https://devel.rtems.org/ticket/2674

This implementation is simple and efficient.  However, this test case of
the Linux Test Project would fail due to call of printf() and sleep()
during spin lock ownership:

https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_spin_lock/1-2.c

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-24 16:57:51 +01:00
Sebastian Huber 9fbd510569 Provide <memory.h>
Provide <memory.h> for all standard Newlib targets and remove
Cygwin-specific header.  Most POSIX like systems provide this historic
header.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-22 14:21:35 +01:00
Sebastian Huber 0bb58fbd3e Declare non-standard pthread_yield()
The non-standard pthread_yield() function is available at least on
Cygwin, FreeBSD and glibc.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-22 14:21:33 +01:00
Sebastian Huber e655d3d34b Move pthread types to <sys/_pthreadtypes.h>
This makes it possible provide operating system specific types for
<pthread.h>.  It is in line with the FreeBSD header file structure and
allows a future cleanup of <pthread.h> to not expose unrelated things
via <sys/types.h> and <unistd.h>.  Glibc uses the similar
<bits/pthreadtypes.h> for this purpose.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-17 11:33:15 +01:00
Sebastian Huber ba49de472f Add _TICKET_LOCK_INITIALIZER to <sys/lock.h>
Add _TICKET_LOCK_INITIALIZER to statically initialize a
_Ticket_lock_Control structure.  This makes it possible to embed a
ticket lock in other structures outside of <sys/lock.h>.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-17 11:28:45 +01:00
Sebastian Huber 9bbc5a34f2 Use __inline in <sys/lock.h> for RTEMS
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-17 11:28:21 +01:00
Corinna Vinschen 9ba4744620 sys/cdefs.h: Define __hidden as empty on Cygwin
Non-default visibility attributes are unsupported on PE/COFF, so don't
use in __hidden definition for Cygwin.  Add comment.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-11-08 16:14:43 +01:00
Sebastian Huber 172e2050d9 Use external header file for kernel space time
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-07 14:03:55 +01:00
Sebastian Huber 4b3a664a20 Add kernel space header for <sys/lock.h> for RTEMS
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-07 14:03:54 +01:00
Sebastian Huber dcaf7fedb9 Use external header file for kernel space types
The FreeBSD kernel types are not used in Newlib.  Provide them via an
external header file to decouple Newlib and FreeBSD updates for RTEMS.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-07 14:03:53 +01:00
Sebastian Huber 64f900c9ce Provide cap_ioctl_t for RTEMS
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-11-07 14:03:51 +01:00
Thomas Preudhomme cf6e411f17 Fix pdf build failure with texinfo 6.1.0
Hi,

make pdf on Ubuntu 16.04 fail with:

newlib/libc/libc.texinfo:9: Missing @endcsname inserted.

After a lot of fiddling the reason appears to be the combination of concept
and function index despite a lack of concept index entries. Arguably texinfo
should not error in that case but here we are, newlib will fail to build its
documentation on some systems because of this. Since libc.texinfo only
contains function index entries this patch simply removes the combination of
indices. It does the same for libm.texinfo which has concept index entries but
no function index entries.

Tested by running make pdf, make dvi, make info and make html successfully.
libc.pdf appears to have only one index as expected.

== Proposed commit message ==

Fix pdf build failure with texinfo 6.1.0 as provided in Ubuntu 16.04. Index
combination in libc.texinfo and libm.texinfo fails because both file have only
one type of index entries. Removing index combination is thus harmless and
solves the problem.

Is this ok for master?

Best regards,

Thomas
2016-10-25 17:45:11 +02:00
Sebastian Huber 2b496cf1af Provide vm_page_t for RTEMS via <machine/_types.h>
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-10-25 16:24:07 +02:00
Sebastian Huber 40f07f7922 Provide rman_res_t for RTEMS via <machine/types.h>
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-10-25 16:24:06 +02:00
Sebastian Huber b1f3215380 Provide __intmax_t and __uintmax_t
Provide __intmax_t and __uintmax_t via <machine/_default_types.h> and
define intmax_t and uintmax_t in <sys/_stdint.h> for FreeBSD
compatibility.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-10-25 16:24:05 +02:00
Sebastian Huber 4e91600796 Fix typo in <sys/_stdint.h>
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2016-10-25 16:24:03 +02:00
Corinna Vinschen 5c758bf910 towupper: Eliminate dead code
Fixes Coverity CID 59865

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-22 22:00:51 +02:00
Corinna Vinschen 941df759a2 Fix a potential buffer overflow in wscanf family
Fixes Coverity CID 60046

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-22 21:43:28 +02:00
Corinna Vinschen 94f40db019 get_alt_digits: Fix typo in allocation
adi->digit is an array of CHAR *, not of CHAR **.

Fixes Coverity CID 60043

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-22 21:29:10 +02:00
Corinna Vinschen 8c6e4fec14 Actually return value from __cp_index
Fixes Coverty CID 153470

Also drop redundant declaration of __cp_index.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-22 21:08:44 +02:00
Corinna Vinschen 5005be3daf Drop redundant checks for NULL input string in wctomb helper funcs
Fixes Coverity CIDs 153465 and 153466

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-22 20:28:08 +02:00
Corinna Vinschen 34aded1f54 Fix check for empty locale string in newlocale
The original test is broken.  It tests for a NULL locale which
isn't just wrong, it simply can't occur at this point due to an
earlier check for a NULL locale string.  Thus, the locale info
for a category is never taken from the environment.

Fixes Coverty CID 153467.

Also, add comment.

Also, add some parens for readability.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-22 20:22:20 +02:00
Ken Brown dda82d1a7b Add _PC_CASE_INSENSITIVE to [f]pathconf
Update the getconf utility to support the new flag as well as
_PC_POSIX_PERMISSIONS and _PC_POSIX_SECURITY.  These were previously
unsupported, probably as an oversight.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-10-21 13:39:02 +02:00
Thomas Preud'homme 8394e47d73 Make ctype_.c and ctype_.h agree on _ctype_b type
_ctype_b is defined in ctype_.c as a const char array for non cygwin
targets allowing negative ctype index but as a char array for the same
targets in ctype_.h, giving type conflict at compile time.  This is
because the cygwin targets are not treated specially in the latter file.
This patch adds the necessary logic for cygwin targets in ctype_.h.
2016-10-17 16:37:44 +02:00
Corinna Vinschen 091a0ac120 Fix typo in strerror doc
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-31 13:43:19 +02:00
Yaakov Selkowitz 3d3ab82968 Fix off_t typedef on Cygwin64
While both long and long long are 64-bits on x86_64, they are distinct types,
and long was used prior to commit 477463a201.
Changing this breaks the linking of previously compiled C++ functions with
off_t arguments on 64-bit Cygwin with newly compiled code, as the mangling of
long (l) and long long (x) differ.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-08-29 15:30:59 -05:00
Corinna Vinschen de8b81950d Change return type from locale_t to struct __locale_t * as well
Complements commit 14228e2.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-25 17:27:37 +02:00
Corinna Vinschen b690df6bbd Drop duplicate _ctype_ declaration from ctype_.h
It's already defined in ctype.h.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-25 16:05:18 +02:00
Corinna Vinschen e97109184a Drop global __ctype_ptr__ entirely in favor of using locale_t::ctype_ptr
Keep __ctype_ptr__ available on Cygwin only, for backward compatibility
with existing apps referencing it via the ctype macros.

Otherwise initialize __global_locale.ctype_ptr and __C_locale.ctype_ptr
and use them throughout.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-25 14:18:31 +02:00
Corinna Vinschen 14228e2d0f Use struct __locale_t * for reentrent locale functions
This fixes a build problem since locale_t is only defined if
__POSIX_VISIBLE >= 200809.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-25 09:53:01 +02:00
Brian Inglis 448b46397d Add strerror_l prototype, change str[n]casecmp_l feature tests
strerror_l prototype was missing.
str[n]casecmp_l feature tests in string.h vs. strings.h were transposed.
2016-08-25 09:44:31 +02:00
Corinna Vinschen a703d64ad7 Avoid crash when calling __localeconv_l with __C_locale
__C_locale is const.  Thus, overwriting the lconv values in __localeconv_l
will try to write to a R/O region.  Given the lconv values in __C_locale
are initialized, there's no reason to write them in __localeconv_l at all.
Just return &__C_locale.lconv.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-24 19:46:55 +02:00
Corinna Vinschen 58ede08b91 Use #if __GNU_VISIBLE, not #ifdef __GNU_VISIBLE
sys/features.h always defines __GNU_VISIBLE, either as 0 or 1.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-24 10:18:54 +02:00
Eric Blake ec0117b6e1 strerror_l: Fix copy-and-paste typo
Signed-off-by: Eric Blake <eblake@redhat.com>
2016-08-23 14:36:06 -05:00
Corinna Vinschen 7501249d5e Mention strerror_l in libc/string/strings.tex
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 18:15:55 +02:00
Corinna Vinschen 3f36c6fa62 Add __get_C_locale inline function and fix new locale code for !_MB_CAPABLE targets
Only access "C" locale using the new __get_C_locale inline function.
Enable __global_locale for !_MB_CAPABLE targets.  Accommodate !_MB_CAPABLE
targets in new locale code.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 17:57:06 +02:00
Corinna Vinschen 0ecb846d2b Implement GNU extension strptime_l
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 17:51:14 +02:00
Corinna Vinschen e636fe3d48 Implement GNU extension wcsftime_l
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 17:51:14 +02:00
Corinna Vinschen 463a8afaa5 Implement missing POSIX-1.2008 function strerror_l
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 17:51:14 +02:00
Corinna Vinschen 80e0ad1e77 Add missing declarations of str{n}casecmp_l to strings.h.
Per glibc, both funcs are defined as GNU visible in strings.h.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 17:40:03 +02:00
Corinna Vinschen fb8e88815e Fix stray closing brace
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 13:08:01 +02:00
Corinna Vinschen f4fb06ce17 Add/change a few #ifdef comments in locale code for clearness
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 12:43:40 +02:00
Corinna Vinschen 3eace743b2 Remove erroneous POSIX guards for reentrant locale functions
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 12:39:42 +02:00
Corinna Vinschen 2fb5e3dfb2 Reference __global_locale only via __get_global_locale.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-23 12:38:28 +02:00
Corinna Vinschen 5085ce2106 Remove extern declaration of __locale_cjk_lang in string/local.h
Now that __locale_cjk_lang is an inline function in setlocale.h and
setlocale.h is included, the declaration doesn't make sense.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-21 12:14:32 +02:00
Corinna Vinschen 216054fa77 Implement missing POSIX function nl_langinfo_l
Change nl_langinfo to nl_langinfo_l using locale given as argument.
Remove outdated TRANSITION_PERIOD_HACK.  The codeset is stored in
the locale for quite some time now.  For !MB_CAPABLE targets, just
return "US_ASCII" as codeset.

Implement nl_langinfo by calling nl_langinfo_l.  Export nl_langinfo_l
from Cygwin DLL and bump minor API version number.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-20 17:22:41 +02:00
Corinna Vinschen 7630e38462 Introduce __current_locale_charset/__locale_charset
The former __locale_charset always fetched the current locale's charset.
We need the per-locale charset, too, in future. Rename __locale_charset
to __current_locale_charset and change __locale_charset to take a
locale_t as parameter.  Accommodate througout.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-20 17:14:56 +02:00
Thomas Preud'homme 65277df72d Fix html build 2016-08-19 11:59:37 +02:00
Corinna Vinschen 3bbc40af2a Revert "Fix __getreent function for Cygwin"
This reverts commit 4de8596.  It worked around a problem which was
actually introduced by patch 10a30e7 a few weeks ago.  Rather than
adding special code to the newlib version of __getreent, the followup
patch reinstantiates the original, Cygwin-only implementation of
__getreent.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Stefan Assmann <sassmann@redhat.com>
2016-08-18 15:24:18 +02:00
Corinna Vinschen 4de8596b8e Fix __getreent function for Cygwin
So far the lib function __getreent always returned _impure_ptr.  On Cygwin
this is only correct after _impure_ptr got initialized.  The inline
function in include/cygwin/config.h always returns the right _reent ptr,
though.

After introducing per-thread locales, the __getreent function is called
prior to initialization of _impure_ptr (from dll_crt0_0) to access the
locale pointer, which leads to a crash.

Fix the __getreent lib function for Cygwin to return the correct _reent
pointer all the time.  Rename inline function to __inline_getreent
and introduce a macro __getreent calling the inline function.  Change
the lib function __getreent to call __inline_getreent on Cygwin.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-18 10:27:14 +02:00
Thomas Preudhomme 0e2e3c958c Fix pdf build failure wrt documentation of is*_l functions
make pdf on arm-none-eabi targets fails to build after the reorganization in
baf0c9fcb5 to fold is*_l documentation in their
is* counterpart. This is due two issues:

1) newlib/libc/ctype/ctype.tex still including the def file for the long versions
2) missing angle brackets in .c files for some of is*_l functions

This patch fixes the issues and allows make pdf to succeeds.
2016-08-17 20:58:21 +02:00
Corinna Vinschen b0d341442c Constify __locale_ctype_ptr and __locale_ctype_ptr_l
Remove _MB_CAPABLE-only _CONST in ctype.h

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-17 09:40:28 +02:00
Corinna Vinschen 1c25a777b3 Actually return pointers in locale categroy accessor functions
Commit 6e7ce50 was broken.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 16:23:51 +02:00
Corinna Vinschen 625a8a3f62 Always fall back to __ctype_ptr__ in isXXX_l functions.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 16:22:12 +02:00
Corinna Vinschen 042263cd83 Avoid "implicit declaration of function ‘strtold_l’" in wcstold.c
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 16:21:19 +02:00
Corinna Vinschen 1ec81984d8 Use era_info_t and alt_digits_t on _WANT_C99_TIME_FORMATS targets only
Using era_info_t and alt_digits_t indiscriminately in strftime and
strftime_l breaks targets not wanting C99 time formats.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 15:26:01 +02:00
Corinna Vinschen 6e7ce50e04 Expose locale category accessor functions to non-__HAVE_LOCALE_INFO__ targets.
These functions are used from, e.g., nl_langinfo or strftime, so
we need them for all targets.  Just return "C" locale category for
non-__HAVE_LOCALE_INFO__ targets.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 15:24:26 +02:00
Corinna Vinschen 7ef90f7f9d __localeconv_l: Always define locale variable lconv
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 13:54:32 +02:00
Corinna Vinschen 7964ad15c1 Don't use locale_t in internal header
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-16 13:51:46 +02:00
Corinna Vinschen 238455adfa Implement strto[dflu]_l/wcsto[dflu]_l
Implement GNU extensions strtod_l, strtof_l, strtol_l, strtold_l, strtoll_l,
strtoul_l, strtoull_l, wcstod_l, wcstof_l, wcstol_l, wcstold_l, wcstoll_l,
wcstoul_l, wcstoull_l.

Export from Cygwin, fix posix.xml.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 17:35:21 +02:00
Corinna Vinschen 5ef60b7e6a Add documentation for duplocale, freelocale, newlocale, and uselocale.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 17:34:40 +02:00
Corinna Vinschen baf0c9fcb5 Fold documentation of is*_l funcs into documentation of non-l is* funcs
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 14:21:52 +02:00
Corinna Vinschen 5bdf8cfa49 setlocale/localeconv are *not* POSIX-1.2008
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:59 +02:00
Corinna Vinschen 1a5d08014b setlocale.h: Fix current locale handling for !__HAVE_LOCALE_INFO__ targets
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:59 +02:00
Corinna Vinschen beb721cf37 __loadlocale: Set missing val when evaluating CP874
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:59 +02:00
Corinna Vinschen d7281b92ab Fix multiple thinkos in newlocale
- Setting the categories strings in tmp_locale short-circuits
  __loadlocale.  Use a new_categories array instead, just as in
  _setlocale_r.

- If we have a base, copy over the *not* defined categories in
  category_mask in the first place.  Rearrange loop accordingly.

- Free base right in newlocale.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen 659f4ca916 Fix _REENT_INIT initialization of _locale
Initializing a pointer to struct __locale_t to point to a string "C"
is not such a bright idea in the long run...

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen 18f6750b95 Fix typo in isalnum_l doc
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen ac7f1d5e93 Get rid of LCID, reformat type definitions in setlocale.h
Definition of LCID results in build problems on 32 bit Cygwin

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen 7156bf842e Add sys/_locale.h header and fix up headers
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen 542b970d4e Rename __get_locale_XXX to __get_XXX_locale to use unified naming scheme
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen fb4fb921c6 Move lconv into struct __locale_t and implement __localeconv_l
Based on FreeBSD, just don't export symbol yet, unless required.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen c1b7d9d93d Implement per-locale string functions
strcasecmp_l, strcoll_l, strncasecmp_l, strxfrm_l,
wcscasecmp_l, wcscoll_l, wcstrncasecmp_l, wcstrxfrm_l,
strftime_l.

Add missing CHEWOUT_FILES from previous patch.

TODO: strfmon_l.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:58 +02:00
Corinna Vinschen 8493c16316 Implement all per-locale ctype functions
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen 956565be70 Move localeconv, duplocale, freelocale, newlocale, uselocale into separate files
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen a2ed50381e include/locale.h: Fix POSIX guards
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen cf2cd696da Remove non-working __part_load_locale function and any related code
Add TODO markers in case somebody wants to pick this up again

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen 1afa0fe4b3 Fix memory handling in functions called from loadlocale
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen aefd8b5b51 Implement newlocale, freelocale, duplocale, uselocale
Add global const __C_locale for reference purposes.

Bump Cygwin API minor number and DLL major version number to 2.6.0.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen d4f6cae9cd Use __get_global_locale function where appropriate
Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen 53f84bb5ac Rearrange struct __locale_t pointers into an array
This allows looping through the structs and buffers.  Also
rearrange definitions to follow order of LC_xxx values.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen 1498c79db8 Change loadlocale to fill a __locale_t given as parameter
Don't use global variables.  This allows to call loadlocale from
the yet to be created newlocale().

Rename _thr_locale_t to __locale_t (these locales are not restricted
to threads so the name is misleading).

Along these lines, fix _set_ctype to take a __locale_t as parameter.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen d16a56306d Consolidate wctomb/mbtowc calls for POSIX-1.2008
- Remove charset parameter from low level __foo_wctomb/__foo_mbtowc calls.
- Instead, create array of function for ISO and Windows codepages to point
  to function which does not require to evaluate the charset string on
  each call.  Create matching helper functions.  I.e., __iso_wctomb,
  __iso_mbtowc, __cp_wctomb and __cp_mbtowc are functions returning the
  right function pointer now.
- Create __WCTOMB/__MBTOWC macros utilizing per-reent locale and replace
  calls to __wctomb/__mbtowc with calls to __WCTOMB/__MBTOWC.
- Drop global __wctomb/__mbtowc vars.
- Utilize aforementioned changes in Cygwin to get rid of charset in other,
  calling functions and simplify the code.
- In Cygwin restrict global cygheap locale info to the job performed
  by internal_setlocale.  Use UTF-8 instead of ASCII on the fly in
  internal conversion functions.
- In Cygwin dll_entry, make sure to initialize a TLS area with a NULL
  _REENT->_locale pointer.  Add comment to explain why.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:57 +02:00
Corinna Vinschen 88208d3735 POSIX-1.2008 per-thread locales, groundwork part 2
Move all locale category structure definitions into setlocale.h and remove
other headers in locale subdir.  Create inline accessor functions for
current category struct pointers and use throughout.  Use pointers to
"C" locale category structs by default in __global_locale.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:56 +02:00
Corinna Vinschen a6a477fa81 POSIX-1.2008 per-thread locales, groundwork part 1
Introduce first cut of struct _thr_locale_t used for the locale_t definition.
Introduce global instance called __global_locale used by default.
Introduce internal inline functions __get_global_locale, __get_locale_r,
__get_current_locale.

Remove usage of global variables in favor of accessor functions pointing to
__global_locale for now.  Include all local headers in locale subdir from
setlocale.h to get single include for internal locale access.

Introduce __CTYPE_PTR macro to replace direct access to __ctype_ptr__
and use throughout in isxxx functions.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>
2016-08-15 10:56:56 +02:00
Yaakov Selkowitz 51b669f679 Do not include wctype.h in wchar.h with _GNU_SOURCE
_GNU_SOURCE generally enables all features, but in this case the POSIX
requirement to #include <wctype.h> for these is preferred.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-08-12 13:44:26 -05:00
Yaakov Selkowitz b14a1dbc86 Define va_list in stdio.h and wchar.h
This typedef, along with that of FILE in wchar.h, were XSI prior to
inclusion in POSIX.1-2008.

Fixes: https://sourceware.org/ml/newlib/2016/msg00640.html

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-08-12 11:43:14 -05:00
Yaakov Selkowitz 1e22b408b2 Include wctype.h in wchar.h as an XSI extension
However, note that this inclusion is obsolescent in SUSv4 and therefore
may be removed in the next revision.

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wchar.h.html

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-08-11 16:33:43 -05:00
Yaakov Selkowitz 05aca4d94d Feature test macros overhaul: wctype.h
iswblank was first introduced in C99.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-08-11 14:16:24 -05:00
Yaakov Selkowitz d2e0e14ef7 Feature test macros overhaul: wchar.h, part 2
Many wchar.h functions were never properly guarded; these changes should
make the header fully compliant.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-08-11 11:18:18 +02:00
Anton Kolesov 668033eb9f arc: Fix strcmp for big endian without barrel shifter
strcmp.S contained invalid guard for code that used barrel-shifter optional
instruction - it was checking for !ARC601 instead of whether barrel shifter
is present. While it is true that ARC601 doesn't have barrel shifter, so
does some other ARC EM configurations.

2016-07-21  Anton Kolesov  <Anton.Kolesov@synopsys.com>

	* libc/machine/arc/strcmp.S: Fix big endian without barrel shifter.

Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
2016-08-11 10:59:54 +02:00
Claudiu Zissulescu 7b1080d9aa arc: Use prefetch instead of prealloc.
Prealloc instruction may not be present in all HS variants. Hence, use
prefetch instead of prealloc.

newlib/
2016-04-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* libc/machine/arc/memset-archs.S: Use prefetch.
2016-08-11 10:59:53 +02:00
Claudiu Zissulescu 67c5af5b85 arc: Use unaligned loads/stores for memcopy.
newlib/
2016-04-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* libc/machine/arc/memcpy-archs.S: Add and enable memcpy using
	unaligned loads/stores.
2016-08-11 10:59:53 +02:00
Gedare Bloom 9a80679aae rtems: define _POSIX_CLOCK_SELECTION feature
Enable definition of clock_nanosleep() since it was added to RTEMS.

Signed-off-by: Joel Sherrill <joelemail@rtems.org>
2016-08-08 11:12:23 -05:00
Gedare Bloom 644e40dd9c rtems: add sys/mman.h
This file was copied verbatim from FreeBSD and is in sync
	with the FreeBSD svn version used by rtems-libbsd.

Signed-off-by: Joel Sherrill <joelemail@rtems.org>
2016-08-08 11:11:48 -05:00
Yaakov Selkowitz 52d940e263 math.h: fix guards on basic M_ constants
MAXFLOAT, M_PI, and friends date back to at least XPG4v2, so this guard
was incorrect even prior to the feature test macros overhaul.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2016-07-15 09:06:53 -05:00
Corinna Vinschen 28d393c001 Fix typo in comment added by previous commit
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-07-06 18:23:21 +02:00
Corinna Vinschen a68ca43b90 Redefine locale info in struct _reent for per-thread locales
The _reent members _current_category and _current_locale are not
used at all.  _current_locale is set to "C" in various points of
the code but its value is just as unused as _current_category.

This patch redefines these members without changing the size of the
structure to allow for an implementation of per-thread locales per
POSIX-1.2008 (i.e. uselocale and usage of the per-thread locale in
subsequent function calls).

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-07-06 15:41:35 +02:00
Jon Turney b9ac3c2c8b Regenerate newlib Makefiles 2016-07-04 17:53:06 +01:00
Jon Turney d7e47a557e Regenerate newlib Makefiles 2016-07-04 17:13:55 +01:00
Jon Turney 0b4cbd2fb8 Make newlib manpages (v3)
Add makedocbook, a tool to process makedoc markup and output DocBook XML
refentries.

Process all the source files which are processed with makedoc with
makedocbook as well

Add chapter-texi2docbook, a tool to automatically generate DocBook XML
chapter files from the chapter .texi files.  For generating man pages all we
care about is the content of the refentries, so all this needs to do is
convert the @include of the makedoc generated .def files to xi:include of
the makedocbook generated .xml files.

Add skeleton Docbook XML book files, lib[cm].in.xml which include these
generated chapters, which in turn include the generated files containing
refentries, which is processed with xsltproc to generate the lib[cm].xml

Add new make targets to generate and install man pages from lib[cm].xml
2016-07-04 14:17:10 +01:00
Kuba Sejdak 8a603a697f Phoenix-RTOS: Add caddr_t definition to <sys/types.h>. 2016-06-28 12:47:05 +02:00
Kuba Sejdak 673dd34823 Phoenix-RTOS: Adjust network-related headers to new kernel API. 2016-06-27 13:23:35 +02:00