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* Revert "headers: avoid bareword attributes" for clangEric Blake2017-08-251-14/+16
| | | | | | | | | | | | | | | This reverts most of commit 979d467ff6e39ee5c52cf1aac7a6c9c63058141c. 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>
* Make _CLOCK_T_ system configurableSebastian Huber2017-08-251-0/+3
| | | | | | | Let systems optionally provide the _CLOCK_T_ type via <machine/_types.h>. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* headers: avoid bareword attributesEric Blake2017-08-171-14/+14
| | | | | | | | | 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>
* Add RISC-V port for newlibKito Cheng2017-08-161-1/+1
| | | | | | | | Contributor list: - Andrew Waterman <andrew@sifive.com> - Palmer Dabbelt <palmer@dabbelt.com> - Kito Cheng <kito.cheng@gmail.com> - Scott Beamer <sbeamer@eecs.berkeley.edu>
* cygwin: Set __STDC_ISO_10646__ to Unicode 5.2 valueCorinna Vinschen2017-07-261-4/+3
| | | | | | Now that XP is not supported anymore we can freely do that. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* MSP430: Define __BUFSIZ__ as 256 to prevent default of 1024 being usednewlib-snapshot-20170720Jozef Lawrynowicz2017-07-201-0/+1
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* Feature test macros overhaul: unistd.h, part 2cygwin-2_8_1-releaseYaakov Selkowitz2017-06-301-4/+17
| | | | | | | This fixes commit f70aad3de4d845f8b720010a2f8817db842d81e8 as well as some other functions which were never properly guarded. Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
* Add --enable-newlib-global-stdio-streamsSebastian Huber2017-06-301-0/+6
| | | | Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Enable _REENT_GLOBAL_STDIO_STREAMS for RTEMSSebastian Huber2017-06-301-0/+1
| | | | Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Introduce _REENT_GLOBAL_STDIO_STREAMSSebastian Huber2017-06-301-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* unistd.h: Remove trailing whitespaceDionna Glaze2017-06-291-1/+1
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* unistd.h: remove mktempCorinna Vinschen2017-06-291-1/+0
| | | | | | mktemp is already correctly declared in stdlib.h Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Make gethostname, getdtablesize, mktemp, ualarm available in BSD, ↵Dionna Glaze2017-06-291-2/+5
| | | | XOPEN_SOURCE >= 500.
* Fix guard for siginfo_t and pthread_t definitionThomas Preud'homme2017-06-192-8/+12
| | | | | | | | | | | | | Commit 8a3b3bb4d7224d419cc1a4af60ccf7e70edc876b 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.
* Export XSI sigpauseYaakov Selkowitz2017-06-141-1/+13
| | | | | | | | | | 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>
* Feature test macros overhaul: signal.h (part 3)Yaakov Selkowitz2017-06-141-8/+16
| | | | | | | Notably, sigaction and friends are POSIX, but the form of sigpause currently provided is BSD. Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
* Renumber copyright clause 4imp2017-04-041-1/+1
| | | | | | | | | 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
* queue.3: Document existing QMD_* macroscem2017-04-041-0/+39
| | | | | | Feedback from: bapt, bdrewery, emaste Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D3983
* queue(3): Enhance queue debugging macroscem2017-04-041-5/+37
| | | | | | | | | | | | | 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
* Add two new macros, SLIST_CONCAT and LIST_CONCATmckusick2017-04-041-2/+36
| | | | | | | | | 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
* Make the <sys/queue.h> fully usable within C++hselasky2017-04-041-14/+73
| | | | | | | | | | | | | | | | | | 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
* Pass macro arguments properly.hselasky2017-04-041-2/+2
| | | | MFC after: 1 week
* Fix order of arguments in the TRACEBUF_INITIALIZERhselasky2017-04-041-1/+1
| | | | | | | 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
* Add new FOREACH_FROM variants for queue(3)lstewart2017-04-041-0/+53
| | | | | | | | | | | | | 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
* Renumber copyright clause 4imp2017-04-041-1/+1
| | | | | | | | | 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
* don't use C99 static array indices with older GCC versionsavg2017-04-041-0/+1
| | | | | | | | | | | | | | 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
* Addition of clang nullability qualifiers.pfg2017-04-041-0/+7
| | | | | | | | | | | | | | | 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.
* Remove unused __gnu_inline() attribute.pfg2017-04-041-16/+0
| | | | | | | | | | | | 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
* Addition of clang nullability qualifiers.pfg2017-04-041-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | 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] https://github.com/android/platform_bionic/commit/baa2a973bd776a51bb05a8590ab05d86eea7b321
* Fix C++ includability of crypto headers with static array sizesasomers2017-04-041-0/+14
| | | | | | | | | | | | | | | | | | | | | | 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
* Stop exposing the C11 _Atomic() macro in <sys/cdefs.h>, when compiling for C++.dim2017-04-041-1/+2
| | | | | | | | | | | 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
* Rename __sentinel to __null_sentinelpfg2017-04-041-2/+2
| | | | | | GCC 5 uses a conflicting __sentinel definition in include/c++/bits/stl_algo.h Reported by: matteo
* Rename <sys/_locale.h> to <xlocale.h>Yaakov Selkowitz2017-03-221-12/+0
| | | | | | | | | 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>
* Allow locking routine to be retargetedThomas Preud'homme2017-02-131-2/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Add _POSIX_SHARED_MEMORY_OBJECTSGedare Bloom2017-01-131-1/+1
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* Fix sys/reent.h to remove use of DEBUG flag.Jeff Johnston2017-01-101-2/+2
| | | | | | | | - 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
* Add <devctl.h> per POSIX 1003.26-2003Joel Sherrill2016-12-052-0/+4
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* Move pthread types to <sys/_pthreadtypes.h>Sebastian Huber2016-11-172-226/+234
| | | | | | | | | | 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>
* sys/cdefs.h: Define __hidden as empty on CygwinCorinna Vinschen2016-11-081-0/+5
| | | | | | | 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>
* Provide __intmax_t and __uintmax_tSebastian Huber2016-10-252-14/+10
| | | | | | | | 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>
* Fix typo in <sys/_stdint.h>Sebastian Huber2016-10-251-1/+1
| | | | Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Add _PC_CASE_INSENSITIVE to [f]pathconfKen Brown2016-10-211-0/+1
| | | | | | | | 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>
* Fix off_t typedef on Cygwin64Yaakov Selkowitz2016-08-291-1/+1
| | | | | | | | | | While both long and long long are 64-bits on x86_64, they are distinct types, and long was used prior to commit 477463a2011ba81907a753df9ce7a71b6563db54. 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>
* Fix _REENT_INIT initialization of _localeCorinna Vinschen2016-08-151-3/+2
| | | | | | | 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>
* Add sys/_locale.h header and fix up headersCorinna Vinschen2016-08-152-3/+12
| | | | Signed-off by: Corinna Vinschen <corinna@vinschen.de>
* Change loadlocale to fill a __locale_t given as parameterCorinna Vinschen2016-08-151-3/+3
| | | | | | | | | | | | 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>
* rtems: define _POSIX_CLOCK_SELECTION featureGedare Bloom2016-08-081-0/+1
| | | | | | Enable definition of clock_nanosleep() since it was added to RTEMS. Signed-off-by: Joel Sherrill <joelemail@rtems.org>
* Fix typo in comment added by previous commitCorinna Vinschen2016-07-061-1/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Redefine locale info in struct _reent for per-thread localesCorinna Vinschen2016-07-061-6/+11
| | | | | | | | | | | | | 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>
* sys/time.h: Change visibility of gettimeofday.Corinna Vinschen2016-06-201-1/+2
| | | | | | | gettimeofday is currently guarded with __MISC_VISIBLE || __XSI_VISIBLE. However, gettimeofday should be always visible, as in GLibc. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
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