Move the kernel dependent parts of <sys/time.h> to new system-specific
header file <machine/_time.h>. Provide an empty default implementation.
Add a specialized implementation for RTEMS.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Each version of SUS specifies a different value for _POSIX_VERSION,
_POSIX2_VERSION, and _XOPEN_VERSION. glibc also changes the value
of the other _POSIX2_ variables but not the _POSIX_* variables.
_POSIX_TIMERS should be set to a version number, not just 1.
The _POSIX_V7_* macros were missing, which was not noticed because
the V6 values were aliased in sysconf (<unistd.h>).
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Intel MCU System V ABI are incompartible with i386 System V ABI:
o Minimum instruction set is Intel Pentium ISA minus x87 instructions
o No x87 or vector registers
o First three args are passed in %eax, %edx and %ecx
o Full specification available here:
https://github.com/hjl-tools/x86-psABI/wiki/iamcu-psABI-0.7.pdf
newlib/
* configure.host: Add new ix86-*-elfiamcu target
newlib/libc/include/
* setjmp.h: Change _JBLEN for Intel MCU target
newlib/libc/machine/i386/
* memchr.S: (memchr) Target-specific size-optimized version
* memcmp.S: (memcmp) Likewise
* memcpy.S: (memcpy) Likewise
* memmove.S: (memmove) Likewise
* memset.S: (memset) Likewise
* setjmp.S: (setjmp) Likewise
* strchr.S: (strchr) Likewise
* strlen.S: (strlen) Likewise
newlib/libc/stdlib/
* srtold.c: (__flt_rounds) Disable for Intel MCU
This patch adds the long double functions missing in newlib to Cygwin.
Apart from some self-written additions (exp10l, finite{f,l}, isinf{f,l},
isnan{f,l}, pow10l) the files are taken from the Mingw-w64 math lib.
Minor changes were required, e.g. substitue _WIN64 with __x86_64__ and
fixing __FLT_RPT_DOMAIN/__FLT_RPT_ERANGE for Cygwin.
Cygwin:
* math: New subdir with math functions.
* Makefile.in (VPATH): Add math subdir.
(MATH_OFILES): List of object files collected from building files in
math subdir.
(DLL_OFILES): Add $(MATH_OFILES).
${CURDIR}/libm.a: Add $(MATH_OFILES) to build.
* common.din: Add new functions from math subdir.
* i686.din: Align to new math subdir. Remove functions now commonly
available.
* x86_64.din: Ditto.
* math.h: math.h wrapper to define mingw structs used in some files in
math subdir.
* include/cygwin/version.h: Bump API minor version.
newlib:
* libc/include/complex.h: Add prototypes for complex long double
functions. Only define for Cygwin.
* libc/include/math.h: Additionally enable prototypes of long double
functions for Cygwin. Add Cygwin-only prototypes for dreml, sincosl,
exp10l and pow10l. Explain why we don't add them to newlib.
* libc/include/tgmath.h: Enable long double handling on Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Prototypes also added for initstate() and setstate() but they
were not implemented in the shared newlib code.
* newlib/libc/include/cygwin/stdlib.h: Prototypes added.
* winsup/cygwin/include/cygwin/stdlib.h: Prototypes removed.
* newlib/libc/stdlib/random.c: New file.
* newlib/libc/machine/epiphany/machine/stdlib.h: Removed
* newlib/libc/stdlib/Makefile.am: Added random.c.
* newlib/libc/stdlib/stdlib.tex: Added random.def.
* newlib/libc/stdlib/Makefile.in: Regenerated.
GCCs builtin functions are mostly type agnostic and architecture
indepedent. Prefer to use them if available.
* libc/include/math.h (fpclassify, isfinite, isinf, isnan,
isnormal): Use matching GCC builtin functions if built with
GCC 4.4 or later.
(signbit): Use matching GCC builtin functions if built with
GCC 4.0 or later.
(isgreater, isgreaterequal, isless, islessequal, islessgreater,
isunordered): Use matching GCC builtin functions if built with
GCC 2.97 or later.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
u_char, u_short, u_int, u_long are BSD-only types. Remove them from
Cygwin headers which are supposed to be used in a non-BSD scenario.
Drop special Cygwin handling of those types in sys/types.h.
newlib:
* libc/include/sys/types.h (u_char,u_short,u_int,u_long): Drop
Cygwin exception.
cygwin:
* fhandler_socket.cc (fhandler_socket::ioctl): Accommodate change
in include/asm/socket.h. Continue using u_long since that's the
MS type here.
* include/asm/socket.h: Since the type given in _IOR/_IOW macros
is only used for its sizeof, replace u_long with equivalent long.
* netdb.h (getnetbyaddr): Fix prototype.
* netinet/ip.h: Replace old BSD-only types with generically defined
old BSD types (u_char -> u_int8_t, etc).
* netinet/tcp.h: Ditto.
* netinet/udp.h: Ditto.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The u_intN_t types are BSD types but sanctioned by POSIX. They are
always defined when using Glibc headers so we follow suit.
newlib:
* libc/include/sys/types.h: Drop outdated __INTTYPES_DEFINED__
macro. Always define u_intN_t types.
cygwin:
* include/cygwin/types.h: Remove definition of u_intN_t types.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
While C++11 was the first version of the standard to use C99 functionality,
TR1 (for C++03) also does, and G++ does not distinguish between C++98 and
C++03, or when TR1 is in use. Therefore, while not strictly correct for
"pure" C++98, enabling C99 for all C++ usage is the simplest solution (and
much better than always using -D_GNU_SOURCE as on Linux).
See thread starting: https://sourceware.org/ml/newlib/2016/msg00297.html
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
These types are available in SVID as well.
* libc/include/sys/types.h (u_char,u_short,u_int,u_long): Replace
__BSD_VISIBLE with __MISC_VISIBLE.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
_LARGEFILE_SOURCE, which controls only these two functions, is implicitly
defined by _XOPEN_SOURCE >= 500. However, they are also later added to
POSIX.1-2001 (and therefore available by default).
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
GCC 6.0+ asserts that the memptr argument to the builtin function
posix_memalign is nonnull.
Add the necessary annotation to the prototype and
remove the now unnecessary check to fix a warning.
newlib/Changelog
newlib/libc/include/stdlib.h: Annotate arg to posix_memalign as
non-null.
winsup/cygwin/ChangeLog
malloc_wrapper.cc (posix_memalign): Remove always true nonnull check.
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Move the sig*set macros following the functions inside their feature
test macro conditional.
This fixes the build on bare-metal targets following
commit 5c78499ae2.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Acked-by: Corinna Vinschen <vinschen@redhat.com>
According to the OpenBSD man page, "A Replacement Call for Random". It
offers high quality random numbers derived from input data obtained by
the OpenBSD specific getentropy() system call which is declared in
<unistd.h> and must be implemented for each Newlib port externally. The
arc4random() functions are used for example in LibreSSL and OpenSSH.
Cygwin provides currently its own implementation of the arc4random
family. Maybe it makes sense to use this getentropy() implementation:
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libcrypto/crypto/getentropy_win.c?rev=1.4&content-type=text/x-cvsweb-markup
* libc/include/stdlib.h (arc4random): Declare if __BSD_VISIBLE.
(arc4random_buf): Likewise.
(arc4random_uniform): Likewise.
* libc/include/sys/unistd.h (getentropy): Likewise.
* libc/include/machine/_arc4random.h: New file.
* libc/stdlib/arc4random.c: Likewise.
* libc/stdlib/arc4random.h: Likewise.
* libc/stdlib/arc4random_uniform.c: Likewise.
* libc/stdlib/chacha_private.h: Likewise.
* libc/sys/rtems/include/machine/_arc4random.h: Likewise.
* libc/stdlib/Makefile.am (EXTENDED_SOURCES): Add arc4random.c
and arc4random_uniform.c.
* libc/stdlib/Makefile.in: Regenerate.
This function is used by LibreSSL and OpenSSH and is provided by the
OpenBSD libc.
* libc/include/string.h (timingsafe_memcmp): Declare.
* libc/string/timingsafe_memcmp.c: New file.
* libc/string/Makefile.am: Add new file.
* libc/string/Makefile.in: Regenerate.
This function is used by LibreSSL and OpenSSH and is provided by the
OpenBSD libc.
* libc/include/string.h (timingsafe_bcmp): Declare.
* libc/string/timingsafe_bcmp.c: New file.
* libc/string/Makefile.am: Add new file.
* libc/string/Makefile.in: Regenerate.
This function is used by LibreSSL and OpenSSH and is provided by the
OpenBSD libc.
* libc/include/string.h (explicit_bzero): Declare.
* libc/string/explicit_bzero.c: New file.
* libc/string/Makefile.am: Add new file.
* libc/string/Makefile.in: Regenerate.
This guard is used by FreeBSD <sys/socket.h> for example. The FreeBSD
network stack is used in RTEMS.
* newlib/libc/include/sys/types.h (ssize_t): Guard by
_SSIZE_T_DECLARED.
The u_int/u_char/etc. BSD types are needed by Cygwin's netinet/*.h
headers, so they always need to be available.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
The inclusion of <sys/select.h> is required also by POSIX.1-2001.
setitimer is XSI, and futimesat is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Replace all !_POSIX_SOURCE with BSD. All *at functions depend on
ATFILE; futimens is POSIX.1-2008.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, use proper internal macros for functions, including those
marked as target-specific. Use ATFILE for all *at functions.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, remove __STRICT_ANSI__ and use the proper internal macros.
bcmp, bcopy, bzero, index, and rindex were in POSIX prior to 2008.
memrchr is GNU.
strdup and strndup are POSIX.1-2008.
The int-returning form of strerror_r is POSIX.1-2001.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, simplify the C99/C11 conditionals, and replace
__STRICT_ANSI__ with the proper internal POSIX macros. The _*_r
reentrant functions need not be guarded (and most haven't been) because
such names in the global scope are reserved to the implementation.
atoff is unique to newlib.
dtoa is not actually exported (_dtoa_r is used internally), is
nonstandard, and the declaration conflicts with the code included in
MySQL, NSPR, and SpiderMonkey.
mktemp was removed in POSIX.1-2001.
The qsort_r declarations are reordered so that the GNU version retains
precedence.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, remove references to __STRICT_ANSI__ and use the proper
internal macros and versions for C99, POSIX, ATFILE for the various *at
functions, or LARGEFILE for fseeko and ftello.
[v]asprintf are GNU extensions, but the *iprintf, *iscanf, and
*asnprintf functions are unique to newlib.
getw and putw were removed from POSIX.1-2001. funopen is BSD, and
fopencookie is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Use proper internal macros for BSD sig_t and GNU sighandler_t.
sigaltstack and friends are XSI even in SUSv4 but in glibc are
nonetheless handled as POSIX.1-2008 (not 2001).
The requirement for the ucontext_t typedef in signal.h was XSI prior to
POSIX.1-2008.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Simplify the C99 conditionals. Mark the drem and gamma functions as
BSD|SVID, the Bessel double functions also XSI and the floats also SUSv3.
signgam is BSD|SVID|XSI, and matherr is SVID. Finally, use the internal
macros to control the symbolic constants.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
_PATH_GROUP is a BSDism. getgr*_r are BSD|SVID|POSIX, and the *grent
functions are BSD|SVID|XPG4v2.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Most of the !_POSIX_SOURCE code is BSD, although ironically some were
added to POSIX.1-2001.
Use the ATFILE conditional for most of the *at functions, except
futimesat which is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
MAXNAMLEN is a BSDism.
Use the proper internal macros instead of !_POSIX_SOURCE. telldir and
seekdir are XSI, scandir and alphasort are POSIX.1-2008, and scandirat
is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
This is the complete rework of the feature tests macros for better
compatibility with GNU libc, primarily based on the Linux man pages
documentation:
http://man7.org/linux/man-pages/man7/feature_test_macros.7.html
The previous implementation was flawed in its approach that macros were
often used to hide symbols if defined (e.g. !defined __STRICT_ANSI__ or
!defined _POSIX_SOURCE), whereas the approach of glibc is that these macros
make symbols available when defined (e.g. defined _BSD_SOURCE, or as used
internally, #if __BSD_VISIBLE). As much open-source software is written
with glibc in mind, this necessitated patching numerous packages just to
compile.
In particular, __STRICT_ANSI__ (which is defined by gcc -ansi or -std=c*)
was given too much importance. This implementation limits the influence
of __STRICT_ANSI__ to controlling the default when no other feature test
macros are defined, and to the inclusion of <alloca.h> in <stdlib.h> as
documented. These are the only places where __STRICT_ANSI__ should be
tested.
The following macros are now accepted: _ATFILE_SOURCE, _BSD_SOURCE,
_DEFAULT_SOURCE, _ISOC99_SOURCE, _ISOC11_SOURCE, _LARGEFILE_SOURCE,
_SVID_SOURCE, _XOPEN_SOURCE_EXTENDED.
The existing __*_VISIBLE internal macros have been kept mostly
compatible with the original BSD implementation, with some changes to
the criteria which controls them. Several more macros in this style
have been added where needed for concision or accuracy.
Enabling C++11 or newer in the compiler also enables C99 and C11
functions. Doing so should help move away from the need to define
_GNU_SOURCE in g++ for _GLIBCXX_USE_C99 support as on Linux:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51749
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Per the preceeding comment this inline code is disabled since 1993(!)
because of a bug in GCC at the time. This is long gone and the equivalent
inline code is used in the BSDs for quite some time. Enable this code for
newlib as well.
* libc/include/stdio.h (__sputc_r): Enable GCC inline code. Add
handling for targets defining __SCLE.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Sebastian Huber
Yaakov Selkowitz
Igor Venevtsev
Corinna Vinschen
Joel Sherrill
Peter Foley
Jeff Johnston