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>
Newlib's setvbuf function is very old and has two bugs:
- It sets the SRD/SWR flags incorrectly in case of files opened for
reading and writing.
See https://cygwin.com/ml/cygwin/2016-03/msg00180.html
for a desription of the effect.
- It always sets the buffer size to BUFSIZ if it's not provided by
the application, independent of the optimal blocksize for the
underlying IO device.
Update setvbuf to latest code from OpenBSD to fix both problems.
* libc/stdio/setvbuf.c (setvbuf): Import latest OpenBSD
implementation.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
To fix a long-standing setvbuf bug, import __swhatbuf function from
OpenBSD and only slightly rearrange for newlib.
* libc/stdio/local.h (__swhatbuf_r): Declare.
* libc/stdio/makebuf (__smakebuf_r): New function.
(__smakebuf_r): Drop file handling code and call __smakebuf_r.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
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>
* pthread.h: Add prototypes for pthread_condattr_getclock(),
pthread_condattr_setclock(), pthread_setschedpri(),
pthread_getcpuclockid(), pthread_getconcurrency(), and
pthread_setconcurrency(). Also cleaned up file header to
remove CVS Id string.
* sys/types.h: Add clock ID to pthread_condattr_t.
* libc/include/sys/features.h: Set POSIX option macros from 200112L
to 200809L for Cygwin.
(_POSIX_SPAWN): Set to 200809L for Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Currently, the newlib version information needs to be updated in two places:
- newlib/acinclude.m4
- newlib/libc/include/sys/features.h
The goal of this patch is to:
- supply a single location for defining the newlib version
information: newlib/acinclude.m4
- define __NEWLIB__, __NEWLIB_MINOR__ and __NEWLIB_PATCHLEVEL__
This is in line with what gcc does for its version macros. See:
https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
This patch moves the definition of the _NEWLIB_VERSION, __NEWLIB__
and __NEWLIB_MINOR__ macros from newlib/libc/include/sys/features.h,
to the newly generated newlib/_newlib_version.h file. Additionally,
the __NEWLIB_PATCHLEVEL__ macro was created, for completeness.
In order to stay backwards compatible, newlib/_newlib_version.h gets
included by newlib/newlib.h and newlib/libc/include/sys/features.h.
Note: This patch does _not_ include the modifications to the following
files, as these should all be generated any way.
*Makefile.in,
*aclocal.m4,
*configure
stamp-* files
Signed-off-by: Pieter du Preez <pdupreez@gmail.com>
Any attempt to use isnanf, isinff, or finitef from <ieeefp.h> with
GCC 5 on platforms other than SPU result in a "lvalue required as
unary '&' operand" error.
newlib/libc/
* include/ieeefp.h (__ieeefp_isnanf): Remove broken macro.
(__ieeefp_isinff, __ieeefp_finitef): Ditto.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
This patch fixes the problem reported in
https://cygwin.com/ml/cygwin/2016-02/msg00014.html
The 2009 changes to handle multibyte decimal point and thousands
separator missed to take the length of a multibyte decimal point into
account when computing the field size.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Current mesa expects stdio.h to prototype fileno() when compiling with gcc
-std=c99 -D_XOPEN_SOURCE
Fix the 'POSIX 1003.1:2001' block in stdio.h to prototype functions if not
__STRICT_ANSI__, or _BSD_SOURCE, _POSIX_C_SOURCE or _XOPEN_SOURCE are defined
appropriately
As far as I can tell, despite being in this block, setbuffer() and setlinebuf()
are BSDisms which aren't in POSIX 1003.1:2001
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Non-reentrant system calls version implies both MISSING_SYSCALL_NAMES
and REENTRANT_SYSCALL_PROVIDED macros to be defined.
Being coupled with --enable-newlib-nano-malloc knob it breaks the build:
bash-4.3$ ../newlib-2.3.0.20160104/configure CC_FOR_TARGET=gcc
AR_FOR_TARGET=ar RANLIB_FOR_TARGET=ranlib CFLAGS_FOR_TARGET="-m32
-DMISSING_SYSCALL_NAMES -DREENTRANT_SYSCALLS_PROVIDED"
--target=i386-elf --enable-newlib-nano-malloc && make
<...omitted output...>
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:
In function ‘_mallinfo_r’:
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:489:35:
error: macro "_sbrk_r" requires 2 arguments, but only 1 given
sbrk_now = _sbrk_r(RCALL 0);
^
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:489:20:
error: ‘_sbrk_r’ undeclared (first use in this function)
sbrk_now = _sbrk_r(RCALL 0);
^
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:489:20:
note: each undeclared identifier is reported only once for each
function it appears in
Makefile:1512: recipe for target 'lib_a-nano-mallinfor.o' failed
make[8]: *** [lib_a-nano-mallinfor.o] Error 1
In case of non-reentrant system calls _sbrk_r became a macro with TWO
args (defined in reent.h):
#define _sbrk_r(__reent, __incr) sbrk(__incr)
But in our case only one argument is present. (RCALL 0) is considered
as a single argument despite RCALL itself is a macro:)
So intermediate one-arg macro will be enough to expand args before
final _sbrk_r expansion:
#define _SBRK_R(X) _sbrk_r(X)
Here is a patch:
This fixes the build of krb5 and other packages on Cygwin.
* libc/include/grp.h: Use __BSD_VISIBLE and __XSI_VISIBLE guards.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
libgloss:
* arm/Makefile.in: Add newlib/libc/machine/arm to the include path if
newlib is present.
* arm/arm.h: Include acle-compat.h.
(THUMB_V7_V6M): Rename to ...
(PREFER_THUMB): This. Use ACLE macros __ARM_ARCH_ISA_ARM instead of
__ARM_ARCH_6M__ to decide whether to define it.
(THUMB1_ONLY): Define for Thumb-1 only targets.
(THUMB_V7M_V6M): Rename to ...
(THUMB_VXM): This. Defined based on __ARM_ARCH_ISA_ARM, excluding
ARMv7.
* arm/crt0.S: Use THUMB1_ONLY rather than __ARM_ARCH_6M__,
!__ARM_ARCH_ISA_ARM rather than THUMB_V7M_V6M for fp enabling, and
PREFER_THUMB rather than THUMB_V7_V6M. Rename other occurences of
THUMB_V7M_V6M to THUMB_VXM.
* arm/linux-crt0.c: Likewise.
* arm/redboot-crt0.S: Likewise.
* arm/swi.h: Likewise.
* arm/trap.S: Likewise.
newlib:
* libc/machine/arm/memcpy-stub.c: Use ACLE macros __ARM_ARCH_ISA_THUMB
and __ARM_ARCH_ISA_ARM to check for Thumb-2 only targets rather than
__ARM_ARCH and __ARM_ARCH_PROFILE.
* libc/machine/arm/memcpy.S: Likewise.
* libc/machine/arm/setjmp.S: Likewise for Thumb-1 only target and
include acle-compat.h.
* libc/machine/arm/strcmp.S: Likewise for Thumb-1 and Thumb-2 only
target and include acle-compat.h.
* libc/sys/arm/arm.h: Include acle-compat.h.
(THUMB_V7_V6M): Rename to ...
(PREFER_THUMB): This. Use ACLE macro __ARM_ARCH_ISA_ARM instead of
__ARM_ARCH_6M__ to decide whether to define it.
(THUMB1_ONLY): Define for Thumb-1 only targets.
(THUMB_V7M_V6M): Rename to ...
(THUMB_VXM): This. Defined based on __ARM_ARCH_ISA_ARM, excluding
ARMv7.
* libc/sys/arm/crt0.S: Use PREFER_THUMB rather than THUMB_V7_V6M and
rename THUMB_V7M_V6M into THUMB_VXM.
* libc/sys/arm/swi.h: Likewise.
If small reent is enabled (_REENT_SMALL is defined) then malloc() was
used in __register_exitproc() even if user requested it to be disabled
(_ATEXIT_DYNAMIC_ALLOC is defined). With this fix, function fails when
_ATEXIT_DYNAMIC_ALLOC is defined and whole static storage is already
used.
2015-12-21 Freddie Chopin <freddie.chopin@gmail.com>
* libc/stdlib/__atexit.c (__register_exitproc): Fix for
_ATEXIT_DYNAMIC_ALLOC.
2015-12-21 Freddie Chopin <freddie.chopin@gmail.com>
* libc/stdlib/on_exit_args.{c,h}: New files.
* libc/stdlib/Makefile.am: Add new source file.
* libc/stdlib/Makefile.in: Regenerate.
* libc/stdlib/__atexit.c (__register_exitproc): Initialize
_on_exit_args_ptr field of _GLOBAL_ATEXIT on first run.
* libc/stdlib/on_exit.c: Force linking of static instance of
_on_exit_args.
* libc/stdlib/cxa_atexit.c: Likewise.
GCC for ARC has been updated to provide consistent naming of preprocessor
definitions for different optional architecture features:
* __ARC_BARREL_SHIFTER__ instead of __Xbarrel_shifter for
-mbarrel-shifter
* __ARC_LL64__ instead of __LL64__ for -mll64
* __ARCEM__ instead of __EM__ for -mcpu=arcem
* __ARCHS__ instead of __HS__ for -mcpu=archs
* etc (not used in newlib)
This patch updates assembly routines for ARC to use new definitions instead
of a deprecated ones. To ensure compatibility with older compiler new
definitions are also defined in asm.h if needed, based on deprecated
preprocessor definitions.
*** newlib/ChangeLog ***
2015-12-15 Anton Kolesov <Anton.Kolesov@synopsys.com>
* libc/machine/arc/asm.h: Define new GCC definition for old compiler.
* libc/machine/arc/memcmp-bs-norm.S: Use new GCC defines to detect
processor features.
* libc/machine/arc/memcmp.S: Likewise.
* libc/machine/arc/memcpy-archs.S: Likewise.
* libc/machine/arc/memcpy-bs.S: Likewise.
* libc/machine/arc/memcpy.S: Likewise.
* libc/machine/arc/memset-archs.S: Likewise.
* libc/machine/arc/memset-bs.S: Likewise.
* libc/machine/arc/memset.S: Likewise.
* libc/machine/arc/setjmp.S: Likewise.
* libc/machine/arc/strchr-bs-norm.S: Likewise.
* libc/machine/arc/strchr-bs.S: Likewise.
* libc/machine/arc/strchr.S: Likewise.
* libc/machine/arc/strcmp-archs.S: Likewise.
* libc/machine/arc/strcmp.S: Likewise.
* libc/machine/arc/strcpy-bs-arc600.S: Likewise.
* libc/machine/arc/strcpy-bs.S: Likewise.
* libc/machine/arc/strcpy.S: Likewise.
* libc/machine/arc/strlen-bs-norm.S: Likewise.
* libc/machine/arc/strlen-bs.S: Likewise.
* libc/machine/arc/strlen.S: Likewise.
* libc/machine/arc/strncpy-bs.S: Likewise.
* libc/machine/arc/strncpy.S: Likewise.
Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
Provide a _REENT_INIT_PTR_ZEROED() macro to initialize an already
zero-initialized struct _reent.
* libc/include/sys/reent.h (_REENT_INIT_PTR_ZEROED): New.
(_REENT_INIT_PTR): Define only once and use _REENT_INIT_PTR_ZEROED().
* libc/include/sys/_sigset.h: New.
* libc/include/sys/select.h: Do not include <sys/types.h> and
<sys/time.h> to avoid cyclic header file dependencies. Include
specialized header files instead.
(sigset_t): Conditionally define.
* libc/include/sys/signal.h (sigset_t): Likewise.
* libc/include/sys/time.h: Include <sys/select.h> if
__BSD_VISIBLE.
* libc/include/sys/types.h: Likewise.
In some code paths the __atexit_lock held by this function was not
released when returning with an error.
* libc/stdlib/__atexit.c (__register_exitproc): Always release
lock before return.
Currently, double precision math functions in newlib/libm/machine/arm detect whether neon instructions can be used for double precision computation by checking the architecture version (>= 8) and the availability of floating-point instructions. However, these instructions would not be available if targeting fpv5-sp-d16 as the FPU, which by definition does not have 64bit float instructions. This patch adds a check that __ARM_FP advertises 64bit float instructions.
* libm/machine/arm/s_ceil.c: Also check that 64bit FP instructions are
available in the guard.
* libm/machine/arm/s_floor.c: Likewise.
* libm/machine/arm/s_nearbyint.c: Likewise.
* libm/machine/arm/s_rint.c: Likewise.
* libm/machine/arm/s_round.c: Likewise.
* libm/machine/arm/s_trunc.c: Likewise.
* libc/stdio/freopen.c (_freopen_r): Only reset __SWID bit per SUSv4.
* libc/stdio64/freopen64.c (_freopen64_r): Add missing resetting of
flag values and _mbstate.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* libc/include/sys/types.h: Move definitions of NBBY and howmany to
sys/param.h. Move definitions of select(2) macros to sys/select.h.
* libc/include/sys/param.h: See above.
* libc/include/sys/select.h: Move Cygwin's sys/select.h here.
* include/sys/select.h: Move select(2) macros from newlib's sys/types.h
here. Rename howmany to _howmany to unclutter namespace. Move file to
newlib.
* libc/rexex.cc: Add declaration for cygwin_gethostname.
* poll.cc: Include sys/param.h and locale select.h.
* select.h (cygwin_select): Declare.
* uname.cc: Declare cygwin_gethostname.
* winsup.h: Drop declarations of cygwin_select and cygwin_gethostname.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Reformulate the strcmp-armv7.S selection logic around the architecture
features required by the implementation code rather (some) version of
the architecture that expose those features.
The patch moves the inline ASM thumb2 -Os implementation out into its
own .S file.
Tested by building newlib and comparing libc.a binaries before and
after for all permutations of:
Architectures:
armv4 armv4t armv5 armv5t armv5te armv6 armv6j armv6k
armv6z armv6kz armv6t2 armv6-m armv6s-m armv7 armv7-a
armv7ve armv7-r armv7-m armv7e-m armv8-a iwmmxt iwmmxt2
ISAs:
thumb arm
Optimization Levels:
Os O2
Excluding:
armv6s-m -mthumb
armv6-m -mthumb
armv6zk -mthumb
armv6z -mthumb
armv6k -mthumb
armv6j -mthumb
- move the description of the alternative form produced with the # flag from a
nested table to an additional table
2015-11-12 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdio/sprintf.c: Simplify documentation markup.
* libc/stdio/swprintf.c: Ditto.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
- use bullet points to separate width, size and type sections, rather than using
rows in an enormous table, for consistency with sprintf and swprintf.
- use code markup for size bullet point for consistency
- use a texinfo multitable for description of the size flags, rather than some
preformatted text
- tidy up some whitespace so type flags are all aligned
2015-11-12 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdio/sscanf.c: Improve documentation markup.
* libc/stdio/swscanf.c: Ditto.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
The patch moves the inline ASM thumb1 -O2 implementation out into its
own .S file.
Tested by building newlib and comparing libc.a binaries before and
after for all permutations of:
Architectures:
armv4 armv4t armv5 armv5t armv5te armv6 armv6j armv6k
armv6z armv6kz armv6t2 armv6-m armv6s-m armv7 armv7-a
armv7ve armv7-r armv7-m armv7e-m armv8-a iwmmxt iwmmxt2
ISAs:
thumb arm
Optimization Levels:
Os O2
Excluding:
armv6s-m -mthumb
armv6-m -mthumb
armv6zk -mthumb
armv6z -mthumb
armv6k -mthumb
armv6j -mthumb
The patch adds strlen.S to contain the complementary preprocessor
logic to strlen-stub.c intended to provide #inclusion of alternative
.S implementations.
Initially we just include the existing strlen-armv7.S implementation.
We rewrite _ISA_ARMV7 in both strlen.S and strlen-stub.c to use the
underlying existing underlying defintion from arm_asm.h in order to
avoide including that file, this is in effect the first step towards a
move to ACLE predefines only.
Tested by building newlib and comparing libc.a binaries before and
after for all permutations of:
Architectures:
armv4 armv4t armv5 armv5t armv5te armv6 armv6j armv6k
armv6z armv6kz armv6t2 armv6-m armv6s-m armv7 armv7-a
armv7ve armv7-r armv7-m armv7e-m armv8-a iwmmxt iwmmxt2
ISAs:
thumb arm
Optimization Levels:
Os O2
Excluding:
armv6s-m -mthumb
armv6-m -mthumb
armv6zk -mthumb
armv6z -mthumb
armv6k -mthumb
armv6j -mthumb
In order to maintain consistency both within machine/arm and between
machine/arm and machine/aarch64, rename the 'c' stub to -stub.c.
Tested by building newlib and comparing libc.a binaries before and
after for all permutations of:
Architectures:
armv4 armv4t armv5 armv5t armv5te armv6 armv6j armv6k
armv6z armv6kz armv6t2 armv6-m armv6s-m armv7 armv7-a
armv7ve armv7-r armv7-m armv7e-m armv8-a iwmmxt iwmmxt2
ISAs:
thumb arm
Optimization Levels:
Os O2
Excluding:
armv6s-m -mthumb
armv6-m -mthumb
armv6zk -mthumb
armv6z -mthumb
armv6k -mthumb
armv6j -mthumb
This patch flattens the condition code selection used in strlen in an
attempt to make the guarding condition for each alternative
implementation clearer and to structure the logic in a manner that
makes it easier to maintain complementary logic between the
alternative 'C' and assembler implementations.
Tested by building newlib and comparing libc.a binaries before and
after for all permutations of:
Architectures:
armv4 armv4t armv5 armv5t armv5te armv6 armv6j armv6k
armv6z armv6kz armv6t2 armv6-m armv6s-m armv7 armv7-a
armv7ve armv7-r armv7-m armv7e-m armv8-a iwmmxt iwmmxt2
ISAs:
thumb arm
Optimization Levels:
Os O2
Excluding:
armv6s-m -mthumb
armv6-m -mthumb
armv6zk -mthumb
armv6z -mthumb
armv6k -mthumb
armv6j -mthumb
Regression testing newlib in conjunction with libgloss and
--enable-multilib can result in incompatible multilib versions of
newlib and libgloss being used during link.
This manifests on ARM target when newlib regression is run using a
GCC configured using --with-multilib-list=aprofile
With this configuration many of the multilib variants built are
mutually incompatible.
The issue is that the newlib dejagnu foo iterates each multilib
variant and correctly chooses the appropriate newlib variant but
always chooses the root/base libgloss variant.
The implementation of newlib/testsuite/lib/flags.exp contains the
following fragment:
set target_build_path "$objdir/$multibuildtop.."
The effect of this fragment is to explicitly select the root version
of libgloss, irrespective of the current multilib.
Digging around in VC it appears that the original implementation of
multlib magic came into the tree back in 2002 with:
6e9d950a (Thomas Fitzsimmons 2002-05-01 17:06:25 +0000 39)
In this initial version of multilib support, newlib was multilib
capable, but libgloss was not multilib capable, hence the necessity to
explicitly select the root libgloss version.
Subsequently flags.exp was modified to support out of tree testing:
cec1d3b4 (Jeff Johnston 2005-07-05 00:11:50 +0000 25)
This change is orthogonal to this issue, its effect is to exit early
in none multilib configurations.
Subsequently libgloss gained --enable-multilib support, the relevant
change is:
https://sourceware.org/ml/newlib/2006/msg00440.html
commit 00a4b31ad0
Author: Jeff Johnston <jjohnstn@redhat.com>
Date: Wed May 10 20:51:41 2006 +0000
This change enabled multilib support throughout libgloss, but ommitted
to adjust the flag.exp behaviour which anchors the libgloss multilib
selection to the base version.
The attached patch adjusts flags.exp to select the current multilib
variant of libgloss.
2015-11-06 Marcus Shawcroft <marcus.shawcroft@arm.com>
* testsuite/lib/flags.exp (libgloss_link_flags): Drop multilibtop
from target_build_path.
Align makedoc's iscommand() with it's documentation, and don't allow commands to
contain a space. A command is a line containing only a sequence of capital
letters or '_', followed by optional spaces.
This prevents "IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE" (the only line in the license text which consists of only
capitals and spaces, without any punctuation) from being interepreted as a
makedoc command, leading to:
"Can't find IMPLIED"
"warning, IMPLIED is not recognised"
being emitted by makedoc, (which is normally un-noticed because makedoc's stderr
is redirected to a .ref file)
2015-11-06 Jon Turney <jon.turney@dronecode.org.uk>
* doc/makedoc.c (iscommand): Only allow commands to have trailing
spaces, not space separated words.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
makedoc defines a command as 'all upper case, and alone on a line'.
A few QUICKREF lines currently violate this by having some additional text after
the QUICKREF.
So, currently, these lines are treated as an unknown command.
This is benign as QUICKREF currently does nothing but produce some ignored
output on stderr. I'm not sure what the intent of QUICKREF is.
2015-11-06 Jon Turney <jon.turney@dronecode.org.uk>
* libm/mathfp/s_acos.c: Fix QUICKREF.
* libm/mathfp/e_acosh.c: Ditto.
* libm/math/w_asin.c: Ditto.
* libm/mathfp/e_acosh.c: Ditto.
* libm/mathfp/s_acos.c: Ditto.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
The unused INTERNAL_DEFINITION, INTERNAL_FUNCTION and INTERNAL commands are
defined in terms of the non-existent built-in 'func'
This causes every single invocation of makedoc to output "Can't find func" three
times, as it parses doc.str.
This is normally un-noticed because makedoc's stderr is redirected to a .ref
file.
Fix these unused command definitions to something with equivalent lack of
effect, but without generating an error.
2015-11-06 Jon Turney <jon.turney@dronecode.org.uk>
* doc/doc.str: Fix INTERNAL_DEFINITION, INTERNAL_FUNCTION and
INTERNAL.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
ARM newlib has various strcmp implementations that use .cfi_*
directives to generate unwind information.
The effect of this is that the generated objects contain .eh_frame
sections. However, ARM uses its own unwind info format, not
.eh_frame, which is generated by ARM-specific directives, not .cfi_*.
The .eh_frame sections are useless, but also not removed by strip and
may be loaded into memory at runtime.
This patch fixes this by using .cfi_sections .debug_frame (as in
glibc) so that the directives generate .debug_frame instead.
.debug_frame is useful for the debugger, can be removed by strip, and
is not loaded into memory at runtime.
* libc/machine/arm/strcmp-arm-tiny.S: Use .cfi_sections
.debug_frame.
* libc/machine/arm/strcmp-armv4.S: Likewise.
* libc/machine/arm/strcmp-armv4t.S: Likewise.
* libc/machine/arm/strcmp-armv6.S: Likewise.
* libc/machine/arm/strcmp-armv6m.S: Likewise.
* libc/machine/arm/strcmp-armv7.S: Likewise.
* libc/machine/arm/strcmp-armv7m.S: Likewise.
The patch cleans up the auto configury mechanism used to select
different implementations of memchr for various architecture versions.
The approach here is to remove the selection of memchr within automake
and instead use complimentary logic in memchr-stub.c and memchr.S to
choose between the gerneric memchr.c implementation or one of the
architecture specific implementations.
This patch also changes the selection criteria inline with the
previous proposal here:
https://sourceware.org/ml/newlib/2015/msg00752.html
but using the ACLE predefines.
Regressed for armv7-a armv5 armv8-a, correct selection of memcpy
implementation by manual inspection of a test program built for these
three architectures.
This patch cleans up the auto configury mechanism used to select
different implementations of memcpy for various architecture versions.
The approach here is to remove the selection of memcpy within automake
and instead use complimentary logic in memcpy-stub.c and memcpy.S to
choose between the generic memcpy.c implemenation or one of the
architecture specific memcpy*.S implemenations.
Regressed for armv7-a armv5 armv8-a, correct selection of memcpy
implementation by manual inspection of a test program built for these
three architectures.
This revised patch flips the remaining preprocessor logic in
memcpy-stub.c to use ACLE defines as requested in the previous review
and removes the now disused HAVE_ARMV7A and HAVE_ARMV8A configure.in
support.
The newlib configury logic that detects architecture version and
chooses an appropriate memcpy implementation does not consider
ARMv8-a.
This patch adds configury logic to detect ARMv8-a along with the
associated changes in Makefile.am and memcpy.
This is mandated by POSIX.
2015-10-30 Sebastian Huber <sebastian.huber@embedded-brains.de>
libc/include/pthread.h: Include <sched.h> instead of
<sys/sched.h>.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
aligned_alloc() is implemented in terms of posix_memalign() which is
only declared in <stdlib.h> but not defined in Newlib in general. At
least Linux and RTEMS implement this function.
newlib/ChangeLog
2015-10-14 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/stdlib/Makefile.am (GENERAL_SOURCES): Add
alloc_aligned.c.c.
* libc/stdlib/Makefile.in: Regenerate.
* libc/stdlib/aligned_alloc.c: New.
Import some <stdlib.h> function declarations from latest FreeBSD and
implement them. I am not sure if we should call the global reent
cleanup in quick_exit() similar to exit().
newlib/ChangeLog
2015-10-14 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/include/stdlib.h (at_quick_exit): Declare.
(quick_exit): Likewise.
* libc/stdlib/Makefile.am (GENERAL_SOURCES): Add
quick_exit.c.
* libc/stdlib/Makefile.in: Regenerate.
* libc/stdlib/quick_exit.c: New.
- Move types and defines to
<machine/_threads.h> so that it can be customized per target.
* libc/include/threads.h: New.
* libc/sys/rtems/include/machine/_threads.h: Likewise.
* include/sys/unistd.h (_SC_LEVEL*): Add cache-related variables as
on Linux.
* fhandler_proc.cc (format_proc_cpuinfo): Fetch cache information
from new cache functions in sysconf.cc, get_cpu_cache_intel and
get_cpu_cache_amd.
* sysconf.cc (__nt_query_system): New local helper.
(get_nproc_values): Utilize __nt_query_system on pre-Windows 7 systems.
Use GetLogicalProcessorInformationEx otherwise to handle more than
64 CPUs. Only handle _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN.
(get_phys_pages): New helper to handle _SC_PHYS_PAGES.
(cpuid2_cache_descriptor): New array to map Intel CPUID 2 descriptor
values to cache type, cache size, associativity and linesize.
(cpuid2_cache_desc_compar): Comparision function for bsearch over
cpuid2_cache_descriptor.
(get_cpu_cache_intel_cpuid2): New function to fetch cache info from
Intel CPUID 2.
(get_cpu_cache_intel_cpuid4): Ditto from Intel CPUID 4.
(get_cpu_cache_intel): New function as CPU-specific entry point.
(assoc): New array to map associativity values from AMD CPUID
0x80000006.
(get_cpu_cache_amd): New function to fetch cache info from AMD CPUIDs
0x80000005 and 0x80000006.
(get_cpu_cache): New function to fetch cache info.
(sca): Call get_phys_pages if _SC_PHYS_PAGES is requested. Call
get_cpu_cache for new _SC_* cache requests.
(SC_MAX): Set to _SC_LEVEL4_CACHE_LINESIZE.
(get_phys_pages(void)): Call get_phys_pages(int).
* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
* new-features.xml (ov-new2.3): Document sysconf cache addition.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Hi!
I've got the situation, that the function strlen() occurs twice in libc.a
(building newlib for ARM-V7a and Size-Optimized).
In newlib/libc/machine/arm/strlen.c there are the pre-processor stetements ...
#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) || \
(defined (__thumb__) && !defined (__thumb2__))
/*...*/
#else
#if !(defined(_ISA_ARM_7) || defined(__ARM_ARCH_6T2__))
/*...*/
#endif
and in newlib/libc/machine/arm/strlen-armv7.S the "exclude" begins with
/* NOTE: This ifdef MUST match the ones in arm/strlen.c
We fallback to the one in arm/strlen.c for size optimised or
for older architectures. */
#if defined(_ISA_ARM_7) || defined(__ARM_ARCH_6T2__) && \
!(defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) || \
(defined (__thumb__) && !defined (__thumb2__)))
But this is not completely contrary to arm/strlen.c (see above)!
To fix the logical statement in arm/strlen-armv7.S there are parentheses needed
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Hi,
As I mentioned recently [1], newlib is providing a "kill" symbol to link
against, without declaring "kill" in signal.h. This is confusing for the
libgfortran build, which tries to link against kill (which succeeds), then
tries to use it (which triggers -Werror=implicit-function-declaration).
This patch implements my suggestion in that thread - making the declaration
of 'kill' in libc/include/sys/signal.h unconditional.
I've tested this by building a modified libgfortran on AArch64/ARM to see
that the Werror goes away, and the libgfortran build succeeds.
Is something like this OK for newlib? If so, can someone please commit
it on my behalf, as I have no commit access here.
Otherwise, what is your preferred direction for me to take this patch?
Thanks,
James
On 11/08/2015 11:08, Andre Vieira wrote:
> On 10/08/15 14:38, Jon TURNEY wrote:
>> On 07/08/2015 11:13, Andre Vieira wrote:
>>> Building the manuals on Ubuntu LTS 14.04 (64-bit) using pdfTeX
>>> 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) is failing with the
>>> following error:
>>> "Transcript written on libc.log.
>>> /usr/bin/texi2dvi: pdfetex exited with bad status, quitting."
>>>
>>> libc.log complaints about the following:
>>>
>>> You can't use `@unskip' in vertical mode.
>>>
[...]
>>>
>>> This code has been around for a while, so it might have to do with a
>>> change in pdfTex?
So it seems this problem has been around for a while, and looks like it
is due to a change in texi2dvi in texinfo 5.0 or late 4.x, see [1].
I guess it's not very noticeable since it only occurs when doing 'make
dvi', which doesn't happen by default.
Attached is a different and perhaps cleaner workaround to the one in
that thread.
[1] https://sourceware.org/ml/newlib/2013/msg00057.html
From 4d386b5900b6c68e022004b447faa696be5ff8c7 Mon Sep 17 00:00:00 2001
From: Jon TURNEY <jon.turney@dronecode.org.uk>
Date: Tue, 11 Aug 2015 14:46:39 +0100
Subject: [PATCH] Use '@sp 1' rather than '@*' to workaround a change in
texi2dvi.
Since about TexInfo 5.0, using '@*' immediately after a table causes a 'You
can't use `@unskip' in vertical mode' error.
See https://sourceware.org/ml/newlib/2013/msg00057.html
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
On 31/07/15 10:34, Richard Earnshaw wrote:
> On 31/07/15 10:28, Andre Vieira wrote:
>> newlib/ChangeLog:
>> 2015-07-28 Andre Vieira <andre.simoesdiasvieira@arm.com>
>>
>> * libc/sys/arm/sys/param.h: Include machine/param.h
>> (HZ, NOFILE, PATHSIZE): Define.
>>
>> param_refactor_1.patch
>>
>>
>> From abc2d5f3398721f6ca891b9581feaba58730b19c Mon Sep 17 00:00:00 2001
>> From: Andre Simoes Dias Vieira <andsim01@arm.com>
>> Date: Tue, 28 Jul 2015 12:10:59 +0100
>> Subject: [PATCH 1/2] Moved param configuration to machine/param.h
>>
>> ---
>> newlib/libc/sys/arm/sys/param.h | 12 ++++++++++--
>> 1 file changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/newlib/libc/sys/arm/sys/param.h b/newlib/libc/sys/arm/sys/param.h
>> index adc066e9a8756e07edaaa8cadc79b5f05c996ac9..622c371972ab3c9dbb93ea5c51323a593e2a171a 100644
>> --- a/newlib/libc/sys/arm/sys/param.h
>> +++ b/newlib/libc/sys/arm/sys/param.h
>> @@ -3,9 +3,17 @@
>> #ifndef _SYS_PARAM_H
>> # define _SYS_PARAM_H
>>
>> -# define HZ (100)
>> -# define NOFILE (60)
>> +#include <machine/param.h>
>> +
>> +#ifndef HZ
>> +# define HZ (60)
>
> Why have you changed the value for HZ? It seems that, by convention,
> ARM boards have always used 100.
>
> R.
>
>> +#endif
>> +#ifndef NOFILE
>> +# define NOFILE>(60)
>> +#endif
>> +#ifndef PATHSIZE
>> # define PATHSIZE (1024)
>> +#endif
>>
>> #define BIG_ENDIAN 4321
>> #define LITTLE_ENDIAN 1234
>>
>
Hi Richard,
ARM's machine/param.h that is included in "#include <machine/param.h>",
before the 'ifndef' already defines HZ to be 100. This file was already
there, it was just not being used. I understand that this 'ifndef' might
be confusing, though I decided to add it to mimic the behavior of the
default sys/param.h.
There is however an unrelated issue with this patch, a typo in the
"#define NOFILE" that crept in there due to some copy pasting when
splitting the patch.
Here is a fixed version.
BR,
Andre
newlib/ChangeLog:
2015-07-28 Andre Vieira <andre.simoesdiasvieira@arm.com>
* libc/sys/arm/sys/param.h: Include machine/param.h
(HZ, NOFILE, PATHSIZE): Define.
From abc2d5f3398721f6ca891b9581feaba58730b19c Mon Sep 17 00:00:00 2001
From: Andre Simoes Dias Vieira <andsim01@arm.com>
Date: Tue, 28 Jul 2015 12:10:59 +0100
Subject: [PATCH 1/2] Moved param configuration to machine/param.h
* libc/include/sys/signal.h [__CYGWIN__]: include <sys/ucontext.h>
if compiling for POSIX.1-2008.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Only on first call to the recursive malloc lock the restore value of
exception enable fields is stored.
* libc/sys/or1k/mlock.c: Fix exception enable saving
Fix documentation build since 6c2b1842 by not including stdio64 functions in the
reent syscalls menu if the node itself isn't going to be included because it's
under the STDIO64 flag.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Sorry, there was a typo in <sys/lock.h> which leads to memory corruption
since not enough space is reserved for the lock object.
newlib/ChangeLog
2015-07-30 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/sys/rtems/include/sys/lock.h (__LOCK_INIT_RECURSIVE): Use
proper type.
This is an optimized memset for AArch64. Memset is split into 4 main
cases: small sets of up to 16 bytes, medium of 16..96 bytes which are
fully unrolled. Large memsets of more than 96 bytes align the
destination and use an unrolled loop processing 64 bytes per
iteration. Memsets of zero of more than 256 use the dc zva
instruction, and there are faster versions for the common ZVA sizes 64
or 128. STP of Q registers is used to reduce codesize without loss of
performance.
During libgcc build the first include search path for <...> is
"../newlib/libc/sys/rtems/include". Move all RTEMS specific header
files to "libc/sys/rtems/include" so that they can be found. Later
during libc build the header files in the previous location were somehow
present, but for libgcc build they were invisible. This change is
necessary to use <pthread.h> for the GCC thread model implementation.
newlib/ChangeLog
2015-07-27 Sebastian Huber <sebastian.huber@embedded-brains.de>
libc/sys/rtems/machine/_types.h: Move to ...
libc/sys/rtems/include/machine/_types.h: ... here.
libc/sys/rtems/machine/limits.h: Move to ...
libc/sys/rtems/include/machine/limits.h: ... here.
libc/sys/rtems/machine/param.h: Move to ...
libc/sys/rtems/include/machine/param.h: ... here.
libc/sys/rtems/sys/cpuset.h: Move to ...
libc/sys/rtems/include/sys/cpuset.h: ... here.
libc/sys/rtems/sys/dirent.h: Move to ...
libc/sys/rtems/include/sys/dirent.h: ... here.
libc/sys/rtems/sys/param.h: Move to ...
libc/sys/rtems/include/sys/param.h: ... here.
libc/sys/rtems/sys/syslimits.h: Move to ...
libc/sys/rtems/include/sys/syslimits.h: ... here.
libc/sys/rtems/sys/utime.h: Move to ...
libc/sys/rtems/include/sys/utime.h: ... here.
This got removed everywhere else in commit 139f923b, so I'm assuming whatever
ancient bug this was has been fixed long since.
There are plenty of other uses of texinfo with a filename containing an
underscore now.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
We use texinfo nodes beginning with an underscore in several other places, so
revert this ancient workaround for a no longer existing bug, and use the makedoc
generated texinfo for reentrant versions of syscalls, rather than handwritten
documentation.
Also alphabetically sort these functions.
Also add documentation for _execve_r, _getpid_r, _kill_r and _times_r functions,
whose non-reentrant versions are documented as stubs
v2:
Keep _open64_r, _lseek64_r and _fstat64_r functions under texinfo conditional STDIO64
Add _stat64_r function likewise.
Notes:
1. The handwritten prototypes give the reentrancy structure pointer as of type
void *, rather than the presumably more correct struct __reent *
2. The fcntl, gettimeofday, mkdir and rename functions are not documented as
stubs, so I haven't added the reentrant versions either
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
makedoc requires a NEWPAGE command to preceed the second and subsequent FUNCTION
commands in a file in order to produce the correct texinfo output.
Add missing NEWPAGE commands needed in reent/execr.c. and reent/signalr.c, which
contain makedoc markup for multiple functions.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
* libc/include/machine/setjmp.h (siglongjmp): Declare as function on
Cygwin.
(sigsetjmp): Ditto.
(_longjmp): Mark as noreturn function on Cygwin.
* common.din (siglongjmp): Export.
(sigsetjmp): Export.
* gendef: Change formatting of some comments.
(sigsetjmp): Implement.
(siglongjmp): Implement.
(__setjmpex): x86_64 only: Drop entry point.
(setjmp): x86_64 only: Store tls stackptr in Frame now, store MXCSR
and FPUCW registers in Spare, as MSVCRT does.
(longjmp): x86_64 only: Restore tls stackptr from Frame now, restore
MXCSR and FPUCW registers from Spare.
* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
* new-features.xml (ov-new2.2): Document sigsetjmp, siglongjmp.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This is an optimized memset for AArch64. Memset is split into 4 main
cases: small sets of up to 16 bytes, medium of 16..96 bytes which are
fully unrolled. Large memsets of more than 96 bytes align the
destination and use an unrolled loop processing 64 bytes per
iteration. Memsets of zero of more than 256 use the dc zva
instruction, and there are faster versions for the common ZVA sizes 64
or 128. STP of Q registers is used to reduce codesize without loss of
performance.
This is an optimized memcpy for AArch64. Copies are split into 3 main
cases: small copies of up to 16 bytes, medium copies of 17..96 bytes
which are fully unrolled. Large copies of more than 96 bytes align
the destination and use an unrolled loop processing 64 bytes per
iteration. In order to share code with memmove, small and medium
copies read all data before writing, allowing any kind of overlap. On
a random copy test memcpy is 40.8% faster on A57 and 28.4% on A53.
This is an optimized memmove for AArch64. All copies of up to 96
bytes and all backward copies are done by the new memcpy. The only
remaining case is large forward copies which are done in the same way
as the memcpy loop, but copying from the end rather than the start.
As a commonly-included header, the #define basename in <string.h> can
affect code which uses "basename" for its own purposes (e.g. struct
members or C++ namespaced functions). When such cases occur and some
code includes <string.h> and some not, then errors result. OTOH,
<libgen.h> is rarely used, and that's where the renaming occurs in
glibc, so code using <libgen.h> should already be safe.
* libc/include/libgen.h (basename): Define as __xpg_basename
for source compatibility with glibc.
Declare with __ASMNAME("basename") for ABI compatibility.
* libc/include/string.h (basename): Define as basename for
source compatibility with glibc.
Declare with __ASMNAME("__gnu_basename") for ABI compatibility.
https://sourceware.org/ml/newlib/2015/msg00520.html describes
how sys/time.h uses __BSD_VISIBLE while the types used in the
affected inline functions are guarded with !_POSIX_SOURCE.
Fix that by guarding the type with __BSD_VISIBLE as well.
* libc/include/sys/time.h: Explicitely include sys/cdefs.h.
* libc/include/sys/types.h: Ditto. Guard BSD convenience base types
with __BSD_VISIBLE rather than !_POSIX_SOURCE.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The CHECK_INIT() is necessary before the _newlib_flockfile_start() since
this would use otherwise acquire an uninitialized lock which gets
initialized after this leading to a corrupt release.
newlib/ChangeLog
2015-07-01 Sebastian Huber <sebastian.huber@embedded-brains.de>
libc/stdio/fputs.c (_puts_r): Add missing CHECK_INIT().
libc/stdio/gets.c (_gets_r): Add missing _REENT_SMALL_CHECK_INIT() and
CHECK_INIT(). Use _stdin_r() to get the file pointer instead of stdin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
These source files have makedoc markup, but aren't listed to be chewed by
makedoc. I am assuming that is accidental.
Future work: Note that stdio/fseeko.c, stdio/ftello.c and common/s_isnand.c have
makedoc markup, but duplicate stdio/fseek.c, stdio/ftell.c and common/s_isnan.c
respectively.
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/ctype/Makefile.am (CHEWOUT_FILES): Add isblank.def.
* libc/ctype/ctype.tex: Include isblank and add to menu.
* libc/posix/Makefile.am (CHEWOUT_FILES): Add posix_spawn.def.
* libc/posix/posix.tex: Include posix_spawn and add to menu.
* libc/stdio64/Makefile.am (CHEWOUT_FILES): Add fdopen.def.
* libc/stdio64/stdio64.tex: Include fdopen64 and add to menu.
* libc/stdio64/fdopen64.c: Improve one-line description.
* libc/string/Makefile.am (CHEWOUT_FILES): Add strchrnul.def.
* libc/string/strings.tex: Include strchrnul and add to menu.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
I think these are accidental omissions, as these source files are listed to be
chewed by makedoc, but the result is not included by any texinfo source file.
Future work: Nothing in libc/reent/ which is processed by makedoc is included by
reent.tex
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdlib/stdlib.tex: Include itoa and utoa, and add to menu.
* libc/string/strings.tex: Include memrchr and rawmemchr, and add
to menu.
* libm/math/math.tex: Include exp10 and pow10, and add to menu.
* libm/common/s_exp10.c: Improve one-line description.
* libm/common/s_exp10.c: Ditto.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Don't chew files which contain no documentation markup.
Neither of the alternatives for MALLOCR (mallocr.c or nano-mallocr.c) contain
any documentation markup.
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdlib/Makefile.am (CHEWOUT_FILES): Remove $(MALLOCR).def.
* libc/stdio/Makefile.am (CHEWOUT_FILES): Remove getwc.def and
putwc.def.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Fix typo-ed function names in efgcvt.c documentation, neither gvcvt nor gdvtf
exists.
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdlib/efgcvt.c: Fix typo-ed function names in
documentation.
* libc/stdlib/stdlib.tex: Fix function name in menu to match.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Fix an inconsistent use of '.' to separate function names in FUNCTION. ',' is
used everywhere else.
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdio/fread.c: Fix inconsistent use of '.' to separate
function names in FUNCTION mark up.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdlib/llabs.c: Mark up parameter name in ANSI_SYNOPSIS.
* libc/time/tzset.c: Add and mark up parameter in SYNOPSIS.
* libm/common/s_nan.c: Ditto.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/stdio/getchar_u.c: Fix a non-ANSI prototype in SYNOPSIS.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/string/wcscpy.c: Remove stray ',' from prototype in
ANSI_SYNOPSIS.
* libc/string/wcpcpy.c: Ditto.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2015-06-23 Jon Turney <jon.turney@dronecode.org.uk>
* libc/signal/signal.tex: Use texinfo not makedoc markup.
* libc/stdio/stdio.tex: Ditto.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
* libc/include/sys/config.h: Move evaluation of _UINTPTR_EQ_ULONG and
_UINTPTR_EQ_ULONGLONG from here...
* libc/include/sys/_intsup.h: ...to here. Rename to _INTPTR_EQ_LONG
and _INTPTR_EQ_LONGLONG to refer to signed base type. Add test for
base type of int32_t and set _INT32_EQ_LONG accordingly.
* libc/include/stdint.h: Change checks for __have_long32 to checks
for _INT32_EQ_LONG.
* libc/include/inttypes.h: Ditto. Accommodate aforementioned name
change.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This avoids a strlen(NULL) crash a few lines later.
* libc/time/strftime.c (strftime) <%Z>: Initialize tznam to NULL.
Use _tzname as fallback if TM_ZONE is NULL.
2015-03-23 Joel Sherrill <joel.sherrill@oarcorp.com
* configure.in: Delete logic to determine _UINTPTR_EQ_ULONGLONG
and _UINTPTR_EQ_ULONG at configuration time.
*libc/include/sys/config.h: Add logic to determine
_UINTPTR_EQ_ULONGLONG and _UINTPTR_EQ_ULONG at compilation time.
* libc/include/inttypes.h: Add include of <sys/config.h>.
* configure: Regenerated.
If the newlib .info files are installed using install-info, 'info libc' and
'info libm' don't work.
This seems to be due to the formatting of the directory entry line not being
quite right, so fix that.
Also use @direntry texinfo command, rather than writing .info directory entry
literally.
Also use @dircategory texinfo command to place into 'Newlib' category, rather
than ending up in 'Miscellaneous'
newlib/ChangeLog:
2015-03-13 Jon TURNEY <jon.turney@dronecode.org.uk>
* libc/libc.texinfo: Fix directory entry.
* libm/libm.texinfo: Ditto.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
* testsuite/newlib.stdio/swprintf.c (main): Change size of value
used to initialise 'val' variable so that it will compile on
targets with 32-bit doubles.
* libc/include/sys/config.h: Dynamic reentrancy for or1k sys targets
* libc/sys/or1k/: New system for or1k baremetal
* libc/sys/or1k/Makefile.am: New file
* libc/sys/or1k/Makefile.in: New file
* libc/sys/or1k/aclocal.m4: New file
* libc/sys/or1k/configure.in: New file
* libc/sys/or1k/configure: New file
* libc/sys/or1k/getreent.S: New file
* libc/sys/or1k/mlock.S: New file
* libc/sys/or1k/or1k-asm.S: New file
on systems where available. On Cygwin, call function to get values.
Add comment to explain why. Drop TZ_LOCK/TZ_UNLOCK in 'z' case since
it's not necessary. In 'Z' case, add a comment to document a potential
codeset problem.
improvements. Adjust to allow building as stpcpy.
* libc/machine/aarch64/stpcpy.S: New file.
* libc/machine/aarch64/stpcpy-stub.c: New file.
* libc/machine/aarch64/Makefile.am (lib_a_SOURCES): Build stpcpy.
* libc/machine/aarch64/Makefile.in: Regenerated.
[!__GNUC__]: Declare real functions for the macros, and make
the macros conditional on !__cplusplus.
* libc/stdio/Makefile.am (ELIX_4_SOURCES): Add stdio_ext.c.
(CHEWOUT_FILES): Add stdio_ext.def.
* libc/stdio/Makefile.in: Regenerate.
* libc/stdio/stdio.tex: Include stdio_ext.def.
* libc/stdio/stdio_ext.c: New file.
* libc/machine/aarch64/strrchr-stub.c: New file.
* libc/machine/aarch64/Makefile.am: Add them to build list.
* libc/machine/aarch64/Makefile.in: Regenerated.
Corinna Vinschen
Sebastian Huber
Yaakov Selkowitz
Joel Sherrill
Jeff Johnston
Pieter du Preez
Václav Haisman
Jon Turney
Игорь Веневцев
Steve Ellcey
Thomas Preud'homme
Anton Kolesov
Freddie Chopin
Thomas Preud'homme
Nick Withers
Steve Ellcey
Marcus Shawcroft
Wilco Dijkstra
Joseph Myers
Olivier Martin
Brian Inglis
Nick Clifton
Hans-Peter Nilsson
Andre Simoes Dias Vieira
James Greenhalgh
Andre Vieira
Shoichi Sakon
Wilco Dijkstra
Joel Sherrill
Freddie Chopin
Hale Wang
Szabolcs Nagy
David Stacey
DJ Delorie
Craig Howland
Steve Ellcey
Eric Botcazou
Richard Earnshaw