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2019-02-01scandir: Add support for struct dirent::d_typeSebastian Huber1-1/+4
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-02-01a) Use strcoll() in opendir() and alphasort()ache1-3/+4
as POSIX 2008 requires. It also matches now how our 'ls' works for years. b) Remove comment expressed 2 fears: 1) One just simple describe how strcoll() works in _any_ context, not for directories only. Are we plan to remove strcoll() from everything just because it is little more complex than strcmp()? I doubt, and directories give nothing different here. Moreover, strcoll() used in 'ls' for years and nobody complaints yet. 2) Plain wrong statement about undefined strcoll() behaviour. strcoll() always gives predictable results, falling back to strcmp() on any trouble, see strcoll(3). No objections from -current list discussion.
2019-02-01scandir(3) previously used st_sizedas1-53/+31
to obtain an initial estimate of the array length needed to store all the directory entries. Although BSD has historically guaranteed that st_size is the size of the directory file, POSIX does not, and more to the point, some recent filesystems such as ZFS use st_size to mean something else. The fix is to not stat the directory at all, set the initial array size to 32 entries, and realloc it in powers of 2 if that proves insufficient. PR: 113668
2019-02-01Remove __P and convert to ANSI prototypes.obrien1-7/+4
* Fix SCM ID's.
2019-02-01Clean up the vcs ID stringsjhb1-3/+2
in libc's gen/ directory. - Move CSRG IDs into __SCCSID(). - When a file has been copied, consistently use 'From: <tag>' for strings referencing the version of the source file copied from in the license block comment. - Some of the 'From:' tags were using $FreeBSD$ that was being expanded on each checkout. Fix those to hardcode the FreeBSD tag from the file that was copied at the time of the copy. - When multiple strings are present list them in "chronological" order, so CSRG (__SCCSID) before FreeBSD (__FBSDID). If a file came from OtherBSD and contains a CSRG ID from the OtherBSD file, use the order CSRG -> OtherBSD -> FreeBSD. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D15831
2019-02-01Renumber copyright clause 4imp1-1/+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
2019-02-01scandir: Update copyright notice from FreeBSDSebastian Huber1-3/+3
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2019-02-01General further adoption of SPDX licensing ID tags.pfg1-0/+2
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.
2019-01-23Remove matherr, and SVID and X/Open math library configurationsJozef Lawrynowicz3-41/+1
Default math library configuration is now IEEE
2019-01-22time.h: Add CLOCK_REALTIME_ALARM/CLOCK_BOOTTIME_ALARMCorinna Vinschen1-8/+12
Slightly reshuffle and add comment Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-15AMD GCN Port contributed by Andrew Stubbs <ams@codesourcery.com>Jeff Johnston30-4/+13104
Add support for the AMD GCN GPU architecture. This is primarily intended for use with OpenMP and OpenACC offloading. It can also be used for stand-alone programs, but this is intended mostly for testing the compiler and is not expected to be useful in general. The GPU architecture is highly parallel, and therefore Newlib must be configured to use dynamic re-entrancy, and thread-safe malloc. The only I/O available is a via a shared-memory interface provided by libgomp and the gcn-run tool included with GCC. At this time this is limited to stdout, argc/argv, and the return code.
2019-01-13update to Unicode 11.0Thomas Wolff4-93/+159
2019-01-13map WEOF to undefined rather than the control char categoryThomas Wolff1-1/+1
Fixes https://cygwin.com/ml/cygwin/2018-12/msg00173.html
2019-01-07fcntl.h: expose AT_EMPTY_PATH with _GNU_SOURCE onlyCorinna Vinschen1-0/+2
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-07Cygwin: linkat: support Linux-specific AT_EMPTY_PATH flagCorinna Vinschen1-0/+1
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-07Cygwin: open: support Linux-specific O_PATH flagCorinna Vinschen1-0/+2
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-01-01Improve performance of memmemWilco Dijkstra2-51/+137
This patch significantly improves performance of memmem using a novel modified Horspool algorithm.  Needles up to size 256 use a bad-character table indexed by hashed pairs of characters to quickly skip past mismatches. Long needles use a self-adapting filtering step to avoid comparing the whole needle repeatedly. By limiting the needle length to 256, the shift table only requires 8 bits per entry, lowering preprocessing overhead and minimizing cache effects. This limit also implies worst-case performance is linear. Small needles up to size 2 use a dedicated linear search.  Very long needles use the Two-Way algorithm (to avoid increasing stack size inlining is now disabled). The performance gain is 6.6 times on English text on AArch64 using random needles with average size 8 (this is even faster than the recently improved strstr algorithm, so I'll update that in the near future). The size-optimized memmem has also been rewritten from scratch to get a 2.7x performance gain. Tested against GLIBC testsuite and randomized tests. Message-Id: <DB5PR08MB1030649D051FA8532A4512C883B20@DB5PR08MB1030.eurprd08.prod.outlook.com>
2018-12-31Bump release to 3.1.0 for yearly snapshotnewlib-snapshot-20181231newlib-3.1.0Jeff Johnston93-947/+962
2018-12-20RTEMS: Use __uint64_t for __ino_tSebastian Huber1-1/+1
FreeBSD uses a 64-bit ino_t since 2017-05-23. We need this for the pipe() support in libbsd. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-12-20Plug routing sysctl leaks.markj1-1/+5
Various structures exported by sysctl_rtsock() contain padding fields which were not being zeroed. Reported by: Thomas Barabosch, Fraunhofer FKIE Reviewed by: ae MFC after: 3 days Security: kernel memory disclosure Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18333
2018-12-13nano-vfprintf_float.c: Fix check if negative for nans.Jon Beniston1-1/+2
2018-12-04sys/time.h: Remove KASSERTSebastian Huber1-12/+0
The KASSERT is only used by the FreeBSD kernel. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-12-04Ensure that all values of ns, us and ms workimp1-7/+52
for {n,u,m}stosbt Integer overflows and wrong constants limited the accuracy of these functions and created situatiosn where sbttoXs(Xstosbt(Y)) != Y. This was especailly true in the ns case where we had millions of values that were wrong. Instead, used fixed constants because there's no way to say ceil(X) for integer math. Document what these crazy constants are. Also, use a shift one fewer left to avoid integer overflow causing incorrect results, and adjust the equasion accordingly. Document this. Allow times >= 1s to be well defined for these conversion functions (at least the Xstosbt). There's too many users in the tree that they work for >= 1s. This fixes a failure on boot to program firmware on the mlx4 NIC. There was a msleep(1000) in the code. Prior to my recent rounding changes, msleep(1000) worked, but msleep(1001) did not because the old code rounded to just below 2^64 and the new code rounds to just above it (overflowing, causing the msleep(1000) to really sleep 1ms). A test program to test all cases will be committed shortly. The test exaustively tries every value (thanks to bde for the test). Sponsored by: Netflix, Inc Differential Revision: https://reviews.freebsd.org/D18051
2018-12-04When converting ns,us,ms to sbt, return the ceil()imp1-3/+7
of the result rather than the floor(). Returning the floor means that sbttoX(Xtosbt(y)) != y for almost all values of y. In practice, this results in a difference of at most 1 in the lsb of the sbintime_t. This difference is meaningless for all current users of these functions, but is important for the newly introduced sysctl conversion routines which implicitly rely on the transformation being idempotent. Sponsored by: Netflix, Inc
2018-12-04Correct a misplaced closing paren.ian1-3/+3
Does not affect the result, but does clarify (at least for me) that the multiplication happens before the shift.
2018-12-04sys: further adoption of SPDX licensing ID tags.pfg1-0/+2
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
2018-12-04Add inline functions to convert between sbintime_tian1-7/+52
and decimal time units. Use them in some existing code that is vulnerable to roundoff errors. The existing constant SBT_1NS is a honeypot, luring unsuspecting folks into writing code such as long_timeout_ns*SBT_1NS to generate the argument for a sleep call. The actual value of 1ns in sbt units is ~4.3, leading to a large roundoff error giving a shorter sleep than expected when multiplying by the trucated value of 4 in SBT_1NS. (The evil honeypot aspect becomes clear after you waste a whole day figuring out why your sleeps return early.)
2018-12-04Renumber copyright clause 4imp1-1/+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
2018-11-29stdio.h: Expose cuserid with __GNU_VISIBLECorinna Vinschen1-1/+1
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-11-29time.h: Introduce Linux-specific CLOCK id valuesCorinna Vinschen1-4/+18
- Add CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_RAW, CLOCK_MONOTONIC_COARSE and CLOCK_BOOTTIME - Guard new values with __GNU_VISIBLE - Add CLOCK_REALTIME_COARSE as (clockid_t) 0 for simplicity (It allows to have all values < 8 and so be used as array index into an array of clocks) - Fix macro bracketing Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-11-26Builtin enable return code with SYS_EXIT_EXTENDEDMatthew Malcomson1-19/+43
A previous commit introduced the ability to use the semi-hosting SYS_EXIT_EXTENDED operation to libgloss, this commit adds the same ability to the sys/arm/ backend so that building newlib only will provide the same capabilities.
2018-11-08Fix issue with dst bias in memsetWilco Dijkstra1-0/+1
This patch fixes an issue in the previous memset loop change. If the zva size is >= 256 and there are more than 64 bytes left in the tail, we could enter the loop and thus need to rebias dst by 32 as well. Since no known CPUs use this size this can't be tested natively, so I've tested it on a simulator initialized with a large zva size. --
2018-11-08Fix v850 target for RTEMScygwin-2_11_2-releaseSebastian Huber1-1/+1
Do not define __ATTRIBUTE_IMPURE_PTR__ for RTMES on the v850 target. The previous definition lead to the following linker error in combination with -fdata-sections: relocation truncated to fit: R_V810_GPWLO_1 against symbol `_global_impure_ptr' defined in .rodata._global_impure_ptr section in libc.a(lib_a-impure.o) relocation truncated to fit: R_V810_GPWLO_1 against symbol `_impure_ptr' defined in .data._impure_ptr section in libc.a(lib_a-impure.o) Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-11-08RTEMS: Avoid <machine/param.h> in <sys/_cpuset.h>Sebastian Huber1-2/+5
The <machine/param.h> header file exposes some unrelated stuff not covered by C or POSIX. Avoid its use in <sys/_cpuset.h> since it is included in <rtems.h>. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-11-06Adjust writeback in non-zero memsetWilco Dijkstra1-3/+3
This fixes an ineffiency in the non-zero memset. Delaying the writeback until the end of the loop is slightly faster on some cores - this shows ~5% performance gain on Cortex-A53 when doing large non-zero memsets. Tested against the GLIBC testsuite.
2018-10-22Fix posix_memalign() attributesSebastian Huber1-2/+2
The malloc, alloc_size and alloc_aligned attributes must be only used in case the function returns the pointer to the allocated memory. See also: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87683 Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-18newlib/libc/sys/rtems/include/machine/param.h: Add _KERNEL to stop method ↵Joel Sherrill1-0/+3
leakage The following FreeBSD kernel methods are not in any standard and prototypes/definitions were leaking into application space: + round_page() + trunc_page() + atop() + ptoa() + pgtok()
2018-10-18Improve performance of strstrWilco Dijkstra1-96/+127
v3: Add support for read ahead using strnlen, giving an additional 25% speedup on large inputs (both short and long needles). This patch significantly improves performance of strstr by using Sunday's Quick-Search algorithm. Due to its simplicity it has the best average performance of string matching algorithms on almost all inputs. It uses a bad-character shift table to skip past mismatches. The needle length is limited to 254 - this reduces the shift table memory 4 to 8 times, lowering preprocessing overhead and minimizing cache effects. The limit also implies its worst-case performance is linear. Larger needles are processed by the Two-Way algorithm. The macro AVAILABLE has been improved to use strnlen to read the input in chunks. This results in a 2.5 times speedup for large needles, reducing the performance drop when the Quick-Search algorithm can't be used. The code for 1-4 byte needles has been simplified and now uses unsigned char. Since the optimized code relies on 8-bit chars, we defer to the size-optimized implementation if CHAR_BIT > 8. The performance gain of finding a set of randomly chosen words of size 8 in 256 bytes of English text is 14 times on AArch64. For longer haystacks the gain is well over 20 times. The size-optimized strstr has also been rewritten from scratch to improve performance. On the same test the performance gain is 69%. Tested against GLIBC testsuite, randomized tests and the GNULIB strstr test (https://git.savannah.gnu.org/cgit/gnulib.git/tree/tests/test-strstr.c). --
2018-10-11newlib/libc/ctype/jp2uc.c: Declare "cs" variable as "const char *"Christophe Lyon1-2/+2
Instead of "char *" to avoid compiler warnings. This is OK because "cs" is only used as input of strcmp.
2018-10-11Add generic implementation of fdopendir()Sebastian Huber1-8/+21
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11Add generic implementation of dirfd()Sebastian Huber3-12/+56
Use existing HAVE_OPENDIR define to determine if a generic implementation should be provided. Cygwin for example has its own implementation of opendir() and dirfd(). Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11RTEMS: Add struct dirent::d_type memberSebastian Huber1-27/+98
This is used by the file system support of libstdc++ for example. Use content from latest FreeBSD <sys/dirent.h> Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11Move common <sys/dirent.h> content to <dirent.h>Sebastian Huber8-75/+75
Move common content of the various <sys/dirent.h> and the latest FreeBSD <dirent.h> to <dirent.h>. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11Open a directory with the usual flagsSebastian Huber1-9/+4
Use O_RDONLY since you are not supposed to write to a directory. Use O_DIRECTORY as mandated by POSIX (The Open Group Base Specifications Issue 7, 2018 edition IEEE Std 1003.1-2017): "If the type DIR is implemented using a file descriptor, the descriptor shall be obtained as if the O_DIRECTORY flag was passed to open()." Use O_CLOEXEC as mandated by POSIX: "When a file descriptor is used to implement the directory stream, it behaves as if the FD_CLOEXEC had been set for the file descriptor." Drop the fcntl() call in favour of O_CLOEXEC. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-11Make some standard open() flags visibleSebastian Huber1-21/+27
Make the POSIX O_CLOEXEC, O_NOFOLLOW, O_DIRECTORY, O_EXEC, and O_SEARCH open() flags available also to non-Cygwin systems. Make the BSD/glibc O_DIRECT open() flag available also to non-Cygwin systems. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-10newlib: Build internal strtold code only if HAVE_LONG_DOUBLE definedCorinna Vinschen2-8/+9
Commit fbace81684f8cbb80a2048c01dc545af247f5cb7 ("Import correctly working strtold from David M. Gay.") introduced two new files, strtorx.c and strtodg.c. The functions are only called from strtold.c. However, while strtold.c is only built if HAVE_LONG_DOUBLE is defined, the patch erroneously added the two new files to GENERAL_SOURCES unconditionally. Fix this by building both files only if HAVE_LONG_DOUBLE has been defined. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-10-10newlib: strtold: use __builtin_nanl to avoid libm dependencyCorinna Vinschen1-1/+1
Commit 6c212a8b7873703c4f98c6b68579b234918be83a ("Fix strtod ("nan") and strtold ("nan") returns wrong negative NaN") introduced an unconditional dependency to nanl and, in turn, to libm. Rather than including nanl in libc as well, just call __builtin_nanl from here. Requires GCC 3.3 or later. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-10-10newlib: Drop incorrect const qualifier from __loadlocale parameterCorinna Vinschen2-3/+3
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-10-10Add attributes to malloc-like functionsSebastian Huber4-6/+7
These attributes help static analysis tools to produce less false positives, e.g. double free warnings. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-10-08[ARM] Make _kill() a noreturn function.Christophe Lyon1-5/+8
AngelSWI_Reason_ReportException does not return accoring to the ARM documentation, so it is valid to mark _kill() as noreturn. This way, the compiler does not warn about _exit() returning a value despite being noreturn. 2018-10-01 Christophe Lyon <christophe.lyon@linaro.org> * libgloss/arm/_exit.c (_exit): Declare _kill() as noreturn. * libgloss/arm/_exit.c (_kill): Likewise. Remove the return statements. * newlib/libc/sys/arm/syscalls.c (_kill): Likewise..
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