Disable powf/log2?f/exp2?f optimization for single-precision Arm FPU
New optimized powf, logf, log2f, expf and exp2f yield worse performance
on Arm targets with only single precision instructions because the
double precision arithmetic is then implemented via softfloat routines.
This patch uses the old implementation when double precision
instructions are not available on Arm targets.
Testing: Built newlib with GCC's rmprofile Arm multilibs and compared
before/after -> only the above functions are changed and calls to them
(name change from logf to __ieee754_logf and similar). Testing the
changed function on a panel of values yields the same result before the
original patches to improve them and after this one. Double checking the
performance by looping the same panel of values being tested on Arm
Cortex-M4 does show the performance regression is fixed.
Mark Geisert [Wed, 24 Jan 2018 08:34:23 +0000 (00:34 -0800)]
Define internal function mythreadname() -- revised
This new function returns the name of the calling thread; works for both
cygthreads and pthreads. All calls to cygthread::name(/*void*/) replaced
by calls to mythreadname(/*void*/).
Orlando Arias [Fri, 19 Jan 2018 16:45:01 +0000 (11:45 -0500)]
Fix syntax error in exit.c
This patch fixes a syntax error in exit.c that was introduced during the
ANSI-fication of newlib. The patch fixes a compile-time issue that arises when
newlib is configured with the --enable-lite-exit feature.
Yaakov Selkowitz [Tue, 16 Jan 2018 03:19:59 +0000 (21:19 -0600)]
cygwin: make <sys/socket.h> completely visible from <netinet/in.h>
While POSIX mandates that certain socket types shall be defined by the
inclusing of <netinet/in.h>, it also says that this header may also make
visible all <sys/socket.h> symbols. Glibc does this, and without out it,
some packages end up requiring an additional #include <sys/socket.h>.
Yaakov Selkowitz [Fri, 19 Jan 2018 18:06:00 +0000 (12:06 -0600)]
cygwin: remove inclusion of <sys/time.h> from <sys/socket.h>
POSIX does not mention the inclusion of <sys/time.h> in <sys/socket.h>
or <netinet/in.h>, nor is there anything in the latter two that would
require the former.
Ivan Grokhotkov [Tue, 9 Jan 2018 06:07:25 +0000 (14:07 +0800)]
newlib: fvprintf: fix get_arg for !_MB_CAPABLE
Code path for _MB_CAPABLE scans for the '%' character and advances
'fmt' pointer past '%'. Code path for !_MB_CAPABLE leaved fmt pointing
to '%', which caused the state machine to go from START to DONE state
immediately.
Corinna Vinschen [Tue, 19 Dec 2017 17:58:06 +0000 (18:58 +0100)]
cygwin: block devices: fix file offset after short writes
When reading/writing block devices, Cygwin emulates Linux, providing
a byte-exact file position, albeit the underlying device drivers don't.
Unfortunately this only worked correctly for reading. The raw_write
method failed to revalidate the buffer after the read-modify-write
cycle in case len is not a multiple of the sector length. This in
turn resulted in lseek reporting a wrong file pointer.
Also, fix a condition for invalidating the buffer after writing from
a remaining read buffer.
Corinna Vinschen [Mon, 18 Dec 2017 19:17:51 +0000 (20:17 +0100)]
newlib: ftello{64}: Handle appending stream without fflushing
Neither upstream FreeBSD nor glibc ever call fflush from ftell
and friends. In border cases it has the tendency to return
wrong or unexpected values, for instance on block devices.
Martin Aberg [Sun, 17 Dec 2017 18:23:51 +0000 (19:23 +0100)]
newlib: Availability of _kill() in sys/signal.h
Make prototype of _kill() always visible when _COMPILING_NEWLIB is
defined. This makes <sys/signal.h> consistent with the use of
_COMPILING_NEWLIB in <sys/unistd.h>, <sys/times.h>, etc.
Corinna Vinschen [Sun, 10 Dec 2017 13:11:03 +0000 (14:11 +0100)]
cygwin: mmap: fix a fork failure with private, anonymous mappings
Rounddown incoming addr on a page boundary. Without this, we may end
up with a fork error for private, anonymous maps. The reason is, we
use VirtualAlloc in this case which will potentially overcommit if
addr is not on a page boundary. This isn't taken into account in
bookkeeping, but fixup_mmaps_after_fork will eventually stumble over
this when trying to reproduce the copy-on-write pages: VirtualQuery
returns a region reaching beyond the supposedly allocated address
range and from there it goes downhill.
Jon Turney [Tue, 5 Dec 2017 18:40:44 +0000 (18:40 +0000)]
makedoc: warn about some obsolete and deprecated commands
To follow up the thread starting at [1], since all uses of TRAD_SYNOPSIS
have been removed, and all uses of ANSI_SYNOPSIS have been renamed to
SYNOPSIS, we can now warn about the use of these.
Jon Turney [Mon, 4 Dec 2017 18:08:28 +0000 (18:08 +0000)]
makedoc: make errors visible
Discard QUICKREF sections, rather than writing them to stderr
Discard MATHREF sections, rather than discarding as an error
Pass NOTES sections through to texinfo, rather than discarding as an error
Don't redirect makedoc stderr to .ref file
Remove makedoc output on error
Remove .ref files from CLEANFILES
Regenerate Makefile.ins
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
newlib: vfwscanf: fix negation bug in %[ conversion
Old BSD bug: While ^ is recognized and the set of matching characters
is negated, the code neglects to increment the pointer pointing to the
matching characters. Thus, on a negation expression like %[^xyz], the
matching doesn't only stop at x, y, or z, but incorrectly also on ^.
Fix this by setting the start pointer after recognizing the ^.
The width value keeps the maximum field width. This is the maximum
field width of the *input*. It's *never* to be used in conjunction
with the number of bytes or characters written to the output argument.
However, especially in vfwscanf, the code is partially taken from
NetBSD which erroneously subtracts the number of multibyte chars
written to the argument from the width variable, thus potentially
subtracting up to MB_CUR_MAX from width for a single character in
the input stream.
To make matters worse, the previous patch adding %m added basically
the same mistake for 'c' type input.
git://sourceware.org / newlib-cygwin.git / log