Commit Graph

3803 Commits

Author SHA1 Message Date
Joseph Faulls dcb2b7d7b8 Delete check in catan, catanf, and catanl functions.
The check incorrectly results in catan returning nan + inf i when real part is +/- 1 and
imaginary part is 0.  The same occurs for real 0.8 and imaginary 0.6.

The change ends up matching glibc behaviour.
2023-10-10 15:18:54 -04:00
Sebastian Huber fe5886a500 aarch64: Import memrchr.S
Import memrchr.S for AArch64 from:

https://github.com/ARM-software/optimized-routines

commit 0cf84f26b6b8dcad8287fe30a4dcc1fdabd06560
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Thu Jul 27 17:14:57 2023 +0200

    string: Fix corrupt GNU_PROPERTY_TYPE (5) size

    For ELF32 the notes alignment is 4 and not 8.
2023-10-05 14:16:59 +02:00
Sebastian Huber 96ec8f868e aarch64: Sync with ARM-software/optimized-routines
Update AArch64 assembly string routines from:

https://github.com/ARM-software/optimized-routines

commit 0cf84f26b6b8dcad8287fe30a4dcc1fdabd06560
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Thu Jul 27 17:14:57 2023 +0200

    string: Fix corrupt GNU_PROPERTY_TYPE (5) size

    For ELF32 the notes alignment is 4 and not 8.

Add license and copyright information to COPYING.NEWLIB as entry (56).
2023-10-05 14:16:57 +02:00
Torbjörn SVENSSON a9e8e3d1cb newlib: Add missing prototype for _getentropy 2023-09-25 18:20:25 -04:00
Alexey Lapshin 6e5676a915 newlib: Fix header install 2023-09-18 18:45:34 +02:00
Pekka Seppänen c2d2bf34e6 Reentrancy, attempt to always provide _Thread_local in <sys/reent.h>
Attempt to always provide _Thread_local in <sys/reent.h> by including
<sys/cdefs.h>.  The C specific keyword _Thread_local is not available
unless targetting a suitable C version.
2023-09-11 09:23:05 +02:00
Pekka Seppänen 7a1c717c8b Reentrancy, conditionally provide default __getreent() implementation
Conditionally provide default __getreent() implementation only if
_REENT_THREAD_LOCAL is not defined.  If struct _reent is replaced by
dedicated thread-local objects neither the structure nor _impure_ptr is
available.
2023-09-11 09:23:05 +02:00
Pekka Seppänen 766f1beb4d Reentrancy, use _REENT_ERRNO()
Use _REENT_ERRNO() macro to access errno.  This encapsulation is
required, as errno might be either _errno member of struct _reent,
_tls_errno or any such implementation detail.
2023-09-11 09:23:05 +02:00
Pekka Seppänen 31eb43efa7 libc/stdlib/nano-mallocr.c, typo in variable name
Nano malloc uses `size' in assertation whereas the correct variable would be
`s'.  Given this has existed ever since nano malloc support was added, based
on the context ("returned payload area of desired size does not exceed the
actual allocated chunk") I presume that indeed `s' (user input) and not
`r->size' (computed) shall be used.
2023-08-29 14:33:27 +02:00
Alexey Lapshin 42eb6e5ddf newlib: fix 'sed' for sys headers path prefix
Precisely remove the prefix from the filepath.
2023-08-29 13:42:27 +02:00
Alexey Lapshin 7ba103eb1a newlib: add Xtensa port 2023-08-17 18:14:15 -04:00
Corinna Vinschen b5111e4642 struct _reent: add state for unicode functions
C23 requires that the unicode functions c16rtomb, c8rtomb, mbrtoc16,
mbrtoc32 and mbrtoc8 use their own internal state object.  c32rtomb
only needs an internal state if the lib supports encoding with
shift states, but that's the case for newlib and Cygwin.

Only Cygwin implements these functions so add the states
objects only for Cygwin for now.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-08-15 22:30:59 +02:00
Alexey Lapshin 3550d74823 Add wildcard support to recurse into sys include directories 2023-08-10 14:16:05 -04:00
Corinna Vinschen 07092a52e9 sys/unistd.h: define GNU extensions SEEK_DATA and SEEK_HOLE
SEEK_DATA and SEEK_HOLE are GNU nonstandard extensions also present
in Solaris, FreeBSD, and DragonFly BSD; they are proposed for inclusion
in the next POSIX revision (Issue 8).

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-08-09 16:51:57 +02:00
Torbjörn SVENSSON b9e867d088 Add stub for getentropy
Example test case that fails with undefined reference to getentropy:

Testing g++.robertl/eb77.C,  -std=c++20
doing compile
Executing on host: /build/gcc-13-2709-g9ac9fde961f/bin/arm-none-eabi-g++  /build/src/gcc/gcc/testsuite/g++.old-deja/g++.robertl/eb77.C  -mthumb -march=armv6s-m -mcpu=cortex-m0 -mfloat-abi=soft -fdiagnostics-plain-output   -fmessage-length=0  -std=c++20 -pedantic-errors -Wno-long-long        -Wl,--start-group -lc -lm -Wl,--end-group --specs=nosys.specs -Wl,--allow-multiple-definition -Wl,-u,_isatty,-u,_fstat   -Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -Wl,g++_tg.o -lm -o ./eb77.exe    (timeout = 800)
spawn -ignore SIGHUP /build/gcc-13-2709-g9ac9fde961f/bin/arm-none-eabi-g++ /build/src/gcc/gcc/testsuite/g++.old-deja/g++.robertl/eb77.C -mthumb -march=armv6s-m -mcpu=cortex-m0 -mfloat-abi=soft -fdiagnostics-plain-output -fmessage-length=0 -std=c++20 -pedantic-errors -Wno-long-long -Wl,--start-group -lc -lm -Wl,--end-group --specs=nosys.specs -Wl,--allow-multiple-definition -Wl,-u,_isatty,-u,_fstat -Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -Wl,g++_tg.o -lm -o ./eb77.exe
pid is 28414 -28414
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::(anonymous namespace)::__libc_getentropy(void*)':
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libc.a(libc_a-arc4random.o): in function `_rs_stir':
(.text._rs_stir+0x8): undefined reference to `getentropy'
collect2: error: ld returned 1 exit status
pid is -1
close result is 28414 exp6 0 1
output is /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::(anonymous namespace)::__libc_getentropy(void*)':
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libc.a(libc_a-arc4random.o): in function `_rs_stir':
(.text._rs_stir+0x8): undefined reference to `getentropy'
collect2: error: ld returned 1 exit status
 status 1
compiler exited with status 1
FAIL: g++.old-deja/g++.robertl/eb77.C  -std=c++20 (test for excess errors)
Excess errors:
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
(.text._rs_stir+0x8): undefined reference to `getentropy'
UNRESOLVED: g++.old-deja/g++.robertl/eb77.C  -std=c++20 compilation failed to produce executable

Contributed by STMicroelectronics

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
2023-08-09 11:38:03 +02:00
Corinna Vinschen e66c63be6b sys/cdefs.h: introduce __restrict_arr, as in glibc
C99 allows to define arrays as non-overlappiung using the restrict
keyword.  This is supported by GCC 3.1 and later, but it's not
allowed in C++.

This is in preparation of fixing a Cygwin build problem introduce by
commit 3c75fac130.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-08-07 15:59:42 +02:00
Sebastian Huber 3c75fac130 sys/cdefs.h: fix for use __restrict in C++
Newlib shares large parts of <sys/cdefs.h> with FreeBSD and received
this bug report:

https://sourceware.org/pipermail/newlib/2023/020400.html

As an extension, GCC and clang offer C99-style restricted pointers in
C++ mode:
https://gcc.gnu.org/onlinedocs/gcc/Restricted-Pointers.html

We notice that this extension is broken when including newlib headers:
restricted pointers are treated as ordinary pointers.

We traced this to the following section of
newlib/libc/include/sys/cdefs.h:

  /*
   * GCC 2.95 provides `__restrict' as an extension to C90 to support the
   * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
   * a way to define the `restrict' type qualifier without disturbing older
   * software that is unaware of C99 keywords.
   */
  #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
  #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901
  #define	__restrict
  #else
  #define	__restrict	restrict
  #endif
  #endif

While the GCC __restrict extension was indeed introduced in GCC 2.95, it
is not limited to this version; the extension is also not limited to
C90:
https://gcc.gnu.org/gcc-2.95/c++features.html

Rewrite the logic in the header so that __restrict is kept alone when
available.

PR:	272723
MFC after:	1 week
2023-08-07 13:45:21 +02:00
John Baldwin b12934540f <sys/cdefs.h>: Decay expression passed to fallback
version of __generic()

This ensures that __generic() more closely matches _Generic() when
using the fallback version when _Generic() is not available (such as
GCC).

Co-authored by:	jrtc27
Reviewed by:	jrtc27
Differential Revision:	https://reviews.freebsd.org/D38215
2023-08-07 13:45:03 +02:00
Takashi Yano ab78bd2d22 newlib: gdtoa: Suppress compiler warning.
Fixes: 5ac83ea47a ("newlib: Fix memory leak regarding gdtoa-based _ldtoa_r().")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
2023-08-04 17:45:59 +09:00
Corinna Vinschen 290b56a879 sys/features.h: Define _ISOC2X_SOURCE and __ISO_C_VISIBLE
Add feature test for C2X code. Add matching definitions
_ISOC2X_SOURCE for requesting sources and __ISO_C_VISIBLE
to be used in headers.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-08-02 16:56:24 +02:00
Takashi Yano 5ac83ea47a newlib: Fix memory leak regarding gdtoa-based _ldtoa_r().
After the commit a4705d387f, printf() for floating-point values
causes a memory leak. The legacy _ldtoa_r() assumed the char pointer
returned will be free'ed by Bfree(). However, gdtoa-based _ldtoa_r()
returns the pointer returned by gdtoa() which should be free'ed by
freedtoa(). Due to this issue, the caller of _ldtoa_r() fails to free
the allocated char buffer. This is the cause of the said memory leak.
https://cygwin.com/pipermail/cygwin/2023-July/254054.html

This patch makes rv_alloc()/freedtoa() allocate/free the buffer in
a compatible way with legacy _ldtoa_r().

Fixes: a4705d387f ("ldtoa: Import gdtoa from OpenBSD.")
Reported-by: natan_b <natan_b@libero.it>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
2023-08-02 15:00:56 +09:00
Corinna Vinschen 8a43189438 Revert "* libc/stdlib/mbtowc_r.c (__ascii_mbtowc): Disallow conversion of"
This reverts commit 2b77087a48.

For some reason lost in time, commit 2b77087a48 introduced
Cygwin-specific code treating single byte characters outside the
portable character set as illegal chars.  However, Cygwin was
always alone with this over-correct behaviour and it leads to
stuff like gnulib replacing functions defined in Cygwin with
their own implementation just due to that.

Revert this change, sans the changes to ChangeLog.

Fixes: 2b77087a48 ("* libc/stdlib/mbtowc_r.c (__ascii_mbtowc): Disallow conversion of")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-07-31 22:39:09 +02:00
Jesse Huang via Newlib 9e329b544a Fix rounding results in lrint() & llrint() when close to 0
soft-fp should round floating pointer numbers according to the current
rounding mode. However, in the current code of lrint() and llrint(),
there are if statements before the actual rounding computation

      if(j0 < -1)
        return 0;

Where j0 is the exponent of the floating point number.

It means any number having a exponent less than -1
(i.e. interval (-0.5, 0.5)) will be rounded to 0 regardeless of the
rounding mode.

The bug already fixed in glibc in 2006 by moving the check afterwards
the rounding computation, but still persists in newlib.

This patch fixed it in a similar way to glibc
Ref Commit in glibc: 6624dbc07b5a9fb316ed188ef01f65b8eea8b47c
2023-07-27 11:14:12 +02:00
Corinna Vinschen 4fbcc8c5fe Rename _NL_CTYPE_OUTDIGITSx_MB/WC to _NL_CTYPE_OUTDIGITx_MB/WC
The extended _NL_foo names were originally designed after their GLibc
counterparts.  However, the OUTDIGIT macros were accidentally defined as
OUTDIGITS, plural.  Fix them.

Fixes: d47d5b850b ("Extend locale support to maintain wide char values of native strings")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-07-26 19:55:26 +02:00
Kito Cheng via Newlib d572c4482b RISC-V: Support Zfinx/Zdinx extension.
Zfinx/Zdinx are new extensions ratified in 2022, it similar to F/D extensions,
support hard float operation for single/double precision, but the difference
between Zfinx/Zdinx and F/D is Zfinx/Zdinx is operating under general purpose
registers rather than dedicated floating-point registers.

This patch improve the hard float support detection for RISC-V port, so
that Zfinx/Zdinx can have better/right performance.

Co-authored-by: Jesse Huang <jesse.huang@sifive.com>
2023-07-26 15:21:35 +02:00
Corinna Vinschen a891dc7605 Define _AT_NULL_PATHNAME_ALLOWED
Cygwin needs an internal flag to allow specifying an empty pathname
in utimesat (GLIBC extension). We define it in _default_fcntl.h to
make sure we never introduce a value collision accidentally.
While at it, define the values as 16 bit hex values.

Reviewed-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-07-26 15:14:22 +02:00
Jeff Johnston 816e9d67be Fix typo. 2023-07-18 13:43:29 -04:00
Jordi Sanfeliu 661f9f9c5a Change getlogin() to only check stdin being null 2023-07-17 15:05:35 -04:00
Alexey Lapshin b7c3a63bb3 newlib: posix: add HAVE_OPENDIR build condition for [n]ftw.c 2023-07-13 19:58:29 +02:00
Thomas Schwinge 4c7d0dfec5 For GCC, newlib combined tree, newlib build-tree testing, use standard search paths
For example, for GCC/GCN target (AMD GPUs), target libraries are built
individually per supported hardware ISA ('-march=[...]').  Testing such a
toolchain via, for example:

    $ make RUNTESTFLAGS='--target_board=[...]/-march=gfx90a' check[...]

... does work fine for all 'check-gcc-[...]' as well as GCC-provided target
libraries, 'check-target-[...]'.  Just for 'check-target-newlib', for the
example above, not the '-march=gfx90a' newlib libraries are linked in, but
instead always the default ones, which results in link FAILure.  This is cured
simply by skipping use of 'newlib/testsuite/lib/flags.exp', so that the
standard search paths as determined by GCC, DejaGnu are used for newlib, too.
2023-06-22 21:41:30 +02:00
Mingye Wang 6b2ae32ecd Make SIG2STR_MAX usable in #if
The text accepted for POSIX issue 8 requires that SIG2STR_MAX be usable
in #if, which we currently break with sizeof. Use static values instead.
2023-06-21 15:15:03 +02:00
Remy Bohmer e79304d7b4 m68k: disallow unaligned access for m68010 and m68020
Disable at least  m68010 and m68020. These processors certainly do not
like unaligned accesses.

Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Austin Morton <austinpmorton@gmail.com>
Signed-off-by: Chris Packham <judge.packham@gmail.com>
2023-05-30 13:54:32 -04:00
Alexey Lapshin e7858c0a58 fix __time_load_locale return code
- add explicit __HAVE_LOCALE_INFO__ check
2023-05-17 17:47:54 -04:00
Jennifer Averett 9ae9eef21d Regenerated source for adding non LDBL_EQ_DBL 2023-05-16 09:05:36 -05:00
Jennifer Averett 048ebea981 newlib: Add non LDBL_EQ_DBL math support for aarch64, i386, and x86_64
Rename s_nearbyint.c, s_fdim.c and s_scalbln.c to remove conflicts
    Remove functions that are not needed from above files
    Modify include paths
    Add includes missing in cygwin build
    Add missing types
    Create Makefiles
    Create header files to resolve dependencies between directories
    Modify some instances of unsigned long to uint64_t for 32 bit platforms
    Add HAVE_FPMATH_H
2023-05-16 09:05:36 -05:00
Jennifer Averett c630a6a837 newlib: Add FreeBSD files for non LDBL_EQ_DBL support
FreeBSD files to add long double support for i386,
aarch64 and x86_64.
2023-05-16 09:05:36 -05:00
Jennifer Averett 8144619bad Regenerated source for moving signgam.c 2023-05-05 14:50:15 -04:00
Jennifer Averett 742b8db95d Move signgm.c from libc/reent to libm/math 2023-05-05 14:49:48 -04:00
Sebastian Huber e301a74a6f Fix _REENT_EMERGENCY() if TLS is enabled
If the thread-local storage (TLS) support was enabled, the _REENT_EMERGENCY()
object had the wrong size.  It must be a buffer of length _REENT_EMERGENCY_SIZE
and not just a single character.
2023-04-26 08:23:04 +02:00
Sebastian Huber fd26d4b4b6 RTEMS: Add __m68k_read_tp() to crt0.c
This is required to build libgomp.
2023-04-24 10:21:42 +02:00
Corinna Vinschen 3124d8b436 posix_spawn_file_actions_addfchdir_np: return EBADF on negative fd
FreeBSD and Musl implement posix_spawn_file_actions_addfchdir_np
so that it checks the incoming descriptor for being negative, and,
if so, return with EBADF.  The POSIX proposal defining
posix_spawn_file_actions_addfchdir follows this behaviour, see
https://www.austingroupbugs.net/view.php?id=1208

Fixes: 7e03fc35f5 ("Add posix_spawn_file_actions_add{f}chdir_np")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-04-19 20:48:14 +02:00
Corinna Vinschen 7e03fc35f5 Add posix_spawn_file_actions_add{f}chdir_np
These are defined as _np functions and available in glibc, musl, macOS,
FreeBSD, Solaris ≥ 11.3

They are likely to be standardized without the _np suffix as a result of
Austin Group issue 1208. if so, both names will be kept as aliases.

Introduce HAVE_CHDIR and HAVE_FCHDIR to allow building on systems not
providing these calls.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-04-18 23:47:28 +02:00
Andoni Arregi ef75abddc7 Replace always true if with else 2023-04-13 13:36:11 -04:00
Andoni Arregi 9e89e66729 Compare j as unsigned
j is int32_t and thus j<<31 is undefined if j==1.

Taken from FreeBSD commit bdd8abc6d6a93ce3ab8ad5db716222ee3110c4a3
2023-04-13 13:34:57 -04:00
Andoni Arregi e5a36e6af7 Fix x close to 1, y between 2^31 and 2^64
E.g. known errors:
x = 0x1.000002c5e2e99p+0, y = 0x1.c9eee35374af6p+31 had an error of 639
ULP and is now correctly rounded.
x = 0x1.fffffd2e3e669p-1, y = 0x1.344c9823eb66cp+32 had an error of 428
ULP and is now correctly rounded.
2023-04-13 13:33:46 -04:00
Andoni Arregi 5a961061de Fix missing sign for overflow/underflow where x is negative and y is large odd integer 2023-04-13 13:32:47 -04:00
Tobias Burnus 544aa97f86 Bump newlib version in the manual to 4.3.0
While commit 9e09d6ed8 (tag: newlib-4.3.0) bumped the newlib version to 4.3.0,
this commit updates the version/date in the libc/libm manuals to match.
2023-03-30 14:09:30 +02:00
Corinna Vinschen 606373e7d2 newlocale: set errno to ENOENT if __loadlocale fails
__loadlocale never sets errno, but newlocale is supposed to
return ENOENT if the locale isn't valid.

Fixes: aefd8b5b51 ("Implement newlocale, freelocale, duplocale, uselocale")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-03-24 12:44:52 +01:00
Corinna Vinschen 5da71b6059 Cygwin: add support for GB18030 codeset
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-03-16 18:25:09 +01:00
Srinath Parvathaneni 1d3d2ba54b arm: Restrict processor mode change when in hypervisor mode
If a CPU implements EL2 as its highest exception level then programs
using newlib may start in hypervisor mode.  In that state it is not
trivial to switch into the various EL1 modes to configure the
individual exception stacks, so do not try.
2023-03-03 13:27:31 +00:00
Srinath Parvathaneni b782dcb2b3 arm: Fix the SP used in setting stack limit for standalone application.
Move the instruction that saves SP before the mode check so that
applications that start in USER mode correctly set the stack limit.
2023-03-03 13:20:29 +00:00
Henrik Nilsson via Newlib c8397ae817 nano-mallocr: Prevent NULL pointer de-reference in free_list
The existing code checked if there was a chunk in free_list and
that the tail was not the next chunk.

The check if there is a chunk is not needed since it's already
known but the case of a single chunk in free_list needs to be
handled differently.
2023-02-27 10:54:26 +01:00
Corinna Vinschen f20aee9091 ctype_cp.h/ctype_iso.h: clean whitespace
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-02-25 16:12:51 +01:00
Corinna Vinschen 2b052b3c50 Cygwin: fully support KOI8-T codeset
Commit 89eb4bce15 was pretty half-hearted, missing
the codepage character type tables and wctomb/mbtowc
mappings.

Fixes: 89eb4bce15 ("Cygwin: support KOI8-T codeset")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-02-25 16:12:51 +01:00
Corinna Vinschen e95a7a7955 Cygwin: convert Windows locale handling from LCID to ISO5646 strings
Since Windows Vista, locale handling is converted from using numeric
locale identifiers (LCID) to using ISO5646 locale strings.  In the
meantime Windows introduced new locales which don't even have a LCID
attached.  Those were unusable in Cygwin because locale information
for these locales required to call the new locale functions taking
a locale string.

Convert Cygwin to drop LCIDs and use Windows ISO5646 locales instead.

The last place using LCIDs is the __set_charset_from_locale function.
Checking numerically is easier and uslay faster than checking strings.
However, this function is clearly a TODO
2023-02-24 16:40:58 +01:00
Corinna Vinschen 89eb4bce15 Cygwin: support KOI8-T codeset
Used on Linux as default codeset for Tajik. There's no matching
Windows codepage, so fake it as CP103.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-02-24 16:40:58 +01:00
Jeff Johnston 17ac400c11 Fix libgloss/newlib build to conditionally use top include dir
- conditionally use -idirafter option for arm
2023-02-22 14:53:05 -05:00
Hau Hsu 97d483c2f8 RISC-V: Use the new libm code if possible
Set  __OBSOLETE_MATH_DEFAULT to 0 if 'd' extension is supported (i.e.
__riscv_flen == 64).

Base on the comment for  __OBSOLETE_MATH_DEFAULT:

> ... it assumes that the toolchain has ISO C99 support (hexfloat
> literals, standard fenv semantics), the target has IEEE-754 conforming
> binary32 float and binary64 double (not mixed endian) representation,
> standard SNaN representation, double and single precision arithmetics
> has similar latency and it has no legacy SVID matherr support, only
> POSIX errno and fenv exception based error handling.

Signed-off-by: Hau Hsu <hau.hsu@sifive.com>
2023-02-22 12:20:57 +01:00
Brian Inglis 81ac069eec newlib/libc/{ctype, string}/*.t: Unicode 15 character width and property tables 2023-02-20 11:01:18 +01:00
Brian Inglis 8cf9b4aaaf newlib/libc/ctype/mkcaseconv: fix POSIX shell invalid == comparison 2023-02-20 10:46:54 +01:00
Corinna Vinschen 23e49b18ce setlocale: create LC_ALL string when changing locale
This patch is for the sake of gnulib.

gnulib implements some form of a thread-safe setlocale variant
called setlocale_null_r, which is supposed to return the locale
strings in a thread-safe manner.  This only succeeds if the system's
setlocale already handles this thread-safe, otherwise gnulib adds
some locking on its own.

Newlib's setlocale always writes the global string array holding the
LC_ALL value anew on each invocation of setlocale(LC_ALL, NULL).
Since that doesn't allow to call setlocale(LC_ALL, NULL) in a
thread-safe manner, so locking in gnulib is required.

And here's the problem...

The lock is decorated as dllexport when building for Cygwin.  This
collides with the default behaviour of ld to export all symbols.
If it finds one decorated symbol, it will only export this symbol
to the DLL import lib.

Change setlocale so that it writes the global string array
holding the LC_ALL value at the time the locale gets changed.
On setlocale(LC_ALL, NULL), just return the pointer to the
global LC_ALL string array, just as in GLibc.  The burden of
doing so is negligibly for all targets, but adds thread-safety
for gnulib's setlocal_null_r() function, and gnulib can drop
the lock entirely when building for Cygwin.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2023-02-06 16:04:33 +01:00
Victor L. Do Nascimento c6e601de84 libc: arm: Implement setjmp GCC backwards compatibility.
When compiling Newlib for arm targets with GCC 12.1 onward, the
passing of architecture extension information to the assembler is
automatic, making the use of .fpu and .arch_extension directives
in assembly files redundant.

With older versions of GCC, however, these directives must be
hard-coded into the `arm/setjmp.S' file to allow the assembly of
instructions concerning the storage and subsequent reloading of the
floating point registers to/from the jump buffer, respectively.

This patch conditionally adds the `.fpu vfpxd' and `.arch_extension
mve' directives based on compile-time preprocessor macros concerning
GCC version and target architectural features, such that both the
assembly and linking of setjmp.S succeeds for older versions of
Newlib.
2023-02-03 13:07:08 +00:00
Maciej W. Rozycki 963d6c79ea RISC-V: Fix floating-point environment support for soft float
We don't have floating-point exception or non-default rounding mode
support for the RISC-V soft-float environment, `feraiseexcept' and
`fesetround' do nothing unless the `__riscv_flen' macro has been set.
Therefore following ISO C language requirements[1] only define macros
for soft float that correspond to actually supported floating-point
environment features, removing failures from GCC testing such as:

FAIL: gcc.dg/torture/fp-int-convert-timode-3.c   -O0  execution test
FAIL: gcc.dg/torture/fp-int-convert-timode-4.c   -O0  execution test

References:

[1] "Programming languages -- C", ISO/IEC 9899:2023, working draft --
    September 3, 2022, Section 7.6 "Floating-point environment <fenv.h>"

Fixes: 7040b2de08 ("Add RISC-V port for libm")
Signed-off-by: Maciej W. Rozycki <macro@embecosm.com>
2023-01-27 14:25:44 +01:00
Jeff Johnston 9e09d6ed83 Bump up newlib to 4.3.0 2023-01-20 16:01:54 -05:00
Thomas Schwinge 05a2d7a8b3 nvptx: In offloading execution, map '_exit' to 'abort' [GCC PR85463]
This is still not properly resolving <https://gcc.gnu.org/PR85463>
'[nvptx] "exit" in offloaded region doesn't terminate process', but is
one step into that direction, and allows for simplifying some GCC code.
2023-01-19 21:53:02 +01:00
Thomas Schwinge 29b137af80 nvptx: Provide stub 'getpid', 'kill', 'stat'
... as implemented for GCN in 'newlib/libc/sys/amdgcn/*' files, but (for now)
still adding to the catch-all 'newlib/libc/machine/nvptx/misc.c' file.

This is necessary for the GCC/Fortran I/O system, for example.

Co-authored-by: Andrew Stubbs <ams@codesourcery.com>
2023-01-19 21:52:50 +01:00
Thomas Schwinge 654072d7a2 nvptx: Remove newlib ELIX level 1 restriction
Such a hard-coded ELIX level restriction is only being applied for nvptx
newlib -- but we'd actually like higher levels' functions available there,
too.  (Users continue to be able to override this via newlib 'configure',
as for every other newlib target.)

This already enables GCC test cases that currently FAIL due to
'unresolved symbol strndup' ('gcc.dg/builtin-dynamic-object-size-0.c'), or
'unresolved symbol mempcpy' ('gcc.dg/torture/pr45636.c'), for example.

Co-authored-by: Andrew Stubbs <ams@codesourcery.com>
2023-01-19 21:52:06 +01:00
Thomas Schwinge 3b58032de1 nvptx: Don't use global constructor for SSP setup
Given that nvptx newlib currently restricts itself to ELIX level 1, this
is not already a problem.  However, in the following we'd like to lift
that restriction, and then run into:

    [...]/newlib/libc/ssp/stack_protector.c: In function ‘__stack_chk_init’:
    [...]/newlib/libc/ssp/stack_protector.c:31:1: sorry, unimplemented: global constructors not supported on this target
       31 | }
          | ^

GCC patch "nvptx: Support global constructors/destructors via 'collect2'"
has been posted, but not yet accepted.  Until that is resolved, use the
same manual SSP setup as for GCN.
2023-01-19 21:51:09 +01:00
Thomas Schwinge 52cb937004 nvptx: Provide stub 'gettimeofday'
Instead of them FAILing due to 'unresolved symbol gettimeofday', this
makes PASS a number of GCC 'gfortran.dg' test cases, for example.
2023-01-19 21:50:57 +01:00
Jeff Johnston 8af65b8c14 Add amdgcn vectorized math routines to NEWS 2023-01-19 15:14:44 -05:00
Victor L. Do Nascimento 66dfdc5aaf NEWS: report arm ABI break
Add details of ABI-conformance fix to setjmp implementation under
Major changes in newlib version 4.3.0
2023-01-19 15:03:24 -05:00
Sebastian Huber 2e80e1282a NEWS: Add news items 2023-01-19 14:57:17 -05:00
Kwok Cheung Yeung e18743072b amdgcn: Add vectorized math routines
This implements a set of vectorized math routines to be used by the
compiler auto-vectorizer.  Versions for vectors with 2 lanes up to
64 lanes (in powers of 2) are provided.

These routines are based on the scalar versions of the math routines in
libm/common, libm/math and libm/mathfp.  They make extensive use of the GCC
C vector extensions and GCN-specific builtins in GCC.
2023-01-18 13:22:58 -05:00
Mike Frysinger 26f9cfd7a8 libgloss: arm: break newlib dependency
The libgloss port has been reaching back into newlib internals for a
single header whose contents have been frozen for almost a decade.
To break this backwards libgloss->newlib dependency, move the acle
header to the srcroot include/ so everyone can use the same copy.
2023-01-11 01:00:15 -05:00
Victor L. Do Nascimento 31e5ce10db newlib: libc: setjmp M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.  Save the PAC value in the jump buffer so that
longjmp can only return to the authenticated location.
2023-01-10 16:47:02 +00:00
Victor L. Do Nascimento adc36ede11 newlib: libc: aeabi_memset M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.
2023-01-10 14:16:05 +00:00
Victor L. Do Nascimento bddfd64ec2 newlib: libc: aeabi_memmove M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.
2023-01-10 14:16:05 +00:00
Victor L. Do Nascimento 60a50c2846 newlib: libc: memcpy M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.
2023-01-10 14:16:05 +00:00
Victor L. Do Nascimento db30cbee41 newlib: libc: memchr M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.
2023-01-10 14:16:05 +00:00
Victor L. Do Nascimento 5582536896 newlib: libc: strlen M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.

This patch enables PACBTI for all relevant variants of strlen:
     * Newlib for armv8.1-m.main+pacbti
     * Newlib for armv8.1-m.main+pacbti+mve
     * Newlib-nano
2023-01-10 14:16:05 +00:00
Victor L. Do Nascimento ebd922e77a newlib: libc: strcmp M-profile PACBTI-enablement
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.

This patch enables PACBTI for all relevant variants of strcmp:
     * Newlib for armv8.1-m.main+pacbti
     * Newlib for armv8.1-m.main+pacbti+mve
     * Newlib-nano
2023-01-10 14:16:05 +00:00
Victor L. Do Nascimento 9d6b00511e newlib: libc: define M-profile PACBTI-enablement macros
Augment the arm_asm.h header file to simplify function prologues and
epilogues whilst adding support for PACBTI enablement via macros for
hand-written assembly functions.  For PACBTI, both prologues/epilogues
as well as cfi-related directives are automatically amended
accordingly, depending on the compile-time mbranch-protection argument
values.

It defines the following preprocessor macros:
   * HAVE_PAC_LEAF: Indicates whether pac-signing has been requested for
   leaf functions.
   * PAC_LEAF_PUSH_IP: Whether leaf functions should push the pac code
   to the stack irrespective of whether the ip register is clobbered in
   the function or not.
   * STACK_ALIGN_ENFORCE: Whether a dummy register should be added to
   the push list as necessary in the prologue to ensure stack
   alignment preservation at the start of assembly function.  The
   epilogue behavior is likewise affected by this flag, ensuring any
   pushed dummy registers also get popped on function return.

It also defines the following assembler macros:
   * prologue: In addition to pushing any callee-saved registers onto
   the stack, it generates any requested pacbti instructions.
   Pushed registers are specified via the optional `first', `last',
   `push_ip' and `push_lr' macro argument parameters.
   when a single register number is provided, it pushes that
   register.  When two register numbers are provided, they specify a
   rage to save.  If push_ip and/or push_lr are non-zero, the
   respective registers are also saved.  Stack alignment is requested
   via the `align` argument, which defaults to the value of
   STACK_ALIGN_ENFORCE, unless manually overridden.

   For example:

       prologue push_ip=1 -> push {ip}
       prologue push_ip=1, align8=1 -> push {r2, ip}
       prologue push_ip=1, push_lr=1 -> push {ip, lr}
       prologue 1 -> push {r1}
       prologue 1, align8=1 -> push {r0, r1}
       prologue 1 push_ip=1 -> push {r1, ip}
       prologue 1 4 -> push {r1-r4}
       prologue 1 4 push_ip=1 -> push {r1-r4, ip}

   * epilogue: pops registers off the stack and emits pac key signing
   instruction, if requested. The `first', `last', `push_ip',
   `push_lr' and `align' function as per the prologue macro,
   generating pop instead of push instructions.

   Stack alignment is enforced via the following helper macro
   call-chain:

	{prologue|epilogue} ->_align8 -> _preprocess_reglist ->
	  _preprocess_reglist1 -> {_prologue|_epilogue}

   Finally, the necessary cfi directives for adding debug information
   to prologue and epilogue are generated via the following macros:

   * cfisavelist - prologue macro helper function, generating
   necessary .cfi_offset directives associated with push instruction.
   Therefore, the net effect of calling `prologue 1 2 push_ip=1' is
   to generate the following:

       push {r1-r2, ip}
       .cfi_adjust_cfa_offset 12
       .cfi_offset 143, -4
       .cfi_offset 2, -8
       .cfi_offset 1, -12

   * cfirestorelist - epilogue macro helper function, emitting
   .cfi_restore instructions prior to resetting the cfa offset.  As
   such, calling `epilogue 1 2 push_ip=1' will produce:

        pop {r1-r2, ip}
	.cfi_register 143, 12
	.cfi_restore 2
	.cfi_restore 1
	.cfi_def_cfa_offset 0
2023-01-10 14:16:05 +00:00
CompilerAI Research Group ad3f9820b1 Fix memccpy to handle end char >= x80
- use unsigned char variables for optimized version of memccpy
2023-01-03 14:52:47 -05:00
Thomas Schwinge 5841b2f6a4 nvptx: Implement '_exit' instead of 'exit'
... so that all of 'exit', '_exit', '_Exit' work.  'exit' thus becomes the
standard 'newlib/libc/stdlib/exit.c' -- and functions registered via 'atexit'
are now called at return from 'main' or manual 'exit' invocation.
2022-12-22 12:52:15 +01:00
Mike Frysinger 0a7bf8fc4c remove +x bit on source files
These should never be marked executable as they have no shebang and
are pure source files.
2022-12-21 22:38:57 -05:00
Victor L. Do Nascimento 57a08d6b9a libc: arm: setjmp.S code cleanup
The code for setjmp and longjmp contains unconditionally-disabled
legacy FPA code.

Given the code is not used by any targets, remove the code.
2022-12-19 11:22:11 +00:00
Giovanni Bajo 9bba9c2bdd Fix a bug in setjmp for MIPS o32/o64 FPXX/FP64
It seems there is a swapped logic in one of the subcases of
setjmp.S for MIPS: when the FPU registers are 64-bit within
a 32-bit aligned jmp_buf, the code realigns the pointers
before doing 64-bit writes, but the branch logic is swapped:
we must avoid the address adjustement when bit 2 is zero
(that is, the address is already 8-byte aligned).

This always triggers an address error when run, as tested
on a MIPS VR4300 with O64 ABI.
2022-12-19 10:38:05 +01:00
Jeff Johnston c8130c3fe8 Fix 3 other instances of Reme typo (should be Remez) 2022-12-16 14:18:56 -05:00
Jeff Johnston c04c01524d Revert "amdgcn: Add vectorized math routines"
This reverts commit 125e39bfea.
2022-12-16 12:28:48 -05:00
Nadav Rotem abf672604b Fix a typo in the comment.
The implementation of expf() explains how approximation in the range [0 - 0.34] is done. The comment describes the "Reme" algorithm for constructing the polynomial. This is a typo and should be the "Remez" algorithm. The remez algorithm (or minimax) is used to calculate the coefficients of polynomials in other implementations of exp(0 and log().

See more:
https://en.wikipedia.org/wiki/Remez_algorithm
2022-12-16 12:18:28 -05:00
Kwok Cheung Yeung 125e39bfea amdgcn: Add vectorized math routines
This implements a set of vectorized math routines to be used by the
compiler auto-vectorizer.  Versions for vectors with 2 lanes up to
64 lanes (in powers of 2) are provided.

These routines are based on the scalar versions of the math routines in
libm/common, libm/math and libm/mathfp.  They make extensive use of the GCC
C vector extensions and GCN-specific builtins in GCC.
2022-12-16 12:18:14 -05:00
Victor L. Do Nascimento 15ad816ddd libc: arm: fix setjmp abi non-conformance
As per the arm Procedure Call Standard for the Arm Architecture
section 6.1.2 [1], VFP registers s16-s31 (d8-d15, q4-q7) must be
preserved across subroutine calls.

The current setjmp/longjmp implementations preserve only the core
registers, with the jump buffer size too small to store the required
co-processor registers.

In accordance with the C Library ABI for the Arm Architecture
section 6.11 [2], this patch sets _JBTYPE to long long adjusting
_JBLEN to 20.

It also emits vfp load/store instructions depending on architectural
support, predicated at compile time on ACLE feature-test macros.

[1] https://github.com/ARM-software/abi-aa/blob/main/aapcs32/aapcs32.rst
[2] https://github.com/ARM-software/abi-aa/blob/main/clibabi32/clibabi32.rst
2022-12-13 15:50:35 +00:00
Mike Frysinger c8d5210337 newlib: info: tweak iconv node to avoid collisions
We have "Iconv" and "iconv" nodes which generates Iconv.html and
iconv.html files.  On a case-insensitive filesystem, these collide.
Rename the "Iconv" node to match the chapter name that it's already
using to avoid the issue.
2022-12-13 05:22:09 -05:00
Corinna Vinschen 55de3fdd0e Cygwin: define FILE as struct __sFILE64, not as __sFILE
Until Cygwin 3.3.6, we define __LARGE64_FILES unconditionally, so we
were using the type __sFILE64 even for 64 bit.  That was lazy and wrong.
so commit 2902b3a09e ("Cygwin: drop requirement to build newlib's
stdio64") tried to fix that.

Unfortunately this patch forgot to take the exposure of the typename
__sFILE64 in userspace into account.  This leads to trouble in C++ due
to name mangling.

Commit 0f376ae220 tried to fix this by just renaming __sFILE to
__sFILE64 by using a macro.  While __sFILE and __sFILE64 are the same
size, they are not exactly congruent.

To avoid backward compatibility problems, make sure to define FILE
as the  real __sFILE64, and make sure that __sFILE is not defined at
all on Cygwin.

Fixes: 0f376ae220 ("Cygwin: rename __sFILE to __sFILE64 for backward
compatibility")
Fixes: 2902b3a09e ("Cygwin: drop requirement to build newlib's stdio64")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2022-12-08 17:16:20 +01:00
Alexey Lapshin 0b09753a3f libc: fix fropen/fwopen compile warnings
This patch fixes warnings that appears when compiling:

#define fwopen(__cookie,__fn) funopen(__cookie, (int (*)())0, __fn,
(fpos_t (*)())0, (int (*)())0)
Expands to:

funopen(__null, (int (*)())0, &app_printf, (fpos_t (*)())0, (int
(*)())0)
argument of type "int (*)()" is incompatible with parameter of type
"int (*)(void *__cookie, char *__buf, int __n)"C/C++(167)
invalid conversion from 'fpos_t (*)()' {aka 'long int (*)()'} to
'fpos_t (*)(void*, fpos_t, int)' {aka 'long int (*)(void*,

Discussion is here:
https://github.com/espressif/arduino-esp32/issues/7407
2022-12-07 13:10:24 +01:00
Corinna Vinschen 8d138c3f66 Cygwin: fix LC_CTYPE in global locale to be a real C.UTF-8 locale
https://cygwin.com/pipermail/cygwin/2022-December/252571.html

Cygwin's default locale is "C.UTF-8" as far as LC_CTYPE settings
are concerned.  However, while __global_locale contains fixed
mbtowc and wctomb pointers, the lc_ctype_T pointer is still pointing
to _C_ctype_locale, representing the standard "C" locale.

The problem with this is that the codeset name as well as MB_CUR_MAX
is wrong.

Fix this by introducing a new lc_ctype_T structure called
_C_utf8_ctype_locale, setting the default codeset to "UTF-8" and
MB_CUR_MAX to 6.  Use this as lc_ctype_T pointer in __global_locale
by default on Cygwin.

Fixes: a6a477fa81 ("POSIX-1.2008 per-thread locales, groundwork part 1")
Co-Authored-By: Takashi Yano <takashi.yano@nifty.ne.jp>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2022-12-03 16:16:30 +01:00
Tobias Burnus b7aca332ce amdgcn: Use __builtin_gcn_ in libc/machine/amdgcn/getreent.c
Call __builtin_gcn_get_stack_limit and __builtin_gcn_first_call_this_thread_p
to reduce dependency on some register/layout assumptions by using the new
GCC mainline (GCC 13) builtins, if they are available. If not, the existing
code is used.
2022-11-22 18:05:34 -05:00
Tobias Burnus b9898fc993 amdgcn: Replace asm("s8") by __builtin_gcn_kernarg_ptr if existing
Check whether __builtin_gcn_kernarg_ptr is available and, if it is,
call it instead using the hard-coded 'asm("s8")' in:
* newlib/libc/machine/amdgcn/exit-value.h (exit_with_int)
* newlib/libc/machine/amdgcn/mlock.c (sbrk)
* newlib/libc/sys/amdgcn/write.c (write)

 newlib/libc/machine/amdgcn/exit-value.h |  6 ++++++
 newlib/libc/machine/amdgcn/mlock.c      | 10 +++++++---
 newlib/libc/sys/amdgcn/write.c          |  4 ++++
 3 files changed, 17 insertions(+), 3 deletions(-)
2022-11-21 13:10:29 +01:00
Jon Turney c03f0c3062
makedocbook: Fix false report of unhandled texinfo command
During 'make man', makedocbook falsely reports "texinfo command
'@modifier' remains in output" while processing the setlocal(3) manpage,
which contains that literal string.

Move the check for unrecognized texinfo commands to before processing
'@@' (an escaped '@') in the texinfo source, and teach it to ignore
them.

Improve that check slightly, so it catches non-alphabetic texinfo
commands, of which there are few.

Now we don't have false positives, we can make unrecognized texinfo
commands fatal to manpage generation, rather than leaving them verbatim
in the generated manpage.
2022-11-12 14:09:11 +00:00
Jon Turney 999925b253
makedocbook: Adjust inline whitespace to fix flake8 warnings 2022-11-12 14:09:10 +00:00