Add a _REENT_CVTLEN() macro to encapsulate access to the _cvtlen
member of struct reent. This will help to replace the struct
member with a thread-local storage object in a follow-up patch.
Add a _REENT_CLEANUP() macro to encapsulate access to the
__cleanup member of struct reent. This will help to replace the
struct member with a thread-local storage object in a follow up
patch.
Add a _REENT_LOCALE() macro to encapsulate access to the _locale
member of struct reent. This will help to replace the struct
member with a thread-local storage object in a follow up patch.
Add a _REENT_INC() macro to encapsulate access to the _inc member
of struct reent. This will help to replace the struct member with
a thread-local storage object in a follow up patch.
Add a _REENT_STDERR() macro to encapsulate access to the _stderr
member of struct reent. This will help to replace the struct
member with a thread-local storage object in a follow up patch.
Add a _REENT_STDOUT() macro to encapsulate access to the _stdout
member of struct reent. This will help to replace the struct
member with a thread-local storage object in a follow up patch.
Add a _REENT_STDIN() macro to encapsulate access to the _stdin
member of struct reent. This will help to replace the struct
member with a thread-local storage object in a follow up patch.
Add a _REENT_ERRNO() macro to encapsulate the access to the
_errno member of struct reent. This will help to replace the
structure member with a thread-local storage object in a follow
up patch.
Replace uses of __errno_r() with _REENT_ERRNO(). Keep __errno_r() macro for
potential users outside of Newlib.
Use this macro to access the _emergency member of struct _reent. This macro
will help to replace the _emergency member of struct _reent with a thread-local
storage object in a follow up patch.
This makes roundup2/rounddown2 type- and const-preserving and allows
using it on pointer types without casting to uintptr_t first. Not
performing pointer-to-integer conversions also helps the compiler's
optimization passes and can therefore result in better code generation.
When using it with integer values there should be no change other than
the compiler checking that the alignment value is a valid power-of-two.
I originally implemented these builtins for CHERI a few years ago and
they have been very useful for CheriBSD. However, they are also useful
for non-CHERI code so I was able to upstream them for Clang 10.0.
Rationale from the clang documentation:
Clang provides builtins to support checking and adjusting alignment
of pointers and integers. These builtins can be used to avoid relying
on implementation-defined behavior of arithmetic on integers derived
from pointers. Additionally, these builtins retain type information
and, unlike bitwise arithmetic, they can perform semantic checking on
the alignment value.
There is also a feature request for GCC, so GCC may also support it in
the future: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98641
Reviewed By: brooks, jhb, imp
Differential Revision: https://reviews.freebsd.org/D28332
The age of the intel compiler support is so old as to be
uninteresting. No recent recports of intel compiler support have been
received. Remove all the special case workarounds for the Intel
compiler. Should there be interest in supporting the compiler, contact
me and I'll work with people to make it happen, though I suspect these
instances are more likely to be in the way than to be helpful.
Reviewed by: cem, emaste, vangyzen, dim
Differential Revision: https://reviews.freebsd.org/D26817
Define FD_SETSIZE (<sys/select.h>) to be 1024 by default, and define
NOFILE (<sys/param.h>) to be OPEN_MAX (== 3200) by default.
Remove the comment in <sys/select.h> that FD_SETSIZE should be >=
NOFILE.
Bump API minor.
Addresses: https://cygwin.com/pipermail/cygwin/2022-July/251839.html
The _REENT_GLOBAL_STDIO_STREAMS was introduced by commit
668a4c8722 in 2017. Since then it was enabled by
default for RTEMS. Recently, the option was enabled for Cygwin which
previously used an alternative implementation to use global stdio streams.
In Newlib, the stdio streams are defined to thread-specific pointers
_reent::_stdin, _reent::_stdout and _reent::_stderr. If the option is disabled
(the default for most systems), then these pointers are initialized to
thread-specific FILE objects which use file descriptors 0, 1, and 2,
respectively. There are at least three problems with this:
(1) The thread-specific FILE objects are closed by _reclaim_reent(). This
leads to problems with language run-time libraries that provide wrappers to
the C/POSIX stdio streams (for example C++ and Ada), since they use the
thread-specific FILE objects of the initialization thread. In case the
initialization thread is deleted, then they use freed memory.
(2) Since thread-specific FILE objects are used with a common output device via
file descriptors 0, 1 and 2, the locking at FILE object level cannot ensure
atomicity of the output, e.g. a call to printf().
(3) There are resource managment issues, see:
https://sourceware.org/pipermail/newlib/2022/019558.htmlhttps://bugs.linaro.org/show_bug.cgi?id=5841
This patch enables the _REENT_GLOBAL_STDIO_STREAMS behaviour for all Newlib
configurations and removes the option. This removes a couple of #ifdef blocks.
Remove "32" or "64" from each of the following names: acl32,
aclcheck32, aclfrommode32, aclfrompbits32, aclfromtext32, aclsort32,
acltomode32, acltopbits32, acltotext32, facl32, fchown32, fcntl64,
fstat64, _fstat64, _fstat64_r, ftruncate64, getgid32, getgrent32,
getgrgid32, getgrnam32, getgroups32, getpwuid32, getpwuid_r32,
getuid32, getuid32, initgroups32, lseek64, lstat64, mknod32, mmap64,
setegid32, seteuid32, setgid32, setgroups32, setregid32, setreuid32,
setuid32, stat64, _stat64_r, truncate64.
Remove prototypes and macro definitions of these names.
Remove "#ifndef __INSIDE_CYGWIN__" from some headers so that the new
names will be available when compiling Cygwin.
Remove aliases that are no longer needed.
Include <unistd.h> in fhandler_clipboard.cc for the declarations of
geteuid and getegid.
The compiler warns the double parentheses are unnecessary in some
target, and cause fail cases when doing some testcases in regression.
gcc/testsuite/g++.dg/warn/Wstringop-overflow-6.C
Remove the unnecessary parentheses will fix it. See more details in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85775
Same like in commit 0542583129,
Author: Maxim Blinov <maxim.blinov@embecosm.com>
Date: Thu Jul 22 22:41:42 2021 +0100
Remove unneccesary parenthesis around declarator
Thanks for Sebastian Huber's remind!
For the exit processing only members of _GLOBAL_REENT were used by default. If
the _REENT_GLOBAL_ATEXIT option was enabled, then the data structures were
provided through dedicated global objects. Make this option the default.
Remove the option. Rename struct _reent members _atexit and _atexit0 to
_reserved_6 and _reserved_7, respectively. Provide them only if
_REENT_BACKWARD_BINARY_COMPAT is defined.
Rename struct _reent::_new::_unused members _nextf and _nmalloc to _reserved_3
and _reserved_4, respectively. Rename struct _reent::_new member _unused to
_reserved_5. Provide them only if _REENT_BACKWARD_BINARY_COMPAT is defined.
Remove unused _N_LISTS define.
Add the --enable-newlib-reent-binary-compat configure option. This option is
disabled by default. If enabled, then unused members in struct _reent are
preserved to maintain the structure layout.
Added a new global __sglue object for all configurations.
Decouples the global file object list from the _GLOBAL_REENT
structure by using this new object instead of the __sglue member
of _GLOBAL_REENT in __sfp() and _fwalk_sglue().
Replaced _fwalk_reent() with _fwalk_sglue(). The change adds an
extra __sglue object as a parameter, which will allow the passing
of a global __sglue object separate from the __sglue member of
struct _reent. The global __sglue object will be added in a
follow-on patch.
Added _REENT_INIT_SGLUE and _REENT_INIT_SGLUE_ZEROED macros
to initialize __sglue member of struct _reent. This allows
further simplification of __sinit() and facilitates the removal
of __sglue as a member of struct _reent for certain configurations
in a follow-on patch.
The ndbm.c build broke with:
Commit 357d7fcc6
In <stdio.h> provide only necessary types
The above commit exposed a latent missing-header bug:
newlib/newlib/libc/include/ndbm.h:83:38: error: unknown type name ‘mode_t’
Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
Remove the pointer indirection through the read-only _global_impure_ptr and
directly use a externally visible _impure_data object of type struct _reent.
This enables the static initialization of global data structures in a follow up
patch. In addition, we get rid of a machine-specific file.
By including sys/_stdint.h, all types from stdint.h are
exposed even if stdint.h isn't pulled in explicitely. Include
<machine/_default_types.h instead. Fix up newlib and Cygwin
files which rely on stdint.h types, too.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Remove dependency on __sdidinit member of struct _reent to check
object initialization. Like __sdidinit, the __cleanup member of
struct _reent is initialized in the __sinit() function. Checking
initialization against __cleanup serves the same purpose and will
reduce overhead in the __sfp() function in a follow up patch.
- This patch uses gdtoa imported from OpenBSD if newlib configure
option "--enable-newlib-use-gdtoa=no" is NOT specified. gdtoa
provides more accurate output and faster conversion than legacy
ldtoa, while it requires more heap memory.
This patch fixed a problem which isn't in newlib, but in projects
incorrectly using symbols from the reserved namespace.
This reverts commit 3ba1bd0d9d.
- Currently, printf("%La\n", 1e1000L) crashes with segv due to lack
of frexpl() function. With this patch, frexpl() function has been
implemented in libm to solve this issue.
Addresses: https://sourceware.org/pipermail/newlib/2021/018718.html
Use the same name as glibc & gnulib to indicate "newlib itself is
being compiled". This also harmonizes the codebase a bit in that
_LIBC was already used in places instead of _COMPILING_NEWLIB.
Building for bfin-elf, mips-elf, and x86_64-pc-cygwin produces
the same object code.
Some distros enable _FORTIFY_SOURCE by default which upsets building
newlib which itself implements the logic for this define. For example,
building gets.c fails because the includes set up a gets() macro which
expands in the definition.
Since newlib isn't prepared to build itself with _FORTIFY_SOURCE, and
it's not clear if it's even useful, ignore it when building the code.
This also matches what glibc is doing.
We're seeing a build failure in GNU sim code which is using _P locally
but the ctype.h define clashes with it. Rename these to use the same
symbols that glibc does. They're a bit more verbose, but seems likely
that we'll have fewer conflicts if glibc isn't seeing them.
However, these shortnames are still used internally by ctype modules
to produce pretty concise source code, so move the short names to the
internal ctype_.h where short name conflicts shouldn't show up.
Currently, newlib does not declare strsignal if DEFS_H is defined,
ostensibly to work around a gdb bug. However, gdb itself compiles
even with this ifndef removed, and this makes sim (another part of
gdb) fail to compile.
Since it is not clear exactly what issue this was working around,
this patch just replaces that ifdef with the correct check,
i.e. __POSIX_VISIBLE >= 200809.
Add specialized rotations RB_RED_ROTATE_LEFT() and RB_RED_ROTATE_RIGHT() which
may be used if we rotate a red child which has a black sibling. Such a red
node must have at least two child nodes so that the following red-black tree
invariant is fulfilled:
Every path from a given node to any of its descendant NULL nodes goes through
the same number of black nodes.
PARENT
/ \
BLACK RED
/ \
BLACK BLACK
Add specialized rotations RB_PARENT_ROTATE_LEFT() and RB_PARENT_ROTATE_RIGHT()
which may be used if the parent node exists and the direction of the child is
known. The specialized rotations are derived from RB_ROTATE_LEFT() and
RB_ROTATE_RIGHT() where the RB_SWAP_CHILD() was replaced by a simple
assignment.
Matt Joyce
Sebastian Huber
Warner Losh
Mark Johnston
Alex Richardson
Ken Brown
Jia-Wei Chen
Dimitar Dimitrov
Corinna Vinschen
Andrea Corallo
Takashi Yano
Mike Frysinger
Christian Biesinger via Newlib