Commit Graph

13 Commits

Author SHA1 Message Date
Matt Joyce ea99f21ce6 Add --enable-newlib-reent-thread-local option
By default, Newlib uses a huge object of type struct _reent to store
thread-specific data.  This object is returned by __getreent() if the
__DYNAMIC_REENT__ Newlib configuration option is defined.

The reentrancy structure contains for example errno and the standard input,
output, and error file streams.  This means that if an application only uses
errno it has a dependency on the file stream support even if it does not use
it.  This is an issue for lower end targets and applications which need to
qualify the software according to safety standards (for example ECSS-E-ST-40C,
ECSS-Q-ST-80C, IEC 61508, ISO 26262, DO-178, DO-330, DO-333).

If the new _REENT_THREAD_LOCAL configuration option is enabled, then struct
_reent is replaced by dedicated thread-local objects for each struct _reent
member.  The thread-local objects are defined in translation units which use
the corresponding object.
2022-07-13 06:55:46 +02:00
Matt Joyce db2123caf8 Add _REENT_SIG_FUNC(ptr)
Add a _REENT_SIG_FUNC() macro to encapsulate access to the
_sig_func member of struct reent. This will help to replace the
struct member with a thread-local storage object in a follow up
patch.
2022-07-13 06:55:46 +02:00
Matt Joyce f3b8138239 Add _REENT_ERRNO(ptr)
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.
2022-07-13 06:55:41 +02:00
Yaakov Selkowitz 9087163804 ansification: remove _DEFUN
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:26 -06:00
Yaakov Selkowitz fff27f8429 ansification: remove _DEFUN_VOID
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:19 -06:00
Yaakov Selkowitz 6783860a2e ansification: remove _AND
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:05 -06:00
Yaakov Selkowitz b88cfbc1e5 signal: remove TRAD_SYNOPSIS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2017-12-01 03:41:51 -06:00
DJ Delorie 69bfb481a8 * libc/signal/signal.c (_raise_r): Don't attempt to initialize the
signal table, just use a default, in case initialization cause
recursion.
2007-10-31 22:22:31 +00:00
Jeff Johnston 239c2bf93e 2005-10-28 Bob Wilson <bob.wilson@acm.org>
* libc/misc/unctrl.c: Replace FUNCTION description.
        * libc/signal/signal.c: Remove documentation for raise and  _raise_r.
        * libc/stdio/getdelim.c: Fix spelling errors.
        * libc/stdio/getw.c: Put RETURNS on a separate line.  Fix  punctuation.
        * libc/stdio/putw.c: Likewise.
        * libc/stdlib/a64l.c: Fix formatting, spelling and  punctuation in
        documentation.
        * libc/stdlib/assert.c: Do not capitalize FUNCTION description.
        * libc/stdlib/efgcvt.c: Add spaces to FUNCTION description.
        * libc/stdlib/envlock.c: Use em-dash in FUNCTION description.
        * libc/stdlib/mlock.c: Likewise.
        * libc/stdlib/mstats.c: Likewise.
        * libc/time/tzlock.c: Likewise.
        * libc/stdlib/rand.c: Use "multi-threaded" and "thread-safe"  in NOTES.
        * libc/stdlib/rand48.c: Remove extra space in FUNCTION  description
        and hyphenate "pseudo-random".
        * libc/string/bcmp.c: Remove extra blank lines in  documentation.
        * libc/string/strncat.c: Likewise.
        * libc/string/memchr.c: Remove extra ">" character in  documentation.
        * libc/string/strcspn.c: Use "characters" instead of "chars".
        * libc/string/strpbrk.c: Likewise.
        * libc/string/strerror_r.c: Capitalize "GNU".
        * libc/string/strnlen.c: Likewise.
        * libc/string/strtok.c: Fix formatting, spelling and  punctuation in
        documentation.  Use "multi-threaded" and "thread-safe" in  NOTES.
        * libc/string/wcscat.c: Split PORTABILITY into two paragraphs.
        * libc/string/wcschr.c: Likewise.
        * libc/string/wcscmp.c: Likewise.
        * libc/string/wcscpy.c: Likewise.
        * libc/string/wcscspn.c: Likewise.
        * libc/string/wcslen.c: Likewise.
        * libc/string/wcsncat.c: Likewise.
        * libc/string/wcsncmp.c: Likewise.
        * libc/string/wcsncpy.c: Likewise.
        * libc/string/wcsnlen.c: Likewise.
        * libc/string/wcspbrk.c: Likewise.
        * libc/string/wcsrchr.c: Likewise.
        * libc/string/wcsspn.c: Likewise.
        * libc/string/wmemchr.c: Likewise.
        * libc/string/wmemcmp.c: Likewise.
        * libc/string/wmemcpy.c: Likewise.
        * libc/string/wmemset.c: Likewise.
        * libc/string/wmemmove.c: Likewise.  Also fix FUNCTION  description.
        * libc/string/wcswidth.c: Formatting and punctuation in  documentation.
        * libc/string/wcwidth.c: Likewise.
        * libm/common/s_modf.c: Remove extra period from documentation.
        * libm/math/s_isnan.c: Fix formatting, grammar and  punctuation in
        documentation.
        * libm/mathfp/s_isnan.c: Likewise.
        * libm/math/s_ldexp.c: Fix punctuation.
        * libm/mathfp/s_ldexp.c: Likewise.
        * libm/math/w_log.c: Likewise.
        * libm/mathfp/s_logarithm.c: Likewise.
        * libm/math/w_j0.c: Add spaces to FUNCTION description.
        * libm/mathfp/w_jn.c: Likewise.
2005-10-28 21:21:08 +00:00
Jeff Johnston 729d1ff9d8 2003-06-06 Jeff Johnston <jjohnstn@redhat.com>
* libc/argz/argz_add.c: Change to use _DEFUN macro for function
        definition.
        * libc/argz/argz_add_sep.c: Ditto.
        * libc/argz/argz_append.c libc/argz/argz_count.c: Ditto.
        * libc/argz/argz_create.c libc/argz/argz_create_sep.c: Ditto.
        * libc/argz/argz_delete.c libc/argz/argz_extract.c: Ditto.
        * libc/argz/argz_insert.c libc/argz/argz_next.c: Ditto.
        * libc/argz/argz_replace.c libc/argz/argz_stringify.c: Ditto.
        * libc/argz/envz_add.c libc/argz/envz_entry.c: Ditto.
        * libc/argz/envz_get.c libc/argz/envz_merge.c: Ditto.
        * libc/argz/envz_remove.c libc/argz/envz_strip.c: Ditto.
        * libc/locale/nl_langinfo.c libc/misc/ffs.c: Ditto.
        * libc/posix/closedir.c libc/posix/creat.c: Ditto.
        * libc/posix/execl.c libc/posix/execle.c: Ditto.
        * libc/posix/execlp.c libc/posix/execve.c: Ditto.
        * libc/posix/isatty.c libc/posix/opendir.c: Ditto.
        * libc/posix/popen.c libc/posix/readdir.c: Ditto.
        * libc/posix/readdir_r.c libc/posix/rewinddir.c: Ditto.
        * libc/posix/scandir.c libc/posix/seekdir.c: Ditto.
        * libc/posix/telldir.c libc/search/hcreate.c: Ditto.
        * libc/search/tdelete.c libc/search/tdestroy.c: Ditto.
        * libc/search/tfind.c libc/search/tsearch.c: Ditto.
        * libc/search/twalk.c libc/signal/signal.c: Ditto.
2003-06-06 19:57:51 +00:00
Geoffrey Keating b944c6f661 * libc/signal/signal.c (__sigtramp_r): ISO C requires
case labels to be integral constant expressions, so
	use an if/else tree instead.
	(_raise_r): Likewise.
2000-09-19 19:39:45 +00:00
Jeff Johnston c87be3e4d6 Mon Apr 17 12:46:00 2000 Marek Michalkiewicz <marekm@linux.org.pl>
* libc/signal/signal.c (_signal_r) : Removed unused local variable temp.        * libc/stdio/findfp.c (std): Added declaration of flags and file.
        * libc/stdio/mktemp.c (_gettemp, _mkstemp_r, mkstemp): Added int
        return type.
        * libc/stdio/putchar.c (putchar): Added return statement.
        * libc/stdio/refill.c (lflush): Added correct parentheses.
        * libc/stdio/vfprintf.c (_VFPRINTF_R): Ditto.
        * libc/stdio/vfscanf.c (__svfscanf): Changed sprintf call which
        prints long value to use l qualifier.
        * libc/stdlib/dtoa.c (_dtoa_r): Added parentheses to remove warning
        messages and initialized local values: ilim, ilim1, and spec_case.
        * libc/stdlib/ecvtbuf.c (print_e): Removed unused variable dp.
        * libc/stdlib/mbctype.h (_issjis1, _issjis2): Added parentheses.
        * libc/stdlib/mprec.c: Ditto.
        * libc/stdlib/setenv_r.c: Ditto.
        * libc/stdlib/strtod.c: Ditto.
        * libc/stdlib/strtol.c: Ditto.
        * libc/stdlib/strtoul.c: Ditto.
        * libm/common/sf_expm1.c: Added curly braces to if else clauses.
        * libm/common/sf_log1p.c: Ditto.
        * libm/common/sf_scalbn.c: Ditto.
        * libm/math/ef_log.c: Ditto.
2000-04-17 17:10:18 +00:00
Christopher Faylor 8a0efa53e4 import newlib-2000-02-17 snapshot 2000-02-17 19:39:52 +00:00