Commit Graph

3711 Commits

Author SHA1 Message Date
Ryan Libby de1380c36b bitset: rename confusing macro NAND to ANDNOT
s/BIT_NAND/BIT_ANDNOT/, and for CPU and DOMAINSET too.  The actual
implementation is "and not" (or "but not"), i.e. A but not B.
Fortunately this does appear to be what all existing callers want.

Don't supply a NAND (not (A and B)) operation at this time.

Discussed with:	jeff
Reviewed by:	cem
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D22791
2022-06-22 10:15:26 +02:00
Ryan Libby 96c645a0b1 bitset: avoid pessimized code when bitset size is not constant
We have a couple optimizations for when the bitset is known to be just
one word.  But with dynamically sized bitsets, it was actually more work
to determine the size than just to do the necessary computation.  Now,
only use the optimization when the size is known to be constant.

Reviewed by:	markj
Discussed with:	jeff
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D22639
2022-06-22 10:15:26 +02:00
Jeff Roberson a6bd733db9 Use a precise bit count for the slab free items in UMA.
This significantly shrinks embedded slab structures.

Reviewed by:	markj, rlibby (prior version)
Differential Revision:	https://reviews.freebsd.org/D22584
2022-06-22 10:15:26 +02:00
Sebastian Huber a13a044c17 RTEMS: Remove FreeBSD version tags 2022-06-22 10:14:38 +02:00
Sebastian Huber e84814b3e4 Regenerate configure and newlib.hin
In commit b0cb9f85ca the regeneration of the
configure and newlib.hin files was missing.
2022-06-21 08:56:33 +02:00
Sebastian Huber b0cb9f85ca Use global stdio streams for all configurations
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.html

    https://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.
2022-06-10 20:13:52 +02:00
Sebastian Huber c4d4439c42 Fix __fp_lock_all() and __fp_unlock_all()
For _REENT_GLOBAL_STDIO_STREAMS, lock/unlock all FILE objects.  In the
repository, this function is only used by Cygwin during process forks.  Since
Cygwin enabled _REENT_GLOBAL_STDIO_STREAMS recently, without this fix no FILE
object at all was locked.
2022-06-10 20:13:52 +02:00
Sebastian Huber 866f6c909f Clarify struct _reent comment 2022-06-08 10:42:31 +02:00
Sebastian Huber 14fc9be234 Fix __sglue inititialization
Do not initialize __sglue with the FILE objects of _GLOBAL_REENT to avoid a
double use in the !_REENT_SMALL and !_REENT_GLOBAL_STDIO_STREAMS configurations
which didn't use a thread-specific reentrancy structure.
2022-06-07 21:28:25 +02:00
Ken Brown 2d9b48760c Cygwin: simplify some function names
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.
2022-05-29 17:45:52 -04:00
jdoubleu e93bb6f985 Add test cases for parser errors after reworked parsing behavior. 2022-05-27 11:42:49 -04:00
Jeff Johnston 2dbdf66b91 Modify tzset_r.c to handle errors
- change __tzset_r so errors end up setting the timezone to
  unnamed UTC
2022-05-27 11:05:11 -04:00
Sebastian Huber 03e815a91b Use weak reference for _REENT_SMALL
Avoid a strong reference to __sfp[] for _impure_data.  The __sfp[] is linked in
if __sinit() is used for example.
2022-05-19 19:01:49 +02:00
Sebastian Huber 382550072b Fix __sFILE::_lock initialization
The __sFILE::_lock member is present if __SINGLE_THREAD__ is not defined.  In
this case, it is initialized in __sfp().  It is a bug to do it sometimes also
in std().
2022-05-19 19:01:49 +02:00
Jia-Wei Chen 12d07e1ddd newlib: libc: reent.h: remove unnecessary parentheses
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!
2022-05-18 12:37:27 +02:00
Sebastian Huber 2faeaf50fd Use global atexit data for all configurations
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.
2022-05-18 07:45:09 +02:00
Sebastian Huber 9035e406cb Optional struct _reent::_new::_unused
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.
2022-05-18 07:45:09 +02:00
Sebastian Huber 84d8b9d1b3 Optional struct _reent::_new::_reent::_unused_rand
Rename struct _reent member _unused_rand to _reserved_2.  Provide it only if
_REENT_BACKWARD_BINARY_COMPAT is defined.
2022-05-18 07:45:09 +02:00
Sebastian Huber 00e467bec7 Optional struct _reent::_unspecified_locale_info
Rename struct _reent member _unspecified_locale_info to _reserved_1.  Provide
it only if _REENT_BACKWARD_BINARY_COMPAT is defined.
2022-05-18 07:45:09 +02:00
Sebastian Huber ad6d271eb6 Optional struct _reent::__unused_sdidinit
Rename struct _reent member __unused_sdidinit to _reserved_0.  Provide it only
if _REENT_BACKWARD_BINARY_COMPAT is defined.
2022-05-18 07:45:09 +02:00
Sebastian Huber 065d77dd02 Add --enable-newlib-reent-binary-compat
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.
2022-05-18 07:45:09 +02:00
Sebastian Huber 5c7af4227d Use right lock release in __register_exitproc() 2022-05-18 07:45:09 +02:00
Sebastian Huber e826fbb2ae Fix stdio exit handling
Make sure that the stdio exit handler is set in all stdio initialization paths.

The bug was introduced by commit 26747c47bc.
2022-05-17 15:04:12 +02:00
Sebastian Huber 5bf4e0030e newlib: Regenerate Makefile.in
Regenerate Makefile.in to include changes in Makefile.am of commit
81b7cf09fa.
2022-05-16 07:18:29 +02:00
Sebastian Huber 01c823efb7 Make cleanup_glue() static
Remove cleanup_glue from the list of symbols exported by Cygwin.
2022-05-13 12:47:29 +02:00
Matt Joyce 0a862d1319 Remove __sglue member for one configuration
Remove __sglue member of struct reent when _REENT_GLOBAL_STDIO_STREAMS is
defined.
2022-05-13 12:47:29 +02:00
Matt Joyce 8b96542ed1 Add global __sglue object for all configurations
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().
2022-05-13 12:41:10 +02:00
Sebastian Huber 3941c8a88a stdio: Replace _fwalk_reent() with _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.
2022-05-13 12:40:10 +02:00
Matt Joyce 26747c47bc Add stdio_exit_handler()
Add a dedicated stdio exit handler to avoid using _GLOBAL_REENT in exit().
2022-05-13 12:35:00 +02:00
Matt Joyce 4b28f3c125 Add CLEANUP_FILE define
Define the configuration-dependent constant CLEANUP_FILE for use in
cleanup_stdio(). This will reduce duplicate code during the addition
of a dedicated stdio atexit handler in a follow-on patch.
2022-05-13 12:32:38 +02:00
Matt Joyce a7bdda0503 Move __sglue initializations to __sfp()
Moved last remaining  __sglue initializations from __sinit() to
__sfp(). The move better encapsulates access to __sglue and
facilitates its decoupling from struct _reent in a follow-on patch.
2022-05-13 12:32:38 +02:00
Matt Joyce d83aa402b7 Remove __sinit_locks / __sinit_recursive_mutex
Remove __sinit_lock_acquire() and __sinit_lock_release().  Replace these with
__sfp_lock_acquire() and __sfp_lock_release(), respectively.  This eliminates a
potential deadlock issue between __sinit() and __sfp().  Remove now unused
__sinit_recursive_mutex and __lock___sinit_recursive_mutex.
2022-05-13 12:31:56 +02:00
Matt Joyce e5e36867f8 Add two __sglue initialization macros
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.
2022-05-13 12:28:34 +02:00
Sebastian Huber d041db3792 Declare global __sf[] only once
Reduced number of global __sf[] declarations from two to one,
simplifying initializations in sys/reent.h.
2022-05-13 12:28:34 +02:00
Matt Joyce 92896d4daa Remove duplicate sglue initializations
Removed duplicate sglue initializations from __sinit(). These
are already initialized in the _REENT_INIT macro in sys/reent.h.
This simplification enables the reduction of _GLOBAL_REENT
dependency in a follow-on patch.
2022-05-13 12:28:34 +02:00
Matt Joyce 5a066d46c9 Remove duplicate stdio initializations
Removed duplicate stdio initializations from __sinit(). These
are already initialized in the _REENT_INIT macro in sys/reent.h.
This simplification enables the reduction of _GLOBAL_REENT
dependency in a follow-on patch.
2022-05-13 12:28:34 +02:00
Jon Turney 323b61f271 Generate manpages for functions in chapter sys.tex
Also generate manpages for functions in chapter sys.tex, omitted in
error.
2022-05-04 17:06:19 -04:00
Jon Turney a9d2d7baae Fix warning about duplicate id in docbook XML
../newlib/libc/libc.xml:22242: element refentry: validity error : ID iconv already defined
    <refentry id="iconv">

Use a separate namespace for chaper ids, to avoid collision between the
ids for the chapter and function 'iconv', now that iconv documentation
is generated unconditionally.
2022-05-04 17:06:07 -04:00
Jon Turney 81b7cf09fa Silence xsltproc when writing manpages
Unless make is invoked with V=1, have xmlto pass the parameter
'man.output.quietly=1' to xsltproc to suppress "Note: Writing foo.N"
output from the manpages stylesheet.

(This doesn't quite do what it says: The output is not silenced if V has
any value, including 0.  You could consider that either a bug or a
feature.)
2022-05-04 17:05:52 -04:00
Jon Turney d51aab2abd Add build avoidance for 'make man'
This will generate multiple manpage files as an output, but we don't
know what they will be called, so use a timestamp for build avoidance.
2022-05-04 17:05:41 -04:00
Jon Turney 3d64a500f1 Simplify rules for creating man pages
Simplify rules for creating docbook XML used to create manpages:
Updating the output using move-if-change and then unconditionally
touching the .stamp file doesn't make much sense.
2022-05-04 17:05:24 -04:00
Dimitar Dimitrov 5cad308baa Fix ndbm.c build break
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>
2022-05-04 13:08:10 -04:00
Dimitar Dimitrov 90a4ab5eb1 Fix nano-malloc build
The nano malloc build broke with:
  Commit 357d7fcc6
  In <stdio.h> provide only necessary types

The above commit exposed a latent missing-header bug:
  newlib/libc/stdlib/nano-mallocr.c:220:33: error: ‘uintptr_t’ undeclared (first use in this function)

Fix by including <stdint.h>.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
2022-05-04 12:49:55 -04:00
Sebastian Huber ad51d0006a Remove _global_impure_ptr indirection
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.
2022-05-04 17:31:04 +02:00
Sebastian Huber 357d7fcc6a In <stdio.h> provide only necessary types 2022-05-04 15:08:53 +02:00
Corinna Vinschen a404165959 Revert "sys/types.h: Don't include sys/_stdint.h"
This reverts commit 4232d171a6.
2022-05-04 15:08:44 +02:00
Corinna Vinschen 4232d171a6 sys/types.h: Don't include sys/_stdint.h
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>
2022-05-03 18:58:18 +02:00
Andrea Corallo 27f0913c17 Aarch32/64: Support __FLT_EVAL_METHOD__ values other than 0, 1, 2
2022-03-30  Andrea Corallo  <andrea.corallo@arm.com>

	* libc/include/machine/ieeefp.h (__FLOAT_TYPE, __DOUBLE_TYPE): New
	macros.
	* libc/include/math.h: Uses __DOUBLE_TYPE __FLOAT_TYPE to define
	double_t float_t if possible.
2022-04-11 12:00:16 -04:00
Jeff Johnston db1fbbc495 Add tests for tzset POSIX timezone string compliance
- patch from jdbouleu <hi@jdoubleu.de>

  - create time.exp and tzset.c files in newlib/testsuite/newlib.time
2022-04-08 17:19:16 -04:00
Jeff Johnston 539ac66ffa Add angle TZ angle bracket support to tzset_r
- from Brian Inglis <Brian.Inglis@systematicsw.ab.ca>

  - add support to _tzset_unlocked_r() to support quoting std and dst
    names with angle brackets <> as per Posix
  - modify documentation of tzset.c
2022-04-08 15:10:50 -04:00
jdoubleu 2c157e7e23 fix testsuite cannot compile tests
DEJAGNU could not find the function 'newlib_target_compile', because it was defined in another file.
2022-04-07 11:27:40 -04:00
Sebastian Huber bd95aa4d33 newlib: Remove superfluous CHECK_STD_INIT() macro
This macro is unused or expands to nothing.
2022-04-01 18:17:59 +02:00
Matt Joyce aac414986f Remove unused _cleanup()
Removed the unused function _cleanup() from findfp.c.
2022-04-01 15:42:32 +02:00
Matt Joyce a160ee29e5 Fix bug introduced in previous patch (44b60f0c)
This fixes a bug introduced in a previous patch (Commit 44b60f0c:
Make __sdidinit unused). Removed intitialization of __cleanup from
__smakebuf_r(). All callers of __smakebuf_r() call __sinit()
through the_CHECK_INIT macro, thus __cleanup is already
initialized. This fix also allows _cleanup_r() to be made static.
Changed its name to cleanup_stdio() and removed its declaration
from local.h.
2022-04-01 15:42:32 +02:00
Sebastian Huber 3c722c8022 newlib: Rename __sfmoreglue() and make it static
Rename __sfmoreglue() in sfmoreglue() and make it static.  This function is
only used by __sfp() in the same translation unit.

Remove use of register keyword.
2022-03-31 07:54:04 +02:00
Sebastian Huber 7a5903078d Replace _fwalk() calls with _fwalk_reent()
Remove the _fwalk() implementation to avoid duplicated code with
_fwalk_reent().
2022-03-31 07:54:04 +02:00
Jeff Johnston 0239bc706a Commit patch from Tobias Burnus <tobias@codesourcery.com>
[PATCH] newlib: Only call _fputwc_r if ELIX_LEVEL >= 4

(nano-)vfprintf.c is enabled for ELIX_LEVEL >= 1. When _WIDE_ORIENT
is set, its __sprint_r / __sfputs_r functions unconditionally called
_fputwc_r which is only in ELEX_LEVEL >= 4. With this commit,
the _WIDE support in (nano-)vfprintf.c is disabled for ELEX_LEVEL < 4.
2022-03-30 15:58:06 -04:00
Mike Frysinger be9c0561e7 newlib: drop phoenix support
This code has not been updated since 2016, and it looks like it has
rotted quite a bit since.  It does not build against the current set
of phoenix sources -- I had to hack both the kernel headers and the
newlib headers up to get it to build, and I still have no idea if it
actually links or runs.  It seems like the project itself has moved
away from newlib and to its own C library:
https://phoenix-rtos.com/documentation/libc/README.md

So since there's no interest from the phoenix folks to maintain this,
and it has a significant amount of non-standard code that we try to
keep up-to-date (without actually testing it), just punt it all.
2022-03-28 23:17:06 -04:00
Andrew Stubbs 761ef3b434 amdgcn: Fix build failure
The recent makefile reorganization broke the amdgcn port by creating
duplicate __malloc_lock symbols.  This patch fixes the problem by renaming
the malloc_support.c file to mlock.c, thus overriding the default symbol
properly.  Actually, I'm not sure how this ever worked?
2022-03-22 21:45:16 -04:00
Sebastian Huber 64b208103d iconv: Fix EL/IX level 2 handling
Consistently use

	if !ELIX_LEVEL_1

to enable EL/IX level 2 interfaces.
2022-03-21 11:32:59 +01:00
Jeff Law 0c8679e080 Avoid using common symbols in v850 libgloss
I've had this lying around for probably a year or two at this point.
It just changes all the instance of "errno" from a common symbol to an
extern.  I can't offhand recall where the actual definition is, but it
certainly exists in the generic code.
2022-03-19 20:01:33 -04:00
Mike Frysinger d88cbd0e7c newlib: enable automatic dependency generation
This was disabled as part of the migration away from the cygnus option
as that implied no-dependencies.

We currently have 1-to-1 updates enabled -- if you touch a .c file,
the corresponding .o file will be rebuilt.  But if you touch a header
file, none of the files using that get rebuilt.
2022-03-17 20:38:17 -04:00
Mike Frysinger fb42151a18 newlib: libm: integrate tests subdir
Integrate the old libm/test/ subdir into the main build.  It hasn't
been used in a long time causing the code to rot a bit.  I've fixed
some of those, but it still fails for many ports, so it's disabled
by default.  People who want to take a closer look can run:
$ make libm/test/test
2022-03-16 22:01:19 -04:00
Mike Frysinger 958833a0d3 newlib: integrate iconv update to maintainer build
To help prevent people from missing running this script, integrate it
into the build via maintainer mode.

Also fix the inverted exit status to make this work correctly -- for
some reason, it exited 1 when it worked, and 0 when it failed.
2022-03-16 21:59:57 -04:00
Mike Frysinger f2471da7db newlib: update build system generation documentation
Replace all of the individual autotool steps with a single autoreconf.
This simplifies the documentation greatly, and in the current system,
only takes ~10 seconds to regenerate everything.

Update the developer documentation to cover all the major components
of the current build system.  Hopefully this is a fairly complete road
map to everything.  I tried to include everything that I wish I knew
when I started hacking on this :P.
2022-03-16 21:59:09 -04:00
Mike Frysinger 96bc16f6b2 newlib: libc: merge build up a directory
Convert all the libc/ subdir makes into the top-level Makefile.  This
allows us to build all of libc from the top Makefile without using any
recursive make calls.  This is faster and avoids the funky lib.a logic
where we unpack subdir archives to repack into a single libc.a.  The
machine override logic is maintained though by way of Makefile include
ordering, and source file accumulation in libc_a_SOURCES.

There's a few dummy.c files that are no longer necessary since we aren't
doing the lib.a accumulating, so punt them.

The winsup code has been pulling the internal newlib ssp library out,
but that doesn't exist anymore, so change that to pull the objects.
2022-03-16 21:18:25 -04:00
Mike Frysinger b2d4dc167c newlib: xstormy16: move malloc multiplex logic from build to source files
Rather than define per-object rules in the Makefile, have small files
that define & include the right content.  This simplifies the build
rules, and makes understanding the source a little easier (imo) as it
makes all the subdirs behave the same: you have 1 source file and it
produces 1 object.  It's also about the same amount of boiler plate,
without having to define custom build rules that can fall out of sync.

We also realign the free & pvalloc definitions: common code puts these
in malloc.o & valloc.o respectively, not in free.o & pvalloc.o objects.

This will also be important as we merge the libc.a build into the top
dir since it relies on a single flat list of objects for overrides.
2022-03-13 17:12:03 -04:00
Mike Frysinger 8c383e9ae7 newlib: xstormy16: break up mallocr stubs
Move the multiplex logic out of the build and into source files to
make the build rules a lot simpler.
2022-03-13 17:12:03 -04:00
Mike Frysinger 5cd957ff66 newlib: xstormy16: fix mallopt definition & mstats handling
The mallopt symbol is defined in tiny-malloc.c, not mallocr.c, but
the Makefile in here tries to compile it out of the latter.  This
leads to mallopt never being defined.

The build also creates mallinfo.o & mallopt.o & mallstats.o objects
to override common ones, but the common dir doesn't use these names.
Instead, it places these all in mstats.o.

So move the build define logic to a dedicated file and compile it
directly to make things a bit simpler while fixing the missing func
and aligning objects with the cmomon code.
2022-03-13 17:12:03 -04:00
Mike Frysinger 4ad6b4d4df newlib: libc: move stdlib multiplex logic from build to source files
Rather than define per-object rules in the Makefile, have small files
that define & include the right content.  This simplifies the build
rules, and makes understanding the source a little easier (imo) as it
makes all the subdirs behave the same: you have 1 source file and it
produces 1 object.  It's also about the same amount of boiler plate,
without having to define custom build rules that can fall out of sync.

This will also be important as we merge the libc.a build into the top
dir since it relies on a single flat list of objects for overrides.

Also take the opportunity to clean up the unnecessary header deps in
here.  Automake provides dependency generation for free now.
2022-03-09 16:58:46 -05:00
Sebastian Huber 332df71d34 build: Avoid length() awk function
Some awk implementations such as old versions of mawk do not support the
length() function.  Use the return value of the POSIX split() function instead.
2022-03-09 12:04:11 +01:00
Mike Frysinger b1b44f777c newlib: rename mallocr.c to _mallocr.c
This file is a little confusing: it provides all of the mallocr logic,
but is compiled multiple times to produce a unique symbol each time.
For example, building mallocr.c with -DDEFINE_FREER produces freer.o
that only defines _free_r().  This is fine for most symbols, but it's
a little confusing when defining mallocr itself -- we produce a file
with the same symbol name, but we still need -DDEFINE_MALLOCR.  In
order to move the logic from the build rules to source files, using
mallocr.c both as a multiplexer and for defining a single symbol is a
bit tricky.  It's possible (if we add a lot of redundant preprocessor
checks to mallocr.c, or we add complicated build flags just for this
one files), but it's easier if we simply rename this to a dedicated
file.  So let's do that.

We do this as a dedicated commit because the next one will create a
new mallocr.c file and git's automatic diff algorithms can handle
trivial renames, but it can't handle renames+creates in the same
commit.
2022-03-09 04:12:46 -05:00
Mike Frysinger d7b16b0576 newlib: move nano-malloc logic from build to source files
Simplify the build system logic a bit by moving the mallocr.c ->
nano-mallocr.c redirection from the Makefile to the source files.
This allows for consistent object name usage regardless of the
configuration options used in case a machine dir wants to define
its own override.
2022-03-09 04:12:45 -05:00
Jeff Johnston 5fca4e0f18 Fix Bug libc/28945
- apply fix from Tom de Vries <vries@gcc.gnu.org>
  to have calloc zero out storage for nvptx calloc function
2022-03-07 15:35:02 -05:00
Mike Frysinger dea52d5c1e newlib: convert INTERNAL_NEWLIB to _LIBC
Since we already set up _LIBC to indicate source files are building
for newlib, we don't need this malloc-specific symbol.  Convert it
over to simplify the build a bit.
2022-03-01 20:30:32 -05:00
Mike Frysinger e15b2e8691 newlib: drop redundant AM_MAINTAINER_MODE call
This is already called earlier in this file, so no need to do it again.
2022-03-01 20:30:05 -05:00
Mike Frysinger 644e8bba07 newlib: xstormy16: add missing string.h include
Some of these functions are using memcpy & memset from string.h but
not including the header leading to implicit declaration warnings.
2022-03-01 01:14:33 -05:00
Mike Frysinger a531ad9726 newlib: speed up targ-include setup & add error checking
The current targ-include setup runs `cp` every header file it installs,
in serial.  This can be a little noticeable on systems, so cleanup the
logic to rely on cp's ability to copy multiple files to a directory in
a single call.

We still need a check for empty directories with no headers (i.e. the
glob doesn't match anything), so add a helper variable to contain that
logic to reduce the boiler plate a little.
2022-02-28 19:07:22 -05:00
Mike Frysinger 28724b2f62 newlib: libc: move stdio multiplex logic from build to source files
Rather than define per-object rules in the Makefile, have small files
that define & include the right content.  This simplifies the build
rules, and makes understanding the source a little easier (imo) as it
makes all the subdirs behave the same: you have 1 source file and it
produces 1 object.  It's also about the same amount of boiler plate,
without having to define custom build rules that can fall out of sync.
Some of these rules were already unnecessary as they were compiling a
single source file into the same named object w/out custom flags, and
Automake handles that for us completely.

This will also be important as we merge the libc.a build into the top
dir since it relies on a single flat list of objects for overrides.

Also take the opportunity to clean up the unnecessary header deps in
here.  Automake provides dependency generation for free now.
2022-02-28 19:04:11 -05:00
Mike Frysinger ec5ea6efae newlib: simplify header setup rules
Since POSIX cp requires copying a file to a directory without having
to specify the name explicitly, rely on that to avoid calling basename
on every source file.

We can also drop the stub `true` call if the -f test failed.  The use
of `if` already takes care of that in POSIX shell.
2022-02-28 19:03:57 -05:00
Mike Frysinger 8343db918f newlib: libc: move configure into top-level
This kills off the last configure script under libc/ and folds it
into the top newlib configure script.  The a lot of the logic was
already in the top configure script, so move what's left into a
libc/acinclude.m4 file.
2022-02-25 13:52:48 -05:00
Mike Frysinger 85f2dca52d newlib: add silent rules support to top-level rules 2022-02-24 19:14:12 -05:00
Mike Frysinger acf642177b newlib: fix multilib libg.a parallel builds
I split libg.a out into a sep target from libc.a for the main dir in
commit f2b053f49e ("newlib: separate out
libg from libc"), but missed the multilib dirs.  That leads to an
uncommon parallel build failure:
- libc.a rule runs & finishes
- $(BUILD_MULTISUBDIR)/libc.a rule runs
  -> failure due to libg.a not yet existing
- libg.a rule runs & finishes

Split the multilib libg rule out from libc too so it can depend on the
main libg directly and avoid this race.
2022-02-23 22:01:05 -05:00
Mike Frysinger 5ad394510b newlib: libm: workaround ar duplicate member behavior
GNU ar has undocumented behavior where it doesn't dedupe its inputs if
they're all on the same command line, so we have to dedupe ourselves.
2022-02-23 20:07:10 -05:00
Matt Joyce 44b60f0c4b Make __sdidinit unused
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.
2022-02-22 12:38:46 +01:00
Mike Frysinger 416792d59a newlib: libc: delete crt0.o duplication
The crt0.o was handled in a subdir-by-subdir basis: it would be compiled
in one (e.g. libc/sys/$arch/), then copied up one level (libc/sys/), then
copied up another (libc/) before finally being copied & installed in the
top newlib dir.  The libc/sys/ copy was cleaned up, and then the top dir
was changed to copy it directly out of the libc/sys/$arch/ dir.  But the
libc/sys/ copy to libc/ was left behind.  Clean that up now too.
2022-02-18 21:25:32 -05:00
Mike Frysinger 56c65fb8d9 newlib: posix: use local includes for local headers
These headers aren't installed, so use "" includes instead of <> so
we don't search system header paths.  This matches the style used
elsewhere in the tree for these local headers, and makes it work
w/out explicit -I flags (as needed with non-recursive make).
2022-02-18 18:40:57 -05:00
Mike Frysinger ac9f8c46b1 newlib: libm: merge build up a directory
Convert all the libm/ subdir makes into the top-level Makefile.  This
allows us to build all of libm from the top Makefile without using any
recursive make calls.  This is faster and avoids the funky lib.a logic
where we unpack subdir archives to repack into a single libm.a.  The
machine override logic is maintained though by way of Makefile include
ordering, and source file accumulation in libm_a_SOURCES.

One thing to note is that this will require GNU Make because of:
	libm_a_CFLAGS = ... $(libm_a_CFLAGS_$(subst /,_,$(@D)))
This was the only way I could find to supporting per-dir compiler
settings, and I couldn't find a POSIX compatible way of transforming
the variable content.  I don't think this is a big deal as other
Makefiles in the tree are using GNU Make-specific syntax, but I call
this out as it's the only one so far in the new automake code that
I've been writing.

Automake doesn't provide precise control over the output object names
(by design).  This is fine by default as we get consistent names in all
the subdirs: libm_a-<source>.o.  But this relies on using the same set
of compiler flags for all objects.  We currently compile libm/common/
with different optimizations than the rest.

If we want to compile objects differently, we can create an intermediate
archive with the subset of objects with unique flags, and then add those
objects to the main archive.  But Automake will use a different prefix
for the objects, and thus we can't rely on ordering to override.

But if we leverage $@, we can turn Automake's CFLAGS into a multiplex
on a per-dir (and even per-file if we wanted) basis.  Unfortunately,
since $@ contains /, Automake complains it's an invalid name.  While
GNU Make supports this, it's a POSIX extension, so Automake flags it.
Using $(subst) avoids the Automake warning to get a POSIX compliant
name, albeit with a GNU Make extension.
2022-02-17 20:56:32 -05:00
Mike Frysinger f2b053f49e newlib: separate out libg from libc
Make this a separate target from libc so that we can migrate libc over
to automake more easily.  Having it integrated into the libc target is
difficult to handle when using automake rules which expect a one-to-one
mapping between names & inputs.
2022-02-17 20:54:21 -05:00
Mike Frysinger c75bb30fc1 newlib: libc: reshuffle include order for the manual
When migrating the manual to the top-level, the include order was
sorted by name of the subdir.  But this changed the chapter order
of the manual in the process.  Change the sorting back to match
existing chapters and update the comments to explain.
2022-02-17 20:43:51 -05:00
Mike Frysinger 48942fe31a newlib: powerpc: switch to Automake conditionals
Using xxx_LIBADD, xxx_DEPENDENCIES, and EXTRA_xxx_SOURCES is one way of
conditionally including files into a target.  But it's meant more for the
cases where the variables added to LIBADD & DEPENDENCIES are constructed
via substitution (e.g. AC_SUBST) or other dynamic methods.  With Automake
conditionals, then the much simpler form is to conditionally append to
the xxx_SOURCES variable and let Automake sort everything out.
2022-02-17 20:43:51 -05:00
Mike Frysinger bf9f6a0984 newlib: use https:// URIs in more places 2022-02-17 00:48:58 -05:00
Mike Frysinger beadbdfc04 newlib: fix mips fenv.o handling
Commit 8fa73a9f84 changed how fenv.c is
compiled wrt mips16 targets used the wrong variable to add fenv.o to
libm.a.  Fix that thinko so it's included in the build again.
2022-02-16 20:40:53 -05:00
Mike Frysinger 2a83e65fc2 newlib: rtems: drop redundant header install
The top-level newlib dir already takes care of recursing into the
sys/xxx/include/ subdirs and installing any headers found, so the
rtems subdir doesn't need to do this itself.
2022-02-16 20:03:57 -05:00
Mike Frysinger 01ed65ed09 newlib: add missing mkdir to header install
Make sure these subdirs exist before trying to install headers into them.
2022-02-16 20:03:07 -05:00
Mike Frysinger 40748cd73a newlib: powerpc: simplify reallocr & callocr build logic
Replace the custom build rules (which require copying & pasting from the
current Makefile) with small stub files.  This allows us to drop the rules
entirely and let Automake provide everything.
2022-02-16 20:00:27 -05:00
Mike Frysinger d1591ed4a1 newlib: i386/xstormy16: drop unused -I libm/common flag
These subdirs don't actually use anything from libm.  The common dir
in particular only has 4 header files, and none are included here.

The xstormy16 code has a comment mentioning why this hack is here, but
it refers to code that was removed when its configure script was merged
up a level.
2022-02-16 19:58:13 -05:00
Mike Frysinger 907764ebec newlib/libgloss: drop unused $(CROSS_CFLAGS)
This is used in a bunch of places, but nowhere is it ever set, and
nowhere can I find any documentation, nor can I find any other project
using it.  So delete the flags to simplify.
2022-02-15 20:02:51 -05:00
Mike Frysinger df5808b771 newlib: drop support for decstation & sunos systems
These targets don't actually cross-compile -- they try to pull some
objects out of the host's /lib/libc.a, /lib/libm.a, and /lib/crt0.o
directly and merge them into newlib's own libraries.  This is hard
to keep working and impossible to test.  Considering the vintage of
such targets, and gcc dropping them many many years ago, drop them
from newlib too.  This will make cleaning up the build a lot easier.
2022-02-15 20:00:58 -05:00
Mike Frysinger b7f2965dc3 newlib: rename doc/local.mk to Makefile.inc
For consistency across the whole tree.
2022-02-15 19:59:53 -05:00
Mike Frysinger ac90a6590b newlib: phoenix: merge configure up to top-level
Merge sys/phoenix/ configure logic into libc/ itself.  This kills
off the last lingering script in this tree (other than libc itself).
2022-02-15 19:59:08 -05:00
Mike Frysinger 86432e55b4 newlib: phoenix: merge machine/ configure scripts up a level
The machine configure scripts are all effectively stub scripts that
pass the higher level options to its own makefile.
2022-02-15 19:59:08 -05:00
Mike Frysinger d470ef6463 newlib: phoenix: merge machine/ trampoline up a level
The machine/{configure,Makefile} files exist only to fan out to the
specific machine/$arch/ subdir.  We already have all that same info
in the phoenix/ dir itself, so by moving the recursive configure and
make calls into it, we can cut off this logic entirely and save the
overhead.
2022-02-15 19:59:08 -05:00
Mike Frysinger 16c12761fd newlib: phoenix: drop missing machine subdirs
These were never added to the tree, and as we transition from autoconf
to automake, it really wants the latter subdirs to always exist.  These
don't, so delete the logic.
2022-02-15 19:59:08 -05:00
Mike Frysinger 5a6bf1749f newlib: phoenix: move some logic from configure to the Makefile
These configure scripts hardcode some settings, so move them to the
Makefile to simplify so we can drop the configure scripts entirely.
2022-02-15 19:59:08 -05:00
Andoni Arregi ec69debcb9 Improve lgammaf range for very small cases
The original cut for small arguments at |x|<2**-70 (copied from the
double version) produces that when computing nadj we get a subnormal
number for t*x and thus, the division of pi/subnormal will be INF and
the logarithm of it too, which is wrong as a result for lgammaf in this
range.
The proposed new limit seems to be safe and has been tested to
produce accurate results.
(Courtesy of Andreas Jung, ESA)
2022-02-14 14:44:11 +01:00
Mike Frysinger bf167aade1 newlib: remove unused fenv flags
These look like they were just copied & pasted from common/Makefile.am.
The funcs in this dir are all stubs that don't actually call any math
or builtin functions, and a simple compile shows they produce identical
object code.  So delete to simplify the build rules.
2022-02-11 06:26:01 -05:00
Andoni Arregi 8f2bd6f046 Fix expf overflow limit
Correct the overflow limit in the variable o_threshold to be consistent
with the FLT_UWORD_LOG_MAX variable used by the internal implementation
of the expf algorithm itself.
The u_threshold variable has also been modified to be written in the
same format.

Note that this fix improves the situation but does not completely
correct the inconsistencies regarding the overflow and underflow limits
between the expf wrapper (wf_exp.c) and the expf algorithm itself
(ef_exp.c).

Currently these limits are different for the
_FLT_LARGEST_EXPONENT_IS_NORMAL and _FLT_NO_DENORMALS cases as well as
for the case where __OBSOLETE_MATH is not defined (only for the
underflow limit in this case).
2022-02-10 15:59:14 +01:00
Mike Frysinger 1aec525a44 newlib: delete unused autotool regen scripts
These don't work at all now that we've completely upgraded autotools.
2022-02-10 01:39:08 -05:00
Mike Frysinger e95c80b6d8 newlib: libm: fix rebase conflicts
I missed this cleanup when rebasing on top of the latest branch.
2022-02-10 00:36:34 -05:00
Mike Frysinger e114cbc6e1 newlib: libm: move configure into top-level
This kills off the last configure script under libm/ and folds it
into the top newlib configure script.  The vast majority of logic
was already in the top configure script, so move the little that
is left into a libm/acinclude.m4 file.
2022-02-10 00:28:05 -05:00
Mike Frysinger 5b9c4cf23e newlib: drop support for $oext
This was needed only to support libtool in case objects ended in .lo
instead of .o, but we dropped libtool, so drop this too.
2022-02-09 23:35:23 -05:00
Mike Frysinger f034d8ad19 newlib: drop support for $aext
This was needed only to support libtool in case the library ended in
.la instead of .a, but we dropped libtool, so drop this too.
2022-02-09 23:34:17 -05:00
Mike Frysinger 5c21b37214 newlib: fix mkdoc dependencies
Make sure we depend on the right name of mkdoc all the time, and that
the rules that need it (e.g. .def files) depend on it.

Reported-by: Jon Turney <jon.turney@dronecode.org.uk>
2022-02-09 23:26:19 -05:00
Mike Frysinger 006da84337 newlib: drop libtool support
This was only ever used for i?86-pc-linux-gnu targets, but that's been
broken for years, and has since been dropped.  So clean this up too.

This also deletes the funky objectlist logic since it only existed for
the libtool libraries.  Since it was the only thing left in the small
Makefile.shared file, we can punt that too.
2022-02-09 20:27:37 -05:00
Mike Frysinger 5a0ab4454b newlib: punt sys/linux support
This was only used by the i?86-pc-linux-gnu target which we've removed,
and even though it's using a "sys/linux/" dir to make it sound like it
only depends on the Linux kernel, it's actually tied to glibc APIs built
on top of Linux.  Since the code relies on internal glibc APIs and has
been broken for some time, punt it all.  If someone wants to bring it
back, they can try and actually keep the Linux-vs-glibc APIs separate.
2022-02-09 20:27:37 -05:00
Mike Frysinger e01b2bb014 newlib: drop unused iconvdata
This was only ever used for i?86-pc-linux-gnu targets, but that's been
broken for years, and has since been dropped.  So clean this up too.
2022-02-09 20:26:55 -05:00
Mike Frysinger 462d6942f6 newlib: drop i?86-pc-linux-* target support
This was added 20+ years ago.  It seems to have very few (or no users)
as it only works on 32-bit x86 GNU/Linux (i.e. glibc) systems, and even
then only with old versions of glibc.  It hasn't compiled in at least 5
years, but most likely been broken for more like 15 years -- it relies
on internal glibc APIs (like linuxthreads), and that code has changed
and been deleted significantly since.

This single target ends up dragging in a lot of non-trivial code that is
hard to keep working, and currently impossible to verify -- the libtool
and iconvdata and sys/linux/ code isn't used by anything else, but ends
up touching just about every build file in the tree.  Punt the target so
we can start stripping out all these unique code paths.

This commit by itself just disables the target.  We'll start deleting the
individual unused pieces in followups.
2022-02-09 20:23:12 -05:00
Mike Frysinger 401e68c664 newlib: switch to standard AC_PROG_RANLIB
This is basically a noop, but switch to the autoconf macro for finding
a suitable ranlib tool.
2022-02-08 22:18:06 -05:00
Mike Frysinger 985c8f3592 newlib: drop autoconf-2.13 hack
We require autoconf-2.69 now, so we don't need this old install hack.
2022-02-08 22:18:06 -05:00
Mike Frysinger b63a4bb49a newlib: drop cygnus EXEEXT hack
Now that we rely on AC_NO_EXECUTABLES to disable link tests, we don't
need this hack to disable exeext probing.
2022-02-08 22:18:05 -05:00
Mike Frysinger e7ad3f5aa8 newlib: switch to AM_PROG_AR
Now that we require automake-1.15, we can use this macro rather than
do the tool search ourselves.
2022-02-08 21:24:59 -05:00
Mike Frysinger 34af195290 newlib: switch to standard AM_PROG_AS
Now that we require a recent automake version, rely on it to provide AS
and CCAS and CCASFLAGS for us.
2022-02-08 20:19:18 -05:00
Mike Frysinger b9346cee1a newlib: switch to standard AC_PROG_CC
Now that we use AC_NO_EXECUTABLES, and we require a recent version of
autoconf, we don't need to define our own copies of these macros.  So
switch to the standard AC_PROG_CC.
2022-02-08 19:09:26 -05:00
Mike Frysinger 9b50254377 newlib: move AC_NO_EXECUTABLES logic up to common code
This logic was added to libc & libm to get it working again after some
reworks in the CPP handling, but now that that's settled, let's move
this to the common newlib configure logic.  This will make it easier
to consolidate all the configure calls into the top-level newlib dir.

This does create a lot of noise in the generate scripts, but that's
because of the ordering of the calls, not because of correctness. We
will try to draw that back down in follow up commits as we modernize
the toolchain calls in here.
2022-02-08 19:09:26 -05:00
Mike Frysinger 953ba1e6d1 newlib: simplify nds32 automake checks
This code is a bit more convoluted than it needs to be.  GPR_SOURCES
is never set to anything, and the automake checks use negative logic
to add the SP & DP source files to dedicated variables that are only
expanded once.  Get rid of the unused variable, use normal boolean
logic, and collapse the source settings into a single variable.
2022-02-08 19:06:15 -05:00
Mike Frysinger 8fff0aac0a newlib: drop unused xscale subdir
This target was deleted in 2011 in 25fa7e5ad6,
but this directory was missed.  Punt it too.
2022-02-08 19:05:14 -05:00
Mike Frysinger 24b1e4b942 newlib: drop shared documentation rules
Now that the top-level makefile handles these, don't need to copy
these into every single subdir.
2022-02-05 00:18:01 -05:00
Mike Frysinger 6026ef29d8 newlib: move man page generation into top-level build
This allows building the libc & libm pages in parallel, and drops
the duplication in the subdirs with the chew/chapter settings.

The unused rules in Makefile.shared are left in place to minimize
noise in the change.
2022-02-05 00:17:54 -05:00
Mike Frysinger fc2b4ffee0 newlib: libc: move manual into top-level build
This doesn't migrate all the docs, just the libc's manual (pdf/info).
This is to show the basic form of migrating the chew files.

For subdirs that didn't have any docs, I've stripped their settings
for clarity.  If someone wanted to suddenly add docs, they can add
the corresponding Makefile.inc files easily.
2022-02-04 23:57:12 -05:00
Mike Frysinger 44f6310bf9 newlib: libc: include all chapters all the time in the manual
THe stdio subdir is actually required by the documentation.  The
stdio/def is handled dynamically, but libc.texi always expects it
to be included, and fails if it isn't.  So making it required when
building docs is safe.

The xdr subdir is handled dynamically, but it doesn't include any
docs, so the dynamic logic isn't (currently) adding any value.  So
making it required when building docs is safe.

That leaves: iconv, stdio64, posix, and signal subdirs.  The chapters
have a little disclaimer saying they are system-dependent, but even
then, imo having stable manuals regardless of the target is preferable,
and we can add more disclaimer language to these chapters if we want.

This doesn't touch the man page codepaths, just the info/pdf.
2022-02-04 19:39:09 -05:00
Mike Frysinger 3365bd2f7a newlib: libm: move manual into top-level build
This doesn't migrate all the docs, just the libm's manual (pdf/info).
This is to show the basic form of migrating the chew files.
2022-02-04 19:39:05 -05:00
Mike Frysinger 4574c60378 newlib: arm & v850: simplify build rules
Let automake manage whether the objects are included in lib.a.  This
fixes failures after to commit 71086e8b2d
("newlib: delete (most) redundant lib_a_CCASFLAGS=$(AM_CCASFLAGS)") due
to automake generating different set of implicit rules, and the code in
here assuming the names of the generated objects.
2022-02-03 20:45:47 -05:00
Mike Frysinger d5ebf5277e newlib: rename libc_cv_ prefix to newlib_cv_
We've been using both libc_cv_ and newlib_cv_ for our cache vars.
Let's consolidate on newlib_cv_ to avoid conflicts with glibc which
is already using the libc_cv_ prefix.
2022-02-01 21:37:00 -05:00
Mike Frysinger 624e06b3cf newlib: drop unused cache vars from Makefiles
These aren't used in any of the makefiles, so there's no point in
exporting these.  These are only checked in the configure script.
2022-02-01 21:35:47 -05:00
Mike Frysinger 041dd7ff26 newlib: add AC_CACHE_CHECK sugar around preprocessor checks
This isn't strictly necessary, but it makes for much clearer logs as
to what the target is doing, and provides cache vars for anyone who
wants to force the test a different way, and it lets the build cache
its own results when rerunning config.status.
2022-02-01 18:15:51 -05:00
Mike Frysinger 38755463e5 newlib: delete unused iconvdata subdir config
Since commit dcbff9eea7 ("newlib: merge
iconvdata into top-level Makefile"), there is no configure script in
the iconvdata/ subdir, so this call will just issue a warning and not
do anything useful.  Punt it.
2022-02-01 18:13:53 -05:00
Mike Frysinger 4b0e66093c newlib: fix preprocessor checks
Restore the call to AC_NO_EXECUTABLES -- I naively assumed in commit
2e9aa5f56c ("newlib: update preprocessor
configure checks") that checking for a preprocessor would not involve
linking code.  Unfortunately, autoconf will implicitly check that the
compiler "works" before allowing it to be used, and that involves a
link test, and that fails because newlib provides the C library which
is needed to pass a link test.

There is some code in NEWLIB_CONFIGURE specifically to help mitigate
these, but it's not kicking in here for some reason, so let's just add
the AC_NO_EXECUTABLES call back until we can unwind that custom logic.

Additionally, we have to call AC_PROG_CPP explicitly.  This was being
invoked later on, but only in the use_libtool=yes codepath, and that
is almost never enabled.
2022-01-31 22:21:17 -05:00
Mike Frysinger 6a59fc444b newlib: fix cygwin -I path
This code snippet assumed it was only ever run in the top configure
script where srcdir would point to newlib/ which is parallel to the
winsup/ tree.  This is incorrect for all of the subdir configure
scripts leading to bad -I flags in $(CC).  Switch it over to the
new abs_newlib_basedir which should work in all subdirs.
2022-01-29 01:35:30 -05:00
Mike Frysinger fc0bd2eb03 newlib: use abs_newlib_basedir for -I paths
When we had configure scripts in subdirs, the newlib_basedir value
was computed relative to that, and it'd be the same when used in the
Makefile in the same dir.  With many subdir configure scripts removed,
the top-level configure & Makefile can't use the same relative path.
So switch the subdir Makefiles over to abs_newlib_basedir when they
use -I to find source headers.

Do this for all subdirs, even ones with configure scripts and where
newlib_basedir works.  This makes the code consistent, and avoids
surprises if the configure script is ever removed in the future as
part of merging to the higher level.

Some of the subdirs were using -I$(newlib_basedir)/../newlib/ for
some reason.  Collapse those too since newlib_basedir points to the
newlib source tree already.
2022-01-29 01:35:30 -05:00
Mike Frysinger 6444f108d9 newlib: export abs_newlib_basedir for all subdirs
When using the top-level configure script but subdir Makefiles, the
newlib_basedir value gets a bit out of sync: it's relative to where
configure lives, not where the Makefile lives.  Move the abs setting
from the top-level configure script into acinclude.m4 so we can rely
on it being available everywhere.  Although this commit doesn't use
it anywhere, just lays the groundwork.
2022-01-29 01:35:30 -05:00
Mike Frysinger 7a4bef590b newlib: hoist crt0 install up another dir
Commit dd23de27c8 ("newlib: libc: install
CRT0 straight out of subdir") got rid of the libc/sys/ intermediate for
copying the file up, but the top-level newlib/ dir was still expecting
a libc/crt0.o to exist so it could install.  Update that to also look
for the crt0 file directly under libc/ like we already do for crt1.
2022-01-28 07:27:19 -05:00
Mike Frysinger dcbff9eea7 newlib: merge iconvdata into top-level Makefile
Avoid a recursive make with this tiny subdir to speed things up a bit.
2022-01-27 19:14:57 -05:00
Mike Frysinger 996a85ba4c newlib: drop unused saber file
I can't find any references to this, and it looks like a generated
build log from a specific old sparc system.
2022-01-27 19:14:21 -05:00
Mike Frysinger 866de704f3 newlib: fix info+man page builds
The work to merge libc/machine/ up a dir lost the stub doc targets.
So when libc/ recursed into machine/, it would stop going deeper as
the doc rules were empty.  But now that libc/ goes directly into the
libc/machine/$arch/ and those have never had doc stubs, the build
fails.  Add a quick hack to the top dir to ignore all machine/$arch/
dirs when generating docs.  A follow up series will delete all of
this code as it merges all the doc rules into the top newlib dir.
2022-01-26 21:41:47 -05:00
Cyril Yared 73d515fcfe Fix null-pointer dereference in nano-malloc
If p is NULL, then the free_list is empty and we should return the
correct failure values.
2022-01-26 13:14:03 +01:00
Mike Frysinger ee3ed2b65e newlib: switch to multilib.am
We use the common config-ml.in for configure, so switch the makefile
over to the common multilib.am.  It's almost exactly the same code,
but there are two differences:
* Common code hooks install-exec-local for install-multi, but newlib
  doesn't currently install any executables, so that doesn't fire.
  Newlib already has install-data-local that inlined install-multi,
  so switch that to the common install-multi.
* Common code doesn't provide a check-multi at all.  Keep ours for
  now.  Some day common code might get it.  Or not.  Who knows.
2022-01-26 04:17:34 -05:00
Mike Frysinger 08a55a233d newlib: libc: merge machine/ configure scripts up a level
The machine configure scripts are all effectively stub scripts that
pass the higher level options to its own makefile.  There were only
three doing custom tests.  The rest were all effectively the same as
the libc/ configure script.

So instead of recursively running configure in all of these subdirs,
generate their makefiles from the top-level configure.  For the few
unique ones, deploy a pattern of including subdir logic via m4:
	m4_include([machine/nds32/acinclude.m4])

Some of the generated machine makefiles have a bunch of extra stuff
added to them, but that's because they were inconsistent in their
configure libtool calls.  The top-level has it, so it exports some
new vars to the ones that weren't already.
2022-01-26 03:11:21 -05:00
Mike Frysinger 8bee45444f newlib: libc: merge most sys/ configure scripts up a level
The sys configure scripts are almost all effectively stub scripts that
pass the higher level options to its own makefile.  The phoenix & linux
ones are a bit more complicated with nested subdirs, so those have been
left alone for now.  Plus, I don't really have a way of testing them.
2022-01-26 03:11:21 -05:00
Mike Frysinger dd23de27c8 newlib: libc: install CRT0 straight out of subdir
There's no need to have a sys/ subdir just to copy the sys/$arch/crt0.o
up to sys/crt0.o, and then have libc/ copy sys/crt0.o up again.  Just
have libc/ refer to sys/$arch/crt0.o directly and drop the intermediate
makefile entirely.
2022-01-26 03:11:21 -05:00
Mike Frysinger fbfeebc221 newlib: libc: merge sys/ trampoline up a level
The sys/{configure,Makefile} files exist to fan out to the specific
sys/$arch/ subdir, and to possibly generate a crt0.  We already have
all that same info in the libc/ dir itself, so by moving the recursive
configure and make calls into it, we can cut off some of this logic
entirely and save the overhead.

For arches that don't have a sys subdir, it means they can skip the
logic entirely.

The sys subdir itself is kept for the crt0 logic, for now.  We'll try
and clean that up next.
2022-01-26 03:11:20 -05:00
Mike Frysinger db2ef77287 newlib: libc: merge machine/ trampoline up a level
The machine/{configure,Makefile} files exist only to fan out to the
specific machine/$arch/ subdir.  We already have all that same info
in the libc/ dir itself, so by moving the recursive configure and
make calls into it, we can cut off this logic entirely and save the
overhead.

For arches that don't have a machine subdir, it means they can skip
the logic entirely.  Although there's prob not too many of those.
2022-01-26 03:11:20 -05:00
Mike Frysinger 2339979934 newlib: libm: merge machine/ configure scripts up a level
The machine configure scripts are all effectively stub scripts that
pass the higher level options to its own makefile.  The only one doing
any custom tests was nds32.  The rest were all effectively the same as
the libm/ configure script.

So instead of recursively running configure in all of these subdirs,
generate their makefiles from the top-level configure.  For nds32,
deploy a pattern of including subdir logic via m4:
	m4_include([machine/nds32/acinclude.m4])

Even its set of checks are very small -- it does 2 preprocessor tests
and sets up 2 makefile conditionals.

Some of the generated machine makefiles have a bunch of extra stuff
added to them, but that's because they were inconsistent in their
configure libtool calls.  The top-level has it, so it exports some
new vars to the ones that weren't already.
2022-01-26 03:11:20 -05:00
Mike Frysinger 6ac043b192 newlib: libm: merge machine/ trampoline up a level
The machine/{configure,Makefile} files exist only to fan out to the
specific machine/$arch/ subdir.  We already have all that same info
in the libm/ dir itself, so by moving the recursive configure and
make calls into it, we can cut off this logic entirely and save the
overhead.

For arches that don't have a machine subdir, it means they can skip
the logic entirely.
2022-01-26 03:11:20 -05:00
Mike Frysinger 5420733ef3 newlib: libm: drop unused config.h.in file
Not sure how this snuck in.  It's never been used in libm/, so punt it.
2022-01-25 21:56:47 -05:00
Mike Frysinger 5dc4e2089a newlib: powerpc: move libc machine list to Makefile
This makes the makefile logic a bit cleaner so we don't have two
files maintaining lists of sources & objects.  Since the logic is
tied to cpu capabilities, past those boolean settings down from
the configure logic to the makefile logic.

This will also make it easier to throw away the configure script
in a follow up commit and just keep the makefile.
2022-01-23 22:35:21 -05:00
Mike Frysinger 2e9aa5f56c newlib: update preprocessor configure checks
The nds32 & spu dirs are using compile tests to look for some
preprocessor defines, but we don't need to compile the code,
just preprocess it.  So switch to AC_PREPROC_IFELSE.

The sh dir is using a preprocessor test via grep, but let's
switch it to AC_PREPROC_IFELSE too to be consistent.

This should allow us to drop the uncommon AC_NO_EXECUTABLES call.
2022-01-23 22:35:21 -05:00
Mike Frysinger dcb25665be newlib: punt unused LIBC_EXTRA_LIB settings
This was added decades ago, but the commit message lacks any
explanation, and it was unused when it was merged.  It's still
unused today.  So punt it all.
2022-01-21 17:29:46 -05:00
Mike Frysinger 8776d090f8 newlib: stop making .def generation conditional
Generating these files is very cheap, so let's just do it all the time.
This makes the build logic simpler, and keeps errors for slipping in in
codepaths that are not well tested.  Creating these files doesn't mean
they'll be included in the manual implicitly.

For example, some of the nano stdio files break documentation because
they don't have any chew directives in them.  But no one noticed since
that code path is rarely enabled.  So drop the _i and _float def files.
2022-01-21 17:28:54 -05:00
Mike Frysinger 4af3551136 newlib: drop redundant CFLAGS export
This is already handled by autotools for us automatically.  You can
tell as the generated output is exactly the same other than deleting
a few blank lines.
2022-01-21 17:27:55 -05:00
Mike Frysinger f159663b08 newlib: stop clobbering LDFLAGS with non-standard $ldflags
It's unclear why this was added originally, but assuming it was needed
20 years ago, it shouldn't be explicitly required nowadays.  Current
versions of autotools already take care of exporting LDFLAGS to the
Makefile as needed (things are actually getting linked).  That's why
the configure diffs show LDFLAGS still here, but shifted to a diff
place in the output list.  A few dirs stop exporting LDFLAGS, but
that's because they don't do any linking, only compiling, so it's
correct.

As for the use of $ldflags instead of the standard $LDFLAGS, I can't
really explain that at all.  Just use the right name so users don't
have to dig into why their setting isn't respected, and then use a
non-standard name instead.  Adjust the testsuite to match.
2022-01-21 17:10:10 -05:00
Mike Frysinger 4317e0676a newlib: stop checking --enable-multilib in subdirs
None of the subdirs actually use the multilib arg, so include the
logic only in the top-level configure.
2022-01-21 17:10:10 -05:00
Mike Frysinger 17c2b857dc newlib: move to ../config/multi.m4 for multilib logic
The current newlib multilib logic is almost exactly the same as the
config/multi.m4, and the differences should be minor, so switch over
to that to delete custom logic on ourside.
2022-01-21 17:10:09 -05:00
Mike Frysinger 5cc72ac79d newlib: punt unused template file
This was needed by ancient versions of automake, but that hasn't been
the case since at least automake-1.5, so punt this unused stub.
2022-01-21 07:18:25 -05:00
Mike Frysinger 55e09d5e8c newlib: switch to autoconf long double macro
Now that we require a recent version of autoconf, we can rely on this
macro working.  This change was already made to libm, but these other
dirs were missed as I didn't notice it being duplicated in 3 places.
2022-01-21 07:07:15 -05:00
Mike Frysinger 0a67325726 newlib: switch newlib.h to autoheader
Now that newlib.hin has been brought up to date and all of its defines
are produced by configure, we can switch it to using autoheader without
manual editing.  This relies on a few pieces:
* Moving the header & footer into configure.ac via AH_TOP & AH_BOTTOM.
* Running a post-process step on newlib.h to delete all the defines we
  didn't export ourselves.  Basically, anything without a _ prefix.

This will leave behind some spurious comments in newlib.h related to
the defines we filtered out, but should be harmless, so it's probably
not worth the effort to construct a more complicated sed expression to
also strip those out.
2022-01-19 19:59:16 -05:00
Mike Frysinger b86dc2dab4 newlib: iconv: autogenerate iconv define list
The list of iconv to/from defines is hand maintained in newlib.hin.
Lets leverage mkdeps.pl to generate this list automatically from the
list of known encodings.  The newlib.hin list is up-to-date, so the
list in iconv.m4 matches the list already generated.
2022-01-19 19:59:16 -05:00
Mike Frysinger 15c091ad73 newlib: add missing _NANO_MALLOC to newlib.hin
This was added to configure, but never to the header file.  Nothing
uses this currently, so it's not a big deal (as all the dynamic logic
is via automake conditionals), but might as well restore it now to
keep autoheader output in sync.
2022-01-19 19:59:16 -05:00
Mike Frysinger 21fb1b461c newlib: move version defines out of the config headers
This will make it easier to move newlib.h to use autoheader directly.
We only want the newlib version defines in our hand curated version
file, _newlib_version.h, not in the template header, newlib.h, so
using AC_DEFINE doesn't make much sense.
2022-01-19 19:59:16 -05:00
Mike Frysinger 850e08fedb newlib: sort newlib.h output
Sort the symbols lexically like autoheader does.  There are no other
changes in here.  This will make it easier to sync with autoheader.
2022-01-19 19:59:16 -05:00
Mike Frysinger 810c5e5979 newlib: clean up autoheader templates
Sync these back from newlib.hin to configure.ac, and touchup some of
the forms to be consistent (like being full sentences).  Also use the
AC_DEFINE-vs-AC_DEFINE_UNQUOTED macros correctly.  This will make it
easier to re-enable autoheader for managing newlib.hin.
2022-01-19 19:59:16 -05:00
Mike Frysinger ff5be4ab83 newlib: merge acconfig.h changes into newlib.hin
The acconfig.h header was used to run autoheader and then manually
sync the output into newlib.hin.  Based on how the files have fallen
out of sync (with newlib.hin having many more templates), this has
not been run in a long time, and attempts to do so now would break
newlib.hin.

Further, if you try to run autoheader now, it will automatically
replace _newlib_version.hin since it's the first entry in the call
to AC_CONFIG_HEADERS.

So let's throw away acconfig.h entirely.  It only had 2 slightly
better comments, and the rest were either worse, missing, or stale.
This has the side benefit of avoiding autoheader warning about the
deprecated use of acconfig.h since newer autoconf only wants macro
calls in configure.ac.
2022-01-19 19:59:16 -05:00
Mike Frysinger 437c5c5085 newlib: internalize HAVE_INITFINI_ARRAY
This define is only used by newlib internally, so stop exporting it
as HAVE_INITFINI_ARRAY since this can conflict with defines packages
use themselves.

We don't really need to add _ to HAVE_INIT_FINI too since it isn't
exported in newlib.h, but might as well be consistent here.

We can't (easily) add this to newlib_cflags like HAVE_INIT_FINI is
because this is based on a compile-time test in the top configure,
not on plain shell code in configure.host.  We'd have to replicate
the test in every subdir in order to have it passed down.
2022-01-19 19:59:16 -05:00
Mike Frysinger 6783cceb0a newlib: libm: switch to autoconf long double macro
Now that we require a recent version of autoconf, we can rely on this
macro working.  We shift the call in configure.ac down a little to
help keep the generated diff minimal -- there should be no functional
difference otherwise.  This is because the autoconf macros will call
a bunch of standard toolchain macros first, and arguably the current
code is incorrect in how it does its testing.
2022-01-19 18:51:04 -05:00
Mike Frysinger 84ff8d9477 newlib: iconv: sort ccsbi.c contents
The current output doesn't happen to match what is produced on my
system, so force _iconv_ccs to be sorted like is already done in
the ccsbi.h header.
2022-01-18 19:34:31 -05:00
Mike Frysinger 7113ecbe79 newlib: iconv: sync mkdeps.pl with aliasesbi.c changes
Some changes were made to aliasesbi.c, but not to this file which
dynamically generates it.  Add those fixes to this file too.
2022-01-18 19:34:31 -05:00
Mike Frysinger ac3d869afb newlib: drop autoconf-2.59 workaround
As the file comments say, this was a backport of an autoconf-2.60 fix,
and shouldn't matter for >autoconf-2.59 versions.  Drop it since we use
and require autoconf-2.69 now.
2022-01-18 19:31:58 -05:00
Mike Frysinger a492b26065 newlib: enable automake subdir-objects in all dirs
Currently this is only enabled in the top-level as that's the only
place where it seemed to be used.  But the libc/sys/phoenix/ dir
also uses this functionality, but fails to explicitly enable it.
Automake workedaround it, but generated warnings.  Move the option
to NEWLIB_CONFIGURE so all dirs get it automatically iff they end
up using the option.  If they don't use the option, there's no
difference to the generated code.
2022-01-18 19:28:24 -05:00
Mike Frysinger 6746e06043 newlib: avoid duplicate awk checks
Since AM_INIT_AUTOMAKE calls AC_PROG_AWK, and some configure.ac
scripts call it too, we end up testing for awk multiple times.  If
we change NEWLIB_CONFIGURE to require the macro instead, then it
makes sure it's always expanded, but only once.

While we're here, do the same thing with AC_PROG_INSTALL since it
is also called by AM_INIT_AUTOMAKE, although it doesn't currently
result in duplicate configure checks.
2022-01-18 19:25:18 -05:00
Mike Frysinger 3722489f1f newlib: merge old AC_LIBTOOL_WIN32_DLL macro into LT_INIT
The AC_LIBTOOL_WIN32_DLL macro has been deprecated for a while and code
should call LT_INIT with win32-dll instead.  Update the calls to match.

The generated code is noisy not because of substantial differences, but
because the order of some macros change (i.e. instead of calling AS and
then CC, CC is called first and then AS).
2022-01-18 19:15:44 -05:00
Mike Frysinger fe591ba3f7 newlib: update libtool macro name
Replace old AM_PROG_LIBTOOL name with LT_INIT.  There's no change to
the generated files since they're aliases internally.
2022-01-18 19:15:44 -05:00
Mike Frysinger 71086e8b2d newlib: delete (most) redundant lib_a_CCASFLAGS=$(AM_CCASFLAGS)
Since automake already sets per-library CCASFLAGS to $(AM_CCASFLAGS)
by default, there's no need to explicitly set it here.

Many of these dirs don't have .S files in the first place, so the rule
doesn't even do anything.  That can easily be seen when Makefile.in has
no changes as a result.

For the dirs with .S files, the custom rules are the same as the pattern
.S.o rules, so this is a nice cleanup.

The only dir that was adding extra flags (newlib/libc/machine/mn10300/)
to the per-library setting can have it moved to the global AM_CCASFLAGS
since the subdir only has one target.  Although the setting just adds
extra debugging flags, so maybe it should be deleted in general.

There are a few dirs that we leave the redundant setting in place.  This
is to workaround an automake limitation in subdirs that support building
with & w/out libtool:
https://www.gnu.org/software/automake/manual/html_node/Objects-created-both-with-libtool-and-without.html
2022-01-18 19:12:02 -05:00
Mike Frysinger 20e3103471 newlib: update to automake-1.15
This matches what the other GNU toolchain projects have done already.
The generated diff in practice isn't terribly large.  This will allow
more use of subdir local.mk includes due to fixes & improvements that
came after the 1.11 release series.
2022-01-14 19:10:38 -05:00
Mike Frysinger a100e80fc9 require autoconf-2.69 exactly
The newlib & libgloss dirs are already generated using autoconf-2.69.
To avoid merging new code and/or accidental regeneration using diff
versions, leverage config/override.m4 to pin to 2.69 exactly.  This
matches what gcc/binutils/gdb are already doing.

The README file already says to use autoconf-2.69.

To accomplish this, it's just as simple as adding -I flags to the
top-level config/ dir when running aclocal.  This is because the
override.m4 file overrides AC_INIT to first require the specific
autoconf version before calling the real AC_INIT.
2022-01-14 15:24:33 -05:00
Nick Alcock 5ab7dd14e1 libtool.m4: fix nm BSD flag detection
Libtool needs to get BSD-format (or MS-format) output out of the system
nm, so that it can scan generated object files for symbol names for
-export-symbols-regex support.  Some nms need specific flags to turn on
BSD-formatted output, so libtool checks for this in its AC_PATH_NM.
Unfortunately the code to do this has a pair of interlocking flaws:

 - it runs the test by doing an nm of /dev/null.  Some platforms
   reasonably refuse to do an nm on a device file, but before now this
   has only been worked around by assuming that the error message has a
   specific textual form emitted by Tru64 nm, and that getting this
   error means this is Tru64 nm and that nm -B would work to produce
   BSD-format output, even though the test never actually got anything
   but an error message out of nm -B.  This is fixable by nm'ing *nm
   itself* (since we necessarily have a path to it).

 - the test is entirely skipped if NM is set in the environment, on the
   grounds that the user has overridden the test: but the user cannot
   reasonably be expected to know that libtool wants not only nm but
   also flags forcing BSD-format output.  Worse yet, one such "user" is
   the top-level Cygnus configure script, which neither tests for
   nor specifies any BSD-format flags.  So platforms needing BSD-format
   flags always fail to set them when run in a Cygnus tree, breaking
   -export-symbols-regex on such platforms.  Libtool also needs to
   augment $LD on some platforms, but this is done unconditionally,
   augmenting whatever the user specified: the nm check should do the
   same.

   One wrinkle: if the user has overridden $NM, a path might have been
   provided: so we use the user-specified path if there was one, and
   otherwise do the path search as usual.  (If the nm specified doesn't
   work, this might lead to a few extra pointless path searches -- but
   the test is going to fail anyway, so that's not a problem.)

(Tested with NM unset, and set to nm, /usr/bin/nm, my-nm where my-nm is a
symlink to /usr/bin/nm on the PATH, and /not-on-the-path/my-nm where
*that* is a symlink to /usr/bin/nm.)

ChangeLog
2021-09-27  Nick Alcock  <nick.alcock@oracle.com>

	PR libctf/27967
	* libtool.m4 (LT_PATH_NM): Try BSDization flags with a user-provided
	NM, if there is one.  Run nm on itself, not on /dev/null, to avoid
	errors from nms that refuse to work on non-regular files.  Remove
	other workarounds for this problem.  Strip out blank lines from the
	nm output.
2022-01-12 08:49:10 -05:00
Nick Alcock 4fe13b8d95 libtool.m4: augment symcode for Solaris 11
This reports common symbols like GNU nm, via a type code of 'C'.

ChangeLog
2021-09-27  Nick Alcock  <nick.alcock@oracle.com>

	PR libctf/27967
	* libtool.m4 (lt_cv_sys_global_symbol_pipe): Augment symcode for
	Solaris 11.
2022-01-12 08:47:00 -05:00
Alexander von Gluck IV 8a563bfdd7 Add support for the haiku operating system. These are the os support patches we have been grooming and maintaining for quite a few years over on git.haiku-os.org. All of these architectures are working and most have been stable for quite some time. 2022-01-12 08:43:25 -05:00
H.J. Lu 88d86e5970 GCC: Check if AR works with --plugin and rc
AR from older binutils doesn't work with --plugin and rc:

[hjl@gnu-cfl-2 bin]$ touch foo.c
[hjl@gnu-cfl-2 bin]$ ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c
[hjl@gnu-cfl-2 bin]$ ./ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c
./ar: no operation specified
[hjl@gnu-cfl-2 bin]$ ./ar --version
GNU ar (Linux/GNU Binutils) 2.29.51.0.1.20180112
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
[hjl@gnu-cfl-2 bin]$

Check if AR works with --plugin and rc before passing --plugin to AR and
RANLIB.

	PR ld/27173
	* configure: Regenerated.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Check if AR works with
	--plugin and rc before enabling --plugin.

config/

	PR ld/27173
	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): Check if AR works with
	--plugin and rc before enabling --plugin.

libiberty/

	PR ld/27173
	* configure: Regenerated.

zlib/

	PR ld/27173
	* configure: Regenerated.
2022-01-12 08:43:14 -05:00
H.J. Lu d8d5dac0fe GCC: Pass --plugin to AR and RANLIB
Detect GCC LTO plugin.  Pass --plugin to AR and RANLIB to support LTO
build.

	* Makefile.tpl (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	* configure.ac: Include config/gcc-plugin.m4.
	AC_SUBST AR_PLUGIN_OPTION and RANLIB_PLUGIN_OPTION.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Pass --plugin to AR and
	RANLIB if possible.
	* Makefile.in: Regenerated.
	* configure: Likewise.

config/

	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): New.

libiberty/

	* Makefile.in (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	(configure_deps): Depend on ../config/gcc-plugin.m4.
	* aclocal.m4: Include ../config/gcc-plugin.m4.
	* configure.ac: AC_SUBST AR_PLUGIN_OPTION and
	RANLIB_PLUGIN_OPTION.
	* configure: Regenerated.

zlib/

	* configure: Regenerated.
2022-01-12 08:43:05 -05:00
Samuel Thibault 4a3b4d50e3 libtool.m4: update GNU/Hurd test from upstream. In upstream libtool, 47a889a4ca20 ("Improve GNU/Hurd support.") fixed detection of shlibpath_overrides_runpath, thus avoiding unnecessary relink. This backports it.
.	* libtool.m4: Match gnu* along other GNU systems.

*/ChangeLog:

	* configure: Re-generate.
2022-01-12 07:19:46 -05:00
Mike Frysinger 8fc6b4b30e newlib: regen aclocal.m4 after autoconf update
The configure scripts were regenerated with 2.69 for the newlib-4.2.0
release in 484d2ebf8d, but the aclocal
files were not.  Do that now to avoid confusion between the two as to
which version of autoconf was used.
2022-01-12 07:01:18 -05:00
Corinna Vinschen 935c33877d posix_spawn: fix get/set uid/gid calls for 32 bit Cygwin
32 bit Cygwin still exports function calls to support old applications.
E. g., when switching from 16 to 32 bit uid/gid values, new function
like getuid32 have been added and the old getuid function still only
provides 16 bit values.  Newly built applications using getuid are
actually calling getuid32.

However, this link magic isn't performed inside Cygwin itself, so if
newlib functions call getuid, they actually call the old getuid, not
the new getuid32.  This leads to truncated uid/gid values.

https://cygwin.com/pipermail/cygwin/2022-January/250453.html reports
how this leads to problems in posix_spawn.

Fix this temporarily. i686 support will go away soon in Cygwin and the
fix can be dropped.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2022-01-12 11:57:35 +01:00
Sebastian Huber ebe756e466 powerpc/setjmp: Improve RTEMS support
For some RTEMS multilibs, the FPU and Altivec units are disabled during
interrupt handling.  Do not save and restore the corresponding registers in
this case.
2022-01-11 09:15:03 +01:00
Keith Thompson d4e61b73a9 Fix documented argv and envp params for posix_spawn 2022-01-10 09:57:05 +01:00
Mike Frysinger 54d77a0a56 newlib: use .texi with libc & libm manuals
Newer automake warns that .texinfo extensions are discouraged in favor
of .texi, so rename the manuals to match.
2022-01-07 15:54:10 -05:00
Jon Turney 87bfe673a3
newlib: README: libgloss no longer uses '--cygnus' automake option 2022-01-06 16:20:14 +00:00
Mike Frysinger 5a94ffd57a newlib: fix silent build in a few subdirs
A few subdirs have custom compile rules.  Utilize AM_V_xxx settings
so they respect the silent build option.
2022-01-05 20:38:25 -05:00
Mike Frysinger ed20821a40 newlib: migrate from INCLUDES to AM_CPPFLAGS
Since automake deprecated the INCLUDES name in favor of AM_CPPFLAGS,
change all existing users over.  The generated code is the same since
the two variables have been used in the same exact places by design.

There are other cleanups to be done, but lets focus on just renaming
here so we can upgrade to a newer automake version w/out triggering
new warnings.
2022-01-05 20:29:53 -05:00
Guilherme Janczak 8e71066cb2 update OpenBSD string functions
A lot of the 3rd party code in the string library is around 20 years
old and has been worked on since.
I've updated the OpenBSD functions at least.
2022-01-05 17:11:47 +01:00
Jeff Johnston 484d2ebf8d Update newlib to 4.2.0 2021-12-31 12:46:13 -05:00
Mike Frysinger 1162f09b6c newlib: require automake-1.11.6
This is simply reflecting reality: all the subdirs in here are already
using automake-1.11.6, so making it a requirement will allow us to stop
suggesting we might support automake-1.9 or 1.10 (which I'm fairly sure
do not work today).

This is why only acinclude.m4 changes in this patch: the generated files
are exactly the same as the directives here are automake constraints,
not generated code logic.
2021-12-31 12:08:18 -05:00
Jon Turney bfcabeb876
newlib: Regenerate autotools files 2021-12-29 22:45:06 +00:00
Jon Turney a4e734fcdb
newlib: Remove automake option 'cygnus'
The 'cygnus' option was removed from automake 1.13 in 2012, so the
presence of this option prevents that or a later version of automake
being used.

A check-list of the effects of '--cygnus' from the automake 1.12
documentation, and steps taken (where possible) to preserve those
effects (See also this thread [1] for discussion on that):

[1] https://lists.gnu.org/archive/html/bug-automake/2012-03/msg00048.html

1. The foreign strictness is implied.

Already present in AM_INIT_AUTOMAKE in newlib/acinclude.m4

2. The options no-installinfo, no-dependencies and no-dist are implied.

Already present in AM_INIT_AUTOMAKE in newlib/acinclude.m4

Future work: Remove no-dependencies and any explicit header dependencies,
and use automatic dependency tracking instead.  Are there explicit rules
which are now redundant to removing no-installinfo and no-dist?

3. The macro AM_MAINTAINER_MODE is required.

Already present in newlib/acinclude.m4

Note that maintainer-mode is still disabled by default.

4. Info files are always created in the build directory, and not in the
source directory.

This appears to be an error in the automake documentation describing
'--cygnus' [2]. newlib's info files are generated in the source
directory, and no special steps are needed to keep doing that.

[2] https://lists.gnu.org/archive/html/bug-automake/2012-04/msg00028.html

5. texinfo.tex is not required if a Texinfo source file is specified.
(The assumption is that the file will be supplied, but in a place that
automake cannot find.)

This effect is overriden by an explicit setting of the TEXINFO_TEX
variable (the directory part of which is fed into texi2X via the
TEXINPUTS environment variable).

6. Certain tools will be searched for in the build tree as well as in the
user's PATH. These tools are runtest, expect, makeinfo and texi2dvi.

For obscure automake reasons, this effect of '--cygnus' is not active
for makeinfo in newlib's configury.

However, there appears to be top-level configury which selects in-tree
runtest, expect and makeinfo, if present. So, if that works as it
appears, this effect is preserved. If not, this may cause problem if
anyone is building those tools in-tree.

This effect is not preserved for texi2dvi. This may cause problems if
anyone is building texinfo in-tree.

If needed, explicit checks for those tools looking in places relative to
$(top_srcdir)/../ as well as in PATH could be added.

7. The check target doesn't depend on all.

This effect is not preseved. The check target now depends on the all
target.

This concern seems somewhat academic given the current state of the
testsuite.

Also note that this doesn't touch libgloss.
2021-12-29 22:45:04 +00:00
Jon Turney 8e166351b3
newlib: Regenerate autotools files 2021-12-29 22:45:03 +00:00
Jon Turney 320510de2c
newlib: Make effects of 'cygnus' explicit
Add all the effects of 'cygnus' for which there exists an explicit way
to request that behaviour:

* Implied foreign strictness and options no-installinfo, no-dependencies
and no-dist are added to AM_INIT_AUTOMAKE in newlib/acinclude.m4.

* macro AM_MAINTAINER_MODE is added to newlib/acinclude.m4.

* For the implied TEXINFO_TEX of '$(top_srcdir)/../texinfo/texinfo.tex',
an explicit TEXINFO_TEX is always relative to $(srcdir), so write the
same pathname in that form.

This is to prepare for the removal of the automake option '--cygnus'.
2021-12-29 22:44:49 +00:00
Jon Turney ff71c3fcdb
README: configure.in -> configure.ac
These files were renamed from that long deprecated name in commit
92061799.
2021-12-13 18:47:11 +00:00
Jon Turney 639cb7ec1a
newlib: Regenerate all autotools files
Regenerate all aclocal.m4, configure and Makefile.in files.
2021-12-09 21:41:35 +00:00
Jon Turney 2b6f088ac3
newlib: Enable automake silent rules
Use AM_SILENT_RULES, to enable automake silent rules (by default), if we
are using a version of automake which supports it (>=1.11).

Silent rules can be disabled by configuring with '--disable-silent-rules',
or invoking 'make V=1'.

For ease of reviewing, this patch doesn't contain configure and
Makefile.in regeneration.

Future work: There are a few compilations which are not silenced by
this, as they use custom rules.
2021-12-09 21:41:05 +00:00
Takashi Yano a4705d387f ldtoa: Import gdtoa from OpenBSD.
- 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.
2021-12-03 19:20:17 +09:00
Takashi Yano 34876c05a5 frexpl: Support smaller long double of LDBL_MANT_DIG == 53.
- Currently, frexpl() supports only the following cases.
    1) LDBL_MANT_DIG == 64 or 113
    2) 'long double' is equivalent to 'double'
  This patch add support for LDBL_MANT_DIG == 53.
2021-12-03 19:14:03 +09:00
Corinna Vinschen dbc7d28ba9 Revert "ctype: use less short names in public header"
This patch fixed a problem which isn't in newlib, but in projects
incorrectly using symbols from the reserved namespace.

This reverts commit 3ba1bd0d9d.
2021-12-03 10:50:58 +01:00
Jeff Johnston 8fa73a9f84 Modifying patch from: marian.buschsieweke@ovgu.de
The code accessing the floating point control/status register, namely

	#define	__cfc1(__fcsr)	__asm __volatile("cfc1 %0, $31" : "=r" (__fcsr)

does not compile with mips16. This changed the makefile to pass -mno-mips16 to avoid the following
compiler error:

	mips-mti-elf fails with "Error: unrecognized opcode `cfc1 $3,$31'"
2021-11-30 11:23:39 -05:00
Takashi Yano 48f6c59332 stdio: Fix issue of printing "%La" format with large exp part.
- 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
2021-11-29 22:51:16 +09:00
Takashi Yano f885632f4f ldtoa: Fix insufficient valid output digits for "%f" format.
- If the number has large integer part and small fraction part is
  specified in output format, e.g. printf("%.3f", sqrt(2)*1e60);,
  valid output digits were insufficient. This patch fixes the issue.
2021-11-26 17:29:40 +09:00
Corinna Vinschen 68faeef4be ldtoa: don't restrict outbuf size to ndigits
https://cygwin.com/pipermail/cygwin/2021-November/249930.html
reported a regression introduce by using a dynamically sized local
char array in favor of a statically sized array.

Fix this by reverting to a statically sized array, using a small
buffer on the stack for a reasonable number of requested digits, a
big mallocated buffer otherwise.  This should work for small targets
as well, given that malloc is used in printf anyway right now.

This is *still* hopefully just a temporary measure, unless somebody
actually provides a new ldtoa.

Fixes: 4d90e53359 ("ldtoa: fix dropping too many digits from output")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-11-22 13:57:16 +01:00
Jon Turney ad68ec27c3
Fix 'make man' after 67208d9e
Remove a left over use of doc/Makefile after 67208d9e ('newlib: merge
doc into top-level Makefile') to fix 'make man'.
2021-11-16 17:59:56 +00:00
Thomas Wolff 076c856739 cleanup Unicode data files after generating updated tables 2021-11-16 11:24:29 +01:00
Thomas Wolff 3cef6dfb5e update to Unicode 14.0 2021-11-16 11:24:29 +01:00
Mike Frysinger 67208d9ef8 newlib: merge doc into top-level Makefile
Avoid a recursive make with this tiny subdir to speed things up a bit.
2021-11-15 19:35:04 -05:00
Mike Frysinger 6226bad0ea change _COMPILING_NEWLIB to _LIBC
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.
2021-11-15 19:32:23 -05:00
Mike Frysinger df5de02e0e newlib: ignore _FORTIFY_SOURCE when building newlib
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.
2021-11-13 00:09:21 -05:00
Mike Frysinger 372093689c define _COMPILING_NEWLIB for all targets when compiling
The _COMPILING_NEWLIB symbol is for declaring "the code is being
compiled for newlib itself" so headers can change behavior vs the
header being used by users (who should get the normal clean API).
Unfortunately, this symbol is defined inconsistently leading to it
only being useful for a few subsections of the tree.

Pull it out so that it's defined all the time for all targets.
2021-11-11 17:26:45 -05:00
Mike Frysinger 3ba1bd0d9d ctype: use less short names in public header
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.
2021-11-11 17:26:45 -05:00
Mike Frysinger 328e1b1a3d newlib: mips: delete glibc-specific logic
This code looks like it's written to be copied & pasted between diff
C libraries and relies on _LIBC only being used with glibc.  This will
break when newlib changes from _COMPILING_NEWLIB to _LIBC, so delete
the glibc-specific logic ahead of time.
2021-11-09 19:21:13 -05:00
Mike Frysinger 59e83de0b1 libgloss/newlib: update configure.ac in Makefile.in files
The maintainer rules refer to configure.in directly, so update that
after renaming all the configure.ac files.
2021-11-06 14:14:49 -04:00
Corinna Vinschen 4d90e53359 ldtoa: fix dropping too many digits from output
ldtoa cuts the number of digits it returns based on a computation of
number of supported bits (144) divide by log10(2).  Not only is the
integer approximation of log10(2) ~= 8/27 missing a digit here, it
also fails to take really small double and long double values into
account.

Allow for the full potential precision of long double values.  At the
same time, change the local string array allocation to request only as
much bytes as necessary to support the caller-requested number of
digits, to keep the stack size low on small targets.

In the long run a better fix would be to switch to gdtoa, as the BSD
variants, as well as Mingw64 do.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-11-04 13:14:17 +01:00
Christian Biesinger via Newlib 26894de91d Unconditionally declare strsignal
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.
2021-10-27 20:02:06 +02:00
Keith Packard c51f05c597 string: Fix buffer overrun in picolibc/newlib/libc/string/strrchr.c (#184)
Reported by prodisDown:

	In picolibc/newlib/libc/string/strrchr.c

	if (i) { while ((s=strchr(s, i))) { last = s; s++; } } else { last = strchr(s, i); }

	Value (for example 0xFFFFFF00) in if (i) can pass test and
	then be typecasted to char inside strchr(). Then s++ and then
	buffer overrun.

	It can be fixed by preventive typecast i = (int) (char) i; or
	typecasting inside expression if ((char) i).

Fixed by casting to char.

Signed-off-by: Keith Packard <keithp@keithp.com>
2021-10-13 16:39:49 -04:00
Sebastian Huber eb03ac17f1 sys/tree.h: Red child with black sibling rotations
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
2021-10-07 17:58:36 +02:00
Sebastian Huber 5f7f27c817 sys/tree.h: Add parent rotations
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.
2021-10-05 17:21:18 +02:00
Sebastian Huber ee30f991c3 sys/tree.h: Simplify chain of conditions
In RB_GENERATE_REMOVE_COLOR() simplify a chain of conditions of the following
pattern

if (x) {
  ...
} else if (!x) {
  ...
}

to

if (x) {
  ...
} else {
  ...
}
2021-10-05 16:09:50 +02:00
Sebastian Huber 098cf0f98d sys/tree.h: Simplify loop condition
We have

  #define RB_ISRED(elm, field) \
    ((elm) != NULL && RB_COLOR(elm, field) == RB_RED)

So, the RB_ISRED() contains an implicit check for NULL.  In
RB_GENERATE_REMOVE_COLOR() the "elm" pointer cannot be NULL in the while
condition.  Use RB_COLOR(elm) == RB_BLACK instead.
2021-10-05 16:09:11 +02:00
Mike Frysinger 6e64fccb5f newlib: sig2str: use __restrict
This matches the header prototype style and most of newlib, and fixes
building with older versions of gcc which only accept the __ form.
2021-09-15 10:08:20 -04:00
Corinna Vinschen 8c8d3b7a94 Regenerate Makefile.in after configure.in -> configure.ac change
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-09-13 17:25:46 +02:00
Mike Frysinger e8e0eb7398 Add myself to sim & general write-after-approval maintainers
There are a few files that are tied to the GNU simulator, so add myself
to match the general sim project.

Also add myself to the general write-after-approval since I've been doing
that for a long time now anyways :).
2021-09-13 10:14:37 -04:00
Mike Frysinger 920617998e libgloss/newlib: rename configure.in to configure.ac
The .in name has been deprecated for a long time in favor of .ac.
2021-09-13 10:14:37 -04:00
Torbjorn SVENSSON via Newlib 522cdab541 nano-malloc: Fix redefined compilation warning
When newlib is configured with --enable-newlib-reent-check-verify,
the assert macro is already defined in the nano-mallocr.c compile unit.

Contributed by STMicroelectronics

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@st.com>
2021-09-06 20:29:39 +02:00
Corinna Vinschen 76c2c7a891 ldexp/ldexpf: avoid assembler warning
libm/machine/i386/f_ldexp.S:30: Warning: no instruction mnemonic suffix given and no register operands; using default for `fild'
libm/machine/i386/f_ldexpf.S:30: Warning: no instruction mnemonic suffix given and no register operands; using default for `fild'

fix this by adding the l mnemonic suffix

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-09-03 12:52:47 +02:00
Corinna Vinschen c2fe205b50 strstr: avoid warnings
unused function warning for two_way_short_needle,
different char type warnings for standard string functions

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-09-03 12:51:30 +02:00
Corinna Vinschen 6a35ae33f5 nftw: fix thread cancellation support
_STDIO_WITH_THREAD_CANCELLATION_SUPPORT was never defined.
Include ../stdio/local.h to get the right definition per target.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-09-03 12:26:17 +02:00
Joel Sherrill dcb515a953 libc/include/sys/signal.h: Change __STDINT_EXP() to __SIZEOF_INT__
__STDINT_EXP() is provided by newlib but not by stdint-gcc.h. stdint-gcc.h
is used when the GCC argument -ffreestanding is used and this results in this
file not compiling.
2021-08-27 11:41:56 -05:00
Roger Sayle 6bb96d13a2 nvptx: Emulate clock and other machine stubs.
This patch to the libc/machine/nvptx port of newlib implements an
approximation of "clock" and provides some additional stub routines.
These changes not only reduce the number of (link) failures in the GCC
testsuite when targeting nvptx-none, but also allow the NIST scimark4
benchmark to compile and run without modification.

newlib already contains support for backends to provide their own
clock implementations via -DCLOCK_PROVIDED.  That functionality is
used here to return an approximate elapsed time based on the NVidia
GPU's clock64 cycle counter.  Although not great, this is better than
the current behaviour of link error from the unresolved symbol
_times_r.

The other part of the patch is to add a small number of stub functions
to nvptx's misc.c.  Adding isatty, for example, resolves linking
problems in libc from the dependency in __smakebuf_r, and the sync
stub, for example, fixes the failure with GCC's
testsuite/gfortran.dg/ISO_Fortran_binding_14.f90 [which simply tests
that gfortran can call a/any C function].

newlib/
        configure.host: Add -DCLOCK_PROVIDED to newlib_cflags on nvptx*.

newlib/libc/machine/nvptx
        Makefile.am: Add clock.c to lib_a_SOURCES.
        clock.c: New source file to implement/approximate clock().
        misc.c: Add stubs for fstat, isatty, open, sync and unlink.
2021-08-25 10:20:27 +02:00
Corinna Vinschen bc0e8a9961 stdlib: conditionalize locale usage
_strtod_l as well as the gethex function both fetch the decimal point
from the current LC_NUMERIC locale info.  This pulls in _C_numeric_locale
unconditionally even on targets not supporting locales at all.

Another problem is that strtod.c and gdtoa-gethex.c are ELIX 1, while
locale information in general isn't.  This leads to potential build
breakage on bare metal targets.

Fix this by setting the decimal point to "." on all targets not
defining __HAVE_LOCALE_INFO__.

While at it, const'ify the entire local decimal point info in the
affected functions.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-08-23 10:02:00 +02:00
Keith Packard cf86601d98 svfwscanf: Simplify _sungetwc_r to eliminate apparent buffer overflow
svfwscanf replaces getwc and ungetwc_r. The comments in the code talk
about avoiding file operations, but they also need to bypass the
mbtowc calls as svfwscanf operates on wchar_t, not multibyte data,
which is a more important reason here; they would not work correctly
otherwise.

The ungetwc replacement has code which uses the 3 byte FILE _ubuf
field, but if wchar_t is 32-bits, this field is not large enough to
hold even one wchar_t value. Building in this mode generates warnings
about array overflow:

	In file included from ../../newlib/libc/stdio/svfiwscanf.c:35:
	../../newlib/libc/stdio/vfwscanf.c: In function '_sungetwc_r.isra':
	../../newlib/libc/stdio/vfwscanf.c:316:12: warning: array subscript 4294967295 is above array bounds of 'unsigned char[3]' [-Warray-bounds]
	  316 |   fp->_p = &fp->_ubuf[sizeof (fp->_ubuf) - sizeof (wchar_t)];
	      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	In file included from ../../newlib/libc/stdio/stdio.h:46,
			 from ../../newlib/libc/stdio/vfwscanf.c:82,
			 from ../../newlib/libc/stdio/svfiwscanf.c:35:
	../../newlib/libc/include/sys/reent.h:216:17: note: while referencing '_ubuf'
	  216 |   unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
	      |                 ^~~~~

However, the vfwscanf code *never* ungets data before the start of the
scanning operation, and *always* ungets data which matches the input
at that point, so the code always hits the block which backs up over
the input data and never hits the block which uses the _ubuf field.

In addition, the svfwscanf code will always start with the unget
buffer empty, so the ungetwc replacement never needs to support an
unget buffer at all.

Simplify the code by removing support for everything other than
backing up over the input data, leaving the check to make sure it
doesn't get underflowed in case the vfscanf code has a bug in it.

Signed-off-by: Keith Packard <keithp@keithp.com>
2021-08-18 10:37:24 +02:00
Matt Joyce 4f81149937 libc: Added prototypes for new POSIX APIs
Added function prototypes to newlib/libc/include/pthread.h
for the following Issue 8 Standard APIs:
pthread_cond_clockwait()
pthread_mutex_clocklock()
pthread_rwlock_clockrdlock()
pthread_rwlock_clockwrlock()
2021-08-09 10:29:55 +02:00
Christoph Muellner 15c53a34bc libc: Fix compilation for new sig2str/str2sig implementation
A recent patch introduced new code for sig2str/str2sig.
This code does not properly exclude code that requires
SIGRTMIN/SIGRTMAX to be defined and triggers the following
compile error:

  newlib/libc/signal/sig2str.c:199:8: error: 'SIGRTMIN' undeclared
  newlib/libc/signal/sig2str.c:200:29: error: 'SIGRTMAX' undeclared

Let's add the missing guards.

Fixes: 2b50ec0cd2 ("libc: Fix compilation for new sig2str/str2sig implementation")

Signed-off-by: Christoph Muellner <cmuellner@gcc.gnu.org>
2021-08-02 16:42:03 +02:00
Matt Joyce 2b50ec0cd2 libc: Added implementation for sig2str/str2sig.
Added implementations for sig2str() and str2sig() in libc/signal
in order to improve POSIX compliance. Added fucntion prototypes
in libc/include/sys/signal.h.
2021-08-02 11:28:15 +02:00
Maxim Blinov 0542583129 Remove unneccesary parenthesis around declarator
riscv64-unknown-elf-g++-11.1.0 regression suite reports the following
failures for

$ make check-gcc-c++ RUNTESTFLAGS='dg.exp=Wstringop-overflow-6.C'

```
FAIL: g++.dg/warn/Wstringop-overflow-6.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/Wstringop-overflow-6.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/Wstringop-overflow-6.C  -std=gnu++2a (test for excess errors)
UNSUPPORTED: g++.dg/warn/Wstringop-overflow-6.C  -std=gnu++98
```

The "excess errors" being

```
output is In file included from /home/maxim/prj/riscv-upstream/install/riscv64-unknown-elf/include/wchar.h:6,
                 from /home/maxim/prj/riscv-upstream/build/gcc-stage2/riscv64-unknown-elf/libstdc++-v3/include/cwchar:44,
                 from /home/maxim/prj/riscv-upstream/build/gcc-stage2/riscv64-unknown-elf/libstdc++-v3/include/bits/postypes.h:40,
                 from /home/maxim/prj/riscv-upstream/build/gcc-stage2/riscv64-unknown-elf/libstdc++-v3/include/iosfwd:40,
                 from /home/maxim/prj/riscv-upstream/build/gcc-stage2/riscv64-unknown-elf/libstdc++-v3/include/ios:38,
                 from /home/maxim/prj/riscv-upstream/build/gcc-stage2/riscv64-unknown-elf/libstdc++-v3/include/ostream:38,
                 from /home/maxim/prj/riscv-upstream/build/gcc-stage2/riscv64-unknown-elf/libstdc++-v3/include/iostream:39,
                 from /home/maxim/prj/riscv-upstream/gcc-11.1.0/gcc/testsuite/g++.dg/warn/Wstringop-overflow-6.C:6:
/home/maxim/prj/riscv-upstream/install/riscv64-unknown-elf/include/sys/reent.h:685:11: warning: unnecessary parentheses in declaration of '_sig_func' [-Wparentheses]
```
2021-07-28 11:12:42 +02:00
Alex White 44a3966577 libc/include/sys/config.h: Undef _REENT_SMALL for RTEMS on MicroBlaze
RTEMS does not expect _REENT_SMALL.
2021-07-22 09:35:17 +02:00
Kito Cheng ca7b4bd236 libm: Fixing overflow handling issue for scalbnf and scalbn
cc Aldy Hernandez <aldyh@redhat.com> and Andrew MacLeod <amacleod@redhat.com>,
they are author of new VRP analysis for GCC, just to make sure I didn't
mis-understanding or mis-interpreting anything on GCC site.

GCC 11 have better value range analysis, that give GCC more confidence
to perform more aggressive optimization, but it cause scalbn/scalbnf get
wrong result.

Using scalbn to demostrate what happened on GCC 11, see comments with VRP
prefix:

```c
double scalbn (double x, int n)
{
	/* VRP RESULT: n = [-INF, +INF] */
        __int32_t  k,hx,lx;
        ...
        k = (hx&0x7ff00000)>>20;
	/* VRP RESULT: k = [0, 2047] */
        if (k==0) {
	    /* VRP RESULT: k = 0 */
	    ...
	    k = ((hx&0x7ff00000)>>20) - 54;
            if (n< -50000) return tiny*x;       /*underflow*/
	    /* VRP RESULT: k = -54 */
	}
	/* VRP RESULT: k = [-54, 2047] */
        if (k==0x7ff) return x+x;               /* NaN or Inf */
	/* VRP RESULT: k = [-54, 2046] */
        k = k+n;
        if (k > 0x7fe) return huge*copysign(huge,x); /* overflow  */
	/* VRP RESULT: k = [-INF, 2046] */
	/* VRP RESULT: n = [-INF, 2100],
	   because k + n <= 0x7fe is false, so:
	   1. -INF < [-54, 2046] + n <= 0x7fe(2046) < INF
	   2. -INF < [-54, 2046] + n <= 2046 < INF
	   3. -INF < n <= 2046 - [-54, 2046] < INF
	   4. -INF < n <= [0, 2100] < INF
	   5. n = [-INF, 2100] */
        if (k > 0)                              /* normal result */
            {SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x;}
        if (k <= -54) {
	    /* VRP OPT: Evaluate n > 50000 as true...*/
            if (n > 50000)      /* in case integer overflow in n+k */
                return huge*copysign(huge,x);   /*overflow*/
            else return tiny*copysign(tiny,x);  /*underflow*/
	}
        k += 54;                                /* subnormal result */
        SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20));
        return x*twom54;
}
```

However give the input n = INT32_MAX, k = k+n will overflow, and then we
expect got `huge*copysign(huge,x)`, but new VRP optimization think
`n > 50000` is never be true, so optimize that into `tiny*copysign(tiny,x)`.

so the solution here is to moving the overflow handle logic before `k = k + n`.
2021-07-21 09:56:04 +02:00