The dummy crt0.c provided by the RTEMS target provides stubs of
symbols which would normally be provided by RTEMS. This patch adds
stubs for posix_memalign() as well as the synchronization methods
prototyped in <sys/lock.h>.
Newlib defines defaults for internal types via <sys/_types.h> and uses
<machine/_types.h> to let targets define their own type if necessary.
Previously for example
#ifndef __dev_t_defined
typedef short __dev_t;
#endif
However, the __*_t_defined pattern conflicts with the glibc type guard
pattern for user types, e.g. dev_t in this example. Introduce a
__machine_*_t_defined pattern for internal types (defined by
<machine/_types.h>, used by <sys/_types.h>). For example
#ifndef __machine_dev_t_defined
typedef short __dev_t;
#endif
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This change solves a glibc/BSD compatibility problem.
glibc and BSD use double underscore types for internal types. The Linux
port of Newlib uses some glibc provided internal type definitions which
are not protected by guard defines, e.g. __off_t. To avoid a conflict
Newlib uses single underscore types for some internal types, e.g.
_off_t. However, for BSD compatibility we have to define the internal
types with double underscore names in <sys/_types.h>.
The header file <machine/types.h> is Newlib-specific. It was used
instead of <sys/_types.h> to provide the internal type definitions
_CLOCK_T, _TIME_T_, _CLOCKID_T_, _TIMER_T_, and __suseconds_t. Move
these definitions to <sys/_types.h> (there exist two instances of this
file, one for Linux and one for all other targets). This makes the
_HAVE_SYSTYPES configuration define obsolete (could possibly break the
__RDOS__ target). Use the standard <sys/_types.h> include throughout.
Move __loff_t defintion to default (non-Linux) <sys/_types.h>. Define
it via _off64_t to avoid a dependency on the compiler.
Provide the __off_t definition via default (non-Linux) <sys/_types.h>
based on _off_t for all systems except Cygwin. For Cygwin use _off64_t.
Define off_t via __off_t.
Provide the __pid_t definition via default (non-Linux) <sys/_types.h>.
This prevents a potential __pid_t and pid_t incompatibility. Add BSD
guard defines for pid_t.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Move the kernel dependent parts of <sys/time.h> to new system-specific
header file <machine/_time.h>. Provide an empty default implementation.
Add a specialized implementation for RTEMS.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This include is not present in default Newlib, glibc and FreeBSD
<sys/param.h>. With it there is now a conflict with <sys/libkern.h>
introduced by ecf453f963.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
commit bb01594897 moved the struct timeval
declaration from <sys/time.h> to <sys/_timeval.h>, and commit
01885f533d changed <sys/select.h> to include
<sys/_timeval.h>. Therefore, sparc64's own struct timeval needs to be
moved accordingly in order to avoid a conflict from the generic type.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Acked-by: Corinna Vinschen <vinschen@redhat.com>
sparc64 has a number of its own headers which override the generic ones.
These too need to use feature test macros properly.
These changes correspond to the generic fcntl.h and sys/stat.h changes
in commit d2df6d381b and
commit 069e400c91.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Acked-by: Corinna Vinschen <vinschen@redhat.com>
In file included from libc/sys/arm/crt0.S:2:0:
libc/sys/arm/arm.h:32:25: fatal error: acle-compat.h: No such file or directory
acle-compat.h is libc/machine/arm.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
According to the OpenBSD man page, "A Replacement Call for Random". It
offers high quality random numbers derived from input data obtained by
the OpenBSD specific getentropy() system call which is declared in
<unistd.h> and must be implemented for each Newlib port externally. The
arc4random() functions are used for example in LibreSSL and OpenSSH.
Cygwin provides currently its own implementation of the arc4random
family. Maybe it makes sense to use this getentropy() implementation:
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libcrypto/crypto/getentropy_win.c?rev=1.4&content-type=text/x-cvsweb-markup
* libc/include/stdlib.h (arc4random): Declare if __BSD_VISIBLE.
(arc4random_buf): Likewise.
(arc4random_uniform): Likewise.
* libc/include/sys/unistd.h (getentropy): Likewise.
* libc/include/machine/_arc4random.h: New file.
* libc/stdlib/arc4random.c: Likewise.
* libc/stdlib/arc4random.h: Likewise.
* libc/stdlib/arc4random_uniform.c: Likewise.
* libc/stdlib/chacha_private.h: Likewise.
* libc/sys/rtems/include/machine/_arc4random.h: Likewise.
* libc/stdlib/Makefile.am (EXTENDED_SOURCES): Add arc4random.c
and arc4random_uniform.c.
* libc/stdlib/Makefile.in: Regenerate.
Currently, the newlib version information needs to be updated in two places:
- newlib/acinclude.m4
- newlib/libc/include/sys/features.h
The goal of this patch is to:
- supply a single location for defining the newlib version
information: newlib/acinclude.m4
- define __NEWLIB__, __NEWLIB_MINOR__ and __NEWLIB_PATCHLEVEL__
This is in line with what gcc does for its version macros. See:
https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
This patch moves the definition of the _NEWLIB_VERSION, __NEWLIB__
and __NEWLIB_MINOR__ macros from newlib/libc/include/sys/features.h,
to the newly generated newlib/_newlib_version.h file. Additionally,
the __NEWLIB_PATCHLEVEL__ macro was created, for completeness.
In order to stay backwards compatible, newlib/_newlib_version.h gets
included by newlib/newlib.h and newlib/libc/include/sys/features.h.
Note: This patch does _not_ include the modifications to the following
files, as these should all be generated any way.
*Makefile.in,
*aclocal.m4,
*configure
stamp-* files
Signed-off-by: Pieter du Preez <pdupreez@gmail.com>
libgloss:
* arm/Makefile.in: Add newlib/libc/machine/arm to the include path if
newlib is present.
* arm/arm.h: Include acle-compat.h.
(THUMB_V7_V6M): Rename to ...
(PREFER_THUMB): This. Use ACLE macros __ARM_ARCH_ISA_ARM instead of
__ARM_ARCH_6M__ to decide whether to define it.
(THUMB1_ONLY): Define for Thumb-1 only targets.
(THUMB_V7M_V6M): Rename to ...
(THUMB_VXM): This. Defined based on __ARM_ARCH_ISA_ARM, excluding
ARMv7.
* arm/crt0.S: Use THUMB1_ONLY rather than __ARM_ARCH_6M__,
!__ARM_ARCH_ISA_ARM rather than THUMB_V7M_V6M for fp enabling, and
PREFER_THUMB rather than THUMB_V7_V6M. Rename other occurences of
THUMB_V7M_V6M to THUMB_VXM.
* arm/linux-crt0.c: Likewise.
* arm/redboot-crt0.S: Likewise.
* arm/swi.h: Likewise.
* arm/trap.S: Likewise.
newlib:
* libc/machine/arm/memcpy-stub.c: Use ACLE macros __ARM_ARCH_ISA_THUMB
and __ARM_ARCH_ISA_ARM to check for Thumb-2 only targets rather than
__ARM_ARCH and __ARM_ARCH_PROFILE.
* libc/machine/arm/memcpy.S: Likewise.
* libc/machine/arm/setjmp.S: Likewise for Thumb-1 only target and
include acle-compat.h.
* libc/machine/arm/strcmp.S: Likewise for Thumb-1 and Thumb-2 only
target and include acle-compat.h.
* libc/sys/arm/arm.h: Include acle-compat.h.
(THUMB_V7_V6M): Rename to ...
(PREFER_THUMB): This. Use ACLE macro __ARM_ARCH_ISA_ARM instead of
__ARM_ARCH_6M__ to decide whether to define it.
(THUMB1_ONLY): Define for Thumb-1 only targets.
(THUMB_V7M_V6M): Rename to ...
(THUMB_VXM): This. Defined based on __ARM_ARCH_ISA_ARM, excluding
ARMv7.
* libc/sys/arm/crt0.S: Use PREFER_THUMB rather than THUMB_V7_V6M and
rename THUMB_V7M_V6M into THUMB_VXM.
* libc/sys/arm/swi.h: Likewise.
- Move types and defines to
<machine/_threads.h> so that it can be customized per target.
* libc/include/threads.h: New.
* libc/sys/rtems/include/machine/_threads.h: Likewise.
On 31/07/15 10:34, Richard Earnshaw wrote:
> On 31/07/15 10:28, Andre Vieira wrote:
>> newlib/ChangeLog:
>> 2015-07-28 Andre Vieira <andre.simoesdiasvieira@arm.com>
>>
>> * libc/sys/arm/sys/param.h: Include machine/param.h
>> (HZ, NOFILE, PATHSIZE): Define.
>>
>> param_refactor_1.patch
>>
>>
>> From abc2d5f3398721f6ca891b9581feaba58730b19c Mon Sep 17 00:00:00 2001
>> From: Andre Simoes Dias Vieira <andsim01@arm.com>
>> Date: Tue, 28 Jul 2015 12:10:59 +0100
>> Subject: [PATCH 1/2] Moved param configuration to machine/param.h
>>
>> ---
>> newlib/libc/sys/arm/sys/param.h | 12 ++++++++++--
>> 1 file changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/newlib/libc/sys/arm/sys/param.h b/newlib/libc/sys/arm/sys/param.h
>> index adc066e9a8756e07edaaa8cadc79b5f05c996ac9..622c371972ab3c9dbb93ea5c51323a593e2a171a 100644
>> --- a/newlib/libc/sys/arm/sys/param.h
>> +++ b/newlib/libc/sys/arm/sys/param.h
>> @@ -3,9 +3,17 @@
>> #ifndef _SYS_PARAM_H
>> # define _SYS_PARAM_H
>>
>> -# define HZ (100)
>> -# define NOFILE (60)
>> +#include <machine/param.h>
>> +
>> +#ifndef HZ
>> +# define HZ (60)
>
> Why have you changed the value for HZ? It seems that, by convention,
> ARM boards have always used 100.
>
> R.
>
>> +#endif
>> +#ifndef NOFILE
>> +# define NOFILE>(60)
>> +#endif
>> +#ifndef PATHSIZE
>> # define PATHSIZE (1024)
>> +#endif
>>
>> #define BIG_ENDIAN 4321
>> #define LITTLE_ENDIAN 1234
>>
>
Hi Richard,
ARM's machine/param.h that is included in "#include <machine/param.h>",
before the 'ifndef' already defines HZ to be 100. This file was already
there, it was just not being used. I understand that this 'ifndef' might
be confusing, though I decided to add it to mimic the behavior of the
default sys/param.h.
There is however an unrelated issue with this patch, a typo in the
"#define NOFILE" that crept in there due to some copy pasting when
splitting the patch.
Here is a fixed version.
BR,
Andre
newlib/ChangeLog:
2015-07-28 Andre Vieira <andre.simoesdiasvieira@arm.com>
* libc/sys/arm/sys/param.h: Include machine/param.h
(HZ, NOFILE, PATHSIZE): Define.
From abc2d5f3398721f6ca891b9581feaba58730b19c Mon Sep 17 00:00:00 2001
From: Andre Simoes Dias Vieira <andsim01@arm.com>
Date: Tue, 28 Jul 2015 12:10:59 +0100
Subject: [PATCH 1/2] Moved param configuration to machine/param.h
Only on first call to the recursive malloc lock the restore value of
exception enable fields is stored.
* libc/sys/or1k/mlock.c: Fix exception enable saving
Sorry, there was a typo in <sys/lock.h> which leads to memory corruption
since not enough space is reserved for the lock object.
newlib/ChangeLog
2015-07-30 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/sys/rtems/include/sys/lock.h (__LOCK_INIT_RECURSIVE): Use
proper type.
During libgcc build the first include search path for <...> is
"../newlib/libc/sys/rtems/include". Move all RTEMS specific header
files to "libc/sys/rtems/include" so that they can be found. Later
during libc build the header files in the previous location were somehow
present, but for libgcc build they were invisible. This change is
necessary to use <pthread.h> for the GCC thread model implementation.
newlib/ChangeLog
2015-07-27 Sebastian Huber <sebastian.huber@embedded-brains.de>
libc/sys/rtems/machine/_types.h: Move to ...
libc/sys/rtems/include/machine/_types.h: ... here.
libc/sys/rtems/machine/limits.h: Move to ...
libc/sys/rtems/include/machine/limits.h: ... here.
libc/sys/rtems/machine/param.h: Move to ...
libc/sys/rtems/include/machine/param.h: ... here.
libc/sys/rtems/sys/cpuset.h: Move to ...
libc/sys/rtems/include/sys/cpuset.h: ... here.
libc/sys/rtems/sys/dirent.h: Move to ...
libc/sys/rtems/include/sys/dirent.h: ... here.
libc/sys/rtems/sys/param.h: Move to ...
libc/sys/rtems/include/sys/param.h: ... here.
libc/sys/rtems/sys/syslimits.h: Move to ...
libc/sys/rtems/include/sys/syslimits.h: ... here.
libc/sys/rtems/sys/utime.h: Move to ...
libc/sys/rtems/include/sys/utime.h: ... here.
* libc/include/sys/config.h: Dynamic reentrancy for or1k sys targets
* libc/sys/or1k/: New system for or1k baremetal
* libc/sys/or1k/Makefile.am: New file
* libc/sys/or1k/Makefile.in: New file
* libc/sys/or1k/aclocal.m4: New file
* libc/sys/or1k/configure.in: New file
* libc/sys/or1k/configure: New file
* libc/sys/or1k/getreent.S: New file
* libc/sys/or1k/mlock.S: New file
* libc/sys/or1k/or1k-asm.S: New file
Found by:
find -name '*.h' |xargs grep -i 'attribute.*(([a-z]'
For an example of the type of bugs this causes, try compiling this valid
C11 program (it's valid because 'noreturn' is reserved for use in the
user namespace unless you include <stdnoreturn.h>):
$ cat foo.c
#define noreturn __attribute__((noreturn))
#include <stdlib.h>
$ gcc -c -o foo.o -Wall foo.c
In file included from /usr/include/stdlib.h:11:0,
from foo.c:2:
foo.c:1:18: error: expected ')' before '__attribute__'
#define noreturn __attribute__((noreturn))
^
/usr/include/stdlib.h:66:28: error: expected ',' or ';' before ')' token
_VOID _EXFUN(abort,(_VOID) _ATTRIBUTE ((noreturn)));
^
* libc/machine/spu/spu_timer_internal.h: Decorate attribute names
with __, for namespace safety.
* libc/machine/xscale/machine/profile.h: Likewise.
* libc/include/stdlib.h: Likewise.
* libc/include/_ansi.h: Likewise.
* libc/include/sys/unistd.h: Likewise.
* libc/sys/linux/linuxthreads/libc-symbols.h: Likewise.
* libc/sys/linux/linuxthreads/internals.h: Likewise.
* libc/sys/linux/machine/i386/weakalias.h: Likewise.
* libc/sys/linux/machine/i386/dl-procinfo.h: Likewise.
* libc/sys/linux/machine/i386/dl-machine.h: Likewise.
* libc/sys/linux/libc-symbols.h: Likewise.
* libc/sys/linux/iconv/gconv_charset.h: Likewise.
* libc/sys/linux/include/resolv.h: Likewise.
* libc/sys/linux/sys/unistd.h: Likewise.
* libc/sys/linux/dl/atomicity.h: Likewise.
* libc/sys/linux/dl/dynamic-link.h: Likewise.
* libc/sys/linux/dl/ldsodefs.h: Likewise.
* configure.host (sys_dir, newlib_cflags): Set sys_dir to tirtos and use
-D__DYNAMIC_REENT__ and -DMALLOC_PROVIDED compiler options for TIRTOS
target.
* libc/stdio/local.h (_STDIO_CLOSE_PER_REENT_STD_STREAMS): Change #ifdef
to not define this macro when __tirtos__ is defined.
* libc/sys/tirtos : Add support for TIRTOS.
* libc/sys/tirtos/Makefile.am, libc/sys/tirtos/lock.c: New files.
* libc/sys/tirtos/configure.in, libc/sys/tirtos/include/sys/lock.h: Ditto.
header includes. Include <sys/features.h> for
__GNUC_PREREQ__().
(__u?int.*_t): Define via GCC provided __U?INT.*_TYPE__ if
available.
(__intptr_t): Define.
(__uintptr_t): Likewise.
* libc/include/stdint.h: Include <machine/_default_types.h>
instead of <_ansi.h>.
(u?int.*_t): Define via __u?int.*_t provided by
<machine/_default_types.h>.
(u?int_fast.*_t): Define via GCC provided
__U?INT_FAST.*_TYPE__ if available.
(U?INT.*(MIN|MAX)): Define via GCC provided __U?INT.*(MIN|MAX)__
if available.
(U?INT.*_C): Define via GCC provided __U?INT.*_C if available.
* libc/include/sys/cdefs.h: Use <machine/_default_types.h>
instead of <stdint.h>.
* libc/sys/rtems/sys/cpuset.h: Likewise.
* libc/sys/rtems/machine/_types.h: Include <stdint.h> for
FreeBSD compatibility.
array of undefined size, to avoid problems when compiled with
-msda=4.
* v850/sbrk.c (_sbrk): Change heap_start to be an array of
undefined size, to avoid problems when compiled with -msda=4.
Thomas Klein <th.r.klein@web.de>
* libc/sys/arm/crt0.S: Manually set the target architecture
when compiling for Thumb1 on EABI targets.
Don't use SWI on M-profile cores.
Avoid v6-only Thumb-1 MOV instruction.
Sebastian Huber
Joel Sherrill
Jeff Johnston
Yaakov Selkowitz
Corinna Vinschen
Pieter du Preez
Thomas Preud'homme
Nick Withers
Anton Kolesov
Andre Vieira
Eric Blake
Joel Sherrill
Nick Clifton
Hans-Peter Nilsson
DJ Delorie
Kevin Buettner
Ralf Corsepius
Anthony Green