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Add RTEMS support for GCC libatomic

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Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This commit is contained in:
Sebastian Huber
2016-04-19 10:14:55 +02:00
committed by Corinna Vinschen
parent c54ee3653b
commit 6ee81f44e0
2 changed files with 54 additions and 1 deletions
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9
newlib/libc/sys/rtems/crt0.c
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@@ -16,6 +16,7 @@
#include <time.h> /* struct timespec */
#include <unistd.h> /* isatty */
#include <sys/lock.h> /* _Mutex_recursive_Control */
#include <machine/_libatomic.h>
void rtems_provides_crt0( void ) {} /* dummy symbol so file always has one */
@@ -58,7 +59,13 @@ RTEMS_STUB(int, _Sched_Count(void), { return -1; })
RTEMS_STUB(int, _Sched_Index(void), { return -1; })
RTEMS_STUB(int, _Sched_Name_to_index(const char *p, size_t s), { return -1; })
RTEMS_STUB(int, _Sched_Processor_count(int i), { return 1; })
/* Stubs for routines from RTEMS <machine/_libatomic.h> */
RTEMS_STUB(__uint32_t, _Libatomic_Protect_start(void *ptr), { return 0; });
RTEMS_STUB(void, _Libatomic_Protect_end(void *ptr, __uint32_t isr_level), { });
RTEMS_STUB(void, _Libatomic_Lock_n(void *ptr, __size_t n), { });
RTEMS_STUB(void, _Libatomic_Unlock_n(void *ptr, __size_t n), { });
#if defined(__GNUC__)
/*
* stubs for libstdc++ rtems-threads support functions from gcc/gthr-rtems.h

46
newlib/libc/sys/rtems/include/machine/_libatomic.h Normal file
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@@ -0,0 +1,46 @@
/*-
* Copyright (c) 2016 embedded brains GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* The libatomic is a part of GCC. It provides library support for C11/C++11
* atomic operations. This file defines the interface to the operating system
* for the RTEMS configuration of libatomic.
*/
#include <sys/cdefs.h>
#include <sys/_types.h>
__BEGIN_DECLS
__uint32_t _Libatomic_Protect_start(void *);
void _Libatomic_Protect_end(void *, __uint32_t);
void _Libatomic_Lock_n(void *, __size_t);
void _Libatomic_Unlock_n(void *, __size_t);
__END_DECLS