From 6ee81f44e04848901c7b05c968564d34a7ceed06 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Tue, 19 Apr 2016 10:14:55 +0200 Subject: [PATCH] Add RTEMS support for GCC libatomic Signed-off-by: Sebastian Huber --- newlib/libc/sys/rtems/crt0.c | 9 +++- .../sys/rtems/include/machine/_libatomic.h | 46 +++++++++++++++++++ 2 files changed, 54 insertions(+), 1 deletion(-) create mode 100644 newlib/libc/sys/rtems/include/machine/_libatomic.h diff --git a/newlib/libc/sys/rtems/crt0.c b/newlib/libc/sys/rtems/crt0.c index 8d87fd4cf..3bf70832c 100644 --- a/newlib/libc/sys/rtems/crt0.c +++ b/newlib/libc/sys/rtems/crt0.c @@ -16,6 +16,7 @@ #include /* struct timespec */ #include /* isatty */ #include /* _Mutex_recursive_Control */ +#include 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 */ +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 diff --git a/newlib/libc/sys/rtems/include/machine/_libatomic.h b/newlib/libc/sys/rtems/include/machine/_libatomic.h new file mode 100644 index 000000000..3456440a2 --- /dev/null +++ b/newlib/libc/sys/rtems/include/machine/_libatomic.h @@ -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 +#include + +__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 -- 2.43.5