2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
115 lines
3.8 KiB
C
Executable file
115 lines
3.8 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2010 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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//----------------------------------------------------------------------------------------------------//
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//! @file libsemaphore.c
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//! This contains system call wrapper functions for POSIX Semaphore routines
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//----------------------------------------------------------------------------------------------------//
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#include <os_config.h>
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#include <sys/syscall.h>
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#include <semaphore.h>
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#include <stdarg.h>
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#include <sys/ksemaphore.h>
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extern void* make_syscall (void *arg1, void *arg2, void *arg3, void *arg4, void *arg5, int syscall_num);
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#ifdef CONFIG_SEMA
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int sem_init(sem_t* sem, int pshared, unsigned value)
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{
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return (int) make_syscall ((void*)sem, (void*)pshared, (void*)value, NULL, NULL, SC_SEM_INIT);
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}
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int sem_trywait(sem_t* sem)
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{
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return (int) make_syscall ((void*)sem, NULL, NULL, NULL, NULL, SC_SEM_TRYWAIT);
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}
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int sem_wait(sem_t* sem)
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{
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return (int) make_syscall ((void*)sem, NULL, NULL, NULL, NULL, SC_SEM_WAIT);
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}
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#ifdef CONFIG_TIME
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int sem_timedwait (sem_t* sem, unsigned int ticks)
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{
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return (int) make_syscall ((void*)sem, (void*)ticks, NULL, NULL, NULL, SC_SEM_TIMED_WAIT);
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}
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#endif
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int sem_getvalue(sem_t* sem, int* sval)
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{
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return (int) make_syscall ((void*)sem, (void*)sval, NULL, NULL, NULL, SC_SEM_GETVALUE);
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}
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int sem_post(sem_t* sem)
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{
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return (int) make_syscall ((void*)sem, NULL, NULL, NULL, NULL, SC_SEM_POST);
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}
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#ifdef CONFIG_NAMED_SEMA
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sem_t* sem_open(const char* name, int oflag, ...)
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{
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mode_t mode;
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unsigned value;
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va_list varptr;
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if( !(oflag & O_CREAT) ) // Other flags unsupported
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return (sem_t*)SEM_FAILED;
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if (!(oflag & O_EXCL)) {
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va_start( varptr, oflag );
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mode = va_arg( varptr, mode_t );
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value = va_arg( varptr, unsigned );
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va_end (varptr);
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}
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return (sem_t*) make_syscall ((void*)name, (void*)oflag, (void*)mode, (void*)value, NULL, SC_SEM_OPEN);
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}
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int sem_unlink(const char* name)
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{
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return (int) make_syscall ((void*)name, NULL, NULL, NULL, NULL, SC_SEM_UNLINK);
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}
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int sem_close(sem_t* sem)
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{
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return (int) make_syscall ((void*)sem, NULL, NULL, NULL, NULL, SC_SEM_CLOSE);
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}
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#endif
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int sem_destroy(sem_t* sem)
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{
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return (int) make_syscall ((void*)sem, NULL, NULL, NULL, NULL, SC_SEM_DESTROY);
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}
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#endif /* CONFIG_SEMA */
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