97 lines
4.1 KiB
C
97 lines
4.1 KiB
C
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/****************************************************************************
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* arch/arm/src/common/up_pthread_start.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <pthread.h>
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#include <nuttx/arch.h>
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#include "svcall.h"
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#include "up_internal.h"
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#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__) && !defined(CONFIG_DISABLE_PTHREAD)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_pthread_start
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*
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* Description:
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* In this kernel mode build, this function will be called to execute a
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* pthread in user-space. When the pthread is first started, a kernel-mode
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* stub will first run to perform some housekeeping functions. This
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* kernel-mode stub will then be called transfer control to the user-mode
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* pthread.
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*
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* Normally the a user-mode start-up stub will also execute before the
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* pthread actually starts. See libc/pthread/pthread_startup.c
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*
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* Input Parameters:
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* entrypt - The user-space address of the pthread entry point
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* arg - Standard argument for the pthread entry point
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*
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* Returned Value:
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* This function should not return. It should call the user-mode start-up
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* stub and that stub should call pthread_exit if/when the user pthread
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* terminates.
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*
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****************************************************************************/
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void up_pthread_start(pthread_startroutine_t entrypt, pthread_addr_t arg)
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{
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/* Let sys_call2() do all of the work */
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sys_call2(SYS_pthread_start, (uintptr_t)entrypt, (uintptr_t)arg);
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}
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#endif /* CONFIG_NUTTX_KERNEL &&& __KERNEL__ && !CONFIG_DISABLE_PTHREAD */
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