score/src/threadloadenv.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreThread
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Thread_Load_environment().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-1999.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/score/threadimpl.h>
0043
0044 void _Thread_Load_environment(
0045   Thread_Control *the_thread
0046 )
0047 {
0048   const Thread_CPU_budget_operations *cpu_budget_operations;
0049
0050 #if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )
0051   if ( the_thread->Start.fp_context ) {
0052     the_thread->fp_context = the_thread->Start.fp_context;
0053     _Context_Initialize_fp( &the_thread->fp_context );
0054   }
0055 #endif
0056
0057   the_thread->is_preemptible   = the_thread->Start.is_preemptible;
0058
0059   cpu_budget_operations = the_thread->Start.cpu_budget_operations;
0060   the_thread->CPU_budget.operations = cpu_budget_operations;
0061
0062   if ( cpu_budget_operations != NULL ) {
0063     ( *cpu_budget_operations->initialize )( the_thread );
0064   }
0065
0066   _Context_Initialize(
0067     &the_thread->Registers,
0068     the_thread->Start.Initial_stack.area,
0069     the_thread->Start.Initial_stack.size,
0070     the_thread->Start.isr_level,
0071     _Thread_Handler,
0072     the_thread->is_fp,
0073     the_thread->Start.tls_area
0074   );
0075 }