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/************************************************************************************
* configs/sama5d3x-ek/src/sam_ostest.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <debug.h>
#include <arch/irq.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "sama5d3x-ek.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Configuration ********************************************************************/
#undef HAVE_FPU
#if defined(CONFIG_ARCH_FPU) && !defined(CONFIG_EXAMPLES_OSTEST_FPUTESTDISABLE) && \
defined(CONFIG_EXAMPLES_OSTEST_FPUSIZE) && defined(CONFIG_SCHED_WAITPID) && \
!defined(CONFIG_DISABLE_SIGNALS)
# define HAVE_FPU 1
#endif
#ifdef HAVE_FPU
#if CONFIG_EXAMPLES_OSTEST_FPUSIZE != (4*FPU_CONTEXT_REGS)
# error "CONFIG_EXAMPLES_OSTEST_FPUSIZE has the wrong size"
#endif
/************************************************************************************
* Private Data
************************************************************************************/
static uint32_t g_saveregs[XCPTCONTEXT_REGS];
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/* Given an array of size CONFIG_EXAMPLES_OSTEST_FPUSIZE, this function will return
* the current FPU registers.
*/
void arch_getfpu(FAR uint32_t *fpusave)
{
irqstate_t flags;
/* Take a snapshot of the thread context right now */
flags = irqsave();
up_saveusercontext(g_saveregs);
/* Return only the floating register values */
memcpy(fpusave, &g_saveregs[REG_S0], (4*FPU_CONTEXT_REGS));
irqrestore(flags);
}
/* Given two arrays of size CONFIG_EXAMPLES_OSTEST_FPUSIZE this function
* will compare them and return true if they are identical.
*/
bool arch_cmpfpu(FAR const uint32_t *fpusave1, FAR const uint32_t *fpusave2)
{
return memcmp(fpusave1, fpusave2, (4*FPU_CONTEXT_REGS)) == 0;
}
#endif /* HAVE_FPU */
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