/************************************************************************************ * configs/stm3240g-eval/src/stm32_ostest.c * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include #include "up_arch.h" #include "up_internal.h" #include "stm3240g-eval.h" /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* Configuration ********************************************************************/ #undef HAVE_FPU #if defined(CONFIG_ARCH_FPU) && 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*SW_FPU_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 = enter_critical_section(); up_saveusercontext(g_saveregs); /* Return only the floating register values */ memcpy(fpusave, &g_saveregs[REG_S0], (4*SW_FPU_REGS)); leave_critical_section(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*SW_FPU_REGS)) == 0; } #endif /* HAVE_FPU */