float_regs_arm_gcc.h

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/*
 * Copyright (c) 2016, Wind River Systems, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef _FLOAT_REGS_ARM_GCC_H
#define _FLOAT_REGS_ARM_GCC_H
 
#if !defined(__GNUC__) || !defined(CONFIG_ARMV7_M_ARMV8_M_FP)
#error __FILE__ goes only with Cortex-M GCC
#endif
 
#include <toolchain.h>
#include "float_context.h"
 
static inline void _load_all_float_registers(struct fp_register_set *regs)
{
        __asm__ volatile (
                "vldmia %0, {s0-s15};\n\t"
                "vldmia %1, {s16-s31};\n\t"
                : : "r" (&regs->fp_volatile), "r" (&regs->fp_non_volatile)
                );
}
 
static inline void _store_all_float_registers(struct fp_register_set *regs)
{
        __asm__ volatile (
                "vstmia %0, {s0-s15};\n\t"
                "vstmia %1, {s16-s31};\n\t"
                : : "r" (&regs->fp_volatile), "r" (&regs->fp_non_volatile)
                : "memory"
                );
}
 
static inline void _load_then_store_all_float_registers(struct fp_register_set
                                                        *regs)
{
        _load_all_float_registers(regs);
        _store_all_float_registers(regs);
}
#endif /* _FLOAT_REGS_ARM_GCC_H */