float_regs_arc_gcc.h

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/*
 * Copyright (c) 2019, Synopsys.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef _FLOAT_REGS_ARC_GCC_H
#define _FLOAT_REGS_ARC_GCC_H
 
#if !defined(__GNUC__) || !defined(CONFIG_ISA_ARCV2)
#error __FILE__ goes only with ARC GCC
#endif
 
#include <toolchain.h>
#include "float_context.h"
 
static inline void _load_all_float_registers(struct fp_register_set *regs)
{
#ifdef CONFIG_FP_FPU_DA
        uint32_t temp = 0;
 
        __asm__ volatile (
                "ld.ab %1, [%0, 4];\n\t"
                "sr %1, [%2];\n\t"
                "ld.ab %1, [%0, 4];\n\t"
                "sr %1, [%3];\n\t"
                "ld.ab %1, [%0, 4];\n\t"
                "sr %1, [%4];\n\t"
                "ld.ab %1, [%0, 4];\n\t"
                "sr %1, [%5];\n\t"
                : : "r" (regs), "r" (temp),
                "i"(_ARC_V2_FPU_DPFP1L), "i"(_ARC_V2_FPU_DPFP1H),
                "i"(_ARC_V2_FPU_DPFP2L), "i"(_ARC_V2_FPU_DPFP2H)
                : "memory"
                );
#endif
}
 
static inline void _store_all_float_registers(struct fp_register_set *regs)
{
#ifdef CONFIG_FP_FPU_DA
        uint32_t temp = 0;
 
        __asm__ volatile (
                "lr %1, [%2];\n\t"
                "st.ab %1, [%0, 4];\n\t"
                "lr %1, [%3];\n\t"
                "st.ab %1, [%0, 4];\n\t"
                "lr %1, [%4];\n\t"
                "st.ab %1, [%0, 4];\n\t"
                "lr %1, [%5];\n\t"
                "st.ab %1, [%0, 4];\n\t"
                : : "r" (regs), "r" (temp),
                "i"(_ARC_V2_FPU_DPFP1L), "i"(_ARC_V2_FPU_DPFP1H),
                "i"(_ARC_V2_FPU_DPFP2L), "i"(_ARC_V2_FPU_DPFP2H)
                );
#endif
}
 
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_ARC_GCC_H */