/* SPDX-License-Identifier: GPL-2.0 */
/*
 * arch/arm/include/asm/vfpmacros.h
 *
 * Assembler-only file containing VFP macros and register definitions.
 */
#include <asm/hwcap.h>

#include <asm/vfp.h>

        .macro  VFPFMRX, rd, sysreg, cond
        vmrs\cond       \rd, \sysreg
        .endm

        .macro  VFPFMXR, sysreg, rd, cond
        vmsr\cond       \sysreg, \rd
        .endm

        @ read all the working registers back into the VFP
        .macro  VFPFLDMIA, base, tmp
        .fpu    vfpv2
#if __LINUX_ARM_ARCH__ < 6
        fldmiax \base!, {d0-d15}
#else
        vldmia  \base!, {d0-d15}
#endif
#ifdef CONFIG_VFPv3
        .fpu    vfpv3
#if __LINUX_ARM_ARCH__ <= 6
        ldr     \tmp, =elf_hwcap                    @ may not have MVFR regs
        ldr     \tmp, [\tmp, #0]
        tst     \tmp, #HWCAP_VFPD32
        vldmiane \base!, {d16-d31}
        addeq   \base, \base, #32*4                 @ step over unused register space
#else
        VFPFMRX \tmp, MVFR0                         @ Media and VFP Feature Register 0
        and     \tmp, \tmp, #MVFR0_A_SIMD_MASK      @ A_SIMD field
        cmp     \tmp, #2                            @ 32 x 64bit registers?
        vldmiaeq \base!, {d16-d31}
        addne   \base, \base, #32*4                 @ step over unused register space
#endif
#endif
        .endm

        @ write all the working registers out of the VFP
        .macro  VFPFSTMIA, base, tmp
#if __LINUX_ARM_ARCH__ < 6
        fstmiax \base!, {d0-d15}
#else
        vstmia  \base!, {d0-d15}
#endif
#ifdef CONFIG_VFPv3
        .fpu    vfpv3
#if __LINUX_ARM_ARCH__ <= 6
        ldr     \tmp, =elf_hwcap                    @ may not have MVFR regs
        ldr     \tmp, [\tmp, #0]
        tst     \tmp, #HWCAP_VFPD32
        vstmiane \base!, {d16-d31}
        addeq   \base, \base, #32*4                 @ step over unused register space
#else
        VFPFMRX \tmp, MVFR0                         @ Media and VFP Feature Register 0
        and     \tmp, \tmp, #MVFR0_A_SIMD_MASK      @ A_SIMD field
        cmp     \tmp, #2                            @ 32 x 64bit registers?
        vstmiaeq \base!, {d16-d31}
        addne   \base, \base, #32*4                 @ step over unused register space
#endif
#endif
        .endm