arch/arm/vfp/vfpinstr.h

root/arch/arm/vfp/vfpinstr.h
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  linux/arch/arm/vfp/vfpinstr.h
 *
 *  Copyright (C) 2004 ARM Limited.
 *  Written by Deep Blue Solutions Limited.
 *
 * VFP instruction masks.
 */
#define INST_CPRTDO(inst)       (((inst) & 0x0f000000) == 0x0e000000)
#define INST_CPRT(inst)         ((inst) & (1 << 4))
#define INST_CPRT_L(inst)       ((inst) & (1 << 20))
#define INST_CPRT_Rd(inst)      (((inst) & (15 << 12)) >> 12)
#define INST_CPRT_OP(inst)      (((inst) >> 21) & 7)
#define INST_CPNUM(inst)        ((inst) & 0xf00)
#define CPNUM(cp)               ((cp) << 8)

#define FOP_MASK        (0x00b00040)
#define FOP_FMAC        (0x00000000)
#define FOP_FNMAC       (0x00000040)
#define FOP_FMSC        (0x00100000)
#define FOP_FNMSC       (0x00100040)
#define FOP_FMUL        (0x00200000)
#define FOP_FNMUL       (0x00200040)
#define FOP_FADD        (0x00300000)
#define FOP_FSUB        (0x00300040)
#define FOP_FDIV        (0x00800000)
#define FOP_EXT         (0x00b00040)

#define FOP_TO_IDX(inst)        ((inst & 0x00b00000) >> 20 | (inst & (1 << 6)) >> 4)

#define FEXT_MASK       (0x000f0080)
#define FEXT_FCPY       (0x00000000)
#define FEXT_FABS       (0x00000080)
#define FEXT_FNEG       (0x00010000)
#define FEXT_FSQRT      (0x00010080)
#define FEXT_FCMP       (0x00040000)
#define FEXT_FCMPE      (0x00040080)
#define FEXT_FCMPZ      (0x00050000)
#define FEXT_FCMPEZ     (0x00050080)
#define FEXT_FCVT       (0x00070080)
#define FEXT_FUITO      (0x00080000)
#define FEXT_FSITO      (0x00080080)
#define FEXT_FTOUI      (0x000c0000)
#define FEXT_FTOUIZ     (0x000c0080)
#define FEXT_FTOSI      (0x000d0000)
#define FEXT_FTOSIZ     (0x000d0080)

#define FEXT_TO_IDX(inst)       ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)

#define vfp_get_sd(inst)        ((inst & 0x0000f000) >> 11 | (inst & (1 << 22)) >> 22)
#define vfp_get_dd(inst)        ((inst & 0x0000f000) >> 12 | (inst & (1 << 22)) >> 18)
#define vfp_get_sm(inst)        ((inst & 0x0000000f) << 1 | (inst & (1 << 5)) >> 5)
#define vfp_get_dm(inst)        ((inst & 0x0000000f) | (inst & (1 << 5)) >> 1)
#define vfp_get_sn(inst)        ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
#define vfp_get_dn(inst)        ((inst & 0x000f0000) >> 16 | (inst & (1 << 7)) >> 3)

#define vfp_single(inst)        (((inst) & 0x0000f00) == 0xa00)

#define FPSCR_N (1 << 31)
#define FPSCR_Z (1 << 30)
#define FPSCR_C (1 << 29)
#define FPSCR_V (1 << 28)

#define fmrx(_vfp_) ({                          \
        u32 __v;                                \
        asm volatile (".fpu     vfpv2\n"        \
                      "vmrs     %0, " #_vfp_    \
                     : "=r" (__v) : : "cc");    \
        __v;                                    \
})

#define fmxr(_vfp_, _var_) ({                   \
        asm volatile (".fpu     vfpv2\n"        \
                      "vmsr     " #_vfp_ ", %0" \
                     : : "r" (_var_) : "cc");   \
})

u32 vfp_single_cpdo(u32 inst, u32 fpscr);
u32 vfp_single_cprt(u32 inst, u32 fpscr, struct pt_regs *regs);

u32 vfp_double_cpdo(u32 inst, u32 fpscr);
Linux
