diff options
Diffstat (limited to 'arch/arm/vfp/vfpinstr.h')
| -rw-r--r-- | arch/arm/vfp/vfpinstr.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/arm/vfp/vfpinstr.h b/arch/arm/vfp/vfpinstr.h new file mode 100644 index 00000000000..6c819aeae00 --- /dev/null +++ b/arch/arm/vfp/vfpinstr.h @@ -0,0 +1,88 @@ +/* + * linux/arch/arm/vfp/vfpinstr.h + * + * Copyright (C) 2004 ARM Limited. + * Written by Deep Blue Solutions Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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) +#define vfp_get_sm(inst) ((inst & 0x0000000f) << 1 | (inst & (1 << 5)) >> 5) +#define vfp_get_dm(inst) ((inst & 0x0000000f)) +#define vfp_get_sn(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7) +#define vfp_get_dn(inst) ((inst & 0x000f0000) >> 16) + +#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) + +/* + * Since we aren't building with -mfpu=vfp, we need to code + * these instructions using their MRC/MCR equivalents. + */ +#define vfpreg(_vfp_) #_vfp_ + +#define fmrx(_vfp_) ({ \ + u32 __v; \ + asm("mrc%? p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmrx %0, " #_vfp_ \ + : "=r" (__v)); \ + __v; \ + }) + +#define fmxr(_vfp_,_var_) \ + asm("mcr%? p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmxr " #_vfp_ ", %0" \ + : : "r" (_var_)) + +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); |