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Diffstat (limited to 'gcc-4.9/libgcc/config/mips/sfp-machine.h')
| -rw-r--r-- | gcc-4.9/libgcc/config/mips/sfp-machine.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/mips/sfp-machine.h b/gcc-4.9/libgcc/config/mips/sfp-machine.h new file mode 100644 index 000000000..e9d33b7dc --- /dev/null +++ b/gcc-4.9/libgcc/config/mips/sfp-machine.h @@ -0,0 +1,180 @@ +/* softfp machine description for MIPS. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifdef __mips64 +#define _FP_W_TYPE_SIZE 64 +#define _FP_W_TYPE unsigned long long +#define _FP_WS_TYPE signed long long +#define _FP_I_TYPE long long + +typedef int TItype __attribute__ ((mode (TI))); +typedef unsigned int UTItype __attribute__ ((mode (TI))); +#define TI_BITS (__CHAR_BIT__ * (int) sizeof (TItype)) + +#define _FP_MUL_MEAT_S(R,X,Y) \ + _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_D(R,X,Y) \ + _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_Q(R,X,Y) \ + _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) + +#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(S,R,X,Y) +#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y) +#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) + +#ifdef __mips_nan2008 +# define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) +# define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) +# define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 +#else +# define _FP_NANFRAC_S (_FP_QNANBIT_S - 1) +# define _FP_NANFRAC_D (_FP_QNANBIT_D - 1) +# define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1 +#endif +#else +#define _FP_W_TYPE_SIZE 32 +#define _FP_W_TYPE unsigned int +#define _FP_WS_TYPE signed int +#define _FP_I_TYPE int + +#define _FP_MUL_MEAT_S(R,X,Y) \ + _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_D(R,X,Y) \ + _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_Q(R,X,Y) \ + _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) + +#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(S,R,X,Y) +#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) +#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) + +#ifdef __mips_nan2008 +# define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) +# define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 +# define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 +#else +# define _FP_NANFRAC_S (_FP_QNANBIT_S - 1) +# define _FP_NANFRAC_D (_FP_QNANBIT_D - 1), -1 +# define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1, -1, -1 +#endif +#endif + +/* The type of the result of a floating point comparison. This must + match __libgcc_cmp_return__ in GCC for the target. */ +typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); +#define CMPtype __gcc_CMPtype + +#define _FP_NANSIGN_S 0 +#define _FP_NANSIGN_D 0 +#define _FP_NANSIGN_Q 0 + +#define _FP_KEEPNANFRACP 1 +#ifdef __mips_nan2008 +# define _FP_QNANNEGATEDP 0 +#else +# define _FP_QNANNEGATEDP 1 +#endif + +/* Comment from glibc: */ +/* From my experiments it seems X is chosen unless one of the + NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */ +#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ + do { \ + if ((_FP_FRAC_HIGH_RAW_##fs(X) | \ + _FP_FRAC_HIGH_RAW_##fs(Y)) & _FP_QNANBIT_##fs) \ + { \ + R##_s = _FP_NANSIGN_##fs; \ + _FP_FRAC_SET_##wc(R,_FP_NANFRAC_##fs); \ + } \ + else \ + { \ + R##_s = X##_s; \ + _FP_FRAC_COPY_##wc(R,X); \ + } \ + R##_c = FP_CLS_NAN; \ + } while (0) + +#ifdef __mips_hard_float +#define FP_EX_INVALID 0x40 +#define FP_EX_DIVZERO 0x20 +#define FP_EX_OVERFLOW 0x10 +#define FP_EX_UNDERFLOW 0x08 +#define FP_EX_INEXACT 0x04 +#define FP_EX_ALL \ + (FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \ + | FP_EX_INEXACT) + +#define FP_EX_ENABLE_SHIFT 5 +#define FP_EX_CAUSE_SHIFT 10 + +#define FP_RND_NEAREST 0x0 +#define FP_RND_ZERO 0x1 +#define FP_RND_PINF 0x2 +#define FP_RND_MINF 0x3 +#define FP_RND_MASK 0x3 + +#define _FP_DECL_EX \ + unsigned long int _fcsr __attribute__ ((unused)) = FP_RND_NEAREST + +#define FP_INIT_ROUNDMODE \ + do { \ + _fcsr = __builtin_mips_get_fcsr (); \ + } while (0) + +#define FP_ROUNDMODE (_fcsr & FP_RND_MASK) + +#define FP_TRAPPING_EXCEPTIONS ((_fcsr >> FP_EX_ENABLE_SHIFT) & FP_EX_ALL) + +#define FP_HANDLE_EXCEPTIONS \ + do { \ + _fcsr &= ~(FP_EX_ALL << FP_EX_CAUSE_SHIFT); \ + /* Also clear Unimplemented Operation. */ \ + _fcsr &= ~(1 << 17); \ + _fcsr |= _fex | (_fex << FP_EX_CAUSE_SHIFT); \ + __builtin_mips_set_fcsr (_fcsr); \ + } while (0); + +#else +#define FP_EX_INVALID (1 << 4) +#define FP_EX_DIVZERO (1 << 3) +#define FP_EX_OVERFLOW (1 << 2) +#define FP_EX_UNDERFLOW (1 << 1) +#define FP_EX_INEXACT (1 << 0) +#endif + +#define _FP_TININESS_AFTER_ROUNDING 1 + +#define __LITTLE_ENDIAN 1234 +#define __BIG_ENDIAN 4321 + +#if defined _MIPSEB +# define __BYTE_ORDER __BIG_ENDIAN +#else +# define __BYTE_ORDER __LITTLE_ENDIAN +#endif + +/* Define ALIASNAME as a strong alias for NAME. */ +# define strong_alias(name, aliasname) _strong_alias(name, aliasname) +# define _strong_alias(name, aliasname) \ + extern __typeof (name) aliasname __attribute__ ((alias (#name))); |