/* 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 . */ #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)));