| /* softfp machine description for MIPS. |
| Copyright (C) 2009-2022 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 |
| |
| #ifdef __mips_nan2008 |
| /* NaN payloads should be preserved for NAN2008. */ |
| # define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ |
| do \ |
| { \ |
| R##_s = X##_s; \ |
| _FP_FRAC_COPY_##wc (R, X); \ |
| R##_c = FP_CLS_NAN; \ |
| } \ |
| while (0) |
| #else |
| /* 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) |
| #endif |
| |
| #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))); |