| /* Machine-dependent software floating-point definitions. |
| Sparc64 userland (_Q_* and _Qp_*) version. |
| Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson (rth@cygnus.com), |
| Jakub Jelinek (jj@ultra.linux.cz) and |
| David S. Miller (davem@redhat.com). |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <fpu_control.h> |
| #include <fenv.h> |
| #include <stdlib.h> |
| |
| #define _FP_W_TYPE_SIZE 64 |
| #define _FP_W_TYPE unsigned long |
| #define _FP_WS_TYPE signed long |
| #define _FP_I_TYPE long |
| |
| /* Helper macros for _FP_MUL_MEAT_2_120_240_double. */ |
| #define _FP_MUL_MEAT_SET_FE_TZ \ |
| do { \ |
| static fpu_control_t _fetz = _FPU_RC_DOWN; \ |
| _FPU_SETCW(_fetz); \ |
| } while (0) |
| #ifndef _FP_MUL_MEAT_RESET_FE |
| #define _FP_MUL_MEAT_RESET_FE _FPU_SETCW(_fcw) |
| #endif |
| |
| #define _FP_MUL_MEAT_S(R,X,Y) \ |
| _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) |
| #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_120_240_double(_FP_WFRACBITS_Q,R,X,Y, \ |
| _FP_MUL_MEAT_SET_FE_TZ, \ |
| _FP_MUL_MEAT_RESET_FE) |
| |
| #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) |
| #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) |
| |
| #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 |
| #define _FP_NANSIGN_S 0 |
| #define _FP_NANSIGN_D 0 |
| #define _FP_NANSIGN_Q 0 |
| |
| #define _FP_KEEPNANFRACP 1 |
| #define _FP_QNANNEGATEDP 0 |
| |
| /* If one NaN is signaling and the other is not, |
| * we choose that one, otherwise we choose Y. |
| */ |
| #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ |
| do { \ |
| if ((_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs) \ |
| && !(_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)) \ |
| { \ |
| R##_s = X##_s; \ |
| _FP_FRAC_COPY_##wc(R,X); \ |
| } \ |
| else \ |
| { \ |
| R##_s = Y##_s; \ |
| _FP_FRAC_COPY_##wc(R,Y); \ |
| } \ |
| R##_c = FP_CLS_NAN; \ |
| } while (0) |
| |
| /* Obtain the current rounding mode. */ |
| #ifndef FP_ROUNDMODE |
| #define FP_ROUNDMODE ((_fcw >> 30) & 0x3) |
| #endif |
| |
| /* Exception flags. */ |
| #define FP_EX_INVALID (1 << 4) |
| #define FP_EX_OVERFLOW (1 << 3) |
| #define FP_EX_UNDERFLOW (1 << 2) |
| #define FP_EX_DIVZERO (1 << 1) |
| #define FP_EX_INEXACT (1 << 0) |
| |
| #define _FP_DECL_EX \ |
| fpu_control_t _fcw __attribute__ ((unused)) = (FP_RND_NEAREST << 30) |
| |
| #define FP_INIT_ROUNDMODE \ |
| do { \ |
| _FPU_GETCW(_fcw); \ |
| } while (0) |
| |
| #define FP_TRAPPING_EXCEPTIONS ((_fcw >> 23) & 0x1f) |
| #define FP_INHIBIT_RESULTS ((_fcw >> 23) & _fex) |
| |
| /* Simulate exceptions using double arithmetics. */ |
| extern void __Qp_handle_exceptions(int exc); |
| |
| #define FP_HANDLE_EXCEPTIONS \ |
| do { \ |
| if (!_fex) \ |
| { \ |
| /* This is the common case, so we do it inline. \ |
| * We need to clear cexc bits if any. \ |
| */ \ |
| __asm__ __volatile__("fzero %%f62\n\t" \ |
| "faddd %%f62, %%f62, %%f62" \ |
| : : : "f62"); \ |
| } \ |
| else \ |
| { \ |
| __Qp_handle_exceptions (_fex); \ |
| } \ |
| } while (0) |
| |
| #define QP_HANDLE_EXCEPTIONS(_a) \ |
| do { \ |
| if ((_fcw >> 23) & _fex) \ |
| { \ |
| _a; \ |
| } \ |
| else \ |
| { \ |
| _fcw = (_fcw & ~0x1fL) | (_fex << 5) | _fex; \ |
| _FPU_SETCW(_fcw); \ |
| } \ |
| } while (0) |
| |
| #define QP_NO_EXCEPTIONS \ |
| __asm ("fzero %%f62\n\t" \ |
| "faddd %%f62, %%f62, %%f62" : : : "f62") |
| |
| #define QP_CLOBBER "memory", "f52", "f54", "f56", "f58", "f60", "f62" |
| #define QP_CLOBBER_CC QP_CLOBBER , "cc" |