diff options
Diffstat (limited to 'sysdeps/mips')
| -rw-r--r-- | sysdeps/mips/Makefile | 2 | ||||
| -rw-r--r-- | sysdeps/mips/bits/fenv.h | 72 | ||||
| -rw-r--r-- | sysdeps/mips/fclrexcpt.c | 40 | ||||
| -rw-r--r-- | sysdeps/mips/fegetenv.c | 28 | ||||
| -rw-r--r-- | sysdeps/mips/fegetround.c | 33 | ||||
| -rw-r--r-- | sysdeps/mips/fesetenv.c | 31 | ||||
| -rw-r--r-- | sysdeps/mips/fesetround.c | 43 | ||||
| -rw-r--r-- | sysdeps/mips/feupdateenv.c | 40 | ||||
| -rw-r--r-- | sysdeps/mips/fgetexcptflg.c | 33 | ||||
| -rw-r--r-- | sysdeps/mips/ftestexcept.c | 33 |
10 files changed, 354 insertions, 1 deletions
diff --git a/sysdeps/mips/Makefile b/sysdeps/mips/Makefile index 736414197a..5585c61f03 100644 --- a/sysdeps/mips/Makefile +++ b/sysdeps/mips/Makefile @@ -1,3 +1,3 @@ ifeq ($(subdir),setjmp) -sysdep_routines := $(sysdep_routines) setjmp_aux +sysdep_routines += setjmp_aux endif diff --git a/sysdeps/mips/bits/fenv.h b/sysdeps/mips/bits/fenv.h new file mode 100644 index 0000000000..0637bf7623 --- /dev/null +++ b/sysdeps/mips/bits/fenv.h @@ -0,0 +1,72 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _FENV_H +# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + + +/* Define bits representing the exception. We use the bit positions + of the appropriate bits in the FPU control word. */ +enum + { + FE_INEXACT = 0x04, +#define FE_INEXACT FE_INEXACT + FE_UNDERFLOW = 0x08, +#define FE_UNDERFLOW FE_UNDERFLOW + FE_OVERFLOW = 0x10, +#define FE_OVERFLOW FE_OVERFLOW + FE_DIVBYZERO = 0x20, +#define FE_DIVBYZERO FE_DIVBYZERO + FE_INVALID = 0x40, +#define FE_INVALID FE_INVALID + }; + +#define FE_ALL_EXCEPT \ + (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) + +/* The MIPS FPU supports all of the four defined rounding modes. We + use again the bit positions in the FPU control word as the values + for the appropriate macros. */ +enum + { + FE_TONEAREST = 0x0, +#define FE_TONEAREST FE_TONEAREST + FE_TOWARDZERO = 0x1, +#define FE_TOWARDZERO FE_TOWARDZERO + FE_UPWARD = 0x2, +#define FE_UPWARD FE_UPWARD + FE_DOWNWARD = 0x3 +#define FE_DOWNWARD FE_DOWNWARD + }; + + +/* Type representing exception flags. */ +typedef unsigned short int fexcept_t; + + +/* Type representing floating-point environment. This function corresponds + to the layout of the block written by the `fstenv'. */ +typedef struct + { + unsigned int fp_control_register; + } +fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((fenv_t *) -1) diff --git a/sysdeps/mips/fclrexcpt.c b/sysdeps/mips/fclrexcpt.c new file mode 100644 index 0000000000..de96dd0b5c --- /dev/null +++ b/sysdeps/mips/fclrexcpt.c @@ -0,0 +1,40 @@ +/* Clear given exceptions in current floating-point environment. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +void +feclearexcept (int excepts) +{ + int cw; + + /* Mask out unsupported bits/exceptions. */ + excepts &= FE_ALL_EXCEPT; + + /* Read the complete control word. */ + _FPU_GETCW (cw); + + /* Clear exception bits. */ + cw &= ~excepts; + + /* Put the new data in effect. */ + _FPU_SETCW (cw); +} diff --git a/sysdeps/mips/fegetenv.c b/sysdeps/mips/fegetenv.c new file mode 100644 index 0000000000..13a2c8fc19 --- /dev/null +++ b/sysdeps/mips/fegetenv.c @@ -0,0 +1,28 @@ +/* Store current floating-point environment. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +void +fegetenv (fenv_t *envp) +{ + _FPU_GETCW (*envp); +} diff --git a/sysdeps/mips/fegetround.c b/sysdeps/mips/fegetround.c new file mode 100644 index 0000000000..e2e51ae64d --- /dev/null +++ b/sysdeps/mips/fegetround.c @@ -0,0 +1,33 @@ +/* Return current rounding direction. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +int +fegetround (void) +{ + int cw; + + /* Get control word. */ + _FPU_GETCW (cw); + + return cw & 0x3; +} diff --git a/sysdeps/mips/fesetenv.c b/sysdeps/mips/fesetenv.c new file mode 100644 index 0000000000..58df06391e --- /dev/null +++ b/sysdeps/mips/fesetenv.c @@ -0,0 +1,31 @@ +/* Install given floating-point environment. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +void +fesetenv (const fenv_t *envp) +{ + if (envp == FE_DFL_ENV) + _FPU_SETCW (_FPU_DEFAULT); + else + _FPU_SETCW (envp->fp_control_register); +} diff --git a/sysdeps/mips/fesetround.c b/sysdeps/mips/fesetround.c new file mode 100644 index 0000000000..6b623d6eab --- /dev/null +++ b/sysdeps/mips/fesetround.c @@ -0,0 +1,43 @@ +/* Set current rounding direction. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +int +fesetround (int round) +{ + unsigned short int cw; + + if ((round & ~0x3) != 0) + /* ROUND is no valid rounding mode. */ + return 0; + + /* Get current state. */ + _FPU_GETCW (cw); + + /* Set rounding bits. */ + cw &= ~0x3; + cw |= round; + /* Set new state. */ + _FPU_SETCW (cw); + + return 1; +} diff --git a/sysdeps/mips/feupdateenv.c b/sysdeps/mips/feupdateenv.c new file mode 100644 index 0000000000..e826084671 --- /dev/null +++ b/sysdeps/mips/feupdateenv.c @@ -0,0 +1,40 @@ +/* Install given floating-point environment and raise exceptions. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +void +feupdateenv (const fenv_t *envp) +{ + int temp; + + /* Save current exceptions. */ + _FPU_GETCW (temp); + temp &= FE_ALL_EXCEPT; + + /* Install new environment. */ + fesetenv (envp); + + /* Raise the safed exception. Incidently for us the implementation + defined format of the values in objects of type fexcept_t is the + same as the ones specified using the FE_* constants. */ + feraiseexcept (temp); +} diff --git a/sysdeps/mips/fgetexcptflg.c b/sysdeps/mips/fgetexcptflg.c new file mode 100644 index 0000000000..f3d52bc555 --- /dev/null +++ b/sysdeps/mips/fgetexcptflg.c @@ -0,0 +1,33 @@ +/* Store current representation for exceptions. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +void +fegetexceptflag (fexcept_t *flagp, int excepts) +{ + fexcept_t temp; + + /* Get the current exceptions. */ + _FPU_GETCW (temp); + + *flagp = temp & excepts & FE_ALL_EXCEPT; +} diff --git a/sysdeps/mips/ftestexcept.c b/sysdeps/mips/ftestexcept.c new file mode 100644 index 0000000000..f348258318 --- /dev/null +++ b/sysdeps/mips/ftestexcept.c @@ -0,0 +1,33 @@ +/* Test exception in current environment. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fenv.h> +#include <fpu_control.h> + +int +fetestexcept (int excepts) +{ + int cw; + + /* Get current control word. */ + _FPU_GETCW (cw); + + return cw & excepts & FE_ALL_EXCEPT; +} |