diff options
Diffstat (limited to 'sysdeps/m68k/fpu')
37 files changed, 798 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/Makefile b/sysdeps/m68k/fpu/Makefile new file mode 100644 index 0000000000..42db6381d3 --- /dev/null +++ b/sysdeps/m68k/fpu/Makefile @@ -0,0 +1,11 @@ +ifeq ($(subdir),math) +ifndef math-twiddled + +# Avoid twiddling in generic/Makefile. +math-twiddled := t + +endif + +bsdmath_dirs := $(bsdmath_dirs) mc68881 + +endif diff --git a/sysdeps/m68k/fpu/__math.h b/sysdeps/m68k/fpu/__math.h new file mode 100644 index 0000000000..a9ae2d966c --- /dev/null +++ b/sysdeps/m68k/fpu/__math.h @@ -0,0 +1,168 @@ +/* Copyright (C) 1991, 1992, 1993, 1994 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifdef __GNUC__ + +#include <sys/cdefs.h> + +#ifdef __NO_MATH_INLINES +/* This is used when defining the functions themselves. Define them with + __ names, and with `static inline' instead of `extern inline' so the + bodies will always be used, never an external function call. */ +#define __m81_u(x) __CONCAT(__,x) +#define __m81_inline static __inline +#else +#define __m81_u(x) x +#define __m81_inline exter __inline +#define __MATH_INLINES 1 +#endif + +#define __inline_mathop2(func, op) \ + __m81_inline __CONSTVALUE double \ + __m81_u(func)(double __mathop_x) \ + { \ + double __result; \ + __asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\ + return __result; \ + } +#define __inline_mathop(op) __inline_mathop2(op, op) + +__inline_mathop(acos) +__inline_mathop(asin) +__inline_mathop(atan) +__inline_mathop(cos) +__inline_mathop(sin) +__inline_mathop(tan) +__inline_mathop(cosh) +__inline_mathop(sinh) +__inline_mathop(tanh) +__inline_mathop2(exp, etox) +__inline_mathop2(fabs, abs) +__inline_mathop(log10) +__inline_mathop2(log, logn) +__inline_mathop2(floor, intrz) +__inline_mathop(sqrt) + +__inline_mathop2(__rint, int) +__inline_mathop2(__expm1, etoxm1) + +#ifdef __USE_MISC +__inline_mathop2(rint, int) +__inline_mathop2(expm1, etoxm1) +__inline_mathop2(log1p, lognp1) +__inline_mathop(atanh) +#endif + +__m81_inline __CONSTVALUE double +__m81_u(__drem)(double __x, double __y) +{ + double __result; + __asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); + return __result; +} + +__m81_inline __CONSTVALUE double +__m81_u(ldexp)(double __x, int __e) +{ + double __result; + double __double_e = (double) __e; + __asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_e), "0" (__x)); + return __result; +} + +__m81_inline __CONSTVALUE double +__m81_u(fmod)(double __x, double __y) +{ + double __result; + __asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); + return __result; +} + +__m81_inline double +__m81_u(frexp)(double __value, int *__expptr) +{ + double __mantissa, __exponent; + __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); + __asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value)); + *__expptr = (int) __exponent; + return __mantissa; +} + +__m81_inline __CONSTVALUE double +__m81_u(pow)(double __x, double __y) +{ + double __result; + if (__y == 0.0 || __x == 1.0) + __result = 1.0; + else if (__y == 1.0) + __result = __x; + else if (__y == 2.0) + __result = __x * __x; + else if (__x == 10.0) + __asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y)); + else if (__x == 2.0) + __asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y)); + else + __result = __m81_u(exp)(__y * __m81_u(log)(__x)); + return __result; +} + +__m81_inline __CONSTVALUE double +__m81_u(ceil)(double __x) +{ + double __result; + unsigned long int __ctrl_reg; + __asm("fmove%.l fpcr, %0" : "=g" (__ctrl_reg)); + /* Set rounding towards positive infinity. */ + __asm("fmove%.l %0, fpcr" : /* No outputs. */ : "g" (__ctrl_reg | 0x30)); + /* Convert X to an integer, using +Inf rounding. */ + __asm("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); + /* Restore the previous rounding mode. */ + __asm("fmove%.l %0, fpcr" : /* No outputs. */ : "g" (__ctrl_reg)); + return __result; +} + +__m81_inline double +__m81_u(modf)(double __value, double *__iptr) +{ + double __modf_int = __m81_u(floor)(__value); + *__iptr = __modf_int; + return __value - __modf_int; +} + +__m81_inline __CONSTVALUE int +__m81_u(__isinf)(double __value) +{ + /* There is no branch-condition for infinity, + so we must extract and examine the condition codes manually. */ + unsigned long int __fpsr; + __asm("ftst%.x %1\n" + "fmove%.l fpsr, %0" : "=g" (__fpsr) : "f" (__value)); + return (__fpsr & (2 << (3 * 8))) ? (__value < 0 ? -1 : 1) : 0; +} + +__m81_inline __CONSTVALUE int +__m81_u(__isnan)(double __value) +{ + char __result; + __asm("ftst%.x %1\n" + "fsun %0" : "=g" (__result) : "f" (__value)); + return __result; +} + +#endif /* GCC. */ diff --git a/sysdeps/m68k/fpu/acos.c b/sysdeps/m68k/fpu/acos.c new file mode 100644 index 0000000000..d4be88f17c --- /dev/null +++ b/sysdeps/m68k/fpu/acos.c @@ -0,0 +1,32 @@ +/* Copyright (C) 1991, 1994 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +#ifndef FUNC +#define FUNC acos +#endif + + +__CONSTVALUE double +DEFUN(FUNC, (x), double x) +{ + return __m81_u(FUNC)(x); +} diff --git a/sysdeps/m68k/fpu/asin.c b/sysdeps/m68k/fpu/asin.c new file mode 100644 index 0000000000..0e3e58f697 --- /dev/null +++ b/sysdeps/m68k/fpu/asin.c @@ -0,0 +1,2 @@ +#define FUNC asin +#include <acos.c> diff --git a/sysdeps/m68k/fpu/atan.c b/sysdeps/m68k/fpu/atan.c new file mode 100644 index 0000000000..b9d428e170 --- /dev/null +++ b/sysdeps/m68k/fpu/atan.c @@ -0,0 +1,2 @@ +#define FUNC atan +#include <acos.c> diff --git a/sysdeps/m68k/fpu/atan2.c b/sysdeps/m68k/fpu/atan2.c new file mode 100644 index 0000000000..1efdb1f7a6 --- /dev/null +++ b/sysdeps/m68k/fpu/atan2.c @@ -0,0 +1,71 @@ +/* Copyright (C) 1991, 1992, 1994 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <math.h> + +#ifdef __GNUC__ + +__CONSTVALUE double +DEFUN(atan2, (y, x), double y AND double x) +{ + static CONST double one = 1.0, zero = 0.0; + double signx, signy; + double pi, PIo4, PIo2; + + if (__isnan(x)) + return x; + if (__isnan(y)) + return y; + + signy = __copysign(one, y); + signx = __copysign(one, x); + + asm("fmovecr%.x %1, %0" : "=f" (pi) : "i" (0)); + PIo2 = pi / 2; + PIo4 = pi / 4; + + if (y == zero) + return signx == one ? y : __copysign(pi, signy); + + if (x == zero) + return __copysign(PIo2, signy); + + if (__isinf(x)) + { + if (__isinf(y)) + return __copysign(signx == one ? PIo4 : 3 * PIo4, signy); + else + return __copysign(signx == one ? zero : pi, signy); + } + + if (__isinf(y)) + return __copysign(PIo2, signy); + + y = fabs(y); + + if (x < 0.0) + /* X is negative. */ + return __copysign(pi - atan(y / -x), signy); + + return __copysign(atan(y / x), signy); +} + +#else +#include <sysdeps/generic/atan2.c> +#endif diff --git a/sysdeps/m68k/fpu/atanh.c b/sysdeps/m68k/fpu/atanh.c new file mode 100644 index 0000000000..d4636ec035 --- /dev/null +++ b/sysdeps/m68k/fpu/atanh.c @@ -0,0 +1,2 @@ +#define FUNC atanh +#include <acos.c> diff --git a/sysdeps/m68k/fpu/ceil.c b/sysdeps/m68k/fpu/ceil.c new file mode 100644 index 0000000000..b4605e1b29 --- /dev/null +++ b/sysdeps/m68k/fpu/ceil.c @@ -0,0 +1,4 @@ + +#define FUNC ceil + +#include <acos.c> diff --git a/sysdeps/m68k/fpu/cos.c b/sysdeps/m68k/fpu/cos.c new file mode 100644 index 0000000000..fa50130af7 --- /dev/null +++ b/sysdeps/m68k/fpu/cos.c @@ -0,0 +1,2 @@ +#define FUNC cos +#include <acos.c> diff --git a/sysdeps/m68k/fpu/cosh.c b/sysdeps/m68k/fpu/cosh.c new file mode 100644 index 0000000000..78a81943c6 --- /dev/null +++ b/sysdeps/m68k/fpu/cosh.c @@ -0,0 +1,2 @@ +#define FUNC cosh +#include <acos.c> diff --git a/sysdeps/m68k/fpu/drem.c b/sysdeps/m68k/fpu/drem.c new file mode 100644 index 0000000000..16caacfd81 --- /dev/null +++ b/sysdeps/m68k/fpu/drem.c @@ -0,0 +1,31 @@ +/* Copyright (C) 1991, 1992, 1994, 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +#undef drem + +double +DEFUN(__drem, (x, y), double x AND double y) +{ + return ____drem(x, y); +} + +weak_alias (__drem, drem) diff --git a/sysdeps/m68k/fpu/exp.c b/sysdeps/m68k/fpu/exp.c new file mode 100644 index 0000000000..2649d72143 --- /dev/null +++ b/sysdeps/m68k/fpu/exp.c @@ -0,0 +1,3 @@ +#define FUNC exp +#define OP etox +#include <acos.c> diff --git a/sysdeps/m68k/fpu/expm1.c b/sysdeps/m68k/fpu/expm1.c new file mode 100644 index 0000000000..19f1802e56 --- /dev/null +++ b/sysdeps/m68k/fpu/expm1.c @@ -0,0 +1,3 @@ +#define FUNC __expm1 +#define OP expm1 +#include <acos.c> diff --git a/sysdeps/m68k/fpu/fabs.c b/sysdeps/m68k/fpu/fabs.c new file mode 100644 index 0000000000..f9538a599c --- /dev/null +++ b/sysdeps/m68k/fpu/fabs.c @@ -0,0 +1,3 @@ +#define FUNC fabs +#define OP abs +#include <acos.c> diff --git a/sysdeps/m68k/fpu/fl.h b/sysdeps/m68k/fpu/fl.h new file mode 100644 index 0000000000..098e880601 --- /dev/null +++ b/sysdeps/m68k/fpu/fl.h @@ -0,0 +1,41 @@ +/* Floating-point constants for the 68881. + Copyright (C) 1992 Free Software Foundation, Inc. */ + +/* IGNORE($ This is used internally in the library. */ +#include <sysdeps/ieee754/fl.h> +/* ansidecl.m4 here inserts the ieee file. Kludge o rama. + $) ENDCOMMENT INCLUDE($sysdeps/ieee754/fl.h$) STARTCOMMENT */ + +#ifndef __need_HUGE_VAL + +#ifdef __GNUC__ + +#undef FLT_ROUNDS + +/* Interrogate the 68881 to find the current rounding mode. */ + +static __const __inline int +DEFUN_VOID(__flt_rounds) +{ + unsigned long int __fpcr; + __asm("fmove%.l fpcr, %0" : "=g" (__fpcr)); + switch (__fpcr & (1 | 2)) + { + case 0: + return _FLT_ROUNDS_TONEAREST; + case 1: + return _FLT_ROUNDS_TOZERO; + case 2: + return _FLT_ROUNDS_TONEGINF; + case 3: + return _FLT_ROUNDS_TOPOSINF; + default: + return _FLT_ROUNDS_INDETERMINATE; + } +} + +#define FLT_ROUNDS (__flt_rounds()) + +#endif /* GCC. */ + +#endif /* Don't need HUGE_VAL. */ diff --git a/sysdeps/m68k/fpu/floor.c b/sysdeps/m68k/fpu/floor.c new file mode 100644 index 0000000000..92a2ca68bb --- /dev/null +++ b/sysdeps/m68k/fpu/floor.c @@ -0,0 +1,3 @@ +#define FUNC floor +#define OP intrz +#include <acos.c> diff --git a/sysdeps/m68k/fpu/fmod.c b/sysdeps/m68k/fpu/fmod.c new file mode 100644 index 0000000000..9a6c8cd162 --- /dev/null +++ b/sysdeps/m68k/fpu/fmod.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1991, 1994 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +__CONSTVALUE double +DEFUN(fmod, (x, y), double x AND double y) +{ + return __fmod(x, y); +} diff --git a/sysdeps/m68k/fpu/frexp.c b/sysdeps/m68k/fpu/frexp.c new file mode 100644 index 0000000000..de74851de9 --- /dev/null +++ b/sysdeps/m68k/fpu/frexp.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1991 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +double +DEFUN(frexp, (value, expptr), double value AND int *expptr) +{ + return __frexp(value, expptr); +} diff --git a/sysdeps/m68k/fpu/isinf.c b/sysdeps/m68k/fpu/isinf.c new file mode 100644 index 0000000000..ab2cf0bb03 --- /dev/null +++ b/sysdeps/m68k/fpu/isinf.c @@ -0,0 +1,34 @@ +/* Copyright (C) 1991, 1994, 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +#ifndef FUNC +#define FUNC __isinf +#endif + + +int +DEFUN(FUNC, (x), double x) +{ + return __m81_u(FUNC)(x); +} + +weak_alias (__isinf, isinf) diff --git a/sysdeps/m68k/fpu/isnan.c b/sysdeps/m68k/fpu/isnan.c new file mode 100644 index 0000000000..d0984911d2 --- /dev/null +++ b/sysdeps/m68k/fpu/isnan.c @@ -0,0 +1,4 @@ +#define FUNC __isnan +#include <isinf.c> + +weak_alias (__isnan, isnan) diff --git a/sysdeps/m68k/fpu/ldexp.c b/sysdeps/m68k/fpu/ldexp.c new file mode 100644 index 0000000000..ba912805d6 --- /dev/null +++ b/sysdeps/m68k/fpu/ldexp.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1991, 1994 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +__CONSTVALUE double +DEFUN(ldexp, (x, exp), double x AND int exp) +{ + return __ldexp(x, exp); +} diff --git a/sysdeps/m68k/fpu/log.c b/sysdeps/m68k/fpu/log.c new file mode 100644 index 0000000000..4de3346545 --- /dev/null +++ b/sysdeps/m68k/fpu/log.c @@ -0,0 +1,3 @@ +#define FUNC log +#define OP logn +#include <acos.c> diff --git a/sysdeps/m68k/fpu/log10.c b/sysdeps/m68k/fpu/log10.c new file mode 100644 index 0000000000..246b69a364 --- /dev/null +++ b/sysdeps/m68k/fpu/log10.c @@ -0,0 +1,2 @@ +#define FUNC log10 +#include <acos.c> diff --git a/sysdeps/m68k/fpu/log1p.c b/sysdeps/m68k/fpu/log1p.c new file mode 100644 index 0000000000..028783819b --- /dev/null +++ b/sysdeps/m68k/fpu/log1p.c @@ -0,0 +1,2 @@ +#define FUNC log1p +#include <acos.c> diff --git a/sysdeps/m68k/fpu/logb.c b/sysdeps/m68k/fpu/logb.c new file mode 100644 index 0000000000..8619c908c8 --- /dev/null +++ b/sysdeps/m68k/fpu/logb.c @@ -0,0 +1,46 @@ +/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <math.h> + +#ifdef __GNUC__ + +/* Return the base 2 signed integral exponent of X. */ + +double +DEFUN(__logb, (x), double x) +{ + if (__isnan (x)) + return x; + if (__isinf (x)) + return fabs (x); + + if (x == 0.0) + asm ("flog2%.x %0, %0" : "=f" (x) : "0" (x)); + else + asm ("fgetexp%.x %0, %0" : "=f" (x) : "0" (x)); + + return x; +} + +weak_alias (__logb, logb) + +#else +#include <sysdeps/ieee754/logb.c> +#endif diff --git a/sysdeps/m68k/fpu/pow.c b/sysdeps/m68k/fpu/pow.c new file mode 100644 index 0000000000..3360020f1d --- /dev/null +++ b/sysdeps/m68k/fpu/pow.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1991, 1994 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#define __NO_MATH_INLINES +#include <math.h> + +__CONSTVALUE double +DEFUN(pow, (x, y), double x AND double y) +{ + return __pow(x, y); +} diff --git a/sysdeps/m68k/fpu/rint.c b/sysdeps/m68k/fpu/rint.c new file mode 100644 index 0000000000..f83a4e4c3f --- /dev/null +++ b/sysdeps/m68k/fpu/rint.c @@ -0,0 +1,5 @@ +#define FUNC __rint +#define OP intr +#include <acos.c> + +weak_alias (__rint, rint) diff --git a/sysdeps/m68k/fpu/sin.c b/sysdeps/m68k/fpu/sin.c new file mode 100644 index 0000000000..28ac9e50c3 --- /dev/null +++ b/sysdeps/m68k/fpu/sin.c @@ -0,0 +1,2 @@ +#define FUNC sin +#include <acos.c> diff --git a/sysdeps/m68k/fpu/sinh.c b/sysdeps/m68k/fpu/sinh.c new file mode 100644 index 0000000000..fae7c71459 --- /dev/null +++ b/sysdeps/m68k/fpu/sinh.c @@ -0,0 +1,2 @@ +#define FUNC sinh +#include <acos.c> diff --git a/sysdeps/m68k/fpu/sqrt.c b/sysdeps/m68k/fpu/sqrt.c new file mode 100644 index 0000000000..2365b61780 --- /dev/null +++ b/sysdeps/m68k/fpu/sqrt.c @@ -0,0 +1,2 @@ +#define FUNC sqrt +#include <acos.c> diff --git a/sysdeps/m68k/fpu/switch/68881-sw.h b/sysdeps/m68k/fpu/switch/68881-sw.h new file mode 100644 index 0000000000..3d7a3927f5 --- /dev/null +++ b/sysdeps/m68k/fpu/switch/68881-sw.h @@ -0,0 +1,64 @@ +/* Copyright (C) 1991, 1992 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _68881_SWITCH_H + +#define _68881_SWITCH_H 1 +#include <sys/cdefs.h> + +/* This is the format of the data at the code label for a function which + wants to switch depending on whether or not a 68881 is present. + + Initially, `insn' is a `jsr' instruction, and `target' is __68881_switch. + The first time such a function is called, __68881_switch determines whether + or not a 68881 is present, and modifies the function accordingly. + Then `insn' is a `jmp' instruction, and `target' is the value of `fpu' + if there is 68881, or the value of `soft' if not. */ + +struct switch_caller + { + unsigned short int insn; /* The `jsr' or `jmp' instruction. */ + __ptr_t target; /* The target of the instruction. */ + __ptr_t soft; /* The address of the soft function. */ + __ptr_t fpu; /* The address of the 68881 function. */ + }; + +/* These are opcodes (values for `insn', above) for `jmp' and `jsr' + instructions, respectively, to 32-bit absolute addresses. */ +#define JMP 0x4ef9 +#define JSR 0x4eb9 + + +/* Function to determine whether or not a 68881 is available, + and modify its caller (which must be a `struct switch_caller', above, + in data space) to use the appropriate version. */ +extern void EXFUN(__68881_switch, (int __dummy)); + + +/* Define FUNCTION as a `struct switch_caller' which will call + `__FUNCTION_68881' if a 68881 is present, and `__FUNCTION_soft' if not. +#define switching_function(FUNCTION) \ + struct switch_caller FUNCTION = \ + { \ + JSR, (__ptr_t) __68881_switch, \ + __CONCAT(__CONCAT(__,FUNCTION),_soft), \ + __CONCAT(__CONCAT(__,FUNCTION),_68881) \ + } + + +#endif /* 68881-switch.h */ diff --git a/sysdeps/m68k/fpu/switch/Dist b/sysdeps/m68k/fpu/switch/Dist new file mode 100644 index 0000000000..1e00e4cd07 --- /dev/null +++ b/sysdeps/m68k/fpu/switch/Dist @@ -0,0 +1 @@ +68881-sw.h switch.c diff --git a/sysdeps/m68k/fpu/switch/Makefile b/sysdeps/m68k/fpu/switch/Makefile new file mode 100644 index 0000000000..fd8d7c11f4 --- /dev/null +++ b/sysdeps/m68k/fpu/switch/Makefile @@ -0,0 +1,52 @@ +# Copyright (C) 1991, 1992 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., 675 Mass Ave, +# Cambridge, MA 02139, USA. + +ifeq ($(subdir),math) + +sysdep_routines := $(sysdep_routines) switch + +# Find all the sources that have 68881 versions. ++68881-sources := \ + $(notdir $(wildcard $(addprefix $(filter %/fpu,$(sysdirs)),$(sources)))) + +# Sysdep directories other than fpu and fpu/switch (this one). ++non68881-dirs := $(filter-out %/fpu %/fpu/switch,$(+sysdep_dirs)) + +# Get a non-68881 version of the target. ++non68881-version = $(firstword $(wildcard $(addsuffix /$@,$(+non68881-dirs)))) + +# Directory containing 68881 sources. ++68881-dir := $(filter %/fpu,$(+sysdep_dirs)) + +# For all the files that have 68881 versions and don't exist already in +# the source directory (math), automatically make ones that switch between +# 68881 and soft versions. +$(addprefix $(objpfx), \ + $(filter-out $(wildcard $(+68881-sources)),$(+68881-sources))): + (echo '#include <ansidecl.h>' ;\ + echo '#include <68881-sw.h>' ;\ + echo '#define $* __$*_68881' ;\ + echo '#include <$(+68881-dir)/$@>' ;\ + echo '#undef $*' ;\ + echo '#define $* __$*_soft' ;\ + echo '#include <$(non68881-version)>' ;\ + echo '#undef $*' ;\ + echo 'switching_function($*);') > $@-tmp + mv $@-tmp $@ + +endif diff --git a/sysdeps/m68k/fpu/switch/__math.h b/sysdeps/m68k/fpu/switch/__math.h new file mode 100644 index 0000000000..c0f6966981 --- /dev/null +++ b/sysdeps/m68k/fpu/switch/__math.h @@ -0,0 +1 @@ +/* We don't want any inlines when we might not have a 68881. */ diff --git a/sysdeps/m68k/fpu/switch/switch.c b/sysdeps/m68k/fpu/switch/switch.c new file mode 100644 index 0000000000..057bd1509a --- /dev/null +++ b/sysdeps/m68k/fpu/switch/switch.c @@ -0,0 +1,86 @@ +/* Copyright (C) 1991, 1992 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <signal.h> +#include <68881-sw.h> + + +/* The signal that is sent when a 68881 instruction + is executed and there is no 68881. */ +#ifndef TRAPSIG +#define TRAPSIG SIGILL +#endif + +/* Zero if no 68881, one if we have a 68881, or -1 if we don't know yet. */ +static int have_fpu = -1; + + +/* Signal handler for the trap that happens if we don't have a 68881. */ +static void +DEFUN(trap, (sig), int sig) +{ + have_fpu = 0; +} + +/* This function is called by functions that want to switch. + The calling function must be a `struct switch_caller' in data space. + It determines whether a 68881 is present, and modifies its caller + to be a static jump to either the 68881 version or the soft version. + It then returns into the function it has chosen to do the work. */ +void +DEFUN(__68881_switch, (dummy), int dummy) +{ + PTR *return_address_location = &((PTR *) &dummy)[-1]; + struct switch_caller *CONST caller + = (struct switch_caller *) (((short int *) *return_address_location) - 1); + + if (have_fpu < 0) + { + /* Figure out whether or not we have a 68881. */ + __sighandler_t handler = signal (TRAPSIG, trap); + if (handler == SIG_ERR) + /* We can't figure it out, so assume we don't have a 68881. + This assumption will never cause us any problems other than + lost performance, while the reverse assumption could cause + the program to crash. */ + have_fpu = 0; + else + { + /* We set `have_fpu' to nonzero, and then execute a 68881 + no-op instruction. If we have a 68881, this will do nothing. + If we don't have one, this will trap and the signal handler + will clear `have_fpu'. */ + have_fpu = 1; + asm ("fnop"); + + /* Restore the old signal handler. */ + (void) signal (TRAPSIG, handler); + } + } + + /* Modify the caller to be a jump to the appropriate address. */ + caller->insn = JMP; + caller->target = have_fpu ? caller->fpu : caller->soft; + + /* Make the address we will return to be the target we have chosen. + Our return will match the `jsr' done by the caller we have + just modified, and it will be just as if that had instead + been a `jmp' to the new target. */ + *return_address_location = caller->target; +} diff --git a/sysdeps/m68k/fpu/tan.c b/sysdeps/m68k/fpu/tan.c new file mode 100644 index 0000000000..53b3b5342e --- /dev/null +++ b/sysdeps/m68k/fpu/tan.c @@ -0,0 +1,2 @@ +#define FUNC tan +#include <acos.c> diff --git a/sysdeps/m68k/fpu/tanh.c b/sysdeps/m68k/fpu/tanh.c new file mode 100644 index 0000000000..cc6739539a --- /dev/null +++ b/sysdeps/m68k/fpu/tanh.c @@ -0,0 +1,2 @@ +#define FUNC tanh +#include <acos.c> |