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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/m68k
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initial import
Diffstat (limited to 'sysdeps/m68k')
-rw-r--r--sysdeps/m68k/Implies2
-rw-r--r--sysdeps/m68k/Makefile32
-rw-r--r--sysdeps/m68k/__longjmp.c56
-rw-r--r--sysdeps/m68k/bsd-_setjmp.S42
-rw-r--r--sysdeps/m68k/bsd-setjmp.S42
-rw-r--r--sysdeps/m68k/bytesex.h3
-rw-r--r--sysdeps/m68k/ffs.c42
-rw-r--r--sysdeps/m68k/fpu/Makefile11
-rw-r--r--sysdeps/m68k/fpu/__math.h168
-rw-r--r--sysdeps/m68k/fpu/acos.c32
-rw-r--r--sysdeps/m68k/fpu/asin.c2
-rw-r--r--sysdeps/m68k/fpu/atan.c2
-rw-r--r--sysdeps/m68k/fpu/atan2.c71
-rw-r--r--sysdeps/m68k/fpu/atanh.c2
-rw-r--r--sysdeps/m68k/fpu/ceil.c4
-rw-r--r--sysdeps/m68k/fpu/cos.c2
-rw-r--r--sysdeps/m68k/fpu/cosh.c2
-rw-r--r--sysdeps/m68k/fpu/drem.c31
-rw-r--r--sysdeps/m68k/fpu/exp.c3
-rw-r--r--sysdeps/m68k/fpu/expm1.c3
-rw-r--r--sysdeps/m68k/fpu/fabs.c3
-rw-r--r--sysdeps/m68k/fpu/fl.h41
-rw-r--r--sysdeps/m68k/fpu/floor.c3
-rw-r--r--sysdeps/m68k/fpu/fmod.c27
-rw-r--r--sysdeps/m68k/fpu/frexp.c27
-rw-r--r--sysdeps/m68k/fpu/isinf.c34
-rw-r--r--sysdeps/m68k/fpu/isnan.c4
-rw-r--r--sysdeps/m68k/fpu/ldexp.c27
-rw-r--r--sysdeps/m68k/fpu/log.c3
-rw-r--r--sysdeps/m68k/fpu/log10.c2
-rw-r--r--sysdeps/m68k/fpu/log1p.c2
-rw-r--r--sysdeps/m68k/fpu/logb.c46
-rw-r--r--sysdeps/m68k/fpu/pow.c27
-rw-r--r--sysdeps/m68k/fpu/rint.c5
-rw-r--r--sysdeps/m68k/fpu/sin.c2
-rw-r--r--sysdeps/m68k/fpu/sinh.c2
-rw-r--r--sysdeps/m68k/fpu/sqrt.c2
-rw-r--r--sysdeps/m68k/fpu/switch/68881-sw.h64
-rw-r--r--sysdeps/m68k/fpu/switch/Dist1
-rw-r--r--sysdeps/m68k/fpu/switch/Makefile52
-rw-r--r--sysdeps/m68k/fpu/switch/__math.h1
-rw-r--r--sysdeps/m68k/fpu/switch/switch.c86
-rw-r--r--sysdeps/m68k/fpu/tan.c2
-rw-r--r--sysdeps/m68k/fpu/tanh.c2
-rw-r--r--sysdeps/m68k/jmp_buf.h19
-rw-r--r--sysdeps/m68k/m68020/add_n.S76
-rw-r--r--sysdeps/m68k/m68020/addmul_1.S80
-rw-r--r--sysdeps/m68k/m68020/asm-syntax.h105
-rw-r--r--sysdeps/m68k/m68020/mul_1.S87
-rw-r--r--sysdeps/m68k/m68020/sub_n.S76
-rw-r--r--sysdeps/m68k/m68020/submul_1.S80
-rw-r--r--sysdeps/m68k/memcopy.h95
-rw-r--r--sysdeps/m68k/setjmp.c48
53 files changed, 1683 insertions, 0 deletions
diff --git a/sysdeps/m68k/Implies b/sysdeps/m68k/Implies
new file mode 100644
index 0000000000..a67e1c2741
--- /dev/null
+++ b/sysdeps/m68k/Implies
@@ -0,0 +1,2 @@
+# 68k uses IEEE 754 floating point.
+ieee754
diff --git a/sysdeps/m68k/Makefile b/sysdeps/m68k/Makefile
new file mode 100644
index 0000000000..ea0c7d5cbb
--- /dev/null
+++ b/sysdeps/m68k/Makefile
@@ -0,0 +1,32 @@
+# Copyright (C) 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.
+
+# This uses MIT assembler syntax. We have no convenient
+# way to choose a sysdep file based on MIT vs Motorola syntax.
+# No existing m68k ports use Motorola syntax.
+
+crypt := crypt.sun3 # Use crypt/crypt.sun3.S.
+
+# The mpn functions need this. All existing 68k ports use MIT syntax. If
+# a new port wants to use Motorola or Sony syntax, it can redefine this
+# variable.
+ifndef m68k-syntax-flag
+m68k-syntax-flag = -DMIT_SYNTAX
+endif
+
+asm-CPPFLAGS := $(asm-CPPFLAGS) $(m68k-syntax-flag)
diff --git a/sysdeps/m68k/__longjmp.c b/sysdeps/m68k/__longjmp.c
new file mode 100644
index 0000000000..4fc61084a0
--- /dev/null
+++ b/sysdeps/m68k/__longjmp.c
@@ -0,0 +1,56 @@
+/* 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 <setjmp.h>
+#include <stdlib.h>
+
+/* Jump to the position specified by ENV, causing the
+ setjmp call there to return VAL, or 1 if VAL is 0. */
+void
+__longjmp (__jmp_buf env, int val)
+{
+ /* This restores the FP and SP that setjmp's caller had,
+ and puts the return address into A0 and VAL into D0. */
+
+#if defined(__HAVE_68881__) || defined(__HAVE_FPU__)
+ /* Restore the floating-point registers. */
+ asm volatile("fmovem%.x %0, fp0-fp7" :
+ /* No outputs. */ : "g" (env[0].__fpregs[0]) :
+ "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7");
+#endif
+
+ /* Put VAL in D0. */
+ asm volatile("move%.l %0, d0" : /* No outputs. */ :
+ "g" (val == 0 ? 1 : val) : "d0");
+
+ asm volatile(/* Restore the data and address registers. */
+ "movem%.l %0, d1-d7/a0-a7\n"
+ /* Return to setjmp's caller. */
+#ifdef __motorola__
+ "jmp (a0)"
+#else
+ "jmp a0@"
+#endif
+ : /* No outputs. */ : "g" (env[0].__dregs[0])
+ /* We don't bother with the clobbers,
+ because this code always jumps out anyway. */
+ );
+
+ /* This call avoids `volatile function does return' warnings. */
+ abort ();
+}
diff --git a/sysdeps/m68k/bsd-_setjmp.S b/sysdeps/m68k/bsd-_setjmp.S
new file mode 100644
index 0000000000..a0b639306d
--- /dev/null
+++ b/sysdeps/m68k/bsd-_setjmp.S
@@ -0,0 +1,42 @@
+/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. m68k version.
+Copyright (C) 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. */
+
+/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
+ We cannot do it in C because it must be a tail-call, so frame-unwinding
+ in setjmp doesn't clobber the state restored by longjmp. */
+
+#include <sysdep.h>
+
+#ifdef MOTOROLA_SYNTAX
+#define d0 %d0
+#define d1 %d1
+#define PUSH(reg) move.l reg, -(%esp)
+#define POP(reg) move.l (%esp)+, reg
+#else
+#define PUSH(reg) movel reg, sp@-
+#define POP(reg) movel sp@+, reg
+#endif
+
+ENTRY (_setjmp)
+ POP (d0) /* Pop return PC. */
+ POP (d1) /* Pop jmp_buf argument. */
+ PUSH (#0) /* Push second argument of zero. */
+ PUSH (d1) /* Push back first argument. */
+ PUSH (d0) /* Push back return PC. */
+ jmp C_SYMBOL_NAME (__sigsetjmp)
diff --git a/sysdeps/m68k/bsd-setjmp.S b/sysdeps/m68k/bsd-setjmp.S
new file mode 100644
index 0000000000..d218b44279
--- /dev/null
+++ b/sysdeps/m68k/bsd-setjmp.S
@@ -0,0 +1,42 @@
+/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. m68k version.
+Copyright (C) 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. */
+
+/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
+ We cannot do it in C because it must be a tail-call, so frame-unwinding
+ in setjmp doesn't clobber the state restored by longjmp. */
+
+#include <sysdep.h>
+
+#ifdef MOTOROLA_SYNTAX
+#define d0 %d0
+#define d1 %d1
+#define PUSH(reg) move.l reg, -(%esp)
+#define POP(reg) move.l (%esp)+, reg
+#else
+#define PUSH(reg) movel reg, sp@-
+#define POP(reg) movel sp@+, reg
+#endif
+
+ENTRY (setjmp)
+ POP (d0) /* Pop return PC. */
+ POP (d1) /* Pop jmp_buf argument. */
+ PUSH (#1) /* Push second argument of one. */
+ PUSH (d1) /* Push back first argument. */
+ PUSH (d0) /* Push back return PC. */
+ jmp C_SYMBOL_NAME (__sigsetjmp)
diff --git a/sysdeps/m68k/bytesex.h b/sysdeps/m68k/bytesex.h
new file mode 100644
index 0000000000..6f985293f2
--- /dev/null
+++ b/sysdeps/m68k/bytesex.h
@@ -0,0 +1,3 @@
+/* m68k is big-endian. */
+
+#define __BYTE_ORDER __BIG_ENDIAN
diff --git a/sysdeps/m68k/ffs.c b/sysdeps/m68k/ffs.c
new file mode 100644
index 0000000000..d9ec2b1ced
--- /dev/null
+++ b/sysdeps/m68k/ffs.c
@@ -0,0 +1,42 @@
+/* ffs -- find first set bit in a word, counted from least significant end.
+ For mc68020, mc68030, mc68040.
+ Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+ Contributed by Torbjorn Granlund (tege@sics.se).
+
+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 <string.h>
+
+#undef ffs
+
+#if defined (__GNUC__) && defined (__mc68020__)
+
+int
+DEFUN(ffs, (x), int x)
+{
+ int cnt;
+
+ asm("bfffo %1{#0:#0},%0" : "=d" (cnt) : "rm" (x & -x));
+
+ return 32 - cnt;
+}
+
+#else
+
+#include <sysdeps/generic/ffs.c>
+
+#endif
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>
diff --git a/sysdeps/m68k/jmp_buf.h b/sysdeps/m68k/jmp_buf.h
new file mode 100644
index 0000000000..96240f0d8e
--- /dev/null
+++ b/sysdeps/m68k/jmp_buf.h
@@ -0,0 +1,19 @@
+/* Define the machine-dependent type `jmp_buf'. m68k version. */
+
+typedef struct
+ {
+ /* There are eight 4-byte data registers, but D0 is not saved. */
+ long int __dregs[7];
+
+ /* There are six 4-byte address registers, plus the FP and SP. */
+ int *__aregs[6];
+ int * __fp;
+ int * __sp;
+
+#if defined(__HAVE_68881__) || defined(__HAVE_FPU__)
+ /* There are eight floating point registers which
+ are saved in IEEE 96-bit extended format. */
+ char __fpregs[8 * (96 / 8)];
+#endif
+
+ } __jmp_buf[1];
diff --git a/sysdeps/m68k/m68020/add_n.S b/sysdeps/m68k/m68020/add_n.S
new file mode 100644
index 0000000000..ea7a4458ea
--- /dev/null
+++ b/sysdeps/m68k/m68020/add_n.S
@@ -0,0 +1,76 @@
+/* mc68020 __mpn_add_n -- Add two limb vectors of the same length > 0 and store
+ sum in a third limb vector.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+ INPUT PARAMETERS
+ res_ptr (sp + 4)
+ s1_ptr (sp + 8)
+ s2_ptr (sp + 16)
+ size (sp + 12)
+*/
+
+#include "asm-syntax.h"
+
+ TEXT
+ ALIGN
+ GLOBL ___mpn_add_n
+
+LAB(___mpn_add_n)
+/* Save used registers on the stack. */
+ INSN2(move,l ,MEM_PREDEC(sp),d2)
+ INSN2(move,l ,MEM_PREDEC(sp),a2)
+
+/* Copy the arguments to registers. Better use movem? */
+ INSN2(move,l ,a2,MEM_DISP(sp,12))
+ INSN2(move,l ,a0,MEM_DISP(sp,16))
+ INSN2(move,l ,a1,MEM_DISP(sp,20))
+ INSN2(move,l ,d2,MEM_DISP(sp,24))
+
+ INSN2(eor,w ,d2,#1)
+ INSN2(lsr,l ,d2,#1)
+ bcc L1
+ INSN2(subq,l ,d2,#1) /* clears cy as side effect */
+
+LAB(Loop)
+ INSN2(move,l ,d0,MEM_POSTINC(a0))
+ INSN2(move,l ,d1,MEM_POSTINC(a1))
+ INSN2(addx,l ,d0,d1)
+ INSN2(move,l ,MEM_POSTINC(a2),d0)
+LAB(L1) INSN2(move,l ,d0,MEM_POSTINC(a0))
+ INSN2(move,l ,d1,MEM_POSTINC(a1))
+ INSN2(addx,l ,d0,d1)
+ INSN2(move,l ,MEM_POSTINC(a2),d0)
+
+ dbf d2,Loop /* loop until 16 lsb of %4 == -1 */
+ INSN2(subx,l ,d0,d0) /* d0 <= -cy; save cy as 0 or -1 in d0 */
+ INSN2(sub,l ,d2,#0x10000)
+ bcs L2
+ INSN2(add,l ,d0,d0) /* restore cy */
+ bra Loop
+
+LAB(L2)
+ INSN1(neg,l ,d0)
+
+/* Restore used registers from stack frame. */
+ INSN2(move,l ,a2,MEM_POSTINC(sp))
+ INSN2(move,l ,d2,MEM_POSTINC(sp))
+
+ rts
diff --git a/sysdeps/m68k/m68020/addmul_1.S b/sysdeps/m68k/m68020/addmul_1.S
new file mode 100644
index 0000000000..3f244c40b4
--- /dev/null
+++ b/sysdeps/m68k/m68020/addmul_1.S
@@ -0,0 +1,80 @@
+/* mc68020 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
+ the result to a second limb vector.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+ INPUT PARAMETERS
+ res_ptr (sp + 4)
+ s1_ptr (sp + 8)
+ size (sp + 12)
+ s2_limb (sp + 16)
+*/
+
+#include "asm-syntax.h"
+
+ TEXT
+ ALIGN
+ GLOBL ___mpn_addmul_1
+
+LAB(___mpn_addmul_1)
+
+#define res_ptr a0
+#define s1_ptr a1
+#define size d2
+#define s2_limb d4
+
+/* Save used registers on the stack. */
+ INSN2(movem,l ,MEM_PREDEC(sp),d2-d5)
+
+/* Copy the arguments to registers. Better use movem? */
+ INSN2(move,l ,res_ptr,MEM_DISP(sp,20))
+ INSN2(move,l ,s1_ptr,MEM_DISP(sp,24))
+ INSN2(move,l ,size,MEM_DISP(sp,28))
+ INSN2(move,l ,s2_limb,MEM_DISP(sp,32))
+
+ INSN2(eor,w ,size,#1)
+ INSN1(clr,l ,d1)
+ INSN1(clr,l ,d5)
+ INSN2(lsr,l ,size,#1)
+ bcc L1
+ INSN2(subq,l ,size,#1)
+ INSN2(sub,l ,d0,d0) /* (d0,cy) <= (0,0) */
+
+LAB(Loop)
+ INSN2(move,l ,d3,MEM_POSTINC(s1_ptr))
+ INSN2(mulu,l ,d1:d3,s2_limb)
+ INSN2(addx,l ,d3,d0)
+ INSN2(addx,l ,d1,d5)
+ INSN2(add,l ,MEM_POSTINC(res_ptr),d3)
+LAB(L1) INSN2(move,l ,d3,MEM_POSTINC(s1_ptr))
+ INSN2(mulu,l ,d0:d3,s2_limb)
+ INSN2(addx,l ,d3,d1)
+ INSN2(addx,l ,d0,d5)
+ INSN2(add,l ,MEM_POSTINC(res_ptr),d3)
+
+ dbf size,Loop
+ INSN2(addx,l ,d0,d5)
+ INSN2(sub,l ,size,#0x10000)
+ bcc Loop
+
+/* Restore used registers from stack frame. */
+ INSN2(movem,l ,d2-d5,MEM_POSTINC(sp))
+
+ rts
diff --git a/sysdeps/m68k/m68020/asm-syntax.h b/sysdeps/m68k/m68020/asm-syntax.h
new file mode 100644
index 0000000000..394b3ca739
--- /dev/null
+++ b/sysdeps/m68k/m68020/asm-syntax.h
@@ -0,0 +1,105 @@
+/* asm.h -- Definitions for 68k syntax variations.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifdef MIT_SYNTAX
+#define MEM(base)base@
+#define MEM_DISP(base,displacement)base@(displacement)
+#define MEM_PREDEC(memory_base)memory_base@-
+#define MEM_POSTINC(memory_base)memory_base@+
+#ifdef __STDC__
+#define INSN1(mnemonic,size_suffix,dst)mnemonic##size_suffix dst
+#define INSN2(mnemonic,size_suffix,dst,src)mnemonic##size_suffix src,dst
+#else
+#define INSN1(mnemonic,size_suffix,dst)mnemonic/**/size_suffix dst
+#define INSN2(mnemonic,size_suffix,dst,src)mnemonic/**/size_suffix src,dst
+#endif
+#define LAB(label) label:
+#define TEXT .text
+#define ALIGN .even
+#define GLOBL .globl
+#endif
+
+#ifdef SONY_SYNTAX
+#define MEM(base)(base)
+#define MEM_DISP(base,displacement)(displacement,base)
+#define MEM_PREDEC(memory_base)-(memory_base)
+#define MEM_POSTINC(memory_base)(memory_base)+
+#define INSN1(mnemonic,size_suffix,dst)mnemonic.size_suffix dst
+#ifdef __STDC__
+#define INSN2(mnemonic,size_suffix,dst,src)mnemonic.size_suffix src##,dst
+#else
+#define INSN2(mnemonic,size_suffix,dst,src)mnemonic.size_suffix src/**/,dst
+#endif
+#define LAB(label) label:
+#define TEXT .text
+#define ALIGN .even
+#define GLOBL .globl
+#endif
+
+#ifdef MOTOROLA_SYNTAX
+#define MEM(base)(base)
+#define MEM_DISP(base,displacement)(displacement,base)
+#define MEM_PREDEC(memory_base)-(memory_base)
+#define MEM_POSTINC(memory_base)(memory_base)+
+#define INSN1(mnemonic,size_suffix,dst)mnemonic.size_suffix dst
+#ifdef __STDC__
+#define INSN2(mnemonic,size_suffix,dst,src)mnemonic.size_suffix src##,dst
+#else
+#define INSN2(mnemonic,size_suffix,dst,src)mnemonic.size_suffix src/**/,dst
+#endif
+#define LAB(label) label
+#define TEXT
+#define ALIGN
+#define GLOBL XDEF
+#define l L
+#define w W
+#define move MOVE
+#define eor EOR
+#define lsr LSR
+#define add ADD
+#define addx ADDX
+#define addq ADDQ
+#define sub SUB
+#define subx SUBX
+#define subq SUBQ
+#define neg NEG
+#define bcc BCC
+#define bcs BCS
+#define bra BRA
+#define dbf DBF
+#define rts RTS
+#define d0 D0
+#define d1 D1
+#define d2 D2
+#define d3 D3
+#define d4 D4
+#define d5 D5
+#define d6 D6
+#define d7 D7
+#define a0 A0
+#define a1 A1
+#define a2 A2
+#define a3 A3
+#define a4 A4
+#define a5 A5
+#define a6 A6
+#define a7 A7
+#define sp SP
+#endif
diff --git a/sysdeps/m68k/m68020/mul_1.S b/sysdeps/m68k/m68020/mul_1.S
new file mode 100644
index 0000000000..548ca0091b
--- /dev/null
+++ b/sysdeps/m68k/m68020/mul_1.S
@@ -0,0 +1,87 @@
+/* mc68020 __mpn_mul_1 -- Multiply a limb vector with a limb and store
+ the result in a second limb vector.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+ INPUT PARAMETERS
+ res_ptr (sp + 4)
+ s1_ptr (sp + 8)
+ size (sp + 12)
+ s2_limb (sp + 16)
+*/
+
+#include "asm-syntax.h"
+
+ TEXT
+ ALIGN
+ GLOBL ___mpn_mul_1
+
+LAB(___mpn_mul_1)
+
+#define res_ptr a0
+#define s1_ptr a1
+#define size d2
+#define s2_limb d4
+
+/* Save used registers on the stack. */
+ INSN2(movem,l ,MEM_PREDEC(sp),d2-d4)
+#if 0
+ INSN2(move,l ,MEM_PREDEC(sp),d2)
+ INSN2(move,l ,MEM_PREDEC(sp),d3)
+ INSN2(move,l ,MEM_PREDEC(sp),d4)
+#endif
+
+/* Copy the arguments to registers. Better use movem? */
+ INSN2(move,l ,res_ptr,MEM_DISP(sp,16))
+ INSN2(move,l ,s1_ptr,MEM_DISP(sp,20))
+ INSN2(move,l ,size,MEM_DISP(sp,24))
+ INSN2(move,l ,s2_limb,MEM_DISP(sp,28))
+
+ INSN2(eor,w ,size,#1)
+ INSN1(clr,l ,d1)
+ INSN2(lsr,l ,size,#1)
+ bcc L1
+ INSN2(subq,l ,size,#1)
+ INSN2(sub,l ,d0,d0) /* (d0,cy) <= (0,0) */
+
+LAB(Loop)
+ INSN2(move,l ,d3,MEM_POSTINC(s1_ptr))
+ INSN2(mulu,l ,d1:d3,s2_limb)
+ INSN2(addx,l ,d3,d0)
+ INSN2(move,l ,MEM_POSTINC(res_ptr),d3)
+LAB(L1) INSN2(move,l ,d3,MEM_POSTINC(s1_ptr))
+ INSN2(mulu,l ,d0:d3,s2_limb)
+ INSN2(addx,l ,d3,d1)
+ INSN2(move,l ,MEM_POSTINC(res_ptr),d3)
+
+ dbf size,Loop
+ INSN1(clr,l ,d3)
+ INSN2(addx,l ,d0,d3)
+ INSN2(sub,l ,size,#0x10000)
+ bcc Loop
+
+/* Restore used registers from stack frame. */
+ INSN2(movem,l ,d2-d4,MEM_POSTINC(sp))
+#if 0
+ INSN2(move,l ,d4,MEM_POSTINC(sp))
+ INSN2(move,l ,d3,MEM_POSTINC(sp))
+ INSN2(move,l ,d2,MEM_POSTINC(sp))
+#endif
+ rts
diff --git a/sysdeps/m68k/m68020/sub_n.S b/sysdeps/m68k/m68020/sub_n.S
new file mode 100644
index 0000000000..19f0ec1568
--- /dev/null
+++ b/sysdeps/m68k/m68020/sub_n.S
@@ -0,0 +1,76 @@
+/* mc68020 __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
+ store difference in a third limb vector.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+ INPUT PARAMETERS
+ res_ptr (sp + 4)
+ s1_ptr (sp + 8)
+ s2_ptr (sp + 16)
+ size (sp + 12)
+*/
+
+#include "asm-syntax.h"
+
+ TEXT
+ ALIGN
+ GLOBL ___mpn_sub_n
+
+LAB(___mpn_sub_n)
+/* Save used registers on the stack. */
+ INSN2(move,l ,MEM_PREDEC(sp),d2)
+ INSN2(move,l ,MEM_PREDEC(sp),a2)
+
+/* Copy the arguments to registers. Better use movem? */
+ INSN2(move,l ,a2,MEM_DISP(sp,12))
+ INSN2(move,l ,a0,MEM_DISP(sp,16))
+ INSN2(move,l ,a1,MEM_DISP(sp,20))
+ INSN2(move,l ,d2,MEM_DISP(sp,24))
+
+ INSN2(eor,w ,d2,#1)
+ INSN2(lsr,l ,d2,#1)
+ bcc L1
+ INSN2(subq,l ,d2,#1) /* clears cy as side effect */
+
+LAB(Loop)
+ INSN2(move,l ,d0,MEM_POSTINC(a0))
+ INSN2(move,l ,d1,MEM_POSTINC(a1))
+ INSN2(subx,l ,d0,d1)
+ INSN2(move,l ,MEM_POSTINC(a2),d0)
+LAB(L1) INSN2(move,l ,d0,MEM_POSTINC(a0))
+ INSN2(move,l ,d1,MEM_POSTINC(a1))
+ INSN2(subx,l ,d0,d1)
+ INSN2(move,l ,MEM_POSTINC(a2),d0)
+
+ dbf d2,Loop /* loop until 16 lsb of %4 == -1 */
+ INSN2(subx,l ,d0,d0) /* d0 <= -cy; save cy as 0 or -1 in d0 */
+ INSN2(sub,l ,d2,#0x10000)
+ bcs L2
+ INSN2(add,l ,d0,d0) /* restore cy */
+ bra Loop
+
+LAB(L2)
+ INSN1(neg,l ,d0)
+
+/* Restore used registers from stack frame. */
+ INSN2(move,l ,a2,MEM_POSTINC(sp))
+ INSN2(move,l ,d2,MEM_POSTINC(sp))
+
+ rts
diff --git a/sysdeps/m68k/m68020/submul_1.S b/sysdeps/m68k/m68020/submul_1.S
new file mode 100644
index 0000000000..ef7f39de7a
--- /dev/null
+++ b/sysdeps/m68k/m68020/submul_1.S
@@ -0,0 +1,80 @@
+/* mc68020 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
+ the result from a second limb vector.
+
+Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+ INPUT PARAMETERS
+ res_ptr (sp + 4)
+ s1_ptr (sp + 8)
+ size (sp + 12)
+ s2_limb (sp + 16)
+*/
+
+#include "asm-syntax.h"
+
+ TEXT
+ ALIGN
+ GLOBL ___mpn_submul_1
+
+LAB(___mpn_submul_1)
+
+#define res_ptr a0
+#define s1_ptr a1
+#define size d2
+#define s2_limb d4
+
+/* Save used registers on the stack. */
+ INSN2(movem,l ,MEM_PREDEC(sp),d2-d5)
+
+/* Copy the arguments to registers. Better use movem? */
+ INSN2(move,l ,res_ptr,MEM_DISP(sp,20))
+ INSN2(move,l ,s1_ptr,MEM_DISP(sp,24))
+ INSN2(move,l ,size,MEM_DISP(sp,28))
+ INSN2(move,l ,s2_limb,MEM_DISP(sp,32))
+
+ INSN2(eor,w ,size,#1)
+ INSN1(clr,l ,d1)
+ INSN1(clr,l ,d5)
+ INSN2(lsr,l ,size,#1)
+ bcc L1
+ INSN2(subq,l ,size,#1)
+ INSN2(sub,l ,d0,d0) /* (d0,cy) <= (0,0) */
+
+LAB(Loop)
+ INSN2(move,l ,d3,MEM_POSTINC(s1_ptr))
+ INSN2(mulu,l ,d1:d3,s2_limb)
+ INSN2(addx,l ,d3,d0)
+ INSN2(addx,l ,d1,d5)
+ INSN2(sub,l ,MEM_POSTINC(res_ptr),d3)
+LAB(L1) INSN2(move,l ,d3,MEM_POSTINC(s1_ptr))
+ INSN2(mulu,l ,d0:d3,s2_limb)
+ INSN2(addx,l ,d3,d1)
+ INSN2(addx,l ,d0,d5)
+ INSN2(sub,l ,MEM_POSTINC(res_ptr),d3)
+
+ dbf size,Loop
+ INSN2(addx,l ,d0,d5)
+ INSN2(sub,l ,size,#0x10000)
+ bcc Loop
+
+/* Restore used registers from stack frame. */
+ INSN2(movem,l ,d2-d5,MEM_POSTINC(sp))
+
+ rts
diff --git a/sysdeps/m68k/memcopy.h b/sysdeps/m68k/memcopy.h
new file mode 100644
index 0000000000..862e1b8a7f
--- /dev/null
+++ b/sysdeps/m68k/memcopy.h
@@ -0,0 +1,95 @@
+/* memcopy.h -- definitions for memory copy functions. Motorola 68020 version.
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ Contributed by Torbjorn Granlund (tege@sics.se).
+
+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 <sysdeps/generic/memcopy.h>
+
+#if defined(__mc68020__) || defined(mc68020)
+
+#undef OP_T_THRES
+#define OP_T_THRES 16
+
+/* WORD_COPY_FWD and WORD_COPY_BWD are not symmetric on the 68020,
+ because of its weird instruction overlap characteristics. */
+
+#undef WORD_COPY_FWD
+#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \
+ do \
+ { \
+ size_t __nwords = (nbytes) / sizeof (op_t); \
+ size_t __nblocks = __nwords / 8 + 1; \
+ dst_bp -= (8 - __nwords % 8) * sizeof (op_t); \
+ src_bp -= (8 - __nwords % 8) * sizeof (op_t); \
+ switch (__nwords % 8) \
+ do \
+ { \
+ ((op_t *) dst_bp)[0] = ((op_t *) src_bp)[0]; \
+ case 7: \
+ ((op_t *) dst_bp)[1] = ((op_t *) src_bp)[1]; \
+ case 6: \
+ ((op_t *) dst_bp)[2] = ((op_t *) src_bp)[2]; \
+ case 5: \
+ ((op_t *) dst_bp)[3] = ((op_t *) src_bp)[3]; \
+ case 4: \
+ ((op_t *) dst_bp)[4] = ((op_t *) src_bp)[4]; \
+ case 3: \
+ ((op_t *) dst_bp)[5] = ((op_t *) src_bp)[5]; \
+ case 2: \
+ ((op_t *) dst_bp)[6] = ((op_t *) src_bp)[6]; \
+ case 1: \
+ ((op_t *) dst_bp)[7] = ((op_t *) src_bp)[7]; \
+ case 0: \
+ src_bp += 32; \
+ dst_bp += 32; \
+ __nblocks--; \
+ } \
+ while (__nblocks != 0); \
+ (nbytes_left) = (nbytes) % sizeof (op_t); \
+ } while (0)
+
+#undef WORD_COPY_BWD
+#define WORD_COPY_BWD(dst_ep, src_ep, nbytes_left, nbytes) \
+ do \
+ { \
+ size_t __nblocks = (nbytes) / 32 + 1; \
+ switch ((nbytes) / sizeof (op_t) % 8) \
+ do \
+ { \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 7: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 6: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 5: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 4: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 3: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 2: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 1: \
+ *--((op_t *) dst_ep) = *--((op_t *) src_ep); \
+ case 0: \
+ __nblocks--; \
+ } \
+ while (__nblocks != 0); \
+ (nbytes_left) = (nbytes) % sizeof (op_t); \
+ } while (0)
+
+#endif
diff --git a/sysdeps/m68k/setjmp.c b/sysdeps/m68k/setjmp.c
new file mode 100644
index 0000000000..853977eab9
--- /dev/null
+++ b/sysdeps/m68k/setjmp.c
@@ -0,0 +1,48 @@
+/* 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 <setjmp.h>
+
+/* Save the current program position in ENV and return 0. */
+int
+__sigsetjmp (jmp_buf env, int savemask)
+{
+ /* Save data registers D1 through D7. */
+ asm volatile ("movem%.l d1-d7, %0" : : "m" (env[0].__jmpbuf[0].__dregs[0]));
+
+ /* Save return address in place of register A0. */
+ env[0].__jmpbuf[0].__aregs[0] = ((void **) &env)[-1];
+
+ /* Save address registers A1 through A5. */
+ asm volatile ("movem%.l a1-a5, %0" : : "m" (env[0].__jmpbuf[0].__aregs[1]));
+
+ /* Save caller's FP, not our own. */
+ env[0].__jmpbuf[0].__fp = ((void **) &env)[-2];
+
+ /* Save caller's SP, not our own. */
+ env[0].__jmpbuf[0].__sp = (void *) &env;
+
+#if defined(__HAVE_68881__) || defined(__HAVE_FPU__)
+ /* Save floating-point (68881) registers FP0 through FP7. */
+ asm volatile ("fmovem%.x fp0-fp7, %0"
+ : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
+#endif
+
+ /* Save the signal mask if requested. */
+ return __sigjmp_save (env, savemask);
+}