1 files changed, 181 insertions, 0 deletions

diff --git a/include/math-emu/soft-fp.h b/include/math-emu/soft-fp.h
new file mode 100644
index 000000000000..d02eb64a865b
--- /dev/null
+++ b/include/math-emu/soft-fp.h
@@ -0,0 +1,181 @@
+/* Software floating-point emulation.
+   Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson (rth@cygnus.com),
+                  Jakub Jelinek (jj@ultra.linux.cz),
+                  David S. Miller (davem@redhat.com) and
+                  Peter Maydell (pmaydell@chiark.greenend.org.uk).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef __MATH_EMU_SOFT_FP_H__
+#define __MATH_EMU_SOFT_FP_H__
+
+#include <asm/sfp-machine.h>
+
+/* Allow sfp-machine to have its own byte order definitions. */
+#ifndef __BYTE_ORDER
+#include <endian.h>
+#endif
+
+#define _FP_WORKBITS            3
+#define _FP_WORK_LSB            ((_FP_W_TYPE)1 << 3)
+#define _FP_WORK_ROUND          ((_FP_W_TYPE)1 << 2)
+#define _FP_WORK_GUARD          ((_FP_W_TYPE)1 << 1)
+#define _FP_WORK_STICKY         ((_FP_W_TYPE)1 << 0)
+
+#ifndef FP_RND_NEAREST
+# define FP_RND_NEAREST         0
+# define FP_RND_ZERO            1
+# define FP_RND_PINF            2
+# define FP_RND_MINF            3
+#ifndef FP_ROUNDMODE
+# define FP_ROUNDMODE           FP_RND_NEAREST
+#endif
+#endif
+
+/* By default don't care about exceptions. */
+#ifndef FP_EX_INVALID
+#define FP_EX_INVALID           0
+#endif
+#ifndef FP_EX_OVERFLOW
+#define FP_EX_OVERFLOW          0
+#endif
+#ifndef FP_EX_UNDERFLOW
+#define FP_EX_UNDERFLOW         
+#endif
+#ifndef FP_EX_DIVZERO
+#define FP_EX_DIVZERO           0
+#endif
+#ifndef FP_EX_INEXACT
+#define FP_EX_INEXACT           0
+#endif
+#ifndef FP_EX_DENORM
+#define FP_EX_DENORM            0
+#endif
+
+#ifdef _FP_DECL_EX
+#define FP_DECL_EX                                      \
+  int _fex = 0;                                         \
+  _FP_DECL_EX
+#else
+#define FP_DECL_EX int _fex = 0
+#endif
+  
+#ifndef FP_INIT_ROUNDMODE
+#define FP_INIT_ROUNDMODE do {} while (0)
+#endif
+
+#ifndef FP_HANDLE_EXCEPTIONS
+#define FP_HANDLE_EXCEPTIONS do {} while (0)
+#endif
+
+/* By default we never flush denormal input operands to signed zero. */
+#ifndef FP_DENORM_ZERO
+#define FP_DENORM_ZERO 0
+#endif
+
+#ifndef FP_INHIBIT_RESULTS
+/* By default we write the results always.
+ * sfp-machine may override this and e.g.
+ * check if some exceptions are unmasked
+ * and inhibit it in such a case.
+ */
+#define FP_INHIBIT_RESULTS 0
+#endif
+
+#define FP_SET_EXCEPTION(ex)                            \
+  _fex |= (ex)
+  
+#define FP_UNSET_EXCEPTION(ex)                          \
+  _fex &= ~(ex)
+
+#define FP_CLEAR_EXCEPTIONS                             \
+  _fex = 0
+
+#define _FP_ROUND_NEAREST(wc, X)                        \
+do {                                                    \
+    if ((_FP_FRAC_LOW_##wc(X) & 15) != _FP_WORK_ROUND)  \
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND);            \
+} while (0)
+
+#define _FP_ROUND_ZERO(wc, X)           0
+
+#define _FP_ROUND_PINF(wc, X)                           \
+do {                                                    \
+    if (!X##_s && (_FP_FRAC_LOW_##wc(X) & 7))           \
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB);              \
+} while (0)
+
+#define _FP_ROUND_MINF(wc, X)                           \
+do {                                                    \
+    if (X##_s && (_FP_FRAC_LOW_##wc(X) & 7))            \
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB);              \
+} while (0)
+
+#define _FP_ROUND(wc, X)                        \
+do {                                            \
+        if (_FP_FRAC_LOW_##wc(X) & 7)           \
+          FP_SET_EXCEPTION(FP_EX_INEXACT);      \
+        switch (FP_ROUNDMODE)                   \
+        {                                       \
+          case FP_RND_NEAREST:                  \
+            _FP_ROUND_NEAREST(wc,X);            \
+            break;                              \
+          case FP_RND_ZERO:                     \
+            _FP_ROUND_ZERO(wc,X);               \
+            break;                              \
+          case FP_RND_PINF:                     \
+            _FP_ROUND_PINF(wc,X);               \
+            break;                              \
+          case FP_RND_MINF:                     \
+            _FP_ROUND_MINF(wc,X);               \
+            break;                              \
+        }                                       \
+} while (0)
+
+#define FP_CLS_NORMAL           0
+#define FP_CLS_ZERO             1
+#define FP_CLS_INF              2
+#define FP_CLS_NAN              3
+
+#define _FP_CLS_COMBINE(x,y)    (((x) << 2) | (y))
+
+#include <math-emu/op-1.h>
+#include <math-emu/op-2.h>
+#include <math-emu/op-4.h>
+#include <math-emu/op-8.h>
+#include <math-emu/op-common.h>
+
+/* Sigh.  Silly things longlong.h needs.  */
+#define UWtype          _FP_W_TYPE
+#define W_TYPE_SIZE     _FP_W_TYPE_SIZE
+
+typedef int SItype __attribute__((mode(SI)));
+typedef int DItype __attribute__((mode(DI)));
+typedef unsigned int USItype __attribute__((mode(SI)));
+typedef unsigned int UDItype __attribute__((mode(DI)));
+#if _FP_W_TYPE_SIZE == 32
+typedef unsigned int UHWtype __attribute__((mode(HI)));
+#elif _FP_W_TYPE_SIZE == 64
+typedef USItype UHWtype;
+#endif
+
+#ifndef umul_ppmm
+#include <stdlib/longlong.h>
+#endif
+
+#endif /* __MATH_EMU_SOFT_FP_H__ */