Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 107 insertions, 0 deletions

diff --git a/include/math-emu/op-8.h b/include/math-emu/op-8.h
new file mode 100644
index 00000000000..8b8c05eb828
--- /dev/null
+++ b/include/math-emu/op-8.h
@@ -0,0 +1,107 @@
+/* Software floating-point emulation.
+   Basic eight-word fraction declaration and manipulation.
+   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) 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_OP_8_H__
+#define __MATH_EMU_OP_8_H__
+
+/* We need just a few things from here for op-4, if we ever need some
+   other macros, they can be added. */
+#define _FP_FRAC_DECL_8(X)      _FP_W_TYPE X##_f[8]
+#define _FP_FRAC_HIGH_8(X)      (X##_f[7])
+#define _FP_FRAC_LOW_8(X)       (X##_f[0])
+#define _FP_FRAC_WORD_8(X,w)    (X##_f[w])
+
+#define _FP_FRAC_SLL_8(X,N)                                             \
+  do {                                                                  \
+    _FP_I_TYPE _up, _down, _skip, _i;                                   \
+    _skip = (N) / _FP_W_TYPE_SIZE;                                      \
+    _up = (N) % _FP_W_TYPE_SIZE;                                        \
+    _down = _FP_W_TYPE_SIZE - _up;                                      \
+    if (!_up)                                                           \
+      for (_i = 7; _i >= _skip; --_i)                                   \
+        X##_f[_i] = X##_f[_i-_skip];                                    \
+    else                                                                \
+      {                                                                 \
+        for (_i = 7; _i > _skip; --_i)                                  \
+          X##_f[_i] = X##_f[_i-_skip] << _up                            \
+                      | X##_f[_i-_skip-1] >> _down;                     \
+        X##_f[_i--] = X##_f[0] << _up;                                  \
+      }                                                                 \
+    for (; _i >= 0; --_i)                                               \
+      X##_f[_i] = 0;                                                    \
+  } while (0)
+
+#define _FP_FRAC_SRL_8(X,N)                                             \
+  do {                                                                  \
+    _FP_I_TYPE _up, _down, _skip, _i;                                   \
+    _skip = (N) / _FP_W_TYPE_SIZE;                                      \
+    _down = (N) % _FP_W_TYPE_SIZE;                                      \
+    _up = _FP_W_TYPE_SIZE - _down;                                      \
+    if (!_down)                                                         \
+      for (_i = 0; _i <= 7-_skip; ++_i)                                 \
+        X##_f[_i] = X##_f[_i+_skip];                                    \
+    else                                                                \
+      {                                                                 \
+        for (_i = 0; _i < 7-_skip; ++_i)                                \
+          X##_f[_i] = X##_f[_i+_skip] >> _down                          \
+                      | X##_f[_i+_skip+1] << _up;                       \
+        X##_f[_i++] = X##_f[7] >> _down;                                \
+      }                                                                 \
+    for (; _i < 8; ++_i)                                                \
+      X##_f[_i] = 0;                                                    \
+  } while (0)
+
+
+/* Right shift with sticky-lsb. 
+ * What this actually means is that we do a standard right-shift,
+ * but that if any of the bits that fall off the right hand side
+ * were one then we always set the LSbit.
+ */
+#define _FP_FRAC_SRS_8(X,N,size)                                        \
+  do {                                                                  \
+    _FP_I_TYPE _up, _down, _skip, _i;                                   \
+    _FP_W_TYPE _s;                                                      \
+    _skip = (N) / _FP_W_TYPE_SIZE;                                      \
+    _down = (N) % _FP_W_TYPE_SIZE;                                      \
+    _up = _FP_W_TYPE_SIZE - _down;                                      \
+    for (_s = _i = 0; _i < _skip; ++_i)                                 \
+      _s |= X##_f[_i];                                                  \
+    _s |= X##_f[_i] << _up;                                             \
+/* s is now != 0 if we want to set the LSbit */                         \
+    if (!_down)                                                         \
+      for (_i = 0; _i <= 7-_skip; ++_i)                                 \
+        X##_f[_i] = X##_f[_i+_skip];                                    \
+    else                                                                \
+      {                                                                 \
+        for (_i = 0; _i < 7-_skip; ++_i)                                \
+          X##_f[_i] = X##_f[_i+_skip] >> _down                          \
+                      | X##_f[_i+_skip+1] << _up;                       \
+        X##_f[_i++] = X##_f[7] >> _down;                                \
+      }                                                                 \
+    for (; _i < 8; ++_i)                                                \
+      X##_f[_i] = 0;                                                    \
+    /* don't fix the LSB until the very end when we're sure f[0] is stable */   \
+    X##_f[0] |= (_s != 0);                                              \
+  } while (0)
+
+#endif