Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / openbios / libgcc / multi3.c

diff --git a/qemu/roms/openbios/libgcc/multi3.c b/qemu/roms/openbios/libgcc/multi3.c
new file mode 100644 (file)
index 0000000..e7186be
--- /dev/null
+++ b/qemu/roms/openbios/libgcc/multi3.c
@@ -0,0 +1,83 @@
+/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and
+                          gcc-2.7.2.3/longlong.h which is: */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include "libgcc.h"
+
+#define BITS_PER_UNIT 8
+#define DI_TYPE_SIZE 64
+
+#define __BITS4 (DI_TYPE_SIZE / 4)
+#define __ll_B (1L << (DI_TYPE_SIZE / 2))
+#define __ll_lowpart(t) ((UDItype) (t) % __ll_B)
+#define __ll_highpart(t) ((UDItype) (t) / __ll_B)
+
+#define umul_ppmm(w1, w0, u, v)                                                \
+  do {                                                                 \
+    UDItype __x0, __x1, __x2, __x3;                                    \
+    UDItype __ul, __vl, __uh, __vh;                                    \
+                                                                       \
+    __ul = __ll_lowpart (u);                                           \
+    __uh = __ll_highpart (u);                                          \
+    __vl = __ll_lowpart (v);                                           \
+    __vh = __ll_highpart (v);                                          \
+                                                                       \
+    __x0 = (UDItype) __ul * __vl;                                      \
+    __x1 = (UDItype) __ul * __vh;                                      \
+    __x2 = (UDItype) __uh * __vl;                                      \
+    __x3 = (UDItype) __uh * __vh;                                      \
+                                                                       \
+    __x1 += __ll_highpart (__x0);/* this can't give carry */           \
+    __x1 += __x2;              /* but this indeed can */               \
+    if (__x1 < __x2)           /* did we get it? */                    \
+      __x3 += __ll_B;          /* yes, add it in the proper pos. */    \
+                                                                       \
+    (w1) = __x3 + __ll_highpart (__x1);                                        \
+    (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0);         \
+  } while (0)
+
+#define __umulsidi3(u, v) \
+  ({TIunion __w;                                                       \
+    umul_ppmm (__w.s.high, __w.s.low, u, v);                           \
+    __w.ll; })
+
+struct TIstruct {DItype high, low;};
+
+typedef union
+{
+  struct TIstruct s;
+  TItype ll;
+} TIunion;
+
+TItype
+__multi3 (TItype u, TItype v)
+{
+  TIunion w;
+  TIunion uu, vv;
+
+  uu.ll = u,
+  vv.ll = v;
+
+  w.ll = __umulsidi3 (uu.s.low, vv.s.low);
+  w.s.high += ((UDItype) uu.s.low * (UDItype) vv.s.high
+              + (UDItype) uu.s.high * (UDItype) vv.s.low);
+
+  return w.ll;
+}