Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / microblaze / lib / muldi3.c

diff --git a/qemu/roms/u-boot/arch/microblaze/lib/muldi3.c b/qemu/roms/u-boot/arch/microblaze/lib/muldi3.c
new file mode 100644 (file)
index 0000000..5c1a154
--- /dev/null
+++ b/qemu/roms/u-boot/arch/microblaze/lib/muldi3.c
@@ -0,0 +1,75 @@
+/*
+ * U-boot - muldi3.c contains routines for mult and div
+ *
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/* Generic function got from GNU gcc package, libgcc2.c */
+#ifndef SI_TYPE_SIZE
+#define SI_TYPE_SIZE 32
+#endif
+#define __ll_B (1L << (SI_TYPE_SIZE / 2))
+#define __ll_lowpart(t) ((USItype) (t) % __ll_B)
+#define __ll_highpart(t) ((USItype) (t) / __ll_B)
+#define BITS_PER_UNIT 8
+
+#if !defined(umul_ppmm)
+#define umul_ppmm(w1, w0, u, v)                                                \
+       do {                                                            \
+       USItype __x0, __x1, __x2, __x3;                                 \
+       USItype __ul, __vl, __uh, __vh;                                 \
+                                                                       \
+               __ul = __ll_lowpart(u);                                 \
+               __uh = __ll_highpart(u);                                \
+               __vl = __ll_lowpart(v);                                 \
+               __vh = __ll_highpart(v);                                \
+                                                                       \
+       __x0 = (USItype) __ul * __vl;                                   \
+       __x1 = (USItype) __ul * __vh;                                   \
+       __x2 = (USItype) __uh * __vl;                                   \
+       __x3 = (USItype) __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)
+#endif
+
+#if !defined(__umulsidi3)
+#define __umulsidi3(u, v)                                              \
+       ({DIunion __w;                                                  \
+       umul_ppmm(__w.s.high, __w.s.low, u, v);         \
+       __w.ll; })
+#endif
+
+typedef unsigned int USItype __attribute__ ((mode(SI)));
+typedef int SItype __attribute__ ((mode(SI)));
+typedef int DItype __attribute__ ((mode(DI)));
+typedef int word_type __attribute__ ((mode(__word__)));
+
+struct DIstruct {
+       SItype low, high;
+};
+typedef union {
+       struct DIstruct s;
+       DItype ll;
+} DIunion;
+
+DItype __muldi3(DItype u, DItype v)
+{
+       DIunion w;
+       DIunion uu, vv;
+
+       uu.ll = u, vv.ll = v;
+       /*  panic("kernel panic for __muldi3"); */
+       w.ll = __umulsidi3(uu.s.low, vv.s.low);
+       w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
+                    + (USItype) uu.s.high * (USItype) vv.s.low);
+
+       return w.ll;
+}