Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / include / div64.h

diff --git a/qemu/roms/u-boot/include/div64.h b/qemu/roms/u-boot/include/div64.h
new file mode 100644 (file)
index 0000000..d833144
--- /dev/null
+++ b/qemu/roms/u-boot/include/div64.h
@@ -0,0 +1,49 @@
+#ifndef _ASM_GENERIC_DIV64_H
+#define _ASM_GENERIC_DIV64_H
+/*
+ * Copyright (C) 2003 Bernardo Innocenti <bernie@develer.com>
+ * Based on former asm-ppc/div64.h and asm-m68knommu/div64.h
+ *
+ * The semantics of do_div() are:
+ *
+ * uint32_t do_div(uint64_t *n, uint32_t base)
+ * {
+ *     uint32_t remainder = *n % base;
+ *     *n = *n / base;
+ *     return remainder;
+ * }
+ *
+ * NOTE: macro parameter n is evaluated multiple times,
+ *       beware of side effects!
+ */
+
+#include <linux/types.h>
+
+extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
+
+/* The unnecessary pointer compare is there
+ * to check for type safety (n must be 64bit)
+ */
+# define do_div(n,base) ({                             \
+       uint32_t __base = (base);                       \
+       uint32_t __rem;                                 \
+       (void)(((typeof((n)) *)0) == ((uint64_t *)0));  \
+       if (((n) >> 32) == 0) {                 \
+               __rem = (uint32_t)(n) % __base;         \
+               (n) = (uint32_t)(n) / __base;           \
+       } else                                          \
+               __rem = __div64_32(&(n), __base);       \
+       __rem;                                          \
+ })
+
+/* Wrapper for do_div(). Doesn't modify dividend and returns
+ * the result, not reminder.
+ */
+static inline uint64_t lldiv(uint64_t dividend, uint32_t divisor)
+{
+       uint64_t __res = dividend;
+       do_div(__res, divisor);
+       return(__res);
+}
+
+#endif /* _ASM_GENERIC_DIV64_H */