ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/mips/include/asm/div64.h b/marvell/linux/arch/mips/include/asm/div64.h
new file mode 100644
index 0000000..ceece76
--- /dev/null
+++ b/marvell/linux/arch/mips/include/asm/div64.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2000, 2004, 2021 Maciej W. Rozycki
+ * Copyright (C) 2003, 07 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_DIV64_H
+#define __ASM_DIV64_H
+
+#include <asm/bitsperlong.h>
+
+#if BITS_PER_LONG == 32
+
+/*
+ * No traps on overflows for any of these...
+ */
+
+#define do_div64_32(res, high, low, base) ({ \
+ unsigned long __cf, __tmp, __tmp2, __i; \
+ unsigned long __quot32, __mod32; \
+ \
+ __asm__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " .set noreorder \n" \
+ " move %2, $0 \n" \
+ " move %3, $0 \n" \
+ " b 1f \n" \
+ " li %4, 0x21 \n" \
+ "0: \n" \
+ " sll $1, %0, 0x1 \n" \
+ " srl %3, %0, 0x1f \n" \
+ " or %0, $1, %5 \n" \
+ " sll %1, %1, 0x1 \n" \
+ " sll %2, %2, 0x1 \n" \
+ "1: \n" \
+ " bnez %3, 2f \n" \
+ " sltu %5, %0, %z6 \n" \
+ " bnez %5, 3f \n" \
+ "2: \n" \
+ " addiu %4, %4, -1 \n" \
+ " subu %0, %0, %z6 \n" \
+ " addiu %2, %2, 1 \n" \
+ "3: \n" \
+ " bnez %4, 0b \n" \
+ " srl %5, %1, 0x1f \n" \
+ " .set pop" \
+ : "=&r" (__mod32), "=&r" (__tmp), \
+ "=&r" (__quot32), "=&r" (__cf), \
+ "=&r" (__i), "=&r" (__tmp2) \
+ : "Jr" (base), "0" (high), "1" (low)); \
+ \
+ (res) = __quot32; \
+ __mod32; \
+})
+
+#define __div64_32(n, base) ({ \
+ unsigned long __upper, __low, __high, __radix; \
+ unsigned long long __quot; \
+ unsigned long long __div; \
+ unsigned long __mod; \
+ \
+ __div = (*n); \
+ __radix = (base); \
+ \
+ __high = __div >> 32; \
+ __low = __div; \
+ \
+ if (__high < __radix) { \
+ __upper = __high; \
+ __high = 0; \
+ } else { \
+ __upper = __high % __radix; \
+ __high /= __radix; \
+ } \
+ \
+ __mod = do_div64_32(__low, __upper, __low, __radix); \
+ \
+ __quot = __high; \
+ __quot = __quot << 32 | __low; \
+ (*n) = __quot; \
+ __mod; \
+})
+
+#endif /* BITS_PER_LONG == 32 */
+
+#include <asm-generic/div64.h>
+
+#endif /* __ASM_DIV64_H */