[PATCH] mips: implement __udivdi3

[Sachsensolar GmbH]

From: Linus Walleij <linus.walleij at linaro.org>

Squashfs wasn't compiling because the lldiv() directives
turn into __udivdi3 and we are using private libgcc.

After this squashfs compiles for MIPS.

Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>

---
Linus, this is the updated and optimized version of your initial patch.
Sorry for the long delay ;)

 arch/mips/lib/Makefile  |  2 +-
 arch/mips/lib/udivdi3.c | 17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 arch/mips/lib/udivdi3.c

diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
index 9ee1fcb5c7..1621cc9a1f 100644
--- a/arch/mips/lib/Makefile
+++ b/arch/mips/lib/Makefile
@@ -14,4 +14,4 @@ obj-$(CONFIG_CMD_BOOTM) += bootm.o
 obj-$(CONFIG_CMD_GO) += boot.o
 obj-$(CONFIG_SPL_BUILD) += spl.o
 
-lib-$(CONFIG_USE_PRIVATE_LIBGCC) += ashldi3.o ashrdi3.o lshrdi3.o
+lib-$(CONFIG_USE_PRIVATE_LIBGCC) += ashldi3.o ashrdi3.o lshrdi3.o udivdi3.o
diff --git a/arch/mips/lib/udivdi3.c b/arch/mips/lib/udivdi3.c
new file mode 100644
index 0000000000..4d780117cf
--- /dev/null
+++ b/arch/mips/lib/udivdi3.c
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include "libgcc.h"
+
+#if BITS_PER_LONG == 32
+
+#include <div64.h>
+
+long long __udivdi3(long long u, word_type b)
+{
+	long long ret = u;
+
+	__div64_32(&ret, b);
+	return ret;
+}
+
+#endif /* BITS_PER_LONG == 32 */
-- 
2.41.0