[PATCH v2 3/3] test: test bit shift operations on RISC-V

[Heinrich Schuchardt]

Add unit tests for library functions __ashldi3() and __lshrdi3).

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
v2:
	new patch
---
 test/lib/Makefile |  2 ++
 test/lib/bitops.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 test/lib/bitops.c

diff --git a/test/lib/Makefile b/test/lib/Makefile
index 7e7922fe3b..ade934dab7 100644
--- a/test/lib/Makefile
+++ b/test/lib/Makefile
@@ -2,7 +2,9 @@
 #
 # (C) Copyright 2018
 # Mario Six, Guntermann & Drunck GmbH, mario.six at gdsys.cc
+
 ifeq ($(CONFIG_SPL_BUILD),)
+obj-$(CONFIG_RISCV) += bitops.o
 obj-y += cmd_ut_lib.o
 obj-y += abuf.o
 obj-$(CONFIG_EFI_LOADER) += efi_device_path.o
diff --git a/test/lib/bitops.c b/test/lib/bitops.c
new file mode 100644
index 0000000000..14813c34b5
--- /dev/null
+++ b/test/lib/bitops.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <test/lib.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+long __ashldi3(long a, int b);
+long __lshrdi3(long a, int b);
+
+/**
+ * lib_ashldi3() - unit test for __ashldi3()
+ *
+ * @uts:	unit test state
+ * Return:	0 = success, 1 = failure
+ */
+static int lib_ashldi3(struct unit_test_state *uts)
+{
+	long actual, expected, val;
+	int bits = 4;
+
+	switch (sizeof(long)) {
+	case 8:
+		val = (long)0xf6fa765251b9a6c7;
+		expected = (long)0x6fa765251b9a6c70;
+		break;
+	case 4:
+		val = 0x51b9a6c7;
+		expected = 0x1b9a6c70;
+		break;
+	default:
+		ut_assert(false);
+	}
+
+	actual = __ashldi3(val, bits);
+	ut_asserteq(expected, actual);
+
+	return 0;
+}
+LIB_TEST(lib_ashldi3, 0);
+
+/**
+ * lib_lshrdi3() - unit test for __lshrdi3()
+ *
+ * @uts:	unit test state
+ * Return:	0 = success, 1 = failure
+ */
+static int lib_lshrdi3(struct unit_test_state *uts)
+{
+	long actual, expected, val;
+	int bits = 4;
+
+	switch (sizeof(long)) {
+	case 8:
+		val = (long)0xf6fa765251b9a6c7;
+		expected = (long)0x0f6fa765251b9a6c;
+		break;
+	case 4:
+		val = 0x51b9a6c7;
+		expected = 0x051b9a6c;
+		break;
+	default:
+		ut_assert(false);
+	}
+
+	actual = __lshrdi3(val, bits);
+	ut_asserteq(expected, actual);
+
+	return 0;
+}
+LIB_TEST(lib_lshrdi3, 0);
-- 
2.37.2