Add tests for big-endian ints

2 files changed, 43 insertions, 0 deletions

diff --git a/prog/encodingexec_test.go b/prog/encodingexec_test.go
index e166e8ae8..207543705 100644
--- a/prog/encodingexec_test.go
+++ b/prog/encodingexec_test.go
@@ -129,6 +129,28 @@ func TestSerializeForExec(t *testing.T) {
 				instrEOF,
 			},
 		},
+		{
+			"syz_test$end0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42, 0x42})",
+			[]uint64{
+				instrCopyin, dataOffset + 0, argConst, 1, 0x42,
+				instrCopyin, dataOffset + 1, argConst, 2, 0x4200,
+				instrCopyin, dataOffset + 3, argConst, 4, 0x42000000,
+				instrCopyin, dataOffset + 7, argConst, 8, 0x4200000000000000,
+				instrCopyin, dataOffset + 15, argConst, 8, 0x4200000000000000,
+				callID("syz_test$end0"), 1, argConst, ptrSize, dataOffset,
+				instrEOF,
+			},
+		},
+		{
+			"syz_test$end1(&(0x7f0000000000)={0xe, 0x42, 0x1})",
+			[]uint64{
+				instrCopyin, dataOffset + 0, argConst, 2, 0x0e00,
+				instrCopyin, dataOffset + 2, argConst, 4, 0x42000000,
+				instrCopyin, dataOffset + 6, argConst, 8, 0x0100000000000000,
+				callID("syz_test$end1"), 1, argConst, ptrSize, dataOffset,
+				instrEOF,
+			},
+		},
 	}
 
 	for i, test := range tests {
diff --git a/sys/test.txt b/sys/test.txt
index bf66d83aa..a4381c1ad 100644
--- a/sys/test.txt
+++ b/sys/test.txt
@@ -166,3 +166,24 @@ syz_length_large_struct {
 	f1	int64
 	f2	array[int32, 8]
 }
+
+# Big endian.
+
+syz_test$end0(a0 ptr[in, syz_end_int_struct])
+syz_test$end1(a0 ptr[in, syz_end_var_struct])
+
+syz_end_flags = 0, 1
+
+syz_end_int_struct {
+	f0	int8
+	f1	int16be
+	f2	int32be
+	f3	int64be
+	f4	intptrbe
+} [packed]
+
+syz_end_var_struct {
+	f0	len[parent, int16be]
+	f1	const[0x42, int32be]
+	f2	flags[syz_end_flags, int64be]
+} [packed]