Commit a17553dd authored by Alan Maguire's avatar Alan Maguire Committed by Andrii Nakryiko
Browse files

selftests/bpf: Add __int128-specific tests for typed data dump 



Add tests for __int128 display for platforms that support it.
__int128s are dumped as hex values.

Signed-off-by: default avatarAlan Maguire <alan.maguire@oracle.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/1626770993-11073-3-git-send-email-alan.maguire@oracle.com
parent a1d3cc3c

tools/testing/selftests/bpf/prog_tests/btf_dump.c

+17 −0
Original line number Diff line number Diff line
@@ -327,6 +327,14 @@ static int btf_dump_data(struct btf *btf, struct btf_dump *d, 
static void test_btf_dump_int_data(struct btf *btf, struct btf_dump *d,

				   char *str)

{

#ifdef __SIZEOF_INT128__

	__int128 i = 0xffffffffffffffff;



	/* this dance is required because we cannot directly initialize

	 * a 128-bit value to anything larger than a 64-bit value.

	 */

	i = (i << 64) | (i - 1);

#endif

	/* simple int */

	TEST_BTF_DUMP_DATA_C(btf, d, NULL, str, int, BTF_F_COMPACT, 1234);

	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, BTF_F_COMPACT | BTF_F_NONAME,
@@ -348,6 +356,15 @@ static void test_btf_dump_int_data(struct btf *btf, struct btf_dump *d, 
	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, 0, "(int)-4567", -4567);



	TEST_BTF_DUMP_DATA_OVER(btf, d, NULL, str, int, sizeof(int)-1, "", 1);



#ifdef __SIZEOF_INT128__

	TEST_BTF_DUMP_DATA(btf, d, NULL, str, __int128, BTF_F_COMPACT,

			   "(__int128)0xffffffffffffffff",

			   0xffffffffffffffff);

	ASSERT_OK(btf_dump_data(btf, d, "__int128", NULL, 0, &i, 16, str,

				"(__int128)0xfffffffffffffffffffffffffffffffe"),

		  "dump __int128");

#endif

}



static void test_btf_dump_float_data(struct btf *btf, struct btf_dump *d,