bpf/prog_tests/btf_endian.c

1 // SPDX-License-Identifier: GPL-2.0
11 	enum btf_endianness endian = BTF_LITTLE_ENDIAN;  in test_btf_endian()  local
13 	enum btf_endianness endian = BTF_BIG_ENDIAN;  in test_btf_endian()
17 	enum btf_endianness swap_endian = 1 - endian;  in test_btf_endian()
25 	/* Load BTF in native endianness */  in test_btf_endian()
30 	ASSERT_EQ(btf__endianness(btf), endian, "endian");  in test_btf_endian()
32 	ASSERT_EQ(btf__endianness(btf), swap_endian, "endian");  in test_btf_endian()
34 	/* Get raw BTF data in non-native endianness... */  in test_btf_endian()
44 	ASSERT_EQ(btf__endianness(swap_btf), swap_endian, "endian");  in test_btf_endian()
51 	/* both raw data should be identical (with non-native endianness) */  in test_btf_endian()
56 	ASSERT_EQ(bswap_16(hdr->magic), BTF_MAGIC, "btf_magic_swapped");  in test_btf_endian()
59 	/* swap it back to native endianness */  in test_btf_endian()
60 	btf__set_endianness(swap_btf, endian);  in test_btf_endian()
65 	/* now header should have native BTF_MAGIC */  in test_btf_endian()
67 	ASSERT_EQ(hdr->magic, BTF_MAGIC, "btf_magic_native");  in test_btf_endian()
82 	/* and re-open swapped raw data again */  in test_btf_endian()
87 	ASSERT_EQ(btf__endianness(swap_btf), swap_endian, "endian");  in test_btf_endian()
90 	/* the type should appear as if it was stored in native endianness */  in test_btf_endian()
92 	ASSERT_STREQ(btf__str_by_offset(swap_btf, t->name_off), "some_var", "var_name");  in test_btf_endian()
93 	ASSERT_EQ(btf_var(t)->linkage, BTF_VAR_GLOBAL_ALLOCATED, "var_linkage");  in test_btf_endian()
94 	ASSERT_EQ(t->type, 1, "var_type");  in test_btf_endian()