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Signed-off-by: Alan Maguire --- .../bpf/prog_tests/btf_dedup_split.c | 116 ++++++++++++++++++ 1 file changed, 116 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c b/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c index 9d6161151593..5c15a6b7f4fb 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c @@ -554,6 +554,120 @@ static void test_split_module(void) btf__free(vmlinux_btf); } +static void test_split_loc(void) +{ + struct btf *btf1, *btf2; + int err; + + btf1 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf1, "empty_main_btf")) + return; + + btf__set_pointer_size(btf1, 8); /* enforce 64-bit arch */ + + + btf__add_int(btf1, "long", 8, BTF_INT_SIGNED); /* [1] long */ + btf__add_ptr(btf1, 1); /* [2] ptr to long */ + btf__add_func_proto(btf1, 1); /* [3] long (*)(long, long *); */ + btf__add_func_param(btf1, "p1", 1); + btf__add_func_param(btf1, "p2", 2); + btf__add_func(btf1, "foo", BTF_FUNC_STATIC, 3); /* [4] long foo(long, long *); */ + btf__add_loc_param(btf1, 8, BTF_LOC_PARAM_CONST); + btf__add_loc_param_value(btf1, 3735928559); + btf__add_loc_param_value(btf1, 4277009102); /* [5] loc value */ + btf__add_loc_param(btf1, 8, BTF_LOC_PARAM_REG); /* [6] loc reg 1 */ + btf__add_loc_param_value(btf1, 1); + btf__add_loc_proto(btf1); /* [7] loc proto */ + btf__add_loc_proto_param(btf1, 5); /* param value */ + btf__add_loc_proto_param(btf1, 6); /* param reg 1 */ + + VALIDATE_RAW_BTF( + btf1, + "[1] INT 'long' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1", + "[3] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" + "\t'p1' type_id=1\n" + "\t'p2' type_id=2", + "[4] FUNC 'foo' type_id=3 linkage=static", + "[5] LOC_PARAM '(anon)' size=8 flags=0x2 vlen=2\n" + "\tvalue=3735928559\n" + "\tvalue=4277009102", + "[6] LOC_PARAM '(anon)' size=8 flags=0x8 vlen=1\n" + "\tvalue=1", + "[7] LOC_PROTO '(anon)' vlen=2\n" + "\ttype_id=5\n" + "\ttype_id=6"); + + btf2 = btf__new_empty_split(btf1); + if (!ASSERT_OK_PTR(btf2, "empty_split_btf")) + goto cleanup; + btf__add_loc_param(btf2, 8, BTF_LOC_PARAM_REG); + btf__add_loc_param_value(btf2, 1); /* [8] loc reg 1 */ + btf__add_loc_proto(btf2); /* [9] loc proto */ + btf__add_loc_proto_param(btf2, 5); /* param value */ + btf__add_loc_proto_param(btf2, 8); /* param reg 1 */ + btf__add_locsec(btf2, "inline.text"); /* [10] locsec "inline.text" */ + /* add duplicate locsec */ + btf__add_locsec_loc(btf2, 4, 9, 128); + btf__add_locsec(btf2, "inline.text"); /* [11] locsec "inline.text" */ + btf__add_locsec_loc(btf2, 4, 9, 128); + + VALIDATE_RAW_BTF( + btf2, + "[1] INT 'long' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1", + "[3] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" + "\t'p1' type_id=1\n" + "\t'p2' type_id=2", + "[4] FUNC 'foo' type_id=3 linkage=static", + "[5] LOC_PARAM '(anon)' size=8 flags=0x2 vlen=2\n" + "\tvalue=3735928559\n" + "\tvalue=4277009102", + "[6] LOC_PARAM '(anon)' size=8 flags=0x8 vlen=1\n" + "\tvalue=1", + "[7] LOC_PROTO '(anon)' vlen=2\n" + "\ttype_id=5\n" + "\ttype_id=6", + "[8] LOC_PARAM '(anon)' size=8 flags=0x8 vlen=1\n" + "\tvalue=1", + "[9] LOC_PROTO '(anon)' vlen=2\n" + "\ttype_id=5\n" + "\ttype_id=8", + "[10] LOCSEC 'inline.text' vlen=1\n" + "\tfunc_type_id=4 loc_proto_type_id=9 offset=128", + "[11] LOCSEC 'inline.text' vlen=1\n" + "\tfunc_type_id=4 loc_proto_type_id=9 offset=128"); + + err = btf__dedup(btf2, NULL); + if (!ASSERT_OK(err, "btf_dedup")) + goto cleanup; + + VALIDATE_RAW_BTF( + btf2, + "[1] INT 'long' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1", + "[3] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" + "\t'p1' type_id=1\n" + "\t'p2' type_id=2", + "[4] FUNC 'foo' type_id=3 linkage=static", + "[5] LOC_PARAM '(anon)' size=8 flags=0x2 vlen=2\n" + "\tvalue=3735928559\n" + "\tvalue=4277009102", + "[6] LOC_PARAM '(anon)' size=8 flags=0x8 vlen=1\n" + "\tvalue=1", + "[7] LOC_PROTO '(anon)' vlen=2\n" + "\ttype_id=5\n" + "\ttype_id=6", + "[8] LOCSEC 'inline.text' vlen=1\n" + "\tfunc_type_id=4 loc_proto_type_id=7 offset=128", + "[9] LOCSEC 'inline.text' vlen=1\n" + "\tfunc_type_id=4 loc_proto_type_id=7 offset=128"); + +cleanup: + btf__free(btf2); + btf__free(btf1); +} + void test_btf_dedup_split() { if (test__start_subtest("split_simple")) @@ -566,4 +680,6 @@ void test_btf_dedup_split() test_split_dup_struct_in_cu(); if (test__start_subtest("split_module")) test_split_module(); + if (test__start_subtest("split_loc")) + test_split_loc(); } -- 2.43.5