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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-08-07 14:39:59 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-08-07 14:43:49 -0700 |
| commit | d698f9dbdbed036ef28a96cd34a1b5d7fe58750e (patch) | |
| tree | 5d0831c3929b34b89e9eb44d5415040765302f16 /tools/testing/selftests/bpf/prog_tests/core_reloc.c | |
| parent | selftests/bpf: add CO-RE relocs modifiers/typedef tests (diff) | |
| download | wireguard-linux-d698f9dbdbed036ef28a96cd34a1b5d7fe58750e.tar.xz wireguard-linux-d698f9dbdbed036ef28a96cd34a1b5d7fe58750e.zip | |
selftests/bpf: add CO-RE relocs ptr-as-array tests
Add test validating correct relocation handling for cases where pointer
to something is used as an array. E.g.:
int *ptr = ...;
int x = ptr[42];
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/core_reloc.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/core_reloc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 9dadf462a951..2cfe0bdc53f8 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -129,6 +129,22 @@ .output_len = sizeof(struct core_reloc_mods_output), \ } +#define PTR_AS_ARR_CASE(name) { \ + .case_name = #name, \ + .bpf_obj_file = "test_core_reloc_ptr_as_arr.o", \ + .btf_src_file = "btf__core_reloc_" #name ".o", \ + .input = (const char *)&(struct core_reloc_##name []){ \ + { .a = 1 }, \ + { .a = 2 }, \ + { .a = 3 }, \ + }, \ + .input_len = 3 * sizeof(struct core_reloc_##name), \ + .output = STRUCT_TO_CHAR_PTR(core_reloc_ptr_as_arr) { \ + .a = 3, \ + }, \ + .output_len = sizeof(struct core_reloc_ptr_as_arr), \ +} + struct core_reloc_test_case { const char *case_name; const char *bpf_obj_file; @@ -200,6 +216,10 @@ static struct core_reloc_test_case test_cases[] = { MODS_CASE(mods), MODS_CASE(mods___mod_swap), MODS_CASE(mods___typedefs), + + /* handling "ptr is an array" semantics */ + PTR_AS_ARR_CASE(ptr_as_arr), + PTR_AS_ARR_CASE(ptr_as_arr___diff_sz), }; struct data { |