diff options
Diffstat (limited to '')
-rw-r--r-- | tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c | 173 |
1 files changed, 154 insertions, 19 deletions
diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c index 35c512818a56..79276fbe454a 100644 --- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c +++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c @@ -9,7 +9,7 @@ /* ----- START-EXPECTED-OUTPUT ----- */ struct padded_implicitly { int a; - long int b; + long b; char c; }; @@ -19,7 +19,7 @@ struct padded_implicitly { /* *struct padded_explicitly { * int a; - * int: 32; + * long: 0; * int b; *}; * @@ -28,41 +28,28 @@ struct padded_implicitly { struct padded_explicitly { int a; - int: 1; /* algo will explicitly pad with full 32 bits here */ + int: 1; /* algo will emit aligning `long: 0;` here */ int b; }; /* ----- START-EXPECTED-OUTPUT ----- */ -/* - *struct padded_a_lot { - * int a; - * long: 32; - * long: 64; - * long: 64; - * int b; - *}; - * - */ -/* ------ END-EXPECTED-OUTPUT ------ */ - struct padded_a_lot { int a; - /* 32 bit of implicit padding here, which algo will make explicit */ long: 64; long: 64; int b; }; +/* ------ END-EXPECTED-OUTPUT ------ */ + /* ----- START-EXPECTED-OUTPUT ----- */ /* *struct padded_cache_line { * int a; - * long: 32; * long: 64; * long: 64; * long: 64; * int b; - * long: 32; * long: 64; * long: 64; * long: 64; @@ -85,7 +72,7 @@ struct padded_cache_line { *struct zone { * int a; * short b; - * short: 16; + * long: 0; * struct zone_padding __pad__; *}; * @@ -102,12 +89,160 @@ struct zone { struct zone_padding __pad__; }; +/* ----- START-EXPECTED-OUTPUT ----- */ +struct padding_wo_named_members { + long: 64; + long: 64; +}; + +struct padding_weird_1 { + int a; + long: 64; + short: 16; + short b; +}; + +/* ------ END-EXPECTED-OUTPUT ------ */ + +/* ----- START-EXPECTED-OUTPUT ----- */ +/* + *struct padding_weird_2 { + * long: 56; + * char a; + * long: 56; + * char b; + * char: 8; + *}; + * + */ +/* ------ END-EXPECTED-OUTPUT ------ */ +struct padding_weird_2 { + int: 32; /* these paddings will be collapsed into `long: 56;` */ + short: 16; + char: 8; + char a; + int: 32; /* these paddings will be collapsed into `long: 56;` */ + short: 16; + char: 8; + char b; + char: 8; +}; + +/* ----- START-EXPECTED-OUTPUT ----- */ +struct exact_1byte { + char x; +}; + +struct padded_1byte { + char: 8; +}; + +struct exact_2bytes { + short x; +}; + +struct padded_2bytes { + short: 16; +}; + +struct exact_4bytes { + int x; +}; + +struct padded_4bytes { + int: 32; +}; + +struct exact_8bytes { + long x; +}; + +struct padded_8bytes { + long: 64; +}; + +struct ff_periodic_effect { + int: 32; + short magnitude; + long: 0; + short phase; + long: 0; + int: 32; + int custom_len; + short *custom_data; +}; + +struct ib_wc { + long: 64; + long: 64; + int: 32; + int byte_len; + void *qp; + union {} ex; + long: 64; + int slid; + int wc_flags; + long: 64; + char smac[6]; + long: 0; + char network_hdr_type; +}; + +struct acpi_object_method { + long: 64; + char: 8; + char type; + short reference_count; + char flags; + short: 0; + char: 8; + char sync_level; + long: 64; + void *node; + void *aml_start; + union {} dispatch; + long: 64; + int aml_length; +}; + +struct nested_unpacked { + int x; +}; + +struct nested_packed { + struct nested_unpacked a; + char c; +} __attribute__((packed)); + +struct outer_mixed_but_unpacked { + struct nested_packed b1; + short a1; + struct nested_packed b2; +}; + +/* ------ END-EXPECTED-OUTPUT ------ */ + int f(struct { struct padded_implicitly _1; struct padded_explicitly _2; struct padded_a_lot _3; struct padded_cache_line _4; struct zone _5; + struct padding_wo_named_members _6; + struct padding_weird_1 _7; + struct padding_weird_2 _8; + struct exact_1byte _100; + struct padded_1byte _101; + struct exact_2bytes _102; + struct padded_2bytes _103; + struct exact_4bytes _104; + struct padded_4bytes _105; + struct exact_8bytes _106; + struct padded_8bytes _107; + struct ff_periodic_effect _200; + struct ib_wc _201; + struct acpi_object_method _202; + struct outer_mixed_but_unpacked _203; } *_) { return 0; |