diff options
Diffstat (limited to 'scripts/gendwarfksyms/examples/kabi_ex.h')
| -rw-r--r-- | scripts/gendwarfksyms/examples/kabi_ex.h | 101 |
1 files changed, 99 insertions, 2 deletions
diff --git a/scripts/gendwarfksyms/examples/kabi_ex.h b/scripts/gendwarfksyms/examples/kabi_ex.h index 1736e0f65208..785b211d9c58 100644 --- a/scripts/gendwarfksyms/examples/kabi_ex.h +++ b/scripts/gendwarfksyms/examples/kabi_ex.h @@ -21,6 +21,12 @@ * ./gendwarfksyms --stable --dump-dies \ * examples/kabi_ex.o 2>&1 >/dev/null | \ * FileCheck examples/kabi_ex.h --check-prefix=STABLE + + * $ nm examples/kabi_ex.o | awk '{ print $NF }' | \ + * ./gendwarfksyms --stable --dump-versions \ + * examples/kabi_ex.o 2>&1 >/dev/null | \ + * sort | \ + * FileCheck examples/kabi_ex.h --check-prefix=VERSIONS */ #ifndef __KABI_EX_H__ @@ -170,7 +176,7 @@ struct ex2a { /* * STABLE: variable structure_type ex2a { * STABLE-NEXT: member base_type int byte_size(4) encoding(5) a data_member_location(0) , - * STABLE-NEXT: member base_type [[ULONG:long unsigned int|unsigned long]] byte_size(8) encoding(7) b data_member_location(8) + * STABLE-NEXT: member base_type [[ULONG]] byte_size(8) encoding(7) b data_member_location(8) * STABLE-NEXT: member base_type int byte_size(4) encoding(5) c data_member_location(16) , * STABLE-NEXT: member base_type [[ULONG]] byte_size(8) encoding(7) d data_member_location(24) * STABLE-NEXT: } byte_size(32) @@ -227,7 +233,7 @@ struct ex3a { /* * STABLE: variable structure_type ex3a { - * STABLE-NEXT: member base_type [[ULONG:long unsigned int|unsigned long]] byte_size(8) encoding(7) a data_member_location(0) + * STABLE-NEXT: member base_type [[ULONG]] byte_size(8) encoding(7) a data_member_location(0) * STABLE-NEXT: member base_type [[ULONG]] byte_size(8) encoding(7) unused data_member_location(8) * STABLE-NEXT: } byte_size(16) */ @@ -260,4 +266,95 @@ _Static_assert(sizeof(struct ex3a) == sizeof(struct ex3c), "ex3a size doesn't ma * STABLE-NEXT: } byte_size(16) */ +/* + * Example: An ignored field added to an end of a partially opaque struct, + * while keeping the byte_size attribute unchanged. + */ + +struct ex4a { + unsigned long a; + KABI_IGNORE(0, unsigned long b); +}; + +/* + * This may be safe if the structure allocation is managed by the core kernel + * and the layout remains unchanged except for appended new members. + */ +KABI_BYTE_SIZE(ex4a, 8); + +/* + * STABLE: variable structure_type ex4a { + * STABLE-NEXT: member base_type [[ULONG]] byte_size(8) encoding(7) a data_member_location(0) + * STABLE-NEXT: } byte_size(8) + */ + +/* + * Example: A type string override. + */ + +struct ex5a { + unsigned long a; +}; + +/* + * This may be safe if the structure is fully opaque to modules, even though + * its definition has inadvertently become part of the ABI. + */ +KABI_TYPE_STRING( + "s#ex5a", + "structure_type ex5a { member pointer_type { s#ex4a } byte_size(8) p data_member_location(0) } byte_size(8)"); + +/* + * Make sure the fully expanded type string includes ex4a. + * + * VERSIONS: ex5a variable structure_type ex5a { + * VERSIONS-SAME: member pointer_type { + * VERSIONS-SAME: structure_type ex4a { + * VERSIONS-SAME: member base_type [[ULONG:long unsigned int|unsigned long]] byte_size(8) encoding(7) a data_member_location(0) + * VERSIONS-SAME: } byte_size(8) + * VERSIONS-SAME: } byte_size(8) p data_member_location(0) + * VERSIONS-SAME: } byte_size(8) + */ + +/* + * Example: A type string definition for a non-existent type. + */ + +struct ex5b { + unsigned long a; +}; + +/* Replace the type string for struct ex5b */ +KABI_TYPE_STRING( + "s#ex5b", + "structure_type ex5b { member pointer_type { s#ex5c } byte_size(8) p data_member_location(0) } byte_size(8)"); + +/* Define a type string for a non-existent struct ex5c */ +KABI_TYPE_STRING( + "s#ex5c", + "structure_type ex5c { member base_type int byte_size(4) encoding(5) n data_member_location(0) } byte_size(8)"); + +/* + * Make sure the fully expanded type string includes the definition for ex5c. + * + * VERSIONS: ex5b variable structure_type ex5b { + * VERSIONS-SAME: member pointer_type { + * VERSIONS-SAME: structure_type ex5c { + * VERSIONS-SAME: member base_type int byte_size(4) encoding(5) n data_member_location(0) + * VERSIONS-SAME: } byte_size(8) + * VERSIONS-SAME: } byte_size(8) p data_member_location(0) + * VERSIONS-SAME: } byte_size(8) + */ + +/* + * Example: A type string override for a symbol. + */ + +KABI_TYPE_STRING("ex6a", "variable s#ex5c"); + +/* + * VERSIONS: ex6a variable structure_type ex5c { + * VERSIONS-SAME: member base_type int byte_size(4) encoding(5) n data_member_location(0) + * VERSIONS-SAME: } byte_size(8) + */ #endif /* __KABI_EX_H__ */ |