diff options
| -rw-r--r-- | include/common.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h index 65c4082d53..fc9e46c56e 100644 --- a/include/common.h +++ b/include/common.h @@ -232,6 +232,33 @@ enum ec_error_list { #endif /* + * Weak symbol markers + * + * These macros are used to annotate weak definitions, their declarations, and + * overriding definitions. + * + * __override_proto: declarations + * __override: definitions which take precedence + * __overridable: default (weak) definitions + * + * For example, in foo.h: + * __override_proto void foo(void); + * + * and in foo.c: + * __overridable void foo(void) { + * ... + * } + * + * and in board.c: + * __override void foo(void) { + * ... + * } + */ +#define __override_proto +#define __override +#define __overridable __attribute__((weak)) + +/* * Mark functions that collide with stdlib so they can be hidden when linking * against libraries that require stdlib. HIDE_EC_STDLIB should be defined * before including common.h from code that links to cstdlib. |