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| author | Alex James <theracermaster@gmail.com> | 2019-10-22 18:32:22 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-11-05 15:00:44 +0000 |
| commit | 8119841ec0da8ab088ed23961d3a3e4b25551f18 (patch) | |
| tree | 5095b63f286837e73ffe35a5473f5941bb2088fa /src/commonlib | |
| parent | ddcfcb8ebc64d71717407607323fd18e29fa651e (diff) | |
| download | coreboot-8119841ec0da8ab088ed23961d3a3e4b25551f18.tar.xz | |
commonlib: Use __builtin_offsetof with supported compilers
Use __builtin_offsetof (which is treated as a constant expression) with
Clang & GCC. This also allows check_member to work with Clang 9.
Signed-off-by: Alex James <theracermaster@gmail.com>
Change-Id: I8b5cb4110c13ee42114ecf65932d7f1e5636210e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36249
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/commonlib')
| -rw-r--r-- | src/commonlib/include/commonlib/helpers.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/commonlib/include/commonlib/helpers.h b/src/commonlib/include/commonlib/helpers.h index f3b71d7016..ca3b3c58f9 100644 --- a/src/commonlib/include/commonlib/helpers.h +++ b/src/commonlib/include/commonlib/helpers.h @@ -108,16 +108,16 @@ #define GHz (1000 * MHz) #ifndef offsetof +#ifdef __ROMCC__ #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) +#else +#define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER) +#endif #endif -#if !defined(__clang__) #define check_member(structure, member, offset) _Static_assert( \ offsetof(struct structure, member) == offset, \ "`struct " #structure "` offset for `" #member "` is not " #offset) -#else -#define check_member(structure, member, offset) -#endif /** * container_of - cast a member of a structure out to the containing structure |