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| author | Aaron Durbin <adurbin@chromium.org> | 2015-10-01 14:20:57 -0500 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2015-10-02 12:15:47 +0000 |
| commit | 7ffcc0be63bc8f253c9d4d971ef75be19038963e (patch) | |
| tree | 61069d1eb61fc61309e2654941240913af4eb4bc /src/commonlib | |
| parent | 04ebf598de6d8b8152c99ebe181de084e0b5b242 (diff) | |
| download | coreboot-7ffcc0be63bc8f253c9d4d971ef75be19038963e.tar.xz | |
commonlib/helpers.h: handle interaction with other environments
There are compiler settings and interactions with other
header files that should be handled. First use __typeof__
instead of typeof because 'std' modes don't accept typeof.
The __typeof__ variant works equally well on clang. The
other change is to guard the helper macros so as not to
trigger redefinition errors.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built cbfstool including commonlib/helpers.h
Change-Id: I58890477cb17df14a9fa8b7af752a7c70769cf36
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11773
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/commonlib')
| -rw-r--r-- | src/commonlib/include/commonlib/helpers.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/commonlib/include/commonlib/helpers.h b/src/commonlib/include/commonlib/helpers.h index 6ad767e219..0e337c9ce7 100644 --- a/src/commonlib/include/commonlib/helpers.h +++ b/src/commonlib/include/commonlib/helpers.h @@ -4,14 +4,18 @@ #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) -#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1UL) +#define ALIGN(x,a) __ALIGN_MASK(x,(__typeof__(x))(a)-1UL) #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) #define ALIGN_UP(x,a) ALIGN((x),(a)) -#define ALIGN_DOWN(x,a) ((x) & ~((typeof(x))(a)-1UL)) -#define IS_ALIGNED(x,a) (((x) & ((typeof(x))(a)-1UL)) == 0) +#define ALIGN_DOWN(x,a) ((x) & ~((__typeof__(x))(a)-1UL)) +#define IS_ALIGNED(x,a) (((x) & ((__typeof__(x))(a)-1UL)) == 0) +#ifndef MIN #define MIN(a,b) ((a) < (b) ? (a) : (b)) +#endif +#ifndef MAX #define MAX(a,b) ((a) > (b) ? (a) : (b)) +#endif #define ABS(a) (((a) < 0) ? (-(a)) : (a)) #define CEIL_DIV(a, b) (((a) + (b) - 1) / (b)) #define IS_POWER_OF_2(x) (((x) & ((x) - 1)) == 0) @@ -27,7 +31,9 @@ #define MHz (1000 * KHz) #define GHz (1000 * MHz) +#ifndef offsetof #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) +#endif #if !defined(__clang__) #define check_member(structure, member, offset) _Static_assert( \ @@ -45,7 +51,7 @@ * */ #define container_of(ptr, type, member) ({ \ - const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) #endif /* COMMONLIB_HELPERS_H */ |