diff options
| author | Julius Werner <jwerner@chromium.org> | 2019-03-27 14:41:56 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-04-10 10:43:27 +0000 |
| commit | 18c1b6b240b675c877b8bd731dfd58f5723d0c57 (patch) | |
| tree | 430b903f8e227d41a83a11ef98d30d17f97b0a41 /payloads/libpayload/include | |
| parent | f5b76fe9e9dc179cc0e29f724d132e530f88b401 (diff) | |
| download | coreboot-18c1b6b240b675c877b8bd731dfd58f5723d0c57.tar.xz | |
libpayload: limits.h: Provide reliable definitions for all XXX_MAX/MIN
Our current limits.h only provides (U)INT_MAX constants. This patch adds
most others expected by POSIX. Since some of these may be different
depending on architecture (e.g. 'long' is 32-bit on x86 and 64-bit on
arm64), provide a definition that will automatically figure out the
right value for the data model the compiler is using (as long as it's
using two's complement for signed integers, which I think we can assume
these days).
Change-Id: I1124a41279abd4f53d208270e392e590ca8eaada
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32085
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'payloads/libpayload/include')
| -rw-r--r-- | payloads/libpayload/include/limits.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/payloads/libpayload/include/limits.h b/payloads/libpayload/include/limits.h index 2fecf239b0..4238e0e90b 100644 --- a/payloads/libpayload/include/limits.h +++ b/payloads/libpayload/include/limits.h @@ -40,7 +40,20 @@ # endif #endif -#define UINT_MAX (unsigned int)0xffffffff -#define INT_MAX (unsigned int)0x7fffffff +#define USHRT_MAX ((unsigned short int)~0U) +#define SHRT_MIN ((short int)(USHRT_MAX & ~(USHRT_MAX >> 1))) +#define SHRT_MAX ((short int)(USHRT_MAX >> 1)) + +#define UINT_MAX ((unsigned int)~0U) +#define INT_MIN ((int)(UINT_MAX & ~(UINT_MAX >> 1))) +#define INT_MAX ((int)(UINT_MAX >> 1)) + +#define ULONG_MAX ((unsigned long int)~0UL) +#define LONG_MIN ((long int)(ULONG_MAX & ~(ULONG_MAX >> 1))) +#define LONG_MAX ((long int)(ULONG_MAX >> 1)) + +#define ULLONG_MAX ((unsigned long long int)~0UL) +#define LLONG_MIN ((long long int)(ULLONG_MAX & ~(ULLONG_MAX >> 1))) +#define LLONG_MAX ((long long int)(ULLONG_MAX >> 1)) #endif |