diff options
Diffstat (limited to 'include/lib/utils.h')
| -rw-r--r-- | include/lib/utils.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/lib/utils.h b/include/lib/utils.h index f7af8f66c..b6bc9af67 100644 --- a/include/lib/utils.h +++ b/include/lib/utils.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: @@ -66,4 +66,18 @@ #define check_uptr_overflow(ptr, inc) \ (((ptr) > UINTPTR_MAX - (inc)) ? 1 : 0) +/* + * For those constants to be shared between C and other sources, apply a 'ull' + * suffix to the argument only in C, to avoid undefined or unintended behaviour. + * + * The GNU assembler and linker do not support the 'ull' suffix (it causes the + * build process to fail) therefore the suffix is omitted when used in linker + * scripts and assembler files. +*/ +#if defined(__LINKER__) || defined(__ASSEMBLY__) +# define ULL(_x) (_x) +#else +# define ULL(_x) (_x##ull) +#endif + #endif /* __UTILS_H__ */ |