CMSIS-CORE uses the common coding rules for CMSIS components that are documented under Introduction.
CMSIS-CORE violates the following MISRA-C:2004 rules:
- Required Rule 8.5, object/function definition in header file.
Violated since function definitions in header files are used for function inlining'.
- Advisory Rule 12.4, Side effects on right hand side of logical operator.
Violated because volatile is used for core register definitions.
- Advisory Rule 14.7, Return statement before end of function.
Violated to simplify code logic.
- Required Rule 18.4, declaration of union type or object of union type: '{...}'.
Violated since unions are used for effective representation of core registers.
- Advisory Rule 19.4, Disallowed definition for macro.
Violated since macros are used for assembler keywords.
- Advisory Rule 19.7, Function-like macro defined.
Violated since function-like macros are used to generate more efficient code.
- Advisory Rule 19.16, all preprocessing directives must be valid.
Violated to set default settings for macros.
<device>.h files generated by SVDConv.exe violate the following MISRA-C:2004 rules:
- Advisory Rule 20.2, Re-use of C90 identifier pattern.
Violated since CMSIS macros begin with '__'. Since CMSIS is developed and verified with various compilers this approach is acceptable and avoids conflicts with user symbols.
- Advisory Rule 19.1, Declaration before #include.
Violated since Interrupt Number Definition Type (IRQn_Type) must be defined before including the core header file.