CMSIS-Core (Cortex-M) uses the common coding rules for CMSIS components that are documented in CMSIS Introduction.

CMSIS-Core (Cortex-M) violates the following MISRA-C:2012 rules:

• Directive 4.2, All usage of assembly language should be documented
  • CMSIS-Core uses assembly statements to access core registers on several places. These locations start with __ASM.
  • Inline assembly statements my be opaque to MISRA Checkers and can cause false-positive warnings.
• Directive 4.9, function-like macro defined.
  • Violated since function-like macros are used to generate more efficient code.
• Rule 1.3, multiple use of '#/##' operators in macro definition.
  • Violated since function-like macros are used to generate more efficient code.
• Rule 11.4, conversion between a pointer and integer type.
  • Violated because of core register access.
• Rule 11.6, cast from unsigned long to pointer.
  • Violated because of core register access.
• Rule 13.5, side effects on right hand side of logical operator.
  • Violated because of shift operand is used in macros and functions.
• Rule 14.4, conditional expression should have essentially Boolean type.
  • Violated since macros with several instructions are used.
• Rule 15.5, return statement before end of function.
  • Violated to simplify code logic.
• Rule 20.10, '#/##' operators used.
  • Violated since function-like macros are used to generate more efficient code.
• Rules 21.1 and 21.2, reserved to the compiler.
  • Violated since macros with leading underscores are used.