LANG.ASM.PRAGMA : Assembly Pragma

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CodeSonar^® 9.2p0

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C and C++

LANG.ASM.PRAGMA : Assembly Pragma

Summary

A region of assembly instructions is introduced with #pragma asm.

Properties

Class Name

Assembly Pragma

Significance

style

Mnemonic

LANG.ASM.PRAGMA

Categories

AUTOSARC++14	AUTOSARC++14:M7-4-2	Assembler instructions shall only be introduced using the asm declaration.
MisraC++2008	MisraC++2008:7-4-2	Assembler instructions shall only be introduced using the asm declaration.
MisraC++2023	MisraC++2023:10.4.1	The asm declaration shall not be used

Availability

Available for C and C++.

Enabling

Checks for this warning class are disabled by default, and require the unnormalized C ASTs for the project. To enable them, add the following WARNING_FILTER rule and RETAIN_UNNORMALIZED_C_AST specification to the project configuration file. Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer. They also require front end option --cs_ext_pragma_asm_endasm.

RETAIN_UNNORMALIZED_C_AST = Yes
EDG_FRONTEND_OPTIONS_PREPEND += --cs_ext_pragma_asm_endasm
WARNING_FILTER += allow class="Assembly Pragma"

Example

int lang_asm_pragma(int a){
#pragma asm "NOP" /* 'Assembly Pragma' warning issued here */
#pragma endasm
   return a;
}

int using_asm(int a){
   asm("NOP");    /* ok (with respect to this class)*/
                  /* but will trigger 'Inline Assembly Code' and 'Mixed Assembly and Code' if enabled */
   return a;
}

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

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