LANG.ASM.MIXED : Mixed Assembly and Code

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CodeSonar^® 9.2p0

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C and C++

LANG.ASM.MIXED : Mixed Assembly and Code

Summary

A procedure contains a mixture of source and assembly statements.

This class is a strict subset of Inline Assembly Code.

Properties

Class Name

Mixed Assembly and Code

Significance

style

Mnemonic

LANG.ASM.MIXED

Categories

MisraC2025	MisraC2025:D.4.3	Assembly language shall be encapsulated and isolated
MisraC2023	MisraC2023:D.4.3	Assembly language shall be encapsulated and isolated
Misra2012	Misra2012:D.4.3	Assembly language shall be encapsulated and isolated
Misra2004	Misra2004:2.1	Assembly language shall be encapsulated and isolated
AUTOSARC++14	AUTOSARC++14:M7-4-3	Assembly language shall be encapsulated and isolated.
MisraC++2008	MisraC++2008:7-4-3	Assembly language shall be encapsulated and isolated.
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.

RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Mixed Assembly and Code"

Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

Example

void do_something(void);

void use_asm(void){
    asm("CLI"); /* 'Mixed Assembly and Code' warning issued here (covers both occurrences in this function) */
                               /* ('Inline Assembly' warning also issued if enabled) */
    do_something();
    asm("STI");
}

void only_asm(void){
    asm("CLI");  /* procedure contains no source, so no 'Mixed Assembly and Code' warning */
                               /* ('Inline Assembly' warning issued if enabled)  */
    asm("STI");
}

Relevant Configuration File Parameters

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

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