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+---- Thread: Interpretation of Dir 4.3 (/showthread.php?tid=1307)
Interpretation of Dir 4.3 - nakagawat - 23-01-2017
Hi All,
Would you please advise me if a macro containing both assembly and C code
is a violation of Dir 4.3?
Example:
#define M_def do { asm( "mv r0,r1" ); use_uint32( 0 ); } while( 0 )
Please note that 'use_uint32( 0 );' is a function call.
Regards,
Tad
Re: Interpretation of Dir 4.3 - misra-c - 03-02-2017
Directive 4.3 states that the assembly language instruction shall "encapsulated and isolated". The meaning of the word "isolated" is that a macro containing assembly language instructions should contain only assembly instructions and no other C code.
Therefore your code violates Dir 4.3.