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ASML C Coding Standard
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Rule:  6.4.1.bChecked automatically with code checker

Synopsis:Only with a very good reason, the asm keyword may be used to insert assembly language directly into the translator output.
Language:C
Severity Level:2
Category:Lexical Elements


Description:

Justification

Because of the variety of the used syntaxes (by different compilers) the asm keyword is not portable. It is better to use assembly source files with a c-header.

Example 1

asm("TOIEEE ARO,R0"); /* RIGHT */ 

Example 2

asm("...." : "..."); /* RIGHT */

Example 3

asm volatile("...." : "..."); /* RIGHT */

Example 4

__asm__ ("..." : "...."); /* WRONG */

Example 5

__asm__ __volatile__ ("...." : "...."); /* WRONG */