AN3350 datasheet(72/185 Pages) STMICROELECTRONICS

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Working with the assembler

AN3350

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Doc ID 018512 Rev 2

#endif

Every #if directive must end with a matching #endif directive. A file shouldn't end unless

its active condition has been concluded.

#abort

The #abort directive aborts preprocessor operations (also responsible for reading the

input). Assembling will continue only on the lines produced thus far.

#quit

The #quit directive terminates overall assembling and, with an exit status of 1, returns

control to the user.

#error and #warn

The #error directive prints an error message to standard error as specified in its string

operand.

Likewise, #warn directives produce a warning message.

Note:

Any non-string arguments to these directives are subject to macro expansion, thereby

allowing messages containing previously calculated values or texts.

#rem

Like comments, #rem directive lines are simply discarded by the preprocessor.

10.6.2

Including files

The #include file directive results in the inclusion of the named source file in the code.

File names need to be quoted as described below. On all operating systems the slash

character (/) is used to separate directories and file names.

User and system files

The assembler makes a distinction between user and system files:

●

User file names are double quoted (“user_file”).

●

System files are regular text files that are part of the tool distribution. The files are

identified by name and, you are not concerned about their exact location. System files

are enclosed by angled brackets instead of double quotes (<system_file>).

#include

The directive #include directory is used to begin processing a new file. After

completing that file (and all files recursively related) the next line of the current file will be

read.

User and system paths

Search for user files in the directory lists within a user path list. When code is executed, this

list contains the current directory and the directory from which the tool was invoked. This is

then extended to contain new items from each '#include' directive met, and the new

file's directory is added to the user path.

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