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Compiler/AWR1642: Integrate/compile ASM files with preprocessor directives

ROGERG
Mastermind 35800 points
Part Number: AWR1642

Tool/software: TI C/C++ Compiler

Dear Compiler Experts,

customer is having ASM files in his project using preprocessor directives (#include, #define, #ifdef, #ifndef, ...). When building the code he is getting ERROR messages like

=========================

ERROR!   at line 1: [E0003] Only labels and comments may begin in the first column. Make sure that the label name is not a reserved keyword.
        /* boardAsm.asm
ERROR!   at line 1: [E0002] Illegal mnemonic specified
        /* boardAsm.asm

ERROR!   at line 2: [E0002] Illegal mnemonic specified
         *
...

ERROR!   at line 9: [E0003] Only labels and comments may begin in the first column. Make sure that the label name is not a reserved keyword.
        #ifndef OS_ASM

=========================

It seems that other compilers offer preprocessing of the assembler files by either specific file extension or compiler options e.g. -preprocess_assembly_files

Do we have something similar for our TI ARM compiler 16.9.1.LTS?

I have checked the TI ARM Assembler Users Guide. There are some pre-processing options mentioned, but it is also mentioned, that they do not write preprocessed output, but instead generate some listing files.

There is also the ".cdecls" option described, which seems to automatically convert the C-type directives to assembler directives, but not sure, if this is the only and best option.

What would be the correct and/or most efficient approach to integrate those files into their build process?

Thanks and best regards,

Gregor

  • 0
    TI__Guru* 84225 points
    Sorry, the TI assembler does not support C preprocessing in the assembly code outside of .cdecls. Everything inside a .cdecls must be C code, so it is not suitable for conditional compilation of assembly code. The TI assembler has its own preprocessing directives, such as .if and .include; the user would need to convert the assembly code to use the TI directives, but it's a straightforward mapping.

    The most efficient approach would be to assemble the file using a different ARM vendor, making sure to generate an EABI file. Then you can put the EABI object file in your project, and the TI linker will accept it.