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In message <199809072053.VAA01106@phal.cygnus.co.uk>you write: > > The hack that I used is to create a new pseudo directive in gas called > > .compiler that takes a string argument in order to update the Compilation > > Unit for each module. I modified ASM_IDENTIFY_GCC to include this pseudo > > directive. However, that also means I needed to include the directive in > > gcc/config/pa/*.asm. For MPE and the HP3000, that's OK because gas is the > > only assembler available there. However, on HP-UX it is possible to not > > use gas, and these directives would break that assembler. > > > > Is there a better way to approach this in order to communicate the pertin > ent > > information to gas in order to generate the SOM Compilation Unit records > > in BFD for MPE without breaking things elsewhere? > > Where the existing ports need to emit this information, they use > FILE_ASM_OP - usually defined to something like file or .file, > or better, output_file_directive . > output_file_directive uses ASM_OUTPUT_MAIN_SOURCE_FILENAME or > ASM_OUTPUT_SOURCE_FILENAME, if defined. > > output_file_directive can be called from ASM_FILE_START; e.g. look at > config/svr4.h . .file already has a well defined syntax and meaning for gas and is already in use on the PA port (note that PA port can not, does not, and will not use svr4.h :-) I believe Mark needs to pass more information than is available in a .file directive. I also believe it makes more sense from an assembler language standpoint to have a clearer mapping from the assembler directive to what happens in the object file. Thus I would prefer .compiler, .compilation_unit or something like that over .file. jeff