cc65/asminc/module.mac

.ifndef DYN_DRV
        DYN_DRV = 1
.endif

.macro  module_header   module_label
        .if DYN_DRV
                .segment        "HEADER"
        .else
                .data
                .export         module_label
                module_label:
        .endif
.endmacro
Create static drivers directly from source files. Up to now static drivers were created via co65 from dynamic drivers. However there was an issue with that approach: The dynamic drivers are "o65 simple files" which obligates that they start with the 'code' segment. However dynamic drivers need to start with the module header - which is written to. For dynamic drivers this isn't more than a conceptual issue because they are always contain a 'data' segment and may therefore only be loaded into writable memory. However when dynamic drivers are converted to static drivers using co65 then that issue becomes a real problem as then the 'code' segment may end up in non-writable memory - and thus writing to the module header fails. Instead of changing the way dynamic drivers work I opted to rather make static driver creation totally independent from dynamic drivers. This allows to place the module header in the 'data' segment (see 'module.mac'). 2014-06-04 21:50:18 +00:00			`.ifndef DYN_DRV`
			`DYN_DRV = 1`
			`.endif`

			`.macro module_header module_label`
			`.if DYN_DRV`
			`.segment "HEADER"`
			`.else`
			`.data`
			`.export module_label`
			`module_label:`
			`.endif`
			`.endmacro`