13 X68k output module

This chapter describes the Xfile output module which can be selected with the ‘-Fxfile’ option. Refer to the TOS output module for generating absolute Z-file executables.

13.1 Legal

This module is written in 2018,2020,2021,2024 by Frank Wille and is covered by the vasm copyright without modifications.

13.2 Additional options for this module

‘-exec=<symbol>’

Use the given label <symbol> as entry point of the program. Omitting this option will define the execution address to be the same as the code section’s base address.

‘-loadhigh’

Set the load mode in the header to high address (2).

13.3 General

This module outputs the Xfile executable file format, which is used on Sharp X68000 16/32-bit computer with 68000 up to 68040 CPU.

13.4 Restrictions

• - The source must not define more than one code, data and bss section each. More complex sources with .rdata or .stack sections require a linker.
• - All symbols must be defined, otherwise the generation of the executable fails. Unknown symbols are listed by vasm.
• - The only relocations allowed in this format are 32-bit absolute.

13.5 Known Problems

Some known problems of this module at the moment:

• - None.

13.6 Error Messages

This module has the following error messages:

• - 3004: section attributes <attr> not supported
• - 3005: reloc type %d, size %d, mask 0x%lx (symbol %s + 0x%lx) not supported
• - 3006: reloc type %d not supported
• - 3007: undefined symbol <%s>
• - 3008: output module doesn’t allow multiple sections of the same type
• - 3009: undefined symbol <%s> at %s+%#lx, reloc type %d
• - 3011: weak symbol <%s> not supported by output format, treating as global