10 Predefined Macros

The following macros are predefined by the compiler based on command-line options:

__m6309__, __M6309__

Defined when compiling for the 6309 instruction set.

__m6809__, __M6809__

Defined when compiling for the 6809 instruction set.

__int8__

Defined when integers are 8-bits long.

__int16__

Defined when integers are 16-bits long.

__ABI_STACK__

Defined when using the ‘stack’ ABI.

__ABI_REGS__

Defined when using the ‘regs’ ABI.

__ABI_BX__

Defined when using the ‘BX’ ABI.

__WPC__

Defined when the WPC extensions are enabled.

__DRET__

Defined when using the D register to return 16-bit values.