On Thu, 7 Apr 2011, Gunther Nikl wrote: > On Fri, Oct 08, 2010 at 09:58:14AM -0400, Nathan Froyd wrote: > > The patch below hookizes FUNCTION_ARG and related macros for the m68k > > backend. Nothing special here. > > With the old macro approach it was easy for a subtarget to override > these target properties. That doesn't work anymore for target hooks. > Is there a (recommended) way how a subtarget can override hook > functions?
The implementation of the hook should contain "if" (preferred over #if) conditions on the particular ABI in use, which could be determined by a macro in subtarget headers. (The key difference from the old system is that the macro is one only used within target code rather than being used in the target-independent compiler.) -- Joseph S. Myers jos...@codesourcery.com
