On Fri, 2012-12-07 at 14:43 -0800, H.J. Lu wrote: > > I think you need a way to tell a bad register from a good register > > which doesn't have DWARF register number. > > > > Something like > > #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
The other option would be to have a new macro that returned true or false if a register had a dbx register number. #define VALID_DBX_REGNUM(regno) (true) and check that instead of checking the return of dbx_reg_number(). A target would override this default definition of VALID_DBX_REGNUM for registers it wanted to ignore. It should probably be a target macro but so should DBX_REGISTER_NUMBER and DWARF_FRAME_REGNUM, we probably don't want to be making that change at this time in the release cycle. Steve Ellcey sell...@mips.com
