    {-# LANGUAGE CPP #-}
    -- | Hard wired things related to registers.
    --      This is module is preventing the native code generator being able to
    --      emit code for non-host architectures.
    --
    --      TODO: Do a better job of the overloading, and eliminate this module.
    --      We'd probably do better with a Register type class, and hook this to
    --      Instruction somehow.
    --
    --      TODO: We should also make arch specific versions of RegAlloc.Graph.TrivColorable
    module TargetReg (
            targetVirtualRegSqueeze,
            targetRealRegSqueeze,
            targetClassOfRealReg,
            targetMkVirtualReg,
            targetRegDotColor,
            targetClassOfReg
    )

    where

    #include "HsVersions.h"

    import Reg
    import RegClass
    import Format

    import Outputable
    import Unique
    import Platform

    import qualified X86.Regs       as X86
    import qualified X86.RegInfo    as X86

    import qualified PPC.Regs       as PPC

    import qualified SPARC.Regs     as SPARC

    targetVirtualRegSqueeze :: Platform -> RegClass -> VirtualReg -> Int
    targetVirtualRegSqueeze platform
        = case platformArch platform of
          ArchX86       -> X86.virtualRegSqueeze
          ArchX86_64    -> X86.virtualRegSqueeze
          ArchPPC       -> PPC.virtualRegSqueeze
          ArchSPARC     -> SPARC.virtualRegSqueeze
          ArchSPARC64   -> panic "targetVirtualRegSqueeze ArchSPARC64"
          ArchPPC_64 _  -> PPC.virtualRegSqueeze
          ArchARM _ _ _ -> panic "targetVirtualRegSqueeze ArchARM"
          ArchARM64     -> panic "targetVirtualRegSqueeze ArchARM64"
          ArchAlpha     -> panic "targetVirtualRegSqueeze ArchAlpha"
          ArchMipseb    -> panic "targetVirtualRegSqueeze ArchMipseb"
          ArchMipsel    -> panic "targetVirtualRegSqueeze ArchMipsel"
          ArchJavaScript-> panic "targetVirtualRegSqueeze ArchJavaScript"
          ArchUnknown   -> panic "targetVirtualRegSqueeze ArchUnknown"

    targetRealRegSqueeze :: Platform -> RegClass -> RealReg -> Int
    targetRealRegSqueeze platform
        = case platformArch platform of
          ArchX86       -> X86.realRegSqueeze
          ArchX86_64    -> X86.realRegSqueeze
          ArchPPC       -> PPC.realRegSqueeze
          ArchSPARC     -> SPARC.realRegSqueeze
          ArchSPARC64   -> panic "targetRealRegSqueeze ArchSPARC64"
          ArchPPC_64 _  -> PPC.realRegSqueeze
          ArchARM _ _ _ -> panic "targetRealRegSqueeze ArchARM"
          ArchARM64     -> panic "targetRealRegSqueeze ArchARM64"
          ArchAlpha     -> panic "targetRealRegSqueeze ArchAlpha"
          ArchMipseb    -> panic "targetRealRegSqueeze ArchMipseb"
          ArchMipsel    -> panic "targetRealRegSqueeze ArchMipsel"
          ArchJavaScript-> panic "targetRealRegSqueeze ArchJavaScript"
          ArchUnknown   -> panic "targetRealRegSqueeze ArchUnknown"

    targetClassOfRealReg :: Platform -> RealReg -> RegClass
    targetClassOfRealReg platform
        = case platformArch platform of
          ArchX86       -> X86.classOfRealReg platform
          ArchX86_64    -> X86.classOfRealReg platform
          ArchPPC       -> PPC.classOfRealReg
          ArchSPARC     -> SPARC.classOfRealReg
          ArchSPARC64   -> panic "targetClassOfRealReg ArchSPARC64"
          ArchPPC_64 _  -> PPC.classOfRealReg
          ArchARM _ _ _ -> panic "targetClassOfRealReg ArchARM"
          ArchARM64     -> panic "targetClassOfRealReg ArchARM64"
          ArchAlpha     -> panic "targetClassOfRealReg ArchAlpha"
          ArchMipseb    -> panic "targetClassOfRealReg ArchMipseb"
          ArchMipsel    -> panic "targetClassOfRealReg ArchMipsel"
          ArchJavaScript-> panic "targetClassOfRealReg ArchJavaScript"
          ArchUnknown   -> panic "targetClassOfRealReg ArchUnknown"

    targetMkVirtualReg :: Platform -> Unique -> Format -> VirtualReg
    targetMkVirtualReg platform
        = case platformArch platform of
          ArchX86       -> X86.mkVirtualReg
          ArchX86_64    -> X86.mkVirtualReg
          ArchPPC       -> PPC.mkVirtualReg
          ArchSPARC     -> SPARC.mkVirtualReg
          ArchSPARC64   -> panic "targetMkVirtualReg ArchSPARC64"
          ArchPPC_64 _  -> PPC.mkVirtualReg
          ArchARM _ _ _ -> panic "targetMkVirtualReg ArchARM"
          ArchARM64     -> panic "targetMkVirtualReg ArchARM64"
          ArchAlpha     -> panic "targetMkVirtualReg ArchAlpha"
          ArchMipseb    -> panic "targetMkVirtualReg ArchMipseb"
          ArchMipsel    -> panic "targetMkVirtualReg ArchMipsel"
          ArchJavaScript-> panic "targetMkVirtualReg ArchJavaScript"
          ArchUnknown   -> panic "targetMkVirtualReg ArchUnknown"

    targetRegDotColor :: Platform -> RealReg -> SDoc
    targetRegDotColor platform
        = case platformArch platform of
          ArchX86       -> X86.regDotColor platform
          ArchX86_64    -> X86.regDotColor platform
          ArchPPC       -> PPC.regDotColor
          ArchSPARC     -> SPARC.regDotColor
          ArchSPARC64   -> panic "targetRegDotColor ArchSPARC64"
          ArchPPC_64 _  -> PPC.regDotColor
          ArchARM _ _ _ -> panic "targetRegDotColor ArchARM"
          ArchARM64     -> panic "targetRegDotColor ArchARM64"
          ArchAlpha     -> panic "targetRegDotColor ArchAlpha"
          ArchMipseb    -> panic "targetRegDotColor ArchMipseb"
          ArchMipsel    -> panic "targetRegDotColor ArchMipsel"
          ArchJavaScript-> panic "targetRegDotColor ArchJavaScript"
          ArchUnknown   -> panic "targetRegDotColor ArchUnknown"

    targetClassOfReg :: Platform -> Reg -> RegClass
    targetClassOfReg platform reg
     = case reg of
       RegVirtual vr -> classOfVirtualReg vr
       RegReal rr -> targetClassOfRealReg platform rr