power: Tidy up isa_traits.hh and delete the VAddr class.

The VAddr class wasn't used and was just a copy (with style fixes) of
the Alpha version.

Delete unused constants in isa_traits.hh, and remove unnecessary
includes. Replace MachineBytes with sizeof(uint32_t) in
arch/power/process.cc.

Change-Id: Ia4862448c43b2dd07078b1ebbbbfda4636343730
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33199
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/arch/power/isa_traits.hh

@@ -31,28 +31,15 @@
 #ifndef __ARCH_POWER_ISA_TRAITS_HH__
 #define __ARCH_POWER_ISA_TRAITS_HH__
 
-#include "arch/power/types.hh"
 #include "base/types.hh"
-#include "cpu/static_inst_fwd.hh"
 
 namespace PowerISA
 {
 
 const ByteOrder GuestByteOrder = BigEndianByteOrder;
 
-StaticInstPtr decodeInst(ExtMachInst);
-
 const Addr PageShift = 12;
 const Addr PageBytes = ULL(1) << PageShift;
-const Addr Page_Mask = ~(PageBytes - 1);
-const Addr PageOffset = PageBytes - 1;
-
-const Addr PteShift = 3;
-const Addr NPtePageShift = PageShift - PteShift;
-const Addr NPtePage = ULL(1) << NPtePageShift;
-const Addr PteMask = NPtePage - 1;
-
-const int MachineBytes = 4;
 
 } // namespace PowerISA
 

src/arch/power/pagetable.hh

@@ -38,69 +38,6 @@
 namespace PowerISA
 {
 
-static inline Addr PteAddr(Addr a) { return (a & PteMask) << PteShift; }
-
-struct VAddr
-{
-    static const int ImplBits = 43;
-    static const Addr ImplMask = (ULL(1) << ImplBits) - 1;
-    static const Addr UnImplMask = ~ImplMask;
-
-    Addr addr;
-
-    VAddr(Addr a)
-        : addr(a)
-    {}
-
-    operator Addr() const
-    {
-        return addr;
-    }
-
-    const VAddr
-    &operator=(Addr a)
-    {
-        addr = a;
-        return *this;
-    }
-
-    Addr
-    vpn() const
-    {
-        return (addr & ImplMask) >> PageShift;
-    }
-
-    Addr
-    page() const
-    {
-        return addr & Page_Mask;
-    }
-
-    Addr
-    offset() const
-    {
-        return addr & PageOffset;
-    }
-
-    Addr
-    level3() const
-    {
-        return PowerISA::PteAddr(addr >> PageShift);
-    }
-
-    Addr
-    level2() const
-    {
-        return PowerISA::PteAddr(addr >> (NPtePageShift + PageShift));
-    }
-
-    Addr
-    level1() const
-    {
-        return PowerISA::PteAddr(addr >> (2 * NPtePageShift + PageShift));
-    }
-};
-
 // ITB/DTB page table entry
 struct PTE
 {

src/arch/power/process.cc

@@ -77,7 +77,7 @@ PowerProcess::initState()
 {
     Process::initState();
 
-    argsInit(MachineBytes, PageBytes);
+    argsInit(sizeof(uint32_t), PageBytes);
 }
 
 void