arch,mem: Move page table construction into the arch classes.

This gets rid of an awkward NoArchPageTable class, and also gives the
arch a place to inject ISA specific parameters (specifically page size)
without having to have TheISA:: in the generic version of these types.

Change-Id: I1412f303460d5c43dafdb9b3cd07af81c908a441
Reviewed-on: https://gem5-review.googlesource.com/6981
Reviewed-by: Alexandru Duțu <alexandru.dutu@amd.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/arch/alpha/process.cc

@@ -38,6 +38,7 @@
 #include "cpu/thread_context.hh"
 #include "debug/Loader.hh"
 #include "mem/page_table.hh"
+#include "params/Process.hh"
 #include "sim/aux_vector.hh"
 #include "sim/byteswap.hh"
 #include "sim/process_impl.hh"
@@ -48,8 +49,9 @@ using namespace AlphaISA;
 using namespace std;
 
 AlphaProcess::AlphaProcess(ProcessParams *params, ObjectFile *objFile)
-    : Process(params, objFile)
+    : Process(params, new FuncPageTable(params->name, params->pid), objFile)
 {
+    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
     Addr brk_point = objFile->dataBase() + objFile->dataSize() +
                      objFile->bssSize();
     brk_point = roundUp(brk_point, PageBytes);

src/arch/alpha/process.hh

@@ -61,7 +61,4 @@ class AlphaProcess : public Process
     virtual bool mmapGrowsDown() const override { return false; }
 };
 
-/* No architectural page table defined for this ISA */
-typedef NoArchPageTable ArchPageTable;
-
 #endif // __ARCH_ALPHA_PROCESS_HH__

src/arch/arm/process.cc

@@ -51,6 +51,7 @@
 #include "cpu/thread_context.hh"
 #include "debug/Stack.hh"
 #include "mem/page_table.hh"
+#include "params/Process.hh"
 #include "sim/aux_vector.hh"
 #include "sim/byteswap.hh"
 #include "sim/process_impl.hh"
@@ -62,8 +63,10 @@ using namespace ArmISA;
 
 ArmProcess::ArmProcess(ProcessParams *params, ObjectFile *objFile,
                        ObjectFile::Arch _arch)
-    : Process(params, objFile), arch(_arch)
+    : Process(params, new FuncPageTable(params->name, params->pid), objFile),
+              arch(_arch)
 {
+    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
 }
 
 ArmProcess32::ArmProcess32(ProcessParams *params, ObjectFile *objFile,

src/arch/arm/process.hh

@@ -95,8 +95,5 @@ class ArmProcess64 : public ArmProcess
     void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
 };
 
-/* No architectural page table defined for this ISA */
-typedef NoArchPageTable ArchPageTable;
-
 #endif // __ARM_PROCESS_HH__
 

src/arch/mips/process.cc

@@ -39,6 +39,7 @@
 #include "cpu/thread_context.hh"
 #include "debug/Loader.hh"
 #include "mem/page_table.hh"
+#include "params/Process.hh"
 #include "sim/aux_vector.hh"
 #include "sim/process.hh"
 #include "sim/process_impl.hh"
@@ -48,9 +49,10 @@
 using namespace std;
 using namespace MipsISA;
 
-MipsProcess::MipsProcess(ProcessParams * params, ObjectFile *objFile)
-    : Process(params, objFile)
+MipsProcess::MipsProcess(ProcessParams *params, ObjectFile *objFile)
+    : Process(params, new FuncPageTable(params->name, params->pid), objFile)
 {
+    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
     // Set up stack. On MIPS, stack starts at the top of kuseg
     // user address space. MIPS stack grows down from here
     Addr stack_base = 0x7FFFFFFF;

src/arch/mips/process.hh

@@ -58,8 +58,4 @@ class MipsProcess : public Process
     void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
 };
 
-/* No architectural page table defined for this ISA */
-typedef NoArchPageTable ArchPageTable;
-
-
 #endif // __MIPS_PROCESS_HH__

src/arch/power/process.cc

@@ -40,6 +40,7 @@
 #include "cpu/thread_context.hh"
 #include "debug/Stack.hh"
 #include "mem/page_table.hh"
+#include "params/Process.hh"
 #include "sim/aux_vector.hh"
 #include "sim/process_impl.hh"
 #include "sim/syscall_return.hh"
@@ -49,8 +50,9 @@ using namespace std;
 using namespace PowerISA;
 
 PowerProcess::PowerProcess(ProcessParams *params, ObjectFile *objFile)
-    : Process(params, objFile)
+    : Process(params, new FuncPageTable(params->name, params->pid), objFile)
 {
+    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
     // Set up break point (Top of Heap)
     Addr brk_point = objFile->dataBase() + objFile->dataSize() +
                      objFile->bssSize();

src/arch/power/process.hh

@@ -57,8 +57,5 @@ class PowerProcess : public Process
     void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
 };
 
-/* No architectural page table defined for this ISA */
-typedef NoArchPageTable ArchPageTable;
-
 #endif // __POWER_PROCESS_HH__
 

src/arch/riscv/process.cc

@@ -59,9 +59,10 @@
 using namespace std;
 using namespace RiscvISA;
 
-RiscvProcess::RiscvProcess(ProcessParams * params,
-    ObjectFile *objFile) : Process(params, objFile)
+RiscvProcess::RiscvProcess(ProcessParams *params, ObjectFile *objFile) :
+        Process(params, new FuncPageTable(params->name, params->pid), objFile)
 {
+    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
     const Addr stack_base = 0x7FFFFFFFFFFFFFFFL;
     const Addr max_stack_size = 8 * 1024 * 1024;
     const Addr next_thread_stack_base = stack_base - max_stack_size;

src/arch/riscv/process.hh

@@ -65,8 +65,4 @@ class RiscvProcess : public Process
     virtual bool mmapGrowsDown() const override { return false; }
 };
 
-/* No architectural page table defined for this ISA */
-typedef NoArchPageTable ArchPageTable;
-
-
 #endif // __RISCV_PROCESS_HH__

src/arch/sparc/process.cc

@@ -42,6 +42,7 @@
 #include "cpu/thread_context.hh"
 #include "debug/Stack.hh"
 #include "mem/page_table.hh"
+#include "params/Process.hh"
 #include "sim/aux_vector.hh"
 #include "sim/process_impl.hh"
 #include "sim/syscall_return.hh"
@@ -53,10 +54,12 @@ using namespace SparcISA;
 static const int FirstArgumentReg = 8;
 
 
-SparcProcess::SparcProcess(ProcessParams * params, ObjectFile *objFile,
+SparcProcess::SparcProcess(ProcessParams *params, ObjectFile *objFile,
                            Addr _StackBias)
-    : Process(params, objFile), StackBias(_StackBias)
+    : Process(params, new FuncPageTable(params->name, params->pid), objFile),
+              StackBias(_StackBias)
 {
+    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
     // Initialize these to 0s
     fillStart = 0;
     spillStart = 0;

src/arch/sparc/process.hh

@@ -160,7 +160,4 @@ class Sparc64Process : public SparcProcess
     void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
 };
 
-/* No architectural page table defined for this ISA */
-typedef NoArchPageTable ArchPageTable;
-
 #endif // __SPARC_PROCESS_HH__

src/arch/x86/process.cc

@@ -60,6 +60,7 @@
 #include "debug/Stack.hh"
 #include "mem/multi_level_page_table.hh"
 #include "mem/page_table.hh"
+#include "params/Process.hh"
 #include "sim/aux_vector.hh"
 #include "sim/process_impl.hh"
 #include "sim/syscall_desc.hh"
@@ -95,10 +96,16 @@ static const int ArgumentReg32[] = {
 static const int NumArgumentRegs32 M5_VAR_USED =
     sizeof(ArgumentReg) / sizeof(const int);
 
-X86Process::X86Process(ProcessParams * params, ObjectFile *objFile,
+X86Process::X86Process(ProcessParams *params, ObjectFile *objFile,
                        SyscallDesc *_syscallDescs, int _numSyscallDescs)
-    : Process(params, objFile), syscallDescs(_syscallDescs),
-      numSyscallDescs(_numSyscallDescs)
+    : Process(params, params->useArchPT ?
+                      static_cast<PageTableBase *>(
+                              new ArchPageTable(params->name, params->pid,
+                                                params->system)) :
+                      static_cast<PageTableBase *>(
+                              new FuncPageTable(params->name, params->pid)),
+              objFile),
+      syscallDescs(_syscallDescs), numSyscallDescs(_numSyscallDescs)
 {
 }
 

src/arch/x86/process.hh

@@ -59,6 +59,14 @@ namespace X86ISA
     class X86Process : public Process
     {
       protected:
+        /**
+         * Declaration of architectural page table for x86.
+         *
+         * These page tables are stored in system memory and respect x86
+         * specification.
+         */
+        typedef MultiLevelPageTable<PageTableOps> ArchPageTable;
+
         Addr _gdtStart;
         Addr _gdtSize;
 
@@ -189,14 +197,6 @@ namespace X86ISA
                    Process *process, TheISA::IntReg flags) override;
     };
 
-    /**
-     * Declaration of architectural page table for x86.
-     *
-     * These page tables are stored in system memory and respect x86
-     * specification.
-     */
-    typedef MultiLevelPageTable<PageTableOps> ArchPageTable;
-
 }
 
 #endif // __ARCH_X86_PROCESS_HH__

src/mem/page_table.hh

@@ -246,19 +246,4 @@ class FuncPageTable : public PageTableBase
     void getMappings(std::vector<std::pair<Addr, Addr>> *addr_maps) override;
 };
 
-/**
- * Faux page table class indended to stop the usage of
- * an architectural page table, when there is none defined
- * for a particular ISA.
- */
-class NoArchPageTable : public FuncPageTable
-{
-  public:
-    NoArchPageTable(const std::string &__name, uint64_t _pid, System *_sys,
-              Addr _pageSize = TheISA::PageBytes) : FuncPageTable(__name, _pid)
-    {
-        fatal("No architectural page table defined for this ISA.\n");
-    }
-};
-
 #endif // __MEM_PAGE_TABLE_HH__

src/sim/process.cc

@@ -101,14 +101,12 @@
 using namespace std;
 using namespace TheISA;
 
-Process::Process(ProcessParams * params, ObjectFile * obj_file)
+Process::Process(ProcessParams *params, PageTableBase *pTable,
+                 ObjectFile *obj_file)
     : SimObject(params), system(params->system),
       useArchPT(params->useArchPT),
       kvmInSE(params->kvmInSE),
-      pTable(useArchPT ?
-        static_cast<PageTableBase *>(new ArchPageTable(name(), params->pid,
-            system)) :
-        static_cast<PageTableBase *>(new FuncPageTable(name(), params->pid))),
+      pTable(pTable),
       initVirtMem(system->getSystemPort(), this,
                   SETranslatingPortProxy::Always),
       objFile(obj_file),

src/sim/process.hh

@@ -63,7 +63,8 @@ class ThreadContext;
 class Process : public SimObject
 {
   public:
-    Process(ProcessParams *params, ObjectFile *obj_file);
+    Process(ProcessParams *params, PageTableBase *pTable,
+            ObjectFile *obj_file);
 
     void serialize(CheckpointOut &cp) const override;
     void unserialize(CheckpointIn &cp) override;