[CPU, Memory] 0xE0000000 adjustment by @elad335 and mapping

src/xenia/cpu/backend/x64/x64_seq_memory.cc

@@ -12,6 +12,7 @@
 #include <algorithm>
 #include <cstring>
 
+#include "xenia/base/memory.h"
 #include "xenia/cpu/backend/x64/x64_op.h"
 #include "xenia/cpu/backend/x64/x64_tracers.h"
 
@@ -38,14 +39,29 @@ RegExp ComputeMemoryAddressOffset(X64Emitter& e, const T& guest,
     address += offset_const;
     if (address < 0x80000000) {
       return e.GetMembaseReg() + address;
+    } else {
+      if (address >= 0xE0000000 &&
+          xe::memory::allocation_granularity() > 0x1000) {
+        e.mov(e.eax, address + 0x1000);
       } else {
         e.mov(e.eax, address);
+      }
       return e.GetMembaseReg() + e.rax;
     }
+  } else {
+    if (xe::memory::allocation_granularity() > 0x1000) {
+      // Emulate the 4 KB physical address offset in 0xE0000000+ when can't do
+      // it via memory mapping.
+      e.cmp(guest.reg().cvt32(), 0xE0000000 - offset_const);
+      e.setae(e.al);
+      e.movzx(e.eax, e.al);
+      e.shl(e.eax, 12);
+      e.add(e.eax, guest.reg().cvt32());
     } else {
       // Clear the top 32 bits, as they are likely garbage.
       // TODO(benvanik): find a way to avoid doing this.
       e.mov(e.eax, guest.reg().cvt32());
+    }
     return e.GetMembaseReg() + e.rax + offset_const;
   }
 }
@@ -60,14 +76,29 @@ RegExp ComputeMemoryAddress(X64Emitter& e, const T& guest) {
     uint32_t address = static_cast<uint32_t>(guest.constant());
     if (address < 0x80000000) {
       return e.GetMembaseReg() + address;
+    } else {
+      if (address >= 0xE0000000 &&
+          xe::memory::allocation_granularity() > 0x1000) {
+        e.mov(e.eax, address + 0x1000);
       } else {
         e.mov(e.eax, address);
+      }
       return e.GetMembaseReg() + e.rax;
     }
+  } else {
+    if (xe::memory::allocation_granularity() > 0x1000) {
+      // Emulate the 4 KB physical address offset in 0xE0000000+ when can't do
+      // it via memory mapping.
+      e.cmp(guest.reg().cvt32(), 0xE0000000);
+      e.setae(e.al);
+      e.movzx(e.eax, e.al);
+      e.shl(e.eax, 12);
+      e.add(e.eax, guest.reg().cvt32());
     } else {
       // Clear the top 32 bits, as they are likely garbage.
       // TODO(benvanik): find a way to avoid doing this.
       e.mov(e.eax, guest.reg().cvt32());
+    }
     return e.GetMembaseReg() + e.rax;
   }
 }
@@ -142,7 +173,17 @@ struct ATOMIC_COMPARE_EXCHANGE_I32
                I<OPCODE_ATOMIC_COMPARE_EXCHANGE, I8Op, I64Op, I32Op, I32Op>> {
   static void Emit(X64Emitter& e, const EmitArgType& i) {
     e.mov(e.eax, i.src2);
+    if (xe::memory::allocation_granularity() > 0x1000) {
+      // Emulate the 4 KB physical address offset in 0xE0000000+ when can't do
+      // it via memory mapping.
+      e.cmp(i.src1.reg().cvt32(), 0xE0000000);
+      e.setae(e.cl);
+      e.movzx(e.ecx, e.cl);
+      e.shl(e.ecx, 12);
+      e.add(e.ecx, i.src1.reg().cvt32());
+    } else {
       e.mov(e.ecx, i.src1.reg().cvt32());
+    }
     e.lock();
     e.cmpxchg(e.dword[e.GetMembaseReg() + e.rcx], i.src3);
     e.sete(i.dest);
@@ -153,7 +194,17 @@ struct ATOMIC_COMPARE_EXCHANGE_I64
                I<OPCODE_ATOMIC_COMPARE_EXCHANGE, I8Op, I64Op, I64Op, I64Op>> {
   static void Emit(X64Emitter& e, const EmitArgType& i) {
     e.mov(e.rax, i.src2);
+    if (xe::memory::allocation_granularity() > 0x1000) {
+      // Emulate the 4 KB physical address offset in 0xE0000000+ when can't do
+      // it via memory mapping.
+      e.cmp(i.src1.reg().cvt32(), 0xE0000000);
+      e.setae(e.cl);
+      e.movzx(e.ecx, e.cl);
+      e.shl(e.ecx, 12);
+      e.add(e.ecx, i.src1.reg().cvt32());
+    } else {
       e.mov(e.ecx, i.src1.reg().cvt32());
+    }
     e.lock();
     e.cmpxchg(e.qword[e.GetMembaseReg() + e.rcx], i.src3);
     e.sete(i.dest);

src/xenia/memory.cc

@@ -168,11 +168,8 @@ bool Memory::Initialize() {
   // Prepare physical heaps.
   heaps_.physical.Initialize(this, physical_membase_, 0x00000000, 0x20000000,
                              4096);
-  // HACK: should be 64k, but with us overlaying A and E it needs to be 4.
-  /*heaps_.vA0000000.Initialize(this, virtual_membase_, 0xA0000000, 0x20000000,
-                              64 * 1024, &heaps_.physical);*/
   heaps_.vA0000000.Initialize(this, virtual_membase_, 0xA0000000, 0x20000000,
-                              4 * 1024, &heaps_.physical);
+                              64 * 1024, &heaps_.physical);
   heaps_.vC0000000.Initialize(this, virtual_membase_, 0xC0000000, 0x20000000,
                               16 * 1024 * 1024, &heaps_.physical);
   heaps_.vE0000000.Initialize(this, virtual_membase_, 0xE0000000, 0x1FD00000,
@@ -263,7 +260,7 @@ static const struct {
     {
         0xE0000000,
         0xFFFFFFFF,
-        0x0000000100000000ull,
+        0x0000000100001000ull,
     },
     //          - physical raw
     {
@@ -274,11 +271,15 @@ static const struct {
 };
 int Memory::MapViews(uint8_t* mapping_base) {
   assert_true(xe::countof(map_info) == xe::countof(views_.all_views));
+  // 0xE0000000 4 KB offset is emulated via host_address_offset and on the CPU
+  // side if system allocation granularity is bigger than 4 KB.
+  uint64_t granularity_mask = ~uint64_t(system_allocation_granularity_ - 1);
   for (size_t n = 0; n < xe::countof(map_info); n++) {
     views_.all_views[n] = reinterpret_cast<uint8_t*>(xe::memory::MapFileView(
         mapping_, mapping_base + map_info[n].virtual_address_start,
         map_info[n].virtual_address_end - map_info[n].virtual_address_start + 1,
-        xe::memory::PageAccess::kReadWrite, map_info[n].target_address));
+        xe::memory::PageAccess::kReadWrite,
+        map_info[n].target_address & granularity_mask));
     if (!views_.all_views[n]) {
       // Failed, so bail and try again.
       UnmapViews();
@@ -331,8 +332,7 @@ const BaseHeap* Memory::LookupHeap(uint32_t address) const {
 BaseHeap* Memory::LookupHeapByType(bool physical, uint32_t page_size) {
   if (physical) {
     if (page_size <= 4096) {
-      // HACK: should be vE0000000
+      return &heaps_.vE0000000;
-      return &heaps_.vA0000000;
     } else if (page_size <= 64 * 1024) {
       return &heaps_.vA0000000;
     } else {