JIT: base

all instructions are interpreted

1 files changed, 193 insertions, 0 deletions

diff --git a/src/dolphin/MemoryUtil.cpp b/src/dolphin/MemoryUtil.cpp
new file mode 100644
index 0000000..01cb897
--- /dev/null
+++ b/src/dolphin/MemoryUtil.cpp
@@ -0,0 +1,193 @@
+// Copyright 2008 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license_dolphin.txt file included.
+
+#include <cstddef>
+#include <cstdlib>
+#include <string>
+
+#define PanicAlert(fmt, ...) \
+  do \
+  { \
+    printf(fmt "\n", ## __VA_ARGS__); \
+    abort(); \
+  } while (false)
+
+#include "../types.h"
+#include "CommonFuncs.h"
+
+#ifdef _WIN32
+#include <windows.h>
+//#include "Common/StringUtil.h"
+#else
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#if defined __APPLE__ || defined __FreeBSD__ || defined __OpenBSD__
+#include <sys/sysctl.h>
+#elif defined __HAIKU__
+#include <OS.h>
+#else
+#include <sys/sysinfo.h>
+#endif
+#endif
+
+namespace Common
+{
+// This is purposely not a full wrapper for virtualalloc/mmap, but it
+// provides exactly the primitive operations that Dolphin needs.
+
+void* AllocateExecutableMemory(size_t size)
+{
+  printf("c\n");
+
+#if defined(_WIN32)
+  void* ptr = VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+#else
+  void* ptr =
+      mmap(nullptr, size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0);
+
+  if (ptr == MAP_FAILED)
+    ptr = nullptr;
+#endif
+  printf("a\n");
+
+  if (ptr == nullptr)
+    PanicAlert("Failed to allocate executable memory");
+
+  printf("b\n");
+
+  return ptr;
+}
+
+void* AllocateMemoryPages(size_t size)
+{
+#ifdef _WIN32
+  void* ptr = VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_READWRITE);
+#else
+  void* ptr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
+
+  if (ptr == MAP_FAILED)
+    ptr = nullptr;
+#endif
+
+  if (ptr == nullptr)
+    PanicAlert("Failed to allocate raw memory");
+
+  return ptr;
+}
+
+void* AllocateAlignedMemory(size_t size, size_t alignment)
+{
+#ifdef _WIN32
+  void* ptr = _aligned_malloc(size, alignment);
+#else
+  void* ptr = nullptr;
+  if (posix_memalign(&ptr, alignment, size) != 0)
+    ERROR_LOG(MEMMAP, "Failed to allocate aligned memory");
+#endif
+
+  if (ptr == nullptr)
+    PanicAlert("Failed to allocate aligned memory");
+
+  return ptr;
+}
+
+void FreeMemoryPages(void* ptr, size_t size)
+{
+  if (ptr)
+  {
+#ifdef _WIN32
+    if (!VirtualFree(ptr, 0, MEM_RELEASE))
+      PanicAlert("FreeMemoryPages failed!\nVirtualFree: %s", GetLastErrorString().c_str());
+#else
+    if (munmap(ptr, size) != 0)
+      PanicAlert("FreeMemoryPages failed!\nmunmap: %s", LastStrerrorString().c_str());
+#endif
+  }
+}
+
+void FreeAlignedMemory(void* ptr)
+{
+  if (ptr)
+  {
+#ifdef _WIN32
+    _aligned_free(ptr);
+#else
+    free(ptr);
+#endif
+  }
+}
+
+void ReadProtectMemory(void* ptr, size_t size)
+{
+#ifdef _WIN32
+  DWORD oldValue;
+  if (!VirtualProtect(ptr, size, PAGE_NOACCESS, &oldValue))
+    PanicAlert("ReadProtectMemory failed!\nVirtualProtect: %s", GetLastErrorString().c_str());
+#else
+  if (mprotect(ptr, size, PROT_NONE) != 0)
+    PanicAlert("ReadProtectMemory failed!\nmprotect: %s", LastStrerrorString().c_str());
+#endif
+}
+
+void WriteProtectMemory(void* ptr, size_t size, bool allowExecute)
+{
+#ifdef _WIN32
+  DWORD oldValue;
+  if (!VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READ : PAGE_READONLY, &oldValue))
+    PanicAlert("WriteProtectMemory failed!\nVirtualProtect: %s", GetLastErrorString().c_str());
+#else
+  if (mprotect(ptr, size, allowExecute ? (PROT_READ | PROT_EXEC) : PROT_READ) != 0)
+    PanicAlert("WriteProtectMemory failed!\nmprotect: %s", LastStrerrorString().c_str());
+#endif
+}
+
+void UnWriteProtectMemory(void* ptr, size_t size, bool allowExecute)
+{
+#ifdef _WIN32
+  DWORD oldValue;
+  if (!VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE, &oldValue))
+    PanicAlert("UnWriteProtectMemory failed!\nVirtualProtect: %s", GetLastErrorString().c_str());
+#else
+  if (mprotect(ptr, size,
+               allowExecute ? (PROT_READ | PROT_WRITE | PROT_EXEC) : PROT_WRITE | PROT_READ) != 0)
+  {
+    PanicAlert("UnWriteProtectMemory failed!\nmprotect: %s", LastStrerrorString().c_str());
+  }
+#endif
+}
+
+size_t MemPhysical()
+{
+#ifdef _WIN32
+  MEMORYSTATUSEX memInfo;
+  memInfo.dwLength = sizeof(MEMORYSTATUSEX);
+  GlobalMemoryStatusEx(&memInfo);
+  return memInfo.ullTotalPhys;
+#elif defined __APPLE__ || defined __FreeBSD__ || defined __OpenBSD__
+  int mib[2];
+  size_t physical_memory;
+  mib[0] = CTL_HW;
+#ifdef __APPLE__
+  mib[1] = HW_MEMSIZE;
+#elif defined __FreeBSD__
+  mib[1] = HW_REALMEM;
+#elif defined __OpenBSD__
+  mib[1] = HW_PHYSMEM;
+#endif
+  size_t length = sizeof(size_t);
+  sysctl(mib, 2, &physical_memory, &length, NULL, 0);
+  return physical_memory;
+#elif defined __HAIKU__
+  system_info sysinfo;
+  get_system_info(&sysinfo);
+  return static_cast<size_t>(sysinfo.max_pages * B_PAGE_SIZE);
+#else
+  struct sysinfo memInfo;
+  sysinfo(&memInfo);
+  return (size_t)memInfo.totalram * memInfo.mem_unit;
+#endif
+}
+
+}  // namespace Common