1 files changed, 123 insertions, 0 deletions
diff --git a/Source/Core/Common/Src/MemoryUtil.cpp b/Source/Core/Common/Src/MemoryUtil.cpp
new file mode 100644
index 0000000000..318e7361a1
--- /dev/null
+++ b/Source/Core/Common/Src/MemoryUtil.cpp
@@ -0,0 +1,123 @@
+// Copyright (C) 2003-2008 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+#include "Common.h"
+#include "MemoryUtil.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#elif __GNUC__
+#include <sys/mman.h>
+#include <errno.h>
+#include <stdio.h>
+#endif
+
+// MacOSX does not support MAP_VARIABLE
+#ifndef MAP_VARIABLE
+#define MAP_VARIABLE 0
+#endif
+
+// This is purposedely not a full wrapper for virtualalloc/mmap, but it
+// provides exactly the primitive operations that Dolphin needs.
+
+void* AllocateExecutableMemory(int size)
+{
+#ifdef _WIN32
+	void* ptr = VirtualAlloc(0, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+
+	if ((u64)ptr >= 0x80000000)
+	{
+		PanicAlert("Executable memory ended up above 2GB! WTF!");
+		// If this happens, we have to implement a free ram search scheme. ector knows how.
+	}
+
+	return(ptr);
+
+#else
+	void* retval = mmap(0, size, PROT_READ | PROT_WRITE | PROT_EXEC,
+			MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);  // | MAP_FIXED
+	printf("mappah exe %p %i\n", retval, size);
+
+	if (!retval)
+	{
+		PanicAlert("Failed to allocate executable memory, errno=%i", errno);
+	}
+
+	return(retval);
+#endif
+
+}
+
+
+void* AllocateMemoryPages(int size)
+{
+#ifdef _WIN32
+	void* ptr = VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
+
+	if (!ptr)
+	{
+		PanicAlert("Failed to allocate raw memory");
+	}
+
+	return(ptr);
+
+#else
+	void* retval = mmap(0, size, PROT_READ | PROT_WRITE,
+			MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); // | MAP_FIXED
+	printf("mappah %p %i\n", retval, size);
+
+	if (!retval)
+	{
+		PanicAlert("Failed to allocate raw memory, errno=%i", errno);
+	}
+
+	return(retval);
+#endif
+
+}
+
+
+void FreeMemoryPages(void* ptr, int size)
+{
+#ifdef _WIN32
+	VirtualFree(ptr, size, MEM_RELEASE);
+#else
+	munmap(ptr, size);
+#endif
+}
+
+
+void WriteProtectMemory(void* ptr, int size, bool allowExecute)
+{
+#ifdef _WIN32
+	VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READ : PAGE_READONLY, 0);
+#else
+	mprotect(ptr, size, allowExecute ? (PROT_READ | PROT_EXEC) : PROT_READ);
+#endif
+}
+
+
+void UnWriteProtectMemory(void* ptr, int size, bool allowExecute)
+{
+#ifdef _WIN32
+	VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READWRITE : PAGE_READONLY, 0);
+#else
+	mprotect(ptr, size, allowExecute ? (PROT_READ | PROT_WRITE | PROT_EXEC) : PROT_WRITE | PROT_READ);
+#endif
+}
+
+