//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Jeff Cohen and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#include "Win32.h"
-#include "llvm/System/Memory.h"
#include "llvm/System/Process.h"
namespace llvm {
//=== and must not be UNIX code
//===----------------------------------------------------------------------===//
-MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
+MemoryBlock Memory::AllocateRWX(unsigned NumBytes,
+ const MemoryBlock *NearBlock,
+ std::string *ErrMsg) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
+ //FIXME: support NearBlock if ever needed on Win64.
+
void *pa = VirtualAlloc(NULL, NumPages*pageSize, MEM_COMMIT,
PAGE_EXECUTE_READWRITE);
if (pa == NULL) {
- ThrowError("Can't allocate RWX Memory: ");
+ MakeErrMsg(ErrMsg, "Can't allocate RWX Memory: ");
+ return MemoryBlock();
}
MemoryBlock result;
return result;
}
-void Memory::ReleaseRWX(MemoryBlock& M) {
- if (M.Address == 0 || M.Size == 0) return;
- if (!VirtualFree(M.Address, 0, MEM_RELEASE)) {
- ThrowError("Can't release RWX Memory: ");
- }
+bool Memory::ReleaseRWX(MemoryBlock &M, std::string *ErrMsg) {
+ if (M.Address == 0 || M.Size == 0) return false;
+ if (!VirtualFree(M.Address, 0, MEM_RELEASE))
+ return MakeErrMsg(ErrMsg, "Can't release RWX Memory: ");
+ return false;
}
}
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab