Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 208 insertions, 0 deletions

diff --git a/src/VBox/Runtime/r3/win/alloc-win.cpp b/src/VBox/Runtime/r3/win/alloc-win.cpp
new file mode 100644
index 00000000..084e588e
--- /dev/null
+++ b/src/VBox/Runtime/r3/win/alloc-win.cpp
@@ -0,0 +1,208 @@
+/* $Id: alloc-win.cpp $ */
+/** @file
+ * IPRT - Memory Allocation, Windows.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+/*#define USE_VIRTUAL_ALLOC*/
+#define LOG_GROUP RTLOGGROUP_MEM
+#include <iprt/win/windows.h>
+
+#include <iprt/alloc.h>
+#include <iprt/assert.h>
+#include <iprt/param.h>
+#include <iprt/string.h>
+#include <iprt/errcore.h>
+
+#ifndef USE_VIRTUAL_ALLOC
+# include <malloc.h>
+#endif
+
+
+RTDECL(void *) RTMemExecAllocTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+    RT_NOREF_PV(pszTag);
+
+    /*
+     * Allocate first.
+     */
+    AssertMsg(cb, ("Allocating ZERO bytes is really not a good idea! Good luck with the next assertion!\n"));
+    cb = RT_ALIGN_Z(cb, 32);
+    void *pv = malloc(cb);
+    AssertMsg(pv, ("malloc(%d) failed!!!\n", cb));
+    if (pv)
+    {
+        memset(pv, 0xcc, cb);
+        void   *pvProt = (void *)((uintptr_t)pv & ~(uintptr_t)PAGE_OFFSET_MASK);
+        size_t  cbProt = ((uintptr_t)pv & PAGE_OFFSET_MASK) + cb;
+        cbProt = RT_ALIGN_Z(cbProt, PAGE_SIZE);
+        DWORD fFlags = 0;
+        if (!VirtualProtect(pvProt, cbProt, PAGE_EXECUTE_READWRITE, &fFlags))
+        {
+            AssertMsgFailed(("VirtualProtect(%p, %#x,,) -> lasterr=%d\n", pvProt, cbProt, GetLastError()));
+            free(pv);
+            pv = NULL;
+        }
+    }
+    return pv;
+}
+
+
+RTDECL(void)    RTMemExecFree(void *pv, size_t cb) RT_NO_THROW_DEF
+{
+    RT_NOREF_PV(cb);
+
+    if (pv)
+        free(pv);
+}
+
+
+RTDECL(void *) RTMemPageAllocTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+    RT_NOREF_PV(pszTag);
+
+#ifdef USE_VIRTUAL_ALLOC
+    void *pv = VirtualAlloc(NULL, RT_ALIGN_Z(cb, PAGE_SIZE), MEM_COMMIT, PAGE_READWRITE);
+#else
+    void *pv = _aligned_malloc(RT_ALIGN_Z(cb, PAGE_SIZE), PAGE_SIZE);
+#endif
+    AssertMsg(pv, ("cb=%d lasterr=%d\n", cb, GetLastError()));
+    return pv;
+}
+
+
+RTDECL(void *) RTMemPageAllocZTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+    RT_NOREF_PV(pszTag);
+
+#ifdef USE_VIRTUAL_ALLOC
+    void *pv = VirtualAlloc(NULL, RT_ALIGN_Z(cb, PAGE_SIZE), MEM_COMMIT, PAGE_READWRITE);
+#else
+    void *pv = _aligned_malloc(RT_ALIGN_Z(cb, PAGE_SIZE), PAGE_SIZE);
+#endif
+    if (pv)
+    {
+        memset(pv, 0, RT_ALIGN_Z(cb, PAGE_SIZE));
+        return pv;
+    }
+    AssertMsgFailed(("cb=%d lasterr=%d\n", cb, GetLastError()));
+    return NULL;
+}
+
+
+RTDECL(void) RTMemPageFree(void *pv, size_t cb) RT_NO_THROW_DEF
+{
+    RT_NOREF_PV(cb);
+
+    if (pv)
+    {
+#ifdef USE_VIRTUAL_ALLOC
+        if (!VirtualFree(pv, 0, MEM_RELEASE))
+            AssertMsgFailed(("pv=%p lasterr=%d\n", pv, GetLastError()));
+#else
+        _aligned_free(pv);
+#endif
+    }
+}
+
+
+RTDECL(int) RTMemProtect(void *pv, size_t cb, unsigned fProtect) RT_NO_THROW_DEF
+{
+    /*
+     * Validate input.
+     */
+    if (cb == 0)
+    {
+        AssertMsgFailed(("!cb\n"));
+        return VERR_INVALID_PARAMETER;
+    }
+    if (fProtect & ~(RTMEM_PROT_NONE | RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC))
+    {
+        AssertMsgFailed(("fProtect=%#x\n", fProtect));
+        return VERR_INVALID_PARAMETER;
+    }
+
+    /*
+     * Convert the flags.
+     */
+    int fProt;
+    Assert(!RTMEM_PROT_NONE);
+    switch (fProtect & (RTMEM_PROT_NONE | RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC))
+    {
+        case RTMEM_PROT_NONE:
+            fProt = PAGE_NOACCESS;
+            break;
+
+        case RTMEM_PROT_READ:
+            fProt = PAGE_READONLY;
+            break;
+
+        case RTMEM_PROT_READ | RTMEM_PROT_WRITE:
+            fProt = PAGE_READWRITE;
+            break;
+
+        case RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC:
+            fProt = PAGE_EXECUTE_READWRITE;
+            break;
+
+        case RTMEM_PROT_READ | RTMEM_PROT_EXEC:
+            fProt = PAGE_EXECUTE_READWRITE;
+            break;
+
+        case RTMEM_PROT_WRITE:
+            fProt = PAGE_READWRITE;
+            break;
+
+        case RTMEM_PROT_WRITE | RTMEM_PROT_EXEC:
+            fProt = PAGE_EXECUTE_READWRITE;
+            break;
+
+        case RTMEM_PROT_EXEC:
+            fProt = PAGE_EXECUTE_READWRITE;
+            break;
+
+        /* If the compiler had any brains it would warn about this case. */
+        default:
+            AssertMsgFailed(("fProtect=%#x\n", fProtect));
+            return VERR_INTERNAL_ERROR;
+    }
+
+    /*
+     * Align the request.
+     */
+    cb += (uintptr_t)pv & PAGE_OFFSET_MASK;
+    pv = (void *)((uintptr_t)pv & ~(uintptr_t)PAGE_OFFSET_MASK);
+
+    /*
+     * Change the page attributes.
+     */
+    DWORD fFlags = 0;
+    if (VirtualProtect(pv, cb, fProt, &fFlags))
+        return VINF_SUCCESS;
+    return RTErrConvertFromWin32(GetLastError());
+}
+