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adjust addresses to protect by upper 32bit for 64bit modules

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This commit is contained in:
Joachim Bauch
2010-10-24 03:03:35 +02:00
parent 2f0bb27c68
commit 75021eff5f
1 changed files with 10 additions and 2 deletions
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MemoryModule.c
+10 -2
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@@ -129,6 +129,11 @@ FinalizeSections(PMEMORYMODULE module)
{
int i;
PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(module->headers);
#ifdef _WIN64
POINTER_TYPE imageOffset = (module->headers->OptionalHeader.ImageBase & 0xffffffff00000000);
#else
#define imageOffset 0
#endif
// loop through all sections and change access flags
for (i=0; i<module->headers->FileHeader.NumberOfSections; i++, section++)
@@ -141,7 +146,7 @@ FinalizeSections(PMEMORYMODULE module)
if (section->Characteristics & IMAGE_SCN_MEM_DISCARDABLE)
{
// section is not needed any more and can safely be freed
VirtualFree((LPVOID)(POINTER_TYPE)section->Misc.PhysicalAddress, section->SizeOfRawData, MEM_DECOMMIT);
VirtualFree((LPVOID)((POINTER_TYPE)section->Misc.PhysicalAddress | imageOffset), section->SizeOfRawData, MEM_DECOMMIT);
continue;
}
@@ -163,13 +168,16 @@ FinalizeSections(PMEMORYMODULE module)
if (size > 0)
{
// change memory access flags
if (VirtualProtect((LPVOID)(POINTER_TYPE)section->Misc.PhysicalAddress, section->SizeOfRawData, protect, &oldProtect) == 0)
if (VirtualProtect((LPVOID)((POINTER_TYPE)section->Misc.PhysicalAddress | imageOffset), section->SizeOfRawData, protect, &oldProtect) == 0)
#ifdef DEBUG_OUTPUT
OutputLastError("Error protecting memory page")
#endif
;
}
}
#ifndef _WIN64
#undef imageOffset
#endif
}
static void