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Support initial memory protection

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momo5502
2025-04-13 17:59:47 +02:00
committed by Maurice Heumann
parent c4ba1e992f
commit 4f8c374b01
4 changed files with 13 additions and 4 deletions
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8
src/windows-emulator/module/module_mapping.cpp
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@@ -219,20 +219,22 @@ mapped_module map_module_from_data(memory_manager& memory, const std::span<const
binary.image_base = optional_header.ImageBase;
binary.size_of_image = page_align_up(optional_header.SizeOfImage); // TODO: Sanitize
if (!memory.allocate_memory(binary.image_base, binary.size_of_image, memory_permission::read))
if (!memory.allocate_memory(binary.image_base, binary.size_of_image, memory_permission::all))
{
binary.image_base = memory.find_free_allocation_base(binary.size_of_image);
const auto is_dll = nt_headers.FileHeader.Characteristics & IMAGE_FILE_DLL;
const auto has_dynamic_base = optional_header.DllCharacteristics & IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE;
const auto is_relocatable = is_dll || has_dynamic_base;
if (!is_relocatable ||
!memory.allocate_memory(binary.image_base, binary.size_of_image, memory_permission::read))
if (!is_relocatable || !memory.allocate_memory(binary.image_base, binary.size_of_image, memory_permission::all))
{
throw std::runtime_error("Memory range not allocatable");
}
}
// TODO: Make sure to match kernel allocation patterns to attain correct initial permissions!
memory.protect_memory(binary.image_base, binary.size_of_image, memory_permission::read);
binary.entry_point = binary.image_base + optional_header.AddressOfEntryPoint;
const auto* header_buffer = buffer.get_pointer_for_range(0, optional_header.SizeOfHeaders);