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rx/map: simplify protection conversion for windows
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This commit is contained in:
DH 2025-10-16 12:14:26 +03:00
parent 94a8724403
commit 0bc167ea87
1 changed files with 14 additions and 16 deletions
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30
rx/src/Mappable.cpp
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@ -122,22 +122,20 @@ std::errc rx::Mappable::map(rx::AddressRange virtualRange, std::size_t offset,
rx::EnumBitSet<Protection> protection,
[[maybe_unused]] std::size_t alignment) {
#ifdef _WIN32
DWORD prot = 0;
if (!protection) {
prot = PAGE_NOACCESS;
} else if (protection == Protection::R) {
prot = PAGE_READONLY;
} else if (protection & Protection::X) {
if (protection & Protection::W) {
prot = PAGE_EXECUTE_READWRITE;
} else if (protection & Protection::R) {
prot = PAGE_EXECUTE_READ;
} else {
prot = PAGE_EXECUTE;
}
} else {
prot = PAGE_READWRITE;
}
static const DWORD protTable[] = {
PAGE_NOACCESS, // 0
PAGE_READONLY, // R
PAGE_EXECUTE_READWRITE, // W
PAGE_EXECUTE_READWRITE, // RW
PAGE_EXECUTE, // X
PAGE_EXECUTE_READWRITE, // XR
PAGE_EXECUTE_READWRITE, // XW
PAGE_EXECUTE_READWRITE, // XRW
};
auto prot =
protTable[(protection & (Protection::R | Protection::W | Protection::X))
.toUnderlying()];
releaseVirtualSpace(virtualRange, alignment);