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Merge pull request #10990 from comex/ubsan

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Fixes and workarounds to make UBSan happier on macOS
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liamwhite 2023-07-26 10:33:28 -04:00 • committed by GitHub
commit d3da1e6517
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11 changed files with 42 additions and 32 deletions
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12
src/common/page_table.h
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@ -51,7 +51,7 @@ struct PageTable {
class PageInfo {
public:
/// Returns the page pointer
[[nodiscard]] u8* Pointer() const noexcept {
[[nodiscard]] uintptr_t Pointer() const noexcept {
return ExtractPointer(raw.load(std::memory_order_relaxed));
}
@ -61,7 +61,7 @@ struct PageTable {
}
/// Returns the page pointer and attribute pair, extracted from the same atomic read
[[nodiscard]] std::pair<u8*, PageType> PointerType() const noexcept {
[[nodiscard]] std::pair<uintptr_t, PageType> PointerType() const noexcept {
const uintptr_t non_atomic_raw = raw.load(std::memory_order_relaxed);
return {ExtractPointer(non_atomic_raw), ExtractType(non_atomic_raw)};
}
@ -73,13 +73,13 @@ struct PageTable {
}
/// Write a page pointer and type pair atomically
void Store(u8* pointer, PageType type) noexcept {
raw.store(reinterpret_cast<uintptr_t>(pointer) | static_cast<uintptr_t>(type));
void Store(uintptr_t pointer, PageType type) noexcept {
raw.store(pointer | static_cast<uintptr_t>(type));
}
/// Unpack a pointer from a page info raw representation
[[nodiscard]] static u8* ExtractPointer(uintptr_t raw) noexcept {
return reinterpret_cast<u8*>(raw & (~uintptr_t{0} << ATTRIBUTE_BITS));
[[nodiscard]] static uintptr_t ExtractPointer(uintptr_t raw) noexcept {
return raw & (~uintptr_t{0} << ATTRIBUTE_BITS);
}
/// Unpack a page type from a page info raw representation