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authorGravatar liamwhite2023-07-26 10:33:28 -0400
committerGravatar GitHub2023-07-26 10:33:28 -0400
commitd3da1e6517fe27670b6c2d713d144872d55057d8 (patch)
treeab5c72b17b15185ec40945c5ba29400569b50630 /src/common
parentMerge pull request #11142 from german77/avoid_crash (diff)
parentFixes and workarounds to make UBSan happier on macOS (diff)
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Merge pull request #10990 from comex/ubsan
Fixes and workarounds to make UBSan happier on macOS
Diffstat (limited to 'src/common')
-rw-r--r--src/common/page_table.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/src/common/page_table.h b/src/common/page_table.h
index fec8378f3..e653d52ad 100644
--- a/src/common/page_table.h
+++ b/src/common/page_table.h
@@ -51,7 +51,7 @@ struct PageTable {
51 class PageInfo { 51 class PageInfo {
52 public: 52 public:
53 /// Returns the page pointer 53 /// Returns the page pointer
54 [[nodiscard]] u8* Pointer() const noexcept { 54 [[nodiscard]] uintptr_t Pointer() const noexcept {
55 return ExtractPointer(raw.load(std::memory_order_relaxed)); 55 return ExtractPointer(raw.load(std::memory_order_relaxed));
56 } 56 }
57 57
@@ -61,7 +61,7 @@ struct PageTable {
61 } 61 }
62 62
63 /// Returns the page pointer and attribute pair, extracted from the same atomic read 63 /// Returns the page pointer and attribute pair, extracted from the same atomic read
64 [[nodiscard]] std::pair<u8*, PageType> PointerType() const noexcept { 64 [[nodiscard]] std::pair<uintptr_t, PageType> PointerType() const noexcept {
65 const uintptr_t non_atomic_raw = raw.load(std::memory_order_relaxed); 65 const uintptr_t non_atomic_raw = raw.load(std::memory_order_relaxed);
66 return {ExtractPointer(non_atomic_raw), ExtractType(non_atomic_raw)}; 66 return {ExtractPointer(non_atomic_raw), ExtractType(non_atomic_raw)};
67 } 67 }
@@ -73,13 +73,13 @@ struct PageTable {
73 } 73 }
74 74
75 /// Write a page pointer and type pair atomically 75 /// Write a page pointer and type pair atomically
76 void Store(u8* pointer, PageType type) noexcept { 76 void Store(uintptr_t pointer, PageType type) noexcept {
77 raw.store(reinterpret_cast<uintptr_t>(pointer) | static_cast<uintptr_t>(type)); 77 raw.store(pointer | static_cast<uintptr_t>(type));
78 } 78 }
79 79
80 /// Unpack a pointer from a page info raw representation 80 /// Unpack a pointer from a page info raw representation
81 [[nodiscard]] static u8* ExtractPointer(uintptr_t raw) noexcept { 81 [[nodiscard]] static uintptr_t ExtractPointer(uintptr_t raw) noexcept {
82 return reinterpret_cast<u8*>(raw & (~uintptr_t{0} << ATTRIBUTE_BITS)); 82 return raw & (~uintptr_t{0} << ATTRIBUTE_BITS);
83 } 83 }
84 84
85 /// Unpack a page type from a page info raw representation 85 /// Unpack a page type from a page info raw representation