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-rw-r--r--absl/base/internal/unaligned_access.h131
1 files changed, 97 insertions, 34 deletions
diff --git a/absl/base/internal/unaligned_access.h b/absl/base/internal/unaligned_access.h
index f20a8694..07a64bba 100644
--- a/absl/base/internal/unaligned_access.h
+++ b/absl/base/internal/unaligned_access.h
@@ -65,7 +65,8 @@ void __sanitizer_unaligned_store64(void *p, uint64_t v);
} // extern "C"
namespace absl {
-inline namespace lts_2018_06_20 {
+inline namespace lts_2018_12_18 {
+namespace base_internal {
inline uint16_t UnalignedLoad16(const void *p) {
return __sanitizer_unaligned_load16(p);
@@ -91,19 +92,71 @@ inline void UnalignedStore64(void *p, uint64_t v) {
__sanitizer_unaligned_store64(p, v);
}
-} // inline namespace lts_2018_06_20
+} // namespace base_internal
+} // inline namespace lts_2018_12_18
} // namespace absl
-#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) (absl::UnalignedLoad16(_p))
-#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) (absl::UnalignedLoad32(_p))
-#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) (absl::UnalignedLoad64(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
+ (absl::base_internal::UnalignedLoad16(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
+ (absl::base_internal::UnalignedLoad32(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
+ (absl::base_internal::UnalignedLoad64(_p))
+
+#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
+ (absl::base_internal::UnalignedStore16(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
+ (absl::base_internal::UnalignedStore32(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
+ (absl::base_internal::UnalignedStore64(_p, _val))
+
+#elif defined(UNDEFINED_BEHAVIOR_SANITIZER)
+
+namespace absl {
+inline namespace lts_2018_12_18 {
+namespace base_internal {
+
+inline uint16_t UnalignedLoad16(const void *p) {
+ uint16_t t;
+ memcpy(&t, p, sizeof t);
+ return t;
+}
+
+inline uint32_t UnalignedLoad32(const void *p) {
+ uint32_t t;
+ memcpy(&t, p, sizeof t);
+ return t;
+}
+
+inline uint64_t UnalignedLoad64(const void *p) {
+ uint64_t t;
+ memcpy(&t, p, sizeof t);
+ return t;
+}
+
+inline void UnalignedStore16(void *p, uint16_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
+
+} // namespace base_internal
+} // inline namespace lts_2018_12_18
+} // namespace absl
+
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
+ (absl::base_internal::UnalignedLoad16(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
+ (absl::base_internal::UnalignedLoad32(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
+ (absl::base_internal::UnalignedLoad64(_p))
#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
- (absl::UnalignedStore16(_p, _val))
+ (absl::base_internal::UnalignedStore16(_p, _val))
#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
- (absl::UnalignedStore32(_p, _val))
+ (absl::base_internal::UnalignedStore32(_p, _val))
#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
- (absl::UnalignedStore64(_p, _val))
+ (absl::base_internal::UnalignedStore64(_p, _val))
#elif defined(__x86_64__) || defined(_M_X64) || defined(__i386) || \
defined(_M_IX86) || defined(__ppc__) || defined(__PPC__) || \
@@ -160,8 +213,8 @@ inline void UnalignedStore64(void *p, uint64_t v) {
// so we do that.
namespace absl {
-inline namespace lts_2018_06_20 {
-namespace internal {
+inline namespace lts_2018_12_18 {
+namespace base_internal {
struct Unaligned16Struct {
uint16_t value;
@@ -173,24 +226,27 @@ struct Unaligned32Struct {
uint8_t dummy; // To make the size non-power-of-two.
} ABSL_ATTRIBUTE_PACKED;
-} // namespace internal
-} // inline namespace lts_2018_06_20
+} // namespace base_internal
+} // inline namespace lts_2018_12_18
} // namespace absl
-#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
- ((reinterpret_cast<const ::absl::internal::Unaligned16Struct *>(_p))->value)
-#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
- ((reinterpret_cast<const ::absl::internal::Unaligned32Struct *>(_p))->value)
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
+ ((reinterpret_cast<const ::absl::base_internal::Unaligned16Struct *>(_p)) \
+ ->value)
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
+ ((reinterpret_cast<const ::absl::base_internal::Unaligned32Struct *>(_p)) \
+ ->value)
-#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
- ((reinterpret_cast< ::absl::internal::Unaligned16Struct *>(_p))->value = \
- (_val))
-#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
- ((reinterpret_cast< ::absl::internal::Unaligned32Struct *>(_p))->value = \
- (_val))
+#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
+ ((reinterpret_cast< ::absl::base_internal::Unaligned16Struct *>(_p)) \
+ ->value = (_val))
+#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
+ ((reinterpret_cast< ::absl::base_internal::Unaligned32Struct *>(_p)) \
+ ->value = (_val))
namespace absl {
-inline namespace lts_2018_06_20 {
+inline namespace lts_2018_12_18 {
+namespace base_internal {
inline uint64_t UnalignedLoad64(const void *p) {
uint64_t t;
@@ -200,12 +256,14 @@ inline uint64_t UnalignedLoad64(const void *p) {
inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
-} // inline namespace lts_2018_06_20
+} // namespace base_internal
+} // inline namespace lts_2018_12_18
} // namespace absl
-#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) (absl::UnalignedLoad64(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
+ (absl::base_internal::UnalignedLoad64(_p))
#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
- (absl::UnalignedStore64(_p, _val))
+ (absl::base_internal::UnalignedStore64(_p, _val))
#else
@@ -217,7 +275,8 @@ inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
// unaligned loads and stores.
namespace absl {
-inline namespace lts_2018_06_20 {
+inline namespace lts_2018_12_18 {
+namespace base_internal {
inline uint16_t UnalignedLoad16(const void *p) {
uint16_t t;
@@ -243,19 +302,23 @@ inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
-} // inline namespace lts_2018_06_20
+} // namespace base_internal
+} // inline namespace lts_2018_12_18
} // namespace absl
-#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) (absl::UnalignedLoad16(_p))
-#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) (absl::UnalignedLoad32(_p))
-#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) (absl::UnalignedLoad64(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
+ (absl::base_internal::UnalignedLoad16(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
+ (absl::base_internal::UnalignedLoad32(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
+ (absl::base_internal::UnalignedLoad64(_p))
#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
- (absl::UnalignedStore16(_p, _val))
+ (absl::base_internal::UnalignedStore16(_p, _val))
#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
- (absl::UnalignedStore32(_p, _val))
+ (absl::base_internal::UnalignedStore32(_p, _val))
#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
- (absl::UnalignedStore64(_p, _val))
+ (absl::base_internal::UnalignedStore64(_p, _val))
#endif
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