1*5c2921b0SApple OSS Distributions #include <stdint.h> 2*5c2921b0SApple OSS Distributions #include <darwintest.h> 3*5c2921b0SApple OSS Distributions #include <darwintest_utils.h> 4*5c2921b0SApple OSS Distributions 5*5c2921b0SApple OSS Distributions #include "../libkern/os/ptrtools.h" 6*5c2921b0SApple OSS Distributions 7*5c2921b0SApple OSS Distributions #define CHECK_ALIGNMENT(T) \ 8*5c2921b0SApple OSS Distributions { \ 9*5c2921b0SApple OSS Distributions T *__p; \ 10*5c2921b0SApple OSS Distributions T_QUIET; T_EXPECT_EQ_ULONG(__alignof__(*__p), sizeof(*__p), #T " native alignment"); \ 11*5c2921b0SApple OSS Distributions T_ASSERT_EQ_ULONG(__alignof__(os_unaligned_deref(__p)), 1UL, #T " alignment"); \ 12*5c2921b0SApple OSS Distributions } 13*5c2921b0SApple OSS Distributions 14*5c2921b0SApple OSS Distributions T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true)); 15*5c2921b0SApple OSS Distributions 16*5c2921b0SApple OSS Distributions struct A { 17*5c2921b0SApple OSS Distributions int a; 18*5c2921b0SApple OSS Distributions }; 19*5c2921b0SApple OSS Distributions 20*5c2921b0SApple OSS Distributions T_DECL(os_unaligned, "Unaligned pointer access") 21*5c2921b0SApple OSS Distributions { 22*5c2921b0SApple OSS Distributions int x = 0x914842; 23*5c2921b0SApple OSS Distributions int *p = &x; 24*5c2921b0SApple OSS Distributions 25*5c2921b0SApple OSS Distributions T_ASSERT_EQ_INT(os_unaligned_deref(p), x, "load"); 26*5c2921b0SApple OSS Distributions os_unaligned_deref(&x) = INT_MIN; 27*5c2921b0SApple OSS Distributions T_ASSERT_EQ_INT(x, INT_MIN, "store"); 28*5c2921b0SApple OSS Distributions 29*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(unsigned); 30*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(long long); 31*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(uintptr_t); 32*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(int16_t); 33*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(uint64_t); 34*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(struct A); 35*5c2921b0SApple OSS Distributions CHECK_ALIGNMENT(void *); 36*5c2921b0SApple OSS Distributions } 37