1*0f4c859eSApple OSS Distributions #include <stdint.h> 2*0f4c859eSApple OSS Distributions #include <darwintest.h> 3*0f4c859eSApple OSS Distributions #include <darwintest_utils.h> 4*0f4c859eSApple OSS Distributions 5*0f4c859eSApple OSS Distributions #include "../libkern/os/ptrtools.h" 6*0f4c859eSApple OSS Distributions 7*0f4c859eSApple OSS Distributions #define CHECK_ALIGNMENT(T) \ 8*0f4c859eSApple OSS Distributions { \ 9*0f4c859eSApple OSS Distributions T *__p; \ 10*0f4c859eSApple OSS Distributions T_QUIET; T_EXPECT_EQ_ULONG(__alignof__(*__p), sizeof(*__p), #T " native alignment"); \ 11*0f4c859eSApple OSS Distributions T_ASSERT_EQ_ULONG(__alignof__(os_unaligned_deref(__p)), 1UL, #T " alignment"); \ 12*0f4c859eSApple OSS Distributions } 13*0f4c859eSApple OSS Distributions 14*0f4c859eSApple OSS Distributions T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true)); 15*0f4c859eSApple OSS Distributions 16*0f4c859eSApple OSS Distributions struct A { 17*0f4c859eSApple OSS Distributions int a; 18*0f4c859eSApple OSS Distributions }; 19*0f4c859eSApple OSS Distributions 20*0f4c859eSApple OSS Distributions T_DECL(os_unaligned, "Unaligned pointer access") 21*0f4c859eSApple OSS Distributions { 22*0f4c859eSApple OSS Distributions int x = 0x914842; 23*0f4c859eSApple OSS Distributions int *p = &x; 24*0f4c859eSApple OSS Distributions 25*0f4c859eSApple OSS Distributions T_ASSERT_EQ_INT(os_unaligned_deref(p), x, "load"); 26*0f4c859eSApple OSS Distributions os_unaligned_deref(&x) = INT_MIN; 27*0f4c859eSApple OSS Distributions T_ASSERT_EQ_INT(x, INT_MIN, "store"); 28*0f4c859eSApple OSS Distributions 29*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(unsigned); 30*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(long long); 31*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(uintptr_t); 32*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(int16_t); 33*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(uint64_t); 34*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(struct A); 35*0f4c859eSApple OSS Distributions CHECK_ALIGNMENT(void *); 36*0f4c859eSApple OSS Distributions } 37