1*1b191cb5SApple OSS Distributions #include <stdint.h> 2*1b191cb5SApple OSS Distributions #include <darwintest.h> 3*1b191cb5SApple OSS Distributions #include <darwintest_utils.h> 4*1b191cb5SApple OSS Distributions 5*1b191cb5SApple OSS Distributions #include "../libkern/os/ptrtools.h" 6*1b191cb5SApple OSS Distributions 7*1b191cb5SApple OSS Distributions #define CHECK_ALIGNMENT(T) \ 8*1b191cb5SApple OSS Distributions { \ 9*1b191cb5SApple OSS Distributions T *__p; \ 10*1b191cb5SApple OSS Distributions T_QUIET; T_EXPECT_EQ_ULONG(__alignof__(*__p), sizeof(*__p), #T " native alignment"); \ 11*1b191cb5SApple OSS Distributions T_ASSERT_EQ_ULONG(__alignof__(os_unaligned_deref(__p)), 1UL, #T " alignment"); \ 12*1b191cb5SApple OSS Distributions } 13*1b191cb5SApple OSS Distributions 14*1b191cb5SApple OSS Distributions T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true)); 15*1b191cb5SApple OSS Distributions 16*1b191cb5SApple OSS Distributions struct A { 17*1b191cb5SApple OSS Distributions int a; 18*1b191cb5SApple OSS Distributions }; 19*1b191cb5SApple OSS Distributions 20*1b191cb5SApple OSS Distributions T_DECL(os_unaligned, "Unaligned pointer access") 21*1b191cb5SApple OSS Distributions { 22*1b191cb5SApple OSS Distributions int x = 0x914842; 23*1b191cb5SApple OSS Distributions int *p = &x; 24*1b191cb5SApple OSS Distributions 25*1b191cb5SApple OSS Distributions T_ASSERT_EQ_INT(os_unaligned_deref(p), x, "load"); 26*1b191cb5SApple OSS Distributions os_unaligned_deref(&x) = INT_MIN; 27*1b191cb5SApple OSS Distributions T_ASSERT_EQ_INT(x, INT_MIN, "store"); 28*1b191cb5SApple OSS Distributions 29*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(unsigned); 30*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(long long); 31*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(uintptr_t); 32*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(int16_t); 33*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(uint64_t); 34*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(struct A); 35*1b191cb5SApple OSS Distributions CHECK_ALIGNMENT(void *); 36*1b191cb5SApple OSS Distributions } 37