1*f6217f89SApple OSS Distributions #include <stdint.h> 2*f6217f89SApple OSS Distributions #include <darwintest.h> 3*f6217f89SApple OSS Distributions #include <darwintest_utils.h> 4*f6217f89SApple OSS Distributions 5*f6217f89SApple OSS Distributions #include "../libkern/os/ptrtools.h" 6*f6217f89SApple OSS Distributions 7*f6217f89SApple OSS Distributions #define CHECK_ALIGNMENT(T) \ 8*f6217f89SApple OSS Distributions { \ 9*f6217f89SApple OSS Distributions T *__p; \ 10*f6217f89SApple OSS Distributions T_QUIET; T_EXPECT_EQ_ULONG(__alignof__(*__p), sizeof(*__p), #T " native alignment"); \ 11*f6217f89SApple OSS Distributions T_ASSERT_EQ_ULONG(__alignof__(os_unaligned_deref(__p)), 1UL, #T " alignment"); \ 12*f6217f89SApple OSS Distributions } 13*f6217f89SApple OSS Distributions 14*f6217f89SApple OSS Distributions T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true)); 15*f6217f89SApple OSS Distributions 16*f6217f89SApple OSS Distributions struct A { 17*f6217f89SApple OSS Distributions int a; 18*f6217f89SApple OSS Distributions }; 19*f6217f89SApple OSS Distributions 20*f6217f89SApple OSS Distributions T_DECL(os_unaligned, "Unaligned pointer access") 21*f6217f89SApple OSS Distributions { 22*f6217f89SApple OSS Distributions int x = 0x914842; 23*f6217f89SApple OSS Distributions int *p = &x; 24*f6217f89SApple OSS Distributions 25*f6217f89SApple OSS Distributions T_ASSERT_EQ_INT(os_unaligned_deref(p), x, "load"); 26*f6217f89SApple OSS Distributions os_unaligned_deref(&x) = INT_MIN; 27*f6217f89SApple OSS Distributions T_ASSERT_EQ_INT(x, INT_MIN, "store"); 28*f6217f89SApple OSS Distributions 29*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(unsigned); 30*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(long long); 31*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(uintptr_t); 32*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(int16_t); 33*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(uint64_t); 34*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(struct A); 35*f6217f89SApple OSS Distributions CHECK_ALIGNMENT(void *); 36*f6217f89SApple OSS Distributions } 37