--- old/src/share/vm/runtime/stubRoutines.cpp 2015-03-11 17:15:48.128218000 +0100 +++ new/src/share/vm/runtime/stubRoutines.cpp 2015-03-11 17:15:47.981137000 +0100 @@ -210,8 +210,36 @@ assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); } } -#endif +// simple test for SafeFetch32 +static void test_safefetch32() { + int dummy = 17; + int* const p_invalid = (int*) get_segfault_address(); + int* const p_valid = &dummy; + int result_invalid = SafeFetch32(p_invalid, 0xABC); + assert(result_invalid == 0xABC, "SafeFetch32 error"); + int result_valid = SafeFetch32(p_valid, 0xABC); + assert(result_valid == 17, "SafeFetch32 error"); +} + +// simple test for SafeFetchN +static void test_safefetchN() { +#ifdef _LP64 + const intptr_t v1 = UCONST64(0xABCD00000000ABCD); + const intptr_t v2 = UCONST64(0xDEFD00000000DEFD); +#else + const intptr_t v1 = 0xABCDABCD; + const intptr_t v2 = 0xDEFDDEFD; +#endif + intptr_t dummy = v1; + intptr_t* const p_invalid = (intptr_t*) get_segfault_address(); + intptr_t* const p_valid = &dummy; + intptr_t result_invalid = SafeFetchN(p_invalid, v2); + assert(result_invalid == v2, "SafeFetchN error"); + intptr_t result_valid = SafeFetchN(p_valid, v2); + assert(result_valid == v1, "SafeFetchN error"); +} +#endif void StubRoutines::initialize2() { if (_code2 == NULL) { @@ -300,6 +328,13 @@ test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong)); test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong)); + // test safefetch routines + // Not on Windows 32bit until 8074860 is fixed +#if ! (defined(_WIN32) && defined(_M_IX86)) + test_safefetch32(); + test_safefetchN(); +#endif + #endif }