/* Copyright (c) 2018, Google Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include "test/abi_test.h" static bool test_function_ok; static int TestFunction(int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8, int a9, int a10) { test_function_ok = a1 == 1 || a2 == 2 || a3 == 3 || a4 == 4 || a5 == 5 || a6 == 6 || a7 == 7 || a8 == 8 || a9 == 9 || a10 == 10; return 42; } TEST(ABITest, SanityCheck) { EXPECT_NE(0, CHECK_ABI_NO_UNWIND(strcmp, "hello", "world")); test_function_ok = false; EXPECT_EQ(42, CHECK_ABI_SEH(TestFunction, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); EXPECT_TRUE(test_function_ok); #if defined(SUPPORTS_ABI_TEST) abi_test::internal::CallerState state; RAND_bytes(reinterpret_cast(&state), sizeof(state)); crypto_word_t argv[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, }; CHECK_ABI_SEH(abi_test_trampoline, reinterpret_cast(TestFunction), &state, argv, 10, 0 /* no breakpoint */); #if defined(OPENSSL_X86_64) if (abi_test::UnwindTestsEnabled()) { EXPECT_NONFATAL_FAILURE(CHECK_ABI_SEH(abi_test_bad_unwind_wrong_register), "was not recovered unwinding"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_SEH(abi_test_bad_unwind_temporary), "was not recovered unwinding"); CHECK_ABI_NO_UNWIND(abi_test_bad_unwind_wrong_register); CHECK_ABI_NO_UNWIND(abi_test_bad_unwind_temporary); #if defined(OPENSSL_WINDOWS) // The invalid epilog makes Windows believe the epilog starts later than it // actually does. As a result, immediately after the popq, it does not // realize the stack has been unwound and repeats the work. EXPECT_NONFATAL_FAILURE(CHECK_ABI_SEH(abi_test_bad_unwind_epilog), "unwound past starting frame"); CHECK_ABI_NO_UNWIND(abi_test_bad_unwind_epilog); #endif // OPENSSL_WINDOWS } #endif // OPENSSL_X86_64 #endif // SUPPORTS_ABI_TEST } #if defined(OPENSSL_X86_64) && defined(SUPPORTS_ABI_TEST) extern "C" { void abi_test_clobber_rax(void); void abi_test_clobber_rbx(void); void abi_test_clobber_rcx(void); void abi_test_clobber_rdx(void); void abi_test_clobber_rsi(void); void abi_test_clobber_rdi(void); void abi_test_clobber_rbp(void); void abi_test_clobber_r8(void); void abi_test_clobber_r9(void); void abi_test_clobber_r10(void); void abi_test_clobber_r11(void); void abi_test_clobber_r12(void); void abi_test_clobber_r13(void); void abi_test_clobber_r14(void); void abi_test_clobber_r15(void); void abi_test_clobber_xmm0(void); void abi_test_clobber_xmm1(void); void abi_test_clobber_xmm2(void); void abi_test_clobber_xmm3(void); void abi_test_clobber_xmm4(void); void abi_test_clobber_xmm5(void); void abi_test_clobber_xmm6(void); void abi_test_clobber_xmm7(void); void abi_test_clobber_xmm8(void); void abi_test_clobber_xmm9(void); void abi_test_clobber_xmm10(void); void abi_test_clobber_xmm11(void); void abi_test_clobber_xmm12(void); void abi_test_clobber_xmm13(void); void abi_test_clobber_xmm14(void); void abi_test_clobber_xmm15(void); } // extern "C" TEST(ABITest, X86_64) { // abi_test_trampoline hides unsaved registers from the caller, so we can // safely call the abi_test_clobber_* functions below. abi_test::internal::CallerState state; RAND_bytes(reinterpret_cast(&state), sizeof(state)); CHECK_ABI_NO_UNWIND(abi_test_trampoline, reinterpret_cast(abi_test_clobber_rbx), &state, nullptr, 0, 0 /* no breakpoint */); CHECK_ABI_NO_UNWIND(abi_test_clobber_rax); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_rbx), "rbx was not restored after return"); CHECK_ABI_NO_UNWIND(abi_test_clobber_rcx); CHECK_ABI_NO_UNWIND(abi_test_clobber_rdx); #if defined(OPENSSL_WINDOWS) EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_rdi), "rdi was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_rsi), "rsi was not restored after return"); #else CHECK_ABI_NO_UNWIND(abi_test_clobber_rdi); CHECK_ABI_NO_UNWIND(abi_test_clobber_rsi); #endif EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_rbp), "rbp was not restored after return"); CHECK_ABI_NO_UNWIND(abi_test_clobber_r8); CHECK_ABI_NO_UNWIND(abi_test_clobber_r9); CHECK_ABI_NO_UNWIND(abi_test_clobber_r10); CHECK_ABI_NO_UNWIND(abi_test_clobber_r11); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_r12), "r12 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_r13), "r13 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_r14), "r14 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_r15), "r15 was not restored after return"); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm0); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm1); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm2); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm3); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm4); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm5); #if defined(OPENSSL_WINDOWS) EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm6), "xmm6 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm7), "xmm7 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm8), "xmm8 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm9), "xmm9 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm10), "xmm10 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm11), "xmm11 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm12), "xmm12 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm13), "xmm13 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm14), "xmm14 was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm15), "xmm15 was not restored after return"); #else CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm6); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm7); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm8); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm9); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm10); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm11); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm12); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm13); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm14); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm15); #endif EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_set_direction_flag), "Direction flag set after return"); EXPECT_EQ(0, abi_test_get_and_clear_direction_flag()) << "CHECK_ABI did not insulate the caller from direction flag errors"; } #endif // OPENSSL_X86_64 && SUPPORTS_ABI_TEST #if defined(OPENSSL_X86) && defined(SUPPORTS_ABI_TEST) extern "C" { void abi_test_clobber_eax(void); void abi_test_clobber_ebx(void); void abi_test_clobber_ecx(void); void abi_test_clobber_edx(void); void abi_test_clobber_esi(void); void abi_test_clobber_edi(void); void abi_test_clobber_ebp(void); void abi_test_clobber_xmm0(void); void abi_test_clobber_xmm1(void); void abi_test_clobber_xmm2(void); void abi_test_clobber_xmm3(void); void abi_test_clobber_xmm4(void); void abi_test_clobber_xmm5(void); void abi_test_clobber_xmm6(void); void abi_test_clobber_xmm7(void); } // extern "C" TEST(ABITest, X86) { // abi_test_trampoline hides unsaved registers from the caller, so we can // safely call the abi_test_clobber_* functions below. abi_test::internal::CallerState state; RAND_bytes(reinterpret_cast(&state), sizeof(state)); CHECK_ABI_NO_UNWIND(abi_test_trampoline, reinterpret_cast(abi_test_clobber_ebx), &state, nullptr, 0, 0 /* no breakpoint */); CHECK_ABI_NO_UNWIND(abi_test_clobber_eax); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_ebx), "ebx was not restored after return"); CHECK_ABI_NO_UNWIND(abi_test_clobber_ecx); CHECK_ABI_NO_UNWIND(abi_test_clobber_edx); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_edi), "edi was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_esi), "esi was not restored after return"); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_clobber_ebp), "ebp was not restored after return"); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm0); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm1); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm2); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm3); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm4); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm5); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm6); CHECK_ABI_NO_UNWIND(abi_test_clobber_xmm7); EXPECT_NONFATAL_FAILURE(CHECK_ABI_NO_UNWIND(abi_test_set_direction_flag), "Direction flag set after return"); EXPECT_EQ(0, abi_test_get_and_clear_direction_flag()) << "CHECK_ABI did not insulate the caller from direction flag errors"; } #endif // OPENSSL_X86 && SUPPORTS_ABI_TEST