1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "gtest/gtest.h"
18
19 #include <setjmp.h>
20 #include <signal.h>
21 #include <sys/ucontext.h>
22
23 #include <cstdio>
24
25 #include "berberis/ndk_program_tests/scoped_sigaction.h"
26
27 namespace {
28
29 sigjmp_buf g_recover_arm64;
30
31 extern "C" char illegal_instruction_arm64;
32
SigillSignalHandlerArm64(int,siginfo_t *,void * ctx)33 void SigillSignalHandlerArm64(int /* sig */, siginfo_t* /* info */, void* ctx) {
34 fprintf(stderr, "SIGILL caught\n");
35 // Warning: do not use ASSERT, so that we recover with longjump unconditionally.
36 // Otherwise we'll be looping executing illegal instruction.
37 EXPECT_EQ(static_cast<ucontext*>(ctx)->uc_mcontext.pc,
38 reinterpret_cast<unsigned long>(&illegal_instruction_arm64));
39 longjmp(g_recover_arm64, 1);
40 }
41
TEST(Signal,SigillArm64)42 TEST(Signal, SigillArm64) {
43 struct sigaction sa;
44 sa.sa_flags = SA_SIGINFO;
45 sigemptyset(&sa.sa_mask);
46 sa.sa_sigaction = SigillSignalHandlerArm64;
47 ScopedSigaction scoped_sa(SIGILL, &sa);
48
49 if (setjmp(g_recover_arm64) == 0) {
50 fprintf(stderr, "Executing invalid ARM instruction\n");
51 asm volatile(
52 ".align 8\n"
53 ".globl illegal_instruction_arm64\n"
54 "illegal_instruction_arm64:\n"
55 ".4byte 0x0\n");
56 fprintf(stderr, "Bug, recover from SIGILL shall come as longjump()\n");
57 EXPECT_TRUE(0);
58 } else {
59 fprintf(stderr, "Recovered, test passed\n");
60 }
61 }
62
63 } // namespace
64