Fix missing load bias.
There are binaries that have non-executable LOAD with p_offset=0.
E.g.,
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
PHDR 0x000040 0x0000000000400040 0x0000000000400040 0x0002a0 0x0002a0 R 0x8
INTERP 0x0002e0 0x00000000004002e0 0x00000000004002e0 0x00001c 0x00001c R 0x1
[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
LOAD 0x000000 0x0000000000400000 0x0000000000400000 0x0059e0 0x0059e0 R 0x1000
LOAD 0x006000 0x0000000000406000 0x0000000000406000 0x10f2b05 0x10f2b05 R E 0x1000
LOAD 0x10f9000 0x00000000014f9000 0x00000000014f9000 0x70f634 0x70f634 R 0x1000
LOAD 0x1808f18 0x0000000001c09f18 0x0000000001c09f18 0x089fc8 0x0a7ab8 RW 0x1000
DYNAMIC 0x1864ce0 0x0000000001c65ce0 0x0000000001c65ce0 0x000240 0x000240 RW 0x8
NOTE 0x0002fc 0x00000000004002fc 0x00000000004002fc 0x000020 0x000020 R 0x4
TLS 0x1808f18 0x0000000001c09f18 0x0000000001c09f18 0x000010 0x000010 R 0x8
GNU_EH_FRAME 0x11abde8 0x00000000015abde8 0x00000000015abde8 0x14484c 0x14484c R 0x4
GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RWE 0x10
GNU_RELRO 0x1808f18 0x0000000001c09f18 0x0000000001c09f18 0x05c0e8 0x05c0e8 R 0x1
Test: host libunwindstack_test passes.
Test: Modified unit tests and new offline test.
Change-Id: I3992f712be238c7d4109556580b5dcc71175fe19
diff --git a/libunwindstack/tests/UnwindOfflineTest.cpp b/libunwindstack/tests/UnwindOfflineTest.cpp
index baada82..e6158a2 100644
--- a/libunwindstack/tests/UnwindOfflineTest.cpp
+++ b/libunwindstack/tests/UnwindOfflineTest.cpp
@@ -1457,4 +1457,77 @@
EXPECT_EQ(0xc2044218, unwinder.frames()[0].sp);
}
+TEST_F(UnwindOfflineTest, load_bias_ro_rx_x86_64) {
+ ASSERT_NO_FATAL_FAILURE(Init("load_bias_ro_rx_x86_64/", ARCH_X86_64));
+
+ Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+ unwinder.Unwind();
+
+ std::string frame_info(DumpFrames(unwinder));
+ ASSERT_EQ(17U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+ EXPECT_EQ(
+ " #00 pc 00000000000e9dd4 libc.so (__write+20)\n"
+ " #01 pc 000000000007ab9c libc.so (_IO_file_write+44)\n"
+ " #02 pc 0000000000079f3e libc.so\n"
+ " #03 pc 000000000007bce8 libc.so (_IO_do_write+24)\n"
+ " #04 pc 000000000007b26e libc.so (_IO_file_xsputn+270)\n"
+ " #05 pc 000000000004f7f9 libc.so (_IO_vfprintf+1945)\n"
+ " #06 pc 0000000000057cb5 libc.so (_IO_printf+165)\n"
+ " #07 pc 0000000000ed1796 perfetto_unittests "
+ "(testing::internal::PrettyUnitTestResultPrinter::OnTestIterationStart(testing::UnitTest "
+ "const&, int)+374)\n"
+ " #08 pc 0000000000ed30fd perfetto_unittests "
+ "(testing::internal::TestEventRepeater::OnTestIterationStart(testing::UnitTest const&, "
+ "int)+125)\n"
+ " #09 pc 0000000000ed5e25 perfetto_unittests "
+ "(testing::internal::UnitTestImpl::RunAllTests()+581)\n"
+ " #10 pc 0000000000ef63f3 perfetto_unittests "
+ "(_ZN7testing8internal38HandleSehExceptionsInMethodIfSupportedINS0_12UnitTestImplEbEET0_PT_"
+ "MS4_FS3_vEPKc+131)\n"
+ " #11 pc 0000000000ee2a21 perfetto_unittests "
+ "(_ZN7testing8internal35HandleExceptionsInMethodIfSupportedINS0_12UnitTestImplEbEET0_PT_MS4_"
+ "FS3_vEPKc+113)\n"
+ " #12 pc 0000000000ed5bb9 perfetto_unittests (testing::UnitTest::Run()+185)\n"
+ " #13 pc 0000000000e900f0 perfetto_unittests (RUN_ALL_TESTS()+16)\n"
+ " #14 pc 0000000000e900d8 perfetto_unittests (main+56)\n"
+ " #15 pc 000000000002352a libc.so (__libc_start_main+234)\n"
+ " #16 pc 0000000000919029 perfetto_unittests (_start+41)\n",
+ frame_info);
+
+ EXPECT_EQ(0x7f9326a57dd4ULL, unwinder.frames()[0].pc);
+ EXPECT_EQ(0x7ffd224153c8ULL, unwinder.frames()[0].sp);
+ EXPECT_EQ(0x7f93269e8b9cULL, unwinder.frames()[1].pc);
+ EXPECT_EQ(0x7ffd224153d0ULL, unwinder.frames()[1].sp);
+ EXPECT_EQ(0x7f93269e7f3eULL, unwinder.frames()[2].pc);
+ EXPECT_EQ(0x7ffd22415400ULL, unwinder.frames()[2].sp);
+ EXPECT_EQ(0x7f93269e9ce8ULL, unwinder.frames()[3].pc);
+ EXPECT_EQ(0x7ffd22415440ULL, unwinder.frames()[3].sp);
+ EXPECT_EQ(0x7f93269e926eULL, unwinder.frames()[4].pc);
+ EXPECT_EQ(0x7ffd22415450ULL, unwinder.frames()[4].sp);
+ EXPECT_EQ(0x7f93269bd7f9ULL, unwinder.frames()[5].pc);
+ EXPECT_EQ(0x7ffd22415490ULL, unwinder.frames()[5].sp);
+ EXPECT_EQ(0x7f93269c5cb5ULL, unwinder.frames()[6].pc);
+ EXPECT_EQ(0x7ffd22415a10ULL, unwinder.frames()[6].sp);
+ EXPECT_EQ(0xed1796ULL, unwinder.frames()[7].pc);
+ EXPECT_EQ(0x7ffd22415af0ULL, unwinder.frames()[7].sp);
+ EXPECT_EQ(0xed30fdULL, unwinder.frames()[8].pc);
+ EXPECT_EQ(0x7ffd22415b70ULL, unwinder.frames()[8].sp);
+ EXPECT_EQ(0xed5e25ULL, unwinder.frames()[9].pc);
+ EXPECT_EQ(0x7ffd22415bb0ULL, unwinder.frames()[9].sp);
+ EXPECT_EQ(0xef63f3ULL, unwinder.frames()[10].pc);
+ EXPECT_EQ(0x7ffd22415c60ULL, unwinder.frames()[10].sp);
+ EXPECT_EQ(0xee2a21ULL, unwinder.frames()[11].pc);
+ EXPECT_EQ(0x7ffd22415cc0ULL, unwinder.frames()[11].sp);
+ EXPECT_EQ(0xed5bb9ULL, unwinder.frames()[12].pc);
+ EXPECT_EQ(0x7ffd22415d40ULL, unwinder.frames()[12].sp);
+ EXPECT_EQ(0xe900f0ULL, unwinder.frames()[13].pc);
+ EXPECT_EQ(0x7ffd22415d90ULL, unwinder.frames()[13].sp);
+ EXPECT_EQ(0xe900d8ULL, unwinder.frames()[14].pc);
+ EXPECT_EQ(0x7ffd22415da0ULL, unwinder.frames()[14].sp);
+ EXPECT_EQ(0x7f932699152aULL, unwinder.frames()[15].pc);
+ EXPECT_EQ(0x7ffd22415dd0ULL, unwinder.frames()[15].sp);
+ EXPECT_EQ(0x919029ULL, unwinder.frames()[16].pc);
+ EXPECT_EQ(0x7ffd22415e90ULL, unwinder.frames()[16].sp);
+}
+
} // namespace unwindstack