platform_system_core/libunwindstack/Android.bp
Christopher Ferris ed37aca987 Find first non-zero jit debug entry.
Sometimes a process will have multiple shared libraries loaded
that have defined __jit_debug_descriptor. Specifically, art testing
will load libart.so and libartd.so, which would have broken unwinding
through jit'd code for art testing if libart.so winds up being found first.
In order to avoid duplicating the code for the linker to figure out
which one is live, change the algorithm to find the first non-zero
first_entry_ set in __jit_debug_descriptor.

Bug: 68396769

Test: Passes unit tests.
Test: Verified this can unwind 137-cfi on arm/arm64.
Change-Id: Ic4d403065d2c6f22476ef0171e7add17cd1464cd
2018-01-16 14:59:51 -08:00

240 lines
5.5 KiB
Text

//
// Copyright (C) 2017 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
cc_defaults {
name: "libunwindstack_flags",
host_supported: true,
cflags: [
"-Wall",
"-Werror",
"-Wextra",
],
target: {
darwin: {
enabled: false,
},
linux_bionic: {
enabled: true,
},
},
}
cc_library {
name: "libunwindstack",
vendor_available: true,
vndk: {
enabled: true,
support_system_process: true,
},
defaults: ["libunwindstack_flags"],
export_include_dirs: ["include"],
srcs: [
"ArmExidx.cpp",
"DwarfCfa.cpp",
"DwarfEhFrameWithHdr.cpp",
"DwarfMemory.cpp",
"DwarfOp.cpp",
"DwarfSection.cpp",
"Elf.cpp",
"ElfInterface.cpp",
"ElfInterfaceArm.cpp",
"JitDebug.cpp",
"Log.cpp",
"MapInfo.cpp",
"Maps.cpp",
"Memory.cpp",
"Regs.cpp",
"RegsArm.cpp",
"RegsArm64.cpp",
"RegsX86.cpp",
"RegsX86_64.cpp",
"RegsMips.cpp",
"RegsMips64.cpp",
"Unwinder.cpp",
"Symbols.cpp",
],
cflags: [
"-Wexit-time-destructors",
],
target: {
// Always disable optimizations for host to make it easier to debug.
host: {
cflags: ["-O0", "-g"],
},
},
arch: {
x86: {
srcs: ["AsmGetRegsX86.S"],
},
x86_64: {
srcs: ["AsmGetRegsX86_64.S"],
},
mips: {
srcs: ["AsmGetRegsMips.S"],
},
mips64: {
srcs: ["AsmGetRegsMips64.S"],
},
},
shared_libs: [
"libbase",
"liblog",
"liblzma",
],
}
//-------------------------------------------------------------------------
// Unit Tests
//-------------------------------------------------------------------------
cc_test {
name: "libunwindstack_test",
defaults: ["libunwindstack_flags"],
srcs: [
"tests/ArmExidxDecodeTest.cpp",
"tests/ArmExidxExtractTest.cpp",
"tests/DwarfCfaLogTest.cpp",
"tests/DwarfCfaTest.cpp",
"tests/DwarfDebugFrameTest.cpp",
"tests/DwarfEhFrameTest.cpp",
"tests/DwarfEhFrameWithHdrTest.cpp",
"tests/DwarfMemoryTest.cpp",
"tests/DwarfOpLogTest.cpp",
"tests/DwarfOpTest.cpp",
"tests/DwarfSectionTest.cpp",
"tests/DwarfSectionImplTest.cpp",
"tests/ElfFake.cpp",
"tests/ElfInterfaceArmTest.cpp",
"tests/ElfInterfaceTest.cpp",
"tests/ElfTest.cpp",
"tests/ElfTestUtils.cpp",
"tests/JitDebugTest.cpp",
"tests/LogFake.cpp",
"tests/MapInfoGetElfTest.cpp",
"tests/MapInfoGetLoadBiasTest.cpp",
"tests/MapsTest.cpp",
"tests/MemoryBufferTest.cpp",
"tests/MemoryFake.cpp",
"tests/MemoryFileTest.cpp",
"tests/MemoryLocalTest.cpp",
"tests/MemoryOfflineTest.cpp",
"tests/MemoryRangeTest.cpp",
"tests/MemoryRemoteTest.cpp",
"tests/MemoryTest.cpp",
"tests/RegsIterateTest.cpp",
"tests/RegsStepIfSignalHandlerTest.cpp",
"tests/RegsTest.cpp",
"tests/SymbolsTest.cpp",
"tests/UnwindOfflineTest.cpp",
"tests/UnwindTest.cpp",
"tests/UnwinderTest.cpp",
],
cflags: [
"-O0",
"-g",
],
shared_libs: [
"libbase",
"liblog",
"liblzma",
"libunwindstack",
],
static_libs: [
"libgmock",
],
data: [
"tests/files/elf32.xz",
"tests/files/elf64.xz",
"tests/files/offline/jit_debug_arm32/*",
"tests/files/offline/jit_debug_x86_32/*",
"tests/files/offline/gnu_debugdata_arm32/*",
"tests/files/offline/straddle_arm32/*",
"tests/files/offline/straddle_arm64/*",
],
}
//-------------------------------------------------------------------------
// Tools
//-------------------------------------------------------------------------
cc_defaults {
name: "libunwindstack_tools",
defaults: ["libunwindstack_flags"],
shared_libs: [
"libunwindstack",
"libbase",
"liblzma",
],
}
cc_binary {
name: "unwind",
defaults: ["libunwindstack_tools"],
srcs: [
"tools/unwind.cpp",
],
}
cc_binary {
name: "unwind_info",
defaults: ["libunwindstack_tools"],
srcs: [
"tools/unwind_info.cpp",
],
}
cc_binary {
name: "unwind_symbols",
defaults: ["libunwindstack_tools"],
srcs: [
"tools/unwind_symbols.cpp",
],
}
cc_binary {
name: "unwind_for_offline",
defaults: ["libunwindstack_tools"],
srcs: [
"tools/unwind_for_offline.cpp",
],
}
// Generates the elf data for use in the tests for .gnu_debugdata frames.
// Once these files are generated, use the xz command to compress the data.
cc_binary_host {
name: "gen_gnudebugdata",
defaults: ["libunwindstack_flags"],
srcs: [
"tests/GenGnuDebugdata.cpp",
],
}