5d991bc351
1. Read .ARM.exidx and .ARM.extab, provides these data to libunwind through AccessMem. 2. In FindProcInfo, search .ARM.exidx for the idx entry of function containing ip. 3. Add structures to store .ARM.exidx info in DebugFrameInfo, and clean up the structure. 4. Add tests to test each unwind information (.eh_frame, .debug_frame, .gnu_debugdata, .ARM.exidx) separately. Bug: http://b/30974693 Test: run backtrace_test. Test: run simpleperf runtest.py. Change-Id: I9377a54379158bd35860efcf0e011423be7350d4
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3 KiB
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133 lines
No EOL
3 KiB
Text
//
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// Copyright (C) 2014 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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cc_defaults {
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name: "libbacktrace_common",
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cflags: [
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"-Wall",
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"-Werror",
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],
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clang_cflags: ["-Wno-inline-asm"],
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// The latest clang (r230699) does not allow SP/PC to be declared in inline asm lists.
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include_dirs: ["external/libunwind/include/tdep"],
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// TODO: LLVM_DEVICE_BUILD_MK
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// TODO: LLVM_HOST_BUILD_MK
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target: {
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host: {
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// -fno-omit-frame-pointer should be set for host build. Because currently
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// libunwind can't recognize .debug_frame using dwarf version 4, and it relies
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// on stack frame pointer to do unwinding on x86.
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// $(LLVM_HOST_BUILD_MK) overwrites -fno-omit-frame-pointer. so the below line
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// must be after the include.
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cflags: [
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"-Wno-extern-c-compat",
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"-fno-omit-frame-pointer",
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],
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},
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darwin: {
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enabled: false,
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},
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},
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multilib: {
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lib32: {
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suffix: "32",
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},
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lib64: {
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suffix: "64",
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},
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}
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}
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libbacktrace_sources = [
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"Backtrace.cpp",
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"BacktraceCurrent.cpp",
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"BacktracePtrace.cpp",
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"thread_utils.c",
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"ThreadEntry.cpp",
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"UnwindCurrent.cpp",
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"UnwindMap.cpp",
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"UnwindPtrace.cpp",
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]
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cc_library {
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name: "libbacktrace",
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defaults: ["libbacktrace_common"],
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host_supported: true,
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srcs: [
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"BacktraceMap.cpp",
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],
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target: {
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darwin: {
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enabled: true,
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},
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linux: {
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srcs: libbacktrace_sources,
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shared_libs: [
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"libbase",
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"liblog",
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"libunwind",
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],
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static_libs: ["libcutils"],
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host_ldlibs: ["-lrt"],
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},
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android: {
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srcs: libbacktrace_sources,
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shared_libs: [
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"libbase",
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"liblog",
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"libunwind",
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],
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static_libs: ["libcutils"],
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},
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},
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}
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cc_library_shared {
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name: "libbacktrace_test",
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defaults: ["libbacktrace_common"],
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host_supported: true,
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strip: {
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none: true,
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},
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cflags: ["-O0"],
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srcs: ["backtrace_testlib.c"],
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target: {
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linux: {
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shared_libs: [
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"libunwind",
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],
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},
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android: {
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shared_libs: [
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"libunwind",
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],
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},
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}
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} |