Merge "Move tools to separate directory." am: d312abe7c0 am: 3588f6a5fb (fef69039) · Commits · e / os / android_system_core

libunwindstack/Android.bp

+28 −6

Original line number	Diff line number	Diff line
		@@ -150,10 +150,10 @@ cc_test {
		}

		//-------------------------------------------------------------------------
		// Utility Executables
		// Tools
		//-------------------------------------------------------------------------
		cc_defaults {
		name: "libunwindstack_executables",
		name: "libunwindstack_tools",
		defaults: ["libunwindstack_flags"],

		shared_libs: [
		@@ -161,18 +161,40 @@ cc_defaults {
		"libbase",
		"liblzma",
		],
		}

		static_libs: [
		"liblog",
		cc_binary {
		name: "unwind",
		defaults: ["libunwindstack_tools"],

		srcs: [
		"tools/unwind.cpp",
		],

		target: {
		linux: {
		host_ldlibs: [
		"-lrt",
		],
		},
		},
		}

		cc_binary {
		name: "unwind_info",
		defaults: ["libunwindstack_executables"],
		defaults: ["libunwindstack_tools"],

		srcs: [
		"tools/unwind_info.cpp",
		],
		}

		cc_binary {
		name: "unwind_symbols",
		defaults: ["libunwindstack_tools"],

		srcs: [
		"unwind_info.cpp",
		"tools/unwind_symbols.cpp",
		],
		}

libunwindstack/tools/unwind.cpp

0 → 100644

+160 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 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.
		*/

		#include <errno.h>
		#include <inttypes.h>
		#include <signal.h>
		#include <stdint.h>
		#include <stdio.h>
		#include <stdlib.h>
		#include <string.h>
		#include <sys/ptrace.h>
		#include <sys/types.h>
		#include <unistd.h>

		#include <string>

		#include "Elf.h"
		#include "Maps.h"
		#include "Memory.h"
		#include "Regs.h"

		static bool Attach(pid_t pid) {
		if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {
		return false;
		}

		// Allow at least 1 second to attach properly.
		for (size_t i = 0; i < 1000; i++) {
		siginfo_t si;
		if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si) == 0) {
		return true;
		}
		usleep(1000);
		}
		printf("%d: Failed to stop.\n", pid);
		return false;
		}

		static bool Detach(pid_t pid) {
		return ptrace(PTRACE_DETACH, pid, 0, 0) == 0;
		}

		void DoUnwind(pid_t pid) {
		RemoteMaps remote_maps(pid);
		if (!remote_maps.Parse()) {
		printf("Failed to parse map data.\n");
		return;
		}

		uint32_t machine_type;
		Regs* regs = Regs::RemoteGet(pid, &machine_type);
		if (regs == nullptr) {
		printf("Unable to get remote reg data\n");
		return;
		}

		bool bits32 = true;
		printf("ABI: ");
		switch (machine_type) {
		case EM_ARM:
		printf("arm");
		break;
		case EM_386:
		printf("x86");
		break;
		case EM_AARCH64:
		printf("arm64");
		bits32 = false;
		break;
		case EM_X86_64:
		printf("x86_64");
		bits32 = false;
		break;
		default:
		printf("unknown\n");
		return;
		}
		printf("\n");

		MemoryRemote remote_memory(pid);
		for (size_t frame_num = 0; frame_num < 64; frame_num++) {
		if (regs->pc() == 0) {
		break;
		}
		MapInfo* map_info = remote_maps.Find(regs->pc());
		if (map_info == nullptr) {
		printf("Failed to find map data for the pc\n");
		break;
		}

		Elf* elf = map_info->GetElf(pid, true);

		uint64_t rel_pc = regs->GetRelPc(elf, map_info);
		uint64_t adjusted_rel_pc = rel_pc;
		// Don't need to adjust the first frame pc.
		if (frame_num != 0) {
		adjusted_rel_pc = regs->GetAdjustedPc(rel_pc, elf);
		}

		std::string name;
		if (bits32) {
		printf(" #%02zu pc %08" PRIx64, frame_num, adjusted_rel_pc);
		} else {
		printf(" #%02zu pc %016" PRIx64, frame_num, adjusted_rel_pc);
		}
		if (!map_info->name.empty()) {
		printf(" %s", map_info->name.c_str());
		if (map_info->elf_offset != 0) {
		printf(" (offset 0x%" PRIx64 ")", map_info->elf_offset);
		}
		} else {
		printf(" <anonymous:%" PRIx64 ">", map_info->offset);
		}
		uint64_t func_offset;
		if (elf->GetFunctionName(adjusted_rel_pc, &name, &func_offset)) {
		printf(" (%s", name.c_str());
		if (func_offset != 0) {
		printf("+%" PRId64, func_offset);
		}
		printf(")");
		}
		printf("\n");

		if (!elf->Step(rel_pc + map_info->elf_offset, regs, &remote_memory)) {
		break;
		}
		}
		}

		int main(int argc, char** argv) {
		if (argc != 2) {
		printf("Usage: unwind <PID>\n");
		return 1;
		}

		pid_t pid = atoi(argv[1]);
		if (!Attach(pid)) {
		printf("Failed to attach to pid %d: %s\n", pid, strerror(errno));
		return 1;
		}

		DoUnwind(pid);

		Detach(pid);

		return 0;
		}

libunwindstack/unwind_info.cpp→libunwindstack/tools/unwind_info.cpp

+1 −5

Original line number	Diff line number	Diff line
		@@ -21,8 +21,8 @@
		#include <stdio.h>
		#include <string.h>
		#include <sys/mman.h>
		#include <sys/types.h>
		#include <sys/stat.h>
		#include <sys/types.h>
		#include <unistd.h>

		#include "ArmExidx.h"
		@@ -115,10 +115,6 @@ int main(int argc, char** argv) {
		printf("%s is not a regular file.\n", argv[1]);
		return 1;
		}
		if (S_ISDIR(st.st_mode)) {
		printf("%s is a directory.\n", argv[1]);
		return 1;
		}

		// Send all log messages to stdout.
		log_to_stdout(true);

libunwindstack/tools/unwind_symbols.cpp

0 → 100644

+97 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 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.
		*/

		#include <errno.h>
		#include <inttypes.h>
		#include <stdio.h>
		#include <string.h>
		#include <sys/stat.h>
		#include <sys/types.h>
		#include <unistd.h>

		#include "Elf.h"
		#include "ElfInterface.h"
		#include "Log.h"

		int main(int argc, char** argv) {
		if (argc != 2) {
		printf("Need to pass the name of an elf file to the program.\n");
		return 1;
		}

		struct stat st;
		if (stat(argv[1], &st) == -1) {
		printf("Cannot stat %s: %s\n", argv[1], strerror(errno));
		return 1;
		}
		if (!S_ISREG(st.st_mode)) {
		printf("%s is not a regular file.\n", argv[1]);
		return 1;
		}

		// Send all log messages to stdout.
		log_to_stdout(true);

		MemoryFileAtOffset* memory = new MemoryFileAtOffset;
		if (!memory->Init(argv[1], 0)) {
		printf("Failed to init\n");
		return 1;
		}

		Elf elf(memory);
		if (!elf.Init() \|\| !elf.valid()) {
		printf("%s is not a valid elf file.\n", argv[1]);
		return 1;
		}

		switch (elf.machine_type()) {
		case EM_ARM:
		printf("ABI: arm\n");
		break;
		case EM_AARCH64:
		printf("ABI: arm64\n");
		break;
		case EM_386:
		printf("ABI: x86\n");
		break;
		case EM_X86_64:
		printf("ABI: x86_64\n");
		break;
		default:
		printf("ABI: unknown\n");
		return 1;
		}

		// This is a crude way to get the symbols in order.
		std::string name;
		uint64_t load_bias = elf.interface()->load_bias();
		for (const auto& entry : elf.interface()->pt_loads()) {
		uint64_t start = entry.second.offset + load_bias;
		uint64_t end = entry.second.table_size + load_bias;
		for (uint64_t addr = start; addr < end; addr += 4) {
		std::string cur_name;
		uint64_t func_offset;
		if (elf.GetFunctionName(addr, &cur_name, &func_offset)) {
		if (cur_name != name) {
		printf("<0x%" PRIx64 "> Function: %s\n", addr - func_offset, cur_name.c_str());
		}
		name = cur_name;
		}
		}
		}

		return 0;
		}