Merge "Move tools to separate directory." (3588f6a5) · Commits · e / os / android_system_core

libunwindstack/Android.bp

+28 −6

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

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

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

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

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

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

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

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

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

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

libunwindstack/tools/unwind.cpp

0 → 100644

+160 −0

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

	#include "ArmExidx.h"		#include "ArmExidx.h"
	@@ -115,10 +115,6 @@ int main(int argc, char** argv) {
	printf("%s is not a regular file.\n", argv[1]);		printf("%s is not a regular file.\n", argv[1]);
	return 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.		// Send all log messages to stdout.
	log_to_stdout(true);		log_to_stdout(true);

libunwindstack/tools/unwind_symbols.cpp

0 → 100644

+97 −0

Original line number	Original line	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;
			}