b9cc4fbb26
This reverts commit 85b5fecec9.
Reason for revert: Breaks ART tests, reverting to investigate.
Change-Id: I1bb905407e87cbd4f832646651133a9caf6fcfc8
124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
/*
|
|
* 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 <elf.h>
|
|
#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 <unwindstack/DexFiles.h>
|
|
#include <unwindstack/Elf.h>
|
|
#include <unwindstack/JitDebug.h>
|
|
#include <unwindstack/Maps.h>
|
|
#include <unwindstack/Memory.h>
|
|
#include <unwindstack/Regs.h>
|
|
#include <unwindstack/Unwinder.h>
|
|
|
|
static bool Attach(pid_t pid) {
|
|
if (ptrace(PTRACE_SEIZE, pid, 0, 0) == -1) {
|
|
return false;
|
|
}
|
|
|
|
if (ptrace(PTRACE_INTERRUPT, pid, 0, 0) == -1) {
|
|
ptrace(PTRACE_DETACH, pid, 0, 0);
|
|
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;
|
|
}
|
|
|
|
void DoUnwind(pid_t pid) {
|
|
unwindstack::Regs* regs = unwindstack::Regs::RemoteGet(pid);
|
|
if (regs == nullptr) {
|
|
printf("Unable to get remote reg data\n");
|
|
return;
|
|
}
|
|
|
|
printf("ABI: ");
|
|
switch (regs->Arch()) {
|
|
case unwindstack::ARCH_ARM:
|
|
printf("arm");
|
|
break;
|
|
case unwindstack::ARCH_X86:
|
|
printf("x86");
|
|
break;
|
|
case unwindstack::ARCH_ARM64:
|
|
printf("arm64");
|
|
break;
|
|
case unwindstack::ARCH_X86_64:
|
|
printf("x86_64");
|
|
break;
|
|
case unwindstack::ARCH_MIPS:
|
|
printf("mips");
|
|
break;
|
|
case unwindstack::ARCH_MIPS64:
|
|
printf("mips64");
|
|
break;
|
|
default:
|
|
printf("unknown\n");
|
|
return;
|
|
}
|
|
printf("\n");
|
|
|
|
unwindstack::UnwinderFromPid unwinder(1024, pid);
|
|
if (!unwinder.Init(regs->Arch())) {
|
|
printf("Failed to init unwinder object.\n");
|
|
return;
|
|
}
|
|
|
|
unwinder.SetRegs(regs);
|
|
unwinder.Unwind();
|
|
|
|
// Print the frames.
|
|
for (size_t i = 0; i < unwinder.NumFrames(); i++) {
|
|
printf("%s\n", unwinder.FormatFrame(i).c_str());
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
ptrace(PTRACE_DETACH, pid, 0, 0);
|
|
|
|
return 0;
|
|
}
|