You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.8 KiB
67 lines
2.8 KiB
/* |
|
* Copyright (C) 2018 The Android Open Source Project |
|
* All rights reserved. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* * Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* * Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in |
|
* the documentation and/or other materials provided with the |
|
* distribution. |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
|
* SUCH DAMAGE. |
|
*/ |
|
|
|
#pragma once |
|
|
|
#include <sys/cdefs.h> |
|
#include <sys/syscall.h> |
|
#include <sys/types.h> |
|
#include <unistd.h> |
|
|
|
// An inline version of pthread_sigqueue(pthread_self(), ...), to reduce the number of |
|
// uninteresting stack frames at the top of a crash. |
|
static inline __always_inline void inline_raise(int sig, void* value = nullptr) { |
|
// Protect ourselves against stale cached PID/TID values by fetching them via syscall. |
|
// http://b/37769298 |
|
pid_t pid = syscall(__NR_getpid); |
|
pid_t tid = syscall(__NR_gettid); |
|
siginfo_t info = {}; |
|
info.si_code = SI_QUEUE; |
|
info.si_pid = pid; |
|
info.si_uid = getuid(); |
|
info.si_value.sival_ptr = value; |
|
|
|
#if defined(__arm__) |
|
register long r0 __asm__("r0") = pid; |
|
register long r1 __asm__("r1") = tid; |
|
register long r2 __asm__("r2") = sig; |
|
register long r3 __asm__("r3") = reinterpret_cast<long>(&info); |
|
register long r7 __asm__("r7") = __NR_rt_tgsigqueueinfo; |
|
__asm__("swi #0" : "=r"(r0) : "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r7) : "memory"); |
|
#elif defined(__aarch64__) |
|
register long x0 __asm__("x0") = pid; |
|
register long x1 __asm__("x1") = tid; |
|
register long x2 __asm__("x2") = sig; |
|
register long x3 __asm__("x3") = reinterpret_cast<long>(&info); |
|
register long x8 __asm__("x8") = __NR_rt_tgsigqueueinfo; |
|
__asm__("svc #0" : "=r"(x0) : "r"(x0), "r"(x1), "r"(x2), "r"(x3), "r"(x8) : "memory"); |
|
#else |
|
syscall(__NR_rt_tgsigqueueinfo, pid, tid, sig, &info); |
|
#endif |
|
} |
|
|
|
|