mirror of
https://github.com/nillerusr/source-engine.git
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155 lines
3.8 KiB
C++
155 lines
3.8 KiB
C++
/*
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Copyright (C) 2022 nillerusr
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <dlfcn.h>
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#include <unwind.h>
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#include <android/log.h>
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#include "tier0/dbg.h"
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#include <stdlib.h>
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#include <inttypes.h>
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#include "libunwind/libunwind.h"
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struct sigaction old_sa;
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#define IN_LIBGCC2 1 // means we want to define __cxxabiv1::__cxa_demangle
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namespace __cxxabiv1
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{
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extern "C"
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{
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#include "demangle/cp-demangle.c"
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}
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}
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#define MAX_FRAMES 2048
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struct backtrace_t
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{
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int count;
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uintptr_t frames[MAX_FRAMES];
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};
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#define Log(msg) __android_log_print(ANDROID_LOG_DEBUG, "SRCENG", "%s", msg); DebugLogger()->Write(msg);
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void printPC(void *pc)
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{
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char message[4096];
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const char* symbol = "unknown";
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Dl_info info = { 0 };
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const char *fname = "unknown";
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if( dladdr(pc, &info) <= 0 )
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{
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snprintf( message, sizeof(message), "0x%" PRIXPTR "\n", (uintptr_t)pc );
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Log(message);
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return;
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}
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if( info.dli_fname )
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fname = info.dli_fname;
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if( info.dli_sname )
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symbol = info.dli_sname;
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int status = 0;
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char *demangled = __cxxabiv1::__cxa_demangle(symbol, 0, 0, &status);
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if( NULL != demangled && 0 == status )
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symbol = demangled;
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uintptr_t relative_addr = (uintptr_t)pc - (uintptr_t)info.dli_fbase;
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snprintf( message, sizeof(message), "0x%" PRIXPTR ":\t%s (base=0x%" PRIXPTR ", %s)\n", relative_addr, symbol, (uintptr_t)info.dli_fbase, fname );
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Log(message);
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}
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_Unwind_Reason_Code UnwindBacktraceCallback(struct _Unwind_Context* unwind_context, void* state_voidp)
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{
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uintptr_t pc = _Unwind_GetIP(unwind_context);
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backtrace_t *bt = (backtrace_t*)state_voidp;
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if( bt->count < MAX_FRAMES )
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bt->frames[bt->count++] = pc;
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else
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return _URC_END_OF_STACK;
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return _URC_NO_REASON;
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}
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static void CrashHandler( int sig, siginfo_t *si, void *uc)
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{
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static char message[4096], symbol[256];
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int len, line, logfd, i = 0;
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const ucontext_t* signal_ucontext = (ucontext_t*)uc;
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const mcontext_t* signal_mcontext = &(signal_ucontext->uc_mcontext);
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#ifdef __aarch64__
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// Doesn't work good on armv7a
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static backtrace_t bt;
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bt.count = 0;
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_Unwind_Backtrace(UnwindBacktraceCallback, &bt);
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Log(">>> crash report begin\n");
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snprintf(message, sizeof(message), "Signal=%d, errno=%d, code=%d, addr=0x%" PRIXPTR "\n", sig, si->si_errno, si->si_code, (uintptr_t)si->si_addr);
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Log(message);
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for( int i = 0; i < bt.count; i++ )
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{
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printPC( (void*)bt.frames[i] );
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}
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#else
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Log(">>> crash report begin\n");
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snprintf(message, sizeof(message), "Signal=%d, errno=%d, code=%d, addr=0x%" PRIXPTR "\n", sig, si->si_errno, si->si_code, (uintptr_t)si->si_addr);
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Log(message);
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// Initialize unw_context and unw_cursor.
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unw_context_t unw_context = {};
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unw_getcontext(&unw_context);
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unw_cursor_t unw_cursor = {};
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unw_init_local(&unw_cursor, &unw_context);
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while (unw_step(&unw_cursor) > 0) {
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unw_word_t ip = 0;
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unw_get_reg(&unw_cursor, UNW_REG_IP, &ip);
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printPC( (void*)ip );
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}
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#endif
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Log(">>> crash report end\n");
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if (old_sa.sa_sigaction)
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(*old_sa.sa_sigaction)(sig, si, uc);
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else if(old_sa.sa_handler)
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(*old_sa.sa_handler)(sig);
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}
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void InitCrashHandler()
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{
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struct sigaction act;
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act.sa_sigaction = CrashHandler;
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act.sa_flags = SA_SIGINFO | SA_ONSTACK;
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sigaction(SIGSEGV, &act, &old_sa);
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sigaction(SIGABRT, &act, &old_sa);
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sigaction(SIGBUS, &act, &old_sa);
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sigaction(SIGFPE, &act, &old_sa);
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sigaction(SIGTRAP, &act, &old_sa);
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}
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