808142876c
Summary: A *.cpp file header in LLDB (and in LLDB) should like this: ``` //===-- TestUtilities.cpp -------------------------------------------------===// ``` However in LLDB most of our source files have arbitrary changes to this format and these changes are spreading through LLDB as folks usually just use the existing source files as templates for their new files (most notably the unnecessary editor language indicator `-*- C++ -*-` is spreading and in every review someone is pointing out that this is wrong, resulting in people pointing out that this is done in the same way in other files). This patch removes most of these inconsistencies including the editor language indicators, all the different missing/additional '-' characters, files that center the file name, missing trailing `===//` (mostly caused by clang-format breaking the line). Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere Reviewed By: JDevlieghere Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D73258
331 lines
9.0 KiB
C++
331 lines
9.0 KiB
C++
//===-- CrashReason.cpp ---------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "CrashReason.h"
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#include "llvm/Support/raw_ostream.h"
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#include <sstream>
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namespace {
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void AppendFaultAddr(std::string &str, lldb::addr_t addr) {
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std::stringstream ss;
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ss << " (fault address: 0x" << std::hex << addr << ")";
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str += ss.str();
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}
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#if defined(si_lower) && defined(si_upper)
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void AppendBounds(std::string &str, lldb::addr_t lower_bound,
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lldb::addr_t upper_bound, lldb::addr_t addr) {
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llvm::raw_string_ostream stream(str);
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if ((unsigned long)addr < lower_bound)
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stream << ": lower bound violation ";
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else
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stream << ": upper bound violation ";
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stream << "(fault address: 0x";
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stream.write_hex(addr);
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stream << ", lower bound: 0x";
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stream.write_hex(lower_bound);
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stream << ", upper bound: 0x";
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stream.write_hex(upper_bound);
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stream << ")";
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stream.flush();
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}
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#endif
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CrashReason GetCrashReasonForSIGSEGV(const siginfo_t &info) {
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assert(info.si_signo == SIGSEGV);
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switch (info.si_code) {
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#ifdef SI_KERNEL
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case SI_KERNEL:
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// Some platforms will occasionally send nonstandard spurious SI_KERNEL
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// codes. One way to get this is via unaligned SIMD loads.
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return CrashReason::eInvalidAddress; // for lack of anything better
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#endif
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case SEGV_MAPERR:
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return CrashReason::eInvalidAddress;
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case SEGV_ACCERR:
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return CrashReason::ePrivilegedAddress;
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#ifndef SEGV_BNDERR
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#define SEGV_BNDERR 3
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#endif
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case SEGV_BNDERR:
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return CrashReason::eBoundViolation;
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}
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return CrashReason::eInvalidCrashReason;
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}
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CrashReason GetCrashReasonForSIGILL(const siginfo_t &info) {
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assert(info.si_signo == SIGILL);
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switch (info.si_code) {
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case ILL_ILLOPC:
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return CrashReason::eIllegalOpcode;
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case ILL_ILLOPN:
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return CrashReason::eIllegalOperand;
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case ILL_ILLADR:
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return CrashReason::eIllegalAddressingMode;
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case ILL_ILLTRP:
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return CrashReason::eIllegalTrap;
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case ILL_PRVOPC:
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return CrashReason::ePrivilegedOpcode;
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case ILL_PRVREG:
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return CrashReason::ePrivilegedRegister;
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case ILL_COPROC:
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return CrashReason::eCoprocessorError;
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case ILL_BADSTK:
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return CrashReason::eInternalStackError;
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}
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return CrashReason::eInvalidCrashReason;
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}
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CrashReason GetCrashReasonForSIGFPE(const siginfo_t &info) {
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assert(info.si_signo == SIGFPE);
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switch (info.si_code) {
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case FPE_INTDIV:
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return CrashReason::eIntegerDivideByZero;
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case FPE_INTOVF:
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return CrashReason::eIntegerOverflow;
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case FPE_FLTDIV:
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return CrashReason::eFloatDivideByZero;
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case FPE_FLTOVF:
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return CrashReason::eFloatOverflow;
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case FPE_FLTUND:
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return CrashReason::eFloatUnderflow;
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case FPE_FLTRES:
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return CrashReason::eFloatInexactResult;
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case FPE_FLTINV:
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return CrashReason::eFloatInvalidOperation;
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case FPE_FLTSUB:
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return CrashReason::eFloatSubscriptRange;
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}
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return CrashReason::eInvalidCrashReason;
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}
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CrashReason GetCrashReasonForSIGBUS(const siginfo_t &info) {
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assert(info.si_signo == SIGBUS);
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switch (info.si_code) {
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case BUS_ADRALN:
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return CrashReason::eIllegalAlignment;
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case BUS_ADRERR:
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return CrashReason::eIllegalAddress;
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case BUS_OBJERR:
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return CrashReason::eHardwareError;
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}
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return CrashReason::eInvalidCrashReason;
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}
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}
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std::string GetCrashReasonString(CrashReason reason, const siginfo_t &info) {
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std::string str;
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// make sure that siginfo_t has the bound fields available.
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#if defined(si_lower) && defined(si_upper)
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if (reason == CrashReason::eBoundViolation) {
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str = "signal SIGSEGV";
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AppendBounds(str, reinterpret_cast<uintptr_t>(info.si_lower),
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reinterpret_cast<uintptr_t>(info.si_upper),
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reinterpret_cast<uintptr_t>(info.si_addr));
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return str;
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}
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#endif
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return GetCrashReasonString(reason,
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reinterpret_cast<uintptr_t>(info.si_addr));
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}
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std::string GetCrashReasonString(CrashReason reason, lldb::addr_t fault_addr) {
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std::string str;
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switch (reason) {
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default:
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str = "unknown crash reason";
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break;
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case CrashReason::eInvalidAddress:
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str = "signal SIGSEGV: invalid address";
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AppendFaultAddr(str, fault_addr);
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break;
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case CrashReason::ePrivilegedAddress:
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str = "signal SIGSEGV: address access protected";
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AppendFaultAddr(str, fault_addr);
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break;
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case CrashReason::eBoundViolation:
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str = "signal SIGSEGV: bound violation";
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break;
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case CrashReason::eIllegalOpcode:
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str = "signal SIGILL: illegal instruction";
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break;
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case CrashReason::eIllegalOperand:
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str = "signal SIGILL: illegal instruction operand";
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break;
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case CrashReason::eIllegalAddressingMode:
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str = "signal SIGILL: illegal addressing mode";
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break;
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case CrashReason::eIllegalTrap:
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str = "signal SIGILL: illegal trap";
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break;
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case CrashReason::ePrivilegedOpcode:
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str = "signal SIGILL: privileged instruction";
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break;
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case CrashReason::ePrivilegedRegister:
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str = "signal SIGILL: privileged register";
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break;
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case CrashReason::eCoprocessorError:
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str = "signal SIGILL: coprocessor error";
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break;
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case CrashReason::eInternalStackError:
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str = "signal SIGILL: internal stack error";
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break;
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case CrashReason::eIllegalAlignment:
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str = "signal SIGBUS: illegal alignment";
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break;
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case CrashReason::eIllegalAddress:
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str = "signal SIGBUS: illegal address";
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break;
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case CrashReason::eHardwareError:
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str = "signal SIGBUS: hardware error";
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break;
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case CrashReason::eIntegerDivideByZero:
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str = "signal SIGFPE: integer divide by zero";
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break;
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case CrashReason::eIntegerOverflow:
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str = "signal SIGFPE: integer overflow";
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break;
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case CrashReason::eFloatDivideByZero:
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str = "signal SIGFPE: floating point divide by zero";
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break;
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case CrashReason::eFloatOverflow:
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str = "signal SIGFPE: floating point overflow";
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break;
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case CrashReason::eFloatUnderflow:
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str = "signal SIGFPE: floating point underflow";
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break;
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case CrashReason::eFloatInexactResult:
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str = "signal SIGFPE: inexact floating point result";
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break;
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case CrashReason::eFloatInvalidOperation:
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str = "signal SIGFPE: invalid floating point operation";
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break;
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case CrashReason::eFloatSubscriptRange:
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str = "signal SIGFPE: invalid floating point subscript range";
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break;
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}
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return str;
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}
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const char *CrashReasonAsString(CrashReason reason) {
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const char *str = nullptr;
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switch (reason) {
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case CrashReason::eInvalidCrashReason:
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str = "eInvalidCrashReason";
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break;
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// SIGSEGV crash reasons.
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case CrashReason::eInvalidAddress:
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str = "eInvalidAddress";
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break;
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case CrashReason::ePrivilegedAddress:
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str = "ePrivilegedAddress";
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break;
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case CrashReason::eBoundViolation:
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str = "eBoundViolation";
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break;
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// SIGILL crash reasons.
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case CrashReason::eIllegalOpcode:
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str = "eIllegalOpcode";
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break;
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case CrashReason::eIllegalOperand:
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str = "eIllegalOperand";
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break;
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case CrashReason::eIllegalAddressingMode:
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str = "eIllegalAddressingMode";
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break;
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case CrashReason::eIllegalTrap:
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str = "eIllegalTrap";
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break;
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case CrashReason::ePrivilegedOpcode:
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str = "ePrivilegedOpcode";
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break;
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case CrashReason::ePrivilegedRegister:
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str = "ePrivilegedRegister";
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break;
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case CrashReason::eCoprocessorError:
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str = "eCoprocessorError";
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break;
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case CrashReason::eInternalStackError:
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str = "eInternalStackError";
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break;
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// SIGBUS crash reasons:
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case CrashReason::eIllegalAlignment:
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str = "eIllegalAlignment";
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break;
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case CrashReason::eIllegalAddress:
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str = "eIllegalAddress";
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break;
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case CrashReason::eHardwareError:
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str = "eHardwareError";
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break;
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// SIGFPE crash reasons:
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case CrashReason::eIntegerDivideByZero:
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str = "eIntegerDivideByZero";
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break;
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case CrashReason::eIntegerOverflow:
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str = "eIntegerOverflow";
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break;
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case CrashReason::eFloatDivideByZero:
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str = "eFloatDivideByZero";
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break;
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case CrashReason::eFloatOverflow:
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str = "eFloatOverflow";
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break;
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case CrashReason::eFloatUnderflow:
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str = "eFloatUnderflow";
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break;
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case CrashReason::eFloatInexactResult:
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str = "eFloatInexactResult";
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break;
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case CrashReason::eFloatInvalidOperation:
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str = "eFloatInvalidOperation";
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break;
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case CrashReason::eFloatSubscriptRange:
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str = "eFloatSubscriptRange";
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break;
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}
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return str;
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}
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CrashReason GetCrashReason(const siginfo_t &info) {
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switch (info.si_signo) {
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case SIGSEGV:
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return GetCrashReasonForSIGSEGV(info);
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case SIGBUS:
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return GetCrashReasonForSIGBUS(info);
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case SIGFPE:
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return GetCrashReasonForSIGFPE(info);
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case SIGILL:
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return GetCrashReasonForSIGILL(info);
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}
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assert(false && "unexpected signal");
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return CrashReason::eInvalidCrashReason;
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}
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