1 //===-- LinuxSignals.cpp --------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "LinuxSignals.h" 10 11 #ifdef __linux__ 12 #include <csignal> 13 14 #ifndef SEGV_BNDERR 15 #define SEGV_BNDERR 3 16 #endif 17 #ifndef SEGV_MTEAERR 18 #define SEGV_MTEAERR 8 19 #endif 20 #ifndef SEGV_MTESERR 21 #define SEGV_MTESERR 9 22 #endif 23 24 #define ADD_SIGCODE(signal_name, signal_value, code_name, code_value, ...) \ 25 static_assert(signal_name == signal_value, \ 26 "Value mismatch for signal number " #signal_name); \ 27 static_assert(code_name == code_value, \ 28 "Value mismatch for signal code " #code_name); \ 29 AddSignalCode(signal_value, code_value, __VA_ARGS__) 30 #else 31 #define ADD_SIGCODE(signal_name, signal_value, code_name, code_value, ...) \ 32 AddSignalCode(signal_value, code_value, __VA_ARGS__) 33 #endif /* ifdef __linux__ */ 34 35 using namespace lldb_private; 36 37 LinuxSignals::LinuxSignals() : UnixSignals() { Reset(); } 38 39 void LinuxSignals::Reset() { 40 m_signals.clear(); 41 // clang-format off 42 // SIGNO NAME SUPPRESS STOP NOTIFY DESCRIPTION 43 // ====== ============== ======== ====== ====== =================================================== 44 AddSignal(1, "SIGHUP", false, true, true, "hangup"); 45 AddSignal(2, "SIGINT", true, true, true, "interrupt"); 46 AddSignal(3, "SIGQUIT", false, true, true, "quit"); 47 48 AddSignal(4, "SIGILL", false, true, true, "illegal instruction"); 49 ADD_SIGCODE(SIGILL, 4, ILL_ILLOPC, 1, "illegal opcode"); 50 ADD_SIGCODE(SIGILL, 4, ILL_ILLOPN, 2, "illegal operand"); 51 ADD_SIGCODE(SIGILL, 4, ILL_ILLADR, 3, "illegal addressing mode"); 52 ADD_SIGCODE(SIGILL, 4, ILL_ILLTRP, 4, "illegal trap"); 53 ADD_SIGCODE(SIGILL, 4, ILL_PRVOPC, 5, "privileged opcode"); 54 ADD_SIGCODE(SIGILL, 4, ILL_PRVREG, 6, "privileged register"); 55 ADD_SIGCODE(SIGILL, 4, ILL_COPROC, 7, "coprocessor error"); 56 ADD_SIGCODE(SIGILL, 4, ILL_BADSTK, 8, "internal stack error"); 57 58 AddSignal(5, "SIGTRAP", true, true, true, "trace trap (not reset when caught)"); 59 AddSignal(6, "SIGABRT", false, true, true, "abort()/IOT trap", "SIGIOT"); 60 61 AddSignal(7, "SIGBUS", false, true, true, "bus error"); 62 ADD_SIGCODE(SIGBUS, 7, BUS_ADRALN, 1, "illegal alignment"); 63 ADD_SIGCODE(SIGBUS, 7, BUS_ADRERR, 2, "illegal address"); 64 ADD_SIGCODE(SIGBUS, 7, BUS_OBJERR, 3, "hardware error"); 65 66 AddSignal(8, "SIGFPE", false, true, true, "floating point exception"); 67 ADD_SIGCODE(SIGFPE, 8, FPE_INTDIV, 1, "integer divide by zero"); 68 ADD_SIGCODE(SIGFPE, 8, FPE_INTOVF, 2, "integer overflow"); 69 ADD_SIGCODE(SIGFPE, 8, FPE_FLTDIV, 3, "floating point divide by zero"); 70 ADD_SIGCODE(SIGFPE, 8, FPE_FLTOVF, 4, "floating point overflow"); 71 ADD_SIGCODE(SIGFPE, 8, FPE_FLTUND, 5, "floating point underflow"); 72 ADD_SIGCODE(SIGFPE, 8, FPE_FLTRES, 6, "floating point inexact result"); 73 ADD_SIGCODE(SIGFPE, 8, FPE_FLTINV, 7, "floating point invalid operation"); 74 ADD_SIGCODE(SIGFPE, 8, FPE_FLTSUB, 8, "subscript out of range"); 75 76 AddSignal(9, "SIGKILL", false, true, true, "kill"); 77 AddSignal(10, "SIGUSR1", false, true, true, "user defined signal 1"); 78 79 AddSignal(11, "SIGSEGV", false, true, true, "segmentation violation"); 80 ADD_SIGCODE(SIGSEGV, 11, SEGV_MAPERR, 1, "address not mapped to object", SignalCodePrintOption::Address); 81 ADD_SIGCODE(SIGSEGV, 11, SEGV_ACCERR, 2, "invalid permissions for mapped object", SignalCodePrintOption::Address); 82 ADD_SIGCODE(SIGSEGV, 11, SEGV_BNDERR, 3, "failed address bounds checks", SignalCodePrintOption::Bounds); 83 ADD_SIGCODE(SIGSEGV, 11, SEGV_MTEAERR, 8, "async tag check fault"); 84 ADD_SIGCODE(SIGSEGV, 11, SEGV_MTESERR, 9, "sync tag check fault", SignalCodePrintOption::Address); 85 // Some platforms will occasionally send nonstandard spurious SI_KERNEL 86 // codes. One way to get this is via unaligned SIMD loads. Treat it as invalid address. 87 ADD_SIGCODE(SIGSEGV, 11, SI_KERNEL, 0x80, "invalid address", SignalCodePrintOption::Address); 88 89 AddSignal(12, "SIGUSR2", false, true, true, "user defined signal 2"); 90 AddSignal(13, "SIGPIPE", false, true, true, "write to pipe with reading end closed"); 91 AddSignal(14, "SIGALRM", false, false, false, "alarm"); 92 AddSignal(15, "SIGTERM", false, true, true, "termination requested"); 93 AddSignal(16, "SIGSTKFLT", false, true, true, "stack fault"); 94 AddSignal(17, "SIGCHLD", false, false, true, "child status has changed", "SIGCLD"); 95 AddSignal(18, "SIGCONT", false, false, true, "process continue"); 96 AddSignal(19, "SIGSTOP", true, true, true, "process stop"); 97 AddSignal(20, "SIGTSTP", false, true, true, "tty stop"); 98 AddSignal(21, "SIGTTIN", false, true, true, "background tty read"); 99 AddSignal(22, "SIGTTOU", false, true, true, "background tty write"); 100 AddSignal(23, "SIGURG", false, true, true, "urgent data on socket"); 101 AddSignal(24, "SIGXCPU", false, true, true, "CPU resource exceeded"); 102 AddSignal(25, "SIGXFSZ", false, true, true, "file size limit exceeded"); 103 AddSignal(26, "SIGVTALRM", false, true, true, "virtual time alarm"); 104 AddSignal(27, "SIGPROF", false, false, false, "profiling time alarm"); 105 AddSignal(28, "SIGWINCH", false, true, true, "window size changes"); 106 AddSignal(29, "SIGIO", false, true, true, "input/output ready/Pollable event", "SIGPOLL"); 107 AddSignal(30, "SIGPWR", false, true, true, "power failure"); 108 AddSignal(31, "SIGSYS", false, true, true, "invalid system call"); 109 AddSignal(32, "SIG32", false, false, false, "threading library internal signal 1"); 110 AddSignal(33, "SIG33", false, false, false, "threading library internal signal 2"); 111 AddSignal(34, "SIGRTMIN", false, false, false, "real time signal 0"); 112 AddSignal(35, "SIGRTMIN+1", false, false, false, "real time signal 1"); 113 AddSignal(36, "SIGRTMIN+2", false, false, false, "real time signal 2"); 114 AddSignal(37, "SIGRTMIN+3", false, false, false, "real time signal 3"); 115 AddSignal(38, "SIGRTMIN+4", false, false, false, "real time signal 4"); 116 AddSignal(39, "SIGRTMIN+5", false, false, false, "real time signal 5"); 117 AddSignal(40, "SIGRTMIN+6", false, false, false, "real time signal 6"); 118 AddSignal(41, "SIGRTMIN+7", false, false, false, "real time signal 7"); 119 AddSignal(42, "SIGRTMIN+8", false, false, false, "real time signal 8"); 120 AddSignal(43, "SIGRTMIN+9", false, false, false, "real time signal 9"); 121 AddSignal(44, "SIGRTMIN+10", false, false, false, "real time signal 10"); 122 AddSignal(45, "SIGRTMIN+11", false, false, false, "real time signal 11"); 123 AddSignal(46, "SIGRTMIN+12", false, false, false, "real time signal 12"); 124 AddSignal(47, "SIGRTMIN+13", false, false, false, "real time signal 13"); 125 AddSignal(48, "SIGRTMIN+14", false, false, false, "real time signal 14"); 126 AddSignal(49, "SIGRTMIN+15", false, false, false, "real time signal 15"); 127 AddSignal(50, "SIGRTMAX-14", false, false, false, "real time signal 16"); // switching to SIGRTMAX-xxx to match "kill -l" output 128 AddSignal(51, "SIGRTMAX-13", false, false, false, "real time signal 17"); 129 AddSignal(52, "SIGRTMAX-12", false, false, false, "real time signal 18"); 130 AddSignal(53, "SIGRTMAX-11", false, false, false, "real time signal 19"); 131 AddSignal(54, "SIGRTMAX-10", false, false, false, "real time signal 20"); 132 AddSignal(55, "SIGRTMAX-9", false, false, false, "real time signal 21"); 133 AddSignal(56, "SIGRTMAX-8", false, false, false, "real time signal 22"); 134 AddSignal(57, "SIGRTMAX-7", false, false, false, "real time signal 23"); 135 AddSignal(58, "SIGRTMAX-6", false, false, false, "real time signal 24"); 136 AddSignal(59, "SIGRTMAX-5", false, false, false, "real time signal 25"); 137 AddSignal(60, "SIGRTMAX-4", false, false, false, "real time signal 26"); 138 AddSignal(61, "SIGRTMAX-3", false, false, false, "real time signal 27"); 139 AddSignal(62, "SIGRTMAX-2", false, false, false, "real time signal 28"); 140 AddSignal(63, "SIGRTMAX-1", false, false, false, "real time signal 29"); 141 AddSignal(64, "SIGRTMAX", false, false, false, "real time signal 30"); 142 // clang-format on 143 } 144