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