//===-- 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" // mips-linux debugging is not supported and mips uses different numbers for // some signals (e.g. SIGBUS) on linux, so we skip the static checks below. The // definitions here can be used for debugging non-mips targets on a mips-hosted // lldb. #if defined(__linux__) && !defined(__mips__) #include #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 #ifndef SI_QUEUE #define SI_QUEUE -1 #endif #ifndef SI_TIMER #define SI_TIMER -2 #endif #ifndef SI_MESGQ #define SI_MESGQ -3 #endif #ifndef SI_ASYNCIO #define SI_ASYNCIO -4 #endif #ifndef SI_SIGIO #define SI_SIGIO -5 #endif #ifndef SI_TKILL #define SI_TKILL -6 #endif #ifndef SI_DETHREAD #define SI_DETHREAD -7 #endif #ifndef SI_ASYNCNL #define SI_ASYNCNL -60 #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 /* if defined(__linux__) && !defined(__mips__) */ // See siginfo.h in the Linux Kernel, these codes can be sent for any signal. #define ADD_LINUX_SIGNAL(signo, name, ...) \ AddSignal(signo, name, __VA_ARGS__); \ ADD_SIGCODE(signo, signo, SI_USER, 0, "sent by kill, sigsend or raise", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_KERNEL, 0x80, "sent by kernel (SI_KERNEL)", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_QUEUE, -1, "sent by sigqueue", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_TIMER, -2, "sent by timer expiration", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_MESGQ, -3, \ "sent by real time mesq state change", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_ASYNCIO, -4, "sent by AIO completion", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_SIGIO, -5, "sent by queued SIGIO", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_TKILL, -6, "sent by tkill system call", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_DETHREAD, -7, \ "sent by execve() killing subsidiary threads", \ SignalCodePrintOption::Sender); \ ADD_SIGCODE(signo, signo, SI_ASYNCNL, -60, \ "sent by glibc async name lookup completion", \ SignalCodePrintOption::Sender); using namespace lldb_private; LinuxSignals::LinuxSignals() : UnixSignals() { Reset(); } void LinuxSignals::Reset() { m_signals.clear(); // clang-format off // SIGNO NAME SUPPRESS STOP NOTIFY DESCRIPTION // ====== ============== ======== ====== ====== =================================================== ADD_LINUX_SIGNAL(1, "SIGHUP", false, true, true, "hangup"); ADD_LINUX_SIGNAL(2, "SIGINT", true, true, true, "interrupt"); ADD_LINUX_SIGNAL(3, "SIGQUIT", false, true, true, "quit"); ADD_LINUX_SIGNAL(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"); ADD_LINUX_SIGNAL(5, "SIGTRAP", true, true, true, "trace trap (not reset when caught)"); ADD_LINUX_SIGNAL(6, "SIGABRT", false, true, true, "abort()/IOT trap", "SIGIOT"); ADD_LINUX_SIGNAL(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"); ADD_LINUX_SIGNAL(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"); ADD_LINUX_SIGNAL(9, "SIGKILL", false, true, true, "kill"); ADD_LINUX_SIGNAL(10, "SIGUSR1", false, true, true, "user defined signal 1"); ADD_LINUX_SIGNAL(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); ADD_LINUX_SIGNAL(12, "SIGUSR2", false, true, true, "user defined signal 2"); ADD_LINUX_SIGNAL(13, "SIGPIPE", false, true, true, "write to pipe with reading end closed"); ADD_LINUX_SIGNAL(14, "SIGALRM", false, false, false, "alarm"); ADD_LINUX_SIGNAL(15, "SIGTERM", false, true, true, "termination requested"); ADD_LINUX_SIGNAL(16, "SIGSTKFLT", false, true, true, "stack fault"); ADD_LINUX_SIGNAL(17, "SIGCHLD", false, false, true, "child status has changed", "SIGCLD"); ADD_LINUX_SIGNAL(18, "SIGCONT", false, false, true, "process continue"); ADD_LINUX_SIGNAL(19, "SIGSTOP", true, true, true, "process stop"); ADD_LINUX_SIGNAL(20, "SIGTSTP", false, true, true, "tty stop"); ADD_LINUX_SIGNAL(21, "SIGTTIN", false, true, true, "background tty read"); ADD_LINUX_SIGNAL(22, "SIGTTOU", false, true, true, "background tty write"); ADD_LINUX_SIGNAL(23, "SIGURG", false, true, true, "urgent data on socket"); ADD_LINUX_SIGNAL(24, "SIGXCPU", false, true, true, "CPU resource exceeded"); ADD_LINUX_SIGNAL(25, "SIGXFSZ", false, true, true, "file size limit exceeded"); ADD_LINUX_SIGNAL(26, "SIGVTALRM", false, true, true, "virtual time alarm"); ADD_LINUX_SIGNAL(27, "SIGPROF", false, false, false, "profiling time alarm"); ADD_LINUX_SIGNAL(28, "SIGWINCH", false, true, true, "window size changes"); ADD_LINUX_SIGNAL(29, "SIGIO", false, true, true, "input/output ready/Pollable event", "SIGPOLL"); ADD_LINUX_SIGNAL(30, "SIGPWR", false, true, true, "power failure"); ADD_LINUX_SIGNAL(31, "SIGSYS", false, true, true, "invalid system call"); ADD_LINUX_SIGNAL(32, "SIG32", false, false, false, "threading library internal signal 1"); ADD_LINUX_SIGNAL(33, "SIG33", false, false, false, "threading library internal signal 2"); ADD_LINUX_SIGNAL(34, "SIGRTMIN", false, false, false, "real time signal 0"); ADD_LINUX_SIGNAL(35, "SIGRTMIN+1", false, false, false, "real time signal 1"); ADD_LINUX_SIGNAL(36, "SIGRTMIN+2", false, false, false, "real time signal 2"); ADD_LINUX_SIGNAL(37, "SIGRTMIN+3", false, false, false, "real time signal 3"); ADD_LINUX_SIGNAL(38, "SIGRTMIN+4", false, false, false, "real time signal 4"); ADD_LINUX_SIGNAL(39, "SIGRTMIN+5", false, false, false, "real time signal 5"); ADD_LINUX_SIGNAL(40, "SIGRTMIN+6", false, false, false, "real time signal 6"); ADD_LINUX_SIGNAL(41, "SIGRTMIN+7", false, false, false, "real time signal 7"); ADD_LINUX_SIGNAL(42, "SIGRTMIN+8", false, false, false, "real time signal 8"); ADD_LINUX_SIGNAL(43, "SIGRTMIN+9", false, false, false, "real time signal 9"); ADD_LINUX_SIGNAL(44, "SIGRTMIN+10", false, false, false, "real time signal 10"); ADD_LINUX_SIGNAL(45, "SIGRTMIN+11", false, false, false, "real time signal 11"); ADD_LINUX_SIGNAL(46, "SIGRTMIN+12", false, false, false, "real time signal 12"); ADD_LINUX_SIGNAL(47, "SIGRTMIN+13", false, false, false, "real time signal 13"); ADD_LINUX_SIGNAL(48, "SIGRTMIN+14", false, false, false, "real time signal 14"); ADD_LINUX_SIGNAL(49, "SIGRTMIN+15", false, false, false, "real time signal 15"); ADD_LINUX_SIGNAL(50, "SIGRTMAX-14", false, false, false, "real time signal 16"); // switching to SIGRTMAX-xxx to match "kill -l" output ADD_LINUX_SIGNAL(51, "SIGRTMAX-13", false, false, false, "real time signal 17"); ADD_LINUX_SIGNAL(52, "SIGRTMAX-12", false, false, false, "real time signal 18"); ADD_LINUX_SIGNAL(53, "SIGRTMAX-11", false, false, false, "real time signal 19"); ADD_LINUX_SIGNAL(54, "SIGRTMAX-10", false, false, false, "real time signal 20"); ADD_LINUX_SIGNAL(55, "SIGRTMAX-9", false, false, false, "real time signal 21"); ADD_LINUX_SIGNAL(56, "SIGRTMAX-8", false, false, false, "real time signal 22"); ADD_LINUX_SIGNAL(57, "SIGRTMAX-7", false, false, false, "real time signal 23"); ADD_LINUX_SIGNAL(58, "SIGRTMAX-6", false, false, false, "real time signal 24"); ADD_LINUX_SIGNAL(59, "SIGRTMAX-5", false, false, false, "real time signal 25"); ADD_LINUX_SIGNAL(60, "SIGRTMAX-4", false, false, false, "real time signal 26"); ADD_LINUX_SIGNAL(61, "SIGRTMAX-3", false, false, false, "real time signal 27"); ADD_LINUX_SIGNAL(62, "SIGRTMAX-2", false, false, false, "real time signal 28"); ADD_LINUX_SIGNAL(63, "SIGRTMAX-1", false, false, false, "real time signal 29"); ADD_LINUX_SIGNAL(64, "SIGRTMAX", false, false, false, "real time signal 30"); // clang-format on }