654 lines
16 KiB
C
654 lines
16 KiB
C
/* Target signal translation functions for GDB.
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Copyright (C) 1990-2018 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "common-defs.h"
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#include "gdb_signals.h"
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struct gdbarch;
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/* Always use __SIGRTMIN if it's available. SIGRTMIN is the lowest
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_available_ realtime signal, not the lowest supported; glibc takes
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several for its own use. */
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#ifndef REALTIME_LO
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# if defined(__SIGRTMIN)
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# define REALTIME_LO __SIGRTMIN
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# define REALTIME_HI (__SIGRTMAX + 1)
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# elif defined(SIGRTMIN)
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# define REALTIME_LO SIGRTMIN
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# define REALTIME_HI (SIGRTMAX + 1)
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# endif
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#endif
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/* This table must match in order and size the signals in enum
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gdb_signal. */
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static const struct {
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const char *symbol;
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const char *name;
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const char *string;
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} signals [] =
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{
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#define SET(symbol, constant, name, string) { #symbol, name, string },
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#include "gdb/signals.def"
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#undef SET
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};
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const char *
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gdb_signal_to_symbol_string (enum gdb_signal sig)
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{
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gdb_assert ((int) sig >= GDB_SIGNAL_FIRST && (int) sig <= GDB_SIGNAL_LAST);
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return signals[sig].symbol;
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}
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/* Return the string for a signal. */
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const char *
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gdb_signal_to_string (enum gdb_signal sig)
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{
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if ((int) sig >= GDB_SIGNAL_FIRST && (int) sig <= GDB_SIGNAL_LAST)
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return signals[sig].string;
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else
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return signals[GDB_SIGNAL_UNKNOWN].string;
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}
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/* Return the name for a signal. */
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const char *
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gdb_signal_to_name (enum gdb_signal sig)
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{
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if ((int) sig >= GDB_SIGNAL_FIRST && (int) sig <= GDB_SIGNAL_LAST
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&& signals[sig].name != NULL)
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return signals[sig].name;
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else
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/* I think the code which prints this will always print it along
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with the string, so no need to be verbose (very old comment). */
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return "?";
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}
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/* Given a name, return its signal. */
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enum gdb_signal
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gdb_signal_from_name (const char *name)
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{
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enum gdb_signal sig;
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/* It's possible we also should allow "SIGCLD" as well as "SIGCHLD"
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for GDB_SIGNAL_SIGCHLD. SIGIOT, on the other hand, is more
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questionable; seems like by now people should call it SIGABRT
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instead. */
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/* This ugly cast brought to you by the native VAX compiler. */
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for (sig = GDB_SIGNAL_HUP;
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sig < GDB_SIGNAL_LAST;
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sig = (enum gdb_signal) ((int) sig + 1))
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if (signals[sig].name != NULL
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&& strcmp (name, signals[sig].name) == 0)
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return sig;
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return GDB_SIGNAL_UNKNOWN;
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}
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/* The following functions are to help certain targets deal
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with the signal/waitstatus stuff. They could just as well be in
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a file called native-utils.c or unixwaitstatus-utils.c or whatever. */
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/* Convert host signal to our signals. */
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enum gdb_signal
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gdb_signal_from_host (int hostsig)
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{
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/* A switch statement would make sense but would require special
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kludges to deal with the cases where more than one signal has the
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same number. Signals are ordered ANSI-standard signals first,
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other signals second, with signals in each block ordered by their
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numerical values on a typical POSIX platform. */
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if (hostsig == 0)
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return GDB_SIGNAL_0;
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/* SIGINT, SIGILL, SIGABRT, SIGFPE, SIGSEGV and SIGTERM
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are ANSI-standard signals and are always available. */
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if (hostsig == SIGINT)
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return GDB_SIGNAL_INT;
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if (hostsig == SIGILL)
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return GDB_SIGNAL_ILL;
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if (hostsig == SIGABRT)
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return GDB_SIGNAL_ABRT;
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if (hostsig == SIGFPE)
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return GDB_SIGNAL_FPE;
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if (hostsig == SIGSEGV)
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return GDB_SIGNAL_SEGV;
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if (hostsig == SIGTERM)
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return GDB_SIGNAL_TERM;
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/* All other signals need preprocessor conditionals. */
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#if defined (SIGHUP)
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if (hostsig == SIGHUP)
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return GDB_SIGNAL_HUP;
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#endif
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#if defined (SIGQUIT)
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if (hostsig == SIGQUIT)
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return GDB_SIGNAL_QUIT;
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#endif
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#if defined (SIGTRAP)
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if (hostsig == SIGTRAP)
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return GDB_SIGNAL_TRAP;
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#endif
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#if defined (SIGEMT)
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if (hostsig == SIGEMT)
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return GDB_SIGNAL_EMT;
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#endif
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#if defined (SIGKILL)
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if (hostsig == SIGKILL)
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return GDB_SIGNAL_KILL;
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#endif
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#if defined (SIGBUS)
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if (hostsig == SIGBUS)
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return GDB_SIGNAL_BUS;
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#endif
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#if defined (SIGSYS)
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if (hostsig == SIGSYS)
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return GDB_SIGNAL_SYS;
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#endif
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#if defined (SIGPIPE)
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if (hostsig == SIGPIPE)
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return GDB_SIGNAL_PIPE;
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#endif
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#if defined (SIGALRM)
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if (hostsig == SIGALRM)
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return GDB_SIGNAL_ALRM;
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#endif
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#if defined (SIGUSR1)
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if (hostsig == SIGUSR1)
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return GDB_SIGNAL_USR1;
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#endif
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#if defined (SIGUSR2)
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if (hostsig == SIGUSR2)
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return GDB_SIGNAL_USR2;
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#endif
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#if defined (SIGCLD)
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if (hostsig == SIGCLD)
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return GDB_SIGNAL_CHLD;
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#endif
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#if defined (SIGCHLD)
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if (hostsig == SIGCHLD)
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return GDB_SIGNAL_CHLD;
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#endif
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#if defined (SIGPWR)
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if (hostsig == SIGPWR)
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return GDB_SIGNAL_PWR;
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#endif
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#if defined (SIGWINCH)
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if (hostsig == SIGWINCH)
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return GDB_SIGNAL_WINCH;
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#endif
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#if defined (SIGURG)
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if (hostsig == SIGURG)
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return GDB_SIGNAL_URG;
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#endif
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#if defined (SIGIO)
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if (hostsig == SIGIO)
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return GDB_SIGNAL_IO;
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#endif
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#if defined (SIGPOLL)
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if (hostsig == SIGPOLL)
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return GDB_SIGNAL_POLL;
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#endif
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#if defined (SIGSTOP)
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if (hostsig == SIGSTOP)
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return GDB_SIGNAL_STOP;
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#endif
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#if defined (SIGTSTP)
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if (hostsig == SIGTSTP)
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return GDB_SIGNAL_TSTP;
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#endif
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#if defined (SIGCONT)
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if (hostsig == SIGCONT)
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return GDB_SIGNAL_CONT;
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#endif
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#if defined (SIGTTIN)
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if (hostsig == SIGTTIN)
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return GDB_SIGNAL_TTIN;
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#endif
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#if defined (SIGTTOU)
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if (hostsig == SIGTTOU)
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return GDB_SIGNAL_TTOU;
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#endif
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#if defined (SIGVTALRM)
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if (hostsig == SIGVTALRM)
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return GDB_SIGNAL_VTALRM;
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#endif
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#if defined (SIGPROF)
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if (hostsig == SIGPROF)
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return GDB_SIGNAL_PROF;
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#endif
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#if defined (SIGXCPU)
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if (hostsig == SIGXCPU)
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return GDB_SIGNAL_XCPU;
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#endif
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#if defined (SIGXFSZ)
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if (hostsig == SIGXFSZ)
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return GDB_SIGNAL_XFSZ;
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#endif
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#if defined (SIGWIND)
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if (hostsig == SIGWIND)
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return GDB_SIGNAL_WIND;
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#endif
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#if defined (SIGPHONE)
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if (hostsig == SIGPHONE)
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return GDB_SIGNAL_PHONE;
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#endif
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#if defined (SIGLOST)
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if (hostsig == SIGLOST)
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return GDB_SIGNAL_LOST;
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#endif
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#if defined (SIGWAITING)
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if (hostsig == SIGWAITING)
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return GDB_SIGNAL_WAITING;
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#endif
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#if defined (SIGCANCEL)
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if (hostsig == SIGCANCEL)
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return GDB_SIGNAL_CANCEL;
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#endif
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#if defined (SIGLWP)
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if (hostsig == SIGLWP)
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return GDB_SIGNAL_LWP;
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#endif
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#if defined (SIGDANGER)
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if (hostsig == SIGDANGER)
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return GDB_SIGNAL_DANGER;
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#endif
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#if defined (SIGGRANT)
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if (hostsig == SIGGRANT)
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return GDB_SIGNAL_GRANT;
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#endif
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#if defined (SIGRETRACT)
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if (hostsig == SIGRETRACT)
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return GDB_SIGNAL_RETRACT;
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#endif
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#if defined (SIGMSG)
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if (hostsig == SIGMSG)
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return GDB_SIGNAL_MSG;
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#endif
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#if defined (SIGSOUND)
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if (hostsig == SIGSOUND)
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return GDB_SIGNAL_SOUND;
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#endif
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#if defined (SIGSAK)
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if (hostsig == SIGSAK)
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return GDB_SIGNAL_SAK;
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#endif
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#if defined (SIGPRIO)
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if (hostsig == SIGPRIO)
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return GDB_SIGNAL_PRIO;
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#endif
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/* Mach exceptions. Assumes that the values for EXC_ are positive! */
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#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
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if (hostsig == _NSIG + EXC_BAD_ACCESS)
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return GDB_EXC_BAD_ACCESS;
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#endif
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#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
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if (hostsig == _NSIG + EXC_BAD_INSTRUCTION)
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return GDB_EXC_BAD_INSTRUCTION;
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#endif
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#if defined (EXC_ARITHMETIC) && defined (_NSIG)
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if (hostsig == _NSIG + EXC_ARITHMETIC)
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return GDB_EXC_ARITHMETIC;
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#endif
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#if defined (EXC_EMULATION) && defined (_NSIG)
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if (hostsig == _NSIG + EXC_EMULATION)
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return GDB_EXC_EMULATION;
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#endif
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#if defined (EXC_SOFTWARE) && defined (_NSIG)
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if (hostsig == _NSIG + EXC_SOFTWARE)
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return GDB_EXC_SOFTWARE;
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#endif
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#if defined (EXC_BREAKPOINT) && defined (_NSIG)
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if (hostsig == _NSIG + EXC_BREAKPOINT)
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return GDB_EXC_BREAKPOINT;
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#endif
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#if defined (SIGINFO)
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if (hostsig == SIGINFO)
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return GDB_SIGNAL_INFO;
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#endif
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#if defined (SIGLIBRT)
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if (hostsig == SIGLIBRT)
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return GDB_SIGNAL_LIBRT;
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#endif
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#if defined (REALTIME_LO)
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if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
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{
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/* This block of GDB_SIGNAL_REALTIME value is in order. */
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if (33 <= hostsig && hostsig <= 63)
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return (enum gdb_signal)
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(hostsig - 33 + (int) GDB_SIGNAL_REALTIME_33);
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else if (hostsig == 32)
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return GDB_SIGNAL_REALTIME_32;
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else if (64 <= hostsig && hostsig <= 127)
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return (enum gdb_signal)
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(hostsig - 64 + (int) GDB_SIGNAL_REALTIME_64);
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else
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error (_("GDB bug: target.c (gdb_signal_from_host): "
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"unrecognized real-time signal"));
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}
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#endif
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return GDB_SIGNAL_UNKNOWN;
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}
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/* Convert a OURSIG (an enum gdb_signal) to the form used by the
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target operating system (refered to as the ``host'') or zero if the
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equivalent host signal is not available. Set/clear OURSIG_OK
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accordingly. */
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static int
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do_gdb_signal_to_host (enum gdb_signal oursig,
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int *oursig_ok)
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{
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int retsig;
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/* Silence the 'not used' warning, for targets that
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do not support signals. */
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(void) retsig;
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/* Signals are ordered ANSI-standard signals first, other signals
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second, with signals in each block ordered by their numerical
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values on a typical POSIX platform. */
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*oursig_ok = 1;
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switch (oursig)
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{
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case GDB_SIGNAL_0:
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return 0;
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/* SIGINT, SIGILL, SIGABRT, SIGFPE, SIGSEGV and SIGTERM
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are ANSI-standard signals and are always available. */
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case GDB_SIGNAL_INT:
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return SIGINT;
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case GDB_SIGNAL_ILL:
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return SIGILL;
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case GDB_SIGNAL_ABRT:
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return SIGABRT;
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case GDB_SIGNAL_FPE:
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return SIGFPE;
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case GDB_SIGNAL_SEGV:
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return SIGSEGV;
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case GDB_SIGNAL_TERM:
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return SIGTERM;
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/* All other signals need preprocessor conditionals. */
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#if defined (SIGHUP)
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case GDB_SIGNAL_HUP:
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return SIGHUP;
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#endif
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#if defined (SIGQUIT)
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case GDB_SIGNAL_QUIT:
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return SIGQUIT;
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#endif
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#if defined (SIGTRAP)
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case GDB_SIGNAL_TRAP:
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return SIGTRAP;
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#endif
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#if defined (SIGEMT)
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case GDB_SIGNAL_EMT:
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return SIGEMT;
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#endif
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#if defined (SIGKILL)
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case GDB_SIGNAL_KILL:
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return SIGKILL;
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#endif
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#if defined (SIGBUS)
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case GDB_SIGNAL_BUS:
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return SIGBUS;
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#endif
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#if defined (SIGSYS)
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case GDB_SIGNAL_SYS:
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return SIGSYS;
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#endif
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#if defined (SIGPIPE)
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case GDB_SIGNAL_PIPE:
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return SIGPIPE;
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#endif
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#if defined (SIGALRM)
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case GDB_SIGNAL_ALRM:
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return SIGALRM;
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#endif
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#if defined (SIGUSR1)
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case GDB_SIGNAL_USR1:
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return SIGUSR1;
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#endif
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#if defined (SIGUSR2)
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case GDB_SIGNAL_USR2:
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return SIGUSR2;
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#endif
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#if defined (SIGCHLD) || defined (SIGCLD)
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case GDB_SIGNAL_CHLD:
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#if defined (SIGCHLD)
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return SIGCHLD;
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#else
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return SIGCLD;
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#endif
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#endif /* SIGCLD or SIGCHLD */
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#if defined (SIGPWR)
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case GDB_SIGNAL_PWR:
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return SIGPWR;
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#endif
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#if defined (SIGWINCH)
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case GDB_SIGNAL_WINCH:
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return SIGWINCH;
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#endif
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#if defined (SIGURG)
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case GDB_SIGNAL_URG:
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return SIGURG;
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#endif
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#if defined (SIGIO)
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case GDB_SIGNAL_IO:
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return SIGIO;
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#endif
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#if defined (SIGPOLL)
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case GDB_SIGNAL_POLL:
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return SIGPOLL;
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#endif
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#if defined (SIGSTOP)
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case GDB_SIGNAL_STOP:
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return SIGSTOP;
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#endif
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#if defined (SIGTSTP)
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case GDB_SIGNAL_TSTP:
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return SIGTSTP;
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#endif
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#if defined (SIGCONT)
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case GDB_SIGNAL_CONT:
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return SIGCONT;
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#endif
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#if defined (SIGTTIN)
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case GDB_SIGNAL_TTIN:
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return SIGTTIN;
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#endif
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#if defined (SIGTTOU)
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case GDB_SIGNAL_TTOU:
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return SIGTTOU;
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#endif
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#if defined (SIGVTALRM)
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case GDB_SIGNAL_VTALRM:
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return SIGVTALRM;
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#endif
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#if defined (SIGPROF)
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case GDB_SIGNAL_PROF:
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return SIGPROF;
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#endif
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#if defined (SIGXCPU)
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case GDB_SIGNAL_XCPU:
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return SIGXCPU;
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#endif
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#if defined (SIGXFSZ)
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case GDB_SIGNAL_XFSZ:
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return SIGXFSZ;
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#endif
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#if defined (SIGWIND)
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case GDB_SIGNAL_WIND:
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return SIGWIND;
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#endif
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#if defined (SIGPHONE)
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case GDB_SIGNAL_PHONE:
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return SIGPHONE;
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#endif
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#if defined (SIGLOST)
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case GDB_SIGNAL_LOST:
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return SIGLOST;
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#endif
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#if defined (SIGWAITING)
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case GDB_SIGNAL_WAITING:
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return SIGWAITING;
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#endif
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#if defined (SIGCANCEL)
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case GDB_SIGNAL_CANCEL:
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return SIGCANCEL;
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#endif
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#if defined (SIGLWP)
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case GDB_SIGNAL_LWP:
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return SIGLWP;
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#endif
|
||
#if defined (SIGDANGER)
|
||
case GDB_SIGNAL_DANGER:
|
||
return SIGDANGER;
|
||
#endif
|
||
#if defined (SIGGRANT)
|
||
case GDB_SIGNAL_GRANT:
|
||
return SIGGRANT;
|
||
#endif
|
||
#if defined (SIGRETRACT)
|
||
case GDB_SIGNAL_RETRACT:
|
||
return SIGRETRACT;
|
||
#endif
|
||
#if defined (SIGMSG)
|
||
case GDB_SIGNAL_MSG:
|
||
return SIGMSG;
|
||
#endif
|
||
#if defined (SIGSOUND)
|
||
case GDB_SIGNAL_SOUND:
|
||
return SIGSOUND;
|
||
#endif
|
||
#if defined (SIGSAK)
|
||
case GDB_SIGNAL_SAK:
|
||
return SIGSAK;
|
||
#endif
|
||
#if defined (SIGPRIO)
|
||
case GDB_SIGNAL_PRIO:
|
||
return SIGPRIO;
|
||
#endif
|
||
|
||
/* Mach exceptions. Assumes that the values for EXC_ are positive! */
|
||
#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
|
||
case GDB_EXC_BAD_ACCESS:
|
||
return _NSIG + EXC_BAD_ACCESS;
|
||
#endif
|
||
#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
|
||
case GDB_EXC_BAD_INSTRUCTION:
|
||
return _NSIG + EXC_BAD_INSTRUCTION;
|
||
#endif
|
||
#if defined (EXC_ARITHMETIC) && defined (_NSIG)
|
||
case GDB_EXC_ARITHMETIC:
|
||
return _NSIG + EXC_ARITHMETIC;
|
||
#endif
|
||
#if defined (EXC_EMULATION) && defined (_NSIG)
|
||
case GDB_EXC_EMULATION:
|
||
return _NSIG + EXC_EMULATION;
|
||
#endif
|
||
#if defined (EXC_SOFTWARE) && defined (_NSIG)
|
||
case GDB_EXC_SOFTWARE:
|
||
return _NSIG + EXC_SOFTWARE;
|
||
#endif
|
||
#if defined (EXC_BREAKPOINT) && defined (_NSIG)
|
||
case GDB_EXC_BREAKPOINT:
|
||
return _NSIG + EXC_BREAKPOINT;
|
||
#endif
|
||
|
||
#if defined (SIGINFO)
|
||
case GDB_SIGNAL_INFO:
|
||
return SIGINFO;
|
||
#endif
|
||
#if defined (SIGLIBRT)
|
||
case GDB_SIGNAL_LIBRT:
|
||
return SIGLIBRT;
|
||
#endif
|
||
|
||
default:
|
||
#if defined (REALTIME_LO)
|
||
retsig = 0;
|
||
|
||
if (oursig >= GDB_SIGNAL_REALTIME_33
|
||
&& oursig <= GDB_SIGNAL_REALTIME_63)
|
||
{
|
||
/* This block of signals is continuous, and
|
||
GDB_SIGNAL_REALTIME_33 is 33 by definition. */
|
||
retsig = (int) oursig - (int) GDB_SIGNAL_REALTIME_33 + 33;
|
||
}
|
||
else if (oursig == GDB_SIGNAL_REALTIME_32)
|
||
{
|
||
/* GDB_SIGNAL_REALTIME_32 isn't contiguous with
|
||
GDB_SIGNAL_REALTIME_33. It is 32 by definition. */
|
||
retsig = 32;
|
||
}
|
||
else if (oursig >= GDB_SIGNAL_REALTIME_64
|
||
&& oursig <= GDB_SIGNAL_REALTIME_127)
|
||
{
|
||
/* This block of signals is continuous, and
|
||
GDB_SIGNAL_REALTIME_64 is 64 by definition. */
|
||
retsig = (int) oursig - (int) GDB_SIGNAL_REALTIME_64 + 64;
|
||
}
|
||
|
||
if (retsig >= REALTIME_LO && retsig < REALTIME_HI)
|
||
return retsig;
|
||
#endif
|
||
|
||
*oursig_ok = 0;
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
int
|
||
gdb_signal_to_host_p (enum gdb_signal oursig)
|
||
{
|
||
int oursig_ok;
|
||
do_gdb_signal_to_host (oursig, &oursig_ok);
|
||
return oursig_ok;
|
||
}
|
||
|
||
int
|
||
gdb_signal_to_host (enum gdb_signal oursig)
|
||
{
|
||
int oursig_ok;
|
||
int targ_signo = do_gdb_signal_to_host (oursig, &oursig_ok);
|
||
if (!oursig_ok)
|
||
{
|
||
/* The user might be trying to do "signal SIGSAK" where this system
|
||
doesn't have SIGSAK. */
|
||
warning (_("Signal %s does not exist on this system."),
|
||
gdb_signal_to_name (oursig));
|
||
return 0;
|
||
}
|
||
else
|
||
return targ_signo;
|
||
}
|