[rfa] gdbserver signal handling

Daniel Jacobowitz
2002-02-28T04:12:22Z

And here's the other patch I've been meaning to finish. With this,
signals.exp now passes on a remote GDBserver, and we get the signal numbers
translated correctly.

OK?

--
Daniel Jacobowitz Carnegie Mellon University
MontaVista Software Debian GNU/Linux Developer

2002-02-27 Daniel Jacobowitz <drow@mvista.com>

* gdbserver/server.c (main): Call target_signal_to_host_p
and target_signal_to_host on signals received from the remote.
* gdbserver/remote-utils.c (prepare_resume_reply): Call
target_signal_from_host on signals sent to the remote.
* gdbserver/signals.c: New file.
* gdbserver/server.h: Add prototypes.
* gdbserver/Makefile.in: Add signals.o.

diff -uNr gdbserver.1/Makefile.in gdbserver/Makefile.in
--- gdbserver.1/Makefile.in Wed Feb 27 21:47:26 2002
+++ gdbserver/Makefile.in Wed Feb 27 22:05:05 2002
@@ -120,7 +120,7 @@
SOURCES = $(SFILES)
TAGFILES = $(SOURCES) ${HFILES} ${ALLPARAM} ${POSSLIBS}

-OBS = utils.o $(DEPFILES) server.o remote-utils.o regcache.o
+OBS = utils.o $(DEPFILES) server.o remote-utils.o signals.o regcache.o

# Prevent Sun make from putting in the machine type. Setting
# TARGET_ARCH to nothing works for SunOS 3, 4.0, but not for 4.1.
diff -uNr gdbserver.1/remote-utils.c gdbserver/remote-utils.c
--- gdbserver.1/remote-utils.c Sun Feb 24 18:33:52 2002
+++ gdbserver/remote-utils.c Wed Feb 27 22:04:39 2002
@@ -465,17 +465,15 @@
void
prepare_resume_reply (char *buf, char status, unsigned char signo)
{
- int nib;
+ int nib, sig;

*buf++ = status;

- /* FIXME! Should be converting this signal number (numbered
- according to the signal numbering of the system we are running on)
- to the signal numbers used by the gdb protocol (see enum target_signal
- in gdb/target.h). */
- nib = ((signo & 0xf0) >> 4);
+ sig = (int)target_signal_from_host (signo);
+
+ nib = ((sig & 0xf0) >> 4);
*buf++ = tohex (nib);
- nib = signo & 0x0f;
+ nib = sig & 0x0f;
*buf++ = tohex (nib);

if (status == 'T')
diff -uNr gdbserver.1/server.c gdbserver/server.c
--- gdbserver.1/server.c Thu Feb 14 01:08:30 2002
+++ gdbserver/server.c Wed Feb 27 22:04:39 2002
@@ -190,13 +190,21 @@
break;
case 'C':
convert_ascii_to_int (own_buf + 1, &sig, 1);
- myresume (0, sig);
+ if (target_signal_to_host_p (sig))
+ signal = target_signal_to_host (sig);
+ else
+ signal = 0;
+ myresume (0, signal);
signal = mywait (&status);
prepare_resume_reply (own_buf, status, signal);
break;
case 'S':
convert_ascii_to_int (own_buf + 1, &sig, 1);
- myresume (1, sig);
+ if (target_signal_to_host_p (sig))
+ signal = target_signal_to_host (sig);
+ else
+ signal = 0;
+ myresume (1, signal);
signal = mywait (&status);
prepare_resume_reply (own_buf, status, signal);
break;
diff -uNr gdbserver.1/server.h gdbserver/server.h
--- gdbserver.1/server.h Thu Feb 14 01:05:36 2002
+++ gdbserver/server.h Wed Feb 27 22:18:52 2002
@@ -84,6 +84,10 @@
void decode_M_packet (char *from, CORE_ADDR * mem_addr_ptr,
unsigned int *len_ptr, char *to);

+/* Functions from ``signals.c''. */
+int target_signal_from_host (int hostsig);
+int target_signal_to_host_p (int oursig);
+int target_signal_to_host (int oursig);

/* Functions from utils.c */

diff -uNr gdbserver.1/signals.c gdbserver/signals.c
--- gdbserver.1/signals.c Wed Dec 31 19:00:00 1969
+++ gdbserver/signals.c Wed Feb 27 22:17:59 2002
@@ -0,0 +1,770 @@
+/* Functions to convert to and from the target signal protocol.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002 Free Software Foundation, Inc.
+ Contributed by Cygnus Support.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "server.h"
+
+#include <signal.h>
+
+/* This enum defines a part of the GDB remote protocol. It should be kept
+ in sync with the copy in "defs.h". */
+
+enum target_signal
+ {
+ /* Used some places to record the concept that there is no signal. */
+ TARGET_SIGNAL_0 = 0,
+ TARGET_SIGNAL_FIRST = 0,
+ TARGET_SIGNAL_HUP = 1,
+ TARGET_SIGNAL_INT = 2,
+ TARGET_SIGNAL_QUIT = 3,
+ TARGET_SIGNAL_ILL = 4,
+ TARGET_SIGNAL_TRAP = 5,
+ TARGET_SIGNAL_ABRT = 6,
+ TARGET_SIGNAL_EMT = 7,
+ TARGET_SIGNAL_FPE = 8,
+ TARGET_SIGNAL_KILL = 9,
+ TARGET_SIGNAL_BUS = 10,
+ TARGET_SIGNAL_SEGV = 11,
+ TARGET_SIGNAL_SYS = 12,
+ TARGET_SIGNAL_PIPE = 13,
+ TARGET_SIGNAL_ALRM = 14,
+ TARGET_SIGNAL_TERM = 15,
+ TARGET_SIGNAL_URG = 16,
+ TARGET_SIGNAL_STOP = 17,
+ TARGET_SIGNAL_TSTP = 18,
+ TARGET_SIGNAL_CONT = 19,
+ TARGET_SIGNAL_CHLD = 20,
+ TARGET_SIGNAL_TTIN = 21,
+ TARGET_SIGNAL_TTOU = 22,
+ TARGET_SIGNAL_IO = 23,
+ TARGET_SIGNAL_XCPU = 24,
+ TARGET_SIGNAL_XFSZ = 25,
+ TARGET_SIGNAL_VTALRM = 26,
+ TARGET_SIGNAL_PROF = 27,
+ TARGET_SIGNAL_WINCH = 28,
+ TARGET_SIGNAL_LOST = 29,
+ TARGET_SIGNAL_USR1 = 30,
+ TARGET_SIGNAL_USR2 = 31,
+ TARGET_SIGNAL_PWR = 32,
+ /* Similar to SIGIO. Perhaps they should have the same number. */
+ TARGET_SIGNAL_POLL = 33,
+ TARGET_SIGNAL_WIND = 34,
+ TARGET_SIGNAL_PHONE = 35,
+ TARGET_SIGNAL_WAITING = 36,
+ TARGET_SIGNAL_LWP = 37,
+ TARGET_SIGNAL_DANGER = 38,
+ TARGET_SIGNAL_GRANT = 39,
+ TARGET_SIGNAL_RETRACT = 40,
+ TARGET_SIGNAL_MSG = 41,
+ TARGET_SIGNAL_SOUND = 42,
+ TARGET_SIGNAL_SAK = 43,
+ TARGET_SIGNAL_PRIO = 44,
+ TARGET_SIGNAL_REALTIME_33 = 45,
+ TARGET_SIGNAL_REALTIME_34 = 46,
+ TARGET_SIGNAL_REALTIME_35 = 47,
+ TARGET_SIGNAL_REALTIME_36 = 48,
+ TARGET_SIGNAL_REALTIME_37 = 49,
+ TARGET_SIGNAL_REALTIME_38 = 50,
+ TARGET_SIGNAL_REALTIME_39 = 51,
+ TARGET_SIGNAL_REALTIME_40 = 52,
+ TARGET_SIGNAL_REALTIME_41 = 53,
+ TARGET_SIGNAL_REALTIME_42 = 54,
+ TARGET_SIGNAL_REALTIME_43 = 55,
+ TARGET_SIGNAL_REALTIME_44 = 56,
+ TARGET_SIGNAL_REALTIME_45 = 57,
+ TARGET_SIGNAL_REALTIME_46 = 58,
+ TARGET_SIGNAL_REALTIME_47 = 59,
+ TARGET_SIGNAL_REALTIME_48 = 60,
+ TARGET_SIGNAL_REALTIME_49 = 61,
+ TARGET_SIGNAL_REALTIME_50 = 62,
+ TARGET_SIGNAL_REALTIME_51 = 63,
+ TARGET_SIGNAL_REALTIME_52 = 64,
+ TARGET_SIGNAL_REALTIME_53 = 65,
+ TARGET_SIGNAL_REALTIME_54 = 66,
+ TARGET_SIGNAL_REALTIME_55 = 67,
+ TARGET_SIGNAL_REALTIME_56 = 68,
+ TARGET_SIGNAL_REALTIME_57 = 69,
+ TARGET_SIGNAL_REALTIME_58 = 70,
+ TARGET_SIGNAL_REALTIME_59 = 71,
+ TARGET_SIGNAL_REALTIME_60 = 72,
+ TARGET_SIGNAL_REALTIME_61 = 73,
+ TARGET_SIGNAL_REALTIME_62 = 74,
+ TARGET_SIGNAL_REALTIME_63 = 75,
+
+ /* Used internally by Solaris threads. See signal(5) on Solaris. */
+ TARGET_SIGNAL_CANCEL = 76,
+
+ /* Yes, this pains me, too. But LynxOS didn't have SIG32, and now
+ GNU/Linux does, and we can't disturb the numbering, since it's
+ part of the remote protocol. Note that in some GDB's
+ TARGET_SIGNAL_REALTIME_32 is number 76. */
+ TARGET_SIGNAL_REALTIME_32,
+ /* Yet another pain, IRIX 6 has SIG64. */
+ TARGET_SIGNAL_REALTIME_64,
+ /* Yet another pain, GNU/Linux MIPS might go up to 128. */
+ TARGET_SIGNAL_REALTIME_65,
+ TARGET_SIGNAL_REALTIME_66,
+ TARGET_SIGNAL_REALTIME_67,
+ TARGET_SIGNAL_REALTIME_68,
+ TARGET_SIGNAL_REALTIME_69,
+ TARGET_SIGNAL_REALTIME_70,
+ TARGET_SIGNAL_REALTIME_71,
+ TARGET_SIGNAL_REALTIME_72,
+ TARGET_SIGNAL_REALTIME_73,
+ TARGET_SIGNAL_REALTIME_74,
+ TARGET_SIGNAL_REALTIME_75,
+ TARGET_SIGNAL_REALTIME_76,
+ TARGET_SIGNAL_REALTIME_77,
+ TARGET_SIGNAL_REALTIME_78,
+ TARGET_SIGNAL_REALTIME_79,
+ TARGET_SIGNAL_REALTIME_80,
+ TARGET_SIGNAL_REALTIME_81,
+ TARGET_SIGNAL_REALTIME_82,
+ TARGET_SIGNAL_REALTIME_83,
+ TARGET_SIGNAL_REALTIME_84,
+ TARGET_SIGNAL_REALTIME_85,
+ TARGET_SIGNAL_REALTIME_86,
+ TARGET_SIGNAL_REALTIME_87,
+ TARGET_SIGNAL_REALTIME_88,
+ TARGET_SIGNAL_REALTIME_89,
+ TARGET_SIGNAL_REALTIME_90,
+ TARGET_SIGNAL_REALTIME_91,
+ TARGET_SIGNAL_REALTIME_92,
+ TARGET_SIGNAL_REALTIME_93,
+ TARGET_SIGNAL_REALTIME_94,
+ TARGET_SIGNAL_REALTIME_95,
+ TARGET_SIGNAL_REALTIME_96,
+ TARGET_SIGNAL_REALTIME_97,
+ TARGET_SIGNAL_REALTIME_98,
+ TARGET_SIGNAL_REALTIME_99,
+ TARGET_SIGNAL_REALTIME_100,
+ TARGET_SIGNAL_REALTIME_101,
+ TARGET_SIGNAL_REALTIME_102,
+ TARGET_SIGNAL_REALTIME_103,
+ TARGET_SIGNAL_REALTIME_104,
+ TARGET_SIGNAL_REALTIME_105,
+ TARGET_SIGNAL_REALTIME_106,
+ TARGET_SIGNAL_REALTIME_107,
+ TARGET_SIGNAL_REALTIME_108,
+ TARGET_SIGNAL_REALTIME_109,
+ TARGET_SIGNAL_REALTIME_110,
+ TARGET_SIGNAL_REALTIME_111,
+ TARGET_SIGNAL_REALTIME_112,
+ TARGET_SIGNAL_REALTIME_113,
+ TARGET_SIGNAL_REALTIME_114,
+ TARGET_SIGNAL_REALTIME_115,
+ TARGET_SIGNAL_REALTIME_116,
+ TARGET_SIGNAL_REALTIME_117,
+ TARGET_SIGNAL_REALTIME_118,
+ TARGET_SIGNAL_REALTIME_119,
+ TARGET_SIGNAL_REALTIME_120,
+ TARGET_SIGNAL_REALTIME_121,
+ TARGET_SIGNAL_REALTIME_122,
+ TARGET_SIGNAL_REALTIME_123,
+ TARGET_SIGNAL_REALTIME_124,
+ TARGET_SIGNAL_REALTIME_125,
+ TARGET_SIGNAL_REALTIME_126,
+ TARGET_SIGNAL_REALTIME_127,
+
+ /* Mach exceptions */
+ TARGET_EXC_BAD_ACCESS,
+ TARGET_EXC_BAD_INSTRUCTION,
+ TARGET_EXC_ARITHMETIC,
+ TARGET_EXC_EMULATION,
+ TARGET_EXC_SOFTWARE,
+ TARGET_EXC_BREAKPOINT,
+
+ TARGET_SIGNAL_INFO,
+
+ /* Some signal we don't know about. */
+ TARGET_SIGNAL_UNKNOWN,
+
+ /* Use whatever signal we use when one is not specifically specified
+ (for passing to proceed and so on). */
+ TARGET_SIGNAL_DEFAULT,
+
+ /* Last and unused enum value, for sizing arrays, etc. */
+ TARGET_SIGNAL_LAST
+ };
+
+/* Convert host signal to our signals. */
+int
+target_signal_from_host (int hostsig)
+{
+ /* A switch statement would make sense but would require special kludges
+ to deal with the cases where more than one signal has the same number. */
+
+ if (hostsig == 0)
+ return TARGET_SIGNAL_0;
+
+#if defined (SIGHUP)
+ if (hostsig == SIGHUP)
+ return TARGET_SIGNAL_HUP;
+#endif
+#if defined (SIGINT)
+ if (hostsig == SIGINT)
+ return TARGET_SIGNAL_INT;
+#endif
+#if defined (SIGQUIT)
+ if (hostsig == SIGQUIT)
+ return TARGET_SIGNAL_QUIT;
+#endif
+#if defined (SIGILL)
+ if (hostsig == SIGILL)
+ return TARGET_SIGNAL_ILL;
+#endif
+#if defined (SIGTRAP)
+ if (hostsig == SIGTRAP)
+ return TARGET_SIGNAL_TRAP;
+#endif
+#if defined (SIGABRT)
+ if (hostsig == SIGABRT)
+ return TARGET_SIGNAL_ABRT;
+#endif
+#if defined (SIGEMT)
+ if (hostsig == SIGEMT)
+ return TARGET_SIGNAL_EMT;
+#endif
+#if defined (SIGFPE)
+ if (hostsig == SIGFPE)
+ return TARGET_SIGNAL_FPE;
+#endif
+#if defined (SIGKILL)
+ if (hostsig == SIGKILL)
+ return TARGET_SIGNAL_KILL;
+#endif
+#if defined (SIGBUS)
+ if (hostsig == SIGBUS)
+ return TARGET_SIGNAL_BUS;
+#endif
+#if defined (SIGSEGV)
+ if (hostsig == SIGSEGV)
+ return TARGET_SIGNAL_SEGV;
+#endif
+#if defined (SIGSYS)
+ if (hostsig == SIGSYS)
+ return TARGET_SIGNAL_SYS;
+#endif
+#if defined (SIGPIPE)
+ if (hostsig == SIGPIPE)
+ return TARGET_SIGNAL_PIPE;
+#endif
+#if defined (SIGALRM)
+ if (hostsig == SIGALRM)
+ return TARGET_SIGNAL_ALRM;
+#endif
+#if defined (SIGTERM)
+ if (hostsig == SIGTERM)
+ return TARGET_SIGNAL_TERM;
+#endif
+#if defined (SIGUSR1)
+ if (hostsig == SIGUSR1)
+ return TARGET_SIGNAL_USR1;
+#endif
+#if defined (SIGUSR2)
+ if (hostsig == SIGUSR2)
+ return TARGET_SIGNAL_USR2;
+#endif
+#if defined (SIGCLD)
+ if (hostsig == SIGCLD)
+ return TARGET_SIGNAL_CHLD;
+#endif
+#if defined (SIGCHLD)
+ if (hostsig == SIGCHLD)
+ return TARGET_SIGNAL_CHLD;
+#endif
+#if defined (SIGPWR)
+ if (hostsig == SIGPWR)
+ return TARGET_SIGNAL_PWR;
+#endif
+#if defined (SIGWINCH)
+ if (hostsig == SIGWINCH)
+ return TARGET_SIGNAL_WINCH;
+#endif
+#if defined (SIGURG)
+ if (hostsig == SIGURG)
+ return TARGET_SIGNAL_URG;
+#endif
+#if defined (SIGIO)
+ if (hostsig == SIGIO)
+ return TARGET_SIGNAL_IO;
+#endif
+#if defined (SIGPOLL)
+ if (hostsig == SIGPOLL)
+ return TARGET_SIGNAL_POLL;
+#endif
+#if defined (SIGSTOP)
+ if (hostsig == SIGSTOP)
+ return TARGET_SIGNAL_STOP;
+#endif
+#if defined (SIGTSTP)
+ if (hostsig == SIGTSTP)
+ return TARGET_SIGNAL_TSTP;
+#endif
+#if defined (SIGCONT)
+ if (hostsig == SIGCONT)
+ return TARGET_SIGNAL_CONT;
+#endif
+#if defined (SIGTTIN)
+ if (hostsig == SIGTTIN)
+ return TARGET_SIGNAL_TTIN;
+#endif
+#if defined (SIGTTOU)
+ if (hostsig == SIGTTOU)
+ return TARGET_SIGNAL_TTOU;
+#endif
+#if defined (SIGVTALRM)
+ if (hostsig == SIGVTALRM)
+ return TARGET_SIGNAL_VTALRM;
+#endif
+#if defined (SIGPROF)
+ if (hostsig == SIGPROF)
+ return TARGET_SIGNAL_PROF;
+#endif
+#if defined (SIGXCPU)
+ if (hostsig == SIGXCPU)
+ return TARGET_SIGNAL_XCPU;
+#endif
+#if defined (SIGXFSZ)
+ if (hostsig == SIGXFSZ)
+ return TARGET_SIGNAL_XFSZ;
+#endif
+#if defined (SIGWIND)
+ if (hostsig == SIGWIND)
+ return TARGET_SIGNAL_WIND;
+#endif
+#if defined (SIGPHONE)
+ if (hostsig == SIGPHONE)
+ return TARGET_SIGNAL_PHONE;
+#endif
+#if defined (SIGLOST)
+ if (hostsig == SIGLOST)
+ return TARGET_SIGNAL_LOST;
+#endif
+#if defined (SIGWAITING)
+ if (hostsig == SIGWAITING)
+ return TARGET_SIGNAL_WAITING;
+#endif
+#if defined (SIGCANCEL)
+ if (hostsig == SIGCANCEL)
+ return TARGET_SIGNAL_CANCEL;
+#endif
+#if defined (SIGLWP)
+ if (hostsig == SIGLWP)
+ return TARGET_SIGNAL_LWP;
+#endif
+#if defined (SIGDANGER)
+ if (hostsig == SIGDANGER)
+ return TARGET_SIGNAL_DANGER;
+#endif
+#if defined (SIGGRANT)
+ if (hostsig == SIGGRANT)
+ return TARGET_SIGNAL_GRANT;
+#endif
+#if defined (SIGRETRACT)
+ if (hostsig == SIGRETRACT)
+ return TARGET_SIGNAL_RETRACT;
+#endif
+#if defined (SIGMSG)
+ if (hostsig == SIGMSG)
+ return TARGET_SIGNAL_MSG;
+#endif
+#if defined (SIGSOUND)
+ if (hostsig == SIGSOUND)
+ return TARGET_SIGNAL_SOUND;
+#endif
+#if defined (SIGSAK)
+ if (hostsig == SIGSAK)
+ return TARGET_SIGNAL_SAK;
+#endif
+#if defined (SIGPRIO)
+ if (hostsig == SIGPRIO)
+ return TARGET_SIGNAL_PRIO;
+#endif
+
+ /* Mach exceptions. Assumes that the values for EXC_ are positive! */
+#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_BAD_ACCESS)
+ return TARGET_EXC_BAD_ACCESS;
+#endif
+#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_BAD_INSTRUCTION)
+ return TARGET_EXC_BAD_INSTRUCTION;
+#endif
+#if defined (EXC_ARITHMETIC) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_ARITHMETIC)
+ return TARGET_EXC_ARITHMETIC;
+#endif
+#if defined (EXC_EMULATION) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_EMULATION)
+ return TARGET_EXC_EMULATION;
+#endif
+#if defined (EXC_SOFTWARE) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_SOFTWARE)
+ return TARGET_EXC_SOFTWARE;
+#endif
+#if defined (EXC_BREAKPOINT) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_BREAKPOINT)
+ return TARGET_EXC_BREAKPOINT;
+#endif
+
+#if defined (SIGINFO)
+ if (hostsig == SIGINFO)
+ return TARGET_SIGNAL_INFO;
+#endif
+
+#if defined (REALTIME_LO)
+ if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
+ {
+ /* This block of TARGET_SIGNAL_REALTIME value is in order. */
+ if (33 <= hostsig && hostsig <= 63)
+ return (enum target_signal)
+ (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
+ else if (hostsig == 32)
+ return TARGET_SIGNAL_REALTIME_32;
+ else if (64 <= hostsig && hostsig <= 127)
+ return (enum target_signal)
+ (hostsig - 64 + (int) TARGET_SIGNAL_REALTIME_64);
+ else
+ error ("GDB bug: target.c (target_signal_from_host): unrecognized real-time signal");
+ }
+#endif
+
+#if defined (SIGRTMIN)
+ if (hostsig >= SIGRTMIN && hostsig <= SIGRTMAX)
+ {
+ /* This block of TARGET_SIGNAL_REALTIME value is in order. */
+ if (33 <= hostsig && hostsig <= 63)
+ return (enum target_signal)
+ (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
+ else if (hostsig == 64)
+ return TARGET_SIGNAL_REALTIME_64;
+ else
+ error ("GDB bug: target.c (target_signal_from_host): unrecognized real-time signal");
+ }
+#endif
+ return TARGET_SIGNAL_UNKNOWN;
+}
+
+/* Convert a OURSIG (an enum target_signal) to the form used by the
+ target operating system (refered to as the ``host'') or zero if the
+ equivalent host signal is not available. Set/clear OURSIG_OK
+ accordingly. */
+
+static int
+do_target_signal_to_host (enum target_signal oursig,
+ int *oursig_ok)
+{
+ *oursig_ok = 1;
+ switch (oursig)
+ {
+ case TARGET_SIGNAL_0:
+ return 0;
+
+#if defined (SIGHUP)
+ case TARGET_SIGNAL_HUP:
+ return SIGHUP;
+#endif
+#if defined (SIGINT)
+ case TARGET_SIGNAL_INT:
+ return SIGINT;
+#endif
+#if defined (SIGQUIT)
+ case TARGET_SIGNAL_QUIT:
+ return SIGQUIT;
+#endif
+#if defined (SIGILL)
+ case TARGET_SIGNAL_ILL:
+ return SIGILL;
+#endif
+#if defined (SIGTRAP)
+ case TARGET_SIGNAL_TRAP:
+ return SIGTRAP;
+#endif
+#if defined (SIGABRT)
+ case TARGET_SIGNAL_ABRT:
+ return SIGABRT;
+#endif
+#if defined (SIGEMT)
+ case TARGET_SIGNAL_EMT:
+ return SIGEMT;
+#endif
+#if defined (SIGFPE)
+ case TARGET_SIGNAL_FPE:
+ return SIGFPE;
+#endif
+#if defined (SIGKILL)
+ case TARGET_SIGNAL_KILL:
+ return SIGKILL;
+#endif
+#if defined (SIGBUS)
+ case TARGET_SIGNAL_BUS:
+ return SIGBUS;
+#endif
+#if defined (SIGSEGV)
+ case TARGET_SIGNAL_SEGV:
+ return SIGSEGV;
+#endif
+#if defined (SIGSYS)
+ case TARGET_SIGNAL_SYS:
+ return SIGSYS;
+#endif
+#if defined (SIGPIPE)
+ case TARGET_SIGNAL_PIPE:
+ return SIGPIPE;
+#endif
+#if defined (SIGALRM)
+ case TARGET_SIGNAL_ALRM:
+ return SIGALRM;
+#endif
+#if defined (SIGTERM)
+ case TARGET_SIGNAL_TERM:
+ return SIGTERM;
+#endif
+#if defined (SIGUSR1)
+ case TARGET_SIGNAL_USR1:
+ return SIGUSR1;
+#endif
+#if defined (SIGUSR2)
+ case TARGET_SIGNAL_USR2:
+ return SIGUSR2;
+#endif
+#if defined (SIGCHLD) || defined (SIGCLD)
+ case TARGET_SIGNAL_CHLD:
+#if defined (SIGCHLD)
+ return SIGCHLD;
+#else
+ return SIGCLD;
+#endif
+#endif /* SIGCLD or SIGCHLD */
+#if defined (SIGPWR)
+ case TARGET_SIGNAL_PWR:
+ return SIGPWR;
+#endif
+#if defined (SIGWINCH)
+ case TARGET_SIGNAL_WINCH:
+ return SIGWINCH;
+#endif
+#if defined (SIGURG)
+ case TARGET_SIGNAL_URG:
+ return SIGURG;
+#endif
+#if defined (SIGIO)
+ case TARGET_SIGNAL_IO:
+ return SIGIO;
+#endif
+#if defined (SIGPOLL)
+ case TARGET_SIGNAL_POLL:
+ return SIGPOLL;
+#endif
+#if defined (SIGSTOP)
+ case TARGET_SIGNAL_STOP:
+ return SIGSTOP;
+#endif
+#if defined (SIGTSTP)
+ case TARGET_SIGNAL_TSTP:
+ return SIGTSTP;
+#endif
+#if defined (SIGCONT)
+ case TARGET_SIGNAL_CONT:
+ return SIGCONT;
+#endif
+#if defined (SIGTTIN)
+ case TARGET_SIGNAL_TTIN:
+ return SIGTTIN;
+#endif
+#if defined (SIGTTOU)
+ case TARGET_SIGNAL_TTOU:
+ return SIGTTOU;
+#endif
+#if defined (SIGVTALRM)
+ case TARGET_SIGNAL_VTALRM:
+ return SIGVTALRM;
+#endif
+#if defined (SIGPROF)
+ case TARGET_SIGNAL_PROF:
+ return SIGPROF;
+#endif
+#if defined (SIGXCPU)
+ case TARGET_SIGNAL_XCPU:
+ return SIGXCPU;
+#endif
+#if defined (SIGXFSZ)
+ case TARGET_SIGNAL_XFSZ:
+ return SIGXFSZ;
+#endif
+#if defined (SIGWIND)
+ case TARGET_SIGNAL_WIND:
+ return SIGWIND;
+#endif
+#if defined (SIGPHONE)
+ case TARGET_SIGNAL_PHONE:
+ return SIGPHONE;
+#endif
+#if defined (SIGLOST)
+ case TARGET_SIGNAL_LOST:
+ return SIGLOST;
+#endif
+#if defined (SIGWAITING)
+ case TARGET_SIGNAL_WAITING:
+ return SIGWAITING;
+#endif
+#if defined (SIGCANCEL)
+ case TARGET_SIGNAL_CANCEL:
+ return SIGCANCEL;
+#endif
+#if defined (SIGLWP)
+ case TARGET_SIGNAL_LWP:
+ return SIGLWP;
+#endif
+#if defined (SIGDANGER)
+ case TARGET_SIGNAL_DANGER:
+ return SIGDANGER;
+#endif
+#if defined (SIGGRANT)
+ case TARGET_SIGNAL_GRANT:
+ return SIGGRANT;
+#endif
+#if defined (SIGRETRACT)
+ case TARGET_SIGNAL_RETRACT:
+ return SIGRETRACT;
+#endif
+#if defined (SIGMSG)
+ case TARGET_SIGNAL_MSG:
+ return SIGMSG;
+#endif
+#if defined (SIGSOUND)
+ case TARGET_SIGNAL_SOUND:
+ return SIGSOUND;
+#endif
+#if defined (SIGSAK)
+ case TARGET_SIGNAL_SAK:
+ return SIGSAK;
+#endif
+#if defined (SIGPRIO)
+ case TARGET_SIGNAL_PRIO:
+ return SIGPRIO;
+#endif
+
+ /* Mach exceptions. Assumes that the values for EXC_ are positive! */
+#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
+ case TARGET_EXC_BAD_ACCESS:
+ return _NSIG + EXC_BAD_ACCESS;
+#endif
+#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
+ case TARGET_EXC_BAD_INSTRUCTION:
+ return _NSIG + EXC_BAD_INSTRUCTION;
+#endif
+#if defined (EXC_ARITHMETIC) && defined (_NSIG)
+ case TARGET_EXC_ARITHMETIC:
+ return _NSIG + EXC_ARITHMETIC;
+#endif
+#if defined (EXC_EMULATION) && defined (_NSIG)
+ case TARGET_EXC_EMULATION:
+ return _NSIG + EXC_EMULATION;
+#endif
+#if defined (EXC_SOFTWARE) && defined (_NSIG)
+ case TARGET_EXC_SOFTWARE:
+ return _NSIG + EXC_SOFTWARE;
+#endif
+#if defined (EXC_BREAKPOINT) && defined (_NSIG)
+ case TARGET_EXC_BREAKPOINT:
+ return _NSIG + EXC_BREAKPOINT;
+#endif
+
+#if defined (SIGINFO)
+ case TARGET_SIGNAL_INFO:
+ return SIGINFO;
+#endif
+
+ default:
+#if defined (REALTIME_LO)
+ if (oursig >= TARGET_SIGNAL_REALTIME_33
+ && oursig <= TARGET_SIGNAL_REALTIME_63)
+ {
+ /* This block of signals is continuous, and
+ TARGET_SIGNAL_REALTIME_33 is 33 by definition. */
+ int retsig =
+ (int) oursig - (int) TARGET_SIGNAL_REALTIME_33 + 33;
+ if (retsig >= REALTIME_LO && retsig < REALTIME_HI)
+ return retsig;
+ }
+#if (REALTIME_LO < 33)
+ else if (oursig == TARGET_SIGNAL_REALTIME_32)
+ {
+ /* TARGET_SIGNAL_REALTIME_32 isn't contiguous with
+ TARGET_SIGNAL_REALTIME_33. It is 32 by definition. */
+ return 32;
+ }
+#endif
+#if (REALTIME_HI > 64)
+ if (oursig >= TARGET_SIGNAL_REALTIME_64
+ && oursig <= TARGET_SIGNAL_REALTIME_127)
+ {
+ /* This block of signals is continuous, and
+ TARGET_SIGNAL_REALTIME_64 is 64 by definition. */
+ int retsig =
+ (int) oursig - (int) TARGET_SIGNAL_REALTIME_64 + 64;
+ if (retsig >= REALTIME_LO && retsig < REALTIME_HI)
+ return retsig;
+ }
+
+#endif
+#endif
+
+#if defined (SIGRTMIN)
+ if (oursig >= TARGET_SIGNAL_REALTIME_33
+ && oursig <= TARGET_SIGNAL_REALTIME_63)
+ {
+ /* This block of signals is continuous, and
+ TARGET_SIGNAL_REALTIME_33 is 33 by definition. */
+ int retsig =
+ (int) oursig - (int) TARGET_SIGNAL_REALTIME_33 + 33;
+ if (retsig >= SIGRTMIN && retsig <= SIGRTMAX)
+ return retsig;
+ }
+ else if (oursig == TARGET_SIGNAL_REALTIME_64)
+ return 64;
+#endif
+ *oursig_ok = 0;
+ return 0;
+ }
+}
+
+int
+target_signal_to_host_p (int oursig)
+{
+ int oursig_ok;
+ do_target_signal_to_host ((enum target_signal) oursig, &oursig_ok);
+ return oursig_ok;
+}
+
+int
+target_signal_to_host (int oursig)
+{
+ int oursig_ok;
+ int targ_signo = do_target_signal_to_host ((enum target_signal) oursig,
+ &oursig_ok);
+ if (!oursig_ok)
+ return 0;
+ else
+ return targ_signo;
+}