794 lines
28 KiB
C
794 lines
28 KiB
C
/* Interface between GDB and target environments, including files and processes
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Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by John Gilmore.
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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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#if !defined (TARGET_H)
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#define TARGET_H
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/* This include file defines the interface between the main part
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of the debugger, and the part which is target-specific, or
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specific to the communications interface between us and the
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target.
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A TARGET is an interface between the debugger and a particular
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kind of file or process. Targets can be STACKED in STRATA,
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so that more than one target can potentially respond to a request.
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In particular, memory accesses will walk down the stack of targets
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until they find a target that is interested in handling that particular
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address. STRATA are artificial boundaries on the stack, within
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which particular kinds of targets live. Strata exist so that
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people don't get confused by pushing e.g. a process target and then
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a file target, and wondering why they can't see the current values
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of variables any more (the file target is handling them and they
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never get to the process target). So when you push a file target,
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it goes into the file stratum, which is always below the process
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stratum. */
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#include "bfd.h"
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enum strata {
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dummy_stratum, /* The lowest of the low */
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file_stratum, /* Executable files, etc */
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core_stratum, /* Core dump files */
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download_stratum, /* Downloading of remote targets */
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process_stratum /* Executing processes */
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};
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/* Stuff for target_wait. */
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/* Generally, what has the program done? */
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enum target_waitkind {
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/* The program has exited. The exit status is in value.integer. */
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TARGET_WAITKIND_EXITED,
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/* The program has stopped with a signal. Which signal is in value.sig. */
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TARGET_WAITKIND_STOPPED,
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/* The program has terminated with a signal. Which signal is in
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value.sig. */
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TARGET_WAITKIND_SIGNALLED,
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/* The program is letting us know that it dynamically loaded something
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(e.g. it called load(2) on AIX). */
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TARGET_WAITKIND_LOADED,
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/* Nothing happened, but we stopped anyway. This perhaps should be handled
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within target_wait, but I'm not sure target_wait should be resuming the
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inferior. */
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TARGET_WAITKIND_SPURIOUS
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};
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/* The numbering of these signals is chosen to match traditional unix
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signals (insofar as various unices use the same numbers, anyway).
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It is also the numbering of the GDB remote protocol. Other remote
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protocols, if they use a different numbering, should make sure to
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translate appropriately. */
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/* This is based strongly on Unix/POSIX signals for several reasons:
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(1) This set of signals represents a widely-accepted attempt to
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represent events of this sort in a portable fashion, (2) we want a
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signal to make it from wait to child_wait to the user intact, (3) many
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remote protocols use a similar encoding. However, it is
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recognized that this set of signals has limitations (such as not
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distinguishing between various kinds of SIGSEGV, or not
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distinguishing hitting a breakpoint from finishing a single step).
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So in the future we may get around this either by adding additional
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signals for breakpoint, single-step, etc., or by adding signal
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codes; the latter seems more in the spirit of what BSD, System V,
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etc. are doing to address these issues. */
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/* For an explanation of what each signal means, see
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target_signal_to_string. */
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enum target_signal {
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/* Used some places (e.g. stop_signal) to record the concept that
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there is no signal. */
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TARGET_SIGNAL_0 = 0,
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TARGET_SIGNAL_FIRST = 0,
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TARGET_SIGNAL_HUP = 1,
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TARGET_SIGNAL_INT = 2,
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TARGET_SIGNAL_QUIT = 3,
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TARGET_SIGNAL_ILL = 4,
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TARGET_SIGNAL_TRAP = 5,
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TARGET_SIGNAL_ABRT = 6,
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TARGET_SIGNAL_EMT = 7,
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TARGET_SIGNAL_FPE = 8,
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TARGET_SIGNAL_KILL = 9,
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TARGET_SIGNAL_BUS = 10,
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TARGET_SIGNAL_SEGV = 11,
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TARGET_SIGNAL_SYS = 12,
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TARGET_SIGNAL_PIPE = 13,
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TARGET_SIGNAL_ALRM = 14,
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TARGET_SIGNAL_TERM = 15,
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TARGET_SIGNAL_URG = 16,
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TARGET_SIGNAL_STOP = 17,
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TARGET_SIGNAL_TSTP = 18,
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TARGET_SIGNAL_CONT = 19,
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TARGET_SIGNAL_CHLD = 20,
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TARGET_SIGNAL_TTIN = 21,
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TARGET_SIGNAL_TTOU = 22,
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TARGET_SIGNAL_IO = 23,
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TARGET_SIGNAL_XCPU = 24,
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TARGET_SIGNAL_XFSZ = 25,
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TARGET_SIGNAL_VTALRM = 26,
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TARGET_SIGNAL_PROF = 27,
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TARGET_SIGNAL_WINCH = 28,
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TARGET_SIGNAL_LOST = 29,
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TARGET_SIGNAL_USR1 = 30,
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TARGET_SIGNAL_USR2 = 31,
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TARGET_SIGNAL_PWR = 32,
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/* Similar to SIGIO. Perhaps they should have the same number. */
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TARGET_SIGNAL_POLL = 33,
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TARGET_SIGNAL_WIND = 34,
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TARGET_SIGNAL_PHONE = 35,
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TARGET_SIGNAL_WAITING = 36,
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TARGET_SIGNAL_LWP = 37,
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TARGET_SIGNAL_DANGER = 38,
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TARGET_SIGNAL_GRANT = 39,
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TARGET_SIGNAL_RETRACT = 40,
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TARGET_SIGNAL_MSG = 41,
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TARGET_SIGNAL_SOUND = 42,
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TARGET_SIGNAL_SAK = 43,
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TARGET_SIGNAL_PRIO = 44,
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TARGET_SIGNAL_REALTIME_33 = 45,
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TARGET_SIGNAL_REALTIME_34 = 46,
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TARGET_SIGNAL_REALTIME_35 = 47,
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TARGET_SIGNAL_REALTIME_36 = 48,
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TARGET_SIGNAL_REALTIME_37 = 49,
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TARGET_SIGNAL_REALTIME_38 = 50,
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TARGET_SIGNAL_REALTIME_39 = 51,
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TARGET_SIGNAL_REALTIME_40 = 52,
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TARGET_SIGNAL_REALTIME_41 = 53,
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TARGET_SIGNAL_REALTIME_42 = 54,
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TARGET_SIGNAL_REALTIME_43 = 55,
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TARGET_SIGNAL_REALTIME_44 = 56,
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TARGET_SIGNAL_REALTIME_45 = 57,
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TARGET_SIGNAL_REALTIME_46 = 58,
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TARGET_SIGNAL_REALTIME_47 = 59,
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TARGET_SIGNAL_REALTIME_48 = 60,
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TARGET_SIGNAL_REALTIME_49 = 61,
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TARGET_SIGNAL_REALTIME_50 = 62,
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TARGET_SIGNAL_REALTIME_51 = 63,
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TARGET_SIGNAL_REALTIME_52 = 64,
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TARGET_SIGNAL_REALTIME_53 = 65,
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TARGET_SIGNAL_REALTIME_54 = 66,
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TARGET_SIGNAL_REALTIME_55 = 67,
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TARGET_SIGNAL_REALTIME_56 = 68,
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TARGET_SIGNAL_REALTIME_57 = 69,
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TARGET_SIGNAL_REALTIME_58 = 70,
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TARGET_SIGNAL_REALTIME_59 = 71,
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TARGET_SIGNAL_REALTIME_60 = 72,
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TARGET_SIGNAL_REALTIME_61 = 73,
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TARGET_SIGNAL_REALTIME_62 = 74,
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TARGET_SIGNAL_REALTIME_63 = 75,
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#if defined(MACH) || defined(__MACH__)
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/* Mach exceptions */
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TARGET_EXC_BAD_ACCESS = 76,
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TARGET_EXC_BAD_INSTRUCTION = 77,
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TARGET_EXC_ARITHMETIC = 78,
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TARGET_EXC_EMULATION = 79,
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TARGET_EXC_SOFTWARE = 80,
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TARGET_EXC_BREAKPOINT = 81,
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#endif
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/* Some signal we don't know about. */
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TARGET_SIGNAL_UNKNOWN,
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/* Use whatever signal we use when one is not specifically specified
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(for passing to proceed and so on). */
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TARGET_SIGNAL_DEFAULT,
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/* Last and unused enum value, for sizing arrays, etc. */
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TARGET_SIGNAL_LAST
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};
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struct target_waitstatus {
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enum target_waitkind kind;
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/* Exit status or signal number. */
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union {
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int integer;
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enum target_signal sig;
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} value;
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};
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/* Return the string for a signal. */
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extern char *target_signal_to_string PARAMS ((enum target_signal));
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/* Return the name (SIGHUP, etc.) for a signal. */
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extern char *target_signal_to_name PARAMS ((enum target_signal));
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/* Given a name (SIGHUP, etc.), return its signal. */
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enum target_signal target_signal_from_name PARAMS ((char *));
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/* If certain kinds of activity happen, target_wait should perform
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callbacks. */
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/* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible
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on TARGET_ACTIVITY_FD. */
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extern int target_activity_fd;
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/* Returns zero to leave the inferior alone, one to interrupt it. */
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extern int (*target_activity_function) PARAMS ((void));
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struct target_ops
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{
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char *to_shortname; /* Name this target type */
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char *to_longname; /* Name for printing */
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char *to_doc; /* Documentation. Does not include trailing
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newline, and starts with a one-line descrip-
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tion (probably similar to to_longname). */
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void (*to_open) PARAMS ((char *, int));
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void (*to_close) PARAMS ((int));
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void (*to_attach) PARAMS ((char *, int));
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void (*to_detach) PARAMS ((char *, int));
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void (*to_resume) PARAMS ((int, int, enum target_signal));
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int (*to_wait) PARAMS ((int, struct target_waitstatus *));
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void (*to_fetch_registers) PARAMS ((int));
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void (*to_store_registers) PARAMS ((int));
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void (*to_prepare_to_store) PARAMS ((void));
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/* Transfer LEN bytes of memory between GDB address MYADDR and
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target address MEMADDR. If WRITE, transfer them to the target, else
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transfer them from the target. TARGET is the target from which we
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get this function.
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Return value, N, is one of the following:
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0 means that we can't handle this. If errno has been set, it is the
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error which prevented us from doing it (FIXME: What about bfd_error?).
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positive (call it N) means that we have transferred N bytes
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starting at MEMADDR. We might be able to handle more bytes
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beyond this length, but no promises.
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negative (call its absolute value N) means that we cannot
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transfer right at MEMADDR, but we could transfer at least
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something at MEMADDR + N. */
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int (*to_xfer_memory) PARAMS ((CORE_ADDR memaddr, char *myaddr,
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int len, int write,
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struct target_ops * target));
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#if 0
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/* Enable this after 4.12. */
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/* Search target memory. Start at STARTADDR and take LEN bytes of
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target memory, and them with MASK, and compare to DATA. If they
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match, set *ADDR_FOUND to the address we found it at, store the data
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we found at LEN bytes starting at DATA_FOUND, and return. If
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not, add INCREMENT to the search address and keep trying until
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the search address is outside of the range [LORANGE,HIRANGE).
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If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and return. */
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void (*to_search) PARAMS ((int len, char *data, char *mask,
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CORE_ADDR startaddr, int increment,
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CORE_ADDR lorange, CORE_ADDR hirange,
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CORE_ADDR *addr_found, char *data_found));
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#define target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found) \
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(*current_target.to_search) (len, data, mask, startaddr, increment, \
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lorange, hirange, addr_found, data_found)
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#endif /* 0 */
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void (*to_files_info) PARAMS ((struct target_ops *));
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int (*to_insert_breakpoint) PARAMS ((CORE_ADDR, char *));
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int (*to_remove_breakpoint) PARAMS ((CORE_ADDR, char *));
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void (*to_terminal_init) PARAMS ((void));
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void (*to_terminal_inferior) PARAMS ((void));
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void (*to_terminal_ours_for_output) PARAMS ((void));
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void (*to_terminal_ours) PARAMS ((void));
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void (*to_terminal_info) PARAMS ((char *, int));
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void (*to_kill) PARAMS ((void));
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void (*to_load) PARAMS ((char *, int));
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int (*to_lookup_symbol) PARAMS ((char *, CORE_ADDR *));
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void (*to_create_inferior) PARAMS ((char *, char *, char **));
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void (*to_mourn_inferior) PARAMS ((void));
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int (*to_can_run) PARAMS ((void));
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void (*to_notice_signals) PARAMS ((int pid));
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int (*to_thread_alive) PARAMS ((int pid));
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void (*to_stop) PARAMS ((void));
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enum strata to_stratum;
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struct target_ops
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*DONT_USE; /* formerly to_next */
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int to_has_all_memory;
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int to_has_memory;
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int to_has_stack;
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int to_has_registers;
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int to_has_execution;
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struct section_table
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*to_sections;
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struct section_table
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*to_sections_end;
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int to_magic;
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/* Need sub-structure for target machine related rather than comm related? */
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};
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/* Magic number for checking ops size. If a struct doesn't end with this
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number, somebody changed the declaration but didn't change all the
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places that initialize one. */
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#define OPS_MAGIC 3840
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/* The ops structure for our "current" target process. This should
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never be NULL. If there is no target, it points to the dummy_target. */
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extern struct target_ops current_target;
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/* An item on the target stack. */
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struct target_stack_item
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{
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struct target_stack_item *next;
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struct target_ops *target_ops;
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};
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/* The target stack. */
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extern struct target_stack_item *target_stack;
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/* Define easy words for doing these operations on our current target. */
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#define target_shortname (current_target.to_shortname)
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#define target_longname (current_target.to_longname)
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/* The open routine takes the rest of the parameters from the command,
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and (if successful) pushes a new target onto the stack.
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Targets should supply this routine, if only to provide an error message. */
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#define target_open(name, from_tty) \
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(*current_target.to_open) (name, from_tty)
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/* Does whatever cleanup is required for a target that we are no longer
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going to be calling. Argument says whether we are quitting gdb and
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should not get hung in case of errors, or whether we want a clean
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termination even if it takes a while. This routine is automatically
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always called just before a routine is popped off the target stack.
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Closing file descriptors and freeing memory are typical things it should
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do. */
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#define target_close(quitting) \
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(*current_target.to_close) (quitting)
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/* Attaches to a process on the target side. Arguments are as passed
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to the `attach' command by the user. This routine can be called
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when the target is not on the target-stack, if the target_can_run
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routine returns 1; in that case, it must push itself onto the stack.
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Upon exit, the target should be ready for normal operations, and
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should be ready to deliver the status of the process immediately
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(without waiting) to an upcoming target_wait call. */
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#define target_attach(args, from_tty) \
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(*current_target.to_attach) (args, from_tty)
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/* Takes a program previously attached to and detaches it.
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The program may resume execution (some targets do, some don't) and will
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no longer stop on signals, etc. We better not have left any breakpoints
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in the program or it'll die when it hits one. ARGS is arguments
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typed by the user (e.g. a signal to send the process). FROM_TTY
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says whether to be verbose or not. */
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extern void
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target_detach PARAMS ((char *, int));
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/* Resume execution of the target process PID. STEP says whether to
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single-step or to run free; SIGGNAL is the signal to be given to
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the target, or TARGET_SIGNAL_0 for no signal. The caller may not
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pass TARGET_SIGNAL_DEFAULT. */
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#define target_resume(pid, step, siggnal) \
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(*current_target.to_resume) (pid, step, siggnal)
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/* Wait for process pid to do something. Pid = -1 to wait for any pid
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to do something. Return pid of child, or -1 in case of error;
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store status through argument pointer STATUS. Note that it is
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*not* OK to return_to_top_level out of target_wait without popping
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the debugging target from the stack; GDB isn't prepared to get back
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to the prompt with a debugging target but without the frame cache,
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stop_pc, etc., set up. */
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#define target_wait(pid, status) \
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(*current_target.to_wait) (pid, status)
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/* Fetch register REGNO, or all regs if regno == -1. No result. */
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#define target_fetch_registers(regno) \
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(*current_target.to_fetch_registers) (regno)
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/* Store at least register REGNO, or all regs if REGNO == -1.
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It can store as many registers as it wants to, so target_prepare_to_store
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must have been previously called. Calls error() if there are problems. */
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#define target_store_registers(regs) \
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(*current_target.to_store_registers) (regs)
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/* Get ready to modify the registers array. On machines which store
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individual registers, this doesn't need to do anything. On machines
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which store all the registers in one fell swoop, this makes sure
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that REGISTERS contains all the registers from the program being
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debugged. */
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#define target_prepare_to_store() \
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(*current_target.to_prepare_to_store) ()
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extern int target_read_string PARAMS ((CORE_ADDR, char **, int, int *));
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extern int
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target_read_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
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extern int
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target_read_memory_section PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
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asection *bfd_section));
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extern int
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target_read_memory_partial PARAMS ((CORE_ADDR, char *, int, int *));
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extern int
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target_write_memory PARAMS ((CORE_ADDR, char *, int));
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extern int
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xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
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extern int
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child_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
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/* From exec.c */
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extern void
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print_section_info PARAMS ((struct target_ops *, bfd *));
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/* Print a line about the current target. */
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#define target_files_info() \
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(*current_target.to_files_info) (¤t_target)
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/* Insert a breakpoint at address ADDR in the target machine.
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SAVE is a pointer to memory allocated for saving the
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target contents. It is guaranteed by the caller to be long enough
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to save "sizeof BREAKPOINT" bytes. Result is 0 for success, or
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an errno value. */
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#define target_insert_breakpoint(addr, save) \
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(*current_target.to_insert_breakpoint) (addr, save)
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/* Remove a breakpoint at address ADDR in the target machine.
|
||
SAVE is a pointer to the same save area
|
||
that was previously passed to target_insert_breakpoint.
|
||
Result is 0 for success, or an errno value. */
|
||
|
||
#define target_remove_breakpoint(addr, save) \
|
||
(*current_target.to_remove_breakpoint) (addr, save)
|
||
|
||
/* Initialize the terminal settings we record for the inferior,
|
||
before we actually run the inferior. */
|
||
|
||
#define target_terminal_init() \
|
||
(*current_target.to_terminal_init) ()
|
||
|
||
/* Put the inferior's terminal settings into effect.
|
||
This is preparation for starting or resuming the inferior. */
|
||
|
||
#define target_terminal_inferior() \
|
||
(*current_target.to_terminal_inferior) ()
|
||
|
||
/* Put some of our terminal settings into effect,
|
||
enough to get proper results from our output,
|
||
but do not change into or out of RAW mode
|
||
so that no input is discarded.
|
||
|
||
After doing this, either terminal_ours or terminal_inferior
|
||
should be called to get back to a normal state of affairs. */
|
||
|
||
#define target_terminal_ours_for_output() \
|
||
(*current_target.to_terminal_ours_for_output) ()
|
||
|
||
/* Put our terminal settings into effect.
|
||
First record the inferior's terminal settings
|
||
so they can be restored properly later. */
|
||
|
||
#define target_terminal_ours() \
|
||
(*current_target.to_terminal_ours) ()
|
||
|
||
/* Print useful information about our terminal status, if such a thing
|
||
exists. */
|
||
|
||
#define target_terminal_info(arg, from_tty) \
|
||
(*current_target.to_terminal_info) (arg, from_tty)
|
||
|
||
/* Kill the inferior process. Make it go away. */
|
||
|
||
#define target_kill() \
|
||
(*current_target.to_kill) ()
|
||
|
||
/* Load an executable file into the target process. This is expected to
|
||
not only bring new code into the target process, but also to update
|
||
GDB's symbol tables to match. */
|
||
|
||
#define target_load(arg, from_tty) \
|
||
(*current_target.to_load) (arg, from_tty)
|
||
|
||
/* Look up a symbol in the target's symbol table. NAME is the symbol
|
||
name. ADDRP is a CORE_ADDR * pointing to where the value of the symbol
|
||
should be returned. The result is 0 if successful, nonzero if the
|
||
symbol does not exist in the target environment. This function should
|
||
not call error() if communication with the target is interrupted, since
|
||
it is called from symbol reading, but should return nonzero, possibly
|
||
doing a complain(). */
|
||
|
||
#define target_lookup_symbol(name, addrp) \
|
||
(*current_target.to_lookup_symbol) (name, addrp)
|
||
|
||
/* Start an inferior process and set inferior_pid to its pid.
|
||
EXEC_FILE is the file to run.
|
||
ALLARGS is a string containing the arguments to the program.
|
||
ENV is the environment vector to pass. Errors reported with error().
|
||
On VxWorks and various standalone systems, we ignore exec_file. */
|
||
|
||
#define target_create_inferior(exec_file, args, env) \
|
||
(*current_target.to_create_inferior) (exec_file, args, env)
|
||
|
||
/* The inferior process has died. Do what is right. */
|
||
|
||
#define target_mourn_inferior() \
|
||
(*current_target.to_mourn_inferior) ()
|
||
|
||
/* Does target have enough data to do a run or attach command? */
|
||
|
||
#define target_can_run(t) \
|
||
((t)->to_can_run) ()
|
||
|
||
/* post process changes to signal handling in the inferior. */
|
||
|
||
#define target_notice_signals(pid) \
|
||
(*current_target.to_notice_signals) (pid)
|
||
|
||
/* Check to see if a thread is still alive. */
|
||
|
||
#define target_thread_alive(pid) \
|
||
(*current_target.to_thread_alive) (pid)
|
||
|
||
/* Make target stop in a continuable fashion. (For instance, under Unix, this
|
||
should act like SIGSTOP). This function is normally used by GUIs to
|
||
implement a stop button. */
|
||
|
||
#define target_stop current_target.to_stop
|
||
|
||
/* Pointer to next target in the chain, e.g. a core file and an exec file. */
|
||
|
||
#define target_next \
|
||
(current_target.to_next)
|
||
|
||
/* Does the target include all of memory, or only part of it? This
|
||
determines whether we look up the target chain for other parts of
|
||
memory if this target can't satisfy a request. */
|
||
|
||
#define target_has_all_memory \
|
||
(current_target.to_has_all_memory)
|
||
|
||
/* Does the target include memory? (Dummy targets don't.) */
|
||
|
||
#define target_has_memory \
|
||
(current_target.to_has_memory)
|
||
|
||
/* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
|
||
we start a process.) */
|
||
|
||
#define target_has_stack \
|
||
(current_target.to_has_stack)
|
||
|
||
/* Does the target have registers? (Exec files don't.) */
|
||
|
||
#define target_has_registers \
|
||
(current_target.to_has_registers)
|
||
|
||
/* Does the target have execution? Can we make it jump (through
|
||
hoops), or pop its stack a few times? FIXME: If this is to work that
|
||
way, it needs to check whether an inferior actually exists.
|
||
remote-udi.c and probably other targets can be the current target
|
||
when the inferior doesn't actually exist at the moment. Right now
|
||
this just tells us whether this target is *capable* of execution. */
|
||
|
||
#define target_has_execution \
|
||
(current_target.to_has_execution)
|
||
|
||
extern void target_link PARAMS ((char *, CORE_ADDR *));
|
||
|
||
/* Converts a process id to a string. Usually, the string just contains
|
||
`process xyz', but on some systems it may contain
|
||
`process xyz thread abc'. */
|
||
|
||
#ifndef target_pid_to_str
|
||
#define target_pid_to_str(PID) \
|
||
normal_pid_to_str (PID)
|
||
extern char *normal_pid_to_str PARAMS ((int pid));
|
||
#endif
|
||
|
||
#ifndef target_new_objfile
|
||
#define target_new_objfile(OBJFILE)
|
||
#endif
|
||
|
||
/* Hook to call target-dependant code after reading in a new symbol table. */
|
||
|
||
#ifndef TARGET_SYMFILE_POSTREAD
|
||
#define TARGET_SYMFILE_POSTREAD(OBJFILE)
|
||
#endif
|
||
|
||
/* Hook to call target dependant code just after inferior target process has
|
||
started. */
|
||
|
||
#ifndef TARGET_CREATE_INFERIOR_HOOK
|
||
#define TARGET_CREATE_INFERIOR_HOOK(PID)
|
||
#endif
|
||
|
||
/* Hardware watchpoint interfaces. */
|
||
|
||
/* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
|
||
write). */
|
||
|
||
#ifndef STOPPED_BY_WATCHPOINT
|
||
#define STOPPED_BY_WATCHPOINT(w) 0
|
||
#endif
|
||
|
||
/* Provide defaults for systems that don't support hardware watchpoints. */
|
||
|
||
#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS
|
||
|
||
/* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
|
||
one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
|
||
bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
|
||
(including this one?). OTHERTYPE is who knows what... */
|
||
|
||
#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0
|
||
|
||
/* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0
|
||
for write, 1 for read, and 2 for read/write accesses. Returns 0 for
|
||
success, non-zero for failure. */
|
||
|
||
#define target_remove_watchpoint(ADDR,LEN,TYPE) -1
|
||
#define target_insert_watchpoint(ADDR,LEN,TYPE) -1
|
||
|
||
#endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */
|
||
|
||
#ifndef target_insert_hw_breakpoint
|
||
#define target_remove_hw_breakpoint(ADDR,SHADOW) -1
|
||
#define target_insert_hw_breakpoint(ADDR,SHADOW) -1
|
||
#endif
|
||
|
||
#ifndef target_stopped_data_address
|
||
#define target_stopped_data_address() 0
|
||
#endif
|
||
|
||
/* If defined, then we need to decr pc by this much after a hardware break-
|
||
point. Presumably this overrides DECR_PC_AFTER_BREAK... */
|
||
|
||
#ifndef DECR_PC_AFTER_HW_BREAK
|
||
#define DECR_PC_AFTER_HW_BREAK 0
|
||
#endif
|
||
|
||
/* Routines for maintenance of the target structures...
|
||
|
||
add_target: Add a target to the list of all possible targets.
|
||
|
||
push_target: Make this target the top of the stack of currently used
|
||
targets, within its particular stratum of the stack. Result
|
||
is 0 if now atop the stack, nonzero if not on top (maybe
|
||
should warn user).
|
||
|
||
unpush_target: Remove this from the stack of currently used targets,
|
||
no matter where it is on the list. Returns 0 if no
|
||
change, 1 if removed from stack.
|
||
|
||
pop_target: Remove the top thing on the stack of current targets. */
|
||
|
||
extern void
|
||
add_target PARAMS ((struct target_ops *));
|
||
|
||
extern int
|
||
push_target PARAMS ((struct target_ops *));
|
||
|
||
extern int
|
||
unpush_target PARAMS ((struct target_ops *));
|
||
|
||
extern void
|
||
target_preopen PARAMS ((int));
|
||
|
||
extern void
|
||
pop_target PARAMS ((void));
|
||
|
||
/* Struct section_table maps address ranges to file sections. It is
|
||
mostly used with BFD files, but can be used without (e.g. for handling
|
||
raw disks, or files not in formats handled by BFD). */
|
||
|
||
struct section_table {
|
||
CORE_ADDR addr; /* Lowest address in section */
|
||
CORE_ADDR endaddr; /* 1+highest address in section */
|
||
|
||
sec_ptr the_bfd_section;
|
||
|
||
bfd *bfd; /* BFD file pointer */
|
||
};
|
||
|
||
/* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
|
||
Returns 0 if OK, 1 on error. */
|
||
|
||
extern int
|
||
build_section_table PARAMS ((bfd *, struct section_table **,
|
||
struct section_table **));
|
||
|
||
/* From mem-break.c */
|
||
|
||
extern int
|
||
memory_remove_breakpoint PARAMS ((CORE_ADDR, char *));
|
||
|
||
extern int
|
||
memory_insert_breakpoint PARAMS ((CORE_ADDR, char *));
|
||
|
||
unsigned char *
|
||
memory_breakpoint_from_pc PARAMS ((CORE_ADDR *pcptr, int *lenptr));
|
||
|
||
/* From target.c */
|
||
|
||
extern void
|
||
initialize_targets PARAMS ((void));
|
||
|
||
extern void
|
||
noprocess PARAMS ((void));
|
||
|
||
extern void
|
||
find_default_attach PARAMS ((char *, int));
|
||
|
||
extern void
|
||
find_default_create_inferior PARAMS ((char *, char *, char **));
|
||
|
||
extern struct target_ops *
|
||
find_core_target PARAMS ((void));
|
||
|
||
/* Stuff that should be shared among the various remote targets. */
|
||
|
||
/* Debugging level. 0 is off, and non-zero values mean to print some debug
|
||
information (higher values, more information). */
|
||
extern int remote_debug;
|
||
|
||
/* Speed in bits per second, or -1 which means don't mess with the speed. */
|
||
extern int baud_rate;
|
||
/* Timeout limit for response from target. */
|
||
extern int remote_timeout;
|
||
|
||
extern asection *target_memory_bfd_section;
|
||
|
||
/* Functions for helping to write a native target. */
|
||
|
||
/* This is for native targets which use a unix/POSIX-style waitstatus. */
|
||
extern void store_waitstatus PARAMS ((struct target_waitstatus *, int));
|
||
|
||
/* Convert between host signal numbers and enum target_signal's. */
|
||
extern enum target_signal target_signal_from_host PARAMS ((int));
|
||
extern int target_signal_to_host PARAMS ((enum target_signal));
|
||
|
||
/* Convert from a number used in a GDB command to an enum target_signal. */
|
||
extern enum target_signal target_signal_from_command PARAMS ((int));
|
||
|
||
/* Any target can call this to switch to remote protocol (in remote.c). */
|
||
extern void push_remote_target PARAMS ((char *name, int from_tty));
|
||
|
||
/* Imported from machine dependent code */
|
||
|
||
#ifdef NO_SINGLE_STEP
|
||
extern int one_stepped;
|
||
extern void single_step PARAMS ((enum target_signal));
|
||
#endif /* NO_SINGLE_STEP */
|
||
|
||
#endif /* !defined (TARGET_H) */
|