[binutils.git] / gdb / inferior.h

/* Variables that describe the inferior process running under GDB:
   Where it is, why it stopped, and how to step it.
   Copyright 1986, 1989, 1992, 1996, 1998 Free Software Foundation, Inc.

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.  */

#if !defined (INFERIOR_H)
#define INFERIOR_H 1

/* For bpstat.  */
#include "breakpoint.h"

/* For enum target_signal.  */
#include "target.h"

/* Structure in which to save the status of the inferior.  Create/Save
   through "save_inferior_status", restore through
   "restore_inferior_status".

   This pair of routines should be called around any transfer of
   control to the inferior which you don't want showing up in your
   control variables.  */

#ifdef __STDC__
struct inferior_status;
#endif

extern struct inferior_status *save_inferior_status PARAMS ((int));

extern void restore_inferior_status PARAMS ((struct inferior_status *));

extern void discard_inferior_status PARAMS ((struct inferior_status *));

extern void write_inferior_status_register PARAMS ((struct inferior_status *inf_status, int regno, LONGEST val));

/* This macro gives the number of registers actually in use by the
   inferior.  This may be less than the total number of registers,
   perhaps depending on the actual CPU in use or program being run.  */

#ifndef ARCH_NUM_REGS
#define ARCH_NUM_REGS NUM_REGS
#endif

extern void set_sigint_trap PARAMS ((void));

extern void clear_sigint_trap PARAMS ((void));

extern void set_sigio_trap PARAMS ((void));

extern void clear_sigio_trap PARAMS ((void));

/* File name for default use for standard in/out in the inferior.  */

extern char *inferior_io_terminal;

/* Pid of our debugged inferior, or 0 if no inferior now.  */

extern int inferior_pid;

/* This is only valid when inferior_pid is non-zero.

   If this is 0, then exec events should be noticed and responded to
   by the debugger (i.e., be reported to the user).

   If this is > 0, then that many subsequent exec events should be
   ignored (i.e., not be reported to the user).
   */
extern int inferior_ignoring_startup_exec_events;

/* This is only valid when inferior_ignoring_startup_exec_events is
   zero.

   Some targets (stupidly) report more than one exec event per actual
   call to an event() system call.  If only the last such exec event
   need actually be noticed and responded to by the debugger (i.e.,
   be reported to the user), then this is the number of "leading"
   exec events which should be ignored.
   */
extern int inferior_ignoring_leading_exec_events;

/* Inferior environment. */

extern struct environ *inferior_environ;

/* Character array containing an image of the inferior programs'
   registers. */

extern char *registers;

/* Character array containing the current state of each register
   (unavailable<0, valid=0, invalid>0). */

extern signed char *register_valid;

extern void clear_proceed_status PARAMS ((void));

extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int));

extern void kill_inferior PARAMS ((void));

extern void generic_mourn_inferior PARAMS ((void));

extern void terminal_ours PARAMS ((void));

extern int run_stack_dummy PARAMS ((CORE_ADDR, char*));

extern CORE_ADDR read_pc PARAMS ((void));

extern CORE_ADDR read_pc_pid PARAMS ((int));

extern void write_pc PARAMS ((CORE_ADDR));

extern void write_pc_pid PARAMS ((CORE_ADDR, int));

extern CORE_ADDR read_sp PARAMS ((void));

extern void write_sp PARAMS ((CORE_ADDR));

extern CORE_ADDR read_fp PARAMS ((void));

extern void write_fp PARAMS ((CORE_ADDR));

extern void wait_for_inferior PARAMS ((void));

extern void init_wait_for_inferior PARAMS ((void));

extern void close_exec_file PARAMS ((void));

extern void reopen_exec_file PARAMS ((void));

/* The `resume' routine should only be called in special circumstances.
   Normally, use `proceed', which handles a lot of bookkeeping.  */

extern void resume PARAMS ((int, enum target_signal));

/* From misc files */

extern void store_inferior_registers PARAMS ((int));

extern void fetch_inferior_registers PARAMS ((int));

extern void solib_create_inferior_hook PARAMS ((void));

extern void child_terminal_info PARAMS ((char *, int));

extern void term_info PARAMS ((char *, int));

extern void terminal_ours_for_output PARAMS ((void));

extern void terminal_inferior PARAMS ((void));

extern void terminal_init_inferior PARAMS ((void));

extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp));

/* From infptrace.c or infttrace.c */

extern int attach PARAMS ((int));

#if !defined(REQUIRE_ATTACH)
#define REQUIRE_ATTACH attach
#endif

#if !defined(REQUIRE_DETACH)
#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
#endif

extern void detach PARAMS ((int));

/* PTRACE method of waiting for inferior process.  */
int ptrace_wait PARAMS ((int, int *));

extern void child_resume PARAMS ((int, int, enum target_signal));

#ifndef PTRACE_ARG3_TYPE
#define PTRACE_ARG3_TYPE int	/* Correct definition for most systems. */
#endif

extern int call_ptrace PARAMS ((int, int, PTRACE_ARG3_TYPE, int));

extern void pre_fork_inferior PARAMS ((void));

/* From procfs.c */

extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR)));

extern int procfs_first_available PARAMS ((void));

extern int procfs_get_pid_fd PARAMS ((int));

/* From fork-child.c */

extern void fork_inferior PARAMS ((char *, char *, char **,
				   void (*)(void),
				   void (*)(int),
				   void (*)(void),
				   char *));


extern void
clone_and_follow_inferior PARAMS ((int, int *));

extern void startup_inferior PARAMS ((int));

/* From inflow.c */

extern void new_tty_prefork PARAMS ((char *));

extern int gdb_has_a_terminal PARAMS ((void));

/* From infrun.c */

extern void start_remote PARAMS ((void));

extern void normal_stop PARAMS ((void));

extern int signal_stop_state PARAMS ((int));

extern int signal_print_state PARAMS ((int));

extern int signal_pass_state PARAMS ((int));

/* From infcmd.c */

extern void tty_command PARAMS ((char *, int));

extern void attach_command PARAMS ((char *, int));

/* Last signal that the inferior received (why it stopped).  */

extern enum target_signal stop_signal;

/* Address at which inferior stopped.  */

extern CORE_ADDR stop_pc;

/* Chain containing status of breakpoint(s) that we have stopped at.  */

extern bpstat stop_bpstat;

/* Flag indicating that a command has proceeded the inferior past the
   current breakpoint.  */

extern int breakpoint_proceeded;

/* Nonzero if stopped due to a step command.  */

extern int stop_step;

/* Nonzero if stopped due to completion of a stack dummy routine.  */

extern int stop_stack_dummy;

/* Nonzero if program stopped due to a random (unexpected) signal in
   inferior process.  */

extern int stopped_by_random_signal;

/* Range to single step within.
   If this is nonzero, respond to a single-step signal
   by continuing to step if the pc is in this range.

   If step_range_start and step_range_end are both 1, it means to step for
   a single instruction (FIXME: it might clean up wait_for_inferior in a
   minor way if this were changed to the address of the instruction and
   that address plus one.  But maybe not.).  */

extern CORE_ADDR step_range_start;	/* Inclusive */
extern CORE_ADDR step_range_end;/* Exclusive */

/* Stack frame address as of when stepping command was issued.
   This is how we know when we step into a subroutine call,
   and how to set the frame for the breakpoint used to step out.  */

extern CORE_ADDR step_frame_address;

/* Our notion of the current stack pointer.  */

extern CORE_ADDR step_sp;

/* 1 means step over all subroutine calls.
   -1 means step over calls to undebuggable functions.  */

extern int step_over_calls;

/* If stepping, nonzero means step count is > 1
   so don't print frame next time inferior stops
   if it stops due to stepping.  */

extern int step_multi;

/* Nonzero means expecting a trap and caller will handle it themselves.
   It is used after attach, due to attaching to a process;
   when running in the shell before the child program has been exec'd;
   and when running some kinds of remote stuff (FIXME?).  */

extern int stop_soon_quietly;

/* Nonzero if proceed is being used for a "finish" command or a similar
   situation when stop_registers should be saved.  */

extern int proceed_to_finish;

/* Save register contents here when about to pop a stack dummy frame,
   if-and-only-if proceed_to_finish is set.
   Thus this contains the return value from the called function (assuming
   values are returned in a register).  */

extern char *stop_registers;

/* Nonzero if the child process in inferior_pid was attached rather
   than forked.  */

extern int attach_flag;
\f
/* Sigtramp is a routine that the kernel calls (which then calls the
   signal handler).  On most machines it is a library routine that
   is linked into the executable.

   This macro, given a program counter value and the name of the
   function in which that PC resides (which can be null if the
   name is not known), returns nonzero if the PC and name show
   that we are in sigtramp.

   On most machines just see if the name is sigtramp (and if we have
   no name, assume we are not in sigtramp).  */
#if !defined (IN_SIGTRAMP)
#if defined (SIGTRAMP_START)
#define IN_SIGTRAMP(pc, name) \
       ((pc) >= SIGTRAMP_START(pc)   \
        && (pc) < SIGTRAMP_END(pc) \
        )
#else
#define IN_SIGTRAMP(pc, name) \
       (name && STREQ ("_sigtramp", name))
#endif
#endif
\f
/* Possible values for CALL_DUMMY_LOCATION.  */
#define ON_STACK 1
#define BEFORE_TEXT_END 2
#define AFTER_TEXT_END 3
#define AT_ENTRY_POINT 4

#if !defined (USE_GENERIC_DUMMY_FRAMES)
#define USE_GENERIC_DUMMY_FRAMES 0
#endif

#if !defined (CALL_DUMMY_LOCATION)
#define CALL_DUMMY_LOCATION ON_STACK
#endif /* No CALL_DUMMY_LOCATION.  */

#if !defined (CALL_DUMMY_ADDRESS)
#define CALL_DUMMY_ADDRESS() (abort (), 0) /* anything to abort GDB */
#endif
#if !defined (CALL_DUMMY_START_OFFSET)
#define CALL_DUMMY_START_OFFSET (abort (), 0) /* anything to abort GDB */
#endif
#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
#define CALL_DUMMY_BREAKPOINT_OFFSET (abort (), 0) /* anything to abort GDB */
#endif
#if !defined CALL_DUMMY_BREAKPOINT_OFFSET_P
#define CALL_DUMMY_BREAKPOINT_OFFSET_P (1)
#endif
#if !defined (CALL_DUMMY_LENGTH)
#define CALL_DUMMY_LENGTH (abort (), 0) /* anything to abort GDB */
#endif

#if defined (CALL_DUMMY_STACK_ADJUST)
#if !defined (CALL_DUMMY_STACK_ADJUST_P)
#define CALL_DUMMY_STACK_ADJUST_P (1)
#endif
#endif
#if !defined (CALL_DUMMY_STACK_ADJUST)
#define CALL_DUMMY_STACK_ADJUST (abort (), 0)
#endif
#if !defined (CALL_DUMMY_STACK_ADJUST_P)
#define CALL_DUMMY_STACK_ADJUST_P (0)
#endif

#if !defined (CALL_DUMMY_P)
#if defined (CALL_DUMMY)
#define CALL_DUMMY_P 1
#else
#define CALL_DUMMY_P 0
#endif
#endif

#if !defined (CALL_DUMMY_WORDS)
#if defined (CALL_DUMMY)
extern LONGEST call_dummy_words[];
#define CALL_DUMMY_WORDS (call_dummy_words)
#else
#define CALL_DUMMY_WORDS (abort (), (void*) 0) /* anything to abort GDB */
#endif
#endif

#if !defined (SIZEOF_CALL_DUMMY_WORDS)
#if defined (CALL_DUMMY)
extern int sizeof_call_dummy_words;
#define SIZEOF_CALL_DUMMY_WORDS (sizeof_call_dummy_words)
#else
#define SIZEOF_CALL_DUMMY_WORDS (abort (), 0) /* anything to abort GDB */
#endif
#endif

#if !defined PUSH_DUMMY_FRAME
#define PUSH_DUMMY_FRAME (abort ())
#endif

#if !defined FIX_CALL_DUMMY
#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (abort ())
#endif

#if !defined STORE_STRUCT_RETURN
#define STORE_STRUCT_RETURN(a1,a2) (abort ())
#endif


/* Are we in a call dummy? */

extern int pc_in_call_dummy_before_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == BEFORE_TEXT_END
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_before_text_end (pc, sp, frame_address)
#endif /* Before text_end.  */

extern int pc_in_call_dummy_after_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AFTER_TEXT_END
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_after_text_end (pc, sp, frame_address) 
#endif

extern int pc_in_call_dummy_on_stack PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == ON_STACK
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_on_stack (pc, sp, frame_address)
#endif

extern int pc_in_call_dummy_at_entry_point PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AT_ENTRY_POINT
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_at_entry_point (pc, sp, frame_address)
#endif

/* It's often not enough for our clients to know whether the PC is merely
   somewhere within the call dummy.  They may need to know whether the
   call dummy has actually completed.  (For example, wait_for_inferior
   wants to know when it should truly stop because the call dummy has
   completed.  If we're single-stepping because of slow watchpoints,
   then we may find ourselves stopped at the entry of the call dummy,
   and want to continue stepping until we reach the end.)

   Note that this macro is intended for targets (like HP-UX) which
   require more than a single breakpoint in their call dummies, and
   therefore cannot use the CALL_DUMMY_BREAKPOINT_OFFSET mechanism.

   If a target does define CALL_DUMMY_BREAKPOINT_OFFSET, then this
   default implementation of CALL_DUMMY_HAS_COMPLETED is sufficient.
   Else, a target may wish to supply an implementation that works in
   the presense of multiple breakpoints in its call dummy.
   */
#if !defined(CALL_DUMMY_HAS_COMPLETED)
#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
  PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
#endif

/* If STARTUP_WITH_SHELL is set, GDB's "run"
   will attempts to start up the debugee under a shell.
   This is in order for argument-expansion to occur. E.g.,
   (gdb) run *
   The "*" gets expanded by the shell into a list of files.
   While this is a nice feature, it turns out to interact badly
   with some of the catch-fork/catch-exec features we have added.
   In particular, if the shell does any fork/exec's before
   the exec of the target program, that can confuse GDB.
   To disable this feature, set STARTUP_WITH_SHELL to 0.
   To enable this feature, set STARTUP_WITH_SHELL to 1.
   The catch-exec traps expected during start-up will
   be 1 if target is not started up with a shell, 2 if it is.
   - RT
   If you disable this, you need to decrement
   START_INFERIOR_TRAPS_EXPECTED in tm.h. */
#define STARTUP_WITH_SHELL 1
#if !defined(START_INFERIOR_TRAPS_EXPECTED)
#define START_INFERIOR_TRAPS_EXPECTED	2
#endif
#endif /* !defined (INFERIOR_H) */
Commit	Line	Data
c906108c SS	1	/* Variables that describe the inferior process running under GDB:
	2	Where it is, why it stopped, and how to step it.
	3	Copyright 1986, 1989, 1992, 1996, 1998 Free Software Foundation, Inc.
	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	20
	21	#if !defined (INFERIOR_H)
	22	#define INFERIOR_H 1
	23
	24	/* For bpstat. */
	25	#include "breakpoint.h"
	26
	27	/* For enum target_signal. */
	28	#include "target.h"
	29
7a292a7a	30	/* Structure in which to save the status of the inferior. Create/Save
c906108c SS	31	through "save_inferior_status", restore through
c906108c SS	32	"restore_inferior_status".
7a292a7a	33
c906108c SS	34	This pair of routines should be called around any transfer of
	35	control to the inferior which you don't want showing up in your
	36	control variables. */
	37
7a292a7a SS	38	#ifdef __STDC__
	39	struct inferior_status;
	40	#endif
	41
	42	extern struct inferior_status *save_inferior_status PARAMS ((int));
	43
	44	extern void restore_inferior_status PARAMS ((struct inferior_status *));
	45
	46	extern void discard_inferior_status PARAMS ((struct inferior_status *));
	47
	48	extern void write_inferior_status_register PARAMS ((struct inferior_status *inf_status, int regno, LONGEST val));
c906108c SS	49
	50	/* This macro gives the number of registers actually in use by the
	51	inferior. This may be less than the total number of registers,
	52	perhaps depending on the actual CPU in use or program being run. */
	53
	54	#ifndef ARCH_NUM_REGS
	55	#define ARCH_NUM_REGS NUM_REGS
	56	#endif
	57
c906108c SS	58	extern void set_sigint_trap PARAMS ((void));
	59
	60	extern void clear_sigint_trap PARAMS ((void));
	61
	62	extern void set_sigio_trap PARAMS ((void));
	63
	64	extern void clear_sigio_trap PARAMS ((void));
	65
	66	/* File name for default use for standard in/out in the inferior. */
	67
	68	extern char *inferior_io_terminal;
	69
	70	/* Pid of our debugged inferior, or 0 if no inferior now. */
	71
	72	extern int inferior_pid;
	73
	74	/* This is only valid when inferior_pid is non-zero.
	75
	76	If this is 0, then exec events should be noticed and responded to
	77	by the debugger (i.e., be reported to the user).
	78
	79	If this is > 0, then that many subsequent exec events should be
	80	ignored (i.e., not be reported to the user).
	81	*/
	82	extern int inferior_ignoring_startup_exec_events;
	83
	84	/* This is only valid when inferior_ignoring_startup_exec_events is
	85	zero.
	86
	87	Some targets (stupidly) report more than one exec event per actual
	88	call to an event() system call. If only the last such exec event
	89	need actually be noticed and responded to by the debugger (i.e.,
	90	be reported to the user), then this is the number of "leading"
	91	exec events which should be ignored.
	92	*/
	93	extern int inferior_ignoring_leading_exec_events;
	94
	95	/* Inferior environment. */
	96
	97	extern struct environ *inferior_environ;
	98
7a292a7a SS	99	/* Character array containing an image of the inferior programs'
7a292a7a SS	100	registers. */
c906108c	101
7a292a7a	102	extern char *registers;
c906108c	103
7a292a7a SS	104	/* Character array containing the current state of each register
7a292a7a SS	105	(unavailable<0, valid=0, invalid>0). */
c906108c	106
7a292a7a	107	extern signed char *register_valid;
c906108c SS	108
	109	extern void clear_proceed_status PARAMS ((void));
	110
	111	extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int));
	112
	113	extern void kill_inferior PARAMS ((void));
	114
	115	extern void generic_mourn_inferior PARAMS ((void));
	116
	117	extern void terminal_ours PARAMS ((void));
	118
7a292a7a	119	extern int run_stack_dummy PARAMS ((CORE_ADDR, char*));
c906108c SS	120
	121	extern CORE_ADDR read_pc PARAMS ((void));
	122
	123	extern CORE_ADDR read_pc_pid PARAMS ((int));
	124
	125	extern void write_pc PARAMS ((CORE_ADDR));
	126
	127	extern void write_pc_pid PARAMS ((CORE_ADDR, int));
	128
	129	extern CORE_ADDR read_sp PARAMS ((void));
	130
	131	extern void write_sp PARAMS ((CORE_ADDR));
	132
	133	extern CORE_ADDR read_fp PARAMS ((void));
	134
	135	extern void write_fp PARAMS ((CORE_ADDR));
	136
	137	extern void wait_for_inferior PARAMS ((void));
	138
	139	extern void init_wait_for_inferior PARAMS ((void));
	140
	141	extern void close_exec_file PARAMS ((void));
	142
	143	extern void reopen_exec_file PARAMS ((void));
	144
	145	/* The `resume' routine should only be called in special circumstances.
	146	Normally, use `proceed', which handles a lot of bookkeeping. */
	147
	148	extern void resume PARAMS ((int, enum target_signal));
	149
	150	/* From misc files */
	151
	152	extern void store_inferior_registers PARAMS ((int));
	153
	154	extern void fetch_inferior_registers PARAMS ((int));
	155
	156	extern void solib_create_inferior_hook PARAMS ((void));
	157
	158	extern void child_terminal_info PARAMS ((char *, int));
	159
	160	extern void term_info PARAMS ((char *, int));
	161
	162	extern void terminal_ours_for_output PARAMS ((void));
	163
	164	extern void terminal_inferior PARAMS ((void));
	165
	166	extern void terminal_init_inferior PARAMS ((void));
	167
	168	extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp));
	169
	170	/* From infptrace.c or infttrace.c */
	171
	172	extern int attach PARAMS ((int));
	173
	174	#if !defined(REQUIRE_ATTACH)
	175	#define REQUIRE_ATTACH attach
	176	#endif
	177
	178	#if !defined(REQUIRE_DETACH)
	179	#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
	180	#endif
	181
	182	extern void detach PARAMS ((int));
	183
7a292a7a	184	/* PTRACE method of waiting for inferior process. */
c906108c SS	185	int ptrace_wait PARAMS ((int, int *));
	186
	187	extern void child_resume PARAMS ((int, int, enum target_signal));
	188
	189	#ifndef PTRACE_ARG3_TYPE
	190	#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
	191	#endif
	192
	193	extern int call_ptrace PARAMS ((int, int, PTRACE_ARG3_TYPE, int));
	194
	195	extern void pre_fork_inferior PARAMS ((void));
	196
	197	/* From procfs.c */
	198
	199	extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR)));
	200
	201	extern int procfs_first_available PARAMS ((void));
	202
	203	extern int procfs_get_pid_fd PARAMS ((int));
	204
	205	/* From fork-child.c */
	206
	207	extern void fork_inferior PARAMS ((char , char , char **,
	208	void (*)(void),
	209	void (*)(int),
	210	void (*)(void),
	211	char *));
	212
	213
	214	extern void
	215	clone_and_follow_inferior PARAMS ((int, int *));
	216
	217	extern void startup_inferior PARAMS ((int));
	218
	219	/* From inflow.c */
	220
	221	extern void new_tty_prefork PARAMS ((char *));
	222
	223	extern int gdb_has_a_terminal PARAMS ((void));
	224
	225	/* From infrun.c */
	226
	227	extern void start_remote PARAMS ((void));
	228
	229	extern void normal_stop PARAMS ((void));
	230
	231	extern int signal_stop_state PARAMS ((int));
	232
	233	extern int signal_print_state PARAMS ((int));
	234
	235	extern int signal_pass_state PARAMS ((int));
	236
	237	/* From infcmd.c */
	238
	239	extern void tty_command PARAMS ((char *, int));
	240
	241	extern void attach_command PARAMS ((char *, int));
	242
	243	/* Last signal that the inferior received (why it stopped). */
	244
	245	extern enum target_signal stop_signal;
	246
	247	/* Address at which inferior stopped. */
	248
249	extern CORE_ADDR stop_pc;
250
251	/* Chain containing status of breakpoint(s) that we have stopped at. */
252
253	extern bpstat stop_bpstat;
254
255	/* Flag indicating that a command has proceeded the inferior past the
256	current breakpoint. */
257
258	extern int breakpoint_proceeded;
259
260	/* Nonzero if stopped due to a step command. */
261
262	extern int stop_step;
263
264	/* Nonzero if stopped due to completion of a stack dummy routine. */
265
266	extern int stop_stack_dummy;
267
268	/* Nonzero if program stopped due to a random (unexpected) signal in
269	inferior process. */
270
271	extern int stopped_by_random_signal;
272
273	/* Range to single step within.
274	If this is nonzero, respond to a single-step signal
275	by continuing to step if the pc is in this range.
276
277	If step_range_start and step_range_end are both 1, it means to step for
278	a single instruction (FIXME: it might clean up wait_for_inferior in a
279	minor way if this were changed to the address of the instruction and
280	that address plus one. But maybe not.). */
281
282	extern CORE_ADDR step_range_start; /* Inclusive */
283	extern CORE_ADDR step_range_end;/* Exclusive */
284
285	/* Stack frame address as of when stepping command was issued.
286	This is how we know when we step into a subroutine call,
287	and how to set the frame for the breakpoint used to step out. */
288
289	extern CORE_ADDR step_frame_address;
290
291	/* Our notion of the current stack pointer. */
292
293	extern CORE_ADDR step_sp;
294
295	/* 1 means step over all subroutine calls.
296	-1 means step over calls to undebuggable functions. */
297
298	extern int step_over_calls;
299
300	/* If stepping, nonzero means step count is > 1
301	so don't print frame next time inferior stops
302	if it stops due to stepping. */
303
304	extern int step_multi;
305
306	/* Nonzero means expecting a trap and caller will handle it themselves.
307	It is used after attach, due to attaching to a process;
308	when running in the shell before the child program has been exec'd;
309	and when running some kinds of remote stuff (FIXME?). */
310
311	extern int stop_soon_quietly;
312
313	/* Nonzero if proceed is being used for a "finish" command or a similar
314	situation when stop_registers should be saved. */
315
316	extern int proceed_to_finish;
317
318	/* Save register contents here when about to pop a stack dummy frame,
319	if-and-only-if proceed_to_finish is set.
320	Thus this contains the return value from the called function (assuming
321	values are returned in a register). */
322
7a292a7a	323	extern char *stop_registers;
c906108c SS	324
	325	/* Nonzero if the child process in inferior_pid was attached rather
	326	than forked. */
	327
	328	extern int attach_flag;
	329	\f
	330	/* Sigtramp is a routine that the kernel calls (which then calls the
	331	signal handler). On most machines it is a library routine that
	332	is linked into the executable.
	333
	334	This macro, given a program counter value and the name of the
	335	function in which that PC resides (which can be null if the
	336	name is not known), returns nonzero if the PC and name show
	337	that we are in sigtramp.
	338
	339	On most machines just see if the name is sigtramp (and if we have
	340	no name, assume we are not in sigtramp). */
	341	#if !defined (IN_SIGTRAMP)
	342	#if defined (SIGTRAMP_START)
	343	#define IN_SIGTRAMP(pc, name) \
	344	((pc) >= SIGTRAMP_START(pc) \
	345	&& (pc) < SIGTRAMP_END(pc) \
	346	)
	347	#else
	348	#define IN_SIGTRAMP(pc, name) \
	349	(name && STREQ ("_sigtramp", name))
	350	#endif
	351	#endif
	352	\f
	353	/* Possible values for CALL_DUMMY_LOCATION. */
	354	#define ON_STACK 1
	355	#define BEFORE_TEXT_END 2
	356	#define AFTER_TEXT_END 3
	357	#define AT_ENTRY_POINT 4
	358
7a292a7a SS	359	#if !defined (USE_GENERIC_DUMMY_FRAMES)
	360	#define USE_GENERIC_DUMMY_FRAMES 0
	361	#endif
	362
c906108c SS	363	#if !defined (CALL_DUMMY_LOCATION)
	364	#define CALL_DUMMY_LOCATION ON_STACK
	365	#endif /* No CALL_DUMMY_LOCATION. */
	366
7a292a7a SS	367	#if !defined (CALL_DUMMY_ADDRESS)
	368	#define CALL_DUMMY_ADDRESS() (abort (), 0) /* anything to abort GDB */
	369	#endif
	370	#if !defined (CALL_DUMMY_START_OFFSET)
	371	#define CALL_DUMMY_START_OFFSET (abort (), 0) /* anything to abort GDB */
	372	#endif
	373	#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
	374	#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
	375	#define CALL_DUMMY_BREAKPOINT_OFFSET (abort (), 0) /* anything to abort GDB */
	376	#endif
	377	#if !defined CALL_DUMMY_BREAKPOINT_OFFSET_P
	378	#define CALL_DUMMY_BREAKPOINT_OFFSET_P (1)
	379	#endif
	380	#if !defined (CALL_DUMMY_LENGTH)
	381	#define CALL_DUMMY_LENGTH (abort (), 0) /* anything to abort GDB */
	382	#endif
	383
	384	#if defined (CALL_DUMMY_STACK_ADJUST)
	385	#if !defined (CALL_DUMMY_STACK_ADJUST_P)
	386	#define CALL_DUMMY_STACK_ADJUST_P (1)
	387	#endif
	388	#endif
	389	#if !defined (CALL_DUMMY_STACK_ADJUST)
	390	#define CALL_DUMMY_STACK_ADJUST (abort (), 0)
	391	#endif
	392	#if !defined (CALL_DUMMY_STACK_ADJUST_P)
	393	#define CALL_DUMMY_STACK_ADJUST_P (0)
	394	#endif
	395
	396	#if !defined (CALL_DUMMY_P)
	397	#if defined (CALL_DUMMY)
	398	#define CALL_DUMMY_P 1
	399	#else
	400	#define CALL_DUMMY_P 0
	401	#endif
	402	#endif
	403
	404	#if !defined (CALL_DUMMY_WORDS)
	405	#if defined (CALL_DUMMY)
	406	extern LONGEST call_dummy_words[];
	407	#define CALL_DUMMY_WORDS (call_dummy_words)
	408	#else
	409	#define CALL_DUMMY_WORDS (abort (), (void) 0) / anything to abort GDB */
	410	#endif
	411	#endif
	412
	413	#if !defined (SIZEOF_CALL_DUMMY_WORDS)
	414	#if defined (CALL_DUMMY)
	415	extern int sizeof_call_dummy_words;
	416	#define SIZEOF_CALL_DUMMY_WORDS (sizeof_call_dummy_words)
	417	#else
	418	#define SIZEOF_CALL_DUMMY_WORDS (abort (), 0) /* anything to abort GDB */
	419	#endif
	420	#endif
	421
	422	#if !defined PUSH_DUMMY_FRAME
	423	#define PUSH_DUMMY_FRAME (abort ())
	424	#endif
	425
	426	#if !defined FIX_CALL_DUMMY
	427	#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (abort ())
	428	#endif
	429
	430	#if !defined STORE_STRUCT_RETURN
431	#define STORE_STRUCT_RETURN(a1,a2) (abort ())
432	#endif
433
434
435	/* Are we in a call dummy? */
436
437	extern int pc_in_call_dummy_before_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
438	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == BEFORE_TEXT_END
439	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_before_text_end (pc, sp, frame_address)
c906108c SS	440	#endif /* Before text_end. */
c906108c SS	441
7a292a7a SS	442	extern int pc_in_call_dummy_after_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
	443	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AFTER_TEXT_END
	444	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_after_text_end (pc, sp, frame_address)
	445	#endif
	446
	447	extern int pc_in_call_dummy_on_stack PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
	448	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == ON_STACK
	449	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_on_stack (pc, sp, frame_address)
	450	#endif
	451
	452	extern int pc_in_call_dummy_at_entry_point PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
	453	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AT_ENTRY_POINT
	454	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_at_entry_point (pc, sp, frame_address)
	455	#endif
c906108c SS	456
	457	/* It's often not enough for our clients to know whether the PC is merely
	458	somewhere within the call dummy. They may need to know whether the
	459	call dummy has actually completed. (For example, wait_for_inferior
	460	wants to know when it should truly stop because the call dummy has
	461	completed. If we're single-stepping because of slow watchpoints,
	462	then we may find ourselves stopped at the entry of the call dummy,
	463	and want to continue stepping until we reach the end.)
	464
	465	Note that this macro is intended for targets (like HP-UX) which
	466	require more than a single breakpoint in their call dummies, and
	467	therefore cannot use the CALL_DUMMY_BREAKPOINT_OFFSET mechanism.
	468
	469	If a target does define CALL_DUMMY_BREAKPOINT_OFFSET, then this
	470	default implementation of CALL_DUMMY_HAS_COMPLETED is sufficient.
	471	Else, a target may wish to supply an implementation that works in
	472	the presense of multiple breakpoints in its call dummy.
	473	*/
	474	#if !defined(CALL_DUMMY_HAS_COMPLETED)
	475	#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
	476	PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
	477	#endif
	478
	479	/* If STARTUP_WITH_SHELL is set, GDB's "run"
	480	will attempts to start up the debugee under a shell.
	481	This is in order for argument-expansion to occur. E.g.,
	482	(gdb) run *
	483	The "*" gets expanded by the shell into a list of files.
	484	While this is a nice feature, it turns out to interact badly
	485	with some of the catch-fork/catch-exec features we have added.
	486	In particular, if the shell does any fork/exec's before
	487	the exec of the target program, that can confuse GDB.
	488	To disable this feature, set STARTUP_WITH_SHELL to 0.
	489	To enable this feature, set STARTUP_WITH_SHELL to 1.
	490	The catch-exec traps expected during start-up will
	491	be 1 if target is not started up with a shell, 2 if it is.
	492	- RT
	493	If you disable this, you need to decrement
	494	START_INFERIOR_TRAPS_EXPECTED in tm.h. */
	495	#define STARTUP_WITH_SHELL 1
	496	#if !defined(START_INFERIOR_TRAPS_EXPECTED)
	497	#define START_INFERIOR_TRAPS_EXPECTED 2
	498	#endif
	499	#endif /* !defined (INFERIOR_H) */