[deliverable/binutils-gdb.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;

/* Is the inferior running right now, as a result of a 'run&',
   'continue&' etc command? This is used in asycn gdb to determine
   whether a command that the user enters while the target is running
   is allowed or not. */
extern int target_executing;

/* Are we simulating synchronous execution? This is used in async gdb
   to implement the 'run', 'continue' etc commands, which will not
   redisplay the prompt until the execution is actually over. */
extern int sync_execution;

/* 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 CORE_ADDR generic_target_read_pc PARAMS ((int));

extern void write_pc PARAMS ((CORE_ADDR));

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

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

extern CORE_ADDR read_sp PARAMS ((void));

extern CORE_ADDR generic_target_read_sp PARAMS ((void));

extern void write_sp PARAMS ((CORE_ADDR));

extern void generic_target_write_sp PARAMS ((CORE_ADDR));

extern CORE_ADDR read_fp PARAMS ((void));

extern CORE_ADDR generic_target_read_fp PARAMS ((void));

extern void write_fp PARAMS ((CORE_ADDR));

extern void generic_target_write_fp PARAMS ((CORE_ADDR));

extern void wait_for_inferior PARAMS ((void));

extern void fetch_inferior_event 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 !GDB_MULTI_ARCH
#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.  */
#endif

extern int pc_in_call_dummy_after_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !GDB_MULTI_ARCH
#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
#endif

extern int pc_in_call_dummy_on_stack PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !GDB_MULTI_ARCH
#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
#endif

extern int pc_in_call_dummy_at_entry_point PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
#if !GDB_MULTI_ARCH
#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
#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
43ff13b4 JM	74	/* Is the inferior running right now, as a result of a 'run&',
	75	'continue&' etc command? This is used in asycn gdb to determine
	76	whether a command that the user enters while the target is running
	77	is allowed or not. */
	78	extern int target_executing;
	79
	80	/* Are we simulating synchronous execution? This is used in async gdb
	81	to implement the 'run', 'continue' etc commands, which will not
	82	redisplay the prompt until the execution is actually over. */
	83	extern int sync_execution;
	84
c906108c SS	85	/* This is only valid when inferior_pid is non-zero.
	86
	87	If this is 0, then exec events should be noticed and responded to
	88	by the debugger (i.e., be reported to the user).
	89
	90	If this is > 0, then that many subsequent exec events should be
	91	ignored (i.e., not be reported to the user).
	92	*/
	93	extern int inferior_ignoring_startup_exec_events;
	94
	95	/* This is only valid when inferior_ignoring_startup_exec_events is
	96	zero.
	97
	98	Some targets (stupidly) report more than one exec event per actual
	99	call to an event() system call. If only the last such exec event
	100	need actually be noticed and responded to by the debugger (i.e.,
	101	be reported to the user), then this is the number of "leading"
	102	exec events which should be ignored.
	103	*/
	104	extern int inferior_ignoring_leading_exec_events;
	105
	106	/* Inferior environment. */
	107
	108	extern struct environ *inferior_environ;
	109
7a292a7a SS	110	/* Character array containing an image of the inferior programs'
7a292a7a SS	111	registers. */
c906108c	112
7a292a7a	113	extern char *registers;
c906108c	114
7a292a7a SS	115	/* Character array containing the current state of each register
7a292a7a SS	116	(unavailable<0, valid=0, invalid>0). */
c906108c	117
7a292a7a	118	extern signed char *register_valid;
c906108c SS	119
	120	extern void clear_proceed_status PARAMS ((void));
	121
	122	extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int));
	123
	124	extern void kill_inferior PARAMS ((void));
	125
	126	extern void generic_mourn_inferior PARAMS ((void));
	127
	128	extern void terminal_ours PARAMS ((void));
	129
7a292a7a	130	extern int run_stack_dummy PARAMS ((CORE_ADDR, char*));
c906108c SS	131
	132	extern CORE_ADDR read_pc PARAMS ((void));
	133
	134	extern CORE_ADDR read_pc_pid PARAMS ((int));
	135
0f71a2f6 JM	136	extern CORE_ADDR generic_target_read_pc PARAMS ((int));
0f71a2f6 JM	137
c906108c SS	138	extern void write_pc PARAMS ((CORE_ADDR));
	139
	140	extern void write_pc_pid PARAMS ((CORE_ADDR, int));
	141
0f71a2f6 JM	142	extern void generic_target_write_pc PARAMS ((CORE_ADDR, int));
0f71a2f6 JM	143
c906108c SS	144	extern CORE_ADDR read_sp PARAMS ((void));
c906108c SS	145
0f71a2f6 JM	146	extern CORE_ADDR generic_target_read_sp PARAMS ((void));
0f71a2f6 JM	147
c906108c SS	148	extern void write_sp PARAMS ((CORE_ADDR));
c906108c SS	149
0f71a2f6 JM	150	extern void generic_target_write_sp PARAMS ((CORE_ADDR));
0f71a2f6 JM	151
c906108c SS	152	extern CORE_ADDR read_fp PARAMS ((void));
c906108c SS	153
0f71a2f6 JM	154	extern CORE_ADDR generic_target_read_fp PARAMS ((void));
0f71a2f6 JM	155
c906108c SS	156	extern void write_fp PARAMS ((CORE_ADDR));
c906108c SS	157
0f71a2f6 JM	158	extern void generic_target_write_fp PARAMS ((CORE_ADDR));
0f71a2f6 JM	159
c906108c SS	160	extern void wait_for_inferior PARAMS ((void));
c906108c SS	161
43ff13b4 JM	162	extern void fetch_inferior_event PARAMS ((void));
43ff13b4 JM	163
c906108c SS	164	extern void init_wait_for_inferior PARAMS ((void));
	165
	166	extern void close_exec_file PARAMS ((void));
	167
	168	extern void reopen_exec_file PARAMS ((void));
	169
	170	/* The `resume' routine should only be called in special circumstances.
	171	Normally, use `proceed', which handles a lot of bookkeeping. */
	172
	173	extern void resume PARAMS ((int, enum target_signal));
	174
	175	/* From misc files */
	176
	177	extern void store_inferior_registers PARAMS ((int));
	178
	179	extern void fetch_inferior_registers PARAMS ((int));
	180
	181	extern void solib_create_inferior_hook PARAMS ((void));
	182
	183	extern void child_terminal_info PARAMS ((char *, int));
	184
	185	extern void term_info PARAMS ((char *, int));
	186
	187	extern void terminal_ours_for_output PARAMS ((void));
	188
	189	extern void terminal_inferior PARAMS ((void));
	190
	191	extern void terminal_init_inferior PARAMS ((void));
	192
	193	extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp));
	194
	195	/* From infptrace.c or infttrace.c */
	196
	197	extern int attach PARAMS ((int));
	198
	199	#if !defined(REQUIRE_ATTACH)
	200	#define REQUIRE_ATTACH attach
	201	#endif
	202
	203	#if !defined(REQUIRE_DETACH)
	204	#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
	205	#endif
	206
	207	extern void detach PARAMS ((int));
	208
7a292a7a	209	/* PTRACE method of waiting for inferior process. */
c906108c SS	210	int ptrace_wait PARAMS ((int, int *));
	211
	212	extern void child_resume PARAMS ((int, int, enum target_signal));
	213
	214	#ifndef PTRACE_ARG3_TYPE
	215	#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
	216	#endif
	217
	218	extern int call_ptrace PARAMS ((int, int, PTRACE_ARG3_TYPE, int));
	219
	220	extern void pre_fork_inferior PARAMS ((void));
	221
	222	/* From procfs.c */
	223
	224	extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR)));
	225
	226	extern int procfs_first_available PARAMS ((void));
	227
	228	extern int procfs_get_pid_fd PARAMS ((int));
	229
	230	/* From fork-child.c */
	231
	232	extern void fork_inferior PARAMS ((char , char , char **,
	233	void (*)(void),
	234	void (*)(int),
	235	void (*)(void),
	236	char *));
	237
	238
	239	extern void
	240	clone_and_follow_inferior PARAMS ((int, int *));
	241
	242	extern void startup_inferior PARAMS ((int));
	243
	244	/* From inflow.c */
	245
	246	extern void new_tty_prefork PARAMS ((char *));
	247
	248	extern int gdb_has_a_terminal PARAMS ((void));
	249
	250	/* From infrun.c */
	251
	252	extern void start_remote PARAMS ((void));
	253
	254	extern void normal_stop PARAMS ((void));
	255
	256	extern int signal_stop_state PARAMS ((int));
	257
	258	extern int signal_print_state PARAMS ((int));
	259
	260	extern int signal_pass_state PARAMS ((int));
	261
	262	/* From infcmd.c */
	263
	264	extern void tty_command PARAMS ((char *, int));
	265
	266	extern void attach_command PARAMS ((char *, int));
	267
	268	/* Last signal that the inferior received (why it stopped). */
	269
	270	extern enum target_signal stop_signal;
	271
	272	/* Address at which inferior stopped. */
	273
274	extern CORE_ADDR stop_pc;
275
276	/* Chain containing status of breakpoint(s) that we have stopped at. */
277
278	extern bpstat stop_bpstat;
279
280	/* Flag indicating that a command has proceeded the inferior past the
281	current breakpoint. */
282
283	extern int breakpoint_proceeded;
284
285	/* Nonzero if stopped due to a step command. */
286
287	extern int stop_step;
288
289	/* Nonzero if stopped due to completion of a stack dummy routine. */
290
291	extern int stop_stack_dummy;
292
293	/* Nonzero if program stopped due to a random (unexpected) signal in
294	inferior process. */
295
296	extern int stopped_by_random_signal;
297
298	/* Range to single step within.
299	If this is nonzero, respond to a single-step signal
300	by continuing to step if the pc is in this range.
301
302	If step_range_start and step_range_end are both 1, it means to step for
303	a single instruction (FIXME: it might clean up wait_for_inferior in a
304	minor way if this were changed to the address of the instruction and
305	that address plus one. But maybe not.). */
306
307	extern CORE_ADDR step_range_start; /* Inclusive */
308	extern CORE_ADDR step_range_end;/* Exclusive */
309
310	/* Stack frame address as of when stepping command was issued.
311	This is how we know when we step into a subroutine call,
312	and how to set the frame for the breakpoint used to step out. */
313
314	extern CORE_ADDR step_frame_address;
315
316	/* Our notion of the current stack pointer. */
317
318	extern CORE_ADDR step_sp;
319
320	/* 1 means step over all subroutine calls.
321	-1 means step over calls to undebuggable functions. */
322
323	extern int step_over_calls;
324
325	/* If stepping, nonzero means step count is > 1
326	so don't print frame next time inferior stops
327	if it stops due to stepping. */
328
329	extern int step_multi;
330
331	/* Nonzero means expecting a trap and caller will handle it themselves.
332	It is used after attach, due to attaching to a process;
333	when running in the shell before the child program has been exec'd;
334	and when running some kinds of remote stuff (FIXME?). */
335
336	extern int stop_soon_quietly;
337
338	/* Nonzero if proceed is being used for a "finish" command or a similar
339	situation when stop_registers should be saved. */
340
341	extern int proceed_to_finish;
342
343	/* Save register contents here when about to pop a stack dummy frame,
344	if-and-only-if proceed_to_finish is set.
345	Thus this contains the return value from the called function (assuming
346	values are returned in a register). */
347
7a292a7a	348	extern char *stop_registers;
c906108c SS	349
	350	/* Nonzero if the child process in inferior_pid was attached rather
	351	than forked. */
	352
	353	extern int attach_flag;
	354	\f
	355	/* Sigtramp is a routine that the kernel calls (which then calls the
	356	signal handler). On most machines it is a library routine that
	357	is linked into the executable.
	358
	359	This macro, given a program counter value and the name of the
	360	function in which that PC resides (which can be null if the
	361	name is not known), returns nonzero if the PC and name show
	362	that we are in sigtramp.
	363
	364	On most machines just see if the name is sigtramp (and if we have
	365	no name, assume we are not in sigtramp). */
	366	#if !defined (IN_SIGTRAMP)
	367	#if defined (SIGTRAMP_START)
	368	#define IN_SIGTRAMP(pc, name) \
	369	((pc) >= SIGTRAMP_START(pc) \
	370	&& (pc) < SIGTRAMP_END(pc) \
	371	)
	372	#else
	373	#define IN_SIGTRAMP(pc, name) \
	374	(name && STREQ ("_sigtramp", name))
	375	#endif
	376	#endif
	377	\f
	378	/* Possible values for CALL_DUMMY_LOCATION. */
	379	#define ON_STACK 1
	380	#define BEFORE_TEXT_END 2
	381	#define AFTER_TEXT_END 3
	382	#define AT_ENTRY_POINT 4
	383
7a292a7a SS	384	#if !defined (USE_GENERIC_DUMMY_FRAMES)
	385	#define USE_GENERIC_DUMMY_FRAMES 0
	386	#endif
	387
c906108c SS	388	#if !defined (CALL_DUMMY_LOCATION)
	389	#define CALL_DUMMY_LOCATION ON_STACK
	390	#endif /* No CALL_DUMMY_LOCATION. */
	391
7a292a7a SS	392	#if !defined (CALL_DUMMY_ADDRESS)
	393	#define CALL_DUMMY_ADDRESS() (abort (), 0) /* anything to abort GDB */
	394	#endif
	395	#if !defined (CALL_DUMMY_START_OFFSET)
	396	#define CALL_DUMMY_START_OFFSET (abort (), 0) /* anything to abort GDB */
	397	#endif
	398	#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
	399	#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
	400	#define CALL_DUMMY_BREAKPOINT_OFFSET (abort (), 0) /* anything to abort GDB */
	401	#endif
	402	#if !defined CALL_DUMMY_BREAKPOINT_OFFSET_P
	403	#define CALL_DUMMY_BREAKPOINT_OFFSET_P (1)
	404	#endif
	405	#if !defined (CALL_DUMMY_LENGTH)
	406	#define CALL_DUMMY_LENGTH (abort (), 0) /* anything to abort GDB */
	407	#endif
	408
	409	#if defined (CALL_DUMMY_STACK_ADJUST)
	410	#if !defined (CALL_DUMMY_STACK_ADJUST_P)
	411	#define CALL_DUMMY_STACK_ADJUST_P (1)
	412	#endif
	413	#endif
	414	#if !defined (CALL_DUMMY_STACK_ADJUST)
	415	#define CALL_DUMMY_STACK_ADJUST (abort (), 0)
	416	#endif
	417	#if !defined (CALL_DUMMY_STACK_ADJUST_P)
	418	#define CALL_DUMMY_STACK_ADJUST_P (0)
	419	#endif
	420
	421	#if !defined (CALL_DUMMY_P)
	422	#if defined (CALL_DUMMY)
	423	#define CALL_DUMMY_P 1
	424	#else
	425	#define CALL_DUMMY_P 0
	426	#endif
	427	#endif
	428
	429	#if !defined (CALL_DUMMY_WORDS)
	430	#if defined (CALL_DUMMY)
	431	extern LONGEST call_dummy_words[];
	432	#define CALL_DUMMY_WORDS (call_dummy_words)
	433	#else
	434	#define CALL_DUMMY_WORDS (abort (), (void) 0) / anything to abort GDB */
	435	#endif
	436	#endif
	437
	438	#if !defined (SIZEOF_CALL_DUMMY_WORDS)
	439	#if defined (CALL_DUMMY)
	440	extern int sizeof_call_dummy_words;
	441	#define SIZEOF_CALL_DUMMY_WORDS (sizeof_call_dummy_words)
	442	#else
	443	#define SIZEOF_CALL_DUMMY_WORDS (abort (), 0) /* anything to abort GDB */
	444	#endif
	445	#endif
	446
	447	#if !defined PUSH_DUMMY_FRAME
	448	#define PUSH_DUMMY_FRAME (abort ())
	449	#endif
	450
	451	#if !defined FIX_CALL_DUMMY
	452	#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (abort ())
	453	#endif
	454
	455	#if !defined STORE_STRUCT_RETURN
456	#define STORE_STRUCT_RETURN(a1,a2) (abort ())
457	#endif
458
459
460	/* Are we in a call dummy? */
461
462	extern int pc_in_call_dummy_before_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
0f71a2f6	463	#if !GDB_MULTI_ARCH
7a292a7a SS	464	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == BEFORE_TEXT_END
7a292a7a SS	465	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_before_text_end (pc, sp, frame_address)
c906108c	466	#endif /* Before text_end. */
0f71a2f6	467	#endif
c906108c	468
7a292a7a	469	extern int pc_in_call_dummy_after_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
0f71a2f6	470	#if !GDB_MULTI_ARCH
7a292a7a SS	471	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AFTER_TEXT_END
	472	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_after_text_end (pc, sp, frame_address)
	473	#endif
0f71a2f6	474	#endif
7a292a7a SS	475
7a292a7a SS	476	extern int pc_in_call_dummy_on_stack PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
0f71a2f6	477	#if !GDB_MULTI_ARCH
7a292a7a SS	478	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == ON_STACK
	479	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_on_stack (pc, sp, frame_address)
	480	#endif
0f71a2f6	481	#endif
7a292a7a SS	482
7a292a7a SS	483	extern int pc_in_call_dummy_at_entry_point PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
0f71a2f6	484	#if !GDB_MULTI_ARCH
7a292a7a SS	485	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AT_ENTRY_POINT
	486	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_at_entry_point (pc, sp, frame_address)
	487	#endif
0f71a2f6	488	#endif
c906108c SS	489
	490	/* It's often not enough for our clients to know whether the PC is merely
	491	somewhere within the call dummy. They may need to know whether the
	492	call dummy has actually completed. (For example, wait_for_inferior
	493	wants to know when it should truly stop because the call dummy has
	494	completed. If we're single-stepping because of slow watchpoints,
	495	then we may find ourselves stopped at the entry of the call dummy,
	496	and want to continue stepping until we reach the end.)
	497
	498	Note that this macro is intended for targets (like HP-UX) which
	499	require more than a single breakpoint in their call dummies, and
	500	therefore cannot use the CALL_DUMMY_BREAKPOINT_OFFSET mechanism.
	501
	502	If a target does define CALL_DUMMY_BREAKPOINT_OFFSET, then this
	503	default implementation of CALL_DUMMY_HAS_COMPLETED is sufficient.
	504	Else, a target may wish to supply an implementation that works in
	505	the presense of multiple breakpoints in its call dummy.
	506	*/
	507	#if !defined(CALL_DUMMY_HAS_COMPLETED)
	508	#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
	509	PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
	510	#endif
	511
	512	/* If STARTUP_WITH_SHELL is set, GDB's "run"
	513	will attempts to start up the debugee under a shell.
	514	This is in order for argument-expansion to occur. E.g.,
	515	(gdb) run *
	516	The "*" gets expanded by the shell into a list of files.
	517	While this is a nice feature, it turns out to interact badly
	518	with some of the catch-fork/catch-exec features we have added.
	519	In particular, if the shell does any fork/exec's before
	520	the exec of the target program, that can confuse GDB.
	521	To disable this feature, set STARTUP_WITH_SHELL to 0.
	522	To enable this feature, set STARTUP_WITH_SHELL to 1.
	523	The catch-exec traps expected during start-up will
	524	be 1 if target is not started up with a shell, 2 if it is.
	525	- RT
	526	If you disable this, you need to decrement
	527	START_INFERIOR_TRAPS_EXPECTED in tm.h. */
	528	#define STARTUP_WITH_SHELL 1
	529	#if !defined(START_INFERIOR_TRAPS_EXPECTED)
	530	#define START_INFERIOR_TRAPS_EXPECTED 2
	531	#endif
	532	#endif /* !defined (INFERIOR_H) */