[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.  */

struct inferior_status;

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 CORE_ADDR generic_pointer_to_address (struct type *type, char *buf);

extern void generic_address_to_pointer (struct type *type, char *buf,
					CORE_ADDR 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));

/* 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));

extern int signal_stop_update PARAMS ((int, int));

extern int signal_print_update PARAMS ((int, int));

extern int signal_pass_update PARAMS ((int, 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() (internal_error ("CALL_DUMMY_ADDRESS"), 0)
#endif
#if !defined (CALL_DUMMY_START_OFFSET)
#define CALL_DUMMY_START_OFFSET (internal_error ("CALL_DUMMY_START_OFFSET"), 0)
#endif
#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
#define CALL_DUMMY_BREAKPOINT_OFFSET (internal_error ("CALL_DUMMY_BREAKPOINT_OFFSET"), 0)
#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 (internal_error ("CALL_DUMMY_LENGTH"), 0)
#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 (internal_error ("CALL_DUMMY_STACK_ADJUST"), 0)
#endif
#if !defined (CALL_DUMMY_STACK_ADJUST_P)
#define CALL_DUMMY_STACK_ADJUST_P (0)
#endif

/* FIXME: cagney/2000-04-17: gdbarch should manage this.  The default
   shouldn't be necessary. */

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

#if !defined PUSH_DUMMY_FRAME
#define PUSH_DUMMY_FRAME (internal_error ("PUSH_DUMMY_FRAME"), 0)
#endif

#if !defined FIX_CALL_DUMMY
#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error ("FIX_CALL_DUMMY"), 0)
#endif

#if !defined STORE_STRUCT_RETURN
#define STORE_STRUCT_RETURN(a1,a2) (internal_error ("STORE_STRUCT_RETURN"), 0)
#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
c5aa993b	5	This file is part of GDB.
c906108c	6
c5aa993b JM	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.
c906108c	11
c5aa993b JM	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.
c906108c	16
c5aa993b JM	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,
	20	Boston, MA 02111-1307, USA. */
c906108c SS	21
	22	#if !defined (INFERIOR_H)
	23	#define INFERIOR_H 1
	24
	25	/* For bpstat. */
	26	#include "breakpoint.h"
	27
	28	/* For enum target_signal. */
	29	#include "target.h"
	30
7a292a7a	31	/* Structure in which to save the status of the inferior. Create/Save
c906108c SS	32	through "save_inferior_status", restore through
c906108c SS	33	"restore_inferior_status".
7a292a7a	34
c906108c SS	35	This pair of routines should be called around any transfer of
	36	control to the inferior which you don't want showing up in your
	37	control variables. */
	38
7a292a7a	39	struct inferior_status;
7a292a7a SS	40
	41	extern struct inferior_status *save_inferior_status PARAMS ((int));
	42
	43	extern void restore_inferior_status PARAMS ((struct inferior_status *));
	44
	45	extern void discard_inferior_status PARAMS ((struct inferior_status *));
	46
c5aa993b	47	extern void write_inferior_status_register PARAMS ((struct inferior_status * inf_status, int regno, LONGEST val));
c906108c SS	48
	49	/* This macro gives the number of registers actually in use by the
	50	inferior. This may be less than the total number of registers,
	51	perhaps depending on the actual CPU in use or program being run. */
	52
	53	#ifndef ARCH_NUM_REGS
	54	#define ARCH_NUM_REGS NUM_REGS
	55	#endif
	56
c906108c SS	57	extern void set_sigint_trap PARAMS ((void));
	58
	59	extern void clear_sigint_trap PARAMS ((void));
	60
	61	extern void set_sigio_trap PARAMS ((void));
	62
	63	extern void clear_sigio_trap PARAMS ((void));
	64
	65	/* File name for default use for standard in/out in the inferior. */
	66
	67	extern char *inferior_io_terminal;
	68
	69	/* Pid of our debugged inferior, or 0 if no inferior now. */
	70
	71	extern int inferior_pid;
	72
43ff13b4 JM	73	/* Is the inferior running right now, as a result of a 'run&',
	74	'continue&' etc command? This is used in asycn gdb to determine
	75	whether a command that the user enters while the target is running
	76	is allowed or not. */
	77	extern int target_executing;
	78
	79	/* Are we simulating synchronous execution? This is used in async gdb
	80	to implement the 'run', 'continue' etc commands, which will not
	81	redisplay the prompt until the execution is actually over. */
	82	extern int sync_execution;
	83
c906108c SS	84	/* This is only valid when inferior_pid is non-zero.
	85
	86	If this is 0, then exec events should be noticed and responded to
	87	by the debugger (i.e., be reported to the user).
	88
	89	If this is > 0, then that many subsequent exec events should be
	90	ignored (i.e., not be reported to the user).
c5aa993b	91	*/
c906108c SS	92	extern int inferior_ignoring_startup_exec_events;
	93
	94	/* This is only valid when inferior_ignoring_startup_exec_events is
	95	zero.
	96
	97	Some targets (stupidly) report more than one exec event per actual
	98	call to an event() system call. If only the last such exec event
	99	need actually be noticed and responded to by the debugger (i.e.,
	100	be reported to the user), then this is the number of "leading"
	101	exec events which should be ignored.
c5aa993b	102	*/
c906108c SS	103	extern int inferior_ignoring_leading_exec_events;
	104
	105	/* Inferior environment. */
	106
	107	extern struct environ *inferior_environ;
	108
7a292a7a SS	109	/* Character array containing an image of the inferior programs'
7a292a7a SS	110	registers. */
c906108c	111
7a292a7a	112	extern char *registers;
c906108c	113
7a292a7a SS	114	/* Character array containing the current state of each register
7a292a7a SS	115	(unavailable<0, valid=0, invalid>0). */
c906108c	116
7a292a7a	117	extern signed char *register_valid;
c906108c SS	118
	119	extern void clear_proceed_status PARAMS ((void));
	120
	121	extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int));
	122
	123	extern void kill_inferior PARAMS ((void));
	124
	125	extern void generic_mourn_inferior PARAMS ((void));
	126
	127	extern void terminal_ours PARAMS ((void));
	128
c5aa993b	129	extern int run_stack_dummy PARAMS ((CORE_ADDR, char *));
c906108c SS	130
	131	extern CORE_ADDR read_pc PARAMS ((void));
	132
	133	extern CORE_ADDR read_pc_pid PARAMS ((int));
	134
0f71a2f6 JM	135	extern CORE_ADDR generic_target_read_pc PARAMS ((int));
0f71a2f6 JM	136
c906108c SS	137	extern void write_pc PARAMS ((CORE_ADDR));
	138
	139	extern void write_pc_pid PARAMS ((CORE_ADDR, int));
	140
0f71a2f6 JM	141	extern void generic_target_write_pc PARAMS ((CORE_ADDR, int));
0f71a2f6 JM	142
c906108c SS	143	extern CORE_ADDR read_sp PARAMS ((void));
c906108c SS	144
0f71a2f6 JM	145	extern CORE_ADDR generic_target_read_sp PARAMS ((void));
0f71a2f6 JM	146
c906108c SS	147	extern void write_sp PARAMS ((CORE_ADDR));
c906108c SS	148
0f71a2f6 JM	149	extern void generic_target_write_sp PARAMS ((CORE_ADDR));
0f71a2f6 JM	150
c906108c SS	151	extern CORE_ADDR read_fp PARAMS ((void));
c906108c SS	152
0f71a2f6 JM	153	extern CORE_ADDR generic_target_read_fp PARAMS ((void));
0f71a2f6 JM	154
c906108c SS	155	extern void write_fp PARAMS ((CORE_ADDR));
c906108c SS	156
0f71a2f6 JM	157	extern void generic_target_write_fp PARAMS ((CORE_ADDR));
0f71a2f6 JM	158
4478b372 JB	159	extern CORE_ADDR generic_pointer_to_address (struct type type, char buf);
	160
	161	extern void generic_address_to_pointer (struct type type, char buf,
	162	CORE_ADDR addr);
	163
c906108c SS	164	extern void wait_for_inferior PARAMS ((void));
c906108c SS	165
c2c6d25f	166	extern void fetch_inferior_event PARAMS ((void *));
43ff13b4	167
c906108c SS	168	extern void init_wait_for_inferior PARAMS ((void));
	169
	170	extern void close_exec_file PARAMS ((void));
	171
	172	extern void reopen_exec_file PARAMS ((void));
	173
	174	/* The `resume' routine should only be called in special circumstances.
	175	Normally, use `proceed', which handles a lot of bookkeeping. */
	176
	177	extern void resume PARAMS ((int, enum target_signal));
	178
	179	/* From misc files */
	180
	181	extern void store_inferior_registers PARAMS ((int));
	182
	183	extern void fetch_inferior_registers PARAMS ((int));
	184
	185	extern void solib_create_inferior_hook PARAMS ((void));
	186
	187	extern void child_terminal_info PARAMS ((char *, int));
	188
	189	extern void term_info PARAMS ((char *, int));
	190
	191	extern void terminal_ours_for_output PARAMS ((void));
	192
	193	extern void terminal_inferior PARAMS ((void));
	194
	195	extern void terminal_init_inferior PARAMS ((void));
	196
	197	extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp));
	198
	199	/* From infptrace.c or infttrace.c */
	200
	201	extern int attach PARAMS ((int));
	202
	203	#if !defined(REQUIRE_ATTACH)
	204	#define REQUIRE_ATTACH attach
	205	#endif
	206
	207	#if !defined(REQUIRE_DETACH)
	208	#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
	209	#endif
	210
	211	extern void detach PARAMS ((int));
	212
7a292a7a	213	/* PTRACE method of waiting for inferior process. */
c906108c SS	214	int ptrace_wait PARAMS ((int, int *));
	215
	216	extern void child_resume PARAMS ((int, int, enum target_signal));
	217
	218	#ifndef PTRACE_ARG3_TYPE
	219	#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
	220	#endif
	221
	222	extern int call_ptrace PARAMS ((int, int, PTRACE_ARG3_TYPE, int));
	223
	224	extern void pre_fork_inferior PARAMS ((void));
	225
	226	/* From procfs.c */
	227
	228	extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR)));
	229
	230	extern int procfs_first_available PARAMS ((void));
	231
c906108c SS	232	/* From fork-child.c */
	233
	234	extern void fork_inferior PARAMS ((char , char , char **,
	235	void (*)(void),
	236	void (*)(int),
	237	void (*)(void),
	238	char *));
	239
	240
	241	extern void
	242	clone_and_follow_inferior PARAMS ((int, int *));
	243
	244	extern void startup_inferior PARAMS ((int));
	245
	246	/* From inflow.c */
	247
	248	extern void new_tty_prefork PARAMS ((char *));
	249
	250	extern int gdb_has_a_terminal PARAMS ((void));
	251
	252	/* From infrun.c */
	253
	254	extern void start_remote PARAMS ((void));
	255
	256	extern void normal_stop PARAMS ((void));
	257
	258	extern int signal_stop_state PARAMS ((int));
	259
	260	extern int signal_print_state PARAMS ((int));
	261
	262	extern int signal_pass_state PARAMS ((int));
	263
d4f3574e SS	264	extern int signal_stop_update PARAMS ((int, int));
	265
	266	extern int signal_print_update PARAMS ((int, int));
	267
	268	extern int signal_pass_update PARAMS ((int, int));
	269
c906108c SS	270	/* From infcmd.c */
	271
	272	extern void tty_command PARAMS ((char *, int));
	273
	274	extern void attach_command PARAMS ((char *, int));
	275
	276	/* Last signal that the inferior received (why it stopped). */
	277
	278	extern enum target_signal stop_signal;
	279
	280	/* Address at which inferior stopped. */
	281
	282	extern CORE_ADDR stop_pc;
	283
	284	/* Chain containing status of breakpoint(s) that we have stopped at. */
	285
	286	extern bpstat stop_bpstat;
	287
	288	/* Flag indicating that a command has proceeded the inferior past the
	289	current breakpoint. */
	290
	291	extern int breakpoint_proceeded;
	292
	293	/* Nonzero if stopped due to a step command. */
	294
	295	extern int stop_step;
	296
	297	/* Nonzero if stopped due to completion of a stack dummy routine. */
	298
	299	extern int stop_stack_dummy;
	300
	301	/* Nonzero if program stopped due to a random (unexpected) signal in
	302	inferior process. */
	303
	304	extern int stopped_by_random_signal;
	305
	306	/* Range to single step within.
	307	If this is nonzero, respond to a single-step signal
	308	by continuing to step if the pc is in this range.
	309
	310	If step_range_start and step_range_end are both 1, it means to step for
	311	a single instruction (FIXME: it might clean up wait_for_inferior in a
	312	minor way if this were changed to the address of the instruction and
	313	that address plus one. But maybe not.). */
	314
	315	extern CORE_ADDR step_range_start; /* Inclusive */
c5aa993b	316	extern CORE_ADDR step_range_end; /* Exclusive */
c906108c SS	317
	318	/* Stack frame address as of when stepping command was issued.
	319	This is how we know when we step into a subroutine call,
	320	and how to set the frame for the breakpoint used to step out. */
	321
	322	extern CORE_ADDR step_frame_address;
	323
	324	/* Our notion of the current stack pointer. */
	325
	326	extern CORE_ADDR step_sp;
	327
	328	/* 1 means step over all subroutine calls.
	329	-1 means step over calls to undebuggable functions. */
	330
	331	extern int step_over_calls;
	332
	333	/* If stepping, nonzero means step count is > 1
	334	so don't print frame next time inferior stops
	335	if it stops due to stepping. */
	336
	337	extern int step_multi;
	338
	339	/* Nonzero means expecting a trap and caller will handle it themselves.
	340	It is used after attach, due to attaching to a process;
	341	when running in the shell before the child program has been exec'd;
	342	and when running some kinds of remote stuff (FIXME?). */
	343
	344	extern int stop_soon_quietly;
	345
	346	/* Nonzero if proceed is being used for a "finish" command or a similar
	347	situation when stop_registers should be saved. */
	348
	349	extern int proceed_to_finish;
	350
	351	/* Save register contents here when about to pop a stack dummy frame,
	352	if-and-only-if proceed_to_finish is set.
	353	Thus this contains the return value from the called function (assuming
	354	values are returned in a register). */
	355
7a292a7a	356	extern char *stop_registers;
c906108c SS	357
	358	/* Nonzero if the child process in inferior_pid was attached rather
	359	than forked. */
	360
	361	extern int attach_flag;
	362	\f
	363	/* Sigtramp is a routine that the kernel calls (which then calls the
	364	signal handler). On most machines it is a library routine that
	365	is linked into the executable.
	366
	367	This macro, given a program counter value and the name of the
	368	function in which that PC resides (which can be null if the
	369	name is not known), returns nonzero if the PC and name show
	370	that we are in sigtramp.
	371
	372	On most machines just see if the name is sigtramp (and if we have
	373	no name, assume we are not in sigtramp). */
	374	#if !defined (IN_SIGTRAMP)
	375	#if defined (SIGTRAMP_START)
	376	#define IN_SIGTRAMP(pc, name) \
	377	((pc) >= SIGTRAMP_START(pc) \
	378	&& (pc) < SIGTRAMP_END(pc) \
	379	)
	380	#else
	381	#define IN_SIGTRAMP(pc, name) \
	382	(name && STREQ ("_sigtramp", name))
	383	#endif
	384	#endif
	385	\f
	386	/* Possible values for CALL_DUMMY_LOCATION. */
	387	#define ON_STACK 1
	388	#define BEFORE_TEXT_END 2
	389	#define AFTER_TEXT_END 3
	390	#define AT_ENTRY_POINT 4
	391
7a292a7a SS	392	#if !defined (USE_GENERIC_DUMMY_FRAMES)
	393	#define USE_GENERIC_DUMMY_FRAMES 0
	394	#endif
	395
c906108c SS	396	#if !defined (CALL_DUMMY_LOCATION)
	397	#define CALL_DUMMY_LOCATION ON_STACK
	398	#endif /* No CALL_DUMMY_LOCATION. */
	399
7a292a7a	400	#if !defined (CALL_DUMMY_ADDRESS)
11cf8741	401	#define CALL_DUMMY_ADDRESS() (internal_error ("CALL_DUMMY_ADDRESS"), 0)
7a292a7a SS	402	#endif
7a292a7a SS	403	#if !defined (CALL_DUMMY_START_OFFSET)
11cf8741	404	#define CALL_DUMMY_START_OFFSET (internal_error ("CALL_DUMMY_START_OFFSET"), 0)
7a292a7a SS	405	#endif
	406	#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
	407	#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
11cf8741	408	#define CALL_DUMMY_BREAKPOINT_OFFSET (internal_error ("CALL_DUMMY_BREAKPOINT_OFFSET"), 0)
7a292a7a SS	409	#endif
	410	#if !defined CALL_DUMMY_BREAKPOINT_OFFSET_P
	411	#define CALL_DUMMY_BREAKPOINT_OFFSET_P (1)
	412	#endif
	413	#if !defined (CALL_DUMMY_LENGTH)
11cf8741	414	#define CALL_DUMMY_LENGTH (internal_error ("CALL_DUMMY_LENGTH"), 0)
7a292a7a SS	415	#endif
	416
	417	#if defined (CALL_DUMMY_STACK_ADJUST)
	418	#if !defined (CALL_DUMMY_STACK_ADJUST_P)
	419	#define CALL_DUMMY_STACK_ADJUST_P (1)
	420	#endif
	421	#endif
	422	#if !defined (CALL_DUMMY_STACK_ADJUST)
11cf8741	423	#define CALL_DUMMY_STACK_ADJUST (internal_error ("CALL_DUMMY_STACK_ADJUST"), 0)
7a292a7a SS	424	#endif
	425	#if !defined (CALL_DUMMY_STACK_ADJUST_P)
	426	#define CALL_DUMMY_STACK_ADJUST_P (0)
	427	#endif
	428
ba886e9d AC	429	/* FIXME: cagney/2000-04-17: gdbarch should manage this. The default
	430	shouldn't be necessary. */
	431
7a292a7a SS	432	#if !defined (CALL_DUMMY_P)
	433	#if defined (CALL_DUMMY)
	434	#define CALL_DUMMY_P 1
	435	#else
	436	#define CALL_DUMMY_P 0
	437	#endif
	438	#endif
	439
7a292a7a	440	#if !defined PUSH_DUMMY_FRAME
11cf8741	441	#define PUSH_DUMMY_FRAME (internal_error ("PUSH_DUMMY_FRAME"), 0)
7a292a7a SS	442	#endif
	443
	444	#if !defined FIX_CALL_DUMMY
11cf8741	445	#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error ("FIX_CALL_DUMMY"), 0)
7a292a7a SS	446	#endif
	447
	448	#if !defined STORE_STRUCT_RETURN
11cf8741	449	#define STORE_STRUCT_RETURN(a1,a2) (internal_error ("STORE_STRUCT_RETURN"), 0)
7a292a7a SS	450	#endif
	451
	452
	453	/* Are we in a call dummy? */
	454
	455	extern int pc_in_call_dummy_before_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
0f71a2f6	456	#if !GDB_MULTI_ARCH
7a292a7a SS	457	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == BEFORE_TEXT_END
7a292a7a SS	458	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_before_text_end (pc, sp, frame_address)
c906108c	459	#endif /* Before text_end. */
0f71a2f6	460	#endif
c906108c	461
7a292a7a	462	extern int pc_in_call_dummy_after_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
0f71a2f6	463	#if !GDB_MULTI_ARCH
7a292a7a	464	#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AFTER_TEXT_END
c5aa993b	465	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_after_text_end (pc, sp, frame_address)
7a292a7a	466	#endif
0f71a2f6	467	#endif
7a292a7a SS	468
7a292a7a SS	469	extern int pc_in_call_dummy_on_stack 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 == ON_STACK
	472	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_on_stack (pc, sp, frame_address)
	473	#endif
0f71a2f6	474	#endif
7a292a7a SS	475
7a292a7a SS	476	extern int pc_in_call_dummy_at_entry_point 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 == AT_ENTRY_POINT
	479	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_at_entry_point (pc, sp, frame_address)
	480	#endif
0f71a2f6	481	#endif
c906108c SS	482
	483	/* It's often not enough for our clients to know whether the PC is merely
	484	somewhere within the call dummy. They may need to know whether the
	485	call dummy has actually completed. (For example, wait_for_inferior
	486	wants to know when it should truly stop because the call dummy has
	487	completed. If we're single-stepping because of slow watchpoints,
	488	then we may find ourselves stopped at the entry of the call dummy,
	489	and want to continue stepping until we reach the end.)
	490
	491	Note that this macro is intended for targets (like HP-UX) which
	492	require more than a single breakpoint in their call dummies, and
	493	therefore cannot use the CALL_DUMMY_BREAKPOINT_OFFSET mechanism.
	494
	495	If a target does define CALL_DUMMY_BREAKPOINT_OFFSET, then this
	496	default implementation of CALL_DUMMY_HAS_COMPLETED is sufficient.
	497	Else, a target may wish to supply an implementation that works in
	498	the presense of multiple breakpoints in its call dummy.
c5aa993b	499	*/
c906108c SS	500	#if !defined(CALL_DUMMY_HAS_COMPLETED)
	501	#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
	502	PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
	503	#endif
	504
	505	/* If STARTUP_WITH_SHELL is set, GDB's "run"
	506	will attempts to start up the debugee under a shell.
	507	This is in order for argument-expansion to occur. E.g.,
	508	(gdb) run *
	509	The "*" gets expanded by the shell into a list of files.
	510	While this is a nice feature, it turns out to interact badly
	511	with some of the catch-fork/catch-exec features we have added.
	512	In particular, if the shell does any fork/exec's before
	513	the exec of the target program, that can confuse GDB.
	514	To disable this feature, set STARTUP_WITH_SHELL to 0.
	515	To enable this feature, set STARTUP_WITH_SHELL to 1.
	516	The catch-exec traps expected during start-up will
	517	be 1 if target is not started up with a shell, 2 if it is.
	518	- RT
	519	If you disable this, you need to decrement
	520	START_INFERIOR_TRAPS_EXPECTED in tm.h. */
	521	#define STARTUP_WITH_SHELL 1
	522	#if !defined(START_INFERIOR_TRAPS_EXPECTED)
	523	#define START_INFERIOR_TRAPS_EXPECTED 2
	524	#endif
	525	#endif /* !defined (INFERIOR_H) */