mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:54:41 +08:00
346 lines
8.9 KiB
C
346 lines
8.9 KiB
C
/* Variables that describe the inferior process running under GDB:
|
||
Where it is, why it stopped, and how to step it.
|
||
Copyright 1986, 1989, 1992 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#if !defined (INFERIOR_H)
|
||
#define INFERIOR_H 1
|
||
|
||
/* For symtab_and_line */
|
||
#include "symtab.h"
|
||
|
||
/* For bpstat. */
|
||
#include "breakpoint.h"
|
||
|
||
/* For FRAME_ADDR. */
|
||
#include "frame.h"
|
||
|
||
/*
|
||
* Structure in which to save the status of the inferior. 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 {
|
||
int pc_changed;
|
||
int stop_signal;
|
||
int stop_pc;
|
||
FRAME_ADDR stop_frame_address;
|
||
bpstat stop_bpstat;
|
||
int stop_step;
|
||
int stop_stack_dummy;
|
||
int stopped_by_random_signal;
|
||
int trap_expected;
|
||
CORE_ADDR step_range_start;
|
||
CORE_ADDR step_range_end;
|
||
FRAME_ADDR step_frame_address;
|
||
int step_over_calls;
|
||
CORE_ADDR step_resume_break_address;
|
||
int stop_after_trap;
|
||
int stop_soon_quietly;
|
||
FRAME_ADDR selected_frame_address;
|
||
int selected_level;
|
||
char stop_registers[REGISTER_BYTES];
|
||
int breakpoint_proceeded;
|
||
int restore_stack_info;
|
||
int proceed_to_finish;
|
||
};
|
||
|
||
extern void
|
||
save_inferior_status PARAMS ((struct inferior_status *, int));
|
||
|
||
extern void
|
||
restore_inferior_status PARAMS ((struct inferior_status *));
|
||
|
||
/* 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;
|
||
|
||
/* Character array containing an image of the inferior programs' registers. */
|
||
|
||
extern char registers[];
|
||
|
||
/* Array of validity bits (one per register). Nonzero at position XXX_REGNUM
|
||
means that `registers' contains a valid copy of inferior register XXX. */
|
||
|
||
extern char register_valid[NUM_REGS];
|
||
|
||
extern void
|
||
clear_proceed_status PARAMS ((void));
|
||
|
||
extern void
|
||
proceed PARAMS ((CORE_ADDR, int, int));
|
||
|
||
extern void
|
||
kill_inferior PARAMS ((void));
|
||
|
||
extern void
|
||
generic_mourn_inferior PARAMS ((void));
|
||
|
||
extern void
|
||
terminal_ours PARAMS ((void));
|
||
|
||
extern void
|
||
run_stack_dummy PARAMS ((CORE_ADDR, char [REGISTER_BYTES]));
|
||
|
||
extern CORE_ADDR
|
||
read_pc PARAMS ((void));
|
||
|
||
extern void
|
||
write_pc 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, int));
|
||
|
||
/* 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));
|
||
|
||
/* From infptrace.c */
|
||
|
||
extern int
|
||
attach PARAMS ((int));
|
||
|
||
void
|
||
detach PARAMS ((int));
|
||
|
||
extern void
|
||
child_resume PARAMS ((int, int));
|
||
|
||
#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));
|
||
|
||
/* From procfs.c */
|
||
|
||
extern int
|
||
proc_iterate_over_mappings PARAMS ((int (*) (int, CORE_ADDR)));
|
||
|
||
/* From fork-child.c */
|
||
|
||
extern void
|
||
fork_inferior PARAMS ((char *, char *, char **,
|
||
void (*) (void),
|
||
void (*) (int)));
|
||
|
||
/* From inflow.c */
|
||
|
||
extern void
|
||
new_tty_prefork PARAMS ((char *));
|
||
|
||
/* 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 int stop_signal;
|
||
|
||
/* Address at which inferior stopped. */
|
||
|
||
extern CORE_ADDR stop_pc;
|
||
|
||
/* Stack frame when program stopped. */
|
||
|
||
extern FRAME_ADDR stop_frame_address;
|
||
|
||
/* 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. */
|
||
|
||
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 FRAME_ADDR step_frame_address;
|
||
|
||
/* 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[REGISTER_BYTES];
|
||
|
||
/* Nonzero if pc has been changed by the debugger
|
||
since the inferior stopped. */
|
||
|
||
extern int pc_changed;
|
||
|
||
/* Nonzero if the child process in inferior_pid was attached rather
|
||
than forked. */
|
||
|
||
extern int attach_flag;
|
||
|
||
/* Possible values for CALL_DUMMY_LOCATION. */
|
||
#define ON_STACK 1
|
||
#define BEFORE_TEXT_END 2
|
||
#define AFTER_TEXT_END 3
|
||
|
||
#if !defined (CALL_DUMMY_LOCATION)
|
||
#define CALL_DUMMY_LOCATION ON_STACK
|
||
#endif /* No CALL_DUMMY_LOCATION. */
|
||
|
||
/* Are we in a call dummy? The code below which allows DECR_PC_AFTER_BREAK
|
||
below is for infrun.c, which may give the macro a pc without that
|
||
subtracted out. */
|
||
#if !defined (PC_IN_CALL_DUMMY)
|
||
#if CALL_DUMMY_LOCATION == BEFORE_TEXT_END
|
||
extern CORE_ADDR text_end;
|
||
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
|
||
((pc) >= text_end - CALL_DUMMY_LENGTH \
|
||
&& (pc) <= text_end + DECR_PC_AFTER_BREAK)
|
||
#else /* Not before text_end. */
|
||
#if CALL_DUMMY_LOCATION == AFTER_TEXT_END
|
||
extern CORE_ADDR text_end;
|
||
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
|
||
((pc) >= text_end \
|
||
&& (pc) <= text_end + CALL_DUMMY_LENGTH + DECR_PC_AFTER_BREAK)
|
||
#else /* On stack. */
|
||
|
||
/* This assumes that frame_address is the value of SP_REGNUM before
|
||
the dummy frame was pushed. The only known machine for which this
|
||
isn't true is the 29k, which doesn't use ON_STACK. Machines for
|
||
which it isn't true who want to put stack dummies on the stack
|
||
could provide their own PC_IN_CALL_DUMMY, or perhaps this macro
|
||
could be re-written to check for the end of the stack instead
|
||
(using the target_ops->sections). Are there user programs, libraries,
|
||
kernel routines, etc. which also execute on the stack? If so, the
|
||
latter would be a bad idea. */
|
||
|
||
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
|
||
((sp) INNER_THAN (pc) && (frame_address != 0) && (pc) INNER_THAN (frame_address))
|
||
#endif /* On stack. */
|
||
#endif /* Not before text_end. */
|
||
#endif /* No PC_IN_CALL_DUMMY. */
|
||
|
||
#endif /* !defined (INFERIOR_H) */
|