/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright (C) 1986 Free Software Foundation, Inc.
-
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
+ Copyright (C) 1986, 1989 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. */
+
+/* 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;
+};
+
+void save_inferior_status (), restore_inferior_status ();
/* File name for default use for standard in/out in the inferior. */
extern int inferior_pid;
-/* Nonzero if debugging a remote machine via a serial link or ethernet. */
-
-extern int remote_debugging;
-
+/* Character array containing an image of the inferior programs' registers. */
+
+extern char registers[];
+
+extern void clear_proceed_status ();
+extern void start_inferior ();
+extern void proceed ();
+extern void kill_inferior ();
+extern void kill_inferior_fast ();
+extern void generic_mourn_inferior ();
+extern void terminal_ours ();
+extern void detach ();
+extern void run_stack_dummy ();
+extern CORE_ADDR read_pc ();
+extern void write_pc ();
+extern void wait_for_inferior ();
+extern void init_wait_for_inferior ();
+extern void close_exec_file ();
+extern void reopen_exec_file ();
+
+/* From infcmd.c */
+void attach_command (
+#ifdef __STDC__
+ char *arg, int from_tty
+#endif
+ );
+
/* Last signal that the inferior received (why it stopped). */
extern int stop_signal;
/* Stack frame when program stopped. */
-extern FRAME stop_frame;
+extern FRAME_ADDR stop_frame_address;
+
+/* Chain containing status of breakpoint(s) that we have stopped at. */
+
+extern bpstat stop_bpstat;
-/* Number of breakpoint it stopped at, or 0 if none. */
+/* Flag indicating that a command has proceeded the inferior past the
+ current breakpoint. */
-extern int stop_breakpoint;
+extern int breakpoint_proceeded;
/* Nonzero if stopped due to a step command. */
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. */
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;
+extern FRAME_ADDR step_frame_address;
/* 1 means step over all subroutine calls.
-1 means step over calls to undebuggable functions. */
extern int step_multi;
-/* Save register contents here when about to pop a stack dummy frame. */
+/* 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?). */
+
+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];
since the inferior stopped. */
extern int pc_changed;
+
+/* Nonzero if the child process in inferior_pid was attached rather
+ than forked. */
+
+int attach_flag;
+\f
+/* 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
+#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
+#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. */
+#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
+ ((sp) INNER_THAN (pc) && (pc) INNER_THAN (frame_address))
+#endif /* On stack. */
+#endif /* Not before text_end. */
+#endif /* No PC_IN_CALL_DUMMY. */
projects / deliverable / binutils-gdb.git / blobdiff