/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright (C) 1986, 1989 Free Software Foundation, Inc.
+ Copyright 1986, 1989, 1992 Free Software Foundation, Inc.
This file is part of GDB.
-GDB is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+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 GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+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 bpstat. */
+#include "breakpoint.h"
+
+/* For FRAME_ADDR. */
+#include "frame.h"
/*
* Structure in which to save the status of the inferior. Save
int pc_changed;
int stop_signal;
int stop_pc;
- int stop_frame_address;
- int stop_breakpoint;
+ FRAME_ADDR stop_frame_address;
+ bpstat stop_bpstat;
int stop_step;
int stop_stack_dummy;
int stopped_by_random_signal;
int step_over_calls;
CORE_ADDR step_resume_break_address;
int stop_after_trap;
- int stop_after_attach;
+ int stop_soon_quietly;
FRAME_ADDR selected_frame_address;
int selected_level;
- struct command_line *breakpoint_commands;
char stop_registers[REGISTER_BYTES];
+ int breakpoint_proceeded;
int restore_stack_info;
+ int proceed_to_finish;
};
-void save_inferior_status (), restore_inferior_status ();
+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 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[];
+
+/* 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 ((char*, CORE_ADDR, char [REGISTER_BYTES]));
+
+extern CORE_ADDR
+read_pc PARAMS ((void));
+
+extern void
+write_pc PARAMS ((CORE_ADDR));
+
+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, 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));
-/* Routines for use in remote debugging. Documented in remote.c. */
-int remote_read_inferior_memory ();
-int remote_write_inferior_memory ();
+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 *));
+
+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 FRAME_ADDR stop_frame_address;
-/* Number of breakpoint it stopped at, or 0 if none. */
+/* Chain containing status of breakpoint(s) that we have stopped at. */
+
+extern bpstat stop_bpstat;
-extern int stop_breakpoint;
+/* 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 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?). */
+
+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];
extern int pc_changed;
-long read_memory_integer ();
+/* 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) < SIGTRAMP_END \
+ )
+# 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
+
+#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. */
+
+/* Is the PC in a call dummy? SP and FRAME_ADDRESS are the bottom and
+ top of the stack frame which we are checking, where "bottom" and
+ "top" refer to some section of memory which contains the code for
+ the call dummy. Calls to this macro assume that the contents of
+ SP_REGNUM and FP_REGNUM (or the saved values thereof), respectively,
+ are the things to pass.
+
+ This won't work on the 29k, where SP_REGNUM and FP_REGNUM don't
+ have that meaning, but the 29k doesn't use ON_STACK. This could be
+ fixed by generalizing this scheme, perhaps by passing in a frame
+ and adding a few fields, at least on machines which need them for
+ PC_IN_CALL_DUMMY.
+
+ Something simpler, like checking for the stack segment, doesn't work,
+ since various programs (threads implementations, gcc nested function
+ stubs, etc) may either allocate stack frames in another segment, or
+ allocate other kinds of code on the stack. */
+
+#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) */
projects / deliverable / binutils-gdb.git / blobdiff