552c04a742
* gdbarch.c, gdbarch.h: Rebuilt. * gdbarch.sh: Added `construct_inferior_arguments'. * cli/cli-decode.h (cmd_list_element): Added pre_show_hook. Typo fix. * cli/cli-setshow.c (do_setshow_command): Call the pre_show_hook. * infcmd.c (_initialize_infcmd): Set sfunc on `set args' command. (inferior_argc, inferior_argv): New globals. (notice_args_set): New function. (set_inferior_args): Clear inferior_argc and inferior_argv. (set_inferior_args_vector): New function. (get_inferior_args): Handle inferior argument vector. (run_command): Use get_inferior_args(). (notice_args_read): New function. (_initialize_infcmd): Don't call set_inferior_args. * command.h: Typo fix. (cmd_list_element): Added pre_show_hook. * main.c (captured_main): Added --args option. (print_gdb_help): Document --args. * inferior.h (construct_inferior_arguments): Declare. (set_inferior_args_vector): Likewise. * fork-child.c (construct_inferior_arguments): New function.
575 lines
17 KiB
C
575 lines
17 KiB
C
/* Variables that describe the inferior process running under GDB:
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Where it is, why it stopped, and how to step it.
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Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
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1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#if !defined (INFERIOR_H)
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#define INFERIOR_H 1
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/* For bpstat. */
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#include "breakpoint.h"
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/* For enum target_signal. */
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#include "target.h"
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/* Structure in which to save the status of the inferior. Create/Save
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through "save_inferior_status", restore through
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"restore_inferior_status".
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This pair of routines should be called around any transfer of
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control to the inferior which you don't want showing up in your
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control variables. */
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struct inferior_status;
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extern struct inferior_status *save_inferior_status (int);
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extern void restore_inferior_status (struct inferior_status *);
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extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
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extern void discard_inferior_status (struct inferior_status *);
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extern void write_inferior_status_register (struct inferior_status
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*inf_status, int regno,
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LONGEST val);
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/* The -1 ptid, often used to indicate either an error condition
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or a "don't care" condition, i.e, "run all threads." */
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extern ptid_t minus_one_ptid;
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/* The null or zero ptid, often used to indicate no process. */
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extern ptid_t null_ptid;
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/* Attempt to find and return an existing ptid with the given PID, LWP,
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and TID components. If none exists, create a new one and return
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that. */
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ptid_t ptid_build (int pid, long lwp, long tid);
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/* Find/Create a ptid from just a pid. */
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ptid_t pid_to_ptid (int pid);
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/* Fetch the pid (process id) component from a ptid. */
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int ptid_get_pid (ptid_t ptid);
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/* Fetch the lwp (lightweight process) component from a ptid. */
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long ptid_get_lwp (ptid_t ptid);
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/* Fetch the tid (thread id) component from a ptid. */
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long ptid_get_tid (ptid_t ptid);
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/* Compare two ptids to see if they are equal */
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extern int ptid_equal (ptid_t p1, ptid_t p2);
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/* Save value of inferior_ptid so that it may be restored by
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a later call to do_cleanups(). Returns the struct cleanup
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pointer needed for later doing the cleanup. */
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extern struct cleanup * save_inferior_ptid (void);
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extern void set_sigint_trap (void);
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extern void clear_sigint_trap (void);
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extern void set_sigio_trap (void);
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extern void clear_sigio_trap (void);
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/* File name for default use for standard in/out in the inferior. */
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extern char *inferior_io_terminal;
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/* Collected pid, tid, etc. of the debugged inferior. When there's
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no inferior, PIDGET (inferior_ptid) will be 0. */
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extern ptid_t inferior_ptid;
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/* Is the inferior running right now, as a result of a 'run&',
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'continue&' etc command? This is used in asycn gdb to determine
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whether a command that the user enters while the target is running
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is allowed or not. */
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extern int target_executing;
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/* Are we simulating synchronous execution? This is used in async gdb
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to implement the 'run', 'continue' etc commands, which will not
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redisplay the prompt until the execution is actually over. */
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extern int sync_execution;
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/* This is only valid when inferior_ptid is non-zero.
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If this is 0, then exec events should be noticed and responded to
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by the debugger (i.e., be reported to the user).
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If this is > 0, then that many subsequent exec events should be
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ignored (i.e., not be reported to the user).
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*/
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extern int inferior_ignoring_startup_exec_events;
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/* This is only valid when inferior_ignoring_startup_exec_events is
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zero.
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Some targets (stupidly) report more than one exec event per actual
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call to an event() system call. If only the last such exec event
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need actually be noticed and responded to by the debugger (i.e.,
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be reported to the user), then this is the number of "leading"
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exec events which should be ignored.
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*/
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extern int inferior_ignoring_leading_exec_events;
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/* Inferior environment. */
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extern struct environ *inferior_environ;
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extern void clear_proceed_status (void);
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extern void proceed (CORE_ADDR, enum target_signal, int);
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/* When set, stop the 'step' command if we enter a function which has
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no line number information. The normal behavior is that we step
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over such function. */
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extern int step_stop_if_no_debug;
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extern void kill_inferior (void);
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extern void generic_mourn_inferior (void);
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extern void terminal_ours (void);
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extern int run_stack_dummy (CORE_ADDR, char *);
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extern CORE_ADDR read_pc (void);
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extern CORE_ADDR read_pc_pid (ptid_t);
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extern CORE_ADDR generic_target_read_pc (ptid_t);
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extern void write_pc (CORE_ADDR);
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extern void write_pc_pid (CORE_ADDR, ptid_t);
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extern void generic_target_write_pc (CORE_ADDR, ptid_t);
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extern CORE_ADDR read_sp (void);
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extern CORE_ADDR generic_target_read_sp (void);
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extern void write_sp (CORE_ADDR);
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extern void generic_target_write_sp (CORE_ADDR);
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extern CORE_ADDR read_fp (void);
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extern CORE_ADDR generic_target_read_fp (void);
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extern void write_fp (CORE_ADDR);
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extern void generic_target_write_fp (CORE_ADDR);
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extern CORE_ADDR unsigned_pointer_to_address (struct type *type, void *buf);
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extern void unsigned_address_to_pointer (struct type *type, void *buf,
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CORE_ADDR addr);
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extern CORE_ADDR signed_pointer_to_address (struct type *type, void *buf);
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extern void address_to_signed_pointer (struct type *type, void *buf,
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CORE_ADDR addr);
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extern void wait_for_inferior (void);
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extern void fetch_inferior_event (void *);
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extern void init_wait_for_inferior (void);
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extern void close_exec_file (void);
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extern void reopen_exec_file (void);
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/* The `resume' routine should only be called in special circumstances.
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Normally, use `proceed', which handles a lot of bookkeeping. */
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extern void resume (int, enum target_signal);
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/* From misc files */
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extern void do_registers_info (int, int);
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extern void store_inferior_registers (int);
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extern void fetch_inferior_registers (int);
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extern void solib_create_inferior_hook (void);
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extern void child_terminal_info (char *, int);
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extern void term_info (char *, int);
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extern void terminal_ours_for_output (void);
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extern void terminal_inferior (void);
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extern void terminal_init_inferior (void);
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extern void terminal_init_inferior_with_pgrp (int pgrp);
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/* From infptrace.c or infttrace.c */
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extern int attach (int);
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#if !defined(REQUIRE_ATTACH)
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#define REQUIRE_ATTACH attach
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#endif
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#if !defined(REQUIRE_DETACH)
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#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
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#endif
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extern void detach (int);
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/* PTRACE method of waiting for inferior process. */
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int ptrace_wait (ptid_t, int *);
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extern void child_resume (ptid_t, int, enum target_signal);
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#ifndef PTRACE_ARG3_TYPE
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#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
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#endif
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extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int);
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extern void pre_fork_inferior (void);
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/* From procfs.c */
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extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
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extern ptid_t procfs_first_available (void);
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/* From fork-child.c */
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extern void fork_inferior (char *, char *, char **,
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void (*)(void),
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void (*)(int), void (*)(void), char *);
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extern void clone_and_follow_inferior (int, int *);
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extern void startup_inferior (int);
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extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
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/* From inflow.c */
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extern void new_tty_prefork (char *);
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extern int gdb_has_a_terminal (void);
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/* From infrun.c */
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extern void start_remote (void);
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extern void normal_stop (void);
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extern int signal_stop_state (int);
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extern int signal_print_state (int);
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extern int signal_pass_state (int);
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extern int signal_stop_update (int, int);
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extern int signal_print_update (int, int);
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extern int signal_pass_update (int, int);
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extern void get_last_target_status(ptid_t *ptid,
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struct target_waitstatus *status);
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/* From infcmd.c */
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extern void tty_command (char *, int);
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extern void attach_command (char *, int);
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extern char *get_inferior_args (void);
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extern char *set_inferior_args (char *);
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extern void set_inferior_args_vector (int, char **);
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/* Last signal that the inferior received (why it stopped). */
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extern enum target_signal stop_signal;
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/* Address at which inferior stopped. */
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extern CORE_ADDR stop_pc;
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/* Chain containing status of breakpoint(s) that we have stopped at. */
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extern bpstat stop_bpstat;
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/* Flag indicating that a command has proceeded the inferior past the
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current breakpoint. */
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extern int breakpoint_proceeded;
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/* Nonzero if stopped due to a step command. */
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extern int stop_step;
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/* Nonzero if stopped due to completion of a stack dummy routine. */
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extern int stop_stack_dummy;
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/* Nonzero if program stopped due to a random (unexpected) signal in
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inferior process. */
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extern int stopped_by_random_signal;
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/* Range to single step within.
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If this is nonzero, respond to a single-step signal
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by continuing to step if the pc is in this range.
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If step_range_start and step_range_end are both 1, it means to step for
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a single instruction (FIXME: it might clean up wait_for_inferior in a
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minor way if this were changed to the address of the instruction and
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that address plus one. But maybe not.). */
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extern CORE_ADDR step_range_start; /* Inclusive */
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extern CORE_ADDR step_range_end; /* Exclusive */
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/* Stack frame address as of when stepping command was issued.
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This is how we know when we step into a subroutine call,
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and how to set the frame for the breakpoint used to step out. */
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extern CORE_ADDR step_frame_address;
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/* Our notion of the current stack pointer. */
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extern CORE_ADDR step_sp;
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/* 1 means step over all subroutine calls.
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-1 means step over calls to undebuggable functions. */
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enum step_over_calls_kind
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{
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STEP_OVER_NONE,
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STEP_OVER_ALL,
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STEP_OVER_UNDEBUGGABLE
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};
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extern enum step_over_calls_kind step_over_calls;
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/* If stepping, nonzero means step count is > 1
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so don't print frame next time inferior stops
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if it stops due to stepping. */
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extern int step_multi;
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/* Nonzero means expecting a trap and caller will handle it themselves.
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It is used after attach, due to attaching to a process;
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when running in the shell before the child program has been exec'd;
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and when running some kinds of remote stuff (FIXME?). */
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extern int stop_soon_quietly;
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/* Nonzero if proceed is being used for a "finish" command or a similar
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situation when stop_registers should be saved. */
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extern int proceed_to_finish;
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/* Save register contents here when about to pop a stack dummy frame,
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if-and-only-if proceed_to_finish is set.
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Thus this contains the return value from the called function (assuming
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values are returned in a register). */
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extern char *stop_registers;
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/* Nonzero if the child process in inferior_ptid was attached rather
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than forked. */
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extern int attach_flag;
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/* Sigtramp is a routine that the kernel calls (which then calls the
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signal handler). On most machines it is a library routine that
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is linked into the executable.
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This macro, given a program counter value and the name of the
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function in which that PC resides (which can be null if the
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name is not known), returns nonzero if the PC and name show
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that we are in sigtramp.
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On most machines just see if the name is sigtramp (and if we have
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no name, assume we are not in sigtramp). */
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#if !defined (IN_SIGTRAMP)
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#if defined (SIGTRAMP_START)
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#define IN_SIGTRAMP(pc, name) \
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((pc) >= SIGTRAMP_START(pc) \
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&& (pc) < SIGTRAMP_END(pc) \
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)
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#else
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#define IN_SIGTRAMP(pc, name) \
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(name && STREQ ("_sigtramp", name))
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#endif
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#endif
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/* Possible values for CALL_DUMMY_LOCATION. */
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#define ON_STACK 1
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#define BEFORE_TEXT_END 2
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#define AFTER_TEXT_END 3
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#define AT_ENTRY_POINT 4
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#if !defined (USE_GENERIC_DUMMY_FRAMES)
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#define USE_GENERIC_DUMMY_FRAMES 0
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#endif
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#if !defined (CALL_DUMMY_LOCATION)
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#define CALL_DUMMY_LOCATION ON_STACK
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#endif /* No CALL_DUMMY_LOCATION. */
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#if !defined (CALL_DUMMY_ADDRESS)
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#define CALL_DUMMY_ADDRESS() (internal_error (__FILE__, __LINE__, "CALL_DUMMY_ADDRESS"), 0)
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#endif
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#if !defined (CALL_DUMMY_START_OFFSET)
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#define CALL_DUMMY_START_OFFSET (internal_error (__FILE__, __LINE__, "CALL_DUMMY_START_OFFSET"), 0)
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#endif
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#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
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#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
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#define CALL_DUMMY_BREAKPOINT_OFFSET (internal_error (__FILE__, __LINE__, "CALL_DUMMY_BREAKPOINT_OFFSET"), 0)
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#endif
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#if !defined CALL_DUMMY_BREAKPOINT_OFFSET_P
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#define CALL_DUMMY_BREAKPOINT_OFFSET_P (1)
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#endif
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#if !defined (CALL_DUMMY_LENGTH)
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#define CALL_DUMMY_LENGTH (internal_error (__FILE__, __LINE__, "CALL_DUMMY_LENGTH"), 0)
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#endif
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#if defined (CALL_DUMMY_STACK_ADJUST)
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#if !defined (CALL_DUMMY_STACK_ADJUST_P)
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#define CALL_DUMMY_STACK_ADJUST_P (1)
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#endif
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#endif
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#if !defined (CALL_DUMMY_STACK_ADJUST)
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#define CALL_DUMMY_STACK_ADJUST (internal_error (__FILE__, __LINE__, "CALL_DUMMY_STACK_ADJUST"), 0)
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#endif
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#if !defined (CALL_DUMMY_STACK_ADJUST_P)
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#define CALL_DUMMY_STACK_ADJUST_P (0)
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#endif
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/* FIXME: cagney/2000-04-17: gdbarch should manage this. The default
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shouldn't be necessary. */
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#if !defined (CALL_DUMMY_P)
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#if defined (CALL_DUMMY)
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#define CALL_DUMMY_P 1
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#else
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#define CALL_DUMMY_P 0
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#endif
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#endif
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#if !defined PUSH_DUMMY_FRAME
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#define PUSH_DUMMY_FRAME (internal_error (__FILE__, __LINE__, "PUSH_DUMMY_FRAME"), 0)
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#endif
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#if !defined FIX_CALL_DUMMY
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#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error (__FILE__, __LINE__, "FIX_CALL_DUMMY"), 0)
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#endif
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#if !defined STORE_STRUCT_RETURN
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#define STORE_STRUCT_RETURN(a1,a2) (internal_error (__FILE__, __LINE__, "STORE_STRUCT_RETURN"), 0)
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#endif
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/* Are we in a call dummy? */
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extern int pc_in_call_dummy_before_text_end (CORE_ADDR pc, CORE_ADDR sp,
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CORE_ADDR frame_address);
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#if !GDB_MULTI_ARCH
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#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == BEFORE_TEXT_END
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#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_before_text_end (pc, sp, frame_address)
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#endif /* Before text_end. */
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#endif
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extern int pc_in_call_dummy_after_text_end (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 (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 (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) */
|