/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright (C) 1986-2015 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (INFERIOR_H)
#define INFERIOR_H 1
+struct target_waitstatus;
+struct frame_info;
+struct ui_file;
+struct type;
struct gdbarch;
struct regcache;
+struct ui_out;
+struct terminal_info;
+struct target_desc_info;
/* For bpstat. */
#include "breakpoint.h"
-/* For enum target_signal. */
+/* For enum gdb_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 (int);
-
-extern void restore_inferior_status (struct inferior_status *);
-
-extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
+/* For struct frame_id. */
+#include "frame.h"
-extern void discard_inferior_status (struct inferior_status *);
+#include "progspace.h"
+#include "registry.h"
-extern void write_inferior_status_register (struct inferior_status
- *inf_status, int regno,
- LONGEST val);
+struct infcall_suspend_state;
+struct infcall_control_state;
-/* The -1 ptid, often used to indicate either an error condition
- or a "don't care" condition, i.e, "run all threads." */
-extern ptid_t minus_one_ptid;
+extern struct infcall_suspend_state *save_infcall_suspend_state (void);
+extern struct infcall_control_state *save_infcall_control_state (void);
-/* The null or zero ptid, often used to indicate no process. */
-extern ptid_t null_ptid;
+extern void restore_infcall_suspend_state (struct infcall_suspend_state *);
+extern void restore_infcall_control_state (struct infcall_control_state *);
-/* Attempt to find and return an existing ptid with the given PID, LWP,
- and TID components. If none exists, create a new one and return
- that. */
-ptid_t ptid_build (int pid, long lwp, long tid);
+extern struct cleanup *make_cleanup_restore_infcall_suspend_state
+ (struct infcall_suspend_state *);
+extern struct cleanup *make_cleanup_restore_infcall_control_state
+ (struct infcall_control_state *);
-/* Find/Create a ptid from just a pid. */
-ptid_t pid_to_ptid (int pid);
+extern void discard_infcall_suspend_state (struct infcall_suspend_state *);
+extern void discard_infcall_control_state (struct infcall_control_state *);
-/* Fetch the pid (process id) component from a ptid. */
-int ptid_get_pid (ptid_t ptid);
-
-/* Fetch the lwp (lightweight process) component from a ptid. */
-long ptid_get_lwp (ptid_t ptid);
-
-/* Fetch the tid (thread id) component from a ptid. */
-long ptid_get_tid (ptid_t ptid);
-
-/* Compare two ptids to see if they are equal */
-extern int ptid_equal (ptid_t p1, ptid_t p2);
+extern struct regcache *
+ get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
/* Save value of inferior_ptid so that it may be restored by
a later call to do_cleanups(). Returns the struct cleanup
extern void clear_sigint_trap (void);
-extern void set_sigio_trap (void);
+/* Set/get file name for default use for standard in/out in the inferior. */
-extern void clear_sigio_trap (void);
-
-/* File name for default use for standard in/out in the inferior. */
-
-extern char *inferior_io_terminal;
+extern void set_inferior_io_terminal (const char *terminal_name);
+extern const char *get_inferior_io_terminal (void);
/* Collected pid, tid, etc. of the debugged inferior. When there's
- no inferior, PIDGET (inferior_ptid) will be 0. */
+ no inferior, ptid_get_pid (inferior_ptid) will be 0. */
extern ptid_t inferior_ptid;
-/* 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_ptid 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;
-
-extern void clear_proceed_status (void);
-
-extern void proceed (CORE_ADDR, enum target_signal, int);
-
-/* When set, stop the 'step' command if we enter a function which has
- no line number information. The normal behavior is that we step
- over such function. */
-extern int step_stop_if_no_debug;
-
-extern void kill_inferior (void);
-
extern void generic_mourn_inferior (void);
-extern void terminal_ours (void);
-
-extern int run_stack_dummy (CORE_ADDR , struct regcache *);
-
-extern CORE_ADDR read_pc (void);
-
-extern CORE_ADDR read_pc_pid (ptid_t);
-
-extern CORE_ADDR generic_target_read_pc (ptid_t);
+extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch,
+ struct type *type,
+ const gdb_byte *buf);
+extern void unsigned_address_to_pointer (struct gdbarch *gdbarch,
+ struct type *type, gdb_byte *buf,
+ CORE_ADDR addr);
+extern CORE_ADDR signed_pointer_to_address (struct gdbarch *gdbarch,
+ struct type *type,
+ const gdb_byte *buf);
+extern void address_to_signed_pointer (struct gdbarch *gdbarch,
+ struct type *type, gdb_byte *buf,
+ CORE_ADDR addr);
-extern void write_pc (CORE_ADDR);
+extern void reopen_exec_file (void);
-extern void write_pc_pid (CORE_ADDR, ptid_t);
+/* From misc files */
-extern void generic_target_write_pc (CORE_ADDR, ptid_t);
+extern void default_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int all);
-extern CORE_ADDR read_sp (void);
+/* Default implementation of gdbarch_print_float_info. Print
+ the values of all floating point registers. */
-extern CORE_ADDR generic_target_read_sp (void);
+extern void default_print_float_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ const char *args);
-extern void write_sp (CORE_ADDR);
+extern void child_terminal_info (struct target_ops *self, const char *, int);
-extern void generic_target_write_sp (CORE_ADDR);
+extern void term_info (char *, int);
-extern CORE_ADDR read_fp (void);
+extern void child_terminal_ours (struct target_ops *self);
-extern CORE_ADDR generic_target_read_fp (void);
+extern void child_terminal_ours_for_output (struct target_ops *self);
-extern CORE_ADDR unsigned_pointer_to_address (struct type *type, void *buf);
+extern void child_terminal_inferior (struct target_ops *self);
-extern void unsigned_address_to_pointer (struct type *type, void *buf,
- CORE_ADDR addr);
-extern CORE_ADDR signed_pointer_to_address (struct type *type, void *buf);
-extern void address_to_signed_pointer (struct type *type, void *buf,
- CORE_ADDR addr);
+extern void child_terminal_init (struct target_ops *self);
-extern void wait_for_inferior (void);
+extern void child_terminal_init_with_pgrp (int pgrp);
-extern void fetch_inferior_event (void *);
+/* From fork-child.c */
-extern void init_wait_for_inferior (void);
+extern int fork_inferior (char *, char *, char **,
+ void (*)(void),
+ void (*)(int), void (*)(void), char *,
+ void (*)(const char *,
+ char * const *, char * const *));
-extern void close_exec_file (void);
-extern void reopen_exec_file (void);
+extern void startup_inferior (int);
-/* The `resume' routine should only be called in special circumstances.
- Normally, use `proceed', which handles a lot of bookkeeping. */
+extern char *construct_inferior_arguments (int, char **);
-extern void resume (int, enum target_signal);
+/* From infcmd.c */
-/* From misc files */
+extern void post_create_inferior (struct target_ops *, int);
-extern void default_print_registers_info (struct gdbarch *gdbarch,
- struct ui_file *file,
- struct frame_info *frame,
- int regnum, int all);
-
-extern void store_inferior_registers (int);
+extern void attach_command (char *, int);
-extern void fetch_inferior_registers (int);
+extern char *get_inferior_args (void);
-extern void solib_create_inferior_hook (void);
+extern void set_inferior_args (char *);
-extern void child_terminal_info (char *, int);
+extern void set_inferior_args_vector (int, char **);
-extern void term_info (char *, int);
+extern void registers_info (char *, int);
-extern void terminal_ours_for_output (void);
+extern void continue_1 (int all_threads);
-extern void terminal_inferior (void);
+extern void interrupt_target_1 (int all_threads);
-extern void terminal_init_inferior (void);
+extern void delete_longjmp_breakpoint_cleanup (void *arg);
-extern void terminal_init_inferior_with_pgrp (int pgrp);
+extern void detach_command (char *, int);
-/* From infptrace.c or infttrace.c */
+extern void notice_new_inferior (ptid_t, int, int);
-extern int attach (int);
+extern struct value *get_return_value (struct value *function,
+ struct type *value_type);
-#if !defined(REQUIRE_ATTACH)
-#define REQUIRE_ATTACH attach
-#endif
+/* Prepare for execution command. TARGET is the target that will run
+ the command. BACKGROUND determines whether this is a foreground
+ (synchronous) or background (asynchronous) command. */
-#if !defined(REQUIRE_DETACH)
-#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
-#endif
+extern void prepare_execution_command (struct target_ops *target,
+ int background);
-extern void detach (int);
+/* Whether to start up the debuggee under a shell.
-/* PTRACE method of waiting for inferior process. */
-int ptrace_wait (ptid_t, int *);
+ If startup-with-shell is set, GDB's "run" will attempt to start up
+ the debuggee under a shell.
-extern void child_resume (ptid_t, int, enum target_signal);
+ This is in order for argument-expansion to occur. E.g.,
-#ifndef PTRACE_ARG3_TYPE
-#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
-#endif
+ (gdb) run *
-extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int);
+ The "*" gets expanded by the shell into a list of files.
-extern void pre_fork_inferior (void);
+ While this is a nice feature, it may be handy to bypass the shell
+ in some cases. To disable this feature, do "set startup-with-shell
+ false".
-/* From procfs.c */
+ The catch-exec traps expected during start-up will be one more if
+ the target is started up with a shell. */
+extern int startup_with_shell;
-extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
+/* Address at which inferior stopped. */
-extern ptid_t procfs_first_available (void);
+extern CORE_ADDR stop_pc;
-/* From fork-child.c */
+/* Nonzero if stopped due to completion of a stack dummy routine. */
-extern void fork_inferior (char *, char *, char **,
- void (*)(void),
- void (*)(int), void (*)(void), char *);
+extern enum stop_stack_kind stop_stack_dummy;
+/* Nonzero if program stopped due to a random (unexpected) signal in
+ inferior process. */
-extern void clone_and_follow_inferior (int, int *);
+extern int stopped_by_random_signal;
-extern void startup_inferior (int);
+/* STEP_OVER_ALL means step over all subroutine calls.
+ STEP_OVER_UNDEBUGGABLE means step over calls to undebuggable functions.
+ STEP_OVER_NONE means don't step over any subroutine calls. */
-extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
+enum step_over_calls_kind
+ {
+ STEP_OVER_NONE,
+ STEP_OVER_ALL,
+ STEP_OVER_UNDEBUGGABLE
+ };
-/* From inflow.c */
+/* Anything but NO_STOP_QUIETLY means we expect a trap and the caller
+ will handle it themselves. STOP_QUIETLY is used when running in
+ the shell before the child program has been exec'd and when running
+ through shared library loading. STOP_QUIETLY_REMOTE is used when
+ setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP
+ except that there is no need to hide a signal. */
+
+/* STOP_QUIETLY_NO_SIGSTOP is used to handle a tricky situation with attach.
+ When doing an attach, the kernel stops the debuggee with a SIGSTOP.
+ On newer GNU/Linux kernels (>= 2.5.61) the handling of SIGSTOP for
+ a ptraced process has changed. Earlier versions of the kernel
+ would ignore these SIGSTOPs, while now SIGSTOP is treated like any
+ other signal, i.e. it is not muffled.
+
+ If the gdb user does a 'continue' after the 'attach', gdb passes
+ the global variable stop_signal (which stores the signal from the
+ attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is
+ problematic, because the kernel doesn't ignore such SIGSTOP
+ now. I.e. it is reported back to gdb, which in turn presents it
+ back to the user.
+
+ To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
+ gdb to clear the value of stop_signal after the attach, so that it
+ is not passed back down to the kernel. */
+
+enum stop_kind
+ {
+ NO_STOP_QUIETLY = 0,
+ STOP_QUIETLY,
+ STOP_QUIETLY_REMOTE,
+ STOP_QUIETLY_NO_SIGSTOP
+ };
-extern void new_tty_prefork (char *);
+\f
+/* Possible values for gdbarch_call_dummy_location. */
+#define ON_STACK 1
+#define AT_ENTRY_POINT 4
-extern int gdb_has_a_terminal (void);
+/* Number of traps that happen between exec'ing the shell to run an
+ inferior and when we finally get to the inferior code, not counting
+ the exec for the shell. This is 1 on all supported
+ implementations. */
+#define START_INFERIOR_TRAPS_EXPECTED 1
+
+struct private_inferior;
+
+/* Inferior process specific part of `struct infcall_control_state'.
+
+ Inferior thread counterpart is `struct thread_control_state'. */
+
+struct inferior_control_state
+{
+ /* See the definition of stop_kind above. */
+ enum stop_kind stop_soon;
+};
+
+/* GDB represents the state of each program execution with an object
+ called an inferior. An inferior typically corresponds to a process
+ but is more general and applies also to targets that do not have a
+ notion of processes. Each run of an executable creates a new
+ inferior, as does each attachment to an existing process.
+ Inferiors have unique internal identifiers that are different from
+ target process ids. Each inferior may in turn have multiple
+ threads running in it. */
+
+struct inferior
+{
+ /* Pointer to next inferior in singly-linked list of inferiors. */
+ struct inferior *next;
+
+ /* Convenient handle (GDB inferior id). Unique across all
+ inferiors. */
+ int num;
+
+ /* Actual target inferior id, usually, a process id. This matches
+ the ptid_t.pid member of threads of this inferior. */
+ int pid;
+ /* True if the PID was actually faked by GDB. */
+ int fake_pid_p;
+
+ /* State of GDB control of inferior process execution.
+ See `struct inferior_control_state'. */
+ struct inferior_control_state control;
+
+ /* True if this was an auto-created inferior, e.g. created from
+ following a fork; false, if this inferior was manually added by
+ the user, and we should not attempt to prune it
+ automatically. */
+ int removable;
+
+ /* The address space bound to this inferior. */
+ struct address_space *aspace;
+
+ /* The program space bound to this inferior. */
+ struct program_space *pspace;
+
+ /* The arguments string to use when running. */
+ char *args;
+
+ /* The size of elements in argv. */
+ int argc;
+
+ /* The vector version of arguments. If ARGC is nonzero,
+ then we must compute ARGS from this (via the target).
+ This is always coming from main's argv and therefore
+ should never be freed. */
+ char **argv;
-/* From infrun.c */
+ /* The name of terminal device to use for I/O. */
+ char *terminal;
-extern void start_remote (void);
+ /* Environment to use for running inferior,
+ in format described in environ.h. */
+ struct gdb_environ *environment;
-extern void normal_stop (void);
+ /* Nonzero if this child process was attached rather than
+ forked. */
+ int attach_flag;
-extern int signal_stop_state (int);
+ /* If this inferior is a vfork child, then this is the pointer to
+ its vfork parent, if GDB is still attached to it. */
+ struct inferior *vfork_parent;
-extern int signal_print_state (int);
+ /* If this process is a vfork parent, this is the pointer to the
+ child. Since a vfork parent is left frozen by the kernel until
+ the child execs or exits, a process can only have one vfork child
+ at a given time. */
+ struct inferior *vfork_child;
-extern int signal_pass_state (int);
+ /* True if this inferior should be detached when it's vfork sibling
+ exits or execs. */
+ int pending_detach;
-extern int signal_stop_update (int, int);
+ /* True if this inferior is a vfork parent waiting for a vfork child
+ not under our control to be done with the shared memory region,
+ either by exiting or execing. */
+ int waiting_for_vfork_done;
-extern int signal_print_update (int, int);
+ /* True if we're in the process of detaching from this inferior. */
+ int detaching;
-extern int signal_pass_update (int, int);
+ /* What is left to do for an execution command after any thread of
+ this inferior stops. For continuations associated with a
+ specific thread, see `struct thread_info'. */
+ struct continuation *continuations;
-extern void get_last_target_status(ptid_t *ptid,
- struct target_waitstatus *status);
+ /* Private data used by the target vector implementation. */
+ struct private_inferior *priv;
-/* From infcmd.c */
+ /* HAS_EXIT_CODE is true if the inferior exited with an exit code.
+ In this case, the EXIT_CODE field is also valid. */
+ int has_exit_code;
+ LONGEST exit_code;
-extern void tty_command (char *, int);
+ /* Default flags to pass to the symbol reading functions. These are
+ used whenever a new objfile is created. The valid values come
+ from enum symfile_add_flags. */
+ int symfile_flags;
-extern void attach_command (char *, int);
+ /* Info about an inferior's target description (if it's fetched; the
+ user supplied description's filename, if any; etc.). */
+ struct target_desc_info *tdesc_info;
-extern char *get_inferior_args (void);
+ /* The architecture associated with the inferior through the
+ connection to the target.
-extern char *set_inferior_args (char *);
+ The architecture vector provides some information that is really
+ a property of the inferior, accessed through a particular target:
+ ptrace operations; the layout of certain RSP packets; the
+ solib_ops vector; etc. To differentiate architecture accesses to
+ per-inferior/target properties from
+ per-thread/per-frame/per-objfile properties, accesses to
+ per-inferior/target properties should be made through
+ this gdbarch. */
+ struct gdbarch *gdbarch;
-extern void set_inferior_args_vector (int, char **);
+ /* Per inferior data-pointers required by other GDB modules. */
+ REGISTRY_FIELDS;
+};
-/* Last signal that the inferior received (why it stopped). */
+/* Keep a registry of per-inferior data-pointers required by other GDB
+ modules. */
-extern enum target_signal stop_signal;
+DECLARE_REGISTRY (inferior);
-/* Address at which inferior stopped. */
+/* Create an empty inferior list, or empty the existing one. */
+extern void init_inferior_list (void);
-extern CORE_ADDR stop_pc;
+/* Add an inferior to the inferior list, print a message that a new
+ inferior is found, and return the pointer to the new inferior.
+ Caller may use this pointer to initialize the private inferior
+ data. */
+extern struct inferior *add_inferior (int pid);
-/* Chain containing status of breakpoint(s) that we have stopped at. */
+/* Same as add_inferior, but don't print new inferior notifications to
+ the CLI. */
+extern struct inferior *add_inferior_silent (int pid);
-extern bpstat stop_bpstat;
+extern void delete_inferior (struct inferior *todel);
-/* Flag indicating that a command has proceeded the inferior past the
- current breakpoint. */
+/* Delete an existing inferior list entry, due to inferior detaching. */
+extern void detach_inferior (int pid);
-extern int breakpoint_proceeded;
+extern void exit_inferior (int pid);
-/* Nonzero if stopped due to a step command. */
+extern void exit_inferior_silent (int pid);
-extern int stop_step;
+extern void exit_inferior_num_silent (int num);
-/* Nonzero if stopped due to completion of a stack dummy routine. */
+extern void inferior_appeared (struct inferior *inf, int pid);
-extern int stop_stack_dummy;
+/* Get rid of all inferiors. */
+extern void discard_all_inferiors (void);
-/* Nonzero if program stopped due to a random (unexpected) signal in
- inferior process. */
+/* Translate the integer inferior id (GDB's homegrown id, not the system's)
+ into a "pid" (which may be overloaded with extra inferior information). */
+extern int gdb_inferior_id_to_pid (int);
-extern int stopped_by_random_signal;
+/* Translate a target 'pid' into the integer inferior id (GDB's
+ homegrown id, not the system's). */
+extern int pid_to_gdb_inferior_id (int pid);
-/* 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.
+/* Boolean test for an already-known pid. */
+extern int in_inferior_list (int pid);
- 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.). */
+/* Boolean test for an already-known inferior id (GDB's homegrown id,
+ not the system's). */
+extern int valid_gdb_inferior_id (int num);
-extern CORE_ADDR step_range_start; /* Inclusive */
-extern CORE_ADDR step_range_end; /* Exclusive */
+/* Search function to lookup an inferior by target 'pid'. */
+extern struct inferior *find_inferior_pid (int pid);
-/* 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. */
+/* Search function to lookup an inferior whose pid is equal to 'ptid.pid'. */
+extern struct inferior *find_inferior_ptid (ptid_t ptid);
-extern CORE_ADDR step_frame_address;
+/* Search function to lookup an inferior by GDB 'num'. */
+extern struct inferior *find_inferior_id (int num);
-/* Our notion of the current stack pointer. */
+/* Find an inferior bound to PSPACE, giving preference to the current
+ inferior. */
+extern struct inferior *
+ find_inferior_for_program_space (struct program_space *pspace);
-extern CORE_ADDR step_sp;
+/* Inferior iterator function.
-/* 1 means step over all subroutine calls.
- -1 means step over calls to undebuggable functions. */
+ Calls a callback function once for each inferior, so long as the
+ callback function returns false. If the callback function returns
+ true, the iteration will end and the current inferior will be
+ returned. This can be useful for implementing a search for a
+ inferior with arbitrary attributes, or for applying some operation
+ to every inferior.
-enum step_over_calls_kind
- {
- STEP_OVER_NONE,
- STEP_OVER_ALL,
- STEP_OVER_UNDEBUGGABLE
- };
+ It is safe to delete the iterated inferior from the callback. */
+extern struct inferior *iterate_over_inferiors (int (*) (struct inferior *,
+ void *),
+ void *);
-extern enum step_over_calls_kind step_over_calls;
+/* Returns true if the inferior list is not empty. */
+extern int have_inferiors (void);
-/* If stepping, nonzero means step count is > 1
- so don't print frame next time inferior stops
- if it stops due to stepping. */
+/* Returns true if there are any live inferiors in the inferior list
+ (not cores, not executables, real live processes). */
+extern int have_live_inferiors (void);
-extern int step_multi;
+/* Return a pointer to the current inferior. It is an error to call
+ this if there is no current inferior. */
+extern struct inferior *current_inferior (void);
-/* 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 void set_current_inferior (struct inferior *);
-extern int stop_soon_quietly;
+extern struct cleanup *save_current_inferior (void);
-/* Nonzero if proceed is being used for a "finish" command or a similar
- situation when stop_registers should be saved. */
+/* Traverse all inferiors. */
-extern int proceed_to_finish;
+#define ALL_INFERIORS(I) \
+ for ((I) = inferior_list; (I); (I) = (I)->next)
-/* 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 struct inferior *inferior_list;
-extern struct regcache *stop_registers;
+/* Prune away automatically added inferiors that aren't required
+ anymore. */
+extern void prune_inferiors (void);
-/* Nonzero if the child process in inferior_ptid was attached rather
- than forked. */
+extern int number_of_inferiors (void);
-extern int attach_flag;
-\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
+extern struct inferior *add_inferior_with_spaces (void);
-#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 (__FILE__, __LINE__, "CALL_DUMMY_ADDRESS"), 0)
-#endif
-#if !defined (CALL_DUMMY_START_OFFSET)
-#define CALL_DUMMY_START_OFFSET (internal_error (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "PUSH_DUMMY_FRAME"), 0)
-#endif
-
-#if !defined FIX_CALL_DUMMY
-#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error (__FILE__, __LINE__, "FIX_CALL_DUMMY"), 0)
-#endif
-
-#if !defined STORE_STRUCT_RETURN
-#define STORE_STRUCT_RETURN(a1,a2) (internal_error (__FILE__, __LINE__, "STORE_STRUCT_RETURN"), 0)
-#endif
-
-
-/* Are we in a call dummy? */
-
-extern int pc_in_call_dummy_before_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 == 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 (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) */
projects / deliverable / binutils-gdb.git / blobdiff