X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Finferior.h;h=d33a01afaa478cc4ca308bd7792cd1a25381c0b0;hb=2dd4d4224afba558be14b39e2886ba47b2132678;hp=1042a447fea532efe6897399fabcf94ed27aa48a;hpb=e1ac3328737bc34a23dbfff92b416a9d9306329a;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/inferior.h b/gdb/inferior.h index 1042a447fe..d33a01afaa 100644 --- a/gdb/inferior.h +++ b/gdb/inferior.h @@ -1,9 +1,7 @@ /* Variables that describe the inferior process running under GDB: Where it is, why it stopped, and how to step it. - Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, - 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008 - Free Software Foundation, Inc. + Copyright (C) 1986-2013 Free Software Foundation, Inc. This file is part of GDB. @@ -29,64 +27,53 @@ struct ui_file; struct type; struct gdbarch; struct regcache; +struct ui_out; +struct terminal_info; +struct target_desc_info; + +#include "ptid.h" /* For bpstat. */ #include "breakpoint.h" -/* For enum target_signal. */ +/* For enum gdb_signal. */ #include "target.h" /* For struct frame_id. */ #include "frame.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 *); - -extern void discard_inferior_status (struct inferior_status *); - -extern void write_inferior_status_register (struct inferior_status - *inf_status, int regno, - LONGEST val); +#include "progspace.h" +#include "registry.h" -/* 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; +struct infcall_suspend_state; +struct infcall_control_state; -/* The null or zero ptid, often used to indicate no process. */ -extern ptid_t null_ptid; +extern struct infcall_suspend_state *save_infcall_suspend_state (void); +extern struct infcall_control_state *save_infcall_control_state (void); -/* 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 void restore_infcall_suspend_state (struct infcall_suspend_state *); +extern void restore_infcall_control_state (struct infcall_control_state *); -/* Find/Create a ptid from just a pid. */ -ptid_t pid_to_ptid (int pid); +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 *); -/* Fetch the pid (process id) component from a ptid. */ -int ptid_get_pid (ptid_t ptid); +extern void discard_infcall_suspend_state (struct infcall_suspend_state *); +extern void discard_infcall_control_state (struct infcall_control_state *); -/* Fetch the lwp (lightweight process) component from a ptid. */ -long ptid_get_lwp (ptid_t ptid); +extern struct regcache * + get_infcall_suspend_state_regcache (struct infcall_suspend_state *); -/* Fetch the tid (thread id) component from a ptid. */ -long ptid_get_tid (ptid_t ptid); +/* Returns true if PTID matches filter FILTER. FILTER can be the wild + card MINUS_ONE_PTID (all ptid match it); can be a ptid representing + a process (ptid_is_pid returns true), in which case, all lwps and + threads of that given process match, lwps and threads of other + processes do not; or, it can represent a specific thread, in which + case, only that thread will match true. PTID must represent a + specific LWP or THREAD, it can never be a wild card. */ -/* Compare two ptids to see if they are equal */ -extern int ptid_equal (ptid_t p1, ptid_t p2); +extern int ptid_match (ptid_t ptid, ptid_t filter); /* Save value of inferior_ptid so that it may be restored by a later call to do_cleanups(). Returns the struct cleanup @@ -97,85 +84,84 @@ extern void set_sigint_trap (void); extern void clear_sigint_trap (void); -extern void set_sigio_trap (void); - -extern void clear_sigio_trap (void); - /* Set/get file name for default use for standard in/out in the inferior. */ 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. */ + redisplay the prompt until the execution is actually over. */ extern int sync_execution; -/* 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 gdb_environ *inferior_environ; +/* Inferior environment. */ extern void clear_proceed_status (void); -extern void proceed (CORE_ADDR, enum target_signal, int); +extern void proceed (CORE_ADDR, enum gdb_signal, int); + +extern int sched_multi; /* 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; +/* If set, the inferior should be controlled in non-stop mode. In + this mode, each thread is controlled independently. Execution + commands apply only to the selected thread by default, and stop + events stop only the thread that had the event -- the other threads + are kept running freely. */ +extern int non_stop; + +/* When set (default), the target should attempt to disable the operating + system's address space randomization feature when starting an inferior. */ +extern int disable_randomization; + extern void generic_mourn_inferior (void); extern void terminal_save_ours (void); extern void terminal_ours (void); -extern CORE_ADDR read_pc (void); - -extern void write_pc (CORE_ADDR); - -extern CORE_ADDR unsigned_pointer_to_address (struct type *type, +extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch, + struct type *type, const gdb_byte *buf); -extern void unsigned_address_to_pointer (struct type *type, 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 type *type, +extern CORE_ADDR signed_pointer_to_address (struct gdbarch *gdbarch, + struct type *type, const gdb_byte *buf); -extern void address_to_signed_pointer (struct type *type, gdb_byte *buf, +extern void address_to_signed_pointer (struct gdbarch *gdbarch, + struct type *type, gdb_byte *buf, CORE_ADDR addr); -extern void wait_for_inferior (int treat_exec_as_sigtrap); +extern void wait_for_inferior (void); + +extern void prepare_for_detach (void); extern void fetch_inferior_event (void *); extern void init_wait_for_inferior (void); -extern void close_exec_file (void); - extern void reopen_exec_file (void); /* The `resume' routine should only be called in special circumstances. Normally, use `proceed', which handles a lot of bookkeeping. */ -extern void resume (int, enum target_signal); +extern void resume (int, enum gdb_signal); + +extern ptid_t user_visible_resume_ptid (int step); + +extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *, + struct symtab_and_line , + struct frame_id); /* From misc files */ @@ -184,7 +170,7 @@ extern void default_print_registers_info (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, int all); -extern void child_terminal_info (char *, int); +extern void child_terminal_info (const char *, int); extern void term_info (char *, int); @@ -196,30 +182,24 @@ extern void terminal_init_inferior (void); extern void terminal_init_inferior_with_pgrp (int pgrp); -/* From procfs.c */ - -extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR)); - -extern ptid_t procfs_first_available (void); - /* From fork-child.c */ -extern void fork_inferior (char *, char *, char **, - void (*)(void), - void (*)(int), void (*)(void), char *); +extern int fork_inferior (char *, char *, char **, + void (*)(void), + void (*)(int), void (*)(void), char *, + void (*)(const char *, + char * const *, char * const *)); extern void startup_inferior (int); -extern char *construct_inferior_arguments (struct gdbarch *, int, char **); - -/* From inflow.c */ +extern char *construct_inferior_arguments (int, char **); -extern void new_tty_prefork (const char *); +/* From infrun.c */ -extern int gdb_has_a_terminal (void); +extern unsigned int debug_infrun; -/* From infrun.c */ +extern int stop_on_solib_events; extern void start_remote (int from_tty); @@ -242,9 +222,15 @@ extern void get_last_target_status(ptid_t *ptid, extern void follow_inferior_reset_breakpoints (void); -/* From infcmd.c */ +void set_step_info (struct frame_info *frame, struct symtab_and_line sal); + +/* Clear the convenience variables associated with the exit of the + inferior. Currently, those variables are $_exitcode and + $_exitsignal. */ -extern void tty_command (char *, int); +extern void clear_exit_convenience_vars (void); + +/* From infcmd.c */ extern void post_create_inferior (struct target_ops *, int); @@ -252,70 +238,60 @@ extern void attach_command (char *, int); extern char *get_inferior_args (void); -extern char *set_inferior_args (char *); +extern void set_inferior_args (char *); extern void set_inferior_args_vector (int, char **); extern void registers_info (char *, int); -extern void nexti_command (char *, int); +extern void continue_1 (int all_threads); -extern void stepi_command (char *, int); +extern void interrupt_target_1 (int all_threads); -extern void continue_command (char *, int); +extern void delete_longjmp_breakpoint_cleanup (void *arg); -extern void interrupt_target_command (char *args, int from_tty); +extern void detach_command (char *, int); -/* Last signal that the inferior received (why it stopped). */ +extern void notice_new_inferior (ptid_t, int, int); -extern enum target_signal stop_signal; +extern struct value *get_return_value (struct value *function, + struct type *value_type); -/* Address at which inferior stopped. */ +/* Whether to start up the debuggee under a shell. -extern CORE_ADDR stop_pc; + If startup-with-shell is set, GDB's "run" will attempt to start up + the debuggee under a shell. -/* Chain containing status of breakpoint(s) that we have stopped at. */ + This is in order for argument-expansion to occur. E.g., + + (gdb) run * -extern bpstat stop_bpstat; + The "*" gets expanded by the shell into a list of files. -/* Flag indicating that a command has proceeded the inferior past the - current breakpoint. */ + 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". -extern int breakpoint_proceeded; + 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; -/* Nonzero if stopped due to a step command. */ +/* Address at which inferior stopped. */ -extern int stop_step; +extern CORE_ADDR stop_pc; /* Nonzero if stopped due to completion of a stack dummy routine. */ -extern int stop_stack_dummy; +extern enum stop_stack_kind 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. - - 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.). */ - -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 struct frame_id step_frame_id; - -/* 1 means step over all subroutine calls. - -1 means step over calls to undebuggable functions. */ +/* 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. */ enum step_over_calls_kind { @@ -324,14 +300,6 @@ enum step_over_calls_kind STEP_OVER_UNDEBUGGABLE }; -extern enum step_over_calls_kind 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; - /* 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 @@ -339,10 +307,10 @@ extern int step_multi; setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP except that there is no need to hide a signal. */ -/* It is also used after attach, due to attaching to a process. This +/* It is also used after attach, due to attaching to a process. This is a bit trickier. 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 + 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. @@ -350,7 +318,7 @@ extern int step_multi; 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 + 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 @@ -365,25 +333,25 @@ enum stop_kind STOP_QUIETLY_NO_SIGSTOP }; -extern enum stop_kind stop_soon; - -/* Nonzero if proceed is being used for a "finish" command or a similar - situation when stop_registers should be saved. */ +/* Reverse execution. */ +enum exec_direction_kind + { + EXEC_FORWARD, + EXEC_REVERSE + }; -extern int proceed_to_finish; +/* The current execution direction. This should only be set to enum + exec_direction_kind values. It is only an int to make it + compatible with make_cleanup_restore_integer. */ +extern int execution_direction; -/* Save register contents here when about to pop a stack dummy frame, - if-and-only-if proceed_to_finish is set. +/* Save register contents here when executing a "finish" command or are + 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 regcache *stop_registers; -/* Nonzero if the child process in inferior_ptid was attached rather - than forked. */ - -extern int attach_flag; - /* True if we are debugging displaced stepping. */ extern int debug_displaced; @@ -391,33 +359,296 @@ extern int debug_displaced; void displaced_step_dump_bytes (struct ui_file *file, const gdb_byte *buf, size_t len); - -/* When set, normal_stop will not call the normal_stop observer. */ -extern int suppress_run_stop_observers; +struct displaced_step_closure *get_displaced_step_closure_by_addr (CORE_ADDR addr); /* Possible values for gdbarch_call_dummy_location. */ #define ON_STACK 1 #define AT_ENTRY_POINT 4 -#define AT_SYMBOL 5 -/* 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 +/* 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 most implementations. + Overridden in nm.h files. */ #if !defined(START_INFERIOR_TRAPS_EXPECTED) -#define START_INFERIOR_TRAPS_EXPECTED 2 +#define START_INFERIOR_TRAPS_EXPECTED 1 +#endif + +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; +}; + +/* Inferior process specific part of `struct infcall_suspend_state'. + + Inferior thread counterpart is `struct thread_suspend_state'. */ + +#if 0 /* Currently unused and empty structures are not valid C. */ +struct inferior_suspend_state +{ +}; #endif + +/* 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; + + /* State of inferior process to restore after GDB is done with an inferior + call. See `struct inferior_suspend_state'. */ +#if 0 /* Currently unused and empty structures are not valid C. */ + struct inferior_suspend_state suspend; +#endif + + /* 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; + + /* The name of terminal device to use for I/O. */ + char *terminal; + + /* Environment to use for running inferior, + in format described in environ.h. */ + struct gdb_environ *environment; + + /* Nonzero if this child process was attached rather than + forked. */ + int attach_flag; + + /* 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; + + /* 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; + + /* True if this inferior should be detached when it's vfork sibling + exits or execs. */ + int pending_detach; + + /* 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; + + /* True if we're in the process of detaching from this inferior. */ + int detaching; + + /* 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; + + /* Private data used by the target vector implementation. */ + struct private_inferior *private; + + /* 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; + + /* 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; + + /* 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; + + /* The architecture associated with the inferior through the + connection to the target. + + 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; + + /* Per inferior data-pointers required by other GDB modules. */ + REGISTRY_FIELDS; +}; + +/* Keep a registry of per-inferior data-pointers required by other GDB + modules. */ + +DECLARE_REGISTRY (inferior); + +/* Create an empty inferior list, or empty the existing one. */ +extern void init_inferior_list (void); + +/* 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); + +/* Same as add_inferior, but don't print new inferior notifications to + the CLI. */ +extern struct inferior *add_inferior_silent (int pid); + +/* Delete an existing inferior list entry, due to inferior exit. */ +extern void delete_inferior (int pid); + +extern void delete_inferior_1 (struct inferior *todel, int silent); + +/* Same as delete_inferior, but don't print new inferior notifications + to the CLI. */ +extern void delete_inferior_silent (int pid); + +/* Delete an existing inferior list entry, due to inferior detaching. */ +extern void detach_inferior (int pid); + +extern void exit_inferior (int pid); + +extern void exit_inferior_silent (int pid); + +extern void exit_inferior_num_silent (int num); + +extern void inferior_appeared (struct inferior *inf, int pid); + +/* Get rid of all inferiors. */ +extern void discard_all_inferiors (void); + +/* 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); + +/* 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); + +/* Boolean test for an already-known pid. */ +extern int in_inferior_list (int pid); + +/* Boolean test for an already-known inferior id (GDB's homegrown id, + not the system's). */ +extern int valid_gdb_inferior_id (int num); + +/* Search function to lookup an inferior by target 'pid'. */ +extern struct inferior *find_inferior_pid (int pid); + +/* Search function to lookup an inferior by GDB 'num'. */ +extern struct inferior *find_inferior_id (int num); + +/* Find an inferior bound to PSPACE. */ +extern struct inferior * + find_inferior_for_program_space (struct program_space *pspace); + +/* Inferior iterator function. + + 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. + + It is safe to delete the iterated inferior from the callback. */ +extern struct inferior *iterate_over_inferiors (int (*) (struct inferior *, + void *), + void *); + +/* Returns true if the inferior list is not empty. */ +extern int have_inferiors (void); + +/* 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); + +/* 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); + +extern void set_current_inferior (struct inferior *); + +extern struct cleanup *save_current_inferior (void); + +/* Traverse all inferiors. */ + +#define ALL_INFERIORS(I) \ + for ((I) = inferior_list; (I); (I) = (I)->next) + +extern struct inferior *inferior_list; + +/* Prune away automatically added inferiors that aren't required + anymore. */ +extern void prune_inferiors (void); + +extern int number_of_inferiors (void); + +extern struct inferior *add_inferior_with_spaces (void); + +extern void update_observer_mode (void); + +extern void update_signals_program_target (void); + +extern void signal_catch_update (const unsigned int *); + +/* In some circumstances we allow a command to specify a numeric + signal. The idea is to keep these circumstances limited so that + users (and scripts) develop portable habits. For comparison, + POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a + numeric signal at all is obsolescent. We are slightly more lenient + and allow 1-15 which should match host signal numbers on most + systems. Use of symbolic signal names is strongly encouraged. */ + +enum gdb_signal gdb_signal_from_command (int num); + #endif /* !defined (INFERIOR_H) */