/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright 1986, 1989, 1992, 1996, 1998 Free Software Foundation, Inc.
+
+ Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 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;
+
+#include "ptid.h"
+
/* For bpstat. */
#include "breakpoint.h"
/* For enum target_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".
+/* For struct frame_id. */
+#include "frame.h"
- 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. */
+#include "progspace.h"
-struct inferior_status;
+struct infcall_suspend_state;
+struct infcall_control_state;
-extern struct inferior_status *save_inferior_status (int);
+extern struct infcall_suspend_state *save_infcall_suspend_state (void);
+extern struct infcall_control_state *save_infcall_control_state (void);
-extern void restore_inferior_status (struct inferior_status *);
+extern void restore_infcall_suspend_state (struct infcall_suspend_state *);
+extern void restore_infcall_control_state (struct infcall_control_state *);
-extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
+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 *);
-extern void discard_inferior_status (struct inferior_status *);
+extern void discard_infcall_suspend_state (struct infcall_suspend_state *);
+extern void discard_infcall_control_state (struct infcall_control_state *);
-extern void write_inferior_status_register (struct inferior_status
- *inf_status, int regno,
- LONGEST val);
+extern struct regcache *
+ get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
-/* This macro gives the number of registers actually in use by the
- inferior. This may be less than the total number of registers,
- perhaps depending on the actual CPU in use or program being run.
- FIXME: This could be replaced by the new MULTI_ARCH capability. */
+/* 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. */
-#ifndef ARCH_NUM_REGS
-#define ARCH_NUM_REGS NUM_REGS
-#endif
+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
+ pointer needed for later doing the cleanup. */
+extern struct cleanup * save_inferior_ptid (void);
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. */
-/* 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);
-extern char *inferior_io_terminal;
+/* Collected pid, tid, etc. of the debugged inferior. When there's
+ no inferior, PIDGET (inferior_ptid) will be 0. */
-/* Pid of our debugged inferior, or 0 if no inferior now. */
-
-extern int inferior_pid;
-
-/* 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;
+extern ptid_t inferior_ptid;
/* 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;
-/* This is only valid when inferior_pid is non-zero.
+/* Inferior environment. */
- If this is 0, then exec events should be noticed and responded to
- by the debugger (i.e., be reported to the user).
+extern void clear_proceed_status (void);
- 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;
+extern void proceed (CORE_ADDR, enum target_signal, int);
-/* This is only valid when inferior_ignoring_startup_exec_events is
- zero.
+extern int sched_multi;
- 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;
+/* 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;
-/* Inferior environment. */
+/* 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;
-extern struct environ *inferior_environ;
+/* If set (default), when following a fork, GDB will detach from one
+ the fork branches, child or parent. Exactly which branch is
+ detached depends on 'set follow-fork-mode' setting. */
+extern int detach_fork;
-/* Character array containing an image of the inferior programs'
- registers. */
+/* 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 char *registers;
+extern void generic_mourn_inferior (void);
-/* Character array containing the current state of each register
- (unavailable<0, valid=0, invalid>0). */
+extern void terminal_save_ours (void);
-extern signed char *register_valid;
+extern void terminal_ours (void);
-extern void clear_proceed_status (void);
+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 proceed (CORE_ADDR, enum target_signal, int);
+extern void wait_for_inferior (void);
-extern void kill_inferior (void);
+extern void prepare_for_detach (void);
-extern void generic_mourn_inferior (void);
+extern void fetch_inferior_event (void *);
-extern void terminal_ours (void);
+extern void init_wait_for_inferior (void);
-extern int run_stack_dummy (CORE_ADDR, char *);
+extern void close_exec_file (void);
-extern CORE_ADDR read_pc (void);
+extern void reopen_exec_file (void);
-extern CORE_ADDR read_pc_pid (int);
+/* The `resume' routine should only be called in special circumstances.
+ Normally, use `proceed', which handles a lot of bookkeeping. */
-extern CORE_ADDR generic_target_read_pc (int);
+extern void resume (int, enum target_signal);
-extern void write_pc (CORE_ADDR);
+extern ptid_t user_visible_resume_ptid (int step);
-extern void write_pc_pid (CORE_ADDR, int);
+extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *,
+ struct symtab_and_line ,
+ struct frame_id);
-extern void generic_target_write_pc (CORE_ADDR, int);
+/* From misc files */
-extern CORE_ADDR read_sp (void);
+extern void default_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int all);
-extern CORE_ADDR generic_target_read_sp (void);
+extern void child_terminal_info (char *, int);
-extern void write_sp (CORE_ADDR);
+extern void term_info (char *, int);
-extern void generic_target_write_sp (CORE_ADDR);
+extern void terminal_ours_for_output (void);
-extern CORE_ADDR read_fp (void);
+extern void terminal_inferior (void);
-extern CORE_ADDR generic_target_read_fp (void);
+extern void terminal_init_inferior (void);
-extern void write_fp (CORE_ADDR);
+extern void terminal_init_inferior_with_pgrp (int pgrp);
-extern void generic_target_write_fp (CORE_ADDR);
+/* From fork-child.c */
-extern CORE_ADDR unsigned_pointer_to_address (struct type *type, void *buf);
+extern int fork_inferior (char *, char *, char **,
+ void (*)(void),
+ void (*)(int), void (*)(void), char *,
+ void (*)(const char *,
+ char * const *, char * const *));
-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 wait_for_inferior (void);
+extern void startup_inferior (int);
-extern void fetch_inferior_event (void *);
+extern char *construct_inferior_arguments (int, char **);
-extern void init_wait_for_inferior (void);
+/* From infrun.c */
-extern void close_exec_file (void);
+extern int debug_infrun;
-extern void reopen_exec_file (void);
+extern int stop_on_solib_events;
-/* The `resume' routine should only be called in special circumstances.
- Normally, use `proceed', which handles a lot of bookkeeping. */
+extern void start_remote (int from_tty);
-extern void resume (int, enum target_signal);
+extern void normal_stop (void);
-/* From misc files */
+extern int signal_stop_state (int);
-extern void store_inferior_registers (int);
+extern int signal_print_state (int);
-extern void fetch_inferior_registers (int);
+extern int signal_pass_state (int);
-extern void solib_create_inferior_hook (void);
+extern int signal_stop_update (int, int);
-extern void child_terminal_info (char *, int);
+extern int signal_print_update (int, int);
-extern void term_info (char *, int);
+extern int signal_pass_update (int, int);
-extern void terminal_ours_for_output (void);
+extern void get_last_target_status(ptid_t *ptid,
+ struct target_waitstatus *status);
-extern void terminal_inferior (void);
+extern void follow_inferior_reset_breakpoints (void);
-extern void terminal_init_inferior (void);
+/* Throw an error indicating the current thread is running. */
+extern void error_is_running (void);
-extern void terminal_init_inferior_with_pgrp (int pgrp);
+/* Calls error_is_running if the current thread is running. */
+extern void ensure_not_running (void);
-/* From infptrace.c or infttrace.c */
+void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
-extern int attach (int);
+/* From infcmd.c */
-#if !defined(REQUIRE_ATTACH)
-#define REQUIRE_ATTACH attach
-#endif
+extern void post_create_inferior (struct target_ops *, int);
-#if !defined(REQUIRE_DETACH)
-#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
-#endif
+extern void attach_command (char *, int);
-extern void detach (int);
+extern char *get_inferior_args (void);
-/* PTRACE method of waiting for inferior process. */
-int ptrace_wait (int, int *);
+extern void set_inferior_args (char *);
-extern void child_resume (int, int, enum target_signal);
+extern void set_inferior_args_vector (int, char **);
-#ifndef PTRACE_ARG3_TYPE
-#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
-#endif
+extern void registers_info (char *, int);
-extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int);
+extern void nexti_command (char *, int);
-extern void pre_fork_inferior (void);
+extern void stepi_command (char *, int);
-/* From procfs.c */
+extern void continue_1 (int all_threads);
-extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
+extern void continue_command (char *, int);
-extern int procfs_first_available (void);
+extern void interrupt_target_command (char *args, int from_tty);
-/* From fork-child.c */
+extern void interrupt_target_1 (int all_threads);
-extern void fork_inferior (char *, char *, char **,
- void (*)(void),
- void (*)(int), void (*)(void), char *);
+extern void delete_longjmp_breakpoint_cleanup (void *arg);
+extern void detach_command (char *, int);
-extern void clone_and_follow_inferior (int, int *);
+extern void notice_new_inferior (ptid_t, int, int);
-extern void startup_inferior (int);
+/* Address at which inferior stopped. */
-/* From inflow.c */
+extern CORE_ADDR stop_pc;
-extern void new_tty_prefork (char *);
+/* Nonzero if stopped due to completion of a stack dummy routine. */
-extern int gdb_has_a_terminal (void);
+extern enum stop_stack_kind stop_stack_dummy;
-/* From infrun.c */
+/* Nonzero if program stopped due to a random (unexpected) signal in
+ inferior process. */
-extern void start_remote (void);
+extern int stopped_by_random_signal;
-extern void normal_stop (void);
+/* 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
+ {
+ STEP_OVER_NONE,
+ STEP_OVER_ALL,
+ STEP_OVER_UNDEBUGGABLE
+ };
+
+/* 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. */
+
+/* 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
+ 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
+ };
+
+/* Reverse execution. */
+enum exec_direction_kind
+ {
+ EXEC_FORWARD,
+ EXEC_REVERSE
+ };
+
+/* 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 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 int signal_stop_state (int);
+extern struct regcache *stop_registers;
-extern int signal_print_state (int);
+/* True if we are debugging displaced stepping. */
+extern int debug_displaced;
-extern int signal_pass_state (int);
+/* Dump LEN bytes at BUF in hex to FILE, followed by a newline. */
+void displaced_step_dump_bytes (struct ui_file *file,
+ const gdb_byte *buf, size_t len);
-extern int signal_stop_update (int, int);
+struct displaced_step_closure *get_displaced_step_closure_by_addr (CORE_ADDR addr);
+\f
+/* Possible values for gdbarch_call_dummy_location. */
+#define ON_STACK 1
+#define AT_ENTRY_POINT 4
+#define AT_SYMBOL 5
-extern int signal_print_update (int, int);
+/* 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
-extern int signal_pass_update (int, int);
+struct private_inferior;
-/* From infcmd.c */
+/* Inferior process specific part of `struct infcall_control_state'.
-extern void tty_command (char *, int);
+ Inferior thread counterpart is `struct thread_control_state'. */
-extern void attach_command (char *, int);
+struct inferior_control_state
+{
+ /* See the definition of stop_kind above. */
+ enum stop_kind stop_soon;
+};
-/* Last signal that the inferior received (why it stopped). */
+/* Inferior process specific part of `struct infcall_suspend_state'.
-extern enum target_signal stop_signal;
+ Inferior thread counterpart is `struct thread_suspend_state'. */
-/* Address at which inferior stopped. */
+struct inferior_suspend_state
+{
+};
-extern CORE_ADDR stop_pc;
+/* 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. */
-/* Chain containing status of breakpoint(s) that we have stopped at. */
+struct inferior
+{
+ /* Pointer to next inferior in singly-linked list of inferiors. */
+ struct inferior *next;
-extern bpstat stop_bpstat;
+ /* Convenient handle (GDB inferior id). Unique across all
+ inferiors. */
+ int num;
-/* Flag indicating that a command has proceeded the inferior past the
- current breakpoint. */
+ /* Actual target inferior id, usually, a process id. This matches
+ the ptid_t.pid member of threads of this inferior. */
+ int pid;
-extern int breakpoint_proceeded;
+ /* State of GDB control of inferior process execution.
+ See `struct inferior_control_state'. */
+ struct inferior_control_state control;
-/* Nonzero if stopped due to a step command. */
+ /* State of inferior process to restore after GDB is done with an inferior
+ call. See `struct inferior_suspend_state'. */
+ struct inferior_suspend_state suspend;
-extern int stop_step;
+ /* 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;
-/* Nonzero if stopped due to completion of a stack dummy routine. */
+ /* The address space bound to this inferior. */
+ struct address_space *aspace;
+
+ /* The program space bound to this inferior. */
+ struct program_space *pspace;
-extern int stop_stack_dummy;
+ /* The arguments string to use when running. */
+ char *args;
-/* Nonzero if program stopped due to a random (unexpected) signal in
- inferior process. */
+ /* The size of elements in argv. */
+ int argc;
-extern int stopped_by_random_signal;
+ /* 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;
-/* 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.
+ /* The name of terminal device to use for I/O. */
+ char *terminal;
- 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.). */
+ /* Environment to use for running inferior,
+ in format described in environ.h. */
+ struct gdb_environ *environment;
-extern CORE_ADDR step_range_start; /* Inclusive */
-extern CORE_ADDR step_range_end; /* Exclusive */
+ /* Nonzero if this child process was attached rather than
+ forked. */
+ int attach_flag;
-/* 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. */
+ /* 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 CORE_ADDR step_frame_address;
+ /* 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;
-/* Our notion of the current stack pointer. */
+ /* True if this inferior should be detached when it's vfork sibling
+ exits or execs. */
+ int pending_detach;
-extern CORE_ADDR step_sp;
+ /* 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;
-/* 1 means step over all subroutine calls.
- -1 means step over calls to undebuggable functions. */
+ /* True if we're in the process of detaching from this inferior. */
+ int detaching;
-extern int step_over_calls;
+ /* 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;
-/* If stepping, nonzero means step count is > 1
- so don't print frame next time inferior stops
- if it stops due to stepping. */
+ /* Private data used by the target vector implementation. */
+ struct private_inferior *private;
-extern int step_multi;
+ /* 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;
-/* 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?). */
+ /* We keep a count of the number of times the user has requested a
+ particular syscall to be tracked, and pass this information to the
+ target. This lets capable targets implement filtering directly. */
-extern int stop_soon_quietly;
+ /* Number of times that "any" syscall is requested. */
+ int any_syscall_count;
-/* Nonzero if proceed is being used for a "finish" command or a similar
- situation when stop_registers should be saved. */
+ /* Count of each system call. */
+ VEC(int) *syscalls_counts;
-extern int proceed_to_finish;
+ /* This counts all syscall catch requests, so we can readily determine
+ if any catching is necessary. */
+ int total_syscalls_count;
-/* 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). */
+ /* Per inferior data-pointers required by other GDB modules. */
+ void **data;
+ unsigned num_data;
+};
-extern char *stop_registers;
+/* Keep a registry of per-inferior data-pointers required by other GDB
+ modules. */
-/* Nonzero if the child process in inferior_pid was attached rather
- than forked. */
+extern const struct inferior_data *register_inferior_data (void);
+extern const struct inferior_data *register_inferior_data_with_cleanup
+ (void (*cleanup) (struct inferior *, void *));
+extern void clear_inferior_data (struct inferior *inf);
+extern void set_inferior_data (struct inferior *inf,
+ const struct inferior_data *data, void *value);
+extern void *inferior_data (struct inferior *inf,
+ const struct inferior_data *data);
-extern int attach_flag;
-\f
-/* Sigtramp is a routine that the kernel calls (which then calls the
- signal handler). On most machines it is a library routine that
- is linked into the executable.
-
- This macro, given a program counter value and the name of the
- function in which that PC resides (which can be null if the
- name is not known), returns nonzero if the PC and name show
- that we are in sigtramp.
-
- On most machines just see if the name is sigtramp (and if we have
- no name, assume we are not in sigtramp). */
-#if !defined (IN_SIGTRAMP)
-#if defined (SIGTRAMP_START)
-#define IN_SIGTRAMP(pc, name) \
- ((pc) >= SIGTRAMP_START(pc) \
- && (pc) < SIGTRAMP_END(pc) \
- )
-#else
-#define IN_SIGTRAMP(pc, name) \
- (name && STREQ ("_sigtramp", name))
-#endif
-#endif
-\f
-/* Possible values for CALL_DUMMY_LOCATION. */
-#define ON_STACK 1
-#define BEFORE_TEXT_END 2
-#define AFTER_TEXT_END 3
-#define AT_ENTRY_POINT 4
+/* Create an empty inferior list, or empty the existing one. */
+extern void init_inferior_list (void);
-#if !defined (USE_GENERIC_DUMMY_FRAMES)
-#define USE_GENERIC_DUMMY_FRAMES 0
-#endif
+/* 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);
-#if !defined (CALL_DUMMY_LOCATION)
-#define CALL_DUMMY_LOCATION ON_STACK
-#endif /* No CALL_DUMMY_LOCATION. */
+/* Same as add_inferior, but don't print new inferior notifications to
+ the CLI. */
+extern struct inferior *add_inferior_silent (int pid);
-#if !defined (CALL_DUMMY_ADDRESS)
-#define CALL_DUMMY_ADDRESS() (internal_error ("CALL_DUMMY_ADDRESS"), 0)
-#endif
-#if !defined (CALL_DUMMY_START_OFFSET)
-#define CALL_DUMMY_START_OFFSET (internal_error ("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 ("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 ("CALL_DUMMY_LENGTH"), 0)
-#endif
+/* Delete an existing inferior list entry, due to inferior exit. */
+extern void delete_inferior (int pid);
-#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 ("CALL_DUMMY_STACK_ADJUST"), 0)
-#endif
-#if !defined (CALL_DUMMY_STACK_ADJUST_P)
-#define CALL_DUMMY_STACK_ADJUST_P (0)
-#endif
+extern void delete_inferior_1 (struct inferior *todel, int silent);
-/* FIXME: cagney/2000-04-17: gdbarch should manage this. The default
- shouldn't be necessary. */
+/* Same as delete_inferior, but don't print new inferior notifications
+ to the CLI. */
+extern void delete_inferior_silent (int pid);
-#if !defined (CALL_DUMMY_P)
-#if defined (CALL_DUMMY)
-#define CALL_DUMMY_P 1
-#else
-#define CALL_DUMMY_P 0
-#endif
-#endif
+/* Delete an existing inferior list entry, due to inferior detaching. */
+extern void detach_inferior (int pid);
-#if !defined PUSH_DUMMY_FRAME
-#define PUSH_DUMMY_FRAME (internal_error ("PUSH_DUMMY_FRAME"), 0)
-#endif
+extern void exit_inferior (int pid);
-#if !defined FIX_CALL_DUMMY
-#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error ("FIX_CALL_DUMMY"), 0)
-#endif
+extern void exit_inferior_silent (int pid);
-#if !defined STORE_STRUCT_RETURN
-#define STORE_STRUCT_RETURN(a1,a2) (internal_error ("STORE_STRUCT_RETURN"), 0)
-#endif
+extern void exit_inferior_num_silent (int num);
+extern void inferior_appeared (struct inferior *inf, int pid);
-/* Are we in a call dummy? */
+/* Get rid of all inferiors. */
+extern void discard_all_inferiors (void);
-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
+/* 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 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
+/* 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);
-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
+/* Boolean test for an already-known pid. */
+extern int in_inferior_list (int pid);
-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
+/* Boolean test for an already-known inferior id (GDB's homegrown id,
+ not the system's). */
+extern int valid_gdb_inferior_id (int num);
-/* 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
+/* 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);
-/* 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