/* 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
+ 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;
+
/* 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"
+
+/* Two structures are used to record inferior state.
+
+ inferior_thread_state contains state about the program itself like its
+ registers and any signal it received when it last stopped.
+ This state must be restored regardless of how the inferior function call
+ ends (either successfully, or after it hits a breakpoint or signal)
+ if the program is to properly continue where it left off.
+
+ inferior_status contains state regarding gdb's control of the inferior
+ itself like stepping control. It also contains session state like the
+ user's currently selected frame.
- 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. */
+ Call these routines around hand called functions, including function calls
+ in conditional breakpoints for example. */
+struct inferior_thread_state;
struct inferior_status;
-extern struct inferior_status *save_inferior_status (int);
+extern struct inferior_thread_state *save_inferior_thread_state (void);
+extern struct inferior_status *save_inferior_status (void);
+extern void restore_inferior_thread_state (struct inferior_thread_state *);
extern void restore_inferior_status (struct inferior_status *);
+extern struct cleanup *make_cleanup_restore_inferior_thread_state (struct inferior_thread_state *);
extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
+extern void discard_inferior_thread_state (struct inferior_thread_state *);
extern void discard_inferior_status (struct inferior_status *);
-extern void write_inferior_status_register (struct inferior_status
- *inf_status, int regno,
- LONGEST val);
+extern struct regcache *get_inferior_thread_state_regcache (struct inferior_thread_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. */
+/* 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;
-#ifndef ARCH_NUM_REGS
-#define ARCH_NUM_REGS NUM_REGS
-#endif
+/* The null or zero ptid, often used to indicate no process. */
+extern ptid_t null_ptid;
-extern void set_sigint_trap (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 clear_sigint_trap (void);
+/* Find/Create a ptid from just a pid. */
+ptid_t pid_to_ptid (int pid);
-extern void set_sigio_trap (void);
+/* Fetch the pid (process id) component from a ptid. */
+int ptid_get_pid (ptid_t ptid);
-extern void clear_sigio_trap (void);
+/* Fetch the lwp (lightweight process) component from a ptid. */
+long ptid_get_lwp (ptid_t ptid);
-/* File name for default use for standard in/out in the inferior. */
+/* Fetch the tid (thread id) component from a ptid. */
+long ptid_get_tid (ptid_t ptid);
-extern char *inferior_io_terminal;
+/* Compare two ptids to see if they are equal */
+extern int ptid_equal (ptid_t p1, ptid_t p2);
-/* Pid of our debugged inferior, or 0 if no inferior now. */
+/* Return true if PTID represents a process id. */
+extern int ptid_is_pid (ptid_t ptid);
-extern int inferior_pid;
+/* 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);
-/* 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 void set_sigint_trap (void);
-/* 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;
+extern void clear_sigint_trap (void);
-/* This is only valid when inferior_pid is non-zero.
+/* Set/get file name for default use for standard in/out in the inferior. */
- 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 set_inferior_io_terminal (const char *terminal_name);
+extern const char *get_inferior_io_terminal (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;
+/* Collected pid, tid, etc. of the debugged inferior. When there's
+ no inferior, PIDGET (inferior_ptid) will be 0. */
-/* This is only valid when inferior_ignoring_startup_exec_events is
- zero.
+extern ptid_t inferior_ptid;
- 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;
+/* 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;
/* Inferior environment. */
-extern struct environ *inferior_environ;
-
-/* Character array containing an image of the inferior programs'
- registers. */
-
-extern char *registers;
-
-/* Character array containing the current state of each register
- (unavailable<0, valid=0, invalid>0). */
-
-extern signed char *register_valid;
+extern struct gdb_environ *inferior_environ;
extern void clear_proceed_status (void);
extern void proceed (CORE_ADDR, enum target_signal, int);
-extern void kill_inferior (void);
-
-extern void generic_mourn_inferior (void);
-
-extern void terminal_ours (void);
-
-extern int run_stack_dummy (CORE_ADDR, char *);
-
-extern CORE_ADDR read_pc (void);
-
-extern CORE_ADDR read_pc_pid (int);
+extern int sched_multi;
-extern CORE_ADDR generic_target_read_pc (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 write_pc (CORE_ADDR);
+/* 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 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 void write_pc_pid (CORE_ADDR, int);
-
-extern void generic_target_write_pc (CORE_ADDR, int);
-
-extern CORE_ADDR read_sp (void);
-
-extern CORE_ADDR generic_target_read_sp (void);
-
-extern void write_sp (CORE_ADDR);
-
-extern void generic_target_write_sp (CORE_ADDR);
-
-extern CORE_ADDR read_fp (void);
-
-extern CORE_ADDR generic_target_read_fp (void);
-
-extern void write_fp (CORE_ADDR);
+extern void generic_mourn_inferior (void);
-extern void generic_target_write_fp (CORE_ADDR);
+extern void terminal_save_ours (void);
-extern CORE_ADDR unsigned_pointer_to_address (struct type *type, void *buf);
+extern void terminal_ours (void);
-extern void unsigned_address_to_pointer (struct type *type, void *buf,
+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 type *type, void *buf);
-extern void address_to_signed_pointer (struct type *type, void *buf,
+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 wait_for_inferior (void);
+extern void wait_for_inferior (int treat_exec_as_sigtrap);
extern void fetch_inferior_event (void *);
/* From misc files */
-extern void store_inferior_registers (int);
-
-extern void fetch_inferior_registers (int);
-
-extern void solib_create_inferior_hook (void);
+extern void default_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int all);
extern void child_terminal_info (char *, int);
extern void terminal_init_inferior_with_pgrp (int pgrp);
-/* From infptrace.c or infttrace.c */
-
-extern int attach (int);
-
-#if !defined(REQUIRE_ATTACH)
-#define REQUIRE_ATTACH attach
-#endif
-
-#if !defined(REQUIRE_DETACH)
-#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
-#endif
-
-extern void detach (int);
-
-/* PTRACE method of waiting for inferior process. */
-int ptrace_wait (int, int *);
-
-extern void child_resume (int, int, enum target_signal);
-
-#ifndef PTRACE_ARG3_TYPE
-#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
-#endif
-
-extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int);
-
-extern void pre_fork_inferior (void);
-
-/* From procfs.c */
-
-extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
-
-extern int 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 *);
-extern void clone_and_follow_inferior (int, int *);
-
extern void startup_inferior (int);
-/* From inflow.c */
-
-extern void new_tty_prefork (char *);
-
-extern int gdb_has_a_terminal (void);
+extern char *construct_inferior_arguments (int, char **);
/* From infrun.c */
-extern void start_remote (void);
+extern void start_remote (int from_tty);
extern void normal_stop (void);
extern int signal_pass_update (int, int);
+extern void get_last_target_status(ptid_t *ptid,
+ struct target_waitstatus *status);
+
+extern void follow_inferior_reset_breakpoints (void);
+
+/* Throw an error indicating the current thread is running. */
+extern void error_is_running (void);
+
+/* Calls error_is_running if the current thread is running. */
+extern void ensure_not_running (void);
+
+void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
+
/* From infcmd.c */
extern void tty_command (char *, int);
+extern void post_create_inferior (struct target_ops *, int);
+
extern void attach_command (char *, int);
-/* Last signal that the inferior received (why it stopped). */
+extern char *get_inferior_args (void);
-extern enum target_signal stop_signal;
+extern char *set_inferior_args (char *);
-/* Address at which inferior stopped. */
+extern void set_inferior_args_vector (int, char **);
-extern CORE_ADDR stop_pc;
+extern void registers_info (char *, int);
+
+extern void nexti_command (char *, int);
+
+extern void stepi_command (char *, int);
-/* Chain containing status of breakpoint(s) that we have stopped at. */
+extern void continue_1 (int all_threads);
-extern bpstat stop_bpstat;
+extern void continue_command (char *, int);
-/* Flag indicating that a command has proceeded the inferior past the
- current breakpoint. */
+extern void interrupt_target_command (char *args, int from_tty);
-extern int breakpoint_proceeded;
+extern void interrupt_target_1 (int all_threads);
-/* Nonzero if stopped due to a step command. */
+extern void detach_command (char *, int);
-extern int stop_step;
+extern void notice_new_inferior (ptid_t, int, int);
+
+/* Address at which inferior stopped. */
+
+extern CORE_ADDR stop_pc;
/* Nonzero if stopped due to completion of a stack dummy routine. */
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.
+/* 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,
+ EXEC_ERROR
+ };
+
+extern enum exec_direction_kind 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). */
- 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 struct regcache *stop_registers;
-extern CORE_ADDR step_range_start; /* Inclusive */
-extern CORE_ADDR step_range_end; /* Exclusive */
+/* True if we are debugging displaced stepping. */
+extern int debug_displaced;
-/* 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. */
+/* 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 CORE_ADDR step_frame_address;
+\f
+/* Possible values for gdbarch_call_dummy_location. */
+#define ON_STACK 1
+#define AT_ENTRY_POINT 4
+#define AT_SYMBOL 5
-/* Our notion of the current stack pointer. */
+/* 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 CORE_ADDR step_sp;
+struct private_inferior;
-/* 1 means step over all subroutine calls.
- -1 means step over calls to undebuggable functions. */
+/* 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. */
-extern int step_over_calls;
+struct inferior
+{
+ /* Pointer to next inferior in singly-linked list of inferiors. */
+ struct inferior *next;
-/* If stepping, nonzero means step count is > 1
- so don't print frame next time inferior stops
- if it stops due to stepping. */
+ /* Convenient handle (GDB inferior id). Unique across all
+ inferiors. */
+ int num;
-extern int step_multi;
+ /* Actual target inferior id, usually, a process id. This matches
+ the ptid_t.pid member of threads of this inferior. */
+ int pid;
-/* 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?). */
+ /* See the definition of stop_kind above. */
+ enum stop_kind stop_soon;
-extern int stop_soon_quietly;
+ /* Nonzero if this child process was attached rather than
+ forked. */
+ int attach_flag;
-/* Nonzero if proceed is being used for a "finish" command or a similar
- situation when stop_registers should be saved. */
+ /* 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 int proceed_to_finish;
+ /* Terminal info and state managed by inflow.c. */
+ struct terminal_info *terminal_info;
-/* 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). */
+ /* Private data used by the target vector implementation. */
+ struct private_inferior *private;
+};
-extern char *stop_registers;
+/* Create an empty inferior list, or empty the existing one. */
+extern void init_inferior_list (void);
-/* Nonzero if the child process in inferior_pid was attached rather
- than forked. */
+/* 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);
-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
+/* Same as add_inferior, but don't print new inferior notifications to
+ the CLI. */
+extern struct inferior *add_inferior_silent (int pid);
-#if !defined (USE_GENERIC_DUMMY_FRAMES)
-#define USE_GENERIC_DUMMY_FRAMES 0
-#endif
+/* Delete an existing inferior list entry, due to inferior exit. */
+extern void delete_inferior (int pid);
-#if !defined (CALL_DUMMY_LOCATION)
-#define CALL_DUMMY_LOCATION ON_STACK
-#endif /* No CALL_DUMMY_LOCATION. */
+/* 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_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 detaching. */
+extern void detach_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
+/* Get rid of all inferiors. */
+extern void discard_all_inferiors (void);
-/* FIXME: cagney/2000-04-17: gdbarch should manage this. The default
- shouldn't be necessary. */
+/* 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);
-#if !defined (CALL_DUMMY_P)
-#if defined (CALL_DUMMY)
-#define CALL_DUMMY_P 1
-#else
-#define CALL_DUMMY_P 0
-#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);
-#if !defined PUSH_DUMMY_FRAME
-#define PUSH_DUMMY_FRAME (internal_error ("PUSH_DUMMY_FRAME"), 0)
-#endif
+/* Boolean test for an already-known pid. */
+extern int in_inferior_list (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
+/* Boolean test for an already-known inferior id (GDB's homegrown id,
+ not the system's). */
+extern int valid_gdb_inferior_id (int num);
-#if !defined STORE_STRUCT_RETURN
-#define STORE_STRUCT_RETURN(a1,a2) (internal_error ("STORE_STRUCT_RETURN"), 0)
-#endif
+/* Search function to lookup a inferior by target 'pid'. */
+extern struct inferior *find_inferior_pid (int pid);
+/* Inferior iterator function.
-/* Are we in a call dummy? */
+ 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.
-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
+ It is safe to delete the iterated inferior from the callback. */
+extern struct inferior *iterate_over_inferiors (int (*) (struct inferior *,
+ void *),
+ void *);
-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
+/* Prints the list of inferiors and their details on UIOUT.
-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
+ If REQUESTED_INFERIOR is not -1, it's the GDB id of the inferior
+ that should be printed. Otherwise, all inferiors are printed. */
+extern void print_inferior (struct ui_out *uiout, int requested_inferior);
-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
+/* Returns true if the inferior list is not empty. */
+extern int have_inferiors (void);
-/* 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
+/* 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);
-/* 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