| /* 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 |
| 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 |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #if !defined (INFERIOR_H) |
| #define INFERIOR_H 1 |
| |
| struct target_waitstatus; |
| struct frame_info; |
| struct ui_file; |
| struct type; |
| struct gdbarch; |
| struct regcache; |
| |
| /* For bpstat. */ |
| #include "breakpoint.h" |
| |
| /* For enum target_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); |
| |
| /* 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; |
| |
| /* The null or zero ptid, often used to indicate no process. */ |
| extern ptid_t null_ptid; |
| |
| /* 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); |
| |
| /* Find/Create a ptid from just a pid. */ |
| ptid_t pid_to_ptid (int pid); |
| |
| /* Fetch the pid (process id) component from a ptid. */ |
| int ptid_get_pid (ptid_t ptid); |
| |
| /* Fetch the lwp (lightweight process) component from a ptid. */ |
| long ptid_get_lwp (ptid_t ptid); |
| |
| /* Fetch the tid (thread id) component from a ptid. */ |
| long ptid_get_tid (ptid_t ptid); |
| |
| /* Compare two ptids to see if they are equal */ |
| extern int ptid_equal (ptid_t p1, ptid_t p2); |
| |
| /* 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. */ |
| |
| 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. */ |
| |
| extern ptid_t inferior_ptid; |
| |
| /* Is the inferior running right now, as a result of a 'run&', |
| 'continue&' etc command? This is used in asycn gdb to determine |
| whether a command that the user enters while the target is running |
| is allowed or not. */ |
| extern int target_executing; |
| |
| /* Are we simulating synchronous execution? This is used in async gdb |
| to implement the 'run', 'continue' etc commands, which will not |
| redisplay the prompt until the execution is actually over. */ |
| extern int sync_execution; |
| |
| /* This is only valid when inferior_ptid is non-zero. |
| |
| If this is 0, then exec events should be noticed and responded to |
| by the debugger (i.e., be reported to the user). |
| |
| If this is > 0, then that many subsequent exec events should be |
| ignored (i.e., not be reported to the user). |
| */ |
| extern int inferior_ignoring_startup_exec_events; |
| |
| /* This is only valid when inferior_ignoring_startup_exec_events is |
| zero. |
| |
| Some targets (stupidly) report more than one exec event per actual |
| call to an event() system call. If only the last such exec event |
| need actually be noticed and responded to by the debugger (i.e., |
| be reported to the user), then this is the number of "leading" |
| exec events which should be ignored. |
| */ |
| extern int inferior_ignoring_leading_exec_events; |
| |
| /* Inferior environment. */ |
| |
| extern struct gdb_environ *inferior_environ; |
| |
| extern void clear_proceed_status (void); |
| |
| extern void proceed (CORE_ADDR, enum target_signal, int); |
| |
| /* When set, stop the 'step' command if we enter a function which has |
| no line number information. The normal behavior is that we step |
| over such function. */ |
| extern int step_stop_if_no_debug; |
| |
| extern void kill_inferior (void); |
| |
| extern void generic_mourn_inferior (void); |
| |
| extern void terminal_save_ours (void); |
| |
| extern void terminal_ours (void); |
| |
| extern CORE_ADDR read_pc (void); |
| |
| extern CORE_ADDR read_pc_pid (ptid_t); |
| |
| extern void write_pc (CORE_ADDR); |
| |
| extern void write_pc_pid (CORE_ADDR, ptid_t); |
| |
| extern void generic_target_write_pc (CORE_ADDR, ptid_t); |
| |
| extern CORE_ADDR read_sp (void); |
| |
| extern CORE_ADDR unsigned_pointer_to_address (struct type *type, |
| const gdb_byte *buf); |
| extern void unsigned_address_to_pointer (struct type *type, gdb_byte *buf, |
| CORE_ADDR addr); |
| extern CORE_ADDR signed_pointer_to_address (struct type *type, |
| const gdb_byte *buf); |
| extern void address_to_signed_pointer (struct type *type, gdb_byte *buf, |
| CORE_ADDR addr); |
| |
| extern void wait_for_inferior (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); |
| |
| /* From misc files */ |
| |
| extern void default_print_registers_info (struct gdbarch *gdbarch, |
| struct ui_file *file, |
| struct frame_info *frame, |
| int regnum, int all); |
| |
| extern void store_inferior_registers (int); |
| |
| extern void fetch_inferior_registers (int); |
| |
| extern void child_terminal_info (char *, int); |
| |
| extern void term_info (char *, int); |
| |
| extern void terminal_ours_for_output (void); |
| |
| extern void terminal_inferior (void); |
| |
| extern void terminal_init_inferior (void); |
| |
| extern void terminal_init_inferior_with_pgrp (int pgrp); |
| |
| /* From infptrace.c or infttrace.c */ |
| |
| extern int attach (int); |
| |
| extern void detach (int); |
| |
| /* PTRACE method of waiting for inferior process. */ |
| int ptrace_wait (ptid_t, int *); |
| |
| extern void child_resume (ptid_t, int, enum target_signal); |
| |
| #ifndef PTRACE_ARG3_TYPE |
| #define PTRACE_ARG3_TYPE PTRACE_TYPE_ARG3 |
| #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 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 void startup_inferior (int); |
| |
| extern char *construct_inferior_arguments (struct gdbarch *, int, char **); |
| |
| /* From inflow.c */ |
| |
| extern void new_tty_prefork (const char *); |
| |
| extern int gdb_has_a_terminal (void); |
| |
| /* From infrun.c */ |
| |
| extern void start_remote (void); |
| |
| extern void normal_stop (void); |
| |
| extern int signal_stop_state (int); |
| |
| extern int signal_print_state (int); |
| |
| extern int signal_pass_state (int); |
| |
| extern int signal_stop_update (int, int); |
| |
| extern int signal_print_update (int, int); |
| |
| 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); |
| |
| /* From infcmd.c */ |
| |
| extern void tty_command (char *, int); |
| |
| extern void post_create_inferior (struct target_ops *, int); |
| |
| extern void attach_command (char *, int); |
| |
| extern char *get_inferior_args (void); |
| |
| extern char *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 stepi_command (char *, int); |
| |
| extern void continue_command (char *, int); |
| |
| extern void interrupt_target_command (char *args, int from_tty); |
| |
| /* Last signal that the inferior received (why it stopped). */ |
| |
| extern enum target_signal stop_signal; |
| |
| /* Address at which inferior stopped. */ |
| |
| extern CORE_ADDR stop_pc; |
| |
| /* Chain containing status of breakpoint(s) that we have stopped at. */ |
| |
| extern bpstat stop_bpstat; |
| |
| /* Flag indicating that a command has proceeded the inferior past the |
| current breakpoint. */ |
| |
| extern int breakpoint_proceeded; |
| |
| /* Nonzero if stopped due to a step command. */ |
| |
| extern int stop_step; |
| |
| /* Nonzero if stopped due to completion of a stack dummy routine. */ |
| |
| extern int 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. */ |
| |
| enum step_over_calls_kind |
| { |
| STEP_OVER_NONE, |
| STEP_OVER_ALL, |
| 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; |
| |
| /* Nonzero means expecting a trap and caller will handle it |
| themselves. It is used when running in the shell before the child |
| program has been exec'd; and when running some kinds of remote |
| stuff (FIXME?). */ |
| |
| /* 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_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. */ |
| |
| extern int proceed_to_finish; |
| |
| /* Save register contents here when about to pop a stack dummy frame, |
| if-and-only-if proceed_to_finish is set. |
| Thus this contains the return value from the called function (assuming |
| values are returned in a register). */ |
| |
| extern struct regcache *stop_registers; |
| |
| /* Nonzero if the child process in inferior_ptid was attached rather |
| than forked. */ |
| |
| extern int attach_flag; |
| |
| /* Possible values for 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 |
| #if !defined(START_INFERIOR_TRAPS_EXPECTED) |
| #define START_INFERIOR_TRAPS_EXPECTED 2 |
| #endif |
| #endif /* !defined (INFERIOR_H) */ |