X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=gdb%2Finferior.h;h=9dc5ca302d47a007b0959798b639e77c44bcc07c;hb=5436304513349c5447b61f8b5ed6c38d77c5f0d9;hp=4ee958a90a34f9349b3c61f581afacae70603b87;hpb=6aba47ca06d9150c6196a374b745c2711b46e045;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/inferior.h b/gdb/inferior.h index 4ee958a90a..9dc5ca302d 100644 --- a/gdb/inferior.h +++ b/gdb/inferior.h @@ -2,14 +2,14 @@ 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 + 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, @@ -18,9 +18,7 @@ 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. */ + along with this program. If not, see . */ #if !defined (INFERIOR_H) #define INFERIOR_H 1 @@ -31,6 +29,7 @@ struct ui_file; struct type; struct gdbarch; struct regcache; +struct ui_out; /* For bpstat. */ #include "breakpoint.h" @@ -59,10 +58,6 @@ extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_sta 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; @@ -90,6 +85,9 @@ 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); +/* Return true if PTID represents a process id. */ +extern int ptid_is_pid (ptid_t ptid); + /* 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. */ @@ -99,10 +97,6 @@ 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); @@ -113,38 +107,11 @@ extern const char *get_inferior_io_terminal (void); 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; @@ -158,7 +125,12 @@ extern void proceed (CORE_ADDR, enum target_signal, int); over such function. */ extern int step_stop_if_no_debug; -extern void kill_inferior (void); +/* 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 generic_mourn_inferior (void); @@ -168,16 +140,8 @@ 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, @@ -187,7 +151,7 @@ extern CORE_ADDR signed_pointer_to_address (struct type *type, extern void address_to_signed_pointer (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 *); @@ -209,10 +173,6 @@ extern void default_print_registers_info (struct gdbarch *gdbarch, 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); @@ -225,25 +185,6 @@ 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)); @@ -252,9 +193,9 @@ 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 *); extern void startup_inferior (int); @@ -290,6 +231,12 @@ extern void get_last_target_status(ptid_t *ptid, 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); + /* From infcmd.c */ extern void tty_command (char *, int); @@ -310,31 +257,25 @@ extern void nexti_command (char *, int); extern void stepi_command (char *, int); +extern void continue_1 (int all_threads); + 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 void interrupt_target_1 (int all_threads); -extern enum target_signal stop_signal; +extern void detach_command (char *, int); /* 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; @@ -344,24 +285,6 @@ extern int stop_stack_dummy; 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. */ @@ -372,18 +295,12 @@ 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; - -/* 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?). */ +/* 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 @@ -407,29 +324,43 @@ enum stop_kind { NO_STOP_QUIETLY = 0, STOP_QUIETLY, + STOP_QUIETLY_REMOTE, 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, + EXEC_ERROR + }; -extern int proceed_to_finish; +extern enum exec_direction_kind 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. */ +/* True if we are debugging displaced stepping. */ +extern int debug_displaced; + +/* 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); + + +/* When set, normal_stop will not call the normal_stop observer. */ +extern int suppress_stop_observer; + +/* When set, no calls to target_resumed observer will be made. */ +extern int suppress_resume_observer; -extern int attach_flag; -/* Possible values for CALL_DUMMY_LOCATION. */ +/* Possible values for gdbarch_call_dummy_location. */ #define ON_STACK 1 #define AT_ENTRY_POINT 4 #define AT_SYMBOL 5 @@ -454,4 +385,116 @@ extern int attach_flag; #if !defined(START_INFERIOR_TRAPS_EXPECTED) #define START_INFERIOR_TRAPS_EXPECTED 2 #endif + +struct private_inferior; + +/* 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; + + /* See the definition of stop_kind above. */ + enum stop_kind stop_soon; + + /* Nonzero if this child process was attached rather than + forked. */ + int attach_flag; + + /* 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; +}; + +/* 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); + +/* 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); + +/* 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_inferior_id (int num); + +/* Search function to lookup a inferior by target 'pid'. */ +extern struct inferior *find_inferior_pid (int pid); + +/* 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 *); + +/* Prints the list of inferiors and their details on UIOUT. + + 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); + +/* Returns true if the inferior list is not empty. */ +extern int have_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); + #endif /* !defined (INFERIOR_H) */