/* 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
+ 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;
+
/* 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".
struct inferior_status;
-extern struct inferior_status *save_inferior_status PARAMS ((int));
+extern struct inferior_status *save_inferior_status (int);
-extern void restore_inferior_status PARAMS ((struct inferior_status *));
+extern void restore_inferior_status (struct inferior_status *);
-extern void discard_inferior_status PARAMS ((struct inferior_status *));
+extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
-extern void write_inferior_status_register PARAMS ((struct inferior_status * inf_status, int regno, LONGEST val));
+extern void discard_inferior_status (struct inferior_status *);
-/* 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. */
+extern void write_inferior_status_register (struct inferior_status
+ *inf_status, int regno,
+ LONGEST val);
-#ifndef ARCH_NUM_REGS
-#define ARCH_NUM_REGS NUM_REGS
-#endif
+/* 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);
-extern void set_sigint_trap PARAMS ((void));
+/* Fetch the pid (process id) component from a ptid. */
+int ptid_get_pid (ptid_t ptid);
-extern void clear_sigint_trap PARAMS ((void));
+/* Fetch the lwp (lightweight process) component from a ptid. */
+long ptid_get_lwp (ptid_t ptid);
-extern void set_sigio_trap PARAMS ((void));
+/* Fetch the tid (thread id) component from a ptid. */
+long ptid_get_tid (ptid_t ptid);
-extern void clear_sigio_trap PARAMS ((void));
+/* Compare two ptids to see if they are equal */
+extern int ptid_equal (ptid_t p1, ptid_t p2);
-/* File name for default use for standard in/out in the inferior. */
+/* 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 char *inferior_io_terminal;
+extern void set_sigint_trap (void);
-/* Pid of our debugged inferior, or 0 if no inferior now. */
+extern void clear_sigint_trap (void);
-extern int inferior_pid;
+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
redisplay the prompt until the execution is actually over. */
extern int sync_execution;
-/* This is only valid when inferior_pid 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
+/* 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"
/* 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 void clear_proceed_status PARAMS ((void));
-
-extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int));
-
-extern void kill_inferior PARAMS ((void));
-
-extern void generic_mourn_inferior PARAMS ((void));
+extern struct gdb_environ *inferior_environ;
-extern void terminal_ours PARAMS ((void));
+extern void clear_proceed_status (void);
-extern int run_stack_dummy PARAMS ((CORE_ADDR, char *));
+extern void proceed (CORE_ADDR, enum target_signal, int);
-extern CORE_ADDR read_pc PARAMS ((void));
+/* 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 CORE_ADDR read_pc_pid PARAMS ((int));
+extern void generic_mourn_inferior (void);
-extern CORE_ADDR generic_target_read_pc PARAMS ((int));
+extern void terminal_save_ours (void);
-extern void write_pc PARAMS ((CORE_ADDR));
+extern void terminal_ours (void);
-extern void write_pc_pid PARAMS ((CORE_ADDR, int));
+extern CORE_ADDR read_pc (void);
-extern void generic_target_write_pc PARAMS ((CORE_ADDR, int));
+extern CORE_ADDR read_pc_pid (ptid_t);
-extern CORE_ADDR read_sp PARAMS ((void));
+extern void write_pc (CORE_ADDR);
-extern CORE_ADDR generic_target_read_sp PARAMS ((void));
+extern void write_pc_pid (CORE_ADDR, ptid_t);
-extern void write_sp PARAMS ((CORE_ADDR));
+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 generic_target_write_sp PARAMS ((CORE_ADDR));
+extern void wait_for_inferior (int treat_exec_as_sigtrap);
-extern CORE_ADDR read_fp PARAMS ((void));
+extern void fetch_inferior_event (void *);
-extern CORE_ADDR generic_target_read_fp PARAMS ((void));
+extern void init_wait_for_inferior (void);
-extern void write_fp PARAMS ((CORE_ADDR));
+extern void close_exec_file (void);
-extern void generic_target_write_fp PARAMS ((CORE_ADDR));
-
-extern void wait_for_inferior PARAMS ((void));
-
-extern void fetch_inferior_event PARAMS ((void));
-
-extern void init_wait_for_inferior PARAMS ((void));
-
-extern void close_exec_file PARAMS ((void));
-
-extern void reopen_exec_file PARAMS ((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 PARAMS ((int, enum target_signal));
+extern void resume (int, enum target_signal);
/* From misc files */
-extern void store_inferior_registers PARAMS ((int));
-
-extern void fetch_inferior_registers PARAMS ((int));
+extern void default_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int all);
-extern void solib_create_inferior_hook PARAMS ((void));
+extern void child_terminal_info (char *, int);
-extern void child_terminal_info PARAMS ((char *, int));
+extern void term_info (char *, int);
-extern void term_info PARAMS ((char *, int));
+extern void terminal_ours_for_output (void);
-extern void terminal_ours_for_output PARAMS ((void));
+extern void terminal_inferior (void);
-extern void terminal_inferior PARAMS ((void));
+extern void terminal_init_inferior (void);
-extern void terminal_init_inferior PARAMS ((void));
+extern void terminal_init_inferior_with_pgrp (int pgrp);
-extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp));
-
-/* From infptrace.c or infttrace.c */
+/* From procfs.c */
-extern int attach PARAMS ((int));
+extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
-#if !defined(REQUIRE_ATTACH)
-#define REQUIRE_ATTACH attach
-#endif
+extern ptid_t procfs_first_available (void);
-#if !defined(REQUIRE_DETACH)
-#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
-#endif
+/* From fork-child.c */
-extern void detach PARAMS ((int));
+extern void fork_inferior (char *, char *, char **,
+ void (*)(void),
+ void (*)(int), void (*)(void), char *);
-/* PTRACE method of waiting for inferior process. */
-int ptrace_wait PARAMS ((int, int *));
-extern void child_resume PARAMS ((int, int, enum target_signal));
+extern void startup_inferior (int);
-#ifndef PTRACE_ARG3_TYPE
-#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
-#endif
+extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
-extern int call_ptrace PARAMS ((int, int, PTRACE_ARG3_TYPE, int));
+/* From inflow.c */
-extern void pre_fork_inferior PARAMS ((void));
+extern void new_tty_prefork (const char *);
-/* From procfs.c */
+extern int gdb_has_a_terminal (void);
-extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR)));
+/* From infrun.c */
-extern int procfs_first_available PARAMS ((void));
+extern void start_remote (int from_tty);
-extern int procfs_get_pid_fd PARAMS ((int));
+extern void normal_stop (void);
-/* From fork-child.c */
+extern int signal_stop_state (int);
-extern void fork_inferior PARAMS ((char *, char *, char **,
- void (*)(void),
- void (*)(int),
- void (*)(void),
- char *));
+extern int signal_print_state (int);
+extern int signal_pass_state (int);
-extern void
-clone_and_follow_inferior PARAMS ((int, int *));
+extern int signal_stop_update (int, int);
-extern void startup_inferior PARAMS ((int));
+extern int signal_print_update (int, int);
-/* From inflow.c */
+extern int signal_pass_update (int, int);
-extern void new_tty_prefork PARAMS ((char *));
+extern void get_last_target_status(ptid_t *ptid,
+ struct target_waitstatus *status);
-extern int gdb_has_a_terminal PARAMS ((void));
+extern void follow_inferior_reset_breakpoints (void);
-/* From infrun.c */
+/* From infcmd.c */
-extern void start_remote PARAMS ((void));
+extern void tty_command (char *, int);
-extern void normal_stop PARAMS ((void));
+extern void post_create_inferior (struct target_ops *, int);
-extern int signal_stop_state PARAMS ((int));
+extern void attach_command (char *, int);
-extern int signal_print_state PARAMS ((int));
+extern char *get_inferior_args (void);
-extern int signal_pass_state PARAMS ((int));
+extern char *set_inferior_args (char *);
-extern int signal_stop_update PARAMS ((int, int));
+extern void set_inferior_args_vector (int, char **);
-extern int signal_print_update PARAMS ((int, int));
+extern void registers_info (char *, int);
-extern int signal_pass_update PARAMS ((int, int));
+extern void nexti_command (char *, int);
-/* From infcmd.c */
+extern void stepi_command (char *, int);
-extern void tty_command PARAMS ((char *, int));
+extern void continue_command (char *, int);
-extern void attach_command PARAMS ((char *, int));
+extern void interrupt_target_command (char *args, int from_tty);
/* Last signal that the inferior received (why it stopped). */
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 CORE_ADDR step_frame_address;
-
-/* Our notion of the current stack pointer. */
-
-extern CORE_ADDR step_sp;
+extern struct frame_id step_frame_id;
/* 1 means step over all subroutine calls.
-1 means step over calls to undebuggable functions. */
-extern int step_over_calls;
+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
extern int step_multi;
-/* 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?). */
-
-extern int stop_soon_quietly;
+/* 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
+ };
+
+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. */
Thus this contains the return value from the called function (assuming
values are returned in a register). */
-extern char *stop_registers;
+extern struct regcache *stop_registers;
-/* Nonzero if the child process in inferior_pid was attached rather
+/* Nonzero if the child process in inferior_ptid was attached rather
than forked. */
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. */
+/* Possible values for gdbarch_call_dummy_location. */
#define ON_STACK 1
-#define BEFORE_TEXT_END 2
-#define AFTER_TEXT_END 3
#define AT_ENTRY_POINT 4
-
-#if !defined (USE_GENERIC_DUMMY_FRAMES)
-#define USE_GENERIC_DUMMY_FRAMES 0
-#endif
-
-#if !defined (CALL_DUMMY_LOCATION)
-#define CALL_DUMMY_LOCATION ON_STACK
-#endif /* No CALL_DUMMY_LOCATION. */
-
-#if !defined (CALL_DUMMY_ADDRESS)
-#define CALL_DUMMY_ADDRESS() (abort (), 0) /* anything to abort GDB */
-#endif
-#if !defined (CALL_DUMMY_START_OFFSET)
-#define CALL_DUMMY_START_OFFSET (abort (), 0) /* anything to abort GDB */
-#endif
-#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
-#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
-#define CALL_DUMMY_BREAKPOINT_OFFSET (abort (), 0) /* anything to abort GDB */
-#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 (abort (), 0) /* anything to abort GDB */
-#endif
-
-#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 (abort (), 0)
-#endif
-#if !defined (CALL_DUMMY_STACK_ADJUST_P)
-#define CALL_DUMMY_STACK_ADJUST_P (0)
-#endif
-
-#if !defined (CALL_DUMMY_P)
-#if defined (CALL_DUMMY)
-#define CALL_DUMMY_P 1
-#else
-#define CALL_DUMMY_P 0
-#endif
-#endif
-
-#if !defined (CALL_DUMMY_WORDS)
-#if defined (CALL_DUMMY)
-extern LONGEST call_dummy_words[];
-#define CALL_DUMMY_WORDS (call_dummy_words)
-#else
-#define CALL_DUMMY_WORDS (abort (), (void*) 0) /* anything to abort GDB */
-#endif
-#endif
-
-#if !defined (SIZEOF_CALL_DUMMY_WORDS)
-#if defined (CALL_DUMMY)
-extern int sizeof_call_dummy_words;
-#define SIZEOF_CALL_DUMMY_WORDS (sizeof_call_dummy_words)
-#else
-#define SIZEOF_CALL_DUMMY_WORDS (abort (), 0) /* anything to abort GDB */
-#endif
-#endif
-
-#if !defined PUSH_DUMMY_FRAME
-#define PUSH_DUMMY_FRAME (abort ())
-#endif
-
-#if !defined FIX_CALL_DUMMY
-#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (abort ())
-#endif
-
-#if !defined STORE_STRUCT_RETURN
-#define STORE_STRUCT_RETURN(a1,a2) (abort ())
-#endif
-
-
-/* Are we in a call dummy? */
-
-extern int pc_in_call_dummy_before_text_end PARAMS ((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
-
-extern int pc_in_call_dummy_after_text_end PARAMS ((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
-
-extern int pc_in_call_dummy_on_stack PARAMS ((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
-
-extern int pc_in_call_dummy_at_entry_point PARAMS ((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
-
-/* 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
+#define AT_SYMBOL 5
/* If STARTUP_WITH_SHELL is set, GDB's "run"
will attempts to start up the debugee under a shell.
projects / deliverable / binutils-gdb.git / blobdiff