/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright (C) 1986, 1988-1996, 1998-2001, 2003-2012 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2014 Free Software Foundation, Inc.
This file is part of GDB.
struct regcache;
struct ui_out;
struct terminal_info;
+struct target_desc_info;
#include "ptid.h"
#include "frame.h"
#include "progspace.h"
+#include "registry.h"
struct infcall_suspend_state;
struct infcall_control_state;
extern struct regcache *
get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
-/* 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. */
-
-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 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. */
+ no inferior, ptid_get_pid (inferior_ptid) will be 0. */
extern ptid_t inferior_ptid;
are kept running freely. */
extern int non_stop;
-/* 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;
-
/* 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 void generic_mourn_inferior (void);
-extern void terminal_save_ours (void);
-
-extern void terminal_ours (void);
-
extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch,
struct type *type,
const gdb_byte *buf);
struct frame_info *frame,
int regnum, int all);
-extern void child_terminal_info (char *, int);
+extern void child_terminal_info (struct target_ops *self, const char *, int);
extern void term_info (char *, int);
-extern void terminal_ours_for_output (void);
+extern void child_terminal_save_ours (struct target_ops *self);
-extern void terminal_inferior (void);
+extern void child_terminal_ours (struct target_ops *self);
-extern void terminal_init_inferior (void);
+extern void child_terminal_ours_for_output (struct target_ops *self);
-extern void terminal_init_inferior_with_pgrp (int pgrp);
+extern void child_terminal_inferior (struct target_ops *self);
+
+extern void child_terminal_init (struct target_ops *self);
+
+extern void child_terminal_init_with_pgrp (int pgrp);
/* From fork-child.c */
/* From infrun.c */
-extern int debug_infrun;
+extern unsigned int debug_infrun;
extern int stop_on_solib_events;
extern void normal_stop (void);
+extern void print_stop_event (struct target_waitstatus *ws);
+
extern int signal_stop_state (int);
extern int signal_print_state (int);
extern void follow_inferior_reset_breakpoints (void);
-/* Throw an error indicating the current thread is running. */
-extern void error_is_running (void);
+void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
-/* Calls error_is_running if the current thread is running. */
-extern void ensure_not_running (void);
+/* Clear the convenience variables associated with the exit of the
+ inferior. Currently, those variables are $_exitcode and
+ $_exitsignal. */
-void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
+extern void clear_exit_convenience_vars (void);
+
+/* Returns true if we're trying to step past the instruction at
+ ADDRESS in ASPACE. */
+
+extern int stepping_past_instruction_at (struct address_space *aspace,
+ CORE_ADDR address);
/* From infcmd.c */
extern void registers_info (char *, int);
-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);
-
extern void interrupt_target_1 (int all_threads);
extern void delete_longjmp_breakpoint_cleanup (void *arg);
extern struct value *get_return_value (struct value *function,
struct type *value_type);
+/* Whether to start up the debuggee under a shell.
+
+ If startup-with-shell is set, GDB's "run" will attempt to start up
+ the debuggee 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 may be handy to bypass the shell
+ in some cases. To disable this feature, do "set startup-with-shell
+ false".
+
+ The catch-exec traps expected during start-up will be one more if
+ the target is started up with a shell. */
+extern int startup_with_shell;
+
/* Address at which inferior stopped. */
extern CORE_ADDR stop_pc;
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.
-
+/* STOP_QUIETLY_NO_SIGSTOP is used to handle a tricky situation with attach.
+ 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. */
#define ON_STACK 1
#define AT_ENTRY_POINT 4
-/* 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
+/* Number of traps that happen between exec'ing the shell to run an
+ inferior and when we finally get to the inferior code, not counting
+ the exec for the shell. This is 1 on most implementations.
+ Overridden in nm.h files. */
#if !defined(START_INFERIOR_TRAPS_EXPECTED)
-#define START_INFERIOR_TRAPS_EXPECTED 2
+#define START_INFERIOR_TRAPS_EXPECTED 1
#endif
struct private_inferior;
Inferior thread counterpart is `struct thread_suspend_state'. */
+#if 0 /* Currently unused and empty structures are not valid C. */
struct inferior_suspend_state
{
};
+#endif
/* GDB represents the state of each program execution with an object
called an inferior. An inferior typically corresponds to a process
/* State of inferior process to restore after GDB is done with an inferior
call. See `struct inferior_suspend_state'. */
+#if 0 /* Currently unused and empty structures are not valid C. */
struct inferior_suspend_state suspend;
+#endif
/* True if this was an auto-created inferior, e.g. created from
following a fork; false, if this inferior was manually added by
from enum symfile_add_flags. */
int symfile_flags;
+ /* Info about an inferior's target description (if it's fetched; the
+ user supplied description's filename, if any; etc.). */
+ struct target_desc_info *tdesc_info;
+
+ /* The architecture associated with the inferior through the
+ connection to the target.
+
+ The architecture vector provides some information that is really
+ a property of the inferior, accessed through a particular target:
+ ptrace operations; the layout of certain RSP packets; the
+ solib_ops vector; etc. To differentiate architecture accesses to
+ per-inferior/target properties from
+ per-thread/per-frame/per-objfile properties, accesses to
+ per-inferior/target properties should be made through
+ this gdbarch. */
+ struct gdbarch *gdbarch;
+
/* Per inferior data-pointers required by other GDB modules. */
- void **data;
- unsigned num_data;
+ REGISTRY_FIELDS;
};
/* Keep a registry of per-inferior data-pointers required by other GDB
modules. */
-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);
+DECLARE_REGISTRY (inferior);
/* Create an empty inferior list, or empty the existing one. */
extern void init_inferior_list (void);
extern void update_signals_program_target (void);
+extern void signal_catch_update (const unsigned int *);
+
/* In some circumstances we allow a command to specify a numeric
signal. The idea is to keep these circumstances limited so that
users (and scripts) develop portable habits. For comparison,
projects / deliverable / binutils-gdb.git / blobdiff