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/tmp/gdb-7.10/gdb/gnu-nat.h
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1 /* Common things used by the various *gnu-nat.c files
2  Copyright (C) 1995-2015 Free Software Foundation, Inc.
3 
4  Written by Miles Bader <miles@gnu.ai.mit.edu>
5 
6  This program is free software; you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation; either version 3 of the License, or
9  (at your option) any later version.
10 
11  This program is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  GNU General Public License for more details.
15 
16  You should have received a copy of the GNU General Public License
17  along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 
19 #ifndef __GNU_NAT_H__
20 #define __GNU_NAT_H__
21 
22 #include <unistd.h>
23 #include <mach.h>
24 
25 struct inf;
26 
27 extern struct inf *gnu_current_inf;
28 
29 /* Converts a GDB pid to a struct proc. */
30 struct proc *inf_tid_to_thread (struct inf *inf, int tid);
31 
32 typedef void (inf_threads_ftype) (struct proc *thread, void *arg);
33 
34 /* Call F for every thread in inferior INF, passing ARG as second parameter. */
35 void inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg);
36 
37 /* Makes sure that INF's thread list is synced with the actual process. */
38 int inf_update_procs (struct inf *inf);
39 
40 /* A proc is either a thread, or the task (there can only be one task proc
41  because it always has the same TID, PROC_TID_TASK). */
42 struct proc
43  {
44  thread_t port; /* The task or thread port. */
45  int tid; /* The GDB pid (actually a thread id). */
46  int num; /* An id number for threads, to print. */
47 
48  mach_port_t saved_exc_port; /* The task/thread's real exception port. */
49  mach_port_t exc_port; /* Our replacement, which for. */
50 
51  int sc; /* Desired suspend count. */
52  int cur_sc; /* Implemented suspend count. */
53  int run_sc; /* Default sc when the program is running. */
54  int pause_sc; /* Default sc when gdb has control. */
55  int resume_sc; /* Sc resulting from the last resume. */
56  int detach_sc; /* SC to leave around when detaching
57  from program. */
58 
59  thread_state_data_t state; /* Registers, &c. */
60  int state_valid:1; /* True if STATE is up to date. */
62 
63  int aborted:1; /* True if thread_abort has been called. */
64  int dead:1; /* We happen to know it's actually dead. */
65 
66  /* Bit mask of registers fetched by gdb. This is used when we re-fetch
67  STATE after aborting the thread, to detect that gdb may have out-of-date
68  information. */
69  unsigned long fetched_regs;
70 
71  struct inf *inf; /* Where we come from. */
72 
73  struct proc *next;
74  };
75 
76 /* The task has a thread entry with this TID. */
77 #define PROC_TID_TASK (-1)
78 
79 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
80 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
81 
82 extern int __proc_pid (struct proc *proc);
83 
84 /* Make sure that the state field in PROC is up to date, and return a
85  pointer to it, or 0 if something is wrong. If WILL_MODIFY is true,
86  makes sure that the thread is stopped and aborted first, and sets
87  the state_changed field in PROC to true. */
88 extern thread_state_t proc_get_state (struct proc *proc, int will_modify);
89 
90 /* Return printable description of proc. */
91 extern char *proc_string (struct proc *proc);
92 
93 #define proc_debug(_proc, msg, args...) \
94  do { struct proc *__proc = (_proc); \
95  debug ("{proc %d/%d %s}: " msg, \
96  __proc_pid (__proc), __proc->tid, \
97  host_address_to_string (__proc) , ##args); } while (0)
98 
99 extern int gnu_debug_flag;
100 
101 #define debug(msg, args...) \
102  do { if (gnu_debug_flag) \
103  fprintf_unfiltered (gdb_stdlog, "%s:%d: " msg "\r\n", \
104  __FILE__ , __LINE__ , ##args); } while (0)
105 
106 /* Create a prototype generic GNU/Hurd target. The client can
107  override it with local methods. */
108 struct target_ops *gnu_target (void);
109 
110 #endif /* __GNU_NAT_H__ */
int pause_sc
Definition: gnu-nat.h:54
int inf_update_procs(struct inf *inf)
Definition: gnu-nat.c:1118
thread_t port
Definition: gnu-nat.h:44
unsigned long fetched_regs
Definition: gnu-nat.h:69
void( inf_threads_ftype)(struct proc *thread, void *arg)
Definition: gnu-nat.h:32
int cur_sc
Definition: gnu-nat.h:52
struct inf * inf
Definition: gnu-nat.h:71
int gnu_debug_flag
Definition: gnu-nat.c:82
thread_state_t proc_get_state(struct proc *proc, int will_modify)
Definition: gnu-nat.c:354
struct proc * inf_tid_to_thread(struct inf *inf, int tid)
Definition: gnu-nat.c:962
Definition: gnu-nat.h:42
int run_sc
Definition: gnu-nat.h:53
int tid
Definition: gnu-nat.h:45
thread_state_data_t state
Definition: gnu-nat.h:59
int resume_sc
Definition: gnu-nat.h:55
struct proc * next
Definition: gnu-nat.h:73
Definition: gnu-nat.c:163
int __proc_pid(struct proc *proc)
Definition: gnu-nat.c:242
mach_port_t saved_exc_port
Definition: gnu-nat.h:48
struct inf * gnu_current_inf
Definition: gnu-nat.c:1446
struct target_ops * gnu_target(void)
Definition: gnu-nat.c:2672
pthread_t thread_t
mach_port_t exc_port
Definition: gnu-nat.h:49
int num
Definition: gnu-nat.h:46
char * proc_string(struct proc *proc)
Definition: gnu-nat.c:2637
int state_changed
Definition: gnu-nat.h:61
void inf_threads(struct inf *inf, inf_threads_ftype *f, void *arg)
Definition: gnu-nat.c:991
int sc
Definition: gnu-nat.h:51
int aborted
Definition: gnu-nat.h:63
int state_valid
Definition: gnu-nat.h:60
int detach_sc
Definition: gnu-nat.h:56
int dead
Definition: gnu-nat.h:64