1 /* Common things used by the various *gnu-nat.c files
2 Copyright (C) 1995-2018 Free Software Foundation, Inc.
4 Written by Miles Bader <miles@gnu.ai.mit.edu>
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.
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.
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/>. */
27 extern struct inf *gnu_current_inf;
29 /* Converts a GDB pid to a struct proc. */
30 struct proc *inf_tid_to_thread (struct inf *inf, int tid);
32 typedef void (inf_threads_ftype) (struct proc *thread, void *arg);
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);
37 /* Makes sure that INF's thread list is synced with the actual process. */
38 int inf_update_procs (struct inf *inf);
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). */
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. */
48 mach_port_t saved_exc_port; /* The task/thread's real exception port. */
49 mach_port_t exc_port; /* Our replacement, which for. */
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
59 thread_state_data_t state; /* Registers, &c. */
60 int state_valid:1; /* True if STATE is up to date. */
63 int aborted:1; /* True if thread_abort has been called. */
64 int dead:1; /* We happen to know it's actually dead. */
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67 STATE after aborting the thread, to detect that gdb may have out-of-date
69 unsigned long fetched_regs;
71 struct inf *inf; /* Where we come from. */
76 /* The task has a thread entry with this TID. */
77 #define PROC_TID_TASK (-1)
79 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
80 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
82 extern int __proc_pid (struct proc *proc);
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);
90 /* Return printable description of proc. */
91 extern char *proc_string (struct proc *proc);
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)
99 extern int gnu_debug_flag;
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)
106 /* A prototype generic GNU/Hurd target. The client can override it
107 with local methods. */
109 struct gnu_nat_target : public inf_child_target
111 void attach (const char *, int) override;
112 bool attach_no_wait () override
115 void detach (inferior *, int) override;
116 void resume (ptid_t, int, enum gdb_signal) override;
118 ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
119 enum target_xfer_status xfer_partial (enum target_object object,
122 const gdb_byte *writebuf,
123 ULONGEST offset, ULONGEST len,
124 ULONGEST *xfered_len) override;
126 int find_memory_regions (find_memory_region_ftype func, void *data)
128 void kill () override;
130 void create_inferior (const char *, const std::string &,
131 char **, int) override;
132 void mourn_inferior () override;
133 bool thread_alive (ptid_t ptid) override;
134 const char *pid_to_str (ptid_t) override;
135 void stop (ptid_t) override;
138 #endif /* __GNU_NAT_H__ */