1 /* Common things used by the various *gnu-nat.c files
2 Copyright (C) 1995-2019 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/>. */
24 /* Work around conflict between Mach's 'thread_info' function, and GDB's
25 'thread_info' class. Make the former available as 'mach_thread_info'. */
26 #define thread_info mach_thread_info
27 /* Mach headers are not yet ready for C++ compilation. */
33 /* Divert 'mach_thread_info' to the original Mach 'thread_info' function. */
34 extern __typeof__ (mach_thread_info
) mach_thread_info
asm ("thread_info");
40 extern struct inf
*gnu_current_inf
;
42 /* Converts a GDB pid to a struct proc. */
43 struct proc
*inf_tid_to_thread (struct inf
*inf
, int tid
);
45 typedef void (inf_threads_ftype
) (struct proc
*thread
, void *arg
);
47 /* Call F for every thread in inferior INF, passing ARG as second parameter. */
48 void inf_threads (struct inf
*inf
, inf_threads_ftype
*f
, void *arg
);
50 /* Makes sure that INF's thread list is synced with the actual process. */
51 int inf_update_procs (struct inf
*inf
);
53 /* A proc is either a thread, or the task (there can only be one task proc
54 because it always has the same TID, PROC_TID_TASK). */
57 thread_t port
; /* The task or thread port. */
58 int tid
; /* The GDB pid (actually a thread id). */
59 int num
; /* An id number for threads, to print. */
61 mach_port_t saved_exc_port
; /* The task/thread's real exception port. */
62 mach_port_t exc_port
; /* Our replacement, which for. */
64 int sc
; /* Desired suspend count. */
65 int cur_sc
; /* Implemented suspend count. */
66 int run_sc
; /* Default sc when the program is running. */
67 int pause_sc
; /* Default sc when gdb has control. */
68 int resume_sc
; /* Sc resulting from the last resume. */
69 int detach_sc
; /* SC to leave around when detaching
72 thread_state_data_t state
; /* Registers, &c. */
73 int state_valid
:1; /* True if STATE is up to date. */
76 int aborted
:1; /* True if thread_abort has been called. */
77 int dead
:1; /* We happen to know it's actually dead. */
79 /* Bit mask of registers fetched by gdb. This is used when we re-fetch
80 STATE after aborting the thread, to detect that gdb may have out-of-date
82 unsigned long fetched_regs
;
84 struct inf
*inf
; /* Where we come from. */
89 /* The task has a thread entry with this TID. */
90 #define PROC_TID_TASK (-1)
92 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
93 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
95 extern int __proc_pid (struct proc
*proc
);
97 /* Make sure that the state field in PROC is up to date, and return a
98 pointer to it, or 0 if something is wrong. If WILL_MODIFY is true,
99 makes sure that the thread is stopped and aborted first, and sets
100 the state_changed field in PROC to true. */
101 extern thread_state_t
proc_get_state (struct proc
*proc
, int will_modify
);
103 /* Return printable description of proc. */
104 extern char *proc_string (struct proc
*proc
);
106 #define proc_debug(_proc, msg, args...) \
107 do { struct proc *__proc = (_proc); \
108 debug ("{proc %d/%d %s}: " msg, \
109 __proc_pid (__proc), __proc->tid, \
110 host_address_to_string (__proc) , ##args); } while (0)
112 extern int gnu_debug_flag
;
114 #define debug(msg, args...) \
115 do { if (gnu_debug_flag) \
116 fprintf_unfiltered (gdb_stdlog, "%s:%d: " msg "\r\n", \
117 __FILE__ , __LINE__ , ##args); } while (0)
119 /* A prototype generic GNU/Hurd target. The client can override it
120 with local methods. */
122 struct gnu_nat_target
: public inf_child_target
124 void attach (const char *, int) override
;
125 bool attach_no_wait () override
128 void detach (inferior
*, int) override
;
129 void resume (ptid_t
, int, enum gdb_signal
) override
;
131 ptid_t
wait (ptid_t
, struct target_waitstatus
*, int) override
;
132 enum target_xfer_status
xfer_partial (enum target_object object
,
135 const gdb_byte
*writebuf
,
136 ULONGEST offset
, ULONGEST len
,
137 ULONGEST
*xfered_len
) override
;
139 int find_memory_regions (find_memory_region_ftype func
, void *data
)
141 void kill () override
;
143 void create_inferior (const char *, const std::string
&,
144 char **, int) override
;
145 void mourn_inferior () override
;
146 bool thread_alive (ptid_t ptid
) override
;
147 const char *pid_to_str (ptid_t
) override
;
148 void stop (ptid_t
) override
;
151 #endif /* GNU_NAT_H */