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c906108c | 1 | /* Common things used by the various *gnu-nat.c files |
42a4f53d | 2 | Copyright (C) 1995-2019 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | Written by Miles Bader <miles@gnu.ai.mit.edu> |
c906108c | 5 | |
a9762ec7 JB |
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. | |
c906108c | 10 | |
a9762ec7 JB |
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. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 18 | |
1a5c2598 TT |
19 | #ifndef GNU_NAT_H |
20 | #define GNU_NAT_H | |
c906108c | 21 | |
cabb5f06 TS |
22 | #include "defs.h" |
23 | ||
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. */ | |
28 | extern "C" | |
29 | { | |
c906108c | 30 | #include <mach.h> |
cabb5f06 TS |
31 | } |
32 | #undef thread_info | |
33 | /* Divert 'mach_thread_info' to the original Mach 'thread_info' function. */ | |
34 | extern __typeof__ (mach_thread_info) mach_thread_info asm ("thread_info"); | |
35 | ||
36 | #include <unistd.h> | |
c906108c SS |
37 | |
38 | struct inf; | |
39 | ||
c289427b | 40 | extern struct inf *gnu_current_inf; |
c906108c SS |
41 | |
42 | /* Converts a GDB pid to a struct proc. */ | |
43 | struct proc *inf_tid_to_thread (struct inf *inf, int tid); | |
44 | ||
05db5edd ST |
45 | typedef void (inf_threads_ftype) (struct proc *thread, void *arg); |
46 | ||
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); | |
49 | ||
da59e081 JM |
50 | /* Makes sure that INF's thread list is synced with the actual process. */ |
51 | int inf_update_procs (struct inf *inf); | |
52 | ||
c906108c SS |
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). */ | |
55 | struct proc | |
c5aa993b JM |
56 | { |
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. */ | |
60 | ||
61 | mach_port_t saved_exc_port; /* The task/thread's real exception port. */ | |
62 | mach_port_t exc_port; /* Our replacement, which for. */ | |
63 | ||
64 | int sc; /* Desired suspend count. */ | |
65 | int cur_sc; /* Implemented suspend count. */ | |
0963b4bd MS |
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. */ | |
c5aa993b | 69 | int detach_sc; /* SC to leave around when detaching |
0963b4bd | 70 | from program. */ |
c906108c | 71 | |
0963b4bd MS |
72 | thread_state_data_t state; /* Registers, &c. */ |
73 | int state_valid:1; /* True if STATE is up to date. */ | |
c5aa993b | 74 | int state_changed:1; |
c906108c | 75 | |
c5aa993b | 76 | int aborted:1; /* True if thread_abort has been called. */ |
0963b4bd | 77 | int dead:1; /* We happen to know it's actually dead. */ |
c906108c | 78 | |
c5aa993b JM |
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 | |
81 | information. */ | |
82 | unsigned long fetched_regs; | |
c906108c | 83 | |
c5aa993b | 84 | struct inf *inf; /* Where we come from. */ |
c906108c | 85 | |
c5aa993b JM |
86 | struct proc *next; |
87 | }; | |
c906108c SS |
88 | |
89 | /* The task has a thread entry with this TID. */ | |
90 | #define PROC_TID_TASK (-1) | |
91 | ||
92 | #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK) | |
93 | #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK) | |
94 | ||
95 | extern int __proc_pid (struct proc *proc); | |
96 | ||
da59e081 JM |
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. */ | |
c906108c SS |
101 | extern thread_state_t proc_get_state (struct proc *proc, int will_modify); |
102 | ||
da59e081 JM |
103 | /* Return printable description of proc. */ |
104 | extern char *proc_string (struct proc *proc); | |
105 | ||
c906108c SS |
106 | #define proc_debug(_proc, msg, args...) \ |
107 | do { struct proc *__proc = (_proc); \ | |
a74ce742 | 108 | debug ("{proc %d/%d %s}: " msg, \ |
ccabeb57 | 109 | __proc_pid (__proc), __proc->tid, \ |
a74ce742 | 110 | host_address_to_string (__proc) , ##args); } while (0) |
c906108c | 111 | |
c906108c | 112 | extern int gnu_debug_flag; |
7a292a7a | 113 | |
c906108c SS |
114 | #define debug(msg, args...) \ |
115 | do { if (gnu_debug_flag) \ | |
0963b4bd MS |
116 | fprintf_unfiltered (gdb_stdlog, "%s:%d: " msg "\r\n", \ |
117 | __FILE__ , __LINE__ , ##args); } while (0) | |
c906108c | 118 | |
f6ac5f3d PA |
119 | /* A prototype generic GNU/Hurd target. The client can override it |
120 | with local methods. */ | |
121 | ||
122 | struct gnu_nat_target : public inf_child_target | |
123 | { | |
124 | void attach (const char *, int) override; | |
125 | bool attach_no_wait () override | |
126 | { return true; } | |
127 | ||
128 | void detach (inferior *, int) override; | |
129 | void resume (ptid_t, int, enum gdb_signal) override; | |
130 | ||
131 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
132 | enum target_xfer_status xfer_partial (enum target_object object, | |
133 | const char *annex, | |
134 | gdb_byte *readbuf, | |
135 | const gdb_byte *writebuf, | |
136 | ULONGEST offset, ULONGEST len, | |
137 | ULONGEST *xfered_len) override; | |
138 | ||
139 | int find_memory_regions (find_memory_region_ftype func, void *data) | |
140 | override; | |
141 | void kill () override; | |
142 | ||
143 | void create_inferior (const char *, const std::string &, | |
144 | char **, int) override; | |
145 | void mourn_inferior () override; | |
57810aa7 | 146 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
147 | const char *pid_to_str (ptid_t) override; |
148 | void stop (ptid_t) override; | |
149 | }; | |
b4d1e8c7 | 150 | |
1a5c2598 | 151 | #endif /* GNU_NAT_H */ |