OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [gdb/] [linux-nat.h] - Blame information for rev 842

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 227 jeremybenn
/* Native debugging support for GNU/Linux (LWP layer).
2
 
3
   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
4
   2010 Free Software Foundation, Inc.
5
 
6
   This file is part of GDB.
7
 
8
   This program is free software; you can redistribute it and/or modify
9
   it under the terms of the GNU General Public License as published by
10
   the Free Software Foundation; either version 3 of the License, or
11
   (at your option) any later version.
12
 
13
   This program is distributed in the hope that it will be useful,
14
   but WITHOUT ANY WARRANTY; without even the implied warranty of
15
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
   GNU General Public License for more details.
17
 
18
   You should have received a copy of the GNU General Public License
19
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
 
21
#include "target.h"
22
 
23
#include <signal.h>
24
 
25
/* Structure describing an LWP.  This is public only for the purposes
26
   of ALL_LWPS; target-specific code should generally not access it
27
   directly.  */
28
 
29
struct lwp_info
30
{
31
  /* The process id of the LWP.  This is a combination of the LWP id
32
     and overall process id.  */
33
  ptid_t ptid;
34
 
35
  /* Non-zero if this LWP is cloned.  In this context "cloned" means
36
     that the LWP is reporting to its parent using a signal other than
37
     SIGCHLD.  */
38
  int cloned;
39
 
40
  /* Non-zero if we sent this LWP a SIGSTOP (but the LWP didn't report
41
     it back yet).  */
42
  int signalled;
43
 
44
  /* Non-zero if this LWP is stopped.  */
45
  int stopped;
46
 
47
  /* Non-zero if this LWP will be/has been resumed.  Note that an LWP
48
     can be marked both as stopped and resumed at the same time.  This
49
     happens if we try to resume an LWP that has a wait status
50
     pending.  We shouldn't let the LWP run until that wait status has
51
     been processed, but we should not report that wait status if GDB
52
     didn't try to let the LWP run.  */
53
  int resumed;
54
 
55
  /* If non-zero, a pending wait status.  */
56
  int status;
57
 
58
  /* Non-zero if we were stepping this LWP.  */
59
  int step;
60
 
61
  /* Non-zero si_signo if this LWP stopped with a trap.  si_addr may
62
     be the address of a hardware watchpoint.  */
63
  struct siginfo siginfo;
64
 
65
  /* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data
66
     watchpoint trap.  */
67
  int stopped_by_watchpoint;
68
 
69
  /* On architectures where it is possible to know the data address of
70
     a triggered watchpoint, STOPPED_DATA_ADDRESS_P is non-zero, and
71
     STOPPED_DATA_ADDRESS contains such data address.  Otherwise,
72
     STOPPED_DATA_ADDRESS_P is false, and STOPPED_DATA_ADDRESS is
73
     undefined.  Only valid if STOPPED_BY_WATCHPOINT is true.  */
74
  int stopped_data_address_p;
75
  CORE_ADDR stopped_data_address;
76
 
77
  /* Non-zero if we expect a duplicated SIGINT.  */
78
  int ignore_sigint;
79
 
80
  /* If WAITSTATUS->KIND != TARGET_WAITKIND_SPURIOUS, the waitstatus
81
     for this LWP's last event.  This may correspond to STATUS above,
82
     or to a local variable in lin_lwp_wait.  */
83
  struct target_waitstatus waitstatus;
84
 
85
  /* Signal wether we are in a SYSCALL_ENTRY or
86
     in a SYSCALL_RETURN event.
87
     Values:
88
     - TARGET_WAITKIND_SYSCALL_ENTRY
89
     - TARGET_WAITKIND_SYSCALL_RETURN */
90
  int syscall_state;
91
 
92
  /* The processor core this LWP was last seen on.  */
93
  int core;
94
 
95
  /* Next LWP in list.  */
96
  struct lwp_info *next;
97
};
98
 
99
/* The global list of LWPs, for ALL_LWPS.  Unlike the threads list,
100
   there is always at least one LWP on the list while the GNU/Linux
101
   native target is active.  */
102
extern struct lwp_info *lwp_list;
103
 
104
/* Iterate over the PTID each active thread (light-weight process).  There
105
   must be at least one.  */
106
#define ALL_LWPS(LP, PTID)                                              \
107
  for ((LP) = lwp_list, (PTID) = (LP)->ptid;                            \
108
       (LP) != NULL;                                                    \
109
       (LP) = (LP)->next, (PTID) = (LP) ? (LP)->ptid : (PTID))
110
 
111
#define GET_LWP(ptid)           ptid_get_lwp (ptid)
112
#define GET_PID(ptid)           ptid_get_pid (ptid)
113
#define is_lwp(ptid)            (GET_LWP (ptid) != 0)
114
#define BUILD_LWP(lwp, pid)     ptid_build (pid, lwp, 0)
115
 
116
/* Attempt to initialize libthread_db.  */
117
void check_for_thread_db (void);
118
 
119
int thread_db_attach_lwp (ptid_t ptid);
120
 
121
/* Find process PID's pending signal set from /proc/pid/status.  */
122
void linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigset_t *ignored);
123
 
124
/* Return the TGID of LWPID from /proc/pid/status.  Returns -1 if not
125
   found.  */
126
extern int linux_proc_get_tgid (int lwpid);
127
 
128
/* linux-nat functions for handling fork events.  */
129
extern void linux_enable_event_reporting (ptid_t ptid);
130
 
131
extern int lin_lwp_attach_lwp (ptid_t ptid);
132
 
133
/* Iterator function for lin-lwp's lwp list.  */
134
struct lwp_info *iterate_over_lwps (ptid_t filter,
135
                                    int (*callback) (struct lwp_info *,
136
                                                     void *),
137
                                    void *data);
138
 
139
/* Create a prototype generic GNU/Linux target.  The client can
140
   override it with local methods.  */
141
struct target_ops * linux_target (void);
142
 
143
/* Create a generic GNU/Linux target using traditional
144
   ptrace register access.  */
145
struct target_ops *
146
linux_trad_target (CORE_ADDR (*register_u_offset)(struct gdbarch *, int, int));
147
 
148
/* Register the customized GNU/Linux target.  This should be used
149
   instead of calling add_target directly.  */
150
void linux_nat_add_target (struct target_ops *);
151
 
152
/* Register a method to call whenever a new thread is attached.  */
153
void linux_nat_set_new_thread (struct target_ops *, void (*) (ptid_t));
154
 
155
/* Register a method that converts a siginfo object between the layout
156
   that ptrace returns, and the layout in the architecture of the
157
   inferior.  */
158
void linux_nat_set_siginfo_fixup (struct target_ops *,
159
                                  int (*) (struct siginfo *,
160
                                           gdb_byte *,
161
                                           int));
162
 
163
/* Update linux-nat internal state when changing from one fork
164
   to another.  */
165
void linux_nat_switch_fork (ptid_t new_ptid);
166
 
167
/* Return the saved siginfo associated with PTID.  */
168
struct siginfo *linux_nat_get_siginfo (ptid_t ptid);
169
 
170
/* Compute and return the processor core of a given thread.  */
171
int linux_nat_core_of_thread_1 (ptid_t ptid);

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.