OpenCores
URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [gdb-5.3/] [gdb/] [inf-loop.c] - Blame information for rev 1765

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 1181 sfurman
/* Handling of inferior events for the event loop for GDB, the GNU debugger.
2
   Copyright 1999 Free Software Foundation, Inc.
3
   Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
4
 
5
   This file is part of GDB.
6
 
7
   This program is free software; you can redistribute it and/or modify
8
   it under the terms of the GNU General Public License as published by
9
   the Free Software Foundation; either version 2 of the License, or
10
   (at your option) any later version.
11
 
12
   This program is distributed in the hope that it will be useful,
13
   but WITHOUT ANY WARRANTY; without even the implied warranty of
14
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
   GNU General Public License for more details.
16
 
17
   You should have received a copy of the GNU General Public License
18
   along with this program; if not, write to the Free Software
19
   Foundation, Inc., 59 Temple Place - Suite 330,
20
   Boston, MA 02111-1307, USA. */
21
 
22
#include "defs.h"
23
#include "inferior.h"           /* For fetch_inferior_event. */
24
#include "target.h"             /* For enum inferior_event_type. */
25
#include "event-loop.h"
26
#include "event-top.h"
27
#include "inf-loop.h"
28
#include "remote.h"
29
 
30
static int fetch_inferior_event_wrapper (gdb_client_data client_data);
31
static void complete_execution (void);
32
 
33
void
34
inferior_event_handler_wrapper (gdb_client_data client_data)
35
{
36
  inferior_event_handler (INF_QUIT_REQ, client_data);
37
}
38
 
39
/* General function to handle events in the inferior. So far it just
40
   takes care of detecting errors reported by select() or poll(),
41
   otherwise it assumes that all is OK, and goes on reading data from
42
   the fd. This however may not always be what we want to do. */
43
void
44
inferior_event_handler (enum inferior_event_type event_type,
45
                        gdb_client_data client_data)
46
{
47
  switch (event_type)
48
    {
49
    case INF_ERROR:
50
      printf_unfiltered ("error detected from target.\n");
51
      target_async (NULL, 0);
52
      pop_target ();
53
      discard_all_continuations ();
54
      do_exec_error_cleanups (ALL_CLEANUPS);
55
      break;
56
 
57
    case INF_REG_EVENT:
58
      /* Use catch errors for now, until the inner layers of
59
         fetch_inferior_event (i.e. readchar) can return meaningful
60
         error status.  If an error occurs while getting an event from
61
         the target, just get rid of the target. */
62
      if (!catch_errors (fetch_inferior_event_wrapper,
63
                         client_data, "", RETURN_MASK_ALL))
64
        {
65
          target_async (NULL, 0);
66
          pop_target ();
67
          discard_all_continuations ();
68
          do_exec_error_cleanups (ALL_CLEANUPS);
69
          display_gdb_prompt (0);
70
        }
71
      break;
72
 
73
    case INF_EXEC_COMPLETE:
74
      /* Is there anything left to do for the command issued to
75
         complete? */
76
      do_all_continuations ();
77
      /* Reset things after target has stopped for the async commands. */
78
      complete_execution ();
79
      break;
80
 
81
    case INF_EXEC_CONTINUE:
82
      /* Is there anything left to do for the command issued to
83
         complete? */
84
      do_all_intermediate_continuations ();
85
      break;
86
 
87
    case INF_QUIT_REQ:
88
      /* FIXME: ezannoni 1999-10-04. This call should really be a
89
         target vector entry, so that it can be used for any kind of
90
         targets. */
91
      async_remote_interrupt_twice (NULL);
92
      break;
93
 
94
    case INF_TIMER:
95
    default:
96
      printf_unfiltered ("Event type not recognized.\n");
97
      break;
98
    }
99
}
100
 
101
static int
102
fetch_inferior_event_wrapper (gdb_client_data client_data)
103
{
104
  fetch_inferior_event (client_data);
105
  return 1;
106
}
107
 
108
/* Reset proper settings after an asynchronous command has finished.
109
   If the execution command was in synchronous mode, register stdin
110
   with the event loop, and reset the prompt. */
111
 
112
static void
113
complete_execution (void)
114
{
115
  target_executing = 0;
116
 
117
  /* Unregister the inferior from the event loop. This is done so that
118
     when the inferior is not running we don't get distracted by
119
     spurious inferior output. */
120
  target_async (NULL, 0);
121
 
122
  if (sync_execution)
123
    {
124
      do_exec_error_cleanups (ALL_CLEANUPS);
125
      display_gdb_prompt (0);
126
    }
127
  else
128
    {
129
      if (exec_done_display_p)
130
        printf_unfiltered ("completed.\n");
131
    }
132
}

powered by: WebSVN 2.1.0

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