Upgrade GDB from 7.4.1 to 7.6.1 on the vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / cli / cli-interp.c
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1/* CLI Definitions for GDB, the GNU debugger.
2
ef5ccd6c 3 Copyright (C) 2002-2013 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>. */
19
20#include "defs.h"
21#include "interps.h"
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22#include "event-top.h"
23#include "ui-out.h"
24#include "cli-out.h"
25#include "top.h" /* for "execute_command" */
26#include "gdb_string.h"
27#include "exceptions.h"
28
29struct ui_out *cli_uiout;
30
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31/* These are the ui_out and the interpreter for the console
32 interpreter. */
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33
34/* Longjmp-safe wrapper for "execute_command". */
35static struct gdb_exception safe_execute_command (struct ui_out *uiout,
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36 char *command,
37 int from_tty);
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38/* These implement the cli out interpreter: */
39
40static void *
a45ae5f8 41cli_interpreter_init (struct interp *self, int top_level)
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42{
43 return NULL;
44}
45
46static int
47cli_interpreter_resume (void *data)
48{
49 struct ui_file *stream;
50
51 /*sync_execution = 1; */
52
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53 /* gdb_setup_readline will change gdb_stdout. If the CLI was
54 previously writing to gdb_stdout, then set it to the new
55 gdb_stdout afterwards. */
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56
57 stream = cli_out_set_stream (cli_uiout, gdb_stdout);
58 if (stream != gdb_stdout)
59 {
60 cli_out_set_stream (cli_uiout, stream);
61 stream = NULL;
62 }
63
64 gdb_setup_readline ();
65
66 if (stream != NULL)
67 cli_out_set_stream (cli_uiout, gdb_stdout);
68
69 return 1;
70}
71
72static int
73cli_interpreter_suspend (void *data)
74{
75 gdb_disable_readline ();
76 return 1;
77}
78
79/* Don't display the prompt if we are set quiet. */
80static int
81cli_interpreter_display_prompt_p (void *data)
82{
83 if (interp_quiet_p (NULL))
84 return 0;
85 else
86 return 1;
87}
88
89static struct gdb_exception
90cli_interpreter_exec (void *data, const char *command_str)
91{
92 struct ui_file *old_stream;
93 struct gdb_exception result;
94
95 /* FIXME: cagney/2003-02-01: Need to const char *propogate
96 safe_execute_command. */
97 char *str = strcpy (alloca (strlen (command_str) + 1), command_str);
98
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99 /* gdb_stdout could change between the time cli_uiout was
100 initialized and now. Since we're probably using a different
101 interpreter which has a new ui_file for gdb_stdout, use that one
102 instead of the default.
5796c8dc 103
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104 It is important that it gets reset everytime, since the user
105 could set gdb to use a different interpreter. */
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106 old_stream = cli_out_set_stream (cli_uiout, gdb_stdout);
107 result = safe_execute_command (cli_uiout, str, 1);
108 cli_out_set_stream (cli_uiout, old_stream);
109 return result;
110}
111
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112static struct gdb_exception
113safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty)
5796c8dc 114{
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115 volatile struct gdb_exception e;
116 struct ui_out *saved_uiout;
cf7f2e2d 117
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118 /* Save and override the global ``struct ui_out'' builder. */
119 saved_uiout = current_uiout;
120 current_uiout = command_uiout;
5796c8dc 121
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122 TRY_CATCH (e, RETURN_MASK_ALL)
123 {
124 execute_command (command, from_tty);
125 }
126
127 /* Restore the global builder. */
128 current_uiout = saved_uiout;
cf7f2e2d 129
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130 /* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the
131 caller should print the exception. */
132 exception_print (gdb_stderr, e);
133 return e;
134}
135
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136static struct ui_out *
137cli_ui_out (struct interp *self)
138{
139 return cli_uiout;
140}
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141
142/* Standard gdb initialization hook. */
143extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */
144
145void
146_initialize_cli_interp (void)
147{
148 static const struct interp_procs procs = {
149 cli_interpreter_init, /* init_proc */
150 cli_interpreter_resume, /* resume_proc */
151 cli_interpreter_suspend, /* suspend_proc */
152 cli_interpreter_exec, /* exec_proc */
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153 cli_interpreter_display_prompt_p, /* prompt_proc_p */
154 cli_ui_out /* ui_out_proc */
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155 };
156 struct interp *cli_interp;
157
158 /* Create a default uiout builder for the CLI. */
159 cli_uiout = cli_out_new (gdb_stdout);
a45ae5f8 160 cli_interp = interp_new (INTERP_CONSOLE, &procs);
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161
162 interp_add (cli_interp);
163}