[PATCH 30/57][Arm][GAS] Add support for MVE instructions: vqmovnt, vqmovnb, vqmovunt...
[binutils-gdb.git] / gdb / exceptions.c
blobebdc71d98d40af59b086fceb4bccbc3bc710b3df
1 /* Exception (throw catch) mechanism, for GDB, the GNU debugger.
3 Copyright (C) 1986-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
20 #include "defs.h"
21 #include "exceptions.h"
22 #include "breakpoint.h"
23 #include "target.h"
24 #include "inferior.h"
25 #include "annotate.h"
26 #include "ui-out.h"
27 #include "serial.h"
28 #include "gdbthread.h"
29 #include "top.h"
30 #include "common/gdb_optional.h"
32 static void
33 print_flush (void)
35 struct ui *ui = current_ui;
36 struct serial *gdb_stdout_serial;
38 if (deprecated_error_begin_hook)
39 deprecated_error_begin_hook ();
41 gdb::optional<target_terminal::scoped_restore_terminal_state> term_state;
42 /* While normally there's always something pushed on the target
43 stack, the NULL check is needed here because we can get here very
44 early during startup, before the target stack is first
45 initialized. */
46 if (current_top_target () != NULL && target_supports_terminal_ours ())
48 term_state.emplace ();
49 target_terminal::ours_for_output ();
52 /* We want all output to appear now, before we print the error. We
53 have 3 levels of buffering we have to flush (it's possible that
54 some of these should be changed to flush the lower-level ones
55 too): */
57 /* 1. The _filtered buffer. */
58 if (filtered_printing_initialized ())
59 wrap_here ("");
61 /* 2. The stdio buffer. */
62 gdb_flush (gdb_stdout);
63 gdb_flush (gdb_stderr);
65 /* 3. The system-level buffer. */
66 gdb_stdout_serial = serial_fdopen (fileno (ui->outstream));
67 if (gdb_stdout_serial)
69 serial_drain_output (gdb_stdout_serial);
70 serial_un_fdopen (gdb_stdout_serial);
73 annotate_error_begin ();
76 static void
77 print_exception (struct ui_file *file, const struct gdb_exception &e)
79 /* KLUGE: cagney/2005-01-13: Write the string out one line at a time
80 as that way the MI's behavior is preserved. */
81 const char *start;
82 const char *end;
84 for (start = e.what (); start != NULL; start = end)
86 end = strchr (start, '\n');
87 if (end == NULL)
88 fputs_filtered (start, file);
89 else
91 end++;
92 ui_file_write (file, start, end - start);
95 fprintf_filtered (file, "\n");
97 /* Now append the annotation. */
98 switch (e.reason)
100 case RETURN_QUIT:
101 annotate_quit ();
102 break;
103 case RETURN_ERROR:
104 /* Assume that these are all errors. */
105 annotate_error ();
106 break;
107 default:
108 internal_error (__FILE__, __LINE__, _("Bad switch."));
112 void
113 exception_print (struct ui_file *file, const struct gdb_exception &e)
115 if (e.reason < 0 && e.message != NULL)
117 print_flush ();
118 print_exception (file, e);
122 void
123 exception_fprintf (struct ui_file *file, const struct gdb_exception &e,
124 const char *prefix, ...)
126 if (e.reason < 0 && e.message != NULL)
128 va_list args;
130 print_flush ();
132 /* Print the prefix. */
133 va_start (args, prefix);
134 vfprintf_filtered (file, prefix, args);
135 va_end (args);
137 print_exception (file, e);
141 /* See exceptions.h. */
144 exception_print_same (const struct gdb_exception &e1,
145 const struct gdb_exception &e2)
147 const char *msg1 = e1.message == nullptr ? "" : e1.what ();
148 const char *msg2 = e2.message == nullptr ? "" : e2.what ();
150 return (e1.reason == e2.reason
151 && e1.error == e2.error
152 && strcmp (msg1, msg2) == 0);