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677f3fa8 | 1 | /* Default common target hook functions. |
818ab71a | 2 | Copyright (C) 2003-2016 Free Software Foundation, Inc. |
677f3fa8 JM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
677f3fa8 JM |
23 | #include "tm.h" |
24 | #include "common/common-target.h" | |
25 | #include "common/common-targhooks.h" | |
26 | ||
27 | /* Determine the exception handling mechanism for the target. */ | |
28 | ||
29 | enum unwind_info_type | |
30 | default_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) | |
31 | { | |
32 | /* Obey the configure switch to turn on sjlj exceptions. */ | |
33 | #ifdef CONFIG_SJLJ_EXCEPTIONS | |
34 | if (CONFIG_SJLJ_EXCEPTIONS) | |
35 | return UI_SJLJ; | |
36 | #endif | |
37 | ||
38 | /* ??? Change all users to the hook, then poison this. */ | |
39 | #ifdef DWARF2_UNWIND_INFO | |
40 | if (DWARF2_UNWIND_INFO) | |
41 | return UI_DWARF2; | |
42 | #endif | |
43 | ||
44 | return UI_SJLJ; | |
45 | } | |
46 | ||
47 | /* To be used by targets that force dwarf2 unwind enabled. */ | |
48 | ||
49 | enum unwind_info_type | |
50 | dwarf2_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) | |
51 | { | |
52 | /* Obey the configure switch to turn on sjlj exceptions. */ | |
53 | #ifdef CONFIG_SJLJ_EXCEPTIONS | |
54 | if (CONFIG_SJLJ_EXCEPTIONS) | |
55 | return UI_SJLJ; | |
56 | #endif | |
57 | ||
58 | return UI_DWARF2; | |
59 | } | |
60 | ||
61 | /* To be used by targets that force sjlj unwind enabled. */ | |
62 | ||
63 | enum unwind_info_type | |
64 | sjlj_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) | |
65 | { | |
66 | return UI_SJLJ; | |
67 | } | |
68 | ||
69 | /* Default version of TARGET_HANDLE_OPTION. */ | |
70 | ||
71 | bool | |
72 | default_target_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED, | |
73 | struct gcc_options *opts_set ATTRIBUTE_UNUSED, | |
74 | const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED, | |
75 | location_t loc ATTRIBUTE_UNUSED) | |
76 | { | |
77 | return true; | |
78 | } | |
79 | ||
80 | const struct default_options empty_optimization_table[] = | |
81 | { | |
82 | { OPT_LEVELS_NONE, 0, NULL, 0 } | |
83 | }; |