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677f3fa8 | 1 | /* Default common target hook functions. |
7adcbafe | 2 | Copyright (C) 2003-2022 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" | |
c98c2430 | 26 | #include "opts.h" |
677f3fa8 JM |
27 | |
28 | /* Determine the exception handling mechanism for the target. */ | |
29 | ||
30 | enum unwind_info_type | |
31 | default_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) | |
32 | { | |
33 | /* Obey the configure switch to turn on sjlj exceptions. */ | |
34 | #ifdef CONFIG_SJLJ_EXCEPTIONS | |
35 | if (CONFIG_SJLJ_EXCEPTIONS) | |
36 | return UI_SJLJ; | |
37 | #endif | |
38 | ||
39 | /* ??? Change all users to the hook, then poison this. */ | |
40 | #ifdef DWARF2_UNWIND_INFO | |
41 | if (DWARF2_UNWIND_INFO) | |
42 | return UI_DWARF2; | |
43 | #endif | |
44 | ||
45 | return UI_SJLJ; | |
46 | } | |
47 | ||
48 | /* To be used by targets that force dwarf2 unwind enabled. */ | |
49 | ||
50 | enum unwind_info_type | |
51 | dwarf2_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) | |
52 | { | |
53 | /* Obey the configure switch to turn on sjlj exceptions. */ | |
54 | #ifdef CONFIG_SJLJ_EXCEPTIONS | |
55 | if (CONFIG_SJLJ_EXCEPTIONS) | |
56 | return UI_SJLJ; | |
57 | #endif | |
58 | ||
59 | return UI_DWARF2; | |
60 | } | |
61 | ||
62 | /* To be used by targets that force sjlj unwind enabled. */ | |
63 | ||
64 | enum unwind_info_type | |
65 | sjlj_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) | |
66 | { | |
67 | return UI_SJLJ; | |
68 | } | |
69 | ||
70 | /* Default version of TARGET_HANDLE_OPTION. */ | |
71 | ||
72 | bool | |
73 | default_target_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED, | |
74 | struct gcc_options *opts_set ATTRIBUTE_UNUSED, | |
75 | const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED, | |
76 | location_t loc ATTRIBUTE_UNUSED) | |
77 | { | |
78 | return true; | |
79 | } | |
80 | ||
c98c2430 ML |
81 | /* Default version of TARGET_GET_VALID_OPTION_VALUES. */ |
82 | ||
83 | vec<const char *> | |
84 | default_get_valid_option_values (int, const char *) | |
85 | { | |
86 | return vec<const char *> (); | |
87 | } | |
88 | ||
677f3fa8 JM |
89 | const struct default_options empty_optimization_table[] = |
90 | { | |
91 | { OPT_LEVELS_NONE, 0, NULL, 0 } | |
92 | }; |