| 1 | /* Default common target hook functions. |
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| 2 | Copyright (C) 2003-2024 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GCC. |
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| 5 | |
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| 6 | GCC is free software; you can redistribute it and/or modify it under |
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| 7 | the terms of the GNU General Public License as published by the Free |
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| 8 | Software Foundation; either version 3, or (at your option) any later |
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| 9 | version. |
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| 10 | |
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| 11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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| 14 | for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with GCC; see the file COPYING3. If not see |
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| 18 | <http://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include "config.h" |
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| 21 | #include "system.h" |
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| 22 | #include "coretypes.h" |
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| 23 | #include "tm.h" |
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| 24 | #include "common/common-target.h" |
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| 25 | #include "common/common-targhooks.h" |
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| 26 | #include "opts.h" |
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| 27 | |
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| 28 | /* Determine the exception handling mechanism for the target. */ |
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| 29 | |
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| 30 | enum unwind_info_type |
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| 31 | default_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) |
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| 32 | { |
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| 33 | /* Obey the configure switch to turn on sjlj exceptions. */ |
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| 34 | #ifdef CONFIG_SJLJ_EXCEPTIONS |
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| 35 | if (CONFIG_SJLJ_EXCEPTIONS) |
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| 36 | return UI_SJLJ; |
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| 37 | #endif |
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| 38 | |
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| 39 | /* ??? Change all users to the hook, then poison this. */ |
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| 40 | #ifdef DWARF2_UNWIND_INFO |
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| 41 | if (DWARF2_UNWIND_INFO) |
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| 42 | return UI_DWARF2; |
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| 43 | #endif |
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| 44 | |
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| 45 | return UI_SJLJ; |
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| 46 | } |
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| 47 | |
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| 48 | /* To be used by targets that force dwarf2 unwind enabled. */ |
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| 49 | |
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| 50 | enum unwind_info_type |
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| 51 | dwarf2_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) |
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| 52 | { |
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| 53 | /* Obey the configure switch to turn on sjlj exceptions. */ |
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| 54 | #ifdef CONFIG_SJLJ_EXCEPTIONS |
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| 55 | if (CONFIG_SJLJ_EXCEPTIONS) |
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| 56 | return UI_SJLJ; |
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| 57 | #endif |
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| 58 | |
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| 59 | return UI_DWARF2; |
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| 60 | } |
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| 61 | |
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| 62 | /* To be used by targets that force sjlj unwind enabled. */ |
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| 63 | |
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| 64 | enum unwind_info_type |
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| 65 | sjlj_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) |
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| 66 | { |
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| 67 | return UI_SJLJ; |
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| 68 | } |
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| 69 | |
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| 70 | /* Default version of TARGET_HANDLE_OPTION. */ |
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| 71 | |
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| 72 | bool |
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| 73 | default_target_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED, |
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| 74 | struct gcc_options *opts_set ATTRIBUTE_UNUSED, |
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| 75 | const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED, |
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| 76 | location_t loc ATTRIBUTE_UNUSED) |
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| 77 | { |
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| 78 | return true; |
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| 79 | } |
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| 80 | |
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| 81 | /* Default version of TARGET_GET_VALID_OPTION_VALUES. */ |
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| 82 | |
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| 83 | vec<const char *> |
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| 84 | default_get_valid_option_values (int, const char *) |
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| 85 | { |
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| 86 | return vec<const char *> (); |
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| 87 | } |
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| 88 | |
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| 89 | const struct default_options empty_optimization_table[] = |
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| 90 | { |
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| 91 | { .levels: OPT_LEVELS_NONE, .opt_index: 0, NULL, .value: 0 } |
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| 92 | }; |
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| 93 | |
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| 94 | /* Default version of TARGET_COMPUTE_MULTILIB. */ |
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| 95 | const char * |
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| 96 | default_compute_multilib( |
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| 97 | const struct switchstr *, |
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| 98 | int, |
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| 99 | const char *multilib, |
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| 100 | const char *, |
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| 101 | const char *, |
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| 102 | const char *, |
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| 103 | const char *, |
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| 104 | const char *) |
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| 105 | { |
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| 106 | return multilib; |
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| 107 | } |
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| 108 | |
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