projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| cd4fb1b2 SM |
1 | /* Things needed for both reading and writing DWARF indices. |
| 2 | ||
| 3 | Copyright (C) 1994-2018 Free Software Foundation, Inc. | |
| 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 | #ifndef DWARF_INDEX_COMMON_H | |
| 21 | #define DWARF_INDEX_COMMON_H | |
| 22 | ||
| 23 | /* All offsets in the index are of this type. It must be | |
| 24 | architecture-independent. */ | |
| 25 | typedef uint32_t offset_type; | |
| 26 | ||
| 27 | #if WORDS_BIGENDIAN | |
| 28 | ||
| 29 | /* Convert VALUE between big- and little-endian. */ | |
| 30 | ||
| 31 | static inline offset_type | |
| 32 | byte_swap (offset_type value) | |
| 33 | { | |
| 34 | offset_type result; | |
| 35 | ||
| 36 | result = (value & 0xff) << 24; | |
| 37 | result |= (value & 0xff00) << 8; | |
| 38 | result |= (value & 0xff0000) >> 8; | |
| 39 | result |= (value & 0xff000000) >> 24; | |
| 40 | return result; | |
| 41 | } | |
| 42 | ||
| 43 | #define MAYBE_SWAP(V) byte_swap (V) | |
| 44 | ||
| 45 | #else | |
| 46 | #define MAYBE_SWAP(V) static_cast<offset_type> (V) | |
| 47 | #endif /* WORDS_BIGENDIAN */ | |
| 48 | ||
| 49 | /* The hash function for strings in the mapped index. This is the same as | |
| 50 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
| 51 | implementation. This is necessary because the hash function is tied to the | |
| 52 | format of the mapped index file. The hash values do not have to match with | |
| 53 | SYMBOL_HASH_NEXT. | |
| 54 | ||
| 55 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
| 56 | ||
| 57 | hashval_t mapped_index_string_hash (int index_version, const void *p); | |
| 58 | ||
| 59 | /* Symbol name hashing function as specified by DWARF-5. */ | |
| 60 | ||
| 61 | uint32_t dwarf5_djb_hash (const char *str_); | |
| 62 | ||
| 63 | #endif /* DWARF_INDEX_COMMON_H */ |