Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Return tag of given DIE. |
| 2 | Copyright (C) 2003, 2004, 2005 Red Hat, Inc. |
| 3 | Written by Ulrich Drepper <drepper@redhat.com>, 2003. |
| 4 | |
| 5 | This program is Open Source software; you can redistribute it and/or |
| 6 | modify it under the terms of the Open Software License version 1.0 as |
| 7 | published by the Open Source Initiative. |
| 8 | |
| 9 | You should have received a copy of the Open Software License along |
| 10 | with this program; if not, you may obtain a copy of the Open Software |
| 11 | License version 1.0 from http://www.opensource.org/licenses/osl.php or |
| 12 | by writing the Open Source Initiative c/o Lawrence Rosen, Esq., |
| 13 | 3001 King Ranch Road, Ukiah, CA 95482. */ |
| 14 | |
| 15 | #ifdef HAVE_CONFIG_H |
| 16 | # include <config.h> |
| 17 | #endif |
| 18 | |
| 19 | #include "libdwP.h" |
| 20 | |
| 21 | |
| 22 | Dwarf_Abbrev * |
| 23 | internal_function_def |
| 24 | __libdw_findabbrev (struct Dwarf_CU *cu, unsigned int code) |
| 25 | { |
| 26 | Dwarf_Abbrev *abb; |
| 27 | |
| 28 | /* See whether the entry is already in the hash table. */ |
| 29 | abb = Dwarf_Abbrev_Hash_find (&cu->abbrev_hash, code, NULL); |
| 30 | if (abb == NULL) |
| 31 | while (cu->last_abbrev_offset != (size_t) -1l) |
| 32 | { |
| 33 | size_t length; |
| 34 | |
| 35 | /* Find the next entry. It gets automatically added to the |
| 36 | hash table. */ |
| 37 | abb = __libdw_getabbrev (cu->dbg, cu, cu->last_abbrev_offset, &length, |
| 38 | NULL); |
| 39 | if (abb == NULL || abb == DWARF_END_ABBREV) |
| 40 | { |
| 41 | /* Make sure we do not try to search for it again. */ |
| 42 | cu->last_abbrev_offset = (size_t) -1l; |
| 43 | abb = (void *) -1l; |
| 44 | break; |
| 45 | } |
| 46 | |
| 47 | cu->last_abbrev_offset += length; |
| 48 | |
| 49 | /* Is this the code we are looking for? */ |
| 50 | if (abb->code == code) |
| 51 | break; |
| 52 | } |
| 53 | |
| 54 | return abb; |
| 55 | } |
| 56 | |
| 57 | |
| 58 | int |
| 59 | dwarf_tag (die) |
| 60 | Dwarf_Die *die; |
| 61 | { |
| 62 | /* Do we already know the abbreviation? */ |
| 63 | if (die->abbrev == NULL) |
| 64 | { |
| 65 | /* Get the abbreviation code. */ |
| 66 | unsigned int u128; |
| 67 | const unsigned char *addr = die->addr; |
| 68 | get_uleb128 (u128, addr); |
| 69 | |
| 70 | /* Find the abbreviation. */ |
| 71 | die->abbrev = __libdw_findabbrev (die->cu, u128); |
| 72 | } |
| 73 | |
| 74 | if (die->abbrev == (Dwarf_Abbrev *) -1l) |
| 75 | { |
| 76 | __libdw_seterrno (DWARF_E_INVALID_DWARF); |
| 77 | return DW_TAG_invalid; |
| 78 | } |
| 79 | |
| 80 | return die->abbrev->tag; |
| 81 | } |
| 82 | INTDEF(dwarf_tag) |