Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Return file name containing definition of the given function. |
| 2 | Copyright (C) 2005 Red Hat, Inc. |
| 3 | Written by Ulrich Drepper <drepper@redhat.com>, 2005. |
| 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 <assert.h> |
| 20 | #include <dwarf.h> |
| 21 | #include "libdwP.h" |
| 22 | |
| 23 | |
| 24 | const char * |
| 25 | dwarf_func_file (Dwarf_Func *func) |
| 26 | { |
| 27 | Dwarf_Attribute attr_mem; |
| 28 | Dwarf_Sword idx = 0; |
| 29 | Dwarf_Die *die = func->die; |
| 30 | |
| 31 | if (INTUSE(dwarf_formsdata) (INTUSE(dwarf_attr) (die, DW_AT_decl_file, |
| 32 | &attr_mem), &idx) != 0) |
| 33 | return NULL; |
| 34 | |
| 35 | /* Zero means no source file information available. */ |
| 36 | if (idx == 0) |
| 37 | { |
| 38 | __libdw_seterrno (DWARF_E_NO_ENTRY); |
| 39 | return NULL; |
| 40 | } |
| 41 | |
| 42 | /* Get the array of source files for the CU. */ |
| 43 | struct Dwarf_CU *cu = die->cu; |
| 44 | if (cu->lines == NULL) |
| 45 | { |
| 46 | Dwarf_Lines *lines; |
| 47 | size_t nlines; |
| 48 | |
| 49 | /* Let the more generic function do the work. It'll create more |
| 50 | data but that will be needed in an real program anyway. */ |
| 51 | (void) INTUSE(dwarf_getsrclines) (func->cudie, &lines, &nlines); |
| 52 | assert (cu->lines != NULL); |
| 53 | } |
| 54 | |
| 55 | if (cu->lines == (void *) -1l) |
| 56 | { |
| 57 | /* If the file index is not zero, there must be file information |
| 58 | available. */ |
| 59 | __libdw_seterrno (DWARF_E_INVALID_DWARF); |
| 60 | return NULL; |
| 61 | } |
| 62 | |
| 63 | assert (cu->files != NULL && cu->files != (void *) -1l); |
| 64 | |
| 65 | if (idx >= cu->files->nfiles) |
| 66 | { |
| 67 | __libdw_seterrno (DWARF_E_INVALID_DWARF); |
| 68 | return NULL; |
| 69 | } |
| 70 | |
| 71 | return cu->files->info[idx].name; |
| 72 | } |