diff options
Diffstat (limited to 'libdw/dwarf_decl_file.c')
-rw-r--r-- | libdw/dwarf_decl_file.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/libdw/dwarf_decl_file.c b/libdw/dwarf_decl_file.c new file mode 100644 index 00000000..5657132f --- /dev/null +++ b/libdw/dwarf_decl_file.c @@ -0,0 +1,89 @@ +/* Return file name containing definition of the given function. + Copyright (C) 2005, 2009 Red Hat, Inc. + This file is part of elfutils. + Written by Ulrich Drepper <drepper@redhat.com>, 2005. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see <http://www.gnu.org/licenses/>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <assert.h> +#include <dwarf.h> +#include "libdwP.h" + + +const char * +dwarf_decl_file (Dwarf_Die *die) +{ + Dwarf_Attribute attr_mem; + Dwarf_Word idx = 0; + + if (INTUSE(dwarf_formudata) (INTUSE(dwarf_attr_integrate) + (die, DW_AT_decl_file, &attr_mem), + &idx) != 0) + return NULL; + + /* Zero means no source file information available. */ + if (idx == 0) + { + __libdw_seterrno (DWARF_E_NO_ENTRY); + return NULL; + } + + /* Get the array of source files for the CU. */ + struct Dwarf_CU *cu = die->cu; + if (cu->lines == NULL) + { + Dwarf_Lines *lines; + size_t nlines; + + /* Let the more generic function do the work. It'll create more + data but that will be needed in an real program anyway. */ + (void) INTUSE(dwarf_getsrclines) (&CUDIE (cu), &lines, &nlines); + assert (cu->lines != NULL); + } + + if (cu->lines == (void *) -1l) + { + /* If the file index is not zero, there must be file information + available. */ + __libdw_seterrno (DWARF_E_INVALID_DWARF); + return NULL; + } + + assert (cu->files != NULL && cu->files != (void *) -1l); + + if (idx >= cu->files->nfiles) + { + __libdw_seterrno (DWARF_E_INVALID_DWARF); + return NULL; + } + + return cu->files->info[idx].name; +} +OLD_VERSION (dwarf_decl_file, ELFUTILS_0.122) +NEW_VERSION (dwarf_decl_file, ELFUTILS_0.143) |