| /* Find FDE for given address. |
| Copyright (C) 2001, 2002 Red Hat, Inc. |
| This file is part of Red Hat elfutils. |
| Written by Ulrich Drepper <drepper@redhat.com>, 2001. |
| |
| Red Hat elfutils is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by the |
| Free Software Foundation; version 2 of the License. |
| |
| Red Hat 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 a copy of the GNU General Public License along |
| with Red Hat elfutils; if not, write to the Free Software Foundation, |
| Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| |
| Red Hat elfutils is an included package of the Open Invention Network. |
| An included package of the Open Invention Network is a package for which |
| Open Invention Network licensees cross-license their patents. No patent |
| license is granted, either expressly or impliedly, by designation as an |
| included package. Should you wish to participate in the Open Invention |
| Network licensing program, please visit www.openinventionnetwork.com |
| <http://www.openinventionnetwork.com>. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include "libdwarfP.h" |
| |
| |
| int |
| dwarf_get_fde_at_pc (fde_data, pc_of_interest, returned_fde, lopc, hipc, error) |
| Dwarf_Fde *fde_data; |
| Dwarf_Addr pc_of_interest; |
| Dwarf_Fde *returned_fde; |
| Dwarf_Addr *lopc; |
| Dwarf_Addr *hipc; |
| Dwarf_Error *error; |
| { |
| Dwarf_Debug dbg = fde_data[0]->cie->dbg; |
| int low = 0; |
| int high = dbg->fde_cnt - 1; |
| |
| /* Since the FDEs are sorted by their addresses and since there can |
| potentially be many FDEs we better use binary search. */ |
| while (low <= high) |
| { |
| int curidx = (low + high) / 2; |
| Dwarf_Fde cur = fde_data[curidx]; |
| |
| if (pc_of_interest < cur->initial_location) |
| high = curidx - 1; |
| else if (likely (cur->initial_location + cur->address_range |
| <= pc_of_interest)) |
| low = curidx + 1; |
| else |
| { |
| *returned_fde = cur; |
| *lopc = cur->initial_location; |
| *hipc = cur->initial_location + cur->address_range - 1; |
| return DW_DLV_OK; |
| } |
| } |
| |
| return DW_DLV_NO_ENTRY; |
| } |