115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/*-
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* Copyright (c) 2010 Kai Wang
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "_libdwarf.h"
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ELFTC_VCSID("$Id: dwarf_pro_reloc.c 2074 2011-10-27 03:34:33Z jkoshy $");
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int
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dwarf_get_relocation_info_count(Dwarf_P_Debug dbg, Dwarf_Unsigned *reloc_cnt,
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int *drd_buffer_version, Dwarf_Error *error)
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{
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if (dbg == NULL || reloc_cnt == NULL || drd_buffer_version == NULL) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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if ((dbg->dbgp_flags & DW_DLC_SYMBOLIC_RELOCATIONS) == 0) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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*reloc_cnt = dbg->dbgp_drscnt;
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*drd_buffer_version = DWARF_DRD_BUFFER_VERSION;
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return (DW_DLV_OK);
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}
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int
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dwarf_get_relocation_info(Dwarf_P_Debug dbg, Dwarf_Signed *elf_section_index,
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Dwarf_Signed *elf_section_link, Dwarf_Unsigned *reloc_entry_count,
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Dwarf_Relocation_Data *reloc_buffer, Dwarf_Error *error)
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{
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Dwarf_Rel_Section drs;
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Dwarf_Rel_Entry dre;
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int i;
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if (dbg == NULL || elf_section_index == NULL ||
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elf_section_link == NULL || reloc_entry_count == NULL ||
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reloc_buffer == NULL) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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if ((dbg->dbgp_flags & DW_DLC_SYMBOLIC_RELOCATIONS) == 0) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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if (dbg->dbgp_drscnt == 0) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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if (dbg->dbgp_drspos == NULL) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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drs = dbg->dbgp_drspos;
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assert(drs->drs_ds != NULL && drs->drs_ref != NULL);
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assert(drs->drs_drecnt > 0);
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*elf_section_index = drs->drs_ds->ds_ndx;
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*elf_section_link = drs->drs_ref->ds_ndx;
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*reloc_entry_count = drs->drs_drecnt;
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if (drs->drs_drd == NULL) {
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drs->drs_drd = calloc(*reloc_entry_count,
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sizeof(struct Dwarf_Relocation_Data_s));
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if (drs->drs_drd == NULL) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
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return (DW_DLV_ERROR);
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}
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for (i = 0, dre = STAILQ_FIRST(&drs->drs_dre);
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(Dwarf_Unsigned) i < *reloc_entry_count && dre != NULL;
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i++, dre = STAILQ_NEXT(dre, dre_next)) {
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drs->drs_drd[i].drd_type = dre->dre_type;
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drs->drs_drd[i].drd_length = dre->dre_length;
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drs->drs_drd[i].drd_offset = dre->dre_offset;
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drs->drs_drd[i].drd_symbol_index = dre->dre_symndx;
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}
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assert((Dwarf_Unsigned) i == *reloc_entry_count && dre == NULL);
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}
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*reloc_buffer = drs->drs_drd;
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dbg->dbgp_drspos = STAILQ_NEXT(dbg->dbgp_drspos, drs_next);
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return (DW_DLV_OK);
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}
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