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