diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_reloc.c')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_reloc.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_reloc.c b/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_reloc.c new file mode 100644 index 0000000..6b0b2e2 --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_reloc.c @@ -0,0 +1,114 @@ +/*- + * 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); +} |