diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/libdwarf_elf_access.c')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/libdwarf_elf_access.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/libdwarf_elf_access.c b/rtemstoolkit/elftoolchain/libdwarf/libdwarf_elf_access.c new file mode 100644 index 0000000..d3e381b --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/libdwarf_elf_access.c @@ -0,0 +1,164 @@ +/*- + * Copyright (c) 2009 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: libdwarf_elf_access.c 2070 2011-10-27 03:05:32Z jkoshy $"); + +int +_dwarf_elf_get_section_info(void *obj, Dwarf_Half ndx, + Dwarf_Obj_Access_Section *ret_section, int *error) +{ + Dwarf_Elf_Object *e; + GElf_Shdr *sh; + + e = obj; + assert(e != NULL); + + if (ret_section == NULL) { + if (error) + *error = DW_DLE_ARGUMENT; + return (DW_DLV_ERROR); + } + + if (ndx >= e->eo_seccnt) { + if (error) + *error = DW_DLE_NO_ENTRY; + return (DW_DLV_NO_ENTRY); + } + + sh = &e->eo_shdr[ndx]; + + ret_section->addr = sh->sh_addr; + ret_section->size = sh->sh_size; + + ret_section->name = elf_strptr(e->eo_elf, e->eo_strndx, sh->sh_name); + if (ret_section->name == NULL) { + if (error) + *error = DW_DLE_ELF; + return (DW_DLV_ERROR); + } + + return (DW_DLV_OK); +} + +Dwarf_Endianness +_dwarf_elf_get_byte_order(void *obj) +{ + Dwarf_Elf_Object *e; + + e = obj; + assert(e != NULL); + + switch (e->eo_ehdr.e_ident[EI_DATA]) { + case ELFDATA2MSB: + return (DW_OBJECT_MSB); + + case ELFDATA2LSB: + case ELFDATANONE: + default: + return (DW_OBJECT_LSB); + } +} + +Dwarf_Small +_dwarf_elf_get_length_size(void *obj) +{ + Dwarf_Elf_Object *e; + + e = obj; + assert(e != NULL); + + if (gelf_getclass(e->eo_elf) == ELFCLASS32) + return (4); + else if (e->eo_ehdr.e_machine == EM_MIPS) + return (8); + else + return (4); +} + +Dwarf_Small +_dwarf_elf_get_pointer_size(void *obj) +{ + Dwarf_Elf_Object *e; + + e = obj; + assert(e != NULL); + + if (gelf_getclass(e->eo_elf) == ELFCLASS32) + return (4); + else + return (8); +} + +Dwarf_Unsigned +_dwarf_elf_get_section_count(void *obj) +{ + Dwarf_Elf_Object *e; + + e = obj; + assert(e != NULL); + + return (e->eo_seccnt); +} + +int +_dwarf_elf_load_section(void *obj, Dwarf_Half ndx, Dwarf_Small** ret_data, + int *error) +{ + Dwarf_Elf_Object *e; + Dwarf_Elf_Data *ed; + + e = obj; + assert(e != NULL); + + if (ret_data == NULL) { + if (error) + *error = DW_DLE_ARGUMENT; + return (DW_DLV_ERROR); + } + + if (ndx >= e->eo_seccnt) { + if (error) + *error = DW_DLE_NO_ENTRY; + return (DW_DLV_NO_ENTRY); + } + + ed = &e->eo_data[ndx]; + + if (ed->ed_alloc != NULL) + *ret_data = ed->ed_alloc; + else { + if (ed->ed_data == NULL) { + if (error) + *error = DW_DLE_NO_ENTRY; + return (DW_DLV_NO_ENTRY); + } + *ret_data = ed->ed_data->d_buf; + } + + return (DW_DLV_OK); +} |