diff options
Diffstat (limited to 'libdwarf/dwarf_cu.c')
| -rw-r--r-- | libdwarf/dwarf_cu.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/libdwarf/dwarf_cu.c b/libdwarf/dwarf_cu.c new file mode 100644 index 000000000000..c203dc2f1fc7 --- /dev/null +++ b/libdwarf/dwarf_cu.c @@ -0,0 +1,99 @@ +/*- + * Copyright (c) 2007 John Birrell (jb@freebsd.org) + * 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_cu.c 2072 2011-10-27 03:26:49Z jkoshy $"); + +int +dwarf_next_cu_header_b(Dwarf_Debug dbg, Dwarf_Unsigned *cu_length, + Dwarf_Half *cu_version, Dwarf_Off *cu_abbrev_offset, + Dwarf_Half *cu_pointer_size, Dwarf_Half *cu_offset_size, + Dwarf_Half *cu_extension_size, Dwarf_Unsigned *cu_next_offset, + Dwarf_Error *error) +{ + Dwarf_CU cu; + int ret; + + if (dbg == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); + return (DW_DLV_ERROR); + } + + if (dbg->dbg_cu_current == NULL) + ret = _dwarf_info_first_cu(dbg, error); + else + ret = _dwarf_info_next_cu(dbg, error); + + if (ret == DW_DLE_NO_ENTRY) { + DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); + return (DW_DLV_NO_ENTRY); + } else if (ret != DW_DLE_NONE) + return (DW_DLV_ERROR); + + if (dbg->dbg_cu_current == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); + return (DW_DLV_NO_ENTRY); + } + cu = dbg->dbg_cu_current; + + if (cu_length) + *cu_length = cu->cu_length; + if (cu_version) + *cu_version = cu->cu_version; + if (cu_abbrev_offset) + *cu_abbrev_offset = (Dwarf_Off) cu->cu_abbrev_offset; + if (cu_pointer_size) + *cu_pointer_size = cu->cu_pointer_size; + if (cu_offset_size) { + if (cu->cu_length_size == 4) + *cu_offset_size = 4; + else + *cu_offset_size = 8; + } + if (cu_extension_size) { + if (cu->cu_length_size == 4) + *cu_extension_size = 0; + else + *cu_extension_size = 4; + } + if (cu_next_offset) + *cu_next_offset = dbg->dbg_cu_current->cu_next_offset; + + return (DW_DLV_OK); +} + +int +dwarf_next_cu_header(Dwarf_Debug dbg, Dwarf_Unsigned *cu_length, + Dwarf_Half *cu_version, Dwarf_Off *cu_abbrev_offset, + Dwarf_Half *cu_pointer_size, Dwarf_Unsigned *cu_next_offset, + Dwarf_Error *error) +{ + + return (dwarf_next_cu_header_b(dbg, cu_length, cu_version, + cu_abbrev_offset, cu_pointer_size, NULL, NULL, cu_next_offset, + error)); +} |