diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/libdwarf_ranges.c')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/libdwarf_ranges.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/libdwarf_ranges.c b/rtemstoolkit/elftoolchain/libdwarf/libdwarf_ranges.c new file mode 100644 index 0000000..3396bb9 --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/libdwarf_ranges.c @@ -0,0 +1,152 @@ +/*- + * 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_ranges.c 2972 2013-12-23 06:46:04Z kaiwang27 $"); + +static int +_dwarf_ranges_parse(Dwarf_Debug dbg, Dwarf_CU cu, Dwarf_Section *ds, + uint64_t off, Dwarf_Ranges *rg, Dwarf_Unsigned *cnt) +{ + Dwarf_Unsigned start, end; + int i; + + i = 0; + while (off < ds->ds_size) { + + start = dbg->read(ds->ds_data, &off, cu->cu_pointer_size); + end = dbg->read(ds->ds_data, &off, cu->cu_pointer_size); + + if (rg != NULL) { + rg[i].dwr_addr1 = start; + rg[i].dwr_addr2 = end; + if (start == 0 && end == 0) + rg[i].dwr_type = DW_RANGES_END; + else if ((start == ~0U && cu->cu_pointer_size == 4) || + (start == ~0ULL && cu->cu_pointer_size == 8)) + rg[i].dwr_type = DW_RANGES_ADDRESS_SELECTION; + else + rg[i].dwr_type = DW_RANGES_ENTRY; + } + + i++; + + if (start == 0 && end == 0) + break; + } + + if (cnt != NULL) + *cnt = i; + + return (DW_DLE_NONE); +} + +int +_dwarf_ranges_find(Dwarf_Debug dbg, uint64_t off, Dwarf_Rangelist *ret_rl) +{ + Dwarf_Rangelist rl; + + STAILQ_FOREACH(rl, &dbg->dbg_rllist, rl_next) + if (rl->rl_offset == off) + break; + + if (rl == NULL) + return (DW_DLE_NO_ENTRY); + + if (ret_rl != NULL) + *ret_rl = rl; + + return (DW_DLE_NONE); +} + +void +_dwarf_ranges_cleanup(Dwarf_Debug dbg) +{ + Dwarf_Rangelist rl, trl; + + if (STAILQ_EMPTY(&dbg->dbg_rllist)) + return; + + STAILQ_FOREACH_SAFE(rl, &dbg->dbg_rllist, rl_next, trl) { + STAILQ_REMOVE(&dbg->dbg_rllist, rl, _Dwarf_Rangelist, rl_next); + if (rl->rl_rgarray) + free(rl->rl_rgarray); + free(rl); + } +} + +int +_dwarf_ranges_add(Dwarf_Debug dbg, Dwarf_CU cu, uint64_t off, + Dwarf_Rangelist *ret_rl, Dwarf_Error *error) +{ + Dwarf_Section *ds; + Dwarf_Rangelist rl; + Dwarf_Unsigned cnt; + int ret; + + if ((ds = _dwarf_find_section(dbg, ".debug_ranges")) == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); + return (DW_DLE_NO_ENTRY); + } + + if ((rl = malloc(sizeof(struct _Dwarf_Rangelist))) == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + return (DW_DLE_MEMORY); + } + + rl->rl_offset = off; + + ret = _dwarf_ranges_parse(dbg, cu, ds, off, NULL, &cnt); + if (ret != DW_DLE_NONE) { + free(rl); + return (ret); + } + + rl->rl_rglen = cnt; + if (cnt != 0) { + if ((rl->rl_rgarray = calloc(cnt, sizeof(Dwarf_Ranges))) == + NULL) { + free(rl); + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + return (DW_DLE_MEMORY); + } + + ret = _dwarf_ranges_parse(dbg, cu, ds, off, rl->rl_rgarray, + NULL); + if (ret != DW_DLE_NONE) { + free(rl->rl_rgarray); + free(rl); + return (ret); + } + } else + rl->rl_rgarray = NULL; + + STAILQ_INSERT_TAIL(&dbg->dbg_rllist, rl, rl_next); + *ret_rl = rl; + + return (DW_DLE_NONE); +} |