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dwarf_ranges.c revision 1.1.1.1 
      1 /*-
      2  * Copyright (c) 2009,2011 Kai Wang
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     24  * SUCH DAMAGE.
     25  */
     26 
     27 #include "_libdwarf.h"
     28 
     29 ELFTC_VCSID("Id: dwarf_ranges.c 2075 2011-10-27 03:47:28Z jkoshy ");
     30 
     31 static int
     32 _dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_CU cu, Dwarf_Off off,
     33     Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt,
     34     Dwarf_Error *error)
     35 {
     36 	Dwarf_Rangelist rl;
     37 	int ret;
     38 
     39 	assert(cu != NULL);
     40 	if (_dwarf_ranges_find(dbg, off, &rl) == DW_DLE_NO_ENTRY) {
     41 		ret = _dwarf_ranges_add(dbg, cu, off, &rl, error);
     42 		if (ret != DW_DLE_NONE)
     43 			return (DW_DLV_ERROR);
     44 	}
     45 
     46 	*ranges = rl->rl_rgarray;
     47 	*ret_cnt = rl->rl_rglen;
     48 
     49 	if (ret_byte_cnt != NULL)
     50 		*ret_byte_cnt = cu->cu_pointer_size * rl->rl_rglen * 2;
     51 
     52 	return (DW_DLV_OK);
     53 }
     54 
     55 int
     56 dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Ranges **ranges,
     57     Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt, Dwarf_Error *error)
     58 {
     59 
     60 	if (dbg == NULL || ranges == NULL || ret_cnt == NULL) {
     61 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
     62 		return (DW_DLV_ERROR);
     63 	}
     64 
     65 	if (!dbg->dbg_info_loaded) {
     66 		if (_dwarf_info_load(dbg, 1, error) != DW_DLE_NONE)
     67 			return (DW_DLV_ERROR);
     68 	}
     69 
     70 	return (_dwarf_get_ranges(dbg, STAILQ_FIRST(&dbg->dbg_cu), offset,
     71 	    ranges, ret_cnt, ret_byte_cnt, error));
     72 }
     73 
     74 int
     75 dwarf_get_ranges_a(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Die die,
     76     Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt,
     77     Dwarf_Error *error)
     78 {
     79 
     80 	if (dbg == NULL || die == NULL || ranges == NULL || ret_cnt == NULL) {
     81 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
     82 		return (DW_DLV_ERROR);
     83 	}
     84 
     85 	return (_dwarf_get_ranges(dbg, die->die_cu, offset, ranges, ret_cnt,
     86 	    ret_byte_cnt, error));
     87 }
     88