xref: /freebsd/contrib/elftoolchain/libdwarf/dwarf_arange.c (revision 6cec9cad762b6476313fb1f8e931a1647822db6b)
1*2de3b87aSKai Wang /*-
2*2de3b87aSKai Wang  * Copyright (c) 2009,2011 Kai Wang
3*2de3b87aSKai Wang  * All rights reserved.
4*2de3b87aSKai Wang  *
5*2de3b87aSKai Wang  * Redistribution and use in source and binary forms, with or without
6*2de3b87aSKai Wang  * modification, are permitted provided that the following conditions
7*2de3b87aSKai Wang  * are met:
8*2de3b87aSKai Wang  * 1. Redistributions of source code must retain the above copyright
9*2de3b87aSKai Wang  *    notice, this list of conditions and the following disclaimer.
10*2de3b87aSKai Wang  * 2. Redistributions in binary form must reproduce the above copyright
11*2de3b87aSKai Wang  *    notice, this list of conditions and the following disclaimer in the
12*2de3b87aSKai Wang  *    documentation and/or other materials provided with the distribution.
13*2de3b87aSKai Wang  *
14*2de3b87aSKai Wang  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*2de3b87aSKai Wang  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*2de3b87aSKai Wang  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*2de3b87aSKai Wang  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*2de3b87aSKai Wang  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*2de3b87aSKai Wang  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*2de3b87aSKai Wang  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*2de3b87aSKai Wang  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*2de3b87aSKai Wang  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*2de3b87aSKai Wang  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*2de3b87aSKai Wang  * SUCH DAMAGE.
25*2de3b87aSKai Wang  */
26*2de3b87aSKai Wang 
27*2de3b87aSKai Wang #include "_libdwarf.h"
28*2de3b87aSKai Wang 
29*2de3b87aSKai Wang ELFTC_VCSID("$Id: dwarf_arange.c 2072 2011-10-27 03:26:49Z jkoshy $");
30*2de3b87aSKai Wang 
31*2de3b87aSKai Wang int
dwarf_get_aranges(Dwarf_Debug dbg,Dwarf_Arange ** arlist,Dwarf_Signed * ret_arange_cnt,Dwarf_Error * error)32*2de3b87aSKai Wang dwarf_get_aranges(Dwarf_Debug dbg, Dwarf_Arange **arlist,
33*2de3b87aSKai Wang     Dwarf_Signed *ret_arange_cnt, Dwarf_Error *error)
34*2de3b87aSKai Wang {
35*2de3b87aSKai Wang 
36*2de3b87aSKai Wang 	if (dbg == NULL || arlist == NULL || ret_arange_cnt == NULL) {
37*2de3b87aSKai Wang 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
38*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
39*2de3b87aSKai Wang 	}
40*2de3b87aSKai Wang 
41*2de3b87aSKai Wang 	if (dbg->dbg_arange_cnt == 0) {
42*2de3b87aSKai Wang 		if (_dwarf_arange_init(dbg, error) != DW_DLE_NONE)
43*2de3b87aSKai Wang 			return (DW_DLV_ERROR);
44*2de3b87aSKai Wang 		if (dbg->dbg_arange_cnt == 0) {
45*2de3b87aSKai Wang 			DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
46*2de3b87aSKai Wang 			return (DW_DLV_NO_ENTRY);
47*2de3b87aSKai Wang 		}
48*2de3b87aSKai Wang 	}
49*2de3b87aSKai Wang 
50*2de3b87aSKai Wang 	assert(dbg->dbg_arange_array != NULL);
51*2de3b87aSKai Wang 
52*2de3b87aSKai Wang 	*arlist = dbg->dbg_arange_array;
53*2de3b87aSKai Wang 	*ret_arange_cnt = dbg->dbg_arange_cnt;
54*2de3b87aSKai Wang 
55*2de3b87aSKai Wang 	return (DW_DLV_OK);
56*2de3b87aSKai Wang }
57*2de3b87aSKai Wang 
58*2de3b87aSKai Wang int
dwarf_get_arange(Dwarf_Arange * arlist,Dwarf_Unsigned arange_cnt,Dwarf_Addr addr,Dwarf_Arange * ret_arange,Dwarf_Error * error)59*2de3b87aSKai Wang dwarf_get_arange(Dwarf_Arange *arlist, Dwarf_Unsigned arange_cnt,
60*2de3b87aSKai Wang     Dwarf_Addr addr, Dwarf_Arange *ret_arange, Dwarf_Error *error)
61*2de3b87aSKai Wang {
62*2de3b87aSKai Wang 	Dwarf_Arange ar;
63*2de3b87aSKai Wang 	Dwarf_Debug dbg;
64*2de3b87aSKai Wang 	int i;
65*2de3b87aSKai Wang 
66*2de3b87aSKai Wang 	if (arlist == NULL) {
67*2de3b87aSKai Wang 		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
68*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
69*2de3b87aSKai Wang 	}
70*2de3b87aSKai Wang 
71*2de3b87aSKai Wang 	dbg = (*arlist)->ar_as->as_cu->cu_dbg;
72*2de3b87aSKai Wang 
73*2de3b87aSKai Wang 	if (ret_arange == NULL || arange_cnt == 0) {
74*2de3b87aSKai Wang 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
75*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
76*2de3b87aSKai Wang 	}
77*2de3b87aSKai Wang 
78*2de3b87aSKai Wang 	for (i = 0; (Dwarf_Unsigned)i < arange_cnt; i++) {
79*2de3b87aSKai Wang 		ar = arlist[i];
80*2de3b87aSKai Wang 		if (addr >= ar->ar_address && addr < ar->ar_address +
81*2de3b87aSKai Wang 		    ar->ar_range) {
82*2de3b87aSKai Wang 			*ret_arange = ar;
83*2de3b87aSKai Wang 			return (DW_DLV_OK);
84*2de3b87aSKai Wang 		}
85*2de3b87aSKai Wang 	}
86*2de3b87aSKai Wang 
87*2de3b87aSKai Wang 	DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
88*2de3b87aSKai Wang 
89*2de3b87aSKai Wang 	return (DW_DLV_NO_ENTRY);
90*2de3b87aSKai Wang }
91*2de3b87aSKai Wang 
92*2de3b87aSKai Wang int
dwarf_get_cu_die_offset(Dwarf_Arange ar,Dwarf_Off * ret_offset,Dwarf_Error * error)93*2de3b87aSKai Wang dwarf_get_cu_die_offset(Dwarf_Arange ar, Dwarf_Off *ret_offset,
94*2de3b87aSKai Wang     Dwarf_Error *error)
95*2de3b87aSKai Wang {
96*2de3b87aSKai Wang 	Dwarf_CU cu;
97*2de3b87aSKai Wang 	Dwarf_ArangeSet as;
98*2de3b87aSKai Wang 
99*2de3b87aSKai Wang 	if (ar == NULL) {
100*2de3b87aSKai Wang 		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
101*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
102*2de3b87aSKai Wang 	}
103*2de3b87aSKai Wang 
104*2de3b87aSKai Wang 	as = ar->ar_as;
105*2de3b87aSKai Wang 	assert(as != NULL);
106*2de3b87aSKai Wang 	cu = as->as_cu;
107*2de3b87aSKai Wang 	assert(cu != NULL);
108*2de3b87aSKai Wang 
109*2de3b87aSKai Wang 	if (ret_offset == NULL) {
110*2de3b87aSKai Wang 		DWARF_SET_ERROR(cu->cu_dbg, error, DW_DLE_ARGUMENT);
111*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
112*2de3b87aSKai Wang 	}
113*2de3b87aSKai Wang 
114*2de3b87aSKai Wang 	*ret_offset = cu->cu_1st_offset;
115*2de3b87aSKai Wang 
116*2de3b87aSKai Wang 	return (DW_DLV_OK);
117*2de3b87aSKai Wang }
118*2de3b87aSKai Wang 
119*2de3b87aSKai Wang int
dwarf_get_arange_cu_header_offset(Dwarf_Arange ar,Dwarf_Off * ret_offset,Dwarf_Error * error)120*2de3b87aSKai Wang dwarf_get_arange_cu_header_offset(Dwarf_Arange ar, Dwarf_Off *ret_offset,
121*2de3b87aSKai Wang     Dwarf_Error *error)
122*2de3b87aSKai Wang {
123*2de3b87aSKai Wang 	Dwarf_ArangeSet as;
124*2de3b87aSKai Wang 
125*2de3b87aSKai Wang 	if (ar == NULL) {
126*2de3b87aSKai Wang 		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
127*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
128*2de3b87aSKai Wang 	}
129*2de3b87aSKai Wang 
130*2de3b87aSKai Wang 	as = ar->ar_as;
131*2de3b87aSKai Wang 	assert(as != NULL);
132*2de3b87aSKai Wang 
133*2de3b87aSKai Wang 	if (ret_offset == NULL) {
134*2de3b87aSKai Wang 		DWARF_SET_ERROR(as->as_cu->cu_dbg, error, DW_DLE_ARGUMENT);
135*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
136*2de3b87aSKai Wang 	}
137*2de3b87aSKai Wang 
138*2de3b87aSKai Wang 	*ret_offset = as->as_cu_offset;
139*2de3b87aSKai Wang 
140*2de3b87aSKai Wang 	return (DW_DLV_OK);
141*2de3b87aSKai Wang }
142*2de3b87aSKai Wang 
143*2de3b87aSKai Wang int
dwarf_get_arange_info(Dwarf_Arange ar,Dwarf_Addr * start,Dwarf_Unsigned * length,Dwarf_Off * cu_die_offset,Dwarf_Error * error)144*2de3b87aSKai Wang dwarf_get_arange_info(Dwarf_Arange ar, Dwarf_Addr *start,
145*2de3b87aSKai Wang     Dwarf_Unsigned *length, Dwarf_Off *cu_die_offset, Dwarf_Error *error)
146*2de3b87aSKai Wang {
147*2de3b87aSKai Wang 	Dwarf_CU cu;
148*2de3b87aSKai Wang 	Dwarf_ArangeSet as;
149*2de3b87aSKai Wang 
150*2de3b87aSKai Wang 	if (ar == NULL) {
151*2de3b87aSKai Wang 		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
152*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
153*2de3b87aSKai Wang 	}
154*2de3b87aSKai Wang 
155*2de3b87aSKai Wang 	as = ar->ar_as;
156*2de3b87aSKai Wang 	assert(as != NULL);
157*2de3b87aSKai Wang 	cu = as->as_cu;
158*2de3b87aSKai Wang 	assert(cu != NULL);
159*2de3b87aSKai Wang 
160*2de3b87aSKai Wang 	if (start == NULL || length == NULL ||
161*2de3b87aSKai Wang 	    cu_die_offset == NULL) {
162*2de3b87aSKai Wang 		DWARF_SET_ERROR(cu->cu_dbg, error, DW_DLE_ARGUMENT);
163*2de3b87aSKai Wang 		return (DW_DLV_ERROR);
164*2de3b87aSKai Wang 	}
165*2de3b87aSKai Wang 
166*2de3b87aSKai Wang 	*start = ar->ar_address;
167*2de3b87aSKai Wang 	*length = ar->ar_range;
168*2de3b87aSKai Wang 	*cu_die_offset = cu->cu_1st_offset;
169*2de3b87aSKai Wang 
170*2de3b87aSKai Wang 	return (DW_DLV_OK);
171*2de3b87aSKai Wang }
172