1*2de3b87aSKai Wang /*-
2*2de3b87aSKai Wang * Copyright (c) 2009 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: libdwarf_elf_access.c 2070 2011-10-27 03:05:32Z jkoshy $");
30*2de3b87aSKai Wang
31*2de3b87aSKai Wang int
_dwarf_elf_get_section_info(void * obj,Dwarf_Half ndx,Dwarf_Obj_Access_Section * ret_section,int * error)32*2de3b87aSKai Wang _dwarf_elf_get_section_info(void *obj, Dwarf_Half ndx,
33*2de3b87aSKai Wang Dwarf_Obj_Access_Section *ret_section, int *error)
34*2de3b87aSKai Wang {
35*2de3b87aSKai Wang Dwarf_Elf_Object *e;
36*2de3b87aSKai Wang GElf_Shdr *sh;
37*2de3b87aSKai Wang
38*2de3b87aSKai Wang e = obj;
39*2de3b87aSKai Wang assert(e != NULL);
40*2de3b87aSKai Wang
41*2de3b87aSKai Wang if (ret_section == NULL) {
42*2de3b87aSKai Wang if (error)
43*2de3b87aSKai Wang *error = DW_DLE_ARGUMENT;
44*2de3b87aSKai Wang return (DW_DLV_ERROR);
45*2de3b87aSKai Wang }
46*2de3b87aSKai Wang
47*2de3b87aSKai Wang if (ndx >= e->eo_seccnt) {
48*2de3b87aSKai Wang if (error)
49*2de3b87aSKai Wang *error = DW_DLE_NO_ENTRY;
50*2de3b87aSKai Wang return (DW_DLV_NO_ENTRY);
51*2de3b87aSKai Wang }
52*2de3b87aSKai Wang
53*2de3b87aSKai Wang sh = &e->eo_shdr[ndx];
54*2de3b87aSKai Wang
55*2de3b87aSKai Wang ret_section->addr = sh->sh_addr;
56*2de3b87aSKai Wang ret_section->size = sh->sh_size;
57*2de3b87aSKai Wang
58*2de3b87aSKai Wang ret_section->name = elf_strptr(e->eo_elf, e->eo_strndx, sh->sh_name);
59*2de3b87aSKai Wang if (ret_section->name == NULL) {
60*2de3b87aSKai Wang if (error)
61*2de3b87aSKai Wang *error = DW_DLE_ELF;
62*2de3b87aSKai Wang return (DW_DLV_ERROR);
63*2de3b87aSKai Wang }
64*2de3b87aSKai Wang
65*2de3b87aSKai Wang return (DW_DLV_OK);
66*2de3b87aSKai Wang }
67*2de3b87aSKai Wang
68*2de3b87aSKai Wang Dwarf_Endianness
_dwarf_elf_get_byte_order(void * obj)69*2de3b87aSKai Wang _dwarf_elf_get_byte_order(void *obj)
70*2de3b87aSKai Wang {
71*2de3b87aSKai Wang Dwarf_Elf_Object *e;
72*2de3b87aSKai Wang
73*2de3b87aSKai Wang e = obj;
74*2de3b87aSKai Wang assert(e != NULL);
75*2de3b87aSKai Wang
76*2de3b87aSKai Wang switch (e->eo_ehdr.e_ident[EI_DATA]) {
77*2de3b87aSKai Wang case ELFDATA2MSB:
78*2de3b87aSKai Wang return (DW_OBJECT_MSB);
79*2de3b87aSKai Wang
80*2de3b87aSKai Wang case ELFDATA2LSB:
81*2de3b87aSKai Wang case ELFDATANONE:
82*2de3b87aSKai Wang default:
83*2de3b87aSKai Wang return (DW_OBJECT_LSB);
84*2de3b87aSKai Wang }
85*2de3b87aSKai Wang }
86*2de3b87aSKai Wang
87*2de3b87aSKai Wang Dwarf_Small
_dwarf_elf_get_length_size(void * obj)88*2de3b87aSKai Wang _dwarf_elf_get_length_size(void *obj)
89*2de3b87aSKai Wang {
90*2de3b87aSKai Wang Dwarf_Elf_Object *e;
91*2de3b87aSKai Wang
92*2de3b87aSKai Wang e = obj;
93*2de3b87aSKai Wang assert(e != NULL);
94*2de3b87aSKai Wang
95*2de3b87aSKai Wang if (gelf_getclass(e->eo_elf) == ELFCLASS32)
96*2de3b87aSKai Wang return (4);
97*2de3b87aSKai Wang else if (e->eo_ehdr.e_machine == EM_MIPS)
98*2de3b87aSKai Wang return (8);
99*2de3b87aSKai Wang else
100*2de3b87aSKai Wang return (4);
101*2de3b87aSKai Wang }
102*2de3b87aSKai Wang
103*2de3b87aSKai Wang Dwarf_Small
_dwarf_elf_get_pointer_size(void * obj)104*2de3b87aSKai Wang _dwarf_elf_get_pointer_size(void *obj)
105*2de3b87aSKai Wang {
106*2de3b87aSKai Wang Dwarf_Elf_Object *e;
107*2de3b87aSKai Wang
108*2de3b87aSKai Wang e = obj;
109*2de3b87aSKai Wang assert(e != NULL);
110*2de3b87aSKai Wang
111*2de3b87aSKai Wang if (gelf_getclass(e->eo_elf) == ELFCLASS32)
112*2de3b87aSKai Wang return (4);
113*2de3b87aSKai Wang else
114*2de3b87aSKai Wang return (8);
115*2de3b87aSKai Wang }
116*2de3b87aSKai Wang
117*2de3b87aSKai Wang Dwarf_Unsigned
_dwarf_elf_get_section_count(void * obj)118*2de3b87aSKai Wang _dwarf_elf_get_section_count(void *obj)
119*2de3b87aSKai Wang {
120*2de3b87aSKai Wang Dwarf_Elf_Object *e;
121*2de3b87aSKai Wang
122*2de3b87aSKai Wang e = obj;
123*2de3b87aSKai Wang assert(e != NULL);
124*2de3b87aSKai Wang
125*2de3b87aSKai Wang return (e->eo_seccnt);
126*2de3b87aSKai Wang }
127*2de3b87aSKai Wang
128*2de3b87aSKai Wang int
_dwarf_elf_load_section(void * obj,Dwarf_Half ndx,Dwarf_Small ** ret_data,int * error)129*2de3b87aSKai Wang _dwarf_elf_load_section(void *obj, Dwarf_Half ndx, Dwarf_Small** ret_data,
130*2de3b87aSKai Wang int *error)
131*2de3b87aSKai Wang {
132*2de3b87aSKai Wang Dwarf_Elf_Object *e;
133*2de3b87aSKai Wang Dwarf_Elf_Data *ed;
134*2de3b87aSKai Wang
135*2de3b87aSKai Wang e = obj;
136*2de3b87aSKai Wang assert(e != NULL);
137*2de3b87aSKai Wang
138*2de3b87aSKai Wang if (ret_data == NULL) {
139*2de3b87aSKai Wang if (error)
140*2de3b87aSKai Wang *error = DW_DLE_ARGUMENT;
141*2de3b87aSKai Wang return (DW_DLV_ERROR);
142*2de3b87aSKai Wang }
143*2de3b87aSKai Wang
144*2de3b87aSKai Wang if (ndx >= e->eo_seccnt) {
145*2de3b87aSKai Wang if (error)
146*2de3b87aSKai Wang *error = DW_DLE_NO_ENTRY;
147*2de3b87aSKai Wang return (DW_DLV_NO_ENTRY);
148*2de3b87aSKai Wang }
149*2de3b87aSKai Wang
150*2de3b87aSKai Wang ed = &e->eo_data[ndx];
151*2de3b87aSKai Wang
152*2de3b87aSKai Wang if (ed->ed_alloc != NULL)
153*2de3b87aSKai Wang *ret_data = ed->ed_alloc;
154*2de3b87aSKai Wang else {
155*2de3b87aSKai Wang if (ed->ed_data == NULL) {
156*2de3b87aSKai Wang if (error)
157*2de3b87aSKai Wang *error = DW_DLE_NO_ENTRY;
158*2de3b87aSKai Wang return (DW_DLV_NO_ENTRY);
159*2de3b87aSKai Wang }
160*2de3b87aSKai Wang *ret_data = ed->ed_data->d_buf;
161*2de3b87aSKai Wang }
162*2de3b87aSKai Wang
163*2de3b87aSKai Wang return (DW_DLV_OK);
164*2de3b87aSKai Wang }
165