1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*******************************************************************/
/* slibtool: a strong libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <slibtool/slibtool.h>
#include <slibtool/slibtool_arbits.h>
#include "slibtool_ar_impl.h"
#include "slibtool_driver_impl.h"
#include "slibtool_errinfo_impl.h"
#include "slibtool_visibility_impl.h"
slbt_hidden int slbt_ar_parse_primary_armap_bsd_64(
const struct slbt_driver_ctx * dctx,
struct slbt_archive_meta_impl * m)
{
struct ar_raw_armap_bsd_64 * armap;
struct ar_meta_member_info * memberp;
struct ar_meta_armap_common_64 *armapref;
struct ar_meta_armap_ref_64 * symrefs;
uint64_t idx;
uint64_t uref_hi;
uint64_t uref_lo;
uint32_t attr;
uint64_t u64_lo;
uint64_t u64_hi;
uint64_t nsyms;
uint64_t nstrs;
uint64_t sizeofrefs_le;
uint64_t sizeofrefs_be;
uint64_t sizeofrefs;
uint64_t sizeofstrs;
const char * ch;
const char * cap;
unsigned char * uch;
unsigned char (*mark)[0x08];
armap = &m->armaps.armap_bsd_64;
memberp = m->memberv[0];
mark = memberp->ar_object_data;
armap->ar_size_of_refs = mark;
uch = *mark++;
armap->ar_first_name_offset = mark;
u64_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
u64_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
sizeofrefs_le = u64_lo + (u64_hi << 32);
u64_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
u64_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
sizeofrefs_be = (u64_hi << 32) + u64_lo;
if (sizeofrefs_le < memberp->ar_object_size - sizeof(*mark)) {
sizeofrefs = sizeofrefs_le;
attr = AR_ARMAP_ATTR_LE_64;
} else if (sizeofrefs_be < memberp->ar_object_size - sizeof(*mark)) {
sizeofrefs = sizeofrefs_be;
attr = AR_ARMAP_ATTR_BE_64;
} else {
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_SIZE_OF_REFS);
}
nsyms = sizeofrefs / sizeof(struct ar_raw_armap_ref_64);
mark += (sizeofrefs / sizeof(*mark));
armap->ar_size_of_strs = mark;
uch = *mark++;
if (attr == AR_ARMAP_ATTR_LE_64) {
u64_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
u64_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
} else {
u64_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
u64_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
}
sizeofstrs = u64_lo + (u64_hi << 32);
m->symstrs = (const char *)mark;
cap = m->symstrs;
cap += sizeofstrs;
if ((cap == m->symstrs) && nsyms)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (nsyms && !m->symstrs[0])
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
for (ch=&m->symstrs[1],nstrs=0; ch<cap; ch++) {
if (!ch[0] && !ch[-1] && (nstrs < nsyms))
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (!ch[0] && ch[-1] && (nstrs < nsyms))
nstrs++;
}
if (nstrs != nsyms)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (!(m->symstrv = calloc(nsyms + 1,sizeof(const char *))))
return SLBT_SYSTEM_ERROR(dctx,0);
if (!(m->armaps.armap_symrefs_64 = calloc(nsyms + 1,sizeof(*symrefs))))
return SLBT_SYSTEM_ERROR(dctx,0);
mark = armap->ar_first_name_offset;
symrefs = m->armaps.armap_symrefs_64;
for (idx=0; idx<nsyms; idx++) {
uch = *mark++;
if (attr == AR_ARMAP_ATTR_BE_64) {
uref_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
uref_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
} else {
uref_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
uref_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
}
symrefs[idx].ar_name_offset = (uref_hi << 32) + uref_lo;
uch = *mark++;
if (attr == AR_ARMAP_ATTR_BE_64) {
uref_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
uref_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
} else {
uref_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
uref_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
}
symrefs[idx].ar_member_offset = (uref_hi << 32) + uref_lo;
}
armap->ar_string_table = m->symstrv;
armapref = &m->armaps.armap_common_64;
armapref->ar_member = memberp;
armapref->ar_symrefs = symrefs;
armapref->ar_armap_bsd = armap;
armapref->ar_armap_attr = AR_ARMAP_ATTR_BSD | attr;
armapref->ar_num_of_symbols = nsyms;
armapref->ar_size_of_refs = sizeofrefs;
armapref->ar_size_of_strs = sizeofstrs;
armapref->ar_string_table = m->symstrs;
m->armaps.armap_nsyms = nsyms;
m->armeta.a_armap_primary.ar_armap_common_64 = armapref;
return 0;
}
|
