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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
#source: tlsbinpic.s
#source: tlsbin.s
#as: --64
#ld: -shared -melf_x86_64
#objdump: -drj.text
#target: x86_64-*-*
# PT_TLS layout is:
# Offset from Offset from Name
# TCB base TCB end
# 0x00 -0xa0 sg1..sg8
# 0x20 -0x80 sl1..sl8
# 0x40 -0x60 sh1..sh8
# 0x60 -0x40 bg1..bg8
# 0x80 -0x20 bl1..bl8
.*: +file format elf64-x86-64
Disassembly of section .text:
0+401000 <fn2>:
401000: 55[ ]+push %rbp
401001: 48 89 e5[ ]+mov %rsp,%rbp
# GD -> IE because variable is not defined in executable
401004: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
40100b: 00 00 *
40100d: 48 03 05 c4 11 10 00[ ]+add 1053124\(%rip\),%rax +# 5021d8 <_GLOBAL_OFFSET_TABLE_\+0x38>
# -> R_X86_64_TPOFF64 sG1
401014: 90[ ]+nop *
401015: 90[ ]+nop *
401016: 90[ ]+nop *
401017: 90[ ]+nop *
# GD -> IE because variable is not defined in executable where
# the variable is referenced through IE too
401018: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
40101f: 00 00 *
401021: 48 03 05 a0 11 10 00[ ]+add 1053088\(%rip\),%rax +# 5021c8 <_GLOBAL_OFFSET_TABLE_\+0x28>
# -> R_X86_64_TPOFF64 sG2
401028: 90[ ]+nop *
401029: 90[ ]+nop *
40102a: 90[ ]+nop *
40102b: 90[ ]+nop *
# GD -> LE with global variable defined in executable
40102c: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
401033: 00 00 *
401035: 48 8d 80 60 ff ff ff[ ]+lea 0xf+60\(%rax\),%rax
# sg1
40103c: 90[ ]+nop *
40103d: 90[ ]+nop *
40103e: 90[ ]+nop *
40103f: 90[ ]+nop *
# GD -> LE with local variable defined in executable
401040: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
401047: 00 00 *
401049: 48 8d 80 80 ff ff ff[ ]+lea 0xf+80\(%rax\),%rax
# sl1
401050: 90[ ]+nop *
401051: 90[ ]+nop *
401052: 90[ ]+nop *
401053: 90[ ]+nop *
# GD -> LE with hidden variable defined in executable
401054: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
40105b: 00 00 *
40105d: 48 8d 80 a0 ff ff ff[ ]+lea 0xf+a0\(%rax\),%rax
# sh1
401064: 90[ ]+nop *
401065: 90[ ]+nop *
401066: 90[ ]+nop *
401067: 90[ ]+nop *
# LD -> LE
401068: 66 66 66 64 48 8b 04[ ]+mov %fs:0x0,%rax
40106f: 25 00 00 00 00 *
401074: 90[ ]+nop *
401075: 90[ ]+nop *
401076: 48 8d 90 81 ff ff ff[ ]+lea 0xf+81\(%rax\),%rdx
# sl1+1
40107d: 90[ ]+nop *
40107e: 90[ ]+nop *
40107f: 4c 8d 88 86 ff ff ff[ ]+lea 0xf+86\(%rax\),%r9
# sl2+2
401086: 90[ ]+nop *
401087: 90[ ]+nop *
401088: 90[ ]+nop *
401089: 90[ ]+nop *
# LD -> LE against hidden variables
40108a: 66 66 66 64 48 8b 04[ ]+mov %fs:0x0,%rax
401091: 25 00 00 00 00 *
401096: 90[ ]+nop *
401097: 90[ ]+nop *
401098: 48 8d 90 a0 ff ff ff[ ]+lea 0xf+a0\(%rax\),%rdx
# sh1
40109f: 90[ ]+nop *
4010a0: 90[ ]+nop *
4010a1: 48 8d 88 a7 ff ff ff[ ]+lea 0xf+a7\(%rax\),%rcx
# sh2+3
4010a8: 90[ ]+nop *
4010a9: 90[ ]+nop *
4010aa: 90[ ]+nop *
4010ab: 90[ ]+nop *
# IE against global var
4010ac: 64 4c 8b 0c 25 00 00[ ]+mov %fs:0x0,%r9
4010b3: 00 00 *
4010b5: 90[ ]+nop *
4010b6: 90[ ]+nop *
4010b7: 4c 03 0d 0a 11 10 00[ ]+add 1052938\(%rip\),%r9 +# 5021c8 <_GLOBAL_OFFSET_TABLE_\+0x28>
# -> R_X86_64_TPOFF64 sG2
4010be: 90[ ]+nop *
4010bf: 90[ ]+nop *
4010c0: 90[ ]+nop *
4010c1: 90[ ]+nop *
# IE -> LE against global var defined in exec
4010c2: 64 4c 8b 14 25 00 00[ ]+mov %fs:0x0,%r10
4010c9: 00 00 *
4010cb: 90[ ]+nop *
4010cc: 90[ ]+nop *
4010cd: 4d 8d 92 60 ff ff ff[ ]+lea 0xf+60\(%r10\),%r10
# sg1
4010d4: 90[ ]+nop *
4010d5: 90[ ]+nop *
4010d6: 90[ ]+nop *
4010d7: 90[ ]+nop *
# IE -> LE against local var
4010d8: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
4010df: 00 00 *
4010e1: 90[ ]+nop *
4010e2: 90[ ]+nop *
4010e3: 48 8d 80 80 ff ff ff[ ]+lea 0xf+80\(%rax\),%rax
# sl1
4010ea: 90[ ]+nop *
4010eb: 90[ ]+nop *
4010ec: 90[ ]+nop *
4010ed: 90[ ]+nop *
# IE -> LE against hidden var
4010ee: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
4010f5: 00 00 *
4010f7: 90[ ]+nop *
4010f8: 90[ ]+nop *
4010f9: 48 8d 89 a0 ff ff ff[ ]+lea 0xf+a0\(%rcx\),%rcx
# sh1
401100: 90[ ]+nop *
401101: 90[ ]+nop *
401102: 90[ ]+nop *
401103: 90[ ]+nop *
# Direct access through %fs
# IE against global var
401104: 48 8b 0d b5 10 10 00[ ]+mov 1052853\(%rip\),%rcx +# 5021c0 <_GLOBAL_OFFSET_TABLE_\+0x20>
# -> R_X86_64_TPOFF64 sG5
40110b: 90[ ]+nop *
40110c: 90[ ]+nop *
40110d: 64 48 8b 11[ ]+mov %fs:\(%rcx\),%rdx
401111: 90[ ]+nop *
401112: 90[ ]+nop *
401113: 90[ ]+nop *
401114: 90[ ]+nop *
# IE->LE against local var
401115: 49 c7 c3 90 ff ff ff[ ]+mov \$0xf+90,%r11
# sl5
40111c: 90[ ]+nop *
40111d: 90[ ]+nop *
40111e: 64 4d 8b 23[ ]+mov %fs:\(%r11\),%r12
401122: 90[ ]+nop *
401123: 90[ ]+nop *
401124: 90[ ]+nop *
401125: 90[ ]+nop *
# IE->LE against hidden var
401126: 48 c7 c2 b0 ff ff ff[ ]+mov \$0xf+b0,%rdx
40112d: 90[ ]+nop *
40112e: 90[ ]+nop *
40112f: 64 48 8b 12[ ]+mov %fs:\(%rdx\),%rdx
# sh5
401133: 90[ ]+nop *
401134: 90[ ]+nop *
401135: 90[ ]+nop *
401136: 90[ ]+nop *
401137: c9[ ]+leaveq *
401138: c3[ ]+retq *
401139: 90[ ]+nop *
40113a: 90[ ]+nop *
40113b: 90[ ]+nop *
0+40113c <_start>:
40113c: 55[ ]+push %rbp
40113d: 48 89 e5[ ]+mov %rsp,%rbp
# IE against global var
401140: 64 4c 8b 1c 25 00 00[ ]+mov %fs:0x0,%r11
401147: 00 00 *
401149: 90[ ]+nop *
40114a: 90[ ]+nop *
40114b: 4c 03 1d 7e 10 10 00[ ]+add 1052798\(%rip\),%r11 +# 5021d0 <_GLOBAL_OFFSET_TABLE_\+0x30>
# -> R_X86_64_TPOFF64 sG6
401152: 90[ ]+nop *
401153: 90[ ]+nop *
401154: 90[ ]+nop *
401155: 90[ ]+nop *
# IE -> LE against global var defined in exec
401156: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
40115d: 00 00 *
40115f: 90[ ]+nop *
401160: 90[ ]+nop *
401161: 48 8d 92 d4 ff ff ff[ ]+lea 0xf+d4\(%rdx\),%rdx
# bg6
401168: 90[ ]+nop *
401169: 90[ ]+nop *
40116a: 90[ ]+nop *
40116b: 90[ ]+nop *
# IE -> LE against local var
40116c: 64 4c 8b 24 25 00 00[ ]+mov %fs:0x0,%r12
401173: 00 00 *
401175: 90[ ]+nop *
401176: 90[ ]+nop *
401177: 49 81 c4 f4 ff ff ff[ ]+add \$0xf+f4,%r12
# bl6
40117e: 90[ ]+nop *
40117f: 90[ ]+nop *
401180: 90[ ]+nop *
401181: 90[ ]+nop *
# direct %fs access IE -> LE against local var
401182: 48 c7 c2 fc ff ff ff[ ]+mov \$0xf+fc,%rdx
# bl8
401189: 90[ ]+nop *
40118a: 90[ ]+nop *
40118b: 64 48 8b 02[ ]+mov %fs:\(%rdx\),%rax
40118f: 90[ ]+nop *
401190: 90[ ]+nop *
401191: 90[ ]+nop *
401192: 90[ ]+nop *
# IE -> LE against hidden but not local var
401193: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
40119a: 00 00 *
40119c: 90[ ]+nop *
40119d: 90[ ]+nop *
40119e: 48 8d 92 b4 ff ff ff[ ]+lea 0xf+b4\(%rdx\),%rdx
# sh6
4011a5: 90[ ]+nop *
4011a6: 90[ ]+nop *
4011a7: 90[ ]+nop *
4011a8: 90[ ]+nop *
# direct %fs access IE -> LE against hidden but not local var
4011a9: 48 c7 c2 bc ff ff ff[ ]+mov \$0xf+bc,%rdx
# sh8
4011b0: 90[ ]+nop *
4011b1: 90[ ]+nop *
4011b2: 64 48 8b 02[ ]+mov %fs:\(%rdx\),%rax
4011b6: 90[ ]+nop *
4011b7: 90[ ]+nop *
4011b8: 90[ ]+nop *
4011b9: 90[ ]+nop *
# LE, global var defined in exec
4011ba: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
4011c1: 00 00 *
4011c3: 90[ ]+nop *
4011c4: 90[ ]+nop *
4011c5: 48 8d 90 64 ff ff ff[ ]+lea 0xf+64\(%rax\),%rdx
# sg2
4011cc: 90[ ]+nop *
4011cd: 90[ ]+nop *
4011ce: 90[ ]+nop *
4011cf: 90[ ]+nop *
# LE, local var, non-canonical sequence
4011d0: 49 c7 c1 e6 ff ff ff[ ]+mov \$0xf+e6,%r9
# bl2+2
4011d7: 90[ ]+nop *
4011d8: 90[ ]+nop *
4011d9: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
4011e0: 00 00 *
4011e2: 90[ ]+nop *
4011e3: 90[ ]+nop *
4011e4: 4c 01 ca[ ]+add %r9,%rdx
4011e7: 90[ ]+nop *
4011e8: 90[ ]+nop *
4011e9: 90[ ]+nop *
4011ea: 90[ ]+nop *
# LE, hidden var defined in exec, non-canonical sequence
4011eb: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
4011f2: 00 00 *
4011f4: 90[ ]+nop *
4011f5: 90[ ]+nop *
4011f6: 48 81 c2 a5 ff ff ff[ ]+add \$0xf+a5,%rdx
# sh2+1
4011fd: 90[ ]+nop *
4011fe: 90[ ]+nop *
4011ff: 90[ ]+nop *
401200: 90[ ]+nop *
# Direct %fs access
# LE, global var defined in exec
401201: 64 48 8b 04 25 68 ff[ ]+mov %fs:0xf+68,%rax
401208: ff ff *
# sg3
40120a: 90[ ]+nop *
40120b: 90[ ]+nop *
40120c: 90[ ]+nop *
40120d: 90[ ]+nop *
# LE, local var
40120e: 64 4c 8b 14 25 eb ff[ ]+mov %fs:0xf+eb,%r10
401215: ff ff *
# bl3+3
401217: 90[ ]+nop *
401218: 90[ ]+nop *
401219: 90[ ]+nop *
40121a: 90[ ]+nop *
# LE, hidden var defined in exec
40121b: 64 48 8b 14 25 a9 ff[ ]+mov %fs:0xf+a9,%rdx
401222: ff ff *
# sh3+1
401224: 90[ ]+nop *
401225: 90[ ]+nop *
401226: 90[ ]+nop *
401227: 90[ ]+nop *
401228: c9[ ]+leaveq *
401229: c3[ ]+retq *
|