partition-synthetic-sections.s
11 KB
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
// Test that synthetic sections are created correctly for each partition.
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/verneed1.s -o %t1.o
// RUN: echo "v1 {}; v2 {}; v3 { local: *; };" > %t1.script
// RUN: ld.lld -shared %t1.o --version-script %t1.script -o %t1.so -soname verneed1.so.0 -z separate-code
// RUN: llvm-mc %s -o %t.o -filetype=obj --triple=x86_64-unknown-linux
// RUN: echo "x1 { global: p0; }; x2 { global: p1; p1alias; };" > %t.script
// RUN: ld.lld %t.o %t1.so --version-script %t.script -o %t --shared --gc-sections --eh-frame-hdr -soname main.so -z separate-code
// RUN: llvm-objcopy --extract-main-partition %t %t0
// RUN: llvm-objcopy --extract-partition=part1 %t %t1
// RUN: llvm-readelf --all --unwind %t0 | FileCheck --check-prefixes=CHECK,PART0 %s
// RUN: llvm-readelf --all --unwind %t1 | FileCheck --check-prefixes=CHECK,PART1 %s
// FIXME: llvm-objcopy does not preserve padding (see pr42145) so for now we
// check the combined output file.
// RUN: od -Ax -x %t | FileCheck %s -check-prefix=FILL
// RUN: llvm-objdump -s -j .rodata -j .dynstr %t0 | FileCheck --check-prefix=PART-INDEX %s
// CHECK: Section Headers:
// CHECK-NEXT: Name
// CHECK-NEXT: NULL
// CHECK-NEXT: .dynsym DYNSYM {{0*}}[[DYNSYM_ADDR:[^ ]*]]
// CHECK-NEXT: .gnu.version VERSYM {{0*}}[[VERSYM_ADDR:[^ ]*]]
// CHECK-NEXT: .gnu.version_d VERDEF {{0*}}[[VERDEF_ADDR:[^ ]*]]
// CHECK-NEXT: .gnu.version_r VERNEED {{0*}}[[VERNEED_ADDR:[^ ]*]]
// CHECK-NEXT: .gnu.hash GNU_HASH {{0*}}[[GNU_HASH_ADDR:[^ ]*]]
// CHECK-NEXT: .hash HASH {{0*}}[[HASH_ADDR:[^ ]*]]
// CHECK-NEXT: .dynstr STRTAB {{0*}}[[DYNSTR_ADDR:[^ ]*]]
// CHECK-NEXT: .rela.dyn RELA {{0*}}[[RELA_DYN_ADDR:[^ ]*]]
// PART0-NEXT: .rela.plt RELA {{0*}}[[RELA_PLT_ADDR:[^ ]*]]
// CHECK-NEXT: .eh_frame_hdr PROGBITS {{0*}}[[EH_FRAME_HDR_ADDR:[^ ]*]]
// CHECK-NEXT: .eh_frame PROGBITS {{0*}}[[EH_FRAME_ADDR:[^ ]*]]
// PART0-NEXT: .rodata PROGBITS
// CHECK-NEXT: .text PROGBITS {{0*}}[[TEXT_ADDR:[^ ]*]]
// PART0-NEXT: .plt PROGBITS
// PART0-NEXT: .init_array INIT_ARRAY {{0*}}[[INIT_ARRAY_ADDR:[^ ]*]]
// CHECK-NEXT: .dynamic DYNAMIC {{0*}}[[DYNAMIC_ADDR:[^ ]*]]
// PART0-NEXT: .data PROGBITS 000000000000[[DATA_SEGMENT:.]]178
// PART1-NEXT: .data PROGBITS 000000000000[[DATA_SEGMENT:.]]130
// PART0-NEXT: .got.plt PROGBITS {{0*}}[[GOT_PLT_ADDR:[^ ]*]]
// PART0-NEXT: .part.end NOBITS {{0*}}[[PART_END_ADDR:[^ ]*]]
// CHECK-NEXT: .comment PROGBITS
// CHECK-NEXT: .symtab SYMTAB
// CHECK-NEXT: .shstrtab STRTAB
// CHECK-NEXT: .strtab STRTAB
// CHECK-NEXT: Key to Flags
// CHECK: Program Headers:
// CHECK-NEXT: Type
// PART0-NEXT: PHDR {{.*}} 0x000230 0x000230 R
// PART1-NEXT: PHDR {{.*}} 0x0001f8 0x0001f8 R
// PART0-NEXT: LOAD 0x000000 0x0000000000000000 0x0000000000000000 {{.*}} R 0x1000
// PART0-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000001000 {{.*}} R E 0x1000
// PART0-NEXT: LOAD 0x002000 0x0000000000002000 0x0000000000002000 {{.*}} RW 0x1000
// PART0-NEXT: LOAD 0x002178 0x0000000000003178 0x0000000000003178 {{.*}} RW 0x1000
// PART0-NEXT: LOAD 0x003150 0x0000000000008150 0x0000000000008150 0x000000 0x001000 RW 0x1000
// PART1-NEXT: LOAD 0x000000 0x0000000000004000 0x0000000000004000 {{.*}} R 0x1000
// PART1-NEXT: LOAD 0x001000 0x0000000000005000 0x0000000000005000 {{.*}} R E 0x1000
// PART1-NEXT: LOAD 0x002000 0x0000000000006000 0x0000000000006000 {{.*}} RW 0x1000
// PART1-NEXT: LOAD 0x002130 0x0000000000007130 0x0000000000007130 {{.*}} RW 0x1000
// CHECK-NEXT: DYNAMIC {{.*}} 0x{{0*}}[[DYNAMIC_ADDR]] 0x{{0*}}[[DYNAMIC_ADDR]] {{.*}} RW 0x8
// PART0-NEXT: GNU_RELRO 0x002000 0x0000000000002000 0x0000000000002000 {{.*}} R 0x1
// PART1-NEXT: GNU_RELRO 0x002000 0x0000000000006000 0x0000000000006000 {{.*}} R 0x1
// CHECK-NEXT: GNU_EH_FRAME {{.*}} 0x{{0*}}[[EH_FRAME_HDR_ADDR]] 0x{{0*}}[[EH_FRAME_HDR_ADDR]] {{.*}} R 0x4
// CHECK-NEXT: GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW 0x0
// CHECK-EMPTY:
// CHECK: Dynamic section
// CHECK-NEXT: Tag
// CHECK-NEXT: 0x0000000000000001 (NEEDED) Shared library: [verneed1.so.0]
// PART0-NEXT: 0x000000000000000e (SONAME) Library soname: [main.so]
// PART1-NEXT: 0x0000000000000001 (NEEDED) Shared library: [main.so]
// PART1-NEXT: 0x000000000000000e (SONAME) Library soname: [part1]
// CHECK-NEXT: 0x0000000000000007 (RELA) 0x[[RELA_DYN_ADDR]]
// CHECK-NEXT: 0x0000000000000008 (RELASZ)
// CHECK-NEXT: 0x0000000000000009 (RELAENT) 24 (bytes)
// PART1-NEXT: 0x000000006ffffff9 (RELACOUNT) 1
// PART0-NEXT: 0x0000000000000017 (JMPREL) 0x[[RELA_PLT_ADDR]]
// PART0-NEXT: 0x0000000000000002 (PLTRELSZ) 48 (bytes)
// PART0-NEXT: 0x0000000000000003 (PLTGOT) 0x[[GOT_PLT_ADDR]]
// PART0-NEXT: 0x0000000000000014 (PLTREL) RELA
// CHECK-NEXT: 0x0000000000000006 (SYMTAB) 0x[[DYNSYM_ADDR]]
// CHECK-NEXT: 0x000000000000000b (SYMENT) 24 (bytes)
// CHECK-NEXT: 0x0000000000000005 (STRTAB) 0x[[DYNSTR_ADDR]]
// CHECK-NEXT: 0x000000000000000a (STRSZ)
// CHECK-NEXT: 0x000000006ffffef5 (GNU_HASH) 0x[[GNU_HASH_ADDR]]
// CHECK-NEXT: 0x0000000000000004 (HASH) 0x[[HASH_ADDR]]
// PART0-NEXT: 0x0000000000000019 (INIT_ARRAY) 0x[[INIT_ARRAY_ADDR]]
// PART0-NEXT: 0x000000000000001b (INIT_ARRAYSZ) 8 (bytes)
// CHECK-NEXT: 0x000000006ffffff0 (VERSYM) 0x[[VERSYM_ADDR]]
// CHECK-NEXT: 0x000000006ffffffc (VERDEF) 0x[[VERDEF_ADDR]]
// CHECK-NEXT: 0x000000006ffffffd (VERDEFNUM) 3
// CHECK-NEXT: 0x000000006ffffffe (VERNEED) 0x[[VERNEED_ADDR]]
// CHECK-NEXT: 0x000000006fffffff (VERNEEDNUM) 1
// PART0-NEXT: 0x0000000000000000 (NULL) 0x0
// CHECK: Relocation section '.rela.dyn'
// CHECK-NEXT: Offset
// PART0-NEXT: 000000000000[[DATA_SEGMENT]]178 {{.*}} R_X86_64_64 {{.*}} f1@v3 + 0
// PART0-NEXT: {{0*}}[[INIT_ARRAY_ADDR]] {{.*}} R_X86_64_64 {{.*}} p0@@x1 + 0
// PART1-NEXT: 000000000000[[DATA_SEGMENT]]148 {{.*}} R_X86_64_RELATIVE 3178
// PART1-NEXT: 000000000000[[DATA_SEGMENT]]130 {{.*}} R_X86_64_64 {{.*}} f2@v2 + 0
// PART1-NEXT: 000000000000[[DATA_SEGMENT]]138 {{.*}} R_X86_64_64 {{.*}} p0@@x1 + 0
// PART1-NEXT: 000000000000[[DATA_SEGMENT]]140 {{.*}} R_X86_64_64 {{.*}} p0@@x1 + 0
// PART0: Relocation section '.rela.plt'
// PART0-NEXT: Offset
// PART0-NEXT: 000000000000[[DATA_SEGMENT]]198 {{.*}} R_X86_64_JUMP_SLOT {{.*}} f1@v3 + 0
// PART0-NEXT: 000000000000[[DATA_SEGMENT]]1a0 {{.*}} R_X86_64_JUMP_SLOT {{.*}} f2@v2 + 0
// CHECK-NEXT: EHFrameHeader
// CHECK: Address: 0x[[EH_FRAME_HDR_ADDR]]
// CHECK: eh_frame_ptr: 0x[[EH_FRAME_ADDR]]
// CHECK: initial_location: 0x[[TEXT_ADDR]]
// CHECK: address: 0x[[FDE_ADDR:.*]]
// CHECK: .eh_frame section
// CHECK: 0x[[EH_FRAME_ADDR]]] CIE length=20
// CHECK-NOT: FDE
// CHECK: 0x[[FDE_ADDR]]] FDE length=20 cie={{.}}0x[[EH_FRAME_ADDR]]
// CHECK-NEXT: initial_location: 0x[[TEXT_ADDR]]
// CHECK-NOT: FDE
// CHECK: CIE length=0
// CHECK: Symbol table '.dynsym'
// PART0: 1: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND f1@v3
// PART0: 2: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND f2@v2
// PART0: 3: {{0*}}[[TEXT_ADDR]] 0 NOTYPE GLOBAL DEFAULT {{.*}} p0@@x1
// PART1: 1: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND f2@v2
// PART1: 2: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND p0@@x1
// PART1: 3: {{0*}}[[TEXT_ADDR]] 0 NOTYPE GLOBAL DEFAULT {{.*}} p1@@x2
// PART1: 4: {{0*}}[[TEXT_ADDR]] 0 NOTYPE GLOBAL DEFAULT {{.*}} p1alias@@x2
// CHECK-EMPTY:
// PART0: Symbol table '.symtab'
// PART0: 000000000000048c 0 NOTYPE LOCAL HIDDEN {{.*}} __part_index_begin
// PART0: 0000000000000498 0 NOTYPE LOCAL HIDDEN {{.*}} __part_index_end
// PART-INDEX: Contents of section .dynstr:
// PART-INDEX-NEXT: 03a8 00663100 66320070 30007061 72743100 .f1.f2.p0.part1.
// PART-INDEX: Contents of section .rodata:
// 0x48c + 0xffffff26 = 0x3b2
// 0x490 + 0x3b70 = 0x4000
// PART-INDEX-NEXT: 048c 26ffffff 703b0000 50410000
// CHECK: Version symbols section '.gnu.version'
// CHECK-NEXT: Addr:
// PART0-NEXT: 000: 0 (*local*) 4 (v3) 5 (v2) 2 (x1)
// PART1-NEXT: 000: 0 (*local*) 5 (v2) 2 (x1) 3 (x2)
// CHECK: Version definition section '.gnu.version_d'
// CHECK-NEXT: Addr:
// PART0-NEXT: 0x0000: Rev: 1 Flags: BASE Index: 1 Cnt: 1 Name: main.so
// PART1-NEXT: 0x0000: Rev: 1 Flags: BASE Index: 1 Cnt: 1 Name: part1
// CHECK-NEXT: 0x001c: Rev: 1 Flags: none Index: 2 Cnt: 1 Name: x1
// CHECK-NEXT: 0x0038: Rev: 1 Flags: none Index: 3 Cnt: 1 Name: x2
// CHECK: Version needs section '.gnu.version_r'
// CHECK-NEXT: Addr:
// CHECK-NEXT: 0x0000: Version: 1 File: verneed1.so.0 Cnt: 2
// CHECK-NEXT: 0x0010: Name: v2 Flags: none Version: 5
// CHECK-NEXT: 0x0020: Name: v3 Flags: none Version: 4
// PART0: Histogram for bucket list length (total of 4 buckets)
// PART0-NEXT: Length Number % of total Coverage
// PART0-NEXT: 0 1 ( 25.0%) 0.0%
// PART0-NEXT: 1 3 ( 75.0%) 100.0%
// PART0-NEXT: Histogram for `.gnu.hash' bucket list length (total of 1 buckets)
// PART0-NEXT: Length Number % of total Coverage
// PART0-NEXT: 0 0 ( 0.0%) 0.0%
// PART0-NEXT: 1 1 (100.0%) 100.0%
// PART1: Histogram for bucket list length (total of 5 buckets)
// PART1-NEXT: Length Number % of total Coverage
// PART1-NEXT: 0 3 ( 60.0%) 0.0%
// PART1-NEXT: 1 2 ( 40.0%) 100.0%
// PART1-NEXT: Histogram for `.gnu.hash' bucket list length (total of 1 buckets)
// PART1-NEXT: Length Number % of total Coverage
// PART1-NEXT: 0 0 ( 0.0%) 0.0%
// PART1-NEXT: 1 0 ( 0.0%) 0.0%
// PART1-NEXT: 2 1 (100.0%) 100.0%
// FILL: 001040 cccc cccc cccc cccc cccc cccc cccc cccc
// FILL-NEXT: *
// FILL-NEXT: 002000
// FILL: 004010 cccc cccc cccc cccc cccc cccc cccc cccc
// FILL-NEXT: *
// FILL-NEXT: 005000
.section .llvm_sympart,"",@llvm_sympart
.asciz "part1"
.quad p1
.section .llvm_sympart2,"",@llvm_sympart
.asciz "part1"
.quad p1alias
.section .text.p0,"ax",@progbits
.globl p0
p0:
.cfi_startproc
lea d0(%rip), %rax
call f1
ret
.cfi_endproc
.section .data.d0,"aw",@progbits
d0:
.quad f1
.section .text.p1,"ax",@progbits
.globl p1
p1:
.globl p1alias
p1alias:
.cfi_startproc
lea d1(%rip), %rax
call f2
ret
.cfi_endproc
.section .data.d1,"aw",@progbits
d1:
.quad f2
.quad p0
.quad p0
.quad d0
.section .init_array,"aw",@init_array
.quad p0
.globl __part_index_begin
.globl __part_index_end