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
|
# Check R_MIPS_GOT16 relocation calculation.
# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
# RUN: ld.lld %t.o -shared -o %t.so
# RUN: llvm-objdump -d -t %t.so | FileCheck %s
# RUN: llvm-readobj -r -mips-plt-got %t.so | FileCheck -check-prefix=GOT %s
# REQUIRES: mips
# CHECK: Disassembly of section .text:
# CHECK-NEXT: __start:
# CHECK-NEXT: 10000: 8f 88 80 18 lw $8, -32744($gp)
# CHECK-NEXT: 10004: 21 08 00 2c addi $8, $8, 44
# CHECK-NEXT: 10008: 8f 88 80 24 lw $8, -32732($gp)
# CHECK-NEXT: 1000c: 21 08 90 00 addi $8, $8, -28672
# CHECK-NEXT: 10010: 8f 88 80 28 lw $8, -32728($gp)
# CHECK-NEXT: 10014: 21 08 90 04 addi $8, $8, -28668
# CHECK-NEXT: 10018: 8f 88 80 28 lw $8, -32728($gp)
# CHECK-NEXT: 1001c: 21 08 10 04 addi $8, $8, 4100
# CHECK-NEXT: 10020: 8f 88 80 30 lw $8, -32720($gp)
# CHECK-NEXT: 10024: 21 08 10 08 addi $8, $8, 4104
# CHECK-NEXT: 10028: 8f 88 80 34 lw $8, -32716($gp)
#
# CHECK: SYMBOL TABLE:
# CHECK: 00041008 .data 00000000 .hidden bar
# CHECK: 00000000 *UND* 00000000 foo
# GOT: Relocations [
# GOT-NEXT: ]
# GOT: Primary GOT {
# GOT-NEXT: Canonical gp value:
# GOT-NEXT: Reserved entries [
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32752
# GOT-NEXT: Initial: 0x0
# GOT-NEXT: Purpose: Lazy resolver
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32748
# GOT-NEXT: Initial: 0x80000000
# GOT-NEXT: Purpose: Module pointer (GNU extension)
# GOT-NEXT: }
# GOT-NEXT: ]
# GOT-NEXT: Local entries [
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32744
# GOT-NEXT: Initial: 0x10000
# ^-- (0x1002c + 0x8000) & ~0xffff
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32740
# GOT-NEXT: Initial: 0x20000
# ^-- redundant unused entry
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32736
# GOT-NEXT: Initial: 0x20000
# ^-- redundant unused entry
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32732
# GOT-NEXT: Initial: 0x30000
# ^-- (0x29000 + 0x8000) & ~0xffff
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32728
# GOT-NEXT: Initial: 0x40000
# ^-- (0x29000 + 0x10004 + 0x8000) & ~0xffff
# ^-- (0x29000 + 0x18004 + 0x8000) & ~0xffff
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32724
# GOT-NEXT: Initial: 0x50000
# ^-- redundant unused entry
# GOT-NEXT: }
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32720
# GOT-NEXT: Initial: 0x41008
# ^-- 'bar' address
# GOT-NEXT: }
# GOT-NEXT: ]
# GOT-NEXT: Global entries [
# GOT-NEXT: Entry {
# GOT-NEXT: Address:
# GOT-NEXT: Access: -32716
# GOT-NEXT: Initial: 0x0
# GOT-NEXT: Value: 0x0
# GOT-NEXT: Type: None
# GOT-NEXT: Section: Undefined
# GOT-NEXT: Name: foo@
# GOT-NEXT: }
# GOT-NEXT: ]
# GOT-NEXT: Number of TLS and multi-GOT entries: 0
# GOT-NEXT: }
.text
.globl __start
__start:
lw $t0,%got($LC0)($gp)
addi $t0,$t0,%lo($LC0)
lw $t0,%got($LC1)($gp)
addi $t0,$t0,%lo($LC1)
lw $t0,%got($LC1+0x10004)($gp)
addi $t0,$t0,%lo($LC1+0x10004)
lw $t0,%got($LC1+0x18004)($gp)
addi $t0,$t0,%lo($LC1+0x18004)
lw $t0,%got(bar)($gp)
addi $t0,$t0,%lo(bar)
lw $t0,%got(foo)($gp)
$LC0:
nop
.data
.space 0x9000
$LC1:
.word 0
.space 0x18000
.word 0
.global bar
.hidden bar
bar:
.word 0
|
