1// REQUIRES: arm
2// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
3// RUN: ld.lld %t.o -o %t.so -shared
4// RUN: llvm-readobj -S --dyn-relocations %t.so | FileCheck --check-prefix=SEC %s
5// RUN: llvm-objdump -d --triple=armv7a-linux-gnueabi %t.so | FileCheck %s
6
7/// Test the handling of the initial-exec TLS model. Relative location within
8/// static TLS is a run-time constant computed by dynamic loader as a result
9/// of the R_ARM_TLS_TPOFF32 relocation.
10
11 .syntax unified
12 .arm
13 .globl func
14 .type  func,%function
15 .p2align 2
16func:
17.L0:
18 nop
19.L1:
20 nop
21.L2:
22 nop
23
24 .p2align 2
25/// Generate R_ARM_TLS_IE32 static relocations
26/// Allocates a GOT entry dynamically relocated by R_ARM_TLS_TPOFF32
27/// literal contains the offset of the GOT entry from the place
28.Lt0: .word  x(gottpoff) + (. - .L0 - 8)
29.Lt1: .word  y(gottpoff) + (. - .L1 - 8)
30.Lt2: .word  .TLSSTART(gottpoff) + (. - .L2 - 8)
31
32/// __thread int x = 10
33/// __thread int y;
34/// __thread int z __attribute((visibility("hidden")))
35 .hidden z
36 .globl  z
37 .globl  y
38 .globl  x
39
40 .section       .tbss,"awT",%nobits
41 .p2align  2
42.TLSSTART:
43 .type  z, %object
44z:
45 .space 4
46 .type  y, %object
47y:
48 .space 4
49 .section       .tdata,"awT",%progbits
50 .p2align 2
51 .type  x, %object
52x:
53 .word  10
54
55// SEC:      Name: .tdata
56// SEC-NEXT: Type: SHT_PROGBITS
57// SEC-NEXT: Flags [
58// SEC-NEXT:   SHF_ALLOC
59// SEC-NEXT:   SHF_TLS
60// SEC-NEXT:   SHF_WRITE
61// SEC:      Size: 4
62// SEC:      Name: .tbss
63// SEC-NEXT: Type: SHT_NOBITS
64// SEC-NEXT: Flags [
65// SEC-NEXT:   SHF_ALLOC
66// SEC-NEXT:   SHF_TLS
67// SEC-NEXT:   SHF_WRITE
68// SEC: Size: 8
69
70// SEC:      Name: .got
71// SEC-NEXT: Type: SHT_PROGBITS
72// SEC-NEXT: Flags [
73// SEC-NEXT:    SHF_ALLOC
74// SEC-NEXT:    SHF_WRITE
75// SEC-NEXT: ]
76// SEC-NEXT: Address: 0x20254
77// SEC:      Size: 12
78
79
80// SEC: Dynamic Relocations {
81// SEC:  0x2025C R_ARM_TLS_TPOFF32
82// SEC:  0x20254 R_ARM_TLS_TPOFF32 x
83// SEC:  0x20258 R_ARM_TLS_TPOFF32 y
84
85// CHECK: Disassembly of section .text:
86// CHECK-EMPTY:
87// CHECK-NEXT: <func>:
88// CHECK-NEXT:    101e8: 00 f0 20 e3     nop
89// CHECK-NEXT:    101ec: 00 f0 20 e3     nop
90// CHECK-NEXT:    101f0: 00 f0 20 e3     nop
91
92/// (0x20254 - 0x101f4) + (0x101f4 - 0x101e8 - 8) = 0x10064
93// CHECK:         101f4: 64 00 01 00
94/// (0x20258 - 0x101f8) + (0x101f8 - 0x101ec - 8) = 0x10064
95// CHECK-NEXT:    101f8: 64 00 01 00
96/// (0x2025c - 0x101f8) + (0x101f8 - 0x101f0 - 8) = 0x10064
97// CHECK-NEXT:    101fc: 64 00 01 00
98