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
|
// REQUIRES: arm
// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
// RUN: ld.lld %t.o -o %t
// RUN: llvm-readobj -S --dyn-relocations %t | FileCheck --check-prefix=SEC %s
// RUN: llvm-objdump -d --triple=armv7a-linux-gnueabi %t | FileCheck %s
/// Test the handling of the local exec TLS model. TLS can be resolved
/// statically for an application. The code sequences assume a thread pointer
/// in r9
.text
.syntax unified
.globl _start
.p2align 2
.type _start,%function
_start:
.p2align 2
/// Generate R_ARM_TLS_LE32 relocations. These resolve statically to the offset
/// of the variable from the thread pointer
.Lt0: .word x(TPOFF)
.Lt1: .word y(TPOFF)
.Lt2: .word z(TPOFF)
/// __thread int x = 10
/// __thread int y;
/// __thread int z __attribute((visibility("hidden")))
.hidden z
.globl z
.globl y
.globl x
.section .tbss,"awT",%nobits
.p2align 2
.TLSSTART:
.type z, %object
z:
.space 4
.type y, %object
y:
.space 4
.section .tdata,"awT",%progbits
.p2align 2
.type x, %object
x:
.word 10
// SEC: Name: .tdata
// SEC-NEXT: Type: SHT_PROGBITS
// SEC-NEXT: Flags [
// SEC-NEXT: SHF_ALLOC
// SEC-NEXT: SHF_TLS
// SEC-NEXT: SHF_WRITE
// SEC-NEXT: ]
// SEC-NEXT: Address: 0x30120
// SEC: Size: 4
// SEC: Name: .tbss
// SEC-NEXT: Type: SHT_NOBITS
// SEC-NEXT: Flags [
// SEC-NEXT: SHF_ALLOC
// SEC-NEXT: SHF_TLS
// SEC-NEXT: SHF_WRITE
// SEC-NEXT: ]
// SEC-NEXT: Address: 0x30124
// SEC: Size: 8
// SEC: Dynamic Relocations {
// SEC-NEXT: }
// CHECK: Disassembly of section .text:
// CHECK-EMPTY:
// CHECK-NEXT: <_start>:
/// offset of x from Thread pointer = (TcbSize + 0x0 = 0x8)
// CHECK-NEXT: 20114: 08 00 00 00
/// offset of z from Thread pointer = (TcbSize + 0x8 = 0x10)
// CHECK-NEXT: 20118: 10 00 00 00
/// offset of y from Thread pointer = (TcbSize + 0x4 = 0xc)
// CHECK-NEXT: 2011c: 0c 00 00 00
|
