|
150
|
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
|
|
|
4 // RUN: llvm-readobj -S --dyn-relocations %t | FileCheck --check-prefix=SEC %s
|
|
173
|
5 // RUN: llvm-objdump -d --triple=armv7a-linux-gnueabi %t | FileCheck %s
|
|
150
|
6
|
|
173
|
7 /// Test the handling of the local exec TLS model. TLS can be resolved
|
|
|
8 /// statically for an application. The code sequences assume a thread pointer
|
|
|
9 /// in r9
|
|
150
|
10
|
|
|
11 .text
|
|
|
12 .syntax unified
|
|
|
13 .globl _start
|
|
|
14 .p2align 2
|
|
|
15 .type _start,%function
|
|
|
16 _start:
|
|
|
17 .p2align 2
|
|
173
|
18 /// Generate R_ARM_TLS_LE32 relocations. These resolve statically to the offset
|
|
|
19 /// of the variable from the thread pointer
|
|
150
|
20 .Lt0: .word x(TPOFF)
|
|
|
21 .Lt1: .word y(TPOFF)
|
|
|
22 .Lt2: .word z(TPOFF)
|
|
|
23
|
|
173
|
24 /// __thread int x = 10
|
|
|
25 /// __thread int y;
|
|
|
26 /// __thread int z __attribute((visibility("hidden")))
|
|
150
|
27
|
|
|
28 .hidden z
|
|
|
29 .globl z
|
|
|
30 .globl y
|
|
|
31 .globl x
|
|
|
32
|
|
|
33 .section .tbss,"awT",%nobits
|
|
|
34 .p2align 2
|
|
|
35 .TLSSTART:
|
|
|
36 .type z, %object
|
|
|
37 z:
|
|
|
38 .space 4
|
|
|
39 .type y, %object
|
|
|
40 y:
|
|
|
41 .space 4
|
|
|
42 .section .tdata,"awT",%progbits
|
|
|
43 .p2align 2
|
|
|
44 .type x, %object
|
|
|
45 x:
|
|
|
46 .word 10
|
|
|
47
|
|
|
48 // SEC: Name: .tdata
|
|
|
49 // SEC-NEXT: Type: SHT_PROGBITS
|
|
|
50 // SEC-NEXT: Flags [
|
|
|
51 // SEC-NEXT: SHF_ALLOC
|
|
|
52 // SEC-NEXT: SHF_TLS
|
|
|
53 // SEC-NEXT: SHF_WRITE
|
|
|
54 // SEC-NEXT: ]
|
|
173
|
55 // SEC-NEXT: Address: 0x30120
|
|
150
|
56 // SEC: Size: 4
|
|
|
57 // SEC: Name: .tbss
|
|
|
58 // SEC-NEXT: Type: SHT_NOBITS
|
|
|
59 // SEC-NEXT: Flags [
|
|
|
60 // SEC-NEXT: SHF_ALLOC
|
|
|
61 // SEC-NEXT: SHF_TLS
|
|
|
62 // SEC-NEXT: SHF_WRITE
|
|
|
63 // SEC-NEXT: ]
|
|
173
|
64 // SEC-NEXT: Address: 0x30124
|
|
150
|
65 // SEC: Size: 8
|
|
|
66
|
|
|
67 // SEC: Dynamic Relocations {
|
|
|
68 // SEC-NEXT: }
|
|
|
69
|
|
|
70 // CHECK: Disassembly of section .text:
|
|
|
71 // CHECK-EMPTY:
|
|
173
|
72 // CHECK-NEXT: <_start>:
|
|
|
73 /// offset of x from Thread pointer = (TcbSize + 0x0 = 0x8)
|
|
|
74 // CHECK-NEXT: 20114: 08 00 00 00
|
|
|
75 /// offset of z from Thread pointer = (TcbSize + 0x8 = 0x10)
|
|
|
76 // CHECK-NEXT: 20118: 10 00 00 00
|
|
|
77 /// offset of y from Thread pointer = (TcbSize + 0x4 = 0xc)
|
|
|
78 // CHECK-NEXT: 2011c: 0c 00 00 00
|
