| // 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: 0x12000 |
| // 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: 0x12004 |
| // SEC: Size: 8 |
| |
| // SEC: Dynamic Relocations { |
| // SEC-NEXT: } |
| |
| // CHECK: Disassembly of section .text: |
| // CHECK-NEXT: _start: |
| // offset of x from Thread pointer = (TcbSize + 0x0 = 0x8) |
| // CHECK-NEXT: 11000: 08 00 00 00 |
| // offset of z from Thread pointer = (TcbSize + 0x8 = 0x10) |
| // CHECK-NEXT: 11004: 10 00 00 00 |
| // offset of y from Thread pointer = (TcbSize + 0x4 = 0xc) |
| // CHECK-NEXT: 11008: 0c 00 00 00 |
