| // 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 |
| |
| /// Reject local-exec TLS relocations for -shared. |
| // RUN: not ld.lld -shared %t.o -o /dev/null 2>&1 | FileCheck %s --check-prefix=ERR --implicit-check-not=error: |
| |
| // ERR: error: relocation R_ARM_TLS_LE32 against x cannot be used with -shared |
| // ERR: error: relocation R_ARM_TLS_LE32 against y cannot be used with -shared |
| // ERR: error: relocation R_ARM_TLS_LE32 against z cannot be used with -shared |
| |
| .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 |
