| // REQUIRES: arm |
| // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi |
| // RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared |
| // RUN: llvm-readobj -s -dyn-relocations %t.so | FileCheck --check-prefix=SEC %s |
| // RUN: llvm-objdump -d -triple=armv7a-linux-gnueabi %t.so | FileCheck %s |
| |
| // Test the handling of the initial-exec TLS model. Relative location within |
| // static TLS is a run-time constant computed by dynamic loader as a result |
| // of the R_ARM_TLS_TPOFF32 relocation. |
| |
| .syntax unified |
| .arm |
| .globl func |
| .type func,%function |
| .p2align 2 |
| func: |
| .L0: |
| nop |
| .L1: |
| nop |
| .L2: |
| nop |
| |
| .p2align 2 |
| // Generate R_ARM_TLS_IE32 static relocations |
| // Allocates a GOT entry dynamically relocated by R_ARM_TLS_TPOFF32 |
| // literal contains the offset of the GOT entry from the place |
| .Lt0: .word x(gottpoff) + (. - .L0 - 8) |
| .Lt1: .word y(gottpoff) + (. - .L1 - 8) |
| .Lt2: .word .TLSSTART(gottpoff) + (. - .L2 - 8) |
| |
| // __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: 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: Size: 8 |
| |
| // SEC: Name: .got |
| // SEC-NEXT: Type: SHT_PROGBITS |
| // SEC-NEXT: Flags [ |
| // SEC-NEXT: SHF_ALLOC |
| // SEC-NEXT: SHF_WRITE |
| // SEC-NEXT: ] |
| // SEC-NEXT: Address: 0x204C |
| // SEC: Size: 12 |
| |
| |
| // SEC: Dynamic Relocations { |
| // SEC: 0x2054 R_ARM_TLS_TPOFF32 |
| // SEC: 0x204C R_ARM_TLS_TPOFF32 x |
| // SEC: 0x2050 R_ARM_TLS_TPOFF32 y |
| |
| // CHECK: Disassembly of section .text: |
| // CHECK-NEXT: func: |
| // CHECK-NEXT: 1000: 00 f0 20 e3 nop |
| // CHECK-NEXT: 1004: 00 f0 20 e3 nop |
| // CHECK-NEXT: 1008: 00 f0 20 e3 nop |
| |
| // (0x204c - 0x100c) + (0x100c - 0x1000 - 8) = 0x1044 |
| // CHECK: 100c: 44 10 00 00 |
| // (0x2050 - 0x1010) + (0x1010 - 0x1004 - 8) = 0x1044 |
| // CHECK-NEXT: 1010: 44 10 00 00 |
| // (0x2054 - 0x1014) + (0x1014 - 0x1008 - 8) = 0x1044 |
| // CHECK-NEXT: 1014: 44 10 00 00 |
