| // REQUIRES: arm |
| // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi |
| // RUN: ld.lld %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 global-dynamic TLS model. Dynamic Loader finds |
| /// module index R_ARM_TLS_DTPMOD32 and the offset within the module |
| /// R_ARM_TLS_DTPOFF32. One of the variables is hidden which permits relaxation |
| /// to local dynamic |
| |
| .text |
| .syntax unified |
| .globl func |
| .p2align 2 |
| .type func,%function |
| func: |
| .L0: |
| nop |
| .L1: |
| nop |
| .L2: |
| nop |
| |
| .p2align 2 |
| /// Generate R_ARM_TLS_GD32 relocations |
| /// Allocates a pair of GOT entries dynamically relocated by R_ARM_TLS_DTPMOD32 |
| /// and R_ARM_TLS_DTPOFF32 respectively. The literal contains the offset of the |
| /// first GOT entry from the place |
| .Lt0: .word x(TLSGD) + (. - .L0 - 8) |
| .Lt1: .word y(TLSGD) + (. - .L1 - 8) |
| .Lt2: .word z(TLSGD) + (. - .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-NEXT: ] |
| // SEC-NEXT: Address: 0x20210 |
| // 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: 0x20214 |
| // 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: 0x20264 |
| // SEC: Size: 24 |
| |
| // SEC: Dynamic Relocations { |
| // SEC-NEXT: 0x20274 R_ARM_TLS_DTPMOD32 - |
| // SEC-NEXT: 0x20264 R_ARM_TLS_DTPMOD32 x |
| // SEC-NEXT: 0x20268 R_ARM_TLS_DTPOFF32 x |
| // SEC-NEXT: 0x2026C R_ARM_TLS_DTPMOD32 y |
| // SEC-NEXT: 0x20270 R_ARM_TLS_DTPOFF32 y |
| |
| |
| // CHECK-LABEL: 000101f8 <func>: |
| // CHECK-NEXT: 101f8: 00 f0 20 e3 nop |
| // CHECK-NEXT: 101fc: 00 f0 20 e3 nop |
| // CHECK-NEXT: 10200: 00 f0 20 e3 nop |
| |
| /// (0x20264 - 0x1204) + (0x10204 - 0x101f8 - 8) = 0x1f064 |
| // CHECK: 10204: 64 00 01 00 |
| /// (0x2026c - 0x10204) + (0x10204 - 0x101fc - 8) = 0x10068 |
| // CHECK-NEXT: 10208: 68 00 01 00 |
| /// (0x20274 - 0x10204) + (0x10204 - 0x10200 - 8) = 0x1006c |
| // CHECK-NEXT: 1020c: 6c 00 01 00 |
| |
