| # REQUIRES: x86 |
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o |
| |
| # RUN: ld.lld -shared %t.o -o %t.so |
| # RUN: llvm-readobj -r %t.so | FileCheck --check-prefix=LD-REL %s |
| # RUN: llvm-objdump -d --no-show-raw-insn %t.so | FileCheck --check-prefix=LD %s |
| |
| # RUN: ld.lld %t.o -o %t |
| # RUN: llvm-readelf -r %t | FileCheck --check-prefix=NOREL %s |
| # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefix=LE %s |
| |
| ## Check _TLS_MODULE_BASE_ used by LD produces a dynamic relocation with a value of 0. |
| # LD-REL: .rela.dyn { |
| # LD-REL-NEXT: 0x2318 R_X86_64_TLSDESC - 0x0 |
| # LD-REL-NEXT: } |
| |
| ## 0x2318-0x1267 = 4273 |
| ## dtpoff(a) = 8, dtpoff(b) = 12 |
| # LD: leaq 4273(%rip), %rax |
| # LD-NEXT: 1267: callq *(%rax) |
| # LD-NEXT: movl %fs:8(%rax), %edx |
| # LD-NEXT: addl %fs:12(%rax), %edx |
| |
| ## When producing an executable, the LD code sequence can be relaxed to LE. |
| ## It is the same as GD->LE. |
| ## tpoff(_TLS_MODULE_BASE_) = 0, tpoff(a) = -8, tpoff(b) = -4 |
| |
| # NOREL: no relocations |
| |
| # LE: movq $0, %rax |
| # LE-NEXT: nop |
| # LE-NEXT: movl %fs:-8(%rax), %edx |
| # LE-NEXT: addl %fs:-4(%rax), %edx |
| |
| leaq _TLS_MODULE_BASE_@tlsdesc(%rip), %rax |
| call *_TLS_MODULE_BASE_@tlscall(%rax) |
| movl %fs:a@dtpoff(%rax), %edx |
| addl %fs:b@dtpoff(%rax), %edx |
| |
| .section .tbss |
| .zero 8 |
| a: |
| .zero 4 |
| b: |
| .zero 4 |