lld/test/ELF/tls-weak-undef.s

   1 # REQUIRES: x86
   2
   3 # RUN: split-file %s %t
   4 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/exec.s -o %texec.o
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/shared.s -o %tshared.o
   6 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/ledef.s -o %tdef.o
   7 # RUN: ld.lld %texec.o -o %t.exec
   8 # RUN: ld.lld %tshared.o -o %t.shared --shared
   9 # RUN: llvm-objdump --no-print-imm-hex -d %t.exec | FileCheck %s --check-prefix=EXEC
  10 # RUN: llvm-objdump --no-print-imm-hex -d %t.shared | FileCheck %s --check-prefix=SHARED
  11
  12 ## An undefined weak TLS symbol does not fetch a lazy definition.
  13 # RUN: ld.lld %texec.o --start-lib %tdef.o --end-lib -o %tlazy
  14 # RUN: llvm-objdump --no-print-imm-hex -d %tlazy | FileCheck %s --check-prefix=EXEC
  15
  16 ## Undefined TLS symbols arbitrarily resolve to 0.
  17 # EXEC:   leaq 16(%rax), %rdx
  18 ## Initial-exec references to undefined weak symbols can be relaxed to LE
  19 ## references.
  20 # EXEC:   leaq 32(%rax), %rax
  21 # SHARED: leaq 48(%rax), %rcx
  22
  23 # RUN: ld.lld -shared %tdef.o -o %tdef.so
  24 # RUN: not ld.lld %texec.o %tdef.so -o /dev/null 2>&1 | FileCheck --check-prefix=ERROR %s
  25
  26 # ERROR: error: relocation R_X86_64_TPOFF32 cannot be used against symbol 'le'; recompile with -fPIC
  27
  28 #--- ledef.s
  29 .tbss
  30 .globl le
  31 le:
  32
  33 #--- exec.s
  34 .weak le
  35 leaq le@tpoff+16(%rax), %rdx
  36
  37 .weak ie
  38 addq ie@gottpoff+32(%rip), %rax
  39
  40 #--- shared.s
  41 .weak ld
  42 leaq ld@dtpoff+48(%rax), %rcx