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

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
   3 # RUN: ld.lld %t.o -o %t --export-dynamic
   4 # RUN: llvm-readelf -r --hex-dump=.data %t | FileCheck %s --check-prefix=NOPIC
   5 # RUN: ld.lld %t.o -o %t.pie -pie
   6 # RUN: llvm-readobj -r %t.pie | FileCheck %s --check-prefix=PIC
   7 # RUN: ld.lld %t.o -o %t.so -shared
   8 # RUN: llvm-readobj -r %t.so | FileCheck %s --check-prefix=PIC
   9
  10 ## gABI leaves the behavior of weak undefined references implementation defined.
  11 ## We choose to resolve them statically for -no-pie and produce dynamic relocations
  12 ## for -pie and -shared.
  13 ##
  14 ## Note: Some ports of GNU ld support -z nodynamic-undefined-weak that we don't
  15 ## implement.
  16
  17 # NOPIC: no relocations
  18 # NOPIC: Hex dump of section '.data':
  19 # NOPIC-NEXT: {{.*}} 00000000 00000000
  20 # NOPIC-EMPTY:
  21
  22 # PIC:      .rela.dyn {
  23 # PIC-NEXT:   R_X86_64_64 foobar 0x0
  24 # PIC-NEXT: }
  25
  26         .global _start
  27 _start:
  28         .data
  29         .weak foobar
  30         .quad foobar