lld/test/ELF/symver-non-default.s

   1 # REQUIRES: x86
   2 ## Test symbol resolution related to .symver produced non-default version symbols.
   3
   4 # RUN: split-file %s %t
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/ref.s -o %t/ref.o
   6 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/def1.s -o %t/def1.o
   7 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/def2.s -o %t/def2.o
   8 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/def3.s -o %t/def3.o
   9
  10 ## foo@v1 & foo defined at the same location are combined.
  11 # RUN: ld.lld -shared --version-script=%t/ver1 %t/def1.o %t/ref.o -o %t1
  12 # RUN: llvm-readelf --dyn-syms %t1 | FileCheck %s --check-prefix=CHECK1
  13 # RUN: ld.lld -shared --version-script=%t/ver2 %t/def1.o %t/ref.o -o %t1
  14 # RUN: llvm-readelf --dyn-syms %t1 | FileCheck %s --check-prefix=CHECK1
  15
  16 # CHECK1:       1: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@v1
  17 # CHECK1-EMPTY:
  18
  19 ## def2.o doesn't define foo. foo@v1 & undefined foo are unrelated.
  20 # RUN: ld.lld -shared --version-script=%t/ver1 %t/def2.o %t/ref.o -o %t2
  21 # RUN: llvm-readelf -r --dyn-syms %t2 | FileCheck %s --check-prefix=CHECK2
  22
  23 # CHECK2:       R_X86_64_JUMP_SLOT {{.*}} foo + 0
  24 # CHECK2:       1: {{.*}} NOTYPE GLOBAL DEFAULT UND   foo{{$}}
  25 # CHECK2-NEXT:  2: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@v1
  26 # CHECK2-EMPTY:
  27
  28 ## def2.o doesn't define foo. foo@v1 & defined foo are unrelated.
  29 # RUN: ld.lld -shared --version-script=%t/ver1 %t/def2.o %t/def3.o %t/ref.o -o %t3
  30 # RUN: llvm-readelf -r --dyn-syms %t3 | FileCheck %s --check-prefix=CHECK3
  31
  32 # CHECK3:       R_X86_64_JUMP_SLOT {{.*}} foo + 0
  33 # CHECK3:       1: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@v1
  34 # CHECK3-NEXT:  2: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo{{$}}
  35 # CHECK3-EMPTY:
  36
  37 ## foo@v1 overrides the defined foo which is affected by a version script.
  38 # RUN: ld.lld -shared --version-script=%t/ver2 %t/def2.o %t/def3.o %t/ref.o -o %t4
  39 # RUN: llvm-readelf -r --dyn-syms %t4 | FileCheck %s --check-prefix=CHECK4
  40
  41 # CHECK4:       R_X86_64_JUMP_SLOT {{.*}} foo@v1 + 0
  42 # CHECK4:       1: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@v1
  43 # CHECK4-EMPTY:
  44
  45 #--- ver1
  46 v1 {};
  47
  48 #--- ver2
  49 v1 { foo; };
  50
  51 #--- ref.s
  52 call foo
  53
  54 #--- def1.s
  55 .globl foo
  56 .symver foo, foo@v1
  57 foo:
  58   ret
  59
  60 #--- def2.s
  61 .globl foo_v1
  62 .symver foo_v1, foo@v1, remove
  63 foo_v1:
  64   ret
  65
  66 #--- def3.s
  67 .globl foo
  68 foo:
  69   ret