lld/test/ELF/export-symbols.s

   1 # REQUIRES: x86
   2 ## Verify that the arguments --export-dynamic and --dynamic-list
   3 ## put the correct symbols in the dynamic symbol table.
   4
   5 # RUN: echo "{ *; };" > %t.list
   6
   7 # RUN: echo ".globl shared" > %t.s ; echo "shared = 0xDEADBEEF" >> %t.s
   8
   9 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t.s -o %t-shared.o
  10 # RUN: ld.lld --shared %t-shared.o -o %t.so
  11
  12 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
  13 ## Use --fatal-warnings to confirm no diagnostics are emitted.
  14 # RUN: ld.lld --fatal-warnings --defsym=defsym=_start %t.so %t.o -o %t.out
  15 # RUN: ld.lld --fatal-warnings --defsym=defsym=_start %t.so %t.o -o %texport.out --export-dynamic
  16 # RUN: ld.lld --fatal-warnings --defsym=defsym=_start %t.so %t.o -o %tlist.out --dynamic-list %t.list
  17
  18 # RUN: llvm-readelf --dyn-syms %t.out | FileCheck %s --check-prefix=NO-EXPORT
  19 # RUN: llvm-readelf --dyn-syms %texport.out | FileCheck %s --check-prefix=EXPORT
  20 # RUN: llvm-readelf --dyn-syms %tlist.out | FileCheck %s --check-prefix=EXPORT
  21
  22 # NO-EXPORT:      Symbol table '.dynsym' contains 3 entries:
  23 # NO-EXPORT:      GLOBAL DEFAULT {{.*}} shared
  24 # NO-EXPORT-NEXT: WEAK   DEFAULT {{.*}} undef_weak
  25
  26 # EXPORT:      Symbol table '.dynsym' contains 8 entries:
  27 # EXPORT:      GLOBAL DEFAULT   {{.*}} shared
  28 # EXPORT-NEXT: WEAK   DEFAULT   {{.*}} undef_weak
  29 # EXPORT-NEXT: WEAK   DEFAULT   {{.*}} weak_default
  30 # EXPORT-NEXT: GLOBAL DEFAULT   {{.*}} common
  31 # EXPORT-NEXT: GLOBAL DEFAULT   ABS    abs
  32 # EXPORT-NEXT: GLOBAL PROTECTED {{.*}} _start
  33 # EXPORT-NEXT: GLOBAL DEFAULT   {{.*}} defsym
  34
  35 ## --no-export-dynamic can cancel previous --export-dynamic.
  36 # RUN: ld.lld --fatal-warnings --defsym=defsym=_start %t.so %t.o -o - --export-dynamic --no-export-dynamic | cmp %t.out -
  37
  38 .weak undef_weak
  39
  40 .weak weak_default
  41 weak_default:
  42
  43 .weak weak_internal
  44 .internal weak_internal
  45 weak_internal:
  46
  47 .weak weak_hidden
  48 .internal weak_hidden
  49 weak_hidden:
  50
  51 .weak weak_protected
  52 .internal weak_protected
  53 weak_protected:
  54
  55 .globl shared
  56
  57 .local local
  58 local:
  59
  60 .comm common, 10
  61
  62 .globl abs
  63 abs = 0xDEADBEEF
  64
  65 .globl hidden
  66 .hidden hidden
  67 hidden:
  68
  69 .globl _start
  70 .protected _start
  71 _start: