lld/test/MachO/symbol-resolution.s

   1 # REQUIRES: x86
   2 # RUN: rm -rf %t; split-file %s %t
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/libresolution.s -o %t/libresolution.o
   4 # RUN: %lld -dylib -install_name \
   5 # RUN:   @executable_path/libresolution.dylib %t/libresolution.o -o %t/libresolution.dylib
   6 # RUN: %lld -dylib -install_name \
   7 # RUN:   @executable_path/libresolution2.dylib %t/libresolution.o -o %t/libresolution2.dylib
   8 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/resolution.s -o %t/resolution.o
   9
  10 ## Check that we select the symbol defined in the first dylib passed on the
  11 ## command line.
  12 # RUN: %lld -o %t/dylib-first -L%t -lresolution -lresolution2 %t/resolution.o
  13 # RUN: llvm-objdump --macho --bind %t/dylib-first | FileCheck %s --check-prefix=DYLIB-FIRST
  14 # DYLIB-FIRST: libresolution _foo
  15
  16 # RUN: %lld -o %t/dylib2-first -L%t -lresolution2 -lresolution %t/resolution.o
  17 # RUN: llvm-objdump --macho --bind %t/dylib2-first | FileCheck %s --check-prefix=DYLIB2-FIRST
  18 # DYLIB2-FIRST: libresolution2 _foo
  19
  20 ## Also check that defined symbols take precedence over dylib symbols.
  21 # DYLIB-FIRST-NOT: libresolution _bar
  22 # DYLIB-FIRST-NOT: libresolution _baz
  23
  24 ## Check that we pick the dylib symbol over the undefined symbol in the object
  25 ## file, even if the object file appears first on the command line.
  26 # RUN: %lld -o %t/obj-first -L%t %t/resolution.o -lresolution
  27 # RUN: llvm-objdump --macho --bind %t/obj-first | FileCheck %s --check-prefix=OBJ-FIRST
  28 # OBJ-FIRST: libresolution _foo
  29 ## But defined symbols should still take precedence.
  30 # OBJ-FIRST-NOT: libresolution _bar
  31 # OBJ-FIRST-NOT: libresolution _baz
  32
  33 #--- libresolution.s
  34 .globl _foo, _bar, _baz
  35 _foo:
  36 _bar:
  37 _baz:
  38
  39 #--- resolution.s
  40 .globl _main, _bar
  41 # Global defined symbol
  42 _bar:
  43 # Local defined symbol
  44 _baz:
  45
  46 _main:
  47   movq _foo@GOTPCREL(%rip), %rsi
  48   movq _bar@GOTPCREL(%rip), %rsi
  49   movq _baz@GOTPCREL(%rip), %rsi
  50   ret