lld/test/MachO/flat-namespace-dysyms.s

   1 # REQUIRES: x86
   2 # RUN: rm -rf %t; split-file %s %t
   3
   4 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/foo.o %t/foo.s
   5 # RUN: %lld -dylib -o %t/foo.dylib %t/foo.o
   6
   7 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/bar.o %t/bar.s
   8 # RUN: %lld -lSystem -dylib -o %t/bar.dylib %t/bar.o %t/foo.dylib
   9
  10 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/baz.o %t/baz.s
  11 # RUN: %lld -lSystem -dylib -o %t/baz.dylib %t/baz.o %t/bar.dylib
  12
  13 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos -o %t/main.o %t/main.s
  14
  15 ## With flat_namespace, the linker automatically looks in foo.dylib and
  16 ## bar.dylib too, but it doesn't add a LC_LOAD_DYLIB for it.
  17 # RUN: %lld -flat_namespace -lSystem %t/main.o %t/baz.dylib -o %t/out -t \
  18 # RUN:  --reproduce %t/repro.tar | FileCheck --check-prefix=T %s
  19 ## FIXME: The `bar.dylib` line should use `T-NEXT`, but on Windows we load
  20 ## libSystem.tbd with different slash styles and end up loading it twice
  21 ## for that reason.
  22 # T:      main.o
  23 # T-NEXT: baz.dylib
  24 # T:      bar.dylib
  25 # T-NEXT: foo.dylib
  26 # RUN: llvm-objdump --macho --all-headers %t/out \
  27 # RUN:     | FileCheck --check-prefix=HEADERBITS %s
  28 # RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/out \
  29 # RUN:     | FileCheck --check-prefix=FLAT %s
  30 # RUN: llvm-nm -m %t/out | FileCheck --check-prefix=FLATSYM %s
  31 # RUN: llvm-readobj --syms %t/out | FileCheck --check-prefix=FLATSYM-READOBJ %s
  32 # RUN: cd %t
  33 # RUN: tar -tf repro.tar | FileCheck -DPATH='%:t.dir' --check-prefix=REPRO %s
  34 # RUN: tar -xf repro.tar repro/response.txt
  35 # RUN: FileCheck --implicit-check-not=dylib --check-prefix=RESPONSE %s \
  36 # RUN:     < %t/repro/response.txt
  37
  38 # HEADERBITS-NOT: NOUNDEFS
  39 # HEADERBITS-NOT: TWOLEVEL
  40 # HEADERBITS: DYLDLINK
  41 # HEADERBITS-NOT: foo.dylib
  42 # HEADERBITS-NOT: bar.dylib
  43
  44 # FLAT: Bind table:
  45 # FLAT: __DATA_CONST __got          0x{{[0-9a-f]*}} pointer         0 flat-namespace   dyld_stub_binder
  46 # FLAT: Lazy bind table:
  47 # FLAT-DAG: __DATA   __la_symbol_ptr    0x{{[0-9a-f]*}} flat-namespace   _bar
  48 # FLAT-DAG: __DATA   __la_symbol_ptr    0x{{[0-9a-f]*}} flat-namespace   _baz
  49 # FLAT-DAG: __DATA   __la_symbol_ptr    0x{{[0-9a-f]*}} flat-namespace   _foo
  50
  51 ## No "(dynamically looked up)" because llvm-nm -m doesn't print that
  52 ## for files without MH_TWOLEVEL for some reason.
  53 # FLATSYM: (undefined) external _bar
  54 # FLATSYM: (undefined) external _baz
  55 # FLATSYM: (undefined) external _foo
  56
  57 ## ...but `llvm-readobj --syms` does, so verify we put the right thing there.
  58 # FLATSYM-READOBJ: Flags [ (0xFE00)
  59
  60 ## All 3 .dylibs should be in a --reproduce archive.
  61 # REPRO: baz.dylib
  62 # REPRO: bar.dylib
  63 # REPRO: foo.dylib
  64
  65 ## ...but only baz.dylib should be in the response file:
  66 # RESPONSE: baz.dylib
  67
  68 # Undefined symbols should still cause errors by default.
  69 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos \
  70 # RUN:     -o %t/main-with-undef.o %t/main-with-undef.s
  71 # RUN: not %lld -flat_namespace -lSystem %t/main-with-undef.o %t/bar.dylib \
  72 # RUN:     -o %t/out 2>&1 | FileCheck --check-prefix=UNDEF %s
  73 # UNDEF: error: undefined symbol: _quux
  74
  75 #--- foo.s
  76 .globl _foo
  77 _foo:
  78   ret
  79
  80 #--- bar.s
  81 .globl _bar
  82 _bar:
  83   callq _foo
  84   ret
  85
  86 #--- baz.s
  87 .globl _baz
  88 _baz:
  89   callq _bar
  90   ret
  91
  92 #--- main.s
  93 .globl _main
  94 _main:
  95   callq _foo
  96   callq _bar
  97   callq _baz
  98   ret
  99
 100 #--- main-with-undef.s
 101 .globl _main
 102 _main:
 103   callq _foo
 104   callq _bar
 105   callq _baz
 106   callq _quux
 107   ret