lld/test/MachO/entry-symbol.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/not-main.s -o %t/not-main.o
   4 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/libfoo.s -o %t/libfoo.o
   5 # RUN: %lld -lSystem -dylib %t/libfoo.o -o %t/libfoo.dylib
   6
   7 # RUN: %lld -lSystem -o %t/not-main %t/not-main.o -e _not_main
   8 # RUN: llvm-objdump --macho --all-headers --syms %t/not-main | FileCheck %s
   9
  10 # CHECK-LABEL: SYMBOL TABLE
  11 # CHECK:       {{0*}}[[#%x, ENTRY_ADDR:]] {{.*}} __TEXT,__text _not_main
  12
  13 # CHECK:      sectname __text
  14 # CHECK-NEXT: segname __TEXT
  15 ## Note: the following checks assume that the entry symbol is right at the
  16 ## beginning of __text.
  17 # CHECK-NEXT: addr 0x{{0*}}[[#ENTRY_ADDR]]
  18 # CHECK-NEXT: size
  19 # CHECK-NEXT: offset [[#ENTRYOFF:]]
  20 # CHECK:      cmd  LC_MAIN
  21 # CHECK-NEXT: cmdsize  24
  22 # CHECK-NEXT: entryoff [[#ENTRYOFF]]
  23
  24 # RUN: %lld -lSystem -o %t/dysym-main %t/not-main.o %t/libfoo.dylib -e _dysym_main
  25 # RUN: llvm-objdump --macho --all-headers --indirect-symbols --lazy-bind %t/dysym-main | FileCheck %s --check-prefix=DYSYM -DDYLIB=libfoo
  26
  27 # RUN: %lld -lSystem -o %t/dyn-lookup %t/not-main.o -e _dysym_main -undefined dynamic_lookup
  28 # RUN: llvm-objdump --macho --all-headers --indirect-symbols --lazy-bind %t/dyn-lookup | FileCheck %s --check-prefix=DYSYM -DDYLIB=flat-namespace
  29
  30 # DYSYM-LABEL: Indirect symbols for (__TEXT,__stubs) 1 entries
  31 # DYSYM-NEXT:  address                      index  name
  32 # DYSYM-NEXT:  0x[[#%x,DYSYM_ENTRY_ADDR:]]  [[#]]  _dysym_main
  33 # DYSYM-LABEL: cmd  LC_MAIN
  34 # DYSYM-NEXT:  cmdsize  24
  35 # DYSYM-NEXT:  entryoff [[#%u, DYSYM_ENTRY_ADDR - 0x100000000]]
  36 # DYSYM-LABEL: Lazy bind table:
  37 # DYSYM-NEXT:  segment  section            address     dylib        symbol
  38 # DYSYM-NEXT:  __DATA   __la_symbol_ptr    {{.*}}      [[DYLIB]]    _dysym_main
  39
  40 # RUN: %lld -lSystem -o %t/weak-dysym-main %t/not-main.o %t/libfoo.dylib -e _weak_dysym_main
  41 # RUN: llvm-objdump --macho --all-headers --indirect-symbols --bind --weak-bind %t/weak-dysym-main | FileCheck %s --check-prefix=WEAK-DYSYM
  42 # WEAK-DYSYM-LABEL: Indirect symbols for (__TEXT,__stubs) 1 entries
  43 # WEAK-DYSYM-NEXT:  address                      index  name
  44 # WEAK-DYSYM-NEXT:  0x[[#%x,DYSYM_ENTRY_ADDR:]]  [[#]]  _weak_dysym_main
  45 # WEAK-DYSYM:       cmd  LC_MAIN
  46 # WEAK-DYSYM-NEXT:  cmdsize  24
  47 # WEAK-DYSYM-NEXT:  entryoff [[#%u, DYSYM_ENTRY_ADDR - 0x100000000]]
  48 # WEAK-DYSYM-LABEL: Bind table:
  49 # WEAK-DYSYM-NEXT:  segment  section          address  type     addend  dylib   symbol
  50 # WEAK-DYSYM:       __DATA   __la_symbol_ptr  {{.*}}   pointer       0  libfoo  _weak_dysym_main
  51 # WEAK-DYSYM-LABEL: Weak bind table:
  52 # WEAK-DYSYM-NEXT:  segment  section          address  type     addend  symbol
  53 # WEAK-DYSYM-NEXT:  __DATA   __la_symbol_ptr  {{.*}}   pointer       0  _weak_dysym_main
  54
  55 # RUN: %lld -dylib -lSystem -o %t/dysym-main.dylib %t/not-main.o %t/libfoo.dylib -e _dysym_main
  56 # RUN: llvm-objdump --macho --indirect-symbols --lazy-bind %t/dysym-main.dylib | FileCheck %s --check-prefix=DYLIB-NO-MAIN
  57 # DYLIB-NO-MAIN-NOT: _dysym_main
  58
  59 # RUN: not %lld -o /dev/null %t/not-main.o -e _missing 2>&1 | FileCheck %s --check-prefix=UNDEFINED
  60 # UNDEFINED: error: undefined symbol: _missing
  61 # RUN: not %lld -o /dev/null %t/not-main.o 2>&1 | FileCheck %s --check-prefix=DEFAULT-ENTRY
  62 # DEFAULT-ENTRY:      error: undefined symbol: _main
  63 # DEFAULT-ENTRY-NEXT: >>> referenced by the entry point
  64
  65 #--- libfoo.s
  66 .text
  67 .global _dysym_main, _weak_dysym_main
  68 .weak_definition _weak_dysym_main
  69 _dysym_main:
  70   ret
  71
  72 _weak_dysym_main:
  73   ret
  74
  75 #--- not-main.s
  76 .text
  77 .global _not_main
  78 _not_main:
  79   ret