lld/test/MachO/init-offsets.s

   1 # REQUIRES: x86
   2 # RUN: rm -rf %t; split-file %s %t
   3
   4 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/first.s -o %t/first.o
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/second.s -o %t/second.o
   6
   7 # RUN: %lld -lSystem -init_offsets -undefined dynamic_lookup  %t/first.o %t/second.o -o %t/out
   8 # RUN: llvm-otool -lv %t/out | FileCheck --check-prefix=FLAGS --implicit-check-not=__mod_init_func %s
   9 # RUN: llvm-otool -l %t/out > %t/dump.txt
  10 # RUN: llvm-objdump --macho --print-imm-hex --section=__TEXT,__stubs %t/out >> %t/dump.txt
  11 # RUN: llvm-objdump --macho --syms %t/out >> %t/dump.txt
  12 # RUN: llvm-objcopy --dump-section=__TEXT,__init_offsets=%t/section.bin %t/out
  13 # RUN: echo "__TEXT,__init_offsets contents:" >> %t/dump.txt
  14 # RUN: od -An -txI %t/section.bin >> %t/dump.txt
  15 # RUN: FileCheck --check-prefix=CONTENT --implicit-check-not=_init_ptr %s < %t/dump.txt
  16
  17 ## This test checks that:
  18 ## - __mod_init_func is replaced by __init_offsets.
  19 ## - __mod_init_func has type S_INIT_FUNC_OFFSETS.
  20 ## - initializers show up in the order their parent objects are specified on the
  21 ##   command line, and in the order they show up within __mod_init_func.
  22 ## - for undefined and dylib symbols, stubs are created, and the offsets point to those.
  23 ## - offsets are relative to __TEXT's address, they aren't an absolute virtual address.
  24 ## - symbols defined within __mod_init_func are ignored.
  25
  26 # FLAGS:      sectname __init_offsets
  27 # FLAGS-NEXT:  segname __TEXT
  28 # FLAGS-NEXT:     addr
  29 # FLAGS-NEXT:     size 0x0000000000000010
  30 # FLAGS-NEXT:   offset
  31 # FLAGS-NEXT:    align 2^2 (4)
  32 # FLAGS-NEXT:   reloff 0
  33 # FLAGS-NEXT:   nreloc 0
  34 # FLAGS-NEXT:     type S_INIT_FUNC_OFFSETS
  35
  36 # CONTENT:      segname __TEXT
  37 # CONTENT-NEXT: 0x[[#%x, TEXT:]]
  38
  39 # CONTENT:      Contents of (__TEXT,__stubs) section
  40 # CONTENT-NEXT: [[#%x, ISNAN:]]: {{.*}} ## literal pool symbol address: ___isnan
  41 # CONTENT-NEXT: [[#%x, UNDEF:]]: {{.*}} ## literal pool symbol address: _undefined
  42
  43 # CONTENT: SYMBOL TABLE:
  44 # CONTENT: [[#%x, FIRST:]]  g F __TEXT,__text _first_init
  45 # CONTENT: [[#%x, SECOND:]] g F __TEXT,__text _second_init
  46
  47 # CONTENT: __TEXT,__init_offsets contents:
  48 # CONTENT: [[#%.8x, FIRST - TEXT]] [[#%.8x, ISNAN - TEXT]] [[#%.8x, UNDEF - TEXT]] [[#%.8x, SECOND - TEXT]]
  49
  50 #--- first.s
  51 .globl _first_init, ___isnan, _main
  52 .globl _init_ptr_1
  53 .text
  54 _first_init:
  55   ret
  56 _main:
  57   ret
  58
  59 .section __DATA,__mod_init_func,mod_init_funcs
  60 _init_ptr_1:
  61 .quad _first_init
  62 .quad ___isnan
  63
  64 .subsections_via_symbols
  65
  66 #--- second.s
  67 .globl _second_init, _undefined
  68 .text
  69 _second_init:
  70   ret
  71
  72 .section __DATA,__mod_init_func,mod_init_funcs
  73 .quad _undefined
  74 _init_ptr_2:
  75 .quad _second_init
  76
  77 .subsections_via_symbols