lld/test/COFF/autoimport-refptr.s

   1 # REQUIRES: x86
   2
   3 # RUN: echo -e ".global variable\n.global DllMainCRTStartup\n.text\nDllMainCRTStartup:\nret\n.data\nvariable:\n.long 42" > %t-lib.s
   4 # RUN: llvm-mc -triple=x86_64-windows-gnu %t-lib.s -filetype=obj -o %t-lib.obj
   5 # RUN: lld-link -out:%t-lib.dll -dll -entry:DllMainCRTStartup %t-lib.obj -lldmingw -implib:%t-lib.lib
   6
   7 # RUN: llvm-mc -triple=x86_64-windows-gnu %s -defsym listptrs=1 -filetype=obj -o %t.obj
   8 # RUN: lld-link -lldmingw -out:%t.exe -entry:main %t.obj %t-lib.lib -verbose
   9
  10 # RUN: llvm-readobj --coff-imports %t.exe | FileCheck -check-prefix=IMPORTS %s
  11 # RUN: llvm-objdump --no-print-imm-hex -d %t.exe | FileCheck --check-prefix=DISASM %s
  12 # RUN: llvm-objdump -s %t.exe | FileCheck --check-prefix=CONTENTS %s
  13
  14 ## Check that we can autoimport these variables with pseudo relocs disabled.
  15 # RUN: llvm-mc -triple=x86_64-windows-gnu %s -defsym listptrs=0 -filetype=obj -o %t.noptrs.obj
  16 # RUN: lld-link -lldmingw -runtime-pseudo-reloc:no -out:%t.exe -entry:main %t.noptrs.obj %t-lib.lib
  17
  18 ## Check that we can't autoimport them with autoimport disabled.
  19 # RUN: not lld-link -lldmingw -auto-import:no -out:%t.exe -entry:main %t.noptrs.obj %t-lib.lib 2>&1 | FileCheck --check-prefix=NO-AUTOIMPORT %s
  20
  21 # IMPORTS: Import {
  22 # IMPORTS-NEXT: Name: autoimport-refptr.s.tmp-lib.dll
  23 # IMPORTS-NEXT: ImportLookupTableRVA: 0x2050
  24 # IMPORTS-NEXT: ImportAddressTableRVA: 0x2060
  25 # IMPORTS-NEXT: Symbol: variable (0)
  26 # IMPORTS-NEXT: }
  27
  28 # DISASM: Disassembly of section .text:
  29 # DISASM-EMPTY:
  30 # DISASM: <.text>:
  31 # Relative offset at 0x1002 pointing at the IAT at 0x2060
  32 # DISASM: 140001000:      48 8b 05 59 10 00 00    movq    4185(%rip), %rax
  33 # DISASM: 140001007:      8b 00   movl    (%rax), %eax
  34 # Relative offset at 0x100b pointing at the .refptr.localvar stub at
  35 # 0x2000
  36 # DISASM: 140001009:      48 8b 0d f0 0f 00 00    movq    4080(%rip), %rcx
  37 # DISASM: 140001010:      03 01   addl    (%rcx), %eax
  38 # DISASM: 140001012:      c3      retq
  39
  40 # relocs: pointing at an empty list of runtime pseudo relocs.
  41 # localvar: 42
  42 # CONTENTS: Contents of section .data:
  43 # CONTENTS:  140003000 08200040 01000000 08200040 01000000
  44 # CONTENTS:  140003010 2a000000
  45
  46 # NO-AUTOIMPORT: error: undefined symbol: variable
  47
  48     .global main
  49     .global localvar
  50     .text
  51 main:
  52     movq .refptr.variable(%rip), %rax
  53     movl (%rax), %eax
  54     movq .refptr.localvar(%rip), %rcx
  55     addl (%rcx), %eax
  56     ret
  57
  58     .data
  59 .if listptrs==1
  60 relocs:
  61     .quad __RUNTIME_PSEUDO_RELOC_LIST__
  62     .quad __RUNTIME_PSEUDO_RELOC_LIST_END__
  63 .endif
  64 localvar:
  65     .int 42
  66
  67 # Normally the compiler wouldn't emit a stub for a variable that is
  68 # emitted in the same translation unit.
  69     .section .rdata$.refptr.localvar,"dr",discard,.refptr.localvar
  70     .global .refptr.localvar
  71 .refptr.localvar:
  72     .quad localvar
  73
  74     .section .rdata$.refptr.variable,"dr",discard,.refptr.variable
  75     .global .refptr.variable
  76 .refptr.variable:
  77     .quad variable