lld/test/COFF/gfids-relocations64.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -triple x86_64-pc-win32 %s -filetype=obj -o %t.obj
   3 # RUN: lld-link %t.obj -guard:cf -out:%t.exe -entry:main
   4 # RUN: llvm-readobj --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK
   5
   6 # f, g, and main go in the table.
   7 # Including g isn't strictly necessary since it's not an indirect call target,
   8 # however the linker can't know that because relative relocations are used both
   9 # for direct calls and for getting the absolute address of a function.
  10 # (use /lldmap:map.txt to check their addresses).
  11 #
  12 # CHECK: GuardFidTable [
  13 # CHECK-NEXT: 0x140001000
  14 # CHECK-NEXT: 0x140001010
  15 # CHECK-NEXT: 0x140001030
  16 # CHECK-NEXT: ]
  17
  18         .def    f;
  19         .scl    3;
  20         .type   32;
  21         .endef
  22         .section       .text,"xr",one_only,f
  23         .p2align 4
  24 f:      movl $1, %eax
  25         ret
  26
  27
  28         .def    g;
  29         .scl    3;
  30         .type   32;
  31         .endef
  32         .section       .text,"xr",one_only,g
  33         .p2align 4
  34 g:      movl $2, %eax
  35         ret
  36
  37
  38         .def    label;
  39         .scl    6;     # StorageClass: Label
  40         .type   0;     # Type: Not a function.
  41         .endef
  42         .section       .text,"xr",one_only,label
  43         .p2align 4
  44 label:  ret
  45
  46
  47         .data
  48         .globl fp
  49         .p2align 4
  50 fp:     .quad f        # DIR32 relocation to function
  51         .quad label    # DIR32 relocation to label
  52
  53
  54         .def    main;
  55         .scl    2;
  56         .type   32;
  57         .endef
  58         .section       .text,"xr",one_only,main
  59         .globl  main
  60         .p2align 4
  61 main:   call *fp       # DIR32 relocation to data
  62         call g         # REL32 relocation to function
  63         ret
  64
  65
  66 # Load configuration directory entry (winnt.h _IMAGE_LOAD_CONFIG_DIRECTORY64).
  67 # The linker will define the __guard_* symbols.
  68         .section .rdata,"dr"
  69 .globl _load_config_used
  70 _load_config_used:
  71         .long 256
  72         .fill 124, 1, 0
  73         .quad __guard_fids_table
  74         .quad __guard_fids_count
  75         .long __guard_flags
  76         .fill 128, 1, 0