# REQUIRES: x86 # RUN: llvm-mc -triple i686-pc-win32 %s -filetype=obj -o %t.obj # RUN: lld-link %t.obj -guard:cf -out:%t.exe -entry:main # RUN: llvm-readobj -coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK # Only f and _main should go in the table. # (use /lldmap:map.txt to check their addresses). # # CHECK: GuardFidTable [ # CHECK-NEXT: 0x401000 # CHECK-NEXT: 0x401030 # CHECK-NEXT: ] # The input was loosly based on studying this program: # # void foo() { return; } # void bar() { return; } # int main() { # foo(); # void (*arr[])() = { &bar }; # (*arr[0])(); # return 0; # } # cl /c a.cc && dumpbin /disasm a.obj > a.txt && # link a.obj /guard:cf /map:map.txt && dumpbin /loadconfig a.exe .def f; .scl 3; .type 32; .endef .section .text,"xr",one_only,f .p2align 4 f: movl $1, %eax ret .def g; .scl 3; .type 32; .endef .section .text,"xr",one_only,g .p2align 4 g: movl $2, %eax ret .def label; .scl 6; # StorageClass: Label .type 0; # Type: Not a function. .endef .section .text,"xr",one_only,label .p2align 4 label: ret .data .globl fp .p2align 4 fp: .long f # DIR32 relocation to function .long label # DIR32 relocation to label .def _main; .scl 2; .type 32; .endef .section .text,"xr",one_only,_main .globl _main .p2align 4 _main: call *fp # DIR32 relocation to data call g # REL32 relocation to function ret # Load configuration directory entry (winnt.h _IMAGE_LOAD_CONFIG_DIRECTORY32). # The linker will define the ___guard_* symbols. .section .rdata,"dr" .globl __load_config_used __load_config_used: .long 104 # Size. .fill 76, 1, 0 .long ___guard_fids_table .long ___guard_fids_count .long ___guard_flags .fill 12, 1, 0