bolt/test/AArch64/build_id.c

   1 // This test checks that referencing build_id through GOT table
   2 // would result in GOT access after disassembly, not directly
   3 // to build_id address.
   4
   5 // RUN: %clang %cflags -fuse-ld=lld -Wl,-T,%S/Inputs/build_id.ldscript -Wl,-q \
   6 // RUN:   -Wl,--no-relax -Wl,--build-id=sha1 %s -o %t.exe
   7 // RUN: llvm-bolt -print-disasm --print-only=get_build_id %t.exe -o %t.bolt | \
   8 // RUN:   FileCheck %s
   9
  10 // CHECK: adrp  [[REG:x[0-28]+]], __BOLT_got_zero
  11 // CHECK: ldr x{{.*}}, [[[REG]], :lo12:__BOLT_got_zero{{.*}}]
  12
  13 struct build_id_note {
  14   char pad[16];
  15   char hash[20];
  16 };
  17
  18 extern const struct build_id_note build_id_note;
  19
  20 __attribute__((noinline)) char get_build_id() { return build_id_note.hash[0]; }
  21
  22 int main() {
  23   get_build_id();
  24   return 0;
  25 }