src/test/run-make/x86_64-fortanix-unknown-sgx-lvi/enclave/foo_cxx.cpp

   1 extern "C" int cc_plus_one_cxx(int *arg);
   2 extern "C" int cc_plus_one_cxx_asm(int *arg);
   3
   4 int cc_plus_one_cxx(int *arg) {
   5     return *arg + 1;
   6 }
   7
   8 int cc_plus_one_cxx_asm(int *arg) {
   9     int value = 0;
  10
  11     asm volatile ( "    movl (%1), %0\n"
  12                    "    inc %0\n"
  13                    "    jmp 1f\n"
  14                    "    retq\n"  // never executed, but a shortcut to determine how
  15                                  // the assembler deals with `ret` instructions
  16                    "1:\n"
  17                    : "=r"(value)
  18                    : "r"(arg) );
  19
  20     return value;
  21 }