tests/asm-c-connect-1.c

   1 #include <stdio.h>
   2
   3 #if (defined _WIN32 || defined __APPLE__) && (!defined __TINYC__ || defined __leading_underscore)
   4 # define _ "_"
   5 #else
   6 # define _
   7 #endif
   8
   9 #ifdef __clang__
  10 /* clang needs some help tp not throw functions away even at -O0 */
  11 #define __USED __attribute__((__used__))
  12 #else
  13 #define __USED
  14 #endif
  15
  16 static int __USED x1_c (void)
  17 {
  18     printf(" x1");
  19     return 1;
  20 }
  21
  22 #if __i386__
  23 asm(".text;"_"x1: call "_"x1_c; ret");
  24 #else
  25 /* Keep stack aligned */
  26 asm(".text;"_"x1: sub $8,%rsp; call "_"x1_c; add $8,%rsp; ret");
  27 #endif
  28
  29 void callx4(void);
  30 void callx5_again(void);
  31
  32 void x6()
  33 {
  34     printf(" x6-1");
  35 }
  36
  37 int main(int argc, char *argv[])
  38 {
  39     printf("*");
  40     asm("call "_"x1");
  41     asm("call "_"x2");
  42     asm("call "_"x3");
  43     callx4();
  44     asm("call "_"x5");
  45     callx5_again();
  46     x6();
  47     printf(" *\n");
  48     return 0;
  49 }
  50
  51 static
  52 int __USED x2(void)
  53 {
  54     printf(" x2");
  55     return 2;
  56 }
  57
  58 extern int x3(void);
  59
  60 void x4(void)
  61 {
  62     printf(" x4");
  63 }
  64
  65 void x5(void);
  66 void x5(void)
  67 {
  68     printf(" x5");
  69 }