gdb/testsuite/gdb.arch/altivec-regs.c

   1 #include <altivec.h>
   2 #include <stdio.h>
   3
   4 vector unsigned int
   5 vector_fun (volatile vector unsigned int a, volatile vector unsigned int b)
   6 {
   7   vector unsigned int c;
   8   a = ((vector unsigned int) vec_splat_u8(2));
   9   b = ((vector unsigned int) vec_splat_u8(3));
  10
  11   c = vec_add (a, b);
  12   return c;
  13 }
  14
  15 int
  16 main ()
  17 {
  18   vector unsigned int y;
  19   vector unsigned int x;
  20   vector unsigned int z;
  21   int a = 0;
  22
  23   #ifdef _AIX
  24   /* On AIX, the debugger cannot access vector registers before they
  25      are first used by the inferior.  Perform such an access here.  */
  26   x = ((vector unsigned int) vec_splat_u8 (0));
  27   #endif
  28
  29   /* This line may look unnecessary but we do need it, because we want to
  30      have a line to do a next over (so that gdb refetches the registers)
  31      and we don't want the code to change any vector registers.
  32      The splat operations below modify the VRs,i
  33      so we don't want to execute them yet.  */
  34   a = 9; /* start here */
  35   x = ((vector unsigned int) vec_splat_u8 (-2));
  36   y = ((vector unsigned int) vec_splat_u8 (1));
  37
  38   z = vector_fun (x, y);
  39   x = vec_sld (x,y,2);
  40
  41   x = vec_add (x, ((vector unsigned int){5,6,7,8}));
  42   z = (vector unsigned int) vec_splat_u8 ( -2);
  43   y = vec_add (x, z);
  44   z = (vector unsigned int) vec_cmpeq (x,y);
  45
  46   return 0;
  47 }