sysdeps/powerpc/ifunc-sel.h

   1 /* Used by the elf ifunc tests.  */
   2 #ifndef ELF_IFUNC_SEL_H
   3 #define ELF_IFUNC_SEL_H 1
   4
   5 extern int global;
   6
   7 static inline void *
   8 ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
   9 {
  10   register void *ret __asm__ ("r3");
  11   __asm__ ("mflr 12\n\t"
  12            "bcl 20,31,1f\n"
  13            "1:\tmflr 11\n\t"
  14            "mtlr 12\n\t"
  15            "addis 12,11,global-1b@ha\n\t"
  16            "lwz 12,global-1b@l(12)\n\t"
  17            "addis %0,11,%2-1b@ha\n\t"
  18            "addi %0,%0,%2-1b@l\n\t"
  19            "cmpwi 12,1\n\t"
  20            "beqlr\n\t"
  21            "addis %0,11,%3-1b@ha\n\t"
  22            "addi %0,%0,%3-1b@l\n\t"
  23            "cmpwi 12,-1\n\t"
  24            "beqlr\n\t"
  25            "addis %0,11,%4-1b@ha\n\t"
  26            "addi %0,%0,%4-1b@l"
  27            : "=r" (ret)
  28            : "X" (&global), "X" (f1), "X" (f2), "X" (f3));
  29   return ret;
  30 }
  31
  32 static inline void *
  33 ifunc_one (int (*f1) (void))
  34 {
  35   register void *ret __asm__ ("r3");
  36   __asm__ ("mflr 12\n\t"
  37            "bcl 20,31,1f\n"
  38            "1:\tmflr %0\n\t"
  39            "mtlr 12\n\t"
  40            "addis %0,%0,%1-1b@ha\n\t"
  41            "addi %0,%0,%1-1b@l"
  42            : "=r" (ret)
  43            : "X" (f1));
  44   return ret;
  45 }
  46 #endif