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            "beq 2f\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            "beq 2f\n\t"
  25            "addis %0,11,%4-1b@ha\n\t"
  26            "addi %0,%0,%4-1b@l\n\t"
  27            "2:"
  28            : "=r" (ret)
  29            : "i" (&global), "i" (f1), "i" (f2), "i" (f3)
  30            : "11", "12", "cr0");
  31   return ret;
  32 }
  33
  34 static inline void *
  35 ifunc_one (int (*f1) (void))
  36 {
  37   register void *ret __asm__ ("r3");
  38   __asm__ ("mflr 12\n\t"
  39            "bcl 20,31,1f\n"
  40            "1:\tmflr %0\n\t"
  41            "mtlr 12\n\t"
  42            "addis %0,%0,%1-1b@ha\n\t"
  43            "addi %0,%0,%1-1b@l"
  44            : "=r" (ret)
  45            : "i" (f1)
  46            : "12");
  47   return ret;
  48 }
  49 #endif