ldso/ldso/arm/dl-syscalls.h

   1 /* We can't use the real errno in ldso, since it has not yet
   2  * been dynamicly linked in yet. */
   3 #include "sys/syscall.h"
   4 extern int _dl_errno;
   5 #undef __set_errno
   6 #define __set_errno(X) {(_dl_errno) = (X);}
   7 /* _call_via_rX calls are used in thumb ldso because of calls via
   8  * function pointers, but ldso is not linked with anything which
   9  * provides them, so define them here (only required for thumb).
  10  */
  11 #if defined(__thumb__)
  12 __asm__(
  13         ".macro call_via register\n"
  14         "       .global _call_via_\\register\n"
  15         "       .hidden _call_via_\\register\n"
  16         "       .type   _call_via_\\register, %function\n"
  17         "       .thumb_func\n"
  18         "_call_via_\\register:\n"
  19         "       bx      \\register\n"
  20         "       .size   _call_via_\\register, . - _call_via_\\register\n"
  21         ".endm\n"
  22
  23         ".text\n"
  24         ".thumb\n"
  25         ".align 1\n"
  26         "       call_via r0\n"
  27         "       call_via r1\n"
  28         "       call_via r2\n"
  29         "       call_via r3\n"
  30         "       call_via r4\n"
  31         "       call_via r5\n"
  32         "       call_via r6\n"
  33         "       call_via r7\n"
  34         "       call_via r8\n"
  35         "       call_via r9\n"
  36         "       call_via r10\n"
  37         "       call_via r11\n"
  38         "       call_via r12\n"
  39         "       call_via r13\n"
  40         "       call_via r14\n"
  41 );
  42 #endif