ports/sysdeps/aarch64/bits/link.h

   1 /* Copyright (C) 2005-2014 Free Software Foundation, Inc.
   2
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _LINK_H
  20 # error "Never include <bits/link.h> directly; use <link.h> instead."
  21 #endif
  22
  23 /* Registers for entry into PLT on AArch64.  */
  24 typedef struct La_aarch64_regs
  25 {
  26   uint64_t lr_xreg[8];
  27   uint64_t lr_dreg[8];
  28   uint64_t lr_sp;
  29   uint64_t lr_lr;
  30 } La_aarch64_regs;
  31
  32 /* Return values for calls from PLT on AArch64.  */
  33 typedef struct La_aarch64_retval
  34 {
  35   /* Up to two integer registers can be used for a return value.  */
  36   uint64_t lrv_xreg[2];
  37   /* Up to four D registers can be used for a return value.  */
  38   uint64_t lrv_dreg[4];
  39
  40 } La_aarch64_retval;
  41 __BEGIN_DECLS
  42
  43 extern Elf64_Addr
  44 la_aarch64_gnu_pltenter (Elf64_Sym *__sym, unsigned int __ndx,
  45                          uintptr_t *__refcook,
  46                          uintptr_t *__defcook,
  47                          La_aarch64_regs *__regs,
  48                          unsigned int *__flags,
  49                          const char *__symname,
  50                          long int *__framesizep);
  51
  52 extern unsigned int
  53 la_aarch64_gnu_pltexit (Elf64_Sym *__sym, unsigned int __ndx,
  54                         uintptr_t *__refcook,
  55                         uintptr_t *__defcook,
  56                         const La_aarch64_regs *__inregs,
  57                         La_aarch64_retval *__outregs,
  58                         const char *__symname);
  59
  60 __END_DECLS