sysdeps/x86_64/bits/link.h

   1 /* Copyright (C) 2004, 2005, 2009 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _LINK_H
  20 # error "Never include <bits/link.h> directly; use <link.h> instead."
  21 #endif
  22
  23
  24 #if __ELF_NATIVE_CLASS == 32
  25 /* Registers for entry into PLT on IA-32.  */
  26 typedef struct La_i86_regs
  27 {
  28   uint32_t lr_edx;
  29   uint32_t lr_ecx;
  30   uint32_t lr_eax;
  31   uint32_t lr_ebp;
  32   uint32_t lr_esp;
  33 } La_i86_regs;
  34
  35 /* Return values for calls from PLT on IA-32.  */
  36 typedef struct La_i86_retval
  37 {
  38   uint32_t lrv_eax;
  39   uint32_t lrv_edx;
  40   long double lrv_st0;
  41   long double lrv_st1;
  42 } La_i86_retval;
  43
  44
  45 __BEGIN_DECLS
  46
  47 extern Elf32_Addr la_i86_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx,
  48                                        uintptr_t *__refcook,
  49                                        uintptr_t *__defcook,
  50                                        La_i86_regs *__regs,
  51                                        unsigned int *__flags,
  52                                        const char *__symname,
  53                                        long int *__framesizep);
  54 extern unsigned int la_i86_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx,
  55                                         uintptr_t *__refcook,
  56                                         uintptr_t *__defcook,
  57                                         const La_i86_regs *__inregs,
  58                                         La_i86_retval *__outregs,
  59                                         const char *symname);
  60
  61 __END_DECLS
  62
  63 #else
  64
  65 /* Registers for entry into PLT on x86-64.  */
  66 # if __GNUC_PREREQ (4,0)
  67 typedef float La_x86_64_xmm __attribute__ ((__vector_size__ (16)));
  68 typedef float La_x86_64_ymm __attribute__ ((__vector_size__ (32)));
  69 # else
  70 typedef float La_x86_64_xmm __attribute__ ((__mode__ (__V4SF__)));
  71 # endif
  72
  73 typedef union
  74 {
  75 # if __GNUC_PREREQ (4,0)
  76   La_x86_64_ymm ymm[2];
  77 # endif
  78   La_x86_64_xmm xmm[4];
  79 } La_x86_64_vector __attribute__ ((aligned(16)));
  80
  81 typedef struct La_x86_64_regs
  82 {
  83   uint64_t lr_rdx;
  84   uint64_t lr_r8;
  85   uint64_t lr_r9;
  86   uint64_t lr_rcx;
  87   uint64_t lr_rsi;
  88   uint64_t lr_rdi;
  89   uint64_t lr_rbp;
  90   uint64_t lr_rsp;
  91   La_x86_64_xmm lr_xmm[8];
  92   La_x86_64_vector lr_vector[8];
  93 } La_x86_64_regs;
  94
  95 /* Return values for calls from PLT on x86-64.  */
  96 typedef struct La_x86_64_retval
  97 {
  98   uint64_t lrv_rax;
  99   uint64_t lrv_rdx;
 100   La_x86_64_xmm lrv_xmm0;
 101   La_x86_64_xmm lrv_xmm1;
 102   long double lrv_st0;
 103   long double lrv_st1;
 104   La_x86_64_vector lrv_vector0;
 105   La_x86_64_vector lrv_vector1;
 106 } La_x86_64_retval;
 107
 108
 109 __BEGIN_DECLS
 110
 111 extern Elf64_Addr la_x86_64_gnu_pltenter (Elf64_Sym *__sym,
 112                                           unsigned int __ndx,
 113                                           uintptr_t *__refcook,
 114                                           uintptr_t *__defcook,
 115                                           La_x86_64_regs *__regs,
 116                                           unsigned int *__flags,
 117                                           const char *__symname,
 118                                           long int *__framesizep);
 119 extern unsigned int la_x86_64_gnu_pltexit (Elf64_Sym *__sym,
 120                                            unsigned int __ndx,
 121                                            uintptr_t *__refcook,
 122                                            uintptr_t *__defcook,
 123                                            const La_x86_64_regs *__inregs,
 124                                            La_x86_64_retval *__outregs,
 125                                            const char *__symname);
 126
 127 __END_DECLS
 128
 129 #endif