1 /* Copyright (C) 2005-2022 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    <https://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 typedef union
24 {
25   float s;
26   double d;
27   long double q;
28 } La_aarch64_vector;
29 
30 /* Registers for entry into PLT on AArch64.  */
31 typedef struct La_aarch64_regs
32 {
33   uint64_t          lr_xreg[9];
34   La_aarch64_vector lr_vreg[8];
35   uint64_t          lr_sp;
36   uint64_t          lr_lr;
37   void              *lr_vpcs;
38 } La_aarch64_regs;
39 
40 /* Return values for calls from PLT on AArch64.  */
41 typedef struct La_aarch64_retval
42 {
43   /* Up to eight integer registers can be used for a return value.  */
44   uint64_t          lrv_xreg[8];
45   /* Up to eight V registers can be used for a return value.  */
46   La_aarch64_vector lrv_vreg[8];
47   void              *lrv_vpcs;
48 } La_aarch64_retval;
49 __BEGIN_DECLS
50 
51 extern ElfW(Addr)
52 la_aarch64_gnu_pltenter (ElfW(Sym) *__sym, unsigned int __ndx,
53 			 uintptr_t *__refcook,
54 			 uintptr_t *__defcook,
55 			 La_aarch64_regs *__regs,
56 			 unsigned int *__flags,
57 			 const char *__symname,
58 			 long int *__framesizep);
59 
60 extern unsigned int
61 la_aarch64_gnu_pltexit (ElfW(Sym) *__sym, unsigned int __ndx,
62 			uintptr_t *__refcook,
63 			uintptr_t *__defcook,
64 			const La_aarch64_regs *__inregs,
65 			La_aarch64_retval *__outregs,
66 			const char *__symname);
67 
68 __END_DECLS
69