1 /* Copyright (C) 2004-2023 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, see
16 <https://www.gnu.org/licenses/>. */
17
18 #ifndef _LINK_H
19 # error "Never include <bits/link.h> directly; use <link.h> instead."
20 #endif
21
22
23 #ifndef __x86_64__
24 /* Registers for entry into PLT on IA-32. */
25 typedef struct La_i86_regs
26 {
27 uint32_t lr_edx;
28 uint32_t lr_ecx;
29 uint32_t lr_eax;
30 uint32_t lr_ebp;
31 uint32_t lr_esp;
32 } La_i86_regs;
33
34 /* Return values for calls from PLT on IA-32. */
35 typedef struct La_i86_retval
36 {
37 uint32_t lrv_eax;
38 uint32_t lrv_edx;
39 long double lrv_st0;
40 long double lrv_st1;
41 uint64_t __glibc_unused1;
42 uint64_t __glibc_unused2;
43 } La_i86_retval;
44
45
46 __BEGIN_DECLS
47
48 extern Elf32_Addr la_i86_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx,
49 uintptr_t *__refcook,
50 uintptr_t *__defcook,
51 La_i86_regs *__regs,
52 unsigned int *__flags,
53 const char *__symname,
54 long int *__framesizep);
55 extern unsigned int la_i86_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx,
56 uintptr_t *__refcook,
57 uintptr_t *__defcook,
58 const La_i86_regs *__inregs,
59 La_i86_retval *__outregs,
60 const char *symname);
61
62 __END_DECLS
63
64 #else
65
66 /* Registers for entry into PLT on x86-64. */
67 # if __GNUC_PREREQ (4,0)
68 typedef float La_x86_64_xmm __attribute__ ((__vector_size__ (16)));
69 typedef float La_x86_64_ymm
70 __attribute__ ((__vector_size__ (32), __aligned__ (16)));
71 typedef double La_x86_64_zmm
72 __attribute__ ((__vector_size__ (64), __aligned__ (16)));
73 # else
74 typedef float La_x86_64_xmm __attribute__ ((__mode__ (__V4SF__)));
75 # endif
76
77 typedef union
78 {
79 # if __GNUC_PREREQ (4,0)
80 La_x86_64_ymm ymm[2];
81 La_x86_64_zmm zmm[1];
82 # endif
83 La_x86_64_xmm xmm[4];
84 } La_x86_64_vector __attribute__ ((__aligned__ (16)));
85
86 typedef struct La_x86_64_regs
87 {
88 uint64_t lr_rdx;
89 uint64_t lr_r8;
90 uint64_t lr_r9;
91 uint64_t lr_rcx;
92 uint64_t lr_rsi;
93 uint64_t lr_rdi;
94 uint64_t lr_rbp;
95 uint64_t lr_rsp;
96 La_x86_64_xmm lr_xmm[8];
97 La_x86_64_vector lr_vector[8];
98 #ifndef __ILP32__
99 __int128_t __glibc_unused1[4];
100 #endif
101 } La_x86_64_regs;
102
103 /* Return values for calls from PLT on x86-64. */
104 typedef struct La_x86_64_retval
105 {
106 uint64_t lrv_rax;
107 uint64_t lrv_rdx;
108 La_x86_64_xmm lrv_xmm0;
109 La_x86_64_xmm lrv_xmm1;
110 long double lrv_st0;
111 long double lrv_st1;
112 La_x86_64_vector lrv_vector0;
113 La_x86_64_vector lrv_vector1;
114 #ifndef __ILP32__
115 __int128_t __glibc_unused1;
116 __int128_t __glibc_unused2;
117 #endif
118 } La_x86_64_retval;
119
120 #define La_x32_regs La_x86_64_regs
121 #define La_x32_retval La_x86_64_retval
122
123 __BEGIN_DECLS
124
125 extern Elf64_Addr la_x86_64_gnu_pltenter (Elf64_Sym *__sym,
126 unsigned int __ndx,
127 uintptr_t *__refcook,
128 uintptr_t *__defcook,
129 La_x86_64_regs *__regs,
130 unsigned int *__flags,
131 const char *__symname,
132 long int *__framesizep);
133 extern unsigned int la_x86_64_gnu_pltexit (Elf64_Sym *__sym,
134 unsigned int __ndx,
135 uintptr_t *__refcook,
136 uintptr_t *__defcook,
137 const La_x86_64_regs *__inregs,
138 La_x86_64_retval *__outregs,
139 const char *__symname);
140
141 extern Elf32_Addr la_x32_gnu_pltenter (Elf32_Sym *__sym,
142 unsigned int __ndx,
143 uintptr_t *__refcook,
144 uintptr_t *__defcook,
145 La_x32_regs *__regs,
146 unsigned int *__flags,
147 const char *__symname,
148 long int *__framesizep);
149 extern unsigned int la_x32_gnu_pltexit (Elf32_Sym *__sym,
150 unsigned int __ndx,
151 uintptr_t *__refcook,
152 uintptr_t *__defcook,
153 const La_x32_regs *__inregs,
154 La_x32_retval *__outregs,
155 const char *__symname);
156
157 __END_DECLS
158
159 #endif