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1/* Copyright (C) 2001-2025 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 _SYS_USER_H
19#define _SYS_USER_H 1
20
21/* The whole purpose of this file is for GDB and GDB only. Don't read
22 too much into it. Don't use it for anything other than GDB unless
23 you know what you are doing. */
24
25#ifdef __x86_64__
26
27struct user_fpregs_struct
28{
29 unsigned short int cwd;
30 unsigned short int swd;
31 unsigned short int ftw;
32 unsigned short int fop;
33 __extension__ unsigned long long int rip;
34 __extension__ unsigned long long int rdp;
35 unsigned int mxcsr;
36 unsigned int mxcr_mask;
37 unsigned int st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
38 unsigned int xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
39 unsigned int padding[24];
40};
41
42struct user_regs_struct
43{
44 __extension__ unsigned long long int r15;
45 __extension__ unsigned long long int r14;
46 __extension__ unsigned long long int r13;
47 __extension__ unsigned long long int r12;
48 __extension__ unsigned long long int rbp;
49 __extension__ unsigned long long int rbx;
50 __extension__ unsigned long long int r11;
51 __extension__ unsigned long long int r10;
52 __extension__ unsigned long long int r9;
53 __extension__ unsigned long long int r8;
54 __extension__ unsigned long long int rax;
55 __extension__ unsigned long long int rcx;
56 __extension__ unsigned long long int rdx;
57 __extension__ unsigned long long int rsi;
58 __extension__ unsigned long long int rdi;
59 __extension__ unsigned long long int orig_rax;
60 __extension__ unsigned long long int rip;
61 __extension__ unsigned long long int cs;
62 __extension__ unsigned long long int eflags;
63 __extension__ unsigned long long int rsp;
64 __extension__ unsigned long long int ss;
65 __extension__ unsigned long long int fs_base;
66 __extension__ unsigned long long int gs_base;
67 __extension__ unsigned long long int ds;
68 __extension__ unsigned long long int es;
69 __extension__ unsigned long long int fs;
70 __extension__ unsigned long long int gs;
71};
72
73struct user
74{
75 struct user_regs_struct regs;
76 int u_fpvalid;
77 struct user_fpregs_struct i387;
78 __extension__ unsigned long long int u_tsize;
79 __extension__ unsigned long long int u_dsize;
80 __extension__ unsigned long long int u_ssize;
81 __extension__ unsigned long long int start_code;
82 __extension__ unsigned long long int start_stack;
83 __extension__ long long int signal;
84 int reserved;
85 __extension__ union
86 {
87 struct user_regs_struct* u_ar0;
88 __extension__ unsigned long long int __u_ar0_word;
89 };
90 __extension__ union
91 {
92 struct user_fpregs_struct* u_fpstate;
93 __extension__ unsigned long long int __u_fpstate_word;
94 };
95 __extension__ unsigned long long int magic;
96 char u_comm [32];
97 __extension__ unsigned long long int u_debugreg [8];
98};
99
100#else
101/* These are the 32-bit x86 structures. */
102struct user_fpregs_struct
103{
104 long int cwd;
105 long int swd;
106 long int twd;
107 long int fip;
108 long int fcs;
109 long int foo;
110 long int fos;
111 long int st_space [20];
112};
113
114struct user_fpxregs_struct
115{
116 unsigned short int cwd;
117 unsigned short int swd;
118 unsigned short int twd;
119 unsigned short int fop;
120 long int fip;
121 long int fcs;
122 long int foo;
123 long int fos;
124 long int mxcsr;
125 long int reserved;
126 long int st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
127 long int xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
128 long int padding[56];
129};
130
131struct user_regs_struct
132{
133 long int ebx;
134 long int ecx;
135 long int edx;
136 long int esi;
137 long int edi;
138 long int ebp;
139 long int eax;
140 long int xds;
141 long int xes;
142 long int xfs;
143 long int xgs;
144 long int orig_eax;
145 long int eip;
146 long int xcs;
147 long int eflags;
148 long int esp;
149 long int xss;
150};
151
152struct user
153{
154 struct user_regs_struct regs;
155 int u_fpvalid;
156 struct user_fpregs_struct i387;
157 unsigned long int u_tsize;
158 unsigned long int u_dsize;
159 unsigned long int u_ssize;
160 unsigned long int start_code;
161 unsigned long int start_stack;
162 long int signal;
163 int reserved;
164 struct user_regs_struct* u_ar0;
165 struct user_fpregs_struct* u_fpstate;
166 unsigned long int magic;
167 char u_comm [32];
168 int u_debugreg [8];
169};
170#endif /* __x86_64__ */
171
172#define PAGE_SHIFT 12
173#define PAGE_SIZE (1UL << PAGE_SHIFT)
174#define PAGE_MASK (~(PAGE_SIZE-1))
175#define NBPG PAGE_SIZE
176#define UPAGES 1
177#define HOST_TEXT_START_ADDR (u.start_code)
178#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
179
180#endif /* _SYS_USER_H */