]>
Commit | Line | Data |
---|---|---|
2b778ceb | 1 | /* Copyright (C) 1997-2021 Free Software Foundation, Inc. |
dfd2257a UD |
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 | |
41bdb6e2 AJ |
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. | |
dfd2257a UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
dfd2257a | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
dfd2257a UD |
17 | |
18 | /* System V/i386 ABI compliant context switching support. */ | |
19 | ||
20 | #ifndef _SYS_UCONTEXT_H | |
21 | #define _SYS_UCONTEXT_H 1 | |
22 | ||
23 | #include <features.h> | |
dfd2257a | 24 | |
cfed8ece | 25 | #include <bits/types/sigset_t.h> |
0bcec532 | 26 | #include <bits/types/stack_t.h> |
c66b29f9 ZW |
27 | |
28 | ||
dfd2257a UD |
29 | /* Type for general register. */ |
30 | typedef int greg_t; | |
31 | ||
32 | /* Number of general registers. */ | |
139904b7 JM |
33 | #define __NGREG 19 |
34 | #ifdef __USE_MISC | |
35 | # define NGREG __NGREG | |
36 | #endif | |
dfd2257a UD |
37 | |
38 | /* Container for all general registers. */ | |
139904b7 | 39 | typedef greg_t gregset_t[__NGREG]; |
dfd2257a | 40 | |
5df4854e | 41 | #ifdef __USE_MISC |
dfd2257a UD |
42 | /* Number of each register is the `gregset_t' array. */ |
43 | enum | |
44 | { | |
4ae18693 | 45 | REG_GS = 0, |
5df4854e | 46 | # define REG_GS REG_GS |
4ae18693 | 47 | REG_FS, |
5df4854e | 48 | # define REG_FS REG_FS |
4ae18693 | 49 | REG_ES, |
5df4854e | 50 | # define REG_ES REG_ES |
4ae18693 | 51 | REG_DS, |
5df4854e | 52 | # define REG_DS REG_DS |
4ae18693 | 53 | REG_EDI, |
5df4854e | 54 | # define REG_EDI REG_EDI |
4ae18693 | 55 | REG_ESI, |
5df4854e | 56 | # define REG_ESI REG_ESI |
4ae18693 | 57 | REG_EBP, |
5df4854e | 58 | # define REG_EBP REG_EBP |
4ae18693 | 59 | REG_ESP, |
5df4854e | 60 | # define REG_ESP REG_ESP |
4ae18693 | 61 | REG_EBX, |
5df4854e | 62 | # define REG_EBX REG_EBX |
4ae18693 | 63 | REG_EDX, |
5df4854e | 64 | # define REG_EDX REG_EDX |
4ae18693 | 65 | REG_ECX, |
5df4854e | 66 | # define REG_ECX REG_ECX |
4ae18693 | 67 | REG_EAX, |
5df4854e | 68 | # define REG_EAX REG_EAX |
4ae18693 | 69 | REG_TRAPNO, |
5df4854e | 70 | # define REG_TRAPNO REG_TRAPNO |
4ae18693 | 71 | REG_ERR, |
5df4854e | 72 | # define REG_ERR REG_ERR |
4ae18693 | 73 | REG_EIP, |
5df4854e | 74 | # define REG_EIP REG_EIP |
4ae18693 | 75 | REG_CS, |
5df4854e | 76 | # define REG_CS REG_CS |
4ae18693 | 77 | REG_EFL, |
5df4854e | 78 | # define REG_EFL REG_EFL |
4ae18693 | 79 | REG_UESP, |
5df4854e | 80 | # define REG_UESP REG_UESP |
4ae18693 | 81 | REG_SS |
5df4854e | 82 | # define REG_SS REG_SS |
dfd2257a | 83 | }; |
5df4854e | 84 | #endif |
dfd2257a | 85 | |
139904b7 JM |
86 | #ifdef __USE_MISC |
87 | # define __ctx(fld) fld | |
88 | # define __ctxt(tag) tag | |
89 | #else | |
90 | # define __ctx(fld) __ ## fld | |
91 | # define __ctxt(tag) /* Empty. */ | |
92 | #endif | |
93 | ||
dfd2257a | 94 | /* Structure to describe FPU registers. */ |
81b032c8 | 95 | typedef struct |
dfd2257a UD |
96 | { |
97 | union | |
98 | { | |
139904b7 | 99 | struct __ctxt(fpchip_state) |
dfd2257a | 100 | { |
139904b7 JM |
101 | int __ctx(state)[27]; |
102 | int __ctx(status); | |
103 | } __ctx(fpchip_state); | |
dfd2257a | 104 | |
139904b7 | 105 | struct __ctxt(fp_emul_space) |
dfd2257a | 106 | { |
139904b7 JM |
107 | char __ctx(fp_emul)[246]; |
108 | char __ctx(fp_epad)[2]; | |
109 | } __ctx(fp_emul_space); | |
dfd2257a | 110 | |
139904b7 JM |
111 | int __ctx(f_fpregs)[62]; |
112 | } __ctx(fp_reg_set); | |
dfd2257a | 113 | |
139904b7 | 114 | long int __ctx(f_wregs)[33]; |
dfd2257a UD |
115 | } fpregset_t; |
116 | ||
117 | /* Context to describe whole processor state. */ | |
118 | typedef struct | |
119 | { | |
139904b7 JM |
120 | gregset_t __ctx(gregs); |
121 | fpregset_t __ctx(fpregs); | |
dfd2257a UD |
122 | } mcontext_t; |
123 | ||
124 | /* Userlevel context. */ | |
25128773 | 125 | typedef struct ucontext_t |
dfd2257a | 126 | { |
3d452dab | 127 | unsigned long int __ctx(uc_flags); |
25128773 | 128 | struct ucontext_t *uc_link; |
cfed8ece | 129 | sigset_t uc_sigmask; |
dfd2257a UD |
130 | stack_t uc_stack; |
131 | mcontext_t uc_mcontext; | |
3d452dab | 132 | long int __glibc_reserved1[5]; |
dfd2257a UD |
133 | } ucontext_t; |
134 | ||
3d452dab JM |
135 | #undef __ctx |
136 | #undef __ctxt | |
137 | ||
dfd2257a | 138 | #endif /* sys/ucontext.h */ |