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688903eb | 1 | /* Copyright (C) 1998-2018 Free Software Foundation, Inc. |
77e906bb 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 | |
3214b89b 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. | |
77e906bb 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 | |
3214b89b | 12 | Lesser General Public License for more details. |
77e906bb | 13 | |
3214b89b | 14 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
15 | License along with the GNU C Library. If not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
77e906bb UD |
17 | |
18 | /* System V/ARM ABI compliant context switching support. */ | |
19 | ||
20 | #ifndef _SYS_UCONTEXT_H | |
21 | #define _SYS_UCONTEXT_H 1 | |
22 | ||
23 | #include <features.h> | |
77e906bb | 24 | |
cfed8ece | 25 | #include <bits/types/sigset_t.h> |
0bcec532 | 26 | #include <bits/types/stack_t.h> |
c66b29f9 | 27 | |
7a11d626 | 28 | |
4fa9b3bf JM |
29 | #ifdef __USE_MISC |
30 | # define __ctx(fld) fld | |
31 | #else | |
32 | # define __ctx(fld) __ ## fld | |
33 | #endif | |
34 | ||
5df4854e | 35 | #ifdef __USE_MISC |
77e906bb UD |
36 | typedef int greg_t; |
37 | ||
38 | /* Number of general registers. */ | |
5df4854e | 39 | # define NGREG 18 |
77e906bb UD |
40 | |
41 | /* Container for all general registers. */ | |
c1e30fd8 | 42 | typedef greg_t gregset_t[NGREG]; |
77e906bb UD |
43 | |
44 | /* Number of each register is the `gregset_t' array. */ | |
45 | enum | |
46 | { | |
c1e30fd8 | 47 | REG_R0 = 0, |
5df4854e | 48 | # define REG_R0 REG_R0 |
c1e30fd8 | 49 | REG_R1 = 1, |
5df4854e | 50 | # define REG_R1 REG_R1 |
c1e30fd8 | 51 | REG_R2 = 2, |
5df4854e | 52 | # define REG_R2 REG_R2 |
c1e30fd8 | 53 | REG_R3 = 3, |
5df4854e | 54 | # define REG_R3 REG_R3 |
c1e30fd8 | 55 | REG_R4 = 4, |
5df4854e | 56 | # define REG_R4 REG_R4 |
c1e30fd8 | 57 | REG_R5 = 5, |
5df4854e | 58 | # define REG_R5 REG_R5 |
c1e30fd8 | 59 | REG_R6 = 6, |
5df4854e | 60 | # define REG_R6 REG_R6 |
c1e30fd8 | 61 | REG_R7 = 7, |
5df4854e | 62 | # define REG_R7 REG_R7 |
c1e30fd8 | 63 | REG_R8 = 8, |
5df4854e | 64 | # define REG_R8 REG_R8 |
c1e30fd8 | 65 | REG_R9 = 9, |
5df4854e | 66 | # define REG_R9 REG_R9 |
c1e30fd8 | 67 | REG_R10 = 10, |
5df4854e | 68 | # define REG_R10 REG_R10 |
c1e30fd8 | 69 | REG_R11 = 11, |
5df4854e | 70 | # define REG_R11 REG_R11 |
c1e30fd8 | 71 | REG_R12 = 12, |
5df4854e | 72 | # define REG_R12 REG_R12 |
c1e30fd8 | 73 | REG_R13 = 13, |
5df4854e | 74 | # define REG_R13 REG_R13 |
c1e30fd8 | 75 | REG_R14 = 14, |
5df4854e | 76 | # define REG_R14 REG_R14 |
c1e30fd8 | 77 | REG_R15 = 15 |
5df4854e | 78 | # define REG_R15 REG_R15 |
77e906bb UD |
79 | }; |
80 | ||
c1e30fd8 PG |
81 | struct _libc_fpstate |
82 | { | |
83 | struct | |
84 | { | |
85 | unsigned int sign1:1; | |
86 | unsigned int unused:15; | |
87 | unsigned int sign2:1; | |
88 | unsigned int exponent:14; | |
89 | unsigned int j:1; | |
90 | unsigned int mantissa1:31; | |
91 | unsigned int mantissa0:32; | |
92 | } fpregs[8]; | |
93 | unsigned int fpsr:32; | |
94 | unsigned int fpcr:32; | |
95 | unsigned char ftype[8]; | |
96 | unsigned int init_flag; | |
97 | }; | |
77e906bb | 98 | /* Structure to describe FPU registers. */ |
c1e30fd8 | 99 | typedef struct _libc_fpstate fpregset_t; |
5df4854e | 100 | #endif |
77e906bb | 101 | |
7a11d626 DJ |
102 | /* Context to describe whole processor state. This only describes |
103 | the core registers; coprocessor registers get saved elsewhere | |
104 | (e.g. in uc_regspace, or somewhere unspecified on the stack | |
105 | during non-RT signal handlers). */ | |
4fa9b3bf JM |
106 | typedef struct |
107 | { | |
108 | unsigned long int __ctx(trap_no); | |
109 | unsigned long int __ctx(error_code); | |
110 | unsigned long int __ctx(oldmask); | |
111 | unsigned long int __ctx(arm_r0); | |
112 | unsigned long int __ctx(arm_r1); | |
113 | unsigned long int __ctx(arm_r2); | |
114 | unsigned long int __ctx(arm_r3); | |
115 | unsigned long int __ctx(arm_r4); | |
116 | unsigned long int __ctx(arm_r5); | |
117 | unsigned long int __ctx(arm_r6); | |
118 | unsigned long int __ctx(arm_r7); | |
119 | unsigned long int __ctx(arm_r8); | |
120 | unsigned long int __ctx(arm_r9); | |
121 | unsigned long int __ctx(arm_r10); | |
122 | unsigned long int __ctx(arm_fp); | |
123 | unsigned long int __ctx(arm_ip); | |
124 | unsigned long int __ctx(arm_sp); | |
125 | unsigned long int __ctx(arm_lr); | |
126 | unsigned long int __ctx(arm_pc); | |
127 | unsigned long int __ctx(arm_cpsr); | |
128 | unsigned long int __ctx(fault_address); | |
129 | } mcontext_t; | |
3d452dab | 130 | |
77e906bb | 131 | /* Userlevel context. */ |
25128773 | 132 | typedef struct ucontext_t |
77e906bb | 133 | { |
3d452dab | 134 | unsigned long __ctx(uc_flags); |
25128773 | 135 | struct ucontext_t *uc_link; |
77e906bb UD |
136 | stack_t uc_stack; |
137 | mcontext_t uc_mcontext; | |
cfed8ece | 138 | sigset_t uc_sigmask; |
3d452dab | 139 | unsigned long __ctx(uc_regspace)[128] __attribute__((__aligned__(8))); |
77e906bb UD |
140 | } ucontext_t; |
141 | ||
3d452dab JM |
142 | #undef __ctx |
143 | ||
77e906bb | 144 | #endif /* sys/ucontext.h */ |