1 /* Copyright (C) 1999-2021 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 /* Where is System V/SH ABI? */ 19 20 #ifndef _SYS_UCONTEXT_H 21 #define _SYS_UCONTEXT_H 1 22 23 #include <features.h> 24 25 #include <bits/types/sigset_t.h> 26 #include <bits/types/stack_t.h> 27 28 29 typedef int greg_t; 30 31 /* Number of general registers. */ 32 #define __NGREG 16 33 #ifdef __USE_MISC 34 # define NGREG __NGREG 35 #endif 36 37 /* Container for all general registers. */ 38 typedef greg_t gregset_t[__NGREG]; 39 40 #ifdef __USE_MISC 41 /* Number of each register is the `gregset_t' array. */ 42 enum 43 { 44 REG_R0 = 0, 45 # define REG_R0 REG_R0 46 REG_R1 = 1, 47 # define REG_R1 REG_R1 48 REG_R2 = 2, 49 # define REG_R2 REG_R2 50 REG_R3 = 3, 51 # define REG_R3 REG_R3 52 REG_R4 = 4, 53 # define REG_R4 REG_R4 54 REG_R5 = 5, 55 # define REG_R5 REG_R5 56 REG_R6 = 6, 57 # define REG_R6 REG_R6 58 REG_R7 = 7, 59 # define REG_R7 REG_R7 60 REG_R8 = 8, 61 # define REG_R8 REG_R8 62 REG_R9 = 9, 63 # define REG_R9 REG_R9 64 REG_R10 = 10, 65 # define REG_R10 REG_R10 66 REG_R11 = 11, 67 # define REG_R11 REG_R11 68 REG_R12 = 12, 69 # define REG_R12 REG_R12 70 REG_R13 = 13, 71 # define REG_R13 REG_R13 72 REG_R14 = 14, 73 # define REG_R14 REG_R14 74 REG_R15 = 15, 75 # define REG_R15 REG_R15 76 }; 77 #endif 78 79 typedef int freg_t; 80 81 /* Number of FPU registers. */ 82 #define __NFPREG 16 83 #ifdef __USE_MISC 84 # define NFPREG __NFPREG 85 #endif 86 87 /* Structure to describe FPU registers. */ 88 typedef freg_t fpregset_t[__NFPREG]; 89 90 #ifdef __USE_MISC 91 # define __ctx(fld) fld 92 #else 93 # define __ctx(fld) __ ## fld 94 #endif 95 96 /* Context to describe whole processor state. */ 97 typedef struct 98 { 99 unsigned int __ctx(oldmask); 100 gregset_t __ctx(gregs); 101 unsigned int __ctx(pc); 102 unsigned int __ctx(pr); 103 unsigned int __ctx(sr); 104 unsigned int __ctx(gbr); 105 unsigned int __ctx(mach); 106 unsigned int __ctx(macl); 107 fpregset_t __ctx(fpregs); 108 fpregset_t __ctx(xfpregs); 109 unsigned int __ctx(fpscr); 110 unsigned int __ctx(fpul); 111 unsigned int __ctx(ownedfp); 112 } mcontext_t; 113 114 /* Userlevel context. */ 115 typedef struct ucontext_t 116 { 117 unsigned long int __ctx(uc_flags); 118 struct ucontext_t *uc_link; 119 stack_t uc_stack; 120 mcontext_t uc_mcontext; 121 sigset_t uc_sigmask; 122 } ucontext_t; 123 124 #undef __ctx 125 126 #endif /* sys/ucontext.h */ 127