| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Copyright (C) 1997-2016 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 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | /* System V/m68k ABI compliant context switching support. */ |
| 19 | |
| 20 | #ifndef _SYS_UCONTEXT_H |
| 21 | #define _SYS_UCONTEXT_H 1 |
| 22 | |
| 23 | #include <features.h> |
| 24 | #include <signal.h> |
| 25 | |
| 26 | /* Type for general register. */ |
| 27 | typedef int greg_t; |
| 28 | |
| 29 | /* Number of general registers. */ |
| 30 | #define NGREG 18 |
| 31 | |
| 32 | /* Container for all general registers. */ |
| 33 | typedef greg_t gregset_t[NGREG]; |
| 34 | |
| 35 | /* Number of each register is the `gregset_t' array. */ |
| 36 | enum |
| 37 | { |
| 38 | R_D0 = 0, |
| 39 | #define R_D0 R_D0 |
| 40 | R_D1 = 1, |
| 41 | #define R_D1 R_D1 |
| 42 | R_D2 = 2, |
| 43 | #define R_D2 R_D2 |
| 44 | R_D3 = 3, |
| 45 | #define R_D3 R_D3 |
| 46 | R_D4 = 4, |
| 47 | #define R_D4 R_D4 |
| 48 | R_D5 = 5, |
| 49 | #define R_D5 R_D5 |
| 50 | R_D6 = 6, |
| 51 | #define R_D6 R_D6 |
| 52 | R_D7 = 7, |
| 53 | #define R_D7 R_D7 |
| 54 | R_A0 = 8, |
| 55 | #define R_A0 R_A0 |
| 56 | R_A1 = 9, |
| 57 | #define R_A1 R_A1 |
| 58 | R_A2 = 10, |
| 59 | #define R_A2 R_A2 |
| 60 | R_A3 = 11, |
| 61 | #define R_A3 R_A3 |
| 62 | R_A4 = 12, |
| 63 | #define R_A4 R_A4 |
| 64 | R_A5 = 13, |
| 65 | #define R_A5 R_A5 |
| 66 | R_A6 = 14, |
| 67 | #define R_A6 R_A6 |
| 68 | R_A7 = 15, |
| 69 | #define R_A7 R_A7 |
| 70 | R_SP = 15, |
| 71 | #define R_SP R_SP |
| 72 | R_PC = 16, |
| 73 | #define R_PC R_PC |
| 74 | R_PS = 17 |
| 75 | #define R_PS R_PS |
| 76 | }; |
| 77 | |
| 78 | /* Structure to describe FPU registers. */ |
| 79 | typedef struct fpregset |
| 80 | { |
| 81 | int f_pcr; |
| 82 | int f_psr; |
| 83 | int f_fpiaddr; |
| 84 | int f_fpregs[8][3]; |
| 85 | } fpregset_t; |
| 86 | |
| 87 | /* Context to describe whole processor state. */ |
| 88 | typedef struct |
| 89 | { |
| 90 | int version; |
| 91 | gregset_t gregs; |
| 92 | } mcontext_t; |
| 93 | |
| 94 | #define MCONTEXT_VERSION 1 |
| 95 | |
| 96 | /* Userlevel context. */ |
| 97 | typedef struct ucontext |
| 98 | { |
| 99 | unsigned long int uc_flags; |
| 100 | struct ucontext *uc_link; |
| 101 | __sigset_t uc_sigmask; |
| 102 | stack_t uc_stack; |
| 103 | mcontext_t uc_mcontext; |
| 104 | long int uc_filler[201]; |
| 105 | } ucontext_t; |
| 106 | |
| 107 | #endif /* sys/ucontext.h */ |