sysdeps/m68k/sys/ucontext.h

   1 /* Copyright (C) 1997-2017 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 /* We need the signal context definitions even if they are not exposed
  27    by <signal.h>.  */
  28 #include <bits/types/__sigset_t.h>
  29 #include <bits/sigcontext.h>
  30 #include <bits/sigstack.h>
  31 #include <bits/types/struct_sigstack.h>
  32 #include <bits/types/stack_t.h>
  33 #include <bits/ss_flags.h>
  34
  35
  36 /* Type for general register.  */
  37 typedef int greg_t;
  38
  39 /* Number of general registers.  */
  40 #define NGREG   18
  41
  42 /* Container for all general registers.  */
  43 typedef greg_t gregset_t[NGREG];
  44
  45 #ifdef __USE_MISC
  46 /* Number of each register is the `gregset_t' array.  */
  47 enum
  48 {
  49   R_D0 = 0,
  50 # define R_D0   R_D0
  51   R_D1 = 1,
  52 # define R_D1   R_D1
  53   R_D2 = 2,
  54 # define R_D2   R_D2
  55   R_D3 = 3,
  56 # define R_D3   R_D3
  57   R_D4 = 4,
  58 # define R_D4   R_D4
  59   R_D5 = 5,
  60 # define R_D5   R_D5
  61   R_D6 = 6,
  62 # define R_D6   R_D6
  63   R_D7 = 7,
  64 # define R_D7   R_D7
  65   R_A0 = 8,
  66 # define R_A0   R_A0
  67   R_A1 = 9,
  68 # define R_A1   R_A1
  69   R_A2 = 10,
  70 # define R_A2   R_A2
  71   R_A3 = 11,
  72 # define R_A3   R_A3
  73   R_A4 = 12,
  74 # define R_A4   R_A4
  75   R_A5 = 13,
  76 # define R_A5   R_A5
  77   R_A6 = 14,
  78 # define R_A6   R_A6
  79   R_A7 = 15,
  80 # define R_A7   R_A7
  81   R_SP = 15,
  82 # define R_SP   R_SP
  83   R_PC = 16,
  84 # define R_PC   R_PC
  85   R_PS = 17
  86 # define R_PS   R_PS
  87 };
  88
  89 /* Structure to describe FPU registers.  */
  90 typedef struct fpregset
  91 {
  92   int f_pcr;
  93   int f_psr;
  94   int f_fpiaddr;
  95   int f_fpregs[8][3];
  96 } fpregset_t;
  97 #endif
  98
  99 /* Context to describe whole processor state.  */
 100 typedef struct
 101 {
 102   int version;
 103   gregset_t gregs;
 104 } mcontext_t;
 105
 106 #ifdef __USE_MISC
 107 # define MCONTEXT_VERSION 1
 108 #endif
 109
 110 /* Userlevel context.  */
 111 typedef struct ucontext
 112 {
 113   unsigned long int uc_flags;
 114   struct ucontext *uc_link;
 115   __sigset_t uc_sigmask;
 116   stack_t uc_stack;
 117   mcontext_t uc_mcontext;
 118   long int uc_filler[201];
 119 } ucontext_t;
 120
 121 #endif /* sys/ucontext.h */