sysdeps/m68k/sys/ucontext.h

   1 /* Copyright (C) 1997, 1999 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* System V/m68k ABI compliant context switching support.  */
  20
  21 #ifndef _SYS_UCONTEXT_H
  22 #define _SYS_UCONTEXT_H 1
  23
  24 #include <features.h>
  25 #include <signal.h>
  26
  27 /* Type for general register.  */
  28 typedef int greg_t;
  29
  30 /* Number of general registers.  */
  31 #define NGREG   18
  32
  33 /* Container for all general registers.  */
  34 typedef greg_t gregset_t[NGREG];
  35
  36 /* Number of each register is the `gregset_t' array.  */
  37 enum
  38 {
  39   R_D0 = 0,
  40 #define R_D0    R_D0
  41   R_D1 = 1,
  42 #define R_D1    R_D1
  43   R_D2 = 2,
  44 #define R_D2    R_D2
  45   R_D3 = 3,
  46 #define R_D3    R_D3
  47   R_D4 = 4,
  48 #define R_D4    R_D4
  49   R_D5 = 5,
  50 #define R_D5    R_D5
  51   R_D6 = 6,
  52 #define R_D6    R_D6
  53   R_D7 = 7,
  54 #define R_D7    R_D7
  55   R_A0 = 8,
  56 #define R_A0    R_A0
  57   R_A1 = 9,
  58 #define R_A1    R_A1
  59   R_A2 = 10,
  60 #define R_A2    R_A2
  61   R_A3 = 11,
  62 #define R_A3    R_A3
  63   R_A4 = 12,
  64 #define R_A4    R_A4
  65   R_A5 = 13,
  66 #define R_A5    R_A5
  67   R_A6 = 14,
  68 #define R_A6    R_A6
  69   R_A7 = 15,
  70 #define R_A7    R_A7
  71   R_SP = 15,
  72 #define R_SP    R_SP
  73   R_PC = 16,
  74 #define R_PC    R_PC
  75   R_PS = 17
  76 #define R_PS    R_PS
  77 };
  78
  79 /* Structure to describe FPU registers.  */
  80 typedef struct fpregset
  81 {
  82   int f_pcr;
  83   int f_psr;
  84   int f_fpiaddr;
  85   int f_fpregs[8][3];
  86 } fpregset_t;
  87
  88 /* Context to describe whole processor state.  */
  89 typedef struct
  90 {
  91   int version;
  92   gregset_t gregs;
  93 } mcontext_t;
  94
  95 #define MCONTEXT_VERSION 1
  96
  97 /* Userlevel context.  */
  98 typedef struct ucontext
  99 {
 100   unsigned long int uc_flags;
 101   struct ucontext *uc_link;
 102   __sigset_t uc_sigmask;
 103   stack_t uc_stack;
 104   mcontext_t uc_mcontext;
 105   long int uc_filler[201];
 106 } ucontext_t;
 107
 108 #endif /* sys/ucontext.h */