ports/sysdeps/m68k/sys/ucontext.h

   1 /* Copyright (C) 1997-2014 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 */