sysdeps/unix/sysv/linux/m68k/sys/ucontext.h

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