sysdeps/am33/sys/ucontext.h

   1 /* Copyright 1997, 1999, 2000, 2002 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 Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    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    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 /* AM33/2.0 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   28
  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   REG_D0 = 0,
  40 #define REG_D0  REG_D0
  41   REG_D1,
  42 #define REG_D1  REG_D1
  43   REG_D2,
  44 #define REG_D2  REG_D2
  45   REG_D3,
  46 #define REG_D3  REG_D3
  47   REG_A0,
  48 #define REG_A0  REG_A0
  49   REG_A1,
  50 #define REG_A1  REG_A1
  51   REG_A2,
  52 #define REG_A2  REG_A2
  53   REG_A3,
  54 #define REG_A3  REG_A3
  55   REG_E0,
  56 #define REG_E0  REG_E0
  57   REG_E1,
  58 #define REG_E1  REG_E1
  59   REG_E2,
  60 #define REG_E2  REG_E2
  61   REG_E3,
  62 #define REG_E3  REG_E3
  63   REG_E4,
  64 #define REG_E4  REG_E4
  65   REG_E5,
  66 #define REG_E5  REG_E5
  67   REG_E6,
  68 #define REG_E6  REG_E6
  69   REG_E7,
  70 #define REG_E7  REG_E7
  71   REG_LAR,
  72 #define REG_LAR REG_LAR
  73   REG_LIR,
  74 #define REG_LIR REG_LIR
  75   REG_MDR,
  76 #define REG_MDR REG_MDR
  77   REG_MCVF,
  78 #define REG_MCVF        REG_MCVF
  79   REG_MCRL,
  80 #define REG_MCRL        REG_MCRL
  81   REG_MCRH,
  82 #define REG_MCRH        REG_MCRH
  83   REG_MDRQ,
  84 #define REG_MDRQ        REG_MDRQ
  85   REG_SP,
  86 #define REG_SP  REG_SP
  87   REG_EPSW,
  88 #define REG_EPSW        REG_EPSW
  89   REG_PC,
  90 #define REG_PC  REG_PC
  91 };
  92
  93 typedef int freg_t;
  94
  95 /* Structure to describe FPU registers.  */
  96 typedef struct {
  97   union {
  98     double fp_dregs[16];
  99     float fp_fregs[32];
 100     freg_t fp_regs[32];
 101   } regs;
 102   freg_t fpcr;
 103 } fpregset_t;
 104
 105 /* Context to describe whole processor state.  */
 106 typedef struct
 107   {
 108     gregset_t gregs;
 109     fpregset_t fpregs;
 110   } mcontext_t;
 111
 112 /* Userlevel context.  */
 113 typedef struct ucontext
 114   {
 115     unsigned long int uc_flags;
 116     struct ucontext *uc_link;
 117     __sigset_t uc_sigmask;
 118     stack_t uc_stack;
 119     mcontext_t uc_mcontext;
 120     long int uc_filler[5];
 121   } ucontext_t;
 122
 123 #endif /* sys/ucontext.h */