ports/sysdeps/am33/sys/ucontext.h

   1 /* Copyright 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 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.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 /* AM33/2.0 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   28
  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   REG_D0 = 0,
  39 #define REG_D0  REG_D0
  40   REG_D1,
  41 #define REG_D1  REG_D1
  42   REG_D2,
  43 #define REG_D2  REG_D2
  44   REG_D3,
  45 #define REG_D3  REG_D3
  46   REG_A0,
  47 #define REG_A0  REG_A0
  48   REG_A1,
  49 #define REG_A1  REG_A1
  50   REG_A2,
  51 #define REG_A2  REG_A2
  52   REG_A3,
  53 #define REG_A3  REG_A3
  54   REG_E0,
  55 #define REG_E0  REG_E0
  56   REG_E1,
  57 #define REG_E1  REG_E1
  58   REG_E2,
  59 #define REG_E2  REG_E2
  60   REG_E3,
  61 #define REG_E3  REG_E3
  62   REG_E4,
  63 #define REG_E4  REG_E4
  64   REG_E5,
  65 #define REG_E5  REG_E5
  66   REG_E6,
  67 #define REG_E6  REG_E6
  68   REG_E7,
  69 #define REG_E7  REG_E7
  70   REG_LAR,
  71 #define REG_LAR REG_LAR
  72   REG_LIR,
  73 #define REG_LIR REG_LIR
  74   REG_MDR,
  75 #define REG_MDR REG_MDR
  76   REG_MCVF,
  77 #define REG_MCVF        REG_MCVF
  78   REG_MCRL,
  79 #define REG_MCRL        REG_MCRL
  80   REG_MCRH,
  81 #define REG_MCRH        REG_MCRH
  82   REG_MDRQ,
  83 #define REG_MDRQ        REG_MDRQ
  84   REG_SP,
  85 #define REG_SP  REG_SP
  86   REG_EPSW,
  87 #define REG_EPSW        REG_EPSW
  88   REG_PC,
  89 #define REG_PC  REG_PC
  90 };
  91
  92 typedef int freg_t;
  93
  94 /* Structure to describe FPU registers.  */
  95 typedef struct {
  96   union {
  97     double fp_dregs[16];
  98     float fp_fregs[32];
  99     freg_t fp_regs[32];
 100   } regs;
 101   freg_t fpcr;
 102 } fpregset_t;
 103
 104 /* Context to describe whole processor state.  */
 105 typedef struct
 106   {
 107     gregset_t gregs;
 108     fpregset_t fpregs;
 109   } mcontext_t;
 110
 111 /* Userlevel context.  */
 112 typedef struct ucontext
 113   {
 114     unsigned long int uc_flags;
 115     struct ucontext *uc_link;
 116     __sigset_t uc_sigmask;
 117     stack_t uc_stack;
 118     mcontext_t uc_mcontext;
 119     long int uc_filler[5];
 120   } ucontext_t;
 121
 122 #endif /* sys/ucontext.h */