sys/arch/alpha/include/mcontext.h

   1 /*      $NetBSD: mcontext.h,v 1.4 2005/12/11 12:16:16 christos Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Klaus Klein.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _ALPHA_MCONTEXT_H_
  33 #define _ALPHA_MCONTEXT_H_
  34
  35 /*
  36  * General register state (important: 0-31 maps to `struct reg')
  37  */
  38 #define _NGREG          34      /* 0-31, PC, PS */
  39 typedef unsigned long   __greg_t;
  40 typedef __greg_t        __gregset_t[_NGREG];
  41
  42 /* Convenience synonyms */
  43 #define _REG_V0         0
  44 #define _REG_T0         1
  45 #define _REG_T1         2
  46 #define _REG_T2         3
  47 #define _REG_T3         4
  48 #define _REG_T4         5
  49 #define _REG_T5         6
  50 #define _REG_T6         7
  51 #define _REG_T7         8
  52 #define _REG_S0         9
  53 #define _REG_S1         10
  54 #define _REG_S2         11
  55 #define _REG_S3         12
  56 #define _REG_S4         13
  57 #define _REG_S5         14
  58 #define _REG_S6         15
  59 #define _REG_A0         16
  60 #define _REG_A1         17
  61 #define _REG_A2         18
  62 #define _REG_A3         19
  63 #define _REG_A4         20
  64 #define _REG_A5         21
  65 #define _REG_T8         22
  66 #define _REG_T9         23
  67 #define _REG_T10        24
  68 #define _REG_T11        25
  69 #define _REG_RA         26
  70 #define _REG_T12        27
  71 #define _REG_PV         27
  72 #define _REG_AT         28
  73 #define _REG_GP         29
  74 #define _REG_SP         30
  75 #define _REG_UNIQUE     31
  76 #define _REG_PC         32
  77 #define _REG_PS         33
  78
  79 /*
  80  * Floating point register state (important: maps to `struct fpreg')
  81  */
  82 typedef struct {
  83         union {
  84                 unsigned long   __fp_regs[32];
  85                 double          __fp_dregs[32];
  86         }               __fp_fr;
  87         unsigned long   __fp_fpcr;
  88 } __fpregset_t;
  89
  90 typedef struct {
  91         __gregset_t     __gregs;
  92         __fpregset_t    __fpregs;
  93 } mcontext_t;
  94
  95 /* Machine-dependent uc_flags */
  96 #define _UC_UNIQUE      0x20    /* valid process-unique value in _REG_UNIQUE */
  97
  98 #define _UC_MACHINE_SP(uc)      ((uc)->uc_mcontext.__gregs[_REG_SP])
  99 #define _UC_MACHINE_PC(uc)      ((uc)->uc_mcontext.__gregs[_REG_PC])
 100 #define _UC_MACHINE_INTRV(uc)   ((uc)->uc_mcontext.__gregs[_REG_V0])
 101
 102 #define _UC_MACHINE_SET_PC(uc, pc)      _UC_MACHINE_PC(uc) = (pc)
 103
 104 #endif  /* !_ALPHA_MCONTEXT_H_ */