sys/ia64/include/_regset.h

   1 /*-
   2  * Copyright (c) 2002, 2003 Marcel Moolenaar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #ifndef _MACHINE_REGSET_H_
  30 #define _MACHINE_REGSET_H_
  31
  32 /*
  33  * Create register sets, based on the runtime specification. This allows
  34  * us to better reuse code and to copy sets around more efficiently.
  35  * Contexts are defined in terms of these sets. These include trapframe,
  36  * sigframe, pcb, mcontext, reg and fpreg. Other candidates are unwind
  37  * and coredump related contexts.
  38  *
  39  * Notes:
  40  * o  Constant registers (r0, f0 and f1) are not accounted for,
  41  * o  The stacked registers (r32-r127) are not accounted for,
  42  * o  Predicates are not split across sets.
  43  */
  44
  45 /* A single FP register. */
  46 union _ia64_fpreg {
  47         unsigned char   fpr_bits[16];
  48         long double     fpr_flt;
  49 };
  50
  51 /*
  52  * Special registers.
  53  */
  54 struct _special {
  55         unsigned long           sp;
  56         unsigned long           unat;           /* NaT before spilling */
  57         unsigned long           rp;
  58         unsigned long           pr;
  59         unsigned long           pfs;
  60         unsigned long           bspstore;
  61         unsigned long           rnat;
  62         unsigned long           __spare;
  63         /* Userland context and syscalls */
  64         unsigned long           tp;
  65         unsigned long           rsc;
  66         unsigned long           fpsr;
  67         unsigned long           psr;
  68         /* ASYNC: Interrupt specific */
  69         unsigned long           gp;
  70         unsigned long           ndirty;
  71         unsigned long           cfm;
  72         unsigned long           iip;
  73         unsigned long           ifa;
  74         unsigned long           isr;
  75 };
  76
  77 struct _high_fp {
  78         union _ia64_fpreg       fr32;
  79         union _ia64_fpreg       fr33;
  80         union _ia64_fpreg       fr34;
  81         union _ia64_fpreg       fr35;
  82         union _ia64_fpreg       fr36;
  83         union _ia64_fpreg       fr37;
  84         union _ia64_fpreg       fr38;
  85         union _ia64_fpreg       fr39;
  86         union _ia64_fpreg       fr40;
  87         union _ia64_fpreg       fr41;
  88         union _ia64_fpreg       fr42;
  89         union _ia64_fpreg       fr43;
  90         union _ia64_fpreg       fr44;
  91         union _ia64_fpreg       fr45;
  92         union _ia64_fpreg       fr46;
  93         union _ia64_fpreg       fr47;
  94         union _ia64_fpreg       fr48;
  95         union _ia64_fpreg       fr49;
  96         union _ia64_fpreg       fr50;
  97         union _ia64_fpreg       fr51;
  98         union _ia64_fpreg       fr52;
  99         union _ia64_fpreg       fr53;
 100         union _ia64_fpreg       fr54;
 101         union _ia64_fpreg       fr55;
 102         union _ia64_fpreg       fr56;
 103         union _ia64_fpreg       fr57;
 104         union _ia64_fpreg       fr58;
 105         union _ia64_fpreg       fr59;
 106         union _ia64_fpreg       fr60;
 107         union _ia64_fpreg       fr61;
 108         union _ia64_fpreg       fr62;
 109         union _ia64_fpreg       fr63;
 110         union _ia64_fpreg       fr64;
 111         union _ia64_fpreg       fr65;
 112         union _ia64_fpreg       fr66;
 113         union _ia64_fpreg       fr67;
 114         union _ia64_fpreg       fr68;
 115         union _ia64_fpreg       fr69;
 116         union _ia64_fpreg       fr70;
 117         union _ia64_fpreg       fr71;
 118         union _ia64_fpreg       fr72;
 119         union _ia64_fpreg       fr73;
 120         union _ia64_fpreg       fr74;
 121         union _ia64_fpreg       fr75;
 122         union _ia64_fpreg       fr76;
 123         union _ia64_fpreg       fr77;
 124         union _ia64_fpreg       fr78;
 125         union _ia64_fpreg       fr79;
 126         union _ia64_fpreg       fr80;
 127         union _ia64_fpreg       fr81;
 128         union _ia64_fpreg       fr82;
 129         union _ia64_fpreg       fr83;
 130         union _ia64_fpreg       fr84;
 131         union _ia64_fpreg       fr85;
 132         union _ia64_fpreg       fr86;
 133         union _ia64_fpreg       fr87;
 134         union _ia64_fpreg       fr88;
 135         union _ia64_fpreg       fr89;
 136         union _ia64_fpreg       fr90;
 137         union _ia64_fpreg       fr91;
 138         union _ia64_fpreg       fr92;
 139         union _ia64_fpreg       fr93;
 140         union _ia64_fpreg       fr94;
 141         union _ia64_fpreg       fr95;
 142         union _ia64_fpreg       fr96;
 143         union _ia64_fpreg       fr97;
 144         union _ia64_fpreg       fr98;
 145         union _ia64_fpreg       fr99;
 146         union _ia64_fpreg       fr100;
 147         union _ia64_fpreg       fr101;
 148         union _ia64_fpreg       fr102;
 149         union _ia64_fpreg       fr103;
 150         union _ia64_fpreg       fr104;
 151         union _ia64_fpreg       fr105;
 152         union _ia64_fpreg       fr106;
 153         union _ia64_fpreg       fr107;
 154         union _ia64_fpreg       fr108;
 155         union _ia64_fpreg       fr109;
 156         union _ia64_fpreg       fr110;
 157         union _ia64_fpreg       fr111;
 158         union _ia64_fpreg       fr112;
 159         union _ia64_fpreg       fr113;
 160         union _ia64_fpreg       fr114;
 161         union _ia64_fpreg       fr115;
 162         union _ia64_fpreg       fr116;
 163         union _ia64_fpreg       fr117;
 164         union _ia64_fpreg       fr118;
 165         union _ia64_fpreg       fr119;
 166         union _ia64_fpreg       fr120;
 167         union _ia64_fpreg       fr121;
 168         union _ia64_fpreg       fr122;
 169         union _ia64_fpreg       fr123;
 170         union _ia64_fpreg       fr124;
 171         union _ia64_fpreg       fr125;
 172         union _ia64_fpreg       fr126;
 173         union _ia64_fpreg       fr127;
 174 };
 175
 176 /*
 177  * Preserved registers.
 178  */
 179 struct _callee_saved {
 180         unsigned long           unat;           /* NaT after spilling. */
 181         unsigned long           gr4;
 182         unsigned long           gr5;
 183         unsigned long           gr6;
 184         unsigned long           gr7;
 185         unsigned long           br1;
 186         unsigned long           br2;
 187         unsigned long           br3;
 188         unsigned long           br4;
 189         unsigned long           br5;
 190         unsigned long           lc;
 191         unsigned long           __spare;
 192 };
 193
 194 struct _callee_saved_fp {
 195         union _ia64_fpreg       fr2;
 196         union _ia64_fpreg       fr3;
 197         union _ia64_fpreg       fr4;
 198         union _ia64_fpreg       fr5;
 199         union _ia64_fpreg       fr16;
 200         union _ia64_fpreg       fr17;
 201         union _ia64_fpreg       fr18;
 202         union _ia64_fpreg       fr19;
 203         union _ia64_fpreg       fr20;
 204         union _ia64_fpreg       fr21;
 205         union _ia64_fpreg       fr22;
 206         union _ia64_fpreg       fr23;
 207         union _ia64_fpreg       fr24;
 208         union _ia64_fpreg       fr25;
 209         union _ia64_fpreg       fr26;
 210         union _ia64_fpreg       fr27;
 211         union _ia64_fpreg       fr28;
 212         union _ia64_fpreg       fr29;
 213         union _ia64_fpreg       fr30;
 214         union _ia64_fpreg       fr31;
 215 };
 216
 217 /*
 218  * Scratch registers.
 219  */
 220 struct _caller_saved {
 221         unsigned long           unat;           /* NaT after spilling. */
 222         unsigned long           gr2;
 223         unsigned long           gr3;
 224         unsigned long           gr8;
 225         unsigned long           gr9;
 226         unsigned long           gr10;
 227         unsigned long           gr11;
 228         unsigned long           gr14;
 229         unsigned long           gr15;
 230         unsigned long           gr16;
 231         unsigned long           gr17;
 232         unsigned long           gr18;
 233         unsigned long           gr19;
 234         unsigned long           gr20;
 235         unsigned long           gr21;
 236         unsigned long           gr22;
 237         unsigned long           gr23;
 238         unsigned long           gr24;
 239         unsigned long           gr25;
 240         unsigned long           gr26;
 241         unsigned long           gr27;
 242         unsigned long           gr28;
 243         unsigned long           gr29;
 244         unsigned long           gr30;
 245         unsigned long           gr31;
 246         unsigned long           br6;
 247         unsigned long           br7;
 248         unsigned long           ccv;
 249         unsigned long           csd;
 250         unsigned long           ssd;
 251 };
 252
 253 struct _caller_saved_fp {
 254         union _ia64_fpreg       fr6;
 255         union _ia64_fpreg       fr7;
 256         union _ia64_fpreg       fr8;
 257         union _ia64_fpreg       fr9;
 258         union _ia64_fpreg       fr10;
 259         union _ia64_fpreg       fr11;
 260         union _ia64_fpreg       fr12;
 261         union _ia64_fpreg       fr13;
 262         union _ia64_fpreg       fr14;
 263         union _ia64_fpreg       fr15;
 264 };
 265
 266 #ifdef _KERNEL
 267 void    restore_callee_saved(const struct _callee_saved *);
 268 void    restore_callee_saved_fp(const struct _callee_saved_fp *);
 269 void    restore_high_fp(const struct _high_fp *);
 270 void    save_callee_saved(struct _callee_saved *);
 271 void    save_callee_saved_fp(struct _callee_saved_fp *);
 272 void    save_high_fp(struct _high_fp *);
 273 #endif
 274
 275 #endif  /* _MACHINE_REGSET_H_ */