arch/ppc64/xmon/setjmp.c

   1 /*
   2  * Copyright (C) 1996 Paul Mackerras.
   3  *
   4  *      This program is free software; you can redistribute it and/or
   5  *      modify it under the terms of the GNU General Public License
   6  *      as published by the Free Software Foundation; either version
   7  *      2 of the License, or (at your option) any later version.
   8  *
   9  * NB this file must be compiled with -O2.
  10  */
  11
  12 int
  13 xmon_setjmp(long *buf)  /* NOTE: assert(sizeof(buf) > 184) */
  14 {
  15         /* XXX should save fp regs as well */
  16         asm volatile (
  17         "mflr 0; std 0,0(%0)\n\
  18          std    1,8(%0)\n\
  19          std    2,16(%0)\n\
  20          mfcr 0; std 0,24(%0)\n\
  21          std    13,32(%0)\n\
  22          std    14,40(%0)\n\
  23          std    15,48(%0)\n\
  24          std    16,56(%0)\n\
  25          std    17,64(%0)\n\
  26          std    18,72(%0)\n\
  27          std    19,80(%0)\n\
  28          std    20,88(%0)\n\
  29          std    21,96(%0)\n\
  30          std    22,104(%0)\n\
  31          std    23,112(%0)\n\
  32          std    24,120(%0)\n\
  33          std    25,128(%0)\n\
  34          std    26,136(%0)\n\
  35          std    27,144(%0)\n\
  36          std    28,152(%0)\n\
  37          std    29,160(%0)\n\
  38          std    30,168(%0)\n\
  39          std    31,176(%0)\n\
  40          " : : "r" (buf));
  41     return 0;
  42 }
  43
  44 void
  45 xmon_longjmp(long *buf, int val)
  46 {
  47         if (val == 0)
  48                 val = 1;
  49         asm volatile (
  50         "ld     13,32(%0)\n\
  51          ld     14,40(%0)\n\
  52          ld     15,48(%0)\n\
  53          ld     16,56(%0)\n\
  54          ld     17,64(%0)\n\
  55          ld     18,72(%0)\n\
  56          ld     19,80(%0)\n\
  57          ld     20,88(%0)\n\
  58          ld     21,96(%0)\n\
  59          ld     22,104(%0)\n\
  60          ld     23,112(%0)\n\
  61          ld     24,120(%0)\n\
  62          ld     25,128(%0)\n\
  63          ld     26,136(%0)\n\
  64          ld     27,144(%0)\n\
  65          ld     28,152(%0)\n\
  66          ld     29,160(%0)\n\
  67          ld     30,168(%0)\n\
  68          ld     31,176(%0)\n\
  69          ld     0,24(%0)\n\
  70          mtcrf  0x38,0\n\
  71          ld     0,0(%0)\n\
  72          ld     1,8(%0)\n\
  73          ld     2,16(%0)\n\
  74          mtlr   0\n\
  75          mr     3,%1\n\
  76          " : : "r" (buf), "r" (val));
  77 }