sim/m32r/mloopx.in

   1 # Simulator main loop for m32rx. -*- C -*-
   2 # Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   3 #
   4 # This file is part of the GNU Simulators.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2, or (at your option)
   9 # any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along
  17 # with this program; if not, write to the Free Software Foundation, Inc.,
  18 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19
  20 # Syntax:
  21 # /bin/sh mainloop.in init|support|{full,fast}-{extract,exec}-{scache,noscache}
  22
  23 # ??? After a few more ports are done, revisit.
  24 # Will eventually need to machine generate a lot of this.
  25
  26 case "x$1" in
  27
  28 xsupport)
  29
  30 cat <<EOF
  31
  32 EOF
  33
  34 ;;
  35
  36 xinit)
  37
  38 cat <<EOF
  39   USI insn,insn1,insn2;
  40   DECODE *decode,*d1,*d2;
  41   int icount,icount2;
  42   ARGBUF abufs[MAX_PARALLEL_INSNS];
  43   SEM_ARG sem_arg;
  44
  45 EOF
  46
  47 ;;
  48
  49 xfull-extract-* | xfast-extract-*)
  50
  51 cat <<EOF
  52 {
  53   PCADDR pc = CPU (h_pc);
  54
  55   if ((pc & 3) != 0)
  56     {
  57       insn1 = GETIMEMUHI (current_cpu, pc);
  58       insn1 &= 0x7fff;
  59       d1 = m32rx_decode (current_cpu, pc, insn1);
  60       icount = 1;
  61     }
  62   else
  63     {
  64       insn1 = GETIMEMUSI (current_cpu, pc);
  65       if ((SI) insn1 < 0)
  66         {
  67           d1 = m32rx_decode (current_cpu, pc, insn1 >> 16);
  68           icount = 1;
  69         }
  70       else
  71         {
  72           if (insn & 0x8000)
  73             {
  74               insn2 = insn1 & 0x7fff;
  75               insn1 = insn1 >> 16;
  76               d1 = m32rx_decode (current_cpu, pc, insn1);
  77               d2 = m32rx_decode (current_cpu, pc, insn2);
  78               icount = 2;
  79             }
  80           else
  81             {
  82               insn1 = insn1 >> 16;
  83               d1 = m32rx_decode (current_cpu, pc, insn1);
  84               icount = 1;
  85             }
  86         }
  87     }
  88
  89   icount2 = icount;
  90   insn = insn1;
  91   decode = d1;
  92   do
  93     {
  94 #define DEFINE_SWITCH
  95 #include "readx.c"
  96
  97       insn = insn2;
  98       decode = d2;
  99     }
 100   while (--icount2 > 0);
 101 }
 102 EOF
 103
 104 ;;
 105
 106 xfull-exec-* | xfast-exec-*)
 107
 108 cat <<EOF
 109 {
 110   decode = d1;
 111   do
 112     {
 113       PCADDR new_pc;
 114       TRACE_INSN_INIT (current_cpu);
 115       TRACE_INSN (current_cpu, sc->argbuf.opcode, (const struct argbuf *) &sc->argbuf, sc->argbuf.addr);
 116       new_pc = (*decode->semantic) (current_cpu, &sc->argbuf);
 117       TRACE_INSN_FINI (current_cpu);
 118       PROFILE_COUNT_INSN (current_cpu, pc, CGEN_INSN_INDEX (sc->argbuf.opcode));
 119       CPU (h_pc) = new_pc;
 120       decode = d2;
 121     }
 122   while (--icount > 0);
 123 }
 124 EOF
 125
 126 ;;
 127
 128 *)
 129   echo "Invalid argument to mainloop.in: $1" >&2
 130   exit 1
 131   ;;
 132
 133 esac