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Some changes for portability to AIX and Darwin
Eliminated the (non-hybrid) direct threading stuff from arch/*/machine.h

    1: /* DEC Alpha
    2: 
    3:   Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
    4: 
    5:   This file is part of Gforth.
    6: 
    7:   Gforth is free software; you can redistribute it and/or
    8:   modify it under the terms of the GNU General Public License
    9:   as published by the Free Software Foundation; either version 2
   10:   of the License, or (at your option) any later version.
   11: 
   12:   This program is distributed in the hope that it will be useful,
   13:   but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15:   GNU General Public License for more details.
   16: 
   17:   You should have received a copy of the GNU General Public License
   18:   along with this program; if not, write to the Free Software
   19:   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: */
   21: 
   22: /* Be careful: long long on Alpha are 64 bit :-(( */
   23: 
   24: #ifndef THREADING_SCHEME
   25: #define THREADING_SCHEME 5
   26: #endif
   27: 
   28: #if !defined(USE_TOS) && !defined(USE_NO_TOS)
   29: #define USE_TOS
   30: #endif
   31: 
   32: #define FLUSH_ICACHE(addr,size)		asm("call_pal 0x86") /* imb (instruction-memory barrier) */
   33: 
   34: #include "../generic/machine.h"
   35: 
   36: #ifdef FORCE_REG
   37: /* $9-$14 are callee-saved, $1-$8 and $22-$25 are caller-saved */
   38: #define IPREG asm("$10")
   39: #define SPREG asm("$11")
   40: #define RPREG asm("$12")
   41: #define LPREG asm("$13")
   42: #define TOSREG asm("$14")
   43: /* #define CFAREG asm("$22") egcs-1.0.3 crashes with any caller-saved
   44:    register decl */
   45: #endif /* FORCE_REG */