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/*
* Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of The TenDRA Project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
/*
Crown Copyright (c) 1996
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
/*
VERSION INFORMATION
===================
--------------------------------------------------------------------------
$Header: /u/g/release/CVSROOT/Source/src/installers/680x0/common/where.h,v 1.1.1.1 1998/01/17 15:55:50 release Exp $
--------------------------------------------------------------------------
$Log: where.h,v $
* Revision 1.1.1.1 1998/01/17 15:55:50 release
* First version to be checked into rolling release.
*
Revision 1.2 1997/10/29 10:22:33 ma
Replaced use_alloca with has_alloca.
Revision 1.1.1.1 1997/10/13 12:43:01 ma
First version.
Revision 1.3 1997/10/13 08:50:22 ma
Made all pl_tests for general proc & exception handling pass.
Revision 1.2 1997/09/25 06:45:43 ma
All general_proc tests passed
Revision 1.1.1.1 1997/03/14 07:50:21 ma
Imported from DRA
* Revision 1.1.1.1 1996/09/20 10:57:00 john
*
* Revision 1.2 1996/07/05 14:30:26 john
* Changes for spec 3.1
*
* Revision 1.1.1.1 1996/03/26 15:45:19 john
*
* Revision 1.2 94/02/21 16:07:24 16:07:24 ra (Robert Andrews)
* Declare functions with no arguments with ( void ). Make 0 into a long
* in the definition of zw.
*
* Revision 1.1 93/02/22 17:17:07 17:17:07 ra (Robert Andrews)
* Initial revision
*
--------------------------------------------------------------------------
*/
#ifndef WHERE_INCLUDED
#define WHERE_INCLUDED
/*
STRUCTURE REPRESENTING ALLOCATED EXPRESSIONS
A where consists of an expression, wh_exp, and an offset wh_off.
The wh_is field gives information on where the expression is
stored (see below). The wh_regs field gives the register mask
of all the registers involved in storing the expression.
*/
typedef struct {
exp wh_exp;
long wh_off;
int wh_is;
bitpattern wh_regs;
} where;
/*
POSSIBLE VALUES FOR THE wh_is FIELD OF A WHERE
*/
#define Dreg 0 /* In a D-register */
#define Areg 1 /* In an A-register */
#define Freg 2 /* In an F-register */
#define Value 3 /* Constant value */
#define Parameter 4 /* On the stack (procedure argument) */
#define Variable 5 /* On the stack (allocated variable) */
#define RegInd 6 /* Indirect relative to a register */
#define EffAddr 7 /* In a valid 68020 effective address */
#define External 8 /* External data */
#define RegPair 9 /* In a register pair */
#define Other 10 /* All other cases */
/*
PROCEDURES INVOLVING WHERE'S
*/
extern void init_wheres(void);
extern int shtype(shape);
extern where mw(exp, long);
extern where mnw(long);
extern bool eq_where_a(where, where, int);
extern where where_operand(mach_op*);
/*
MACROS INVOLVING WHERE'S
*/
#define whereis(X) ((X).wh_is)
#define interfere(X, Y) ((X).wh_regs & (Y).wh_regs)
#define last_use(X) ((X).wh_regs & reuseables)
#define nw(X) (no((X).wh_exp) + (X).wh_off)
#define zw(X) mw(X, L0)
#define eq_where(X, Y) eq_where_a(X, Y, 1)
/*
CONSTANT EXP'S AND WHERE'S
*/
extern exp zeroe;
extern where zero, fzero;
extern where A6_4, A0_p, A1_p, SP_p, A6_4_p, D0_D1;
extern where RW[];
extern where dummy_double_dest ; /* used to force floating-point overflow */
extern where firstlocal ; /* represents first local on the stack */
/*
DEFINITION OF REGISTER WHERE'S
*/
#define D0 (RW[REG_D0])
#define D1 (RW[REG_D1])
#define D2 (RW[REG_D2])
#define D3 (RW[REG_D3])
#define D4 (RW[REG_D4])
#define D5 (RW[REG_D5])
#define D6 (RW[REG_D6])
#define D7 (RW[REG_D7])
#define A0 (RW[REG_A0])
#define A1 (RW[REG_A1])
#define A2 (RW[REG_A2])
#define A3 (RW[REG_A3])
#define A4 (RW[REG_A4])
#define A5 (RW[REG_A5])
#define AP (RW[REG_AP])
#define SP (RW[REG_SP])
#define FP0 (RW[REG_FP0])
#define FP1 (RW[REG_FP1])
#define FP2 (RW[REG_FP2])
#define FP3 (RW[REG_FP3])
#define FP4 (RW[REG_FP4])
#define FP5 (RW[REG_FP5])
#define FP6 (RW[REG_FP6])
#define FP7 (RW[REG_FP7])
#define register(X) (RW[(X)])
#endif