Subversion Repositories tendra.SVN

/*

    		 Crown Copyright (c) 1997

    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.

*/

/*

$Log: regmacs.h,v $

 * Revision 1.1.1.1  1998/01/17  15:56:03  release

 * First version to be checked into rolling release.

 *

 * Revision 1.3  1996/01/10  17:18:57  wfs

 * Corrected definition of "IS_TREG" macro + cosmetic changes to needscan.c

 *

 * Revision 1.2  1995/12/18  13:12:32  wfs

 * Put hppatrans uder cvs control. Major Changes made since last release

 * include:

 * (i) PIC code generation.

 * (ii) Profiling.

 * (iii) Dynamic Initialization.

 * (iv) Debugging of Exception Handling and Diagnostics.

 *

 * Revision 5.0  1995/08/25  14:00:27  wfs

 * Preperation for August 95 Glue release

 *

 * Revision 4.0  1995/08/25  13:34:00  wfs

 * ..

 *

 * Revision 4.0  1995/08/25  13:34:00  wfs

 * ..

 *

 * Revision 3.4  1995/08/25  11:05:02  wfs

 * Major revision of internal register synonym's

 *

 * Revision 3.4  1995/08/25  11:05:02  wfs

 * Major revision of internal register synonym's

 *

 * Revision 3.1  95/04/10  16:28:07  16:28:07  wfs (William Simmonds)

 * Apr95 tape version.

 * 

 * Revision 3.0  95/03/30  11:18:56  11:18:56  wfs (William Simmonds)

 * Mar95 tape version with CRCR95_178 bug fix.

 * 

 * Revision 2.0  95/03/15  15:28:46  15:28:46  wfs (William Simmonds)

 * spec 3.1 changes implemented, tests outstanding.

 * 

 * Revision 1.1  95/01/11  13:43:36  13:43:36  wfs (William Simmonds)

 * Initial revision

 * 

*/

#ifndef REGMACS_INCLUDED

#define REGMACS_INCLUDED

                /****************************/

               /*   HP_PA FIXED REGISTERS  */

              /****************************/

#define GR0             0       /* Hard wired to 0           */

#define GR1             1      /* First temporary register  */

#define GR2             2     

#define GR3		16   /*  C  */   

#define GR4		17   /*  a  */

#define GR5		18   /*  l  */

#define GR6		19   /*  l  */

#define GR7		20   /*  e  */

#define GR8		21   /*  e  */

#define GR9		22   /*     */

#define GR10		23   /*     */

#define GR11		24   /*     */

#define GR12		25   /*     */

#define GR13		26   /*     */

#define GR14		27   /*  S  */

#define GR15		28   /*  a  */

#define GR16		29   /*  v  */

#define GR17		30   /*  e  */

#define GR18		31   /*  s  */

#define GR19            3

#define GR20            4

#define GR21            5

#define GR22            6

#define GR23            10            

#define GR24            9

#define GR25            8

#define GR26            7

#define GR27            11

#define GR28            12

#define GR29            13

#define GR30            14

#define GR31            15

                /****************************/

               /*   HP_PA SPACE REGISTERS  */

              /****************************/

#define SR0             0

#define SR1             1

#define SR2             2

#define SR3             3

#define SR4             4

#define SR5             5

#define SR6             6

#define SR7             7

                /**************/

               /*  Synonyms  */

              /**************/

#define SP	   GR30               /*  Stack Pointer              */

#define DP         GR27              /*  Global Data Pointer        */

#define RP         GR2              /*  Return Pointer             */

#define T4         GR19            /*  Fourth Temporary Register  */

#define T3         GR20           /*  Third Temporary Register   */

#define T2         GR21          /*  Second Temporary Register  */

#define T1         GR22         /*  First Temporary Register   */

#define MRP        GR31        /*  Millicode Return Pointer   */

#define ARG3       GR23       /*  Argument Word 3            */

#define ARG2       GR24      /*  Argument Word 2            */

#define ARG1       GR25     /*  Argument Word 1            */

#define ARG0       GR26    /*  Argument Word 0            */

#define RET0       GR28   /*  Return value               */

#define RET1       GR29  /*  Return Value               */

#define FP         GR3  /* Frame Pointer. GR3 is reserved for use as a

                           frame pointer iff Has_fp==1 (cf. frames.c).  */

int EP;  /*  EP is a register which holds the frames original stack pointer.

             EP=GR3, if has_vsp==1, or SP otherwise (c.f. frames.c).  */

/* Range of all fixed registers */

#define R_FIRST		0

#define R_LAST		31

/*

    HP_PA FLOATING POINT REGISTERS

    Two representations are used in hppatrans, 0...15 to represent 16

    register-pairs for doubles at the higher (e.g. fregalloc) levels, and

    0...31 at the lower (assembler) levels.  This is somewhat confusing,

    conversion is one way using a 'frg << 1'-like expression, often in

    the parameter position of a ???_ins () function call.

*/

/* Floating point registers */

#define R_FR0		0	/* floating point zero */

#define R_FR4		4	/* procedure float result register */

/* Range of all floating point registers */

#define R_FLT_FIRST	0

#define R_FLT_LAST	31

/*

    PSEUDO-REGISTER CODES

*/

#define R_NO_REG	100	/* code for no register allocated */

#define R_USE_RES_REG	101	/* code to indicate result register */

#define R_DEFER_FR4	16	/* code to indicate %fr4 to be used */

/*

    REGISTER MASKS

    A register mask, with one bit per register, is used in 'space' etc.

    A set bit indicates that the register is not available for allocation.

*/

#define	RMASK( r )	( ( ( long ) 1 ) << ( r ) )

/*

    REGISTER SETS

    IS_FIXREG tests for fixed registers, IS_SREG for s-registers (those

    preserved over procedure calls), and IS_TREG for t-registers (those

    not so preserved).  PARAM_TREGS gives all the procedure parameter

    registers (ARG0-ARG3)

*/

#define IS_FIXREG(r)  ( (r)>=R_FIRST && (r)<=R_LAST)

#define IS_SREG(r)    ( (r)>=GR3 && (r)<=GR18 )

#define IS_TREG(r)    ( ( (r)>GR0 && (r)<=GR2 ) || ( (r)>=GR19 && (r)<= GR31 ) )

#define PARAM_TREGS   RMASK(ARG0)|RMASK(ARG1)|RMASK(ARG2)|RMASK(ARG3)

#define PROC_TREGS    -65536 /*  i.e. 11111111111111110000000000000000  */

#define IS_FLT_SREG( r )	0

/*#define IS_FLT_TREG( r )	( ( r ) >= 0 && ( r ) <= 15 )  */

#define IS_FLT_TREG( r )	( ((r)>7 && (r)<12) || ((r)>21 && (r)<32 ) )

#define PARAM_FLT_TREGS		0x0000

#define PROC_FLT_TREGS		0x0000

#define MAXFLOAT_TREGS		14

#endif /* REGMACS_INCLUDED */