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/*

 * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.

 *

 * This software may be freely used, copied, modified, and distributed

 * provided that the above copyright notice is preserved in all copies of the

 * software.

 */

/*

 * ARM symbolic debugger toolbox: dbg_cp.h

 */

/*

 * RCS $Revision: 1.1.1.1 $

 * Checkin $Date: 2002-01-16 10:24:33 $

 */

#ifndef Dbg_CP__h

#define Dbg_CP__h

#define Dbg_Access_Readable  1

#define Dbg_Access_Writable  2

#define Dbg_Access_CPDT      4 /* else CPRT */

typedef struct {

    unsigned short rmin, rmax;

    /* a single description can be used for a range of registers with

       the same properties *accessed via CPDT instructions*

     */

    unsigned char nbytes;   /* size of register */

    unsigned char access;   /* see above (Access_xxx) */

    union {

       struct { /* CPDT instructions do not allow the coprocessor much freedom:

                   only bit 22 ('N') and 12-15 ('CRd') are free for the

                   coprocessor to use as it sees fit.

                 */

                unsigned char nbit;

                unsigned char rdbits;

              } cpdt;

       struct { /* CPRT instructions have much more latitude.  The bits fixed

                   by the ARM are  24..31 (condition mask & opcode)

                                   20 (direction)

                                   8..15 (cpnum, arm register)

                                   4 (CPRT not CPDO)

                   leaving 14 bits free to the coprocessor (fortunately

                   falling within two bytes).

                 */

                unsigned char read_b0, read_b1,

                              write_b0, write_b1;

              } cprt;

    } accessinst;

} Dbg_CoProRegDesc;

struct Dbg_CoProDesc {

    int entries;

    Dbg_CoProRegDesc regdesc[1/* really nentries */];

};

#define Dbg_CoProDesc_Size(n) (sizeof(struct Dbg_CoProDesc) + ((n)-1)*sizeof(Dbg_CoProRegDesc))

#endif