1/* dbg_cp.h -- ARMulator debug interface: ARM6 Instruction Emulator. 2 Copyright (C) 1994 Advanced RISC Machines Ltd. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 17 18#ifndef Dbg_CP__h 19 20#define Dbg_CP__h 21 22#define Dbg_Access_Readable 1 23#define Dbg_Access_Writable 2 24#define Dbg_Access_CPDT 4 /* else CPRT */ 25 26typedef struct 27{ 28 unsigned short rmin, rmax; 29 /* a single description can be used for a range of registers with 30 the same properties *accessed via CPDT instructions* 31 */ 32 unsigned char nbytes; /* size of register */ 33 unsigned char access; /* see above (Access_xxx) */ 34 union 35 { 36 struct 37 { 38 /* CPDT instructions do not allow the coprocessor much freedom: 39 only bit 22 ('N') and 12-15 ('CRd') are free for the 40 coprocessor to use as it sees fit. */ 41 unsigned char nbit; 42 unsigned char rdbits; 43 } 44 cpdt; 45 struct 46 { 47 /* CPRT instructions have much more latitude. The bits fixed 48 by the ARM are 24..31 (condition mask & opcode) 49 20 (direction) 50 8..15 (cpnum, arm register) 51 4 (CPRT not CPDO) 52 leaving 14 bits free to the coprocessor (fortunately 53 falling within two bytes). */ 54 unsigned char read_b0, read_b1, write_b0, write_b1; 55 } 56 cprt; 57 } 58 accessinst; 59} 60Dbg_CoProRegDesc; 61 62struct Dbg_CoProDesc 63{ 64 int entries; 65 Dbg_CoProRegDesc regdesc[1 /* really nentries */ ]; 66}; 67 68#define Dbg_CoProDesc_Size(n) (sizeof(struct Dbg_CoProDesc) + (n-1)*sizeof(Dbg_CoProRegDesc)) 69 70#endif 71