| 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 | |
| 26 | typedef struct { |
| 27 | unsigned short rmin, rmax; |
| 28 | /* a single description can be used for a range of registers with |
| 29 | the same properties *accessed via CPDT instructions* |
| 30 | */ |
| 31 | unsigned char nbytes; /* size of register */ |
| 32 | unsigned char access; /* see above (Access_xxx) */ |
| 33 | union { |
| 34 | struct { /* CPDT instructions do not allow the coprocessor much freedom: |
| 35 | only bit 22 ('N') and 12-15 ('CRd') are free for the |
| 36 | coprocessor to use as it sees fit. |
| 37 | */ |
| 38 | unsigned char nbit; |
| 39 | unsigned char rdbits; |
| 40 | } cpdt; |
| 41 | struct { /* CPRT instructions have much more latitude. The bits fixed |
| 42 | by the ARM are 24..31 (condition mask & opcode) |
| 43 | 20 (direction) |
| 44 | 8..15 (cpnum, arm register) |
| 45 | 4 (CPRT not CPDO) |
| 46 | leaving 14 bits free to the coprocessor (fortunately |
| 47 | falling within two bytes). |
| 48 | */ |
| 49 | unsigned char read_b0, read_b1, |
| 50 | write_b0, write_b1; |
| 51 | } cprt; |
| 52 | } accessinst; |
| 53 | } Dbg_CoProRegDesc; |
| 54 | |
| 55 | struct Dbg_CoProDesc { |
| 56 | int entries; |
| 57 | Dbg_CoProRegDesc regdesc[1/* really nentries */]; |
| 58 | }; |
| 59 | |
| 60 | #define Dbg_CoProDesc_Size(n) (sizeof(struct Dbg_CoProDesc) + (n-1)*sizeof(Dbg_CoProRegDesc)) |
| 61 | |
| 62 | #endif |