| 1 | /* This file is part of the program psim. |
| 2 | |
| 3 | Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | */ |
| 19 | |
| 20 | |
| 21 | #ifndef _OS_EMUL_H_ |
| 22 | #define _OS_EMUL_H_ |
| 23 | |
| 24 | typedef struct _os_emul os_emul; |
| 25 | |
| 26 | INLINE_OS_EMUL\ |
| 27 | (os_emul *) os_emul_create |
| 28 | (const char *file_name, |
| 29 | device *root); |
| 30 | |
| 31 | INLINE_OS_EMUL\ |
| 32 | (void) os_emul_init |
| 33 | (os_emul *emulation, |
| 34 | int nr_cpus); |
| 35 | |
| 36 | |
| 37 | /* System-call emulation - for user code. Instead of trapping system |
| 38 | calls to kernel mode, the simulator emulates the kernels behavour */ |
| 39 | |
| 40 | INLINE_OS_EMUL\ |
| 41 | (void) os_emul_system_call |
| 42 | (cpu *processor, |
| 43 | unsigned_word cia); |
| 44 | |
| 45 | |
| 46 | /* Instruction emulation - for kernel code. Extra (normally illegal) |
| 47 | instructions are added to the instruction table that when executed |
| 48 | call this emulation function. The instruction call emulator should |
| 49 | verify the address that the instruction appears before emulating |
| 50 | the required behavour. If the verification fails, a zero value |
| 51 | should be returned (indicating instruction illegal). */ |
| 52 | |
| 53 | INLINE_OS_EMUL\ |
| 54 | (int) os_emul_instruction_call |
| 55 | (cpu *processor, |
| 56 | unsigned_word cia, |
| 57 | unsigned_word ra); |
| 58 | |
| 59 | #endif |