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 2 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, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 19 */ 20 21 22#ifndef _OS_EMUL_H_ 23#define _OS_EMUL_H_ 24 25typedef struct _os_emul os_emul; 26 27INLINE_OS_EMUL\ 28(os_emul *) os_emul_create 29(const char *file_name, 30 device *root); 31 32INLINE_OS_EMUL\ 33(void) os_emul_init 34(os_emul *emulation, 35 int nr_cpus); 36 37 38/* System-call emulation - for user code. Instead of trapping system 39 calls to kernel mode, the simulator emulates the kernels behavour */ 40 41INLINE_OS_EMUL\ 42(void) os_emul_system_call 43(cpu *processor, 44 unsigned_word cia); 45 46 47/* Instruction emulation - for kernel code. Extra (normally illegal) 48 instructions are added to the instruction table that when executed 49 call this emulation function. The instruction call emulator should 50 verify the address that the instruction appears before emulating 51 the required behavour. If the verification fails, a zero value 52 should be returned (indicating instruction illegal). */ 53 54INLINE_OS_EMUL\ 55(int) os_emul_instruction_call 56(cpu *processor, 57 unsigned_word cia, 58 unsigned_word ra); 59 60#endif 61