os_emul.h revision 1.1
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 24typedef struct _os_emul os_emul; 25 26INLINE_OS_EMUL\ 27(os_emul *) os_emul_create 28(const char *file_name, 29 device *root); 30 31INLINE_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 40INLINE_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 53INLINE_OS_EMUL\ 54(int) os_emul_instruction_call 55(cpu *processor, 56 unsigned_word cia, 57 unsigned_word ra); 58 59#endif 60