source: trunk/hal/generic/hal_syscall.h @ 480

Last change on this file since 480 was 480, checked in by viala@…, 3 years ago

[hal/generic] Add void type to function prototypes with no parameter

File size: 2.0 KB
Line 
1/*
2 * hal_kernel_syscall.h - Architecture specific kernel_side syscall handler API definition.
3 *
4 * Author      Alain Greiner (2016,2017)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#ifndef _HAL_KERNEL_SYSCALL_H_
25#define _HAL_KERNEL_SYSCALL_H_
26
27#include <hal_kernel_types.h>
28
29///////////////////////////////////////////////////////////////////////////////////////
30//     Kernel-side syscall handler API
31//
32// This hal_do_syscall() function extract from the calling thread uzone array
33// the syscall index, and the four syscall arguments.
34// Then it calls the generic do_syscall() function,
35// that calls itself the relevant kernel function, depending on the syscall index.
36//
37// When the generic do_syscall function returns, it saves the return value
38// in the UZ_VO slot of the returning thread uzone, and update the UZ_EPC slot.
39//
40// WARNING: The returning thread can be different from the entering thread
41// in the case of a sys_fork() system call.
42///////////////////////////////////////////////////////////////////////////////////////
43
44
45/**************************************************************************************
46 * This function implements the syscall handler for the TSAR architecture.
47 *************************************************************************************/
48void hal_do_syscall( void );
49
50
51#endif   // _HAL_KERNEL_SYSCALL_H_
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