source: trunk/hal/x86_64/core/hal_irqmask.c @ 99

Last change on this file since 99 was 99, checked in by max@…, 5 years ago

add the irq functions; we will forbid nested critical sections, so
the argument will disappear soon

File size: 1.3 KB
RevLine 
[25]1/*
[99]2 * hal_irqmask.c - implementation of Generic IRQ Masking API for x86
[25]3 *
[99]4 * Copyright (c) 2017 Maxime Villard
[25]5 *
[99]6 * This file is part of ALMOS-MKH.
7 *
8 * ALMOS-MKH is free software; you can redistribute it and/or modify it
[25]9 * under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2.0 of the License.
11 *
[99]12 * ALMOS-MKH is distributed in the hope that it will be useful, but
[25]13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with ALMOS-MKH.; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <hal_types.h>
[48]23#include <hal_internal.h>
[25]24
[99]25static int interrupts_enabled __in_kdata = 0;
26
27inline void hal_disable_irq(uint32_t *old)
[25]28{
[99]29        if (!interrupts_enabled) {
30                x86_panic("nested critical sections forbidden");
31        }
32        interrupts_enabled = 0;
33        cli();
[25]34}
35
[99]36inline void hal_enable_irq(uint32_t *old)
[25]37{
[99]38        if (interrupts_enabled) {
39                x86_panic("nested critical sections forbidden");
40        }
41        interrupts_enabled = 1;
42        sti();
[25]43}
44
[99]45inline void hal_restore_irq(uint32_t old)
[25]46{
[48]47        x86_panic((char *)__func__);
[25]48}
49
Note: See TracBrowser for help on using the repository browser.