source: trunk/hal/x86_64/core/hal_irqmask.c @ 370

Last change on this file since 370 was 370, checked in by max@…, 4 years ago

Old can be NULL.

File size: 1.4 KB
Line 
1/*
2 * hal_irqmask.c - implementation of Generic IRQ Masking API for x86
3 *
4 * Copyright (c) 2017 Maxime Villard
5 *
6 * This file is part of ALMOS-MKH.
7 *
8 * ALMOS-MKH is free software; you can redistribute it and/or modify it
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 *
12 * ALMOS-MKH is distributed in the hope that it will be useful, but
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>
23#include <hal_internal.h>
24#include <hal_segmentation.h>
25
26inline void hal_disable_irq(reg_t *old)
27{
28        tls_t *tls = curtls();
29
30        if (old)
31                *old = tls->tls_intr;
32        tls->tls_intr = INTRS_DISABLED;
33
34        cli();
35}
36
37inline void hal_enable_irq(reg_t *old)
38{
39        tls_t *tls = curtls();
40
41        if (old)
42                *old = tls->tls_intr;
43        tls->tls_intr = INTRS_ENABLED;
44
45        sti();
46}
47
48inline void hal_restore_irq(reg_t old)
49{
50        tls_t *tls = curtls();
51
52        tls->tls_intr = old;
53
54        if (old == INTRS_ENABLED)
55                sti();
56        else if(old == INTRS_DISABLED)
57                cli();
58        else
59                x86_panic("hal_restore_irq: not reachable");
60}
61
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