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

Last change on this file was 457, checked in by alain, 4 years ago

This version modifies the exec syscall and fixes a large number of small bugs.
The version number has been updated (0.1)

File size: 1.4 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
[234]18 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
[25]19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
[457]22#include <hal_kernel_types.h>
[48]23#include <hal_internal.h>
[240]24#include <hal_segmentation.h>
[25]25
[285]26inline void hal_disable_irq(reg_t *old)
[240]27{
[336]28        tls_t *tls = curtls();
[99]29
[370]30        if (old)
31                *old = tls->tls_intr;
[240]32        tls->tls_intr = INTRS_DISABLED;
[122]33
[99]34        cli();
[25]35}
36
[285]37inline void hal_enable_irq(reg_t *old)
[25]38{
[336]39        tls_t *tls = curtls();
[240]40
[370]41        if (old)
42                *old = tls->tls_intr;
[240]43        tls->tls_intr = INTRS_ENABLED;
44
[99]45        sti();
[25]46}
47
[285]48inline void hal_restore_irq(reg_t old)
[25]49{
[336]50        tls_t *tls = curtls();
[122]51
[240]52        tls->tls_intr = old;
53
54        if (old == INTRS_ENABLED)
[122]55                sti();
[240]56        else if(old == INTRS_DISABLED)
[122]57                cli();
[118]58        else
[122]59                x86_panic("hal_restore_irq: not reachable");
[25]60}
61
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