| /* |
| * (C) Copyright 2007 Michal Simek |
| * |
| * Michal SIMEK <monstr@monstr.eu> |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| .text |
| .globl microblaze_disable_interrupts |
| .ent microblaze_disable_interrupts |
| .align 2 |
| microblaze_disable_interrupts: |
| #Make space on stack for a temporary |
| addi r1, r1, -4 |
| #Save register r12 |
| swi r12, r1, 0 |
| #Read the MSR register |
| mfs r12, rmsr |
| #Clear the interrupt enable bit |
| andi r12, r12, ~2 |
| #Save the MSR register |
| mts rmsr, r12 |
| #Load register r12 |
| lwi r12, r1, 0 |
| #Return |
| rtsd r15, 8 |
| #Update stack in the delay slot |
| addi r1, r1, 4 |
| .end microblaze_disable_interrupts |