| wdenk | ef3386f | 2004-10-10 21:27:30 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2004, Psyent Corporation <www.psyent.com> |
| 3 | * Scott McNutt <smcnutt@psyent.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | #ifndef __ASM_NIOS2_SYSTEM_H_ |
| 24 | #define __ASM_NIOS2_SYSTEM_H_ |
| 25 | |
| Thomas Chou | 84b8f17 | 2010-03-20 07:05:45 +0800 | [diff] [blame] | 26 | #define local_irq_enable() __asm__ __volatile__ ( \ |
| 27 | "rdctl r8, status\n" \ |
| 28 | "ori r8, r8, 1\n" \ |
| 29 | "wrctl status, r8\n" \ |
| 30 | : : : "r8") |
| 31 | |
| 32 | #define local_irq_disable() __asm__ __volatile__ ( \ |
| 33 | "rdctl r8, status\n" \ |
| 34 | "andi r8, r8, 0xfffe\n" \ |
| 35 | "wrctl status, r8\n" \ |
| 36 | : : : "r8") |
| 37 | |
| 38 | #define local_save_flags(x) __asm__ __volatile__ ( \ |
| 39 | "rdctl r8, status\n" \ |
| 40 | "mov %0, r8\n" \ |
| 41 | : "=r" (x) : : "r8", "memory") |
| 42 | |
| 43 | #define local_irq_restore(x) __asm__ __volatile__ ( \ |
| 44 | "mov r8, %0\n" \ |
| 45 | "wrctl status, r8\n" \ |
| 46 | : : "r" (x) : "r8", "memory") |
| 47 | |
| 48 | /* For spinlocks etc */ |
| 49 | #define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } \ |
| 50 | while (0) |
| 51 | |
| 52 | #define irqs_disabled() \ |
| 53 | ({ \ |
| 54 | unsigned long flags; \ |
| 55 | local_save_flags(flags); \ |
| 56 | ((flags & NIOS2_STATUS_PIE_MSK) == 0x0); \ |
| 57 | }) |
| 58 | |
| wdenk | ef3386f | 2004-10-10 21:27:30 +0000 | [diff] [blame] | 59 | #endif /* __ASM_NIOS2_SYSTEM_H */ |