| GuanXuetao | 752bcb4 | 2011-01-15 18:19:35 +0800 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/unicore32/include/asm/irqflags.h |
| 3 | * |
| 4 | * Code specific to PKUnity SoC and UniCore ISA |
| 5 | * |
| 6 | * Copyright (C) 2001-2010 GUAN Xue-tao |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | #ifndef __UNICORE_IRQFLAGS_H__ |
| 13 | #define __UNICORE_IRQFLAGS_H__ |
| 14 | |
| 15 | #ifdef __KERNEL__ |
| 16 | |
| 17 | #include <asm/ptrace.h> |
| 18 | |
| 19 | #define ARCH_IRQ_DISABLED (PRIV_MODE | PSR_I_BIT) |
| 20 | #define ARCH_IRQ_ENABLED (PRIV_MODE) |
| 21 | |
| 22 | /* |
| 23 | * Save the current interrupt enable state. |
| 24 | */ |
| 25 | static inline unsigned long arch_local_save_flags(void) |
| 26 | { |
| 27 | unsigned long temp; |
| 28 | |
| 29 | asm volatile("mov %0, asr" : "=r" (temp) : : "memory", "cc"); |
| 30 | |
| 31 | return temp & PSR_c; |
| 32 | } |
| 33 | |
| 34 | /* |
| 35 | * restore saved IRQ state |
| 36 | */ |
| 37 | static inline void arch_local_irq_restore(unsigned long flags) |
| 38 | { |
| 39 | unsigned long temp; |
| 40 | |
| 41 | asm volatile( |
| 42 | "mov %0, asr\n" |
| 43 | "mov.a asr, %1\n" |
| 44 | "mov.f asr, %0" |
| 45 | : "=&r" (temp) |
| 46 | : "r" (flags) |
| 47 | : "memory", "cc"); |
| 48 | } |
| 49 | |
| 50 | #include <asm-generic/irqflags.h> |
| 51 | |
| 52 | #endif |
| 53 | #endif |