1 /* 2 * SHcompact irqflags support 3 * 4 * Copyright (C) 2006 - 2009 Paul Mundt 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 */ 10 #include <linux/irqflags.h> 11 #include <linux/module.h> 12 13 void notrace arch_local_irq_restore(unsigned long flags) 14 { 15 unsigned long __dummy0, __dummy1; 16 17 if (flags == ARCH_IRQ_DISABLED) { 18 __asm__ __volatile__ ( 19 "stc sr, %0\n\t" 20 "or #0xf0, %0\n\t" 21 "ldc %0, sr\n\t" 22 : "=&z" (__dummy0) 23 : /* no inputs */ 24 : "memory" 25 ); 26 } else { 27 __asm__ __volatile__ ( 28 "stc sr, %0\n\t" 29 "and %1, %0\n\t" 30 #ifdef CONFIG_CPU_HAS_SR_RB 31 "stc r6_bank, %1\n\t" 32 "or %1, %0\n\t" 33 #endif 34 "ldc %0, sr\n\t" 35 : "=&r" (__dummy0), "=r" (__dummy1) 36 : "1" (~ARCH_IRQ_DISABLED) 37 : "memory" 38 ); 39 } 40 } 41 EXPORT_SYMBOL(arch_local_irq_restore); 42 43 unsigned long notrace arch_local_save_flags(void) 44 { 45 unsigned long flags; 46 47 __asm__ __volatile__ ( 48 "stc sr, %0\n\t" 49 "and #0xf0, %0\n\t" 50 : "=&z" (flags) 51 : /* no inputs */ 52 : "memory" 53 ); 54 55 return flags; 56 } 57 EXPORT_SYMBOL(arch_local_save_flags); 58