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Diffstat (limited to 'include/asm-microblaze/system.h')
| -rw-r--r-- | include/asm-microblaze/system.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/include/asm-microblaze/system.h b/include/asm-microblaze/system.h deleted file mode 100644 index 0297a11..0000000 --- a/include/asm-microblaze/system.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - * include/asm-microblaze/system.h -- Low-level interrupt/thread ops - * - * Copyright (C) 2003 John Williams (jwilliams@itee.uq.edu.au) - * based upon microblaze version - * Copyright (C) 2001 NEC Corporation - * Copyright (C) 2001 Miles Bader <miles@gnu.org> - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of this - * archive for more details. - * - * Written by Miles Bader <miles@gnu.org> - * Microblaze port by John Williams - * Microblaze port by John Williams - */ - -#ifndef __MICROBLAZE_SYSTEM_H__ -#define __MICROBLAZE_SYSTEM_H__ - -#if 0 -#include <linux/linkage.h> -#endif -#include <asm/ptrace.h> - -#define prepare_to_switch() do { } while (0) - -/* - * switch_to(n) should switch tasks to task ptr, first checking that - * ptr isn't the current task, in which case it does nothing. - */ -struct thread_struct; -extern void *switch_thread (struct thread_struct *last, - struct thread_struct *next); -#define switch_to(prev,next,last) do { \ - if (prev != next) { \ - (last) = switch_thread (&prev->thread, &next->thread); \ - } \ -} while (0) - - -/* Enable/disable interrupts. */ -#define __sti() \ -{ \ - register unsigned tmp; \ - __asm__ __volatile__ (" \ - mfs %0, rmsr; \ - ori %0, %0, 2; \ - mts rmsr, %0" \ - : "=r" (tmp) \ - : \ - : "memory"); \ -} - -#define __cli() \ -{ \ - register unsigned tmp; \ - __asm__ __volatile__ (" \ - mfs %0, rmsr; \ - andi %0, %0, ~2; \ - mts rmsr, %0" \ - : "=r" (tmp) \ - : \ - : "memory"); \ -} - -#define __save_flags(flags) \ - __asm__ __volatile__ ("mfs %0, rmsr" : "=r" (flags)) -#define __restore_flags(flags) \ - __asm__ __volatile__ ("mts rmsr, %0" :: "r" (flags)) - -#define __save_flags_cli(flags) \ -{ \ - register unsigned tmp; \ - __asm__ __volatile__ (" \ - mfs %0, rmsr; \ - andi %1, %0, ~2; \ - mts rmsr, %1;" \ - : "=r" (flags), "=r" (tmp) \ - : \ - : "memory"); \ -} - -#define __save_flags_sti(flags) \ -{ \ - register unsigned tmp; \ - __asm__ __volatile__ (" \ - mfs %0, rmsr; \ - ori %1, %0, 2; \ - mts rmsr, %1;" \ - : "=r" (flags) ,"=r" (tmp) \ - : \ - : "memory"); \ -} - -/* For spinlocks etc */ -#define local_irq_save(flags) __save_flags_cli (flags) -#define local_irq_set(flags) __save_flags_sti (flags) -#define local_irq_restore(flags) __restore_flags (flags) -#define local_irq_disable() __cli () -#define local_irq_enable() __sti () - -#define cli() __cli () -#define sti() __sti () -#define save_flags(flags) __save_flags (flags) -#define restore_flags(flags) __restore_flags (flags) -#define save_flags_cli(flags) __save_flags_cli (flags) - -/* - * Force strict CPU ordering. - * Not really required on microblaze... - */ -#define nop() __asm__ __volatile__ ("nop") -#define mb() __asm__ __volatile__ ("nop" ::: "memory") -#define rmb() mb () -#define wmb() mb () -#define set_mb(var, value) do { var = value; mb(); } while (0) -#define set_wmb(var, value) do { var = value; wmb (); } while (0) - -#ifdef CONFIG_SMP -#define smp_mb() mb () -#define smp_rmb() rmb () -#define smp_wmb() wmb () -#else -#define smp_mb() barrier () -#define smp_rmb() barrier () -#define smp_wmb() barrier () -#endif - -#define xchg(ptr, with) \ - ((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr)))) -#define tas(ptr) (xchg ((ptr), 1)) - -extern inline unsigned long __xchg (unsigned long with, - __volatile__ void *ptr, int size) -{ - unsigned long tmp, flags; - - save_flags_cli (flags); - - switch (size) { - case 1: - tmp = *(unsigned char *)ptr; - *(unsigned char *)ptr = with; - break; - case 2: - tmp = *(unsigned short *)ptr; - *(unsigned short *)ptr = with; - break; - case 4: - tmp = *(unsigned long *)ptr; - *(unsigned long *)ptr = with; - break; - } - - restore_flags (flags); - - return tmp; -} - -#endif /* __MICROBLAZE_SYSTEM_H__ */ |