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Diffstat (limited to 'include/asm-v850/system.h')
| -rw-r--r-- | include/asm-v850/system.h | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/include/asm-v850/system.h b/include/asm-v850/system.h deleted file mode 100644 index 7daf1fdee11..00000000000 --- a/include/asm-v850/system.h +++ /dev/null @@ -1,123 +0,0 @@ -/* - * include/asm-v850/system.h -- Low-level interrupt/thread ops - * - * Copyright (C) 2001,02,03 NEC Electronics Corporation - * Copyright (C) 2001,02,03 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> - */ - -#ifndef __V850_SYSTEM_H__ -#define __V850_SYSTEM_H__ - -#include <linux/linkage.h> -#include <asm/ptrace.h> - - -/* - * 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 local_irq_enable() __asm__ __volatile__ ("ei") -#define local_irq_disable() __asm__ __volatile__ ("di") - -#define local_save_flags(flags) \ - __asm__ __volatile__ ("stsr %1, %0" : "=r" (flags) : "i" (SR_PSW)) -#define local_restore_flags(flags) \ - __asm__ __volatile__ ("ldsr %0, %1" :: "r" (flags), "i" (SR_PSW)) - -/* For spinlocks etc */ -#define local_irq_save(flags) \ - do { local_save_flags (flags); local_irq_disable (); } while (0) -#define local_irq_restore(flags) \ - local_restore_flags (flags); - - -static inline int irqs_disabled (void) -{ - unsigned flags; - local_save_flags (flags); - return !!(flags & 0x20); -} - - -/* - * Force strict CPU ordering. - * Not really required on v850... - */ -#define nop() __asm__ __volatile__ ("nop") -#define mb() __asm__ __volatile__ ("" ::: "memory") -#define rmb() mb () -#define wmb() mb () -#define read_barrier_depends() ((void)0) -#define set_mb(var, value) do { xchg (&var, value); } while (0) - -#define smp_mb() mb () -#define smp_rmb() rmb () -#define smp_wmb() wmb () -#define smp_read_barrier_depends() read_barrier_depends() - -#define xchg(ptr, with) \ - ((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr)))) - -static inline unsigned long __xchg (unsigned long with, - __volatile__ void *ptr, int size) -{ - unsigned long tmp, flags; - - local_irq_save (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; - } - - local_irq_restore (flags); - - return tmp; -} - -#include <asm-generic/cmpxchg-local.h> - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ - (unsigned long)(n), sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - -#ifndef CONFIG_SMP -#include <asm-generic/cmpxchg.h> -#endif - -#define arch_align_stack(x) (x) - -#endif /* __V850_SYSTEM_H__ */ |