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https://github.com/brain-hackers/u-boot-brain
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e0f21e1cbc
'extern inline' is not portable across various C standards. To ensure compatiblity with various standards/compilers change the functions to static inline. This is a portable construct and serves as a comparable definition to 'extern inline' from the gnu90 standard. Additionally remove the function prototypes as they are not required due to the functions being declared static and functions are correctly ordered based on dependence. Signed-off-by: Nathan Rossi <nathan@nathanrossi.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Tom Rini <trini@konsulko.com> Acked-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
162 lines
3.8 KiB
C
162 lines
3.8 KiB
C
/*
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* include/asm-microblaze/system.h -- Low-level interrupt/thread ops
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*
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* Copyright (C) 2003 John Williams (jwilliams@itee.uq.edu.au)
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* based upon microblaze version
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* Copyright (C) 2001 NEC Corporation
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* Copyright (C) 2001 Miles Bader <miles@gnu.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* Written by Miles Bader <miles@gnu.org>
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* Microblaze port by John Williams
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* Microblaze port by John Williams
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*/
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#ifndef __MICROBLAZE_SYSTEM_H__
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#define __MICROBLAZE_SYSTEM_H__
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#if 0
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#include <linux/linkage.h>
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#endif
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#include <asm/ptrace.h>
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#define prepare_to_switch() do { } while (0)
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/*
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* switch_to(n) should switch tasks to task ptr, first checking that
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* ptr isn't the current task, in which case it does nothing.
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*/
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struct thread_struct;
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extern void *switch_thread (struct thread_struct *last,
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struct thread_struct *next);
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#define switch_to(prev,next,last) do { \
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if (prev != next) { \
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(last) = switch_thread (&prev->thread, &next->thread); \
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} \
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} while (0)
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/* Enable/disable interrupts. */
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#define __sti() \
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{ \
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register unsigned tmp; \
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__asm__ __volatile__ (" \
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mfs %0, rmsr; \
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ori %0, %0, 2; \
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mts rmsr, %0" \
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: "=r" (tmp) \
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: \
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: "memory"); \
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}
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#define __cli() \
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{ \
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register unsigned tmp; \
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__asm__ __volatile__ (" \
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mfs %0, rmsr; \
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andi %0, %0, ~2; \
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mts rmsr, %0" \
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: "=r" (tmp) \
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: \
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: "memory"); \
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}
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#define __save_flags(flags) \
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__asm__ __volatile__ ("mfs %0, rmsr" : "=r" (flags))
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#define __restore_flags(flags) \
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__asm__ __volatile__ ("mts rmsr, %0" :: "r" (flags))
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#define __save_flags_cli(flags) \
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{ \
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register unsigned tmp; \
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__asm__ __volatile__ (" \
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mfs %0, rmsr; \
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andi %1, %0, ~2; \
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mts rmsr, %1;" \
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: "=r" (flags), "=r" (tmp) \
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: \
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: "memory"); \
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}
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#define __save_flags_sti(flags) \
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{ \
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register unsigned tmp; \
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__asm__ __volatile__ (" \
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mfs %0, rmsr; \
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ori %1, %0, 2; \
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mts rmsr, %1;" \
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: "=r" (flags) ,"=r" (tmp) \
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: \
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: "memory"); \
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}
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/* For spinlocks etc */
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#define local_irq_save(flags) __save_flags_cli (flags)
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#define local_irq_set(flags) __save_flags_sti (flags)
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#define local_irq_restore(flags) __restore_flags (flags)
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#define local_irq_disable() __cli ()
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#define local_irq_enable() __sti ()
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#define cli() __cli ()
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#define sti() __sti ()
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#define save_flags(flags) __save_flags (flags)
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#define restore_flags(flags) __restore_flags (flags)
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#define save_flags_cli(flags) __save_flags_cli (flags)
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/*
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* Force strict CPU ordering.
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* Not really required on microblaze...
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*/
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#define nop() __asm__ __volatile__ ("nop")
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#define mb() __asm__ __volatile__ ("nop" ::: "memory")
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#define rmb() mb ()
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#define wmb() mb ()
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#define set_mb(var, value) do { var = value; mb(); } while (0)
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#define set_wmb(var, value) do { var = value; wmb (); } while (0)
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#ifdef CONFIG_SMP
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#define smp_mb() mb ()
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#define smp_rmb() rmb ()
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#define smp_wmb() wmb ()
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#else
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#define smp_mb() barrier ()
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#define smp_rmb() barrier ()
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#define smp_wmb() barrier ()
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#endif
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#define xchg(ptr, with) \
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((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr))))
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#define tas(ptr) (xchg ((ptr), 1))
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static inline unsigned long __xchg(unsigned long with,
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__volatile__ void *ptr, int size)
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{
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unsigned long tmp, flags;
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save_flags_cli (flags);
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switch (size) {
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case 1:
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tmp = *(unsigned char *)ptr;
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*(unsigned char *)ptr = with;
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break;
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case 2:
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tmp = *(unsigned short *)ptr;
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*(unsigned short *)ptr = with;
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break;
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case 4:
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tmp = *(unsigned long *)ptr;
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*(unsigned long *)ptr = with;
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break;
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}
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restore_flags (flags);
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return tmp;
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}
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#endif /* __MICROBLAZE_SYSTEM_H__ */
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