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Last change
on this file since 596 was 442, checked in by Paul Smedley, 16 years ago |
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Reorganise code to make maintenance easier
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File size:
865 bytes
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| 1 | #ifndef __ASM_SYSTEM_H
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| 2 | #define __ASM_SYSTEM_H
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| 3 |
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| 4 | #include <linux/kernel.h>
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| 5 | #include <asm/segment.h>
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| 6 |
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| 7 | #ifdef __KERNEL__
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| 8 |
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| 9 | struct task_struct; /* one of the stranger aspects of C forward declarations.. */
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| 10 | extern void FASTCALL(__switch_to(struct task_struct *prev, struct task_struct *next));
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| 11 |
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| 12 | /*
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| 13 | * disable hlt during certain critical i/o operations
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| 14 | */
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| 15 | #define HAVE_DISABLE_HLT
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| 16 | void disable_hlt(void);
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| 17 | void enable_hlt(void);
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| 18 |
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| 19 | void save_flags(u32 *flags);
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| 20 | #pragma aux save_flags = \
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| 21 | "pushfd" \
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| 22 | "mov dword ptr [eax], edx" \
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| 23 | modify [edx] \
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| 24 | parm [eax];
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| 25 |
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| 26 | void restore_flags(u32 flags);
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| 27 | #pragma aux restore_flags = \
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| 28 | "push eax" \
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| 29 | "popfd" \
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| 30 | parm [eax];
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| 31 |
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| 32 | #define cli() _asm cli;
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| 33 | #define sti() _asm sti;
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| 34 | #endif
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| 35 |
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| 36 | #define smp_mb() barrier()
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| 37 | #define smp_rmb() barrier()
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| 38 | #define smp_wmb() barrier()
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| 39 |
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| 40 | #endif
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