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| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-18 03:13:17 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 09:55:19 +0400 |
| commit | 8ede0bdb63305d3353efd97e9af6210afb05734e (patch) | |
| tree | a9500a323d0a2dcadca43c23b5c20186f6d9b724 /arch/um/include/asm/system-generic.h | |
| parent | 8569c9140bd41089f9b6be8837ca421102714a90 (diff) | |
| download | linux-8ede0bdb63305d3353efd97e9af6210afb05734e.tar.xz | |
x86, um: initial part of asm-um move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/um/include/asm/system-generic.h')
| -rw-r--r-- | arch/um/include/asm/system-generic.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/um/include/asm/system-generic.h b/arch/um/include/asm/system-generic.h new file mode 100644 index 000000000000..5bcfa35e7a22 --- /dev/null +++ b/arch/um/include/asm/system-generic.h @@ -0,0 +1,47 @@ +#ifndef __UM_SYSTEM_GENERIC_H +#define __UM_SYSTEM_GENERIC_H + +#include "asm/arch/system.h" + +#undef switch_to +#undef local_irq_save +#undef local_irq_restore +#undef local_irq_disable +#undef local_irq_enable +#undef local_save_flags +#undef local_irq_restore +#undef local_irq_enable +#undef local_irq_disable +#undef local_irq_save +#undef irqs_disabled + +extern void *switch_to(void *prev, void *next, void *last); + +extern int get_signals(void); +extern int set_signals(int enable); +extern int get_signals(void); +extern void block_signals(void); +extern void unblock_signals(void); + +#define local_save_flags(flags) do { typecheck(unsigned long, flags); \ + (flags) = get_signals(); } while(0) +#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \ + set_signals(flags); } while(0) + +#define local_irq_save(flags) do { local_save_flags(flags); \ + local_irq_disable(); } while(0) + +#define local_irq_enable() unblock_signals() +#define local_irq_disable() block_signals() + +#define irqs_disabled() \ +({ \ + unsigned long flags; \ + local_save_flags(flags); \ + (flags == 0); \ +}) + +extern void *_switch_to(void *prev, void *next, void *last); +#define switch_to(prev, next, last) prev = _switch_to(prev, next, last) + +#endif |