diff options
Diffstat (limited to 'include/asm-x86/vsyscall.h')
-rw-r--r-- | include/asm-x86/vsyscall.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-x86/vsyscall.h b/include/asm-x86/vsyscall.h new file mode 100644 index 0000000..3b8ceb4 --- /dev/null +++ b/include/asm-x86/vsyscall.h @@ -0,0 +1,44 @@ +#ifndef _ASM_X86_64_VSYSCALL_H_ +#define _ASM_X86_64_VSYSCALL_H_ + +enum vsyscall_num { + __NR_vgettimeofday, + __NR_vtime, + __NR_vgetcpu, +}; + +#define VSYSCALL_START (-10UL << 20) +#define VSYSCALL_SIZE 1024 +#define VSYSCALL_END (-2UL << 20) +#define VSYSCALL_MAPPED_PAGES 1 +#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) + +#ifdef __KERNEL__ +#include <linux/seqlock.h> + +#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16))) +#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) + +/* Definitions for CONFIG_GENERIC_TIME definitions */ +#define __section_vsyscall_gtod_data __attribute__ \ + ((unused, __section__ (".vsyscall_gtod_data"),aligned(16))) +#define __section_vsyscall_clock __attribute__ \ + ((unused, __section__ (".vsyscall_clock"),aligned(16))) +#define __vsyscall_fn __attribute__ ((unused,__section__(".vsyscall_fn"))) + +#define VGETCPU_RDTSCP 1 +#define VGETCPU_LSL 2 + +#define hpet_readl(a) readl((const void __iomem *)fix_to_virt(FIX_HPET_BASE) + a) +#define hpet_writel(d,a) writel(d, (void __iomem *)fix_to_virt(FIX_HPET_BASE) + a) + +extern int __vgetcpu_mode; +extern volatile unsigned long __jiffies; + +/* kernel space (writeable) */ +extern int vgetcpu_mode; +extern struct timezone sys_tz; + +#endif /* __KERNEL__ */ + +#endif /* _ASM_X86_64_VSYSCALL_H_ */ |