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System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
Software | : | Apache. PHP/5.3.6-13ubuntu3.10 |
ID | : | uid=65534(nobody) gid=65534(nogroup) groups=65534(nogroup)
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/
usr/
src/
linux-headers-3.0.0-14/
arch/
mn10300/
include/
asm/
- drwxr-xr-x
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Viewing file: system.h (2.88 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* MN10300 System definitions * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #ifndef _ASM_SYSTEM_H #define _ASM_SYSTEM_H
#include <asm/cpu-regs.h> #include <asm/intctl-regs.h>
#ifdef __KERNEL__ #ifndef __ASSEMBLY__
#include <linux/kernel.h> #include <linux/irqflags.h> #include <asm/atomic.h>
#if !defined(CONFIG_LAZY_SAVE_FPU) struct fpu_state_struct; extern asmlinkage void fpu_save(struct fpu_state_struct *); #define switch_fpu(prev, next) \ do { \ if ((prev)->thread.fpu_flags & THREAD_HAS_FPU) { \ (prev)->thread.fpu_flags &= ~THREAD_HAS_FPU; \ (prev)->thread.uregs->epsw &= ~EPSW_FE; \ fpu_save(&(prev)->thread.fpu_state); \ } \ } while (0) #else #define switch_fpu(prev, next) do {} while (0) #endif
struct task_struct; struct thread_struct;
extern asmlinkage struct task_struct *__switch_to(struct thread_struct *prev, struct thread_struct *next, struct task_struct *prev_task);
/* context switching is now performed out-of-line in switch_to.S */ #define switch_to(prev, next, last) \ do { \ switch_fpu(prev, next); \ current->thread.wchan = (u_long) __builtin_return_address(0); \ (last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \ mb(); \ current->thread.wchan = 0; \ } while (0)
#define arch_align_stack(x) (x)
#define nop() asm volatile ("nop")
/* * Force strict CPU ordering. * And yes, this is required on UP too when we're talking * to devices. * * For now, "wmb()" doesn't actually do anything, as all * Intel CPU's follow what Intel calls a *Processor Order*, * in which all writes are seen in the program order even * outside the CPU. * * I expect future Intel CPU's to have a weaker ordering, * but I'd also expect them to finally get their act together * and add some real memory barriers if so. * * Some non intel clones support out of order store. wmb() ceases to be a * nop for these. */
#define mb() asm volatile ("": : :"memory") #define rmb() mb() #define wmb() asm volatile ("": : :"memory")
#ifdef CONFIG_SMP #define smp_mb() mb() #define smp_rmb() rmb() #define smp_wmb() wmb() #define set_mb(var, value) do { xchg(&var, value); } while (0) #else /* CONFIG_SMP */ #define smp_mb() barrier() #define smp_rmb() barrier() #define smp_wmb() barrier() #define set_mb(var, value) do { var = value; mb(); } while (0) #endif /* CONFIG_SMP */
#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#define read_barrier_depends() do {} while (0) #define smp_read_barrier_depends() do {} while (0)
#endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_SYSTEM_H */
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