C++ (Cpp) set_user_gs Exemples

Exemple #1

Fichier : process_32.c Projet : xianjimli/datasafe

void
start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
{
	int cpu;

	set_user_gs(regs, 0);

	regs->fs		= 0;
	set_fs(USER_DS);
	regs->ds		= __USER_DS;
	regs->es		= __USER_DS;
	regs->ss		= __USER_DS;
	regs->cs		= __USER_CS;
	regs->ip		= new_ip;
	regs->sp		= new_sp;

	cpu = get_cpu();
	load_user_cs_desc(cpu, current->mm);
	put_cpu();

	/*
	 * Free the old FP and other extended state
	 */
	free_thread_xstate(current);
}

Exemple #2

Fichier : signal.c Projet : aldld/linux

int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
	unsigned long buf_val;
	void __user *buf;
	unsigned int tmpflags;
	unsigned int err = 0;

	/* Always make any pending restarted system calls return -EINTR */
	current->restart_block.fn = do_no_restart_syscall;

	get_user_try {

#ifdef CONFIG_X86_32
		set_user_gs(regs, GET_SEG(gs));
		COPY_SEG(fs);
		COPY_SEG(es);
		COPY_SEG(ds);
#endif /* CONFIG_X86_32 */

		COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
		COPY(dx); COPY(cx); COPY(ip); COPY(ax);

#ifdef CONFIG_X86_64
		COPY(r8);
		COPY(r9);
		COPY(r10);
		COPY(r11);
		COPY(r12);
		COPY(r13);
		COPY(r14);
		COPY(r15);
#endif /* CONFIG_X86_64 */

#ifdef CONFIG_X86_32
		COPY_SEG_CPL3(cs);
		COPY_SEG_CPL3(ss);
#else /* !CONFIG_X86_32 */
		/* Kernel saves and restores only the CS segment register on signals,
		 * which is the bare minimum needed to allow mixed 32/64-bit code.
		 * App's signal handler can save/restore other segments if needed. */
		COPY_SEG_CPL3(cs);
#endif /* CONFIG_X86_32 */

		get_user_ex(tmpflags, &sc->flags);
		regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
		regs->orig_ax = -1;		/* disable syscall checks */

		get_user_ex(buf_val, &sc->fpstate);
		buf = (void __user *)buf_val;
	} get_user_catch(err);

	err |= fpu__restore_sig(buf, config_enabled(CONFIG_X86_32));

	force_iret();

	return err;
}

Exemple #3

Fichier : signal.c Projet : romanbb/android_kernel_lge_d851

int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
		       unsigned long *pax)
{
	void __user *buf;
	unsigned int tmpflags;
	unsigned int err = 0;

	/*                                                              */
	current_thread_info()->restart_block.fn = do_no_restart_syscall;

	get_user_try {

#ifdef CONFIG_X86_32
		set_user_gs(regs, GET_SEG(gs));
		COPY_SEG(fs);
		COPY_SEG(es);
		COPY_SEG(ds);
#endif /*               */

		COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
		COPY(dx); COPY(cx); COPY(ip);

#ifdef CONFIG_X86_64
		COPY(r8);
		COPY(r9);
		COPY(r10);
		COPY(r11);
		COPY(r12);
		COPY(r13);
		COPY(r14);
		COPY(r15);
#endif /*               */

#ifdef CONFIG_X86_32
		COPY_SEG_CPL3(cs);
		COPY_SEG_CPL3(ss);
#else /*                */
		/*                                                                   
                                                                    
                                                                     */
		COPY_SEG_CPL3(cs);
#endif /*               */

		get_user_ex(tmpflags, &sc->flags);
		regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
		regs->orig_ax = -1;		/*                        */

		get_user_ex(buf, &sc->fpstate);
		err |= restore_i387_xstate(buf);

		get_user_ex(*pax, &sc->ax);
	} get_user_catch(err);

	return err;
}

Exemple #4

Fichier : process_32.c Projet : DirtyDroidX/android_kernel_htc_m8ul

void
start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
{
	set_user_gs(regs, 0);
	regs->fs		= 0;
	regs->ds		= __USER_DS;
	regs->es		= __USER_DS;
	regs->ss		= __USER_DS;
	regs->cs		= __USER_CS;
	regs->ip		= new_ip;
	regs->sp		= new_sp;
	free_thread_xstate(current);
}

Exemple #5

Fichier : process_32.c Projet : JcShang/linux-80211n-csitool

void
start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
{
	set_user_gs(regs, 0);
	regs->fs		= 0;
	regs->ds		= __USER_DS;
	regs->es		= __USER_DS;
	regs->ss		= __USER_DS;
	regs->cs		= __USER_CS;
	regs->ip		= new_ip;
	regs->sp		= new_sp;
	regs->flags		= X86_EFLAGS_IF;
	force_iret();
}

Exemple #6

Fichier : process_32.c Projet : kozmikkick/eternityprj-kernel-endeavoru-128

void
start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
{
	set_user_gs(regs, 0);
	regs->fs		= 0;
	regs->ds		= __USER_DS;
	regs->es		= __USER_DS;
	regs->ss		= __USER_DS;
	regs->cs		= __USER_CS;
	regs->ip		= new_ip;
	regs->sp		= new_sp;
	/*
	 * Free the old FP and other extended state
	 */
	free_thread_xstate(current);
}

Exemple #7

Fichier : process_32.c Projet : AdrianHuang/linux-3.8.13

void
start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
{
	set_user_gs(regs, 0);
	regs->fs		= 0;
	regs->ds		= __USER_DS;
	regs->es		= __USER_DS;
	regs->ss		= __USER_DS;
	regs->cs		= __USER_CS;
	regs->ip		= new_ip;
	regs->sp		= new_sp;
	regs->flags		= X86_EFLAGS_IF;
	/*
	 * force it to the iret return path by making it look as if there was
	 * some work pending.
	 */
	set_thread_flag(TIF_NOTIFY_RESUME);
}

Exemple #8

Fichier : process_32.c Projet : nosnilwar/linux-raw-gov-2.6.38.8

void
start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
{
	set_user_gs(regs, 0);
	regs->fs		= 0;
	set_fs(USER_DS);
	regs->ds		= __USER_DS;
	regs->es		= __USER_DS;
	regs->ss		= __USER_DS;
	regs->cs		= __USER_CS;
	regs->ip		= new_ip;
	regs->sp		= new_sp;
#ifndef CONFIG_IPIPE	/* Lazily handled, init_fpu() will reset the state. */
	/*
	 * Free the old FP and other extended state
	 */
	free_thread_xstate(current);
#endif
}