C++ (Cpp) fpregs_store примеры использования

Пример #1

Файл: signal.c Проект: 020gzh/linux

/* Returns non-zero on fault. */
static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
{
	_sigregs user_sregs;

	/* Copy a 'clean' PSW mask to the user to avoid leaking
	   information about whether PER is currently on.  */
	user_sregs.regs.psw.mask = PSW_USER_BITS |
		(regs->psw.mask & (PSW_MASK_USER | PSW_MASK_RI));
	user_sregs.regs.psw.addr = regs->psw.addr;
	memcpy(&user_sregs.regs.gprs, &regs->gprs, sizeof(sregs->regs.gprs));
	memcpy(&user_sregs.regs.acrs, current->thread.acrs,
	       sizeof(user_sregs.regs.acrs));
	fpregs_store(&user_sregs.fpregs, &current->thread.fpu);
	if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs)))
		return -EFAULT;
	return 0;
}

Пример #2

Файл: compat_signal.c Проект: Camedpuffer/linux

static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)
{
	_sigregs32 user_sregs;
	int i;

	user_sregs.regs.psw.mask = (__u32)(regs->psw.mask >> 32);
	user_sregs.regs.psw.mask &= PSW32_MASK_USER | PSW32_MASK_RI;
	user_sregs.regs.psw.mask |= PSW32_USER_BITS;
	user_sregs.regs.psw.addr = (__u32) regs->psw.addr |
		(__u32)(regs->psw.mask & PSW_MASK_BA);
	for (i = 0; i < NUM_GPRS; i++)
		user_sregs.regs.gprs[i] = (__u32) regs->gprs[i];
	memcpy(&user_sregs.regs.acrs, current->thread.acrs,
	       sizeof(user_sregs.regs.acrs));
	fpregs_store((_s390_fp_regs *) &user_sregs.fpregs, &current->thread.fpu);
	if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs32)))
		return -EFAULT;
	return 0;
}