Exemple #1
0
static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
	unsigned long tmp;
	int err = 0;

	err |= copy_to_user(&sc->sc_regs.r0, &regs->r00,
			    32*sizeof(unsigned long));

	err |= __put_user(regs->sa0, &sc->sc_regs.sa0);
	err |= __put_user(regs->lc0, &sc->sc_regs.lc0);
	err |= __put_user(regs->sa1, &sc->sc_regs.sa1);
	err |= __put_user(regs->lc1, &sc->sc_regs.lc1);
	err |= __put_user(regs->m0, &sc->sc_regs.m0);
	err |= __put_user(regs->m1, &sc->sc_regs.m1);
	err |= __put_user(regs->usr, &sc->sc_regs.usr);
	err |= __put_user(regs->preds, &sc->sc_regs.p3_0);
	err |= __put_user(regs->gp, &sc->sc_regs.gp);
	err |= __put_user(regs->ugp, &sc->sc_regs.ugp);

	tmp = pt_elr(regs); err |= __put_user(tmp, &sc->sc_regs.pc);
	tmp = pt_cause(regs); err |= __put_user(tmp, &sc->sc_regs.cause);
	tmp = pt_badva(regs); err |= __put_user(tmp, &sc->sc_regs.badva);

	return err;
}
Exemple #2
0
static int genregs_get(struct task_struct *target,
		   const struct user_regset *regset,
		   unsigned int pos, unsigned int count,
		   void *kbuf, void __user *ubuf)
{
	int ret;
	unsigned int dummy;
	struct pt_regs *regs = task_pt_regs(target);


	if (!regs)
		return -EIO;

	/* The general idea here is that the copyout must happen in
	 * exactly the same order in which the userspace expects these
	 * regs. Now, the sequence in userspace does not match the
	 * sequence in the kernel, so everything past the 32 gprs
	 * happens one at a time.
	 */
	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
				  &regs->r00, 0, 32*sizeof(unsigned long));

#define ONEXT(KPT_REG, USR_REG) \
	if (!ret) \
		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, \
			KPT_REG, offsetof(struct user_regs_struct, USR_REG), \
			offsetof(struct user_regs_struct, USR_REG) + \
				 sizeof(unsigned long));

	/* Must be exactly same sequence as struct user_regs_struct */
	ONEXT(&regs->sa0, sa0);
	ONEXT(&regs->lc0, lc0);
	ONEXT(&regs->sa1, sa1);
	ONEXT(&regs->lc1, lc1);
	ONEXT(&regs->m0, m0);
	ONEXT(&regs->m1, m1);
	ONEXT(&regs->usr, usr);
	ONEXT(&regs->preds, p3_0);
	ONEXT(&regs->gp, gp);
	ONEXT(&regs->ugp, ugp);
	ONEXT(&pt_elr(regs), pc);
	dummy = pt_cause(regs);
	ONEXT(&dummy, cause);
	ONEXT(&pt_badva(regs), badva);

	/* Pad the rest with zeros, if needed */
	if (!ret)
		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
					offsetof(struct user_regs_struct, pad1), -1);
	return ret;
}
Exemple #3
0
void execute_protection_fault(struct pt_regs *regs)
{
	unsigned long badvadr = pt_badva(regs);

	do_page_fault(badvadr, FLT_IFETCH, regs);
}
Exemple #4
0
void write_protection_fault(struct pt_regs *regs)
{
	unsigned long badvadr = pt_badva(regs);

	do_page_fault(badvadr, FLT_STORE, regs);
}
Exemple #5
0
void read_protection_fault(struct pt_regs *regs)
{
	unsigned long badvadr = pt_badva(regs);

	do_page_fault(badvadr, FLT_LOAD, regs);
}