Esempio n. 1
0
asmlinkage int sys_rt_sigreturn(long r10, long r11, long r12, long r13,
                                long mof, long srp, struct pt_regs *regs)
{
	struct rt_sigframe __user *frame = (struct rt_sigframe *)rdusp();
	sigset_t set;

        if (((long)frame) & 3)
                goto badframe;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_lock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_unlock_irq(&current->sighand->siglock);

	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, rdusp()) == -EFAULT)
		goto badframe;

	return regs->r10;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 2
0
File: signal.c Progetto: 4atty/linux
asmlinkage int sys_rt_sigreturn(long r10, long r11, long r12, long r13,
                                long mof, long srp, struct pt_regs *regs)
{
	struct rt_sigframe __user *frame = (struct rt_sigframe *)rdusp();
	sigset_t set;

        /*
         * Since we stacked the signal on a dword boundary,
         * then frame should be dword aligned here.  If it's
         * not, then the user is trying to mess with us.
         */
        if (((long)frame) & 3)
                goto badframe;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
		goto badframe;

	set_current_blocked(&set);

	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, rdusp()) == -EFAULT)
		goto badframe;

	return regs->r10;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 3
0
/*
 * Fill in the user structure for an ECOFF core dump.
 */
void
dump_thread(struct pt_regs * pt, struct user * dump)
{
	/* switch stack follows right below pt_regs: */
	struct switch_stack * sw = ((struct switch_stack *) pt) - 1;

	dump->magic = CMAGIC;
	dump->start_code  = current->mm->start_code;
	dump->start_data  = current->mm->start_data;
	dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
	dump->u_tsize = ((current->mm->end_code - dump->start_code)
			 >> PAGE_SHIFT);
	dump->u_dsize = ((current->mm->brk + PAGE_SIZE-1 - dump->start_data)
			 >> PAGE_SHIFT);
	dump->u_ssize = (current->mm->start_stack - dump->start_stack
			 + PAGE_SIZE-1) >> PAGE_SHIFT;

	/*
	 * We store the registers in an order/format that is
	 * compatible with DEC Unix/OSF/1 as this makes life easier
	 * for gdb.
	 */
	dump->regs[EF_V0]  = pt->r0;
	dump->regs[EF_T0]  = pt->r1;
	dump->regs[EF_T1]  = pt->r2;
	dump->regs[EF_T2]  = pt->r3;
	dump->regs[EF_T3]  = pt->r4;
	dump->regs[EF_T4]  = pt->r5;
	dump->regs[EF_T5]  = pt->r6;
	dump->regs[EF_T6]  = pt->r7;
	dump->regs[EF_T7]  = pt->r8;
	dump->regs[EF_S0]  = sw->r9;
	dump->regs[EF_S1]  = sw->r10;
	dump->regs[EF_S2]  = sw->r11;
	dump->regs[EF_S3]  = sw->r12;
	dump->regs[EF_S4]  = sw->r13;
	dump->regs[EF_S5]  = sw->r14;
	dump->regs[EF_S6]  = sw->r15;
	dump->regs[EF_A3]  = pt->r19;
	dump->regs[EF_A4]  = pt->r20;
	dump->regs[EF_A5]  = pt->r21;
	dump->regs[EF_T8]  = pt->r22;
	dump->regs[EF_T9]  = pt->r23;
	dump->regs[EF_T10] = pt->r24;
	dump->regs[EF_T11] = pt->r25;
	dump->regs[EF_RA]  = pt->r26;
	dump->regs[EF_T12] = pt->r27;
	dump->regs[EF_AT]  = pt->r28;
	dump->regs[EF_SP]  = rdusp();
	dump->regs[EF_PS]  = pt->ps;
	dump->regs[EF_PC]  = pt->pc;
	dump->regs[EF_GP]  = pt->gp;
	dump->regs[EF_A0]  = pt->r16;
	dump->regs[EF_A1]  = pt->r17;
	dump->regs[EF_A2]  = pt->r18;
	memcpy((char *)dump->regs + EF_SIZE, sw->fp, 32 * 8);
}
Esempio n. 4
0
asmlinkage int sys_sigreturn(long r10, long r11, long r12, long r13, long mof,
                             long srp, struct pt_regs *regs)
{
	struct sigframe __user *frame = (struct sigframe *)rdusp();
	sigset_t set;

        if (((long)frame) & 3)
                goto badframe;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__get_user(set.sig[0], &frame->sc.oldmask)
	    || (_NSIG_WORDS > 1
		&& __copy_from_user(&set.sig[1], frame->extramask,
				    sizeof(frame->extramask))))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_lock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_unlock_irq(&current->sighand->siglock);

	if (restore_sigcontext(regs, &frame->sc))
		goto badframe;

	

	return regs->r10;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 5
0
long vmadump_store_cpu(struct vmadump_map_ctx *ctx, struct file *file,
		       struct pt_regs *regs) {
    struct switch_stack *ss;
    unsigned long usp;
    long bytes = 0, r;

    /* Store struct pt_regs */
    r = write_kern(ctx, file, regs, sizeof(*regs));
    if (r != sizeof(*regs)) goto err;
    bytes += r;

    /* Alpha has more registers than what's in struct ptregs to save
     * The 'switch_stack' structure contains the rest of the integer
     * registers and the floating point registers.  Then we still have
     * to go after the user's stack pointer via the PAL code. */
    /* Some pointer voodoo... the switch_stack structure got
     * pushed on top of the struct pt_regs.. */
    ss = ((struct switch_stack *) regs)-1;
    usp = rdusp();

    r = write_kern(ctx, file, ss, sizeof(*ss));
    if (r != sizeof(*ss)) goto err;
    bytes += r;

    r = write_kern(ctx, file, &usp, sizeof(usp));
    if (r != sizeof(usp)) goto err;
    bytes += r;
    return bytes;

 err:
    if (r >= 0) r = -EIO;
    return r;
}
Esempio n. 6
0
asmlinkage int do_rt_sigreturn(unsigned long __unused)
{
	struct pt_regs *regs = (struct pt_regs *)__unused;
	unsigned long usp = rdusp();
	struct rt_sigframe *frame = (struct rt_sigframe *)(usp);
	sigset_t set;
	int r0;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	set_current_blocked(&set);

	if (rt_restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->usp) == -EFAULT)
		goto badframe;

	return r0;

 badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 7
0
asmlinkage int do_rt_sigreturn(unsigned long __unused,...)
{
	struct pt_regs *regs = (struct pt_regs *) &__unused;
	unsigned long usp = rdusp();
	struct rt_sigframe *frame = (struct rt_sigframe *)(usp - 4);
	sigset_t set;
	int er0;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_unlock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_lock_irq(&current->sighand->siglock);
	
	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, usp) == -EFAULT)
		goto badframe;

	return er0;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 8
0
asmlinkage int do_sigreturn(unsigned long __unused,...)
{
	struct pt_regs *regs = (struct pt_regs *) (&__unused - 1);
	unsigned long usp = rdusp();
	struct sigframe *frame = (struct sigframe *)(usp - 4);
	sigset_t set;
	int er0;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
	    (_NSIG_WORDS > 1 &&
	     __copy_from_user(&set.sig[1], &frame->extramask,
			      sizeof(frame->extramask))))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_lock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_unlock_irq(&current->sighand->siglock);
	
	if (restore_sigcontext(regs, &frame->sc, &er0))
		goto badframe;
	return er0;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 9
0
/*
 * "alpha_clone()".. By the time we get here, the
 * non-volatile registers have also been saved on the
 * stack. We do some ugly pointer stuff here.. (see
 * also copy_thread)
 *
 * Notice that "fork()" is implemented in terms of clone,
 * with parameters (SIGCHLD, 0).
 */
int alpha_clone(unsigned long clone_flags, unsigned long usp,
	struct switch_stack * swstack)
{
	if (!usp)
		usp = rdusp();
	return do_fork(clone_flags, usp, (struct pt_regs *) (swstack+1));
}
Esempio n. 10
0
asmlinkage int sys_sigreturn(void)
{
	struct pt_regs *regs = current_pt_regs();
	struct sigframe __user *frame = (struct sigframe *)rdusp();
	sigset_t set;

        /*
         * Since we stacked the signal on a dword boundary,
         * then frame should be dword aligned here.  If it's
         * not, then the user is trying to mess with us.
         */
        if (((long)frame) & 3)
                goto badframe;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__get_user(set.sig[0], &frame->sc.oldmask)
	    || (_NSIG_WORDS > 1
		&& __copy_from_user(&set.sig[1], frame->extramask,
				    sizeof(frame->extramask))))
		goto badframe;

	set_current_blocked(&set);

	if (restore_sigcontext(regs, &frame->sc))
		goto badframe;

	/* TODO: SIGTRAP when single-stepping as in arm ? */

	return regs->r10;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 11
0
asmlinkage int sys_rt_sigreturn(void)
{
	unsigned long usp = rdusp();
	struct rt_sigframe *frame = (struct rt_sigframe *)(usp - 4);
	sigset_t set;
	int er0;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
		goto badframe;

	set_current_blocked(&set);

	if (restore_sigcontext(&frame->uc.uc_mcontext, &er0))
		goto badframe;

	if (restore_altstack(&frame->uc.uc_stack))
		goto badframe;

	return er0;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 12
0
static inline int rt_setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs)
{
	int err = 0;

#define SETUP(x) err |= __put_user(regs->x, &sc->sc_##x)

	SETUP(r0); SETUP(r1); SETUP(r2); SETUP(r3);
	SETUP(r4); SETUP(r5); SETUP(r6); SETUP(r7);
	SETUP(p0); SETUP(p1); SETUP(p2); SETUP(p3);
	SETUP(p4); SETUP(p5);
	err |= __put_user(rdusp(), &sc->sc_usp);
	SETUP(a0w); SETUP(a1w);
	SETUP(a0x); SETUP(a1x);
	SETUP(astat);
	SETUP(rets);
	SETUP(pc);
	SETUP(retx);
	SETUP(fp);
	SETUP(i0); SETUP(i1); SETUP(i2); SETUP(i3);
	SETUP(m0); SETUP(m1); SETUP(m2); SETUP(m3);
	SETUP(l0); SETUP(l1); SETUP(l2); SETUP(l3);
	SETUP(b0); SETUP(b1); SETUP(b2); SETUP(b3);
	SETUP(lc0); SETUP(lc1);
	SETUP(lt0); SETUP(lt1);
	SETUP(lb0); SETUP(lb1);
	SETUP(seqstat);

	return err;
}
Esempio n. 13
0
File: signal.c Progetto: 7L/pi_plus
asmlinkage int do_sigreturn(unsigned long __unused,...)
{
	struct pt_regs *regs = (struct pt_regs *) (&__unused - 1);
	unsigned long usp = rdusp();
	struct sigframe *frame = (struct sigframe *)(usp - 4);
	sigset_t set;
	int er0;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
	    (_NSIG_WORDS > 1 &&
	     __copy_from_user(&set.sig[1], &frame->extramask,
			      sizeof(frame->extramask))))
		goto badframe;

	set_current_blocked(&set);
	
	if (restore_sigcontext(regs, &frame->sc, &er0))
		goto badframe;
	return er0;

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}
Esempio n. 14
0
/* FIXME: Is parent_tid/child_tid really third/fourth argument? Update lib? */
asmlinkage int sys_clone(unsigned long newusp, unsigned long flags,
                         int* parent_tid, int* child_tid, long mof, long srp,
                         struct pt_regs *regs)
{
    if (!newusp)
        newusp = rdusp();
    return do_fork(flags, newusp, regs, 0, parent_tid, child_tid);
}
Esempio n. 15
0
static void
setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
            struct pt_regs *regs, struct switch_stack * sw)
{
    unsigned long oldsp, r26, err = 0;
    struct sigframe *frame;

    oldsp = rdusp();
    frame = get_sigframe(ka, oldsp, sizeof(*frame));
    if (verify_area(VERIFY_WRITE, frame, sizeof(*frame)))
        goto give_sigsegv;

    err |= setup_sigcontext(&frame->sc, regs, sw, set->sig[0], oldsp);
    if (_NSIG_WORDS > 1) {
        err |= __copy_to_user(frame->extramask, &set->sig[1],
                              sizeof(frame->extramask));
    }
    if (err)
        goto give_sigsegv;

    /* Set up to return from userspace.  If provided, use a stub
       already in userspace.  */
    if (ka->ka_restorer) {
        r26 = (unsigned long) ka->ka_restorer;
    } else {
        err |= __put_user(INSN_MOV_R30_R16, frame->retcode+0);
        err |= __put_user(INSN_LDI_R0+__NR_sigreturn, frame->retcode+1);
        err |= __put_user(INSN_CALLSYS, frame->retcode+2);
        imb();
        r26 = (unsigned long) frame->retcode;
    }

    /* Check that everything was written properly.  */
    if (err)
        goto give_sigsegv;

    /* "Return" to the handler */
    regs->r26 = r26;
    regs->r27 = regs->pc = (unsigned long) ka->sa.sa_handler;
    regs->r16 = sig;			/* a0: signal number */
    regs->r17 = 0;				/* a1: exception code */
    regs->r18 = (unsigned long) &frame->sc;	/* a2: sigcontext pointer */
    wrusp((unsigned long) frame);

#if DEBUG_SIG
    printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
           current->comm, current->pid, frame, regs->pc, regs->r26);
#endif

    return;

give_sigsegv:
    if (sig == SIGSEGV)
        ka->sa.sa_handler = SIG_DFL;
    force_sig(SIGSEGV, current);
}
Esempio n. 16
0
static int
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
	       sigset_t *set, struct pt_regs *regs)
{
	unsigned long oldsp, r26, err = 0;
	struct rt_sigframe __user *frame;

	oldsp = rdusp();
	frame = get_sigframe(ka, oldsp, sizeof(*frame));
	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
		return -EFAULT;

	err |= copy_siginfo_to_user(&frame->info, info);

	/* Create the ucontext.  */
	err |= __put_user(0, &frame->uc.uc_flags);
	err |= __put_user(0, &frame->uc.uc_link);
	err |= __put_user(set->sig[0], &frame->uc.uc_osf_sigmask);
	err |= __save_altstack(&frame->uc.uc_stack, oldsp);
	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, 
				set->sig[0], oldsp);
	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
	if (err)
		return -EFAULT;

	/* Set up to return from userspace.  If provided, use a stub
	   already in userspace.  */
	if (ka->ka_restorer) {
		r26 = (unsigned long) ka->ka_restorer;
	} else {
		err |= __put_user(INSN_MOV_R30_R16, frame->retcode+0);
		err |= __put_user(INSN_LDI_R0+__NR_rt_sigreturn,
				  frame->retcode+1);
		err |= __put_user(INSN_CALLSYS, frame->retcode+2);
		imb();
		r26 = (unsigned long) frame->retcode;
	}

	if (err)
		return -EFAULT;

	/* "Return" to the handler */
	regs->r26 = r26;
	regs->r27 = regs->pc = (unsigned long) ka->sa.sa_handler;
	regs->r16 = sig;			  /* a0: signal number */
	regs->r17 = (unsigned long) &frame->info; /* a1: siginfo pointer */
	regs->r18 = (unsigned long) &frame->uc;	  /* a2: ucontext pointer */
	wrusp((unsigned long) frame);

#if DEBUG_SIG
	printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
		current->comm, current->pid, frame, regs->pc, regs->r26);
#endif

	return 0;
}
Esempio n. 17
0
/*
 * "alpha_clone()".. By the time we get here, the
 * non-volatile registers have also been saved on the
 * stack. We do some ugly pointer stuff here.. (see
 * also copy_thread)
 *
 * Notice that "fork()" is implemented in terms of clone,
 * with parameters (SIGCHLD, 0).
 */
int
alpha_clone(unsigned long clone_flags, unsigned long usp,
	    int __user *parent_tid, int __user *child_tid,
	    unsigned long tls_value, struct pt_regs *regs)
{
	if (!usp)
		usp = rdusp();

	return do_fork(clone_flags, usp, regs, 0, parent_tid, child_tid);
}
Esempio n. 18
0
int 
show_stack()
{
	unsigned long *sp = (unsigned long *)rdusp();
	int i;
	raw_printk("Stack dump [0x%08lx]:\n", (unsigned long)sp);
	for(i = 0; i < 16; i++)
		raw_printk("sp + %d: 0x%08lx\n", i*4, sp[i]);
	return 0;
}
Esempio n. 19
0
void show_regs(struct pt_regs *fp)
{
	char buf [150];

	printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\n");
	printk(KERN_NOTICE " SEQSTAT: %08lx  IPEND: %04lx  SYSCFG: %04lx\n",
		(long)fp->seqstat, fp->ipend, fp->syscfg);

	decode_address(buf, fp->rete);
	printk(KERN_NOTICE " RETE: %s\n", buf);
	decode_address(buf, fp->retn);
	printk(KERN_NOTICE " RETN: %s\n", buf);
	decode_address(buf, fp->retx);
	printk(KERN_NOTICE " RETX: %s\n", buf);
	decode_address(buf, fp->rets);
	printk(KERN_NOTICE " RETS: %s\n", buf);
	decode_address(buf, fp->pc);
	printk(KERN_NOTICE " PC: %s\n", buf);

	if ((long)fp->seqstat & SEQSTAT_EXCAUSE) {
		decode_address(buf, bfin_read_DCPLB_FAULT_ADDR());
		printk(KERN_NOTICE "DCPLB_FAULT_ADDR: %s\n", buf);
		decode_address(buf, bfin_read_ICPLB_FAULT_ADDR());
		printk(KERN_NOTICE "ICPLB_FAULT_ADDR: %s\n", buf);
	}

	printk(KERN_NOTICE "\n" KERN_NOTICE "PROCESSOR STATE:\n");
	printk(KERN_NOTICE " R0 : %08lx    R1 : %08lx    R2 : %08lx    R3 : %08lx\n",
		fp->r0, fp->r1, fp->r2, fp->r3);
	printk(KERN_NOTICE " R4 : %08lx    R5 : %08lx    R6 : %08lx    R7 : %08lx\n",
		fp->r4, fp->r5, fp->r6, fp->r7);
	printk(KERN_NOTICE " P0 : %08lx    P1 : %08lx    P2 : %08lx    P3 : %08lx\n",
		fp->p0, fp->p1, fp->p2, fp->p3);
	printk(KERN_NOTICE " P4 : %08lx    P5 : %08lx    FP : %08lx    SP : %08lx\n",
		fp->p4, fp->p5, fp->fp, (long)fp);
	printk(KERN_NOTICE " LB0: %08lx    LT0: %08lx    LC0: %08lx\n",
		fp->lb0, fp->lt0, fp->lc0);
	printk(KERN_NOTICE " LB1: %08lx    LT1: %08lx    LC1: %08lx\n",
		fp->lb1, fp->lt1, fp->lc1);
	printk(KERN_NOTICE " B0 : %08lx    L0 : %08lx    M0 : %08lx    I0 : %08lx\n",
		fp->b0, fp->l0, fp->m0, fp->i0);
	printk(KERN_NOTICE " B1 : %08lx    L1 : %08lx    M1 : %08lx    I1 : %08lx\n",
		fp->b1, fp->l1, fp->m1, fp->i1);
	printk(KERN_NOTICE " B2 : %08lx    L2 : %08lx    M2 : %08lx    I2 : %08lx\n",
		fp->b2, fp->l2, fp->m2, fp->i2);
	printk(KERN_NOTICE " B3 : %08lx    L3 : %08lx    M3 : %08lx    I3 : %08lx\n",
		fp->b3, fp->l3, fp->m3, fp->i3);
	printk(KERN_NOTICE "A0.w: %08lx   A0.x: %08lx   A1.w: %08lx   A1.x: %08lx\n",
		fp->a0w, fp->a0x, fp->a1w, fp->a1x);

	printk(KERN_NOTICE "USP : %08lx  ASTAT: %08lx\n",
		rdusp(), fp->astat);

	printk(KERN_NOTICE "\n");
}
Esempio n. 20
0
static int
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info,
	       sigset_t * set, struct pt_regs *regs)
{
	struct rt_sigframe *frame;
	int err = 0;

	frame = get_sigframe(ka, regs, sizeof(*frame));

	err |= __put_user((current_thread_info()->exec_domain
			   && current_thread_info()->exec_domain->signal_invmap
			   && sig < 32
			   ? current_thread_info()->exec_domain->
			   signal_invmap[sig] : sig), &frame->sig);

	err |= __put_user(&frame->info, &frame->pinfo);
	err |= __put_user(&frame->uc, &frame->puc);
	err |= copy_siginfo_to_user(&frame->info, info);

	/* Create the ucontext.  */
	err |= __put_user(0, &frame->uc.uc_flags);
	err |= __put_user(0, &frame->uc.uc_link);
	err |=
	    __put_user((void *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
	err |= __put_user(sas_ss_flags(rdusp()), &frame->uc.uc_stack.ss_flags);
	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
	err |= rt_setup_sigcontext(&frame->uc.uc_mcontext, regs);
	err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));

	if (err)
		goto give_sigsegv;

	/* Set up registers for signal handler */
	wrusp((unsigned long)frame);
	if (current->personality & FDPIC_FUNCPTRS) {
		struct fdpic_func_descriptor __user *funcptr =
			(struct fdpic_func_descriptor *) ka->sa.sa_handler;
		__get_user(regs->pc, &funcptr->text);
		__get_user(regs->p3, &funcptr->GOT);
	} else
		regs->pc = (unsigned long)ka->sa.sa_handler;
	regs->rets = SIGRETURN_STUB;

	regs->r0 = frame->sig;
	regs->r1 = (unsigned long)(&frame->info);
	regs->r2 = (unsigned long)(&frame->uc);

	return 0;

 give_sigsegv:
	if (sig == SIGSEGV)
		ka->sa.sa_handler = SIG_DFL;
	force_sig(SIGSEGV, current);
	return -EFAULT;
}
Esempio n. 21
0
static inline void __user *
get_sigframe(struct ksignal *ksig, size_t frame_size)
{
	unsigned long sp = sigsp(rdusp(), ksig);

	/* make sure the frame is dword-aligned */

	sp &= ~3;

	return (void __user*)(sp - frame_size);
}
Esempio n. 22
0
int
show_stack(void)
{
	unsigned long *sp = (unsigned long *)rdusp();
	int i;

	pr_err("Stack dump [0x%08lx]:\n", (unsigned long)sp);
	for (i = 0; i < 16; i++)
		pr_err("sp + %d: 0x%08lx\n", i*4, sp[i]);
	return 0;
}
Esempio n. 23
0
asmlinkage int h8300_clone(struct pt_regs *regs)
{
	unsigned long clone_flags;
	unsigned long newsp;

	/* syscall2 puts clone_flags in d1 and usp in d2 */
	clone_flags = regs->er1;
	newsp = regs->er2;
	if (!newsp)
	  newsp  = rdusp();
	return do_fork(clone_flags, newsp, regs);
}
Esempio n. 24
0
static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
			     unsigned long mask)
{
	sc->sc_mask = mask;
	sc->sc_usp = rdusp();
	sc->sc_er0 = regs->er0;
	sc->sc_er1 = regs->er1;
	sc->sc_er2 = regs->er2;
	sc->sc_er3 = regs->er3;
	sc->sc_er5 = regs->er5;
	sc->sc_ccr = regs->ccr;
	sc->sc_pc = regs->pc;
}
Esempio n. 25
0
static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
			  struct pt_regs *regs)
{
	struct rt_sigframe *frame;
	int err = 0;
	unsigned char *ret;

	frame = get_sigframe(ksig, regs, sizeof(*frame));

	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
		return -EFAULT;

	if (ksig->ka.sa.sa_flags & SA_SIGINFO)
		err |= copy_siginfo_to_user(&frame->info, &ksig->info);

	/* Create the ucontext.  */
	err |= __put_user(0, &frame->uc.uc_flags);
	err |= __put_user(0, &frame->uc.uc_link);
	err |= __save_altstack(&frame->uc.uc_stack, rdusp());
	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
	err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
	if (err)
		return -EFAULT;

	/* Set up to return from userspace.  */
	ret = frame->retcode;
	if (ksig->ka.sa.sa_flags & SA_RESTORER)
		ret = (unsigned char *)(ksig->ka.sa.sa_restorer);
	else {
		/* sub.l er0,er0; mov.b #__NR_rt_sigreturn,r0l; trapa #0 */
		err |= __put_user(0x1a80f800 + (__NR_rt_sigreturn & 0xff),
				  (unsigned long *)(frame->retcode + 0));
		err |= __put_user(0x5700,
				  (unsigned short *)(frame->retcode + 4));
	}
	err |= __put_user(ret, &frame->pretcode);

	if (err)
		return -EFAULT;

	/* Set up registers for signal handler */
	wrusp((unsigned long) frame);
	regs->pc  = (unsigned long) ksig->ka.sa.sa_handler;
	regs->er0 = ksig->sig;
	regs->er1 = (unsigned long)&(frame->info);
	regs->er2 = (unsigned long)&frame->uc;
	regs->er5 = current->mm->start_data;	/* GOT base */

	return 0;
}
Esempio n. 26
0
void show_regs(struct pt_regs * regs)
{
	printk("\n");
	printk("PC: %08lx  Status: %02x\n",
	       regs->pc, regs->ccr);
	printk("ORIG_ER0: %08lx ER0: %08lx ER1: %08lx\n",
	       regs->orig_er0, regs->er0, regs->er1);
	printk("ER2: %08lx ER3: %08lx  ER4: %08lx\n",
	       regs->er2, regs->er3, regs->er4);
	printk("ER5: %08lx ",
	       regs->er5);
	if (!(regs->ccr & 0x10))
		printk("USP: %08lx\n", rdusp());
}
Esempio n. 27
0
File: process.c Progetto: E-LLP/n900
asmlinkage int bfin_clone(struct pt_regs *regs)
{
	unsigned long clone_flags;
	unsigned long newsp;

	/* syscall2 puts clone_flags in r0 and usp in r1 */
	clone_flags = regs->r0;
	newsp = regs->r1;
	if (!newsp)
		newsp = rdusp();
	else
		newsp -= 12;
	return do_fork(clone_flags, newsp, regs, 0, NULL, NULL);
}
Esempio n. 28
0
void show_regs(struct pt_regs * regs)
{
    printk("\nPC: %08lx  Status: %02x",
           regs->pc, regs->ccr);
    printk("\nORIG_ER0: %08lx ER0: %08lx ER1: %08lx",
           regs->orig_er0, regs->er0, regs->er1);
    printk("\nER2: %08lx ER3: %08lx ER4: %08lx ER5: %08lx",
           regs->er2, regs->er3, regs->er4, regs->er5);
    printk("\nER6' %08lx ",regs->er6);
    if (user_mode(regs))
        printk("USP: %08lx\n", rdusp());
    else
        printk("\n");
}
Esempio n. 29
0
void show_regs(struct pt_regs * regs)
{
    unsigned long usp = rdusp();
    printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
           regs->irp, regs->srp, regs->dccr, usp, regs->mof );
    printk(" r0: %08lx  r1: %08lx   r2: %08lx  r3: %08lx\n",
           regs->r0, regs->r1, regs->r2, regs->r3);
    printk(" r4: %08lx  r5: %08lx   r6: %08lx  r7: %08lx\n",
           regs->r4, regs->r5, regs->r6, regs->r7);
    printk(" r8: %08lx  r9: %08lx  r10: %08lx r11: %08lx\n",
           regs->r8, regs->r9, regs->r10, regs->r11);
    printk("r12: %08lx r13: %08lx oR10: %08lx\n",
           regs->r12, regs->r13, regs->orig_r10);
}
Esempio n. 30
0
int
copy_thread(unsigned long clone_flags, unsigned long usp,
	unsigned long arg, struct task_struct *p)
{
	struct pt_regs *childregs = task_pt_regs(p);
	struct switch_stack *swstack = ((struct switch_stack *) childregs) - 1;

	/*
	 * Put the pt_regs structure at the end of the new kernel stack page and
	 * fix it up. Note: the task_struct doubles as the kernel stack for the
	 * task.
	 */
	if (unlikely(p->flags & PF_KTHREAD)) {
		memset(swstack, 0,
			sizeof(struct switch_stack) + sizeof(struct pt_regs));
		swstack->r1 = usp;
		swstack->r2 = arg;
		childregs->ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
		swstack->return_ip = (unsigned long) ret_from_kernel_thread;
		p->thread.ksp = (unsigned long) swstack;
		p->thread.usp = 0;
		return 0;
	}
	*childregs = *current_pt_regs();	/* Struct copy of pt_regs. */
        childregs->r10 = 0;	/* Child returns 0 after a fork/clone. */

	/* Set a new TLS ?
	 * The TLS is in $mof because it is the 5th argument to sys_clone.
	 */
	if (p->mm && (clone_flags & CLONE_SETTLS)) {
		task_thread_info(p)->tls = childregs->mof;
	}

	/* Put the switch stack right below the pt_regs. */

	/* Parameter to ret_from_sys_call. 0 is don't restart the syscall. */
	swstack->r9 = 0;

	/*
	 * We want to return into ret_from_sys_call after the _resume.
	 * ret_from_fork will call ret_from_sys_call.
	 */
	swstack->return_ip = (unsigned long) ret_from_fork;

	/* Fix the user-mode and kernel-mode stackpointer. */
	p->thread.usp = usp ?: rdusp();
	p->thread.ksp = (unsigned long) swstack;

	return 0;
}