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C++ rdusp函数代码示例

本文整理汇总了C++中rdusp函数的典型用法代码示例。如果您正苦于以下问题：C++ rdusp函数的具体用法？C++ rdusp怎么用？C++ rdusp使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了rdusp函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: sys_rt_sigreturn

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;
}
开发者ID:Blackburn29，项目名称:PsycoKernel，代码行数:32，代码来源:signal.c

示例2: sys_rt_sigreturn

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;
}
开发者ID:4atty，项目名称:linux，代码行数:33，代码来源:signal.c

示例3: dump_thread

/*
 * 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);
}
开发者ID:12019，项目名称:hg556a_source，代码行数:60，代码来源:process.c

示例4: sys_sigreturn

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;
}
开发者ID:Blackburn29，项目名称:PsycoKernel，代码行数:34，代码来源:signal.c

示例5: vmadump_store_cpu

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;
}
开发者ID:rminnich，项目名称:clustermatic，代码行数:33，代码来源:vmadump_alpha.c

示例6: do_rt_sigreturn

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;
}
开发者ID:Korn1699，项目名称:linux，代码行数:28，代码来源:signal.c

示例7: do_rt_sigreturn

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;
}
开发者ID:kzlin129，项目名称:tt-gpl，代码行数:31，代码来源:signal.c

示例8: do_sigreturn

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;
}
开发者ID:kzlin129，项目名称:tt-gpl，代码行数:30，代码来源:signal.c

示例9: alpha_clone

/*
 * "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));
}
开发者ID:liexusong，项目名称:linux2.0-comment，代码行数:16，代码来源:process.c

示例10: sys_sigreturn

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;
}
开发者ID:0-T-0，项目名称:ps4-linux，代码行数:35，代码来源:signal.c

示例11: sys_rt_sigreturn

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;
}
开发者ID:0-T-0，项目名称:ps4-linux，代码行数:26，代码来源:signal.c

示例12: rt_setup_sigcontext

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;
}
开发者ID:Korn1699，项目名称:linux，代码行数:29，代码来源:signal.c

示例13: do_sigreturn

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;
}
开发者ID:7L，项目名称:pi_plus，代码行数:26，代码来源:signal.c

示例14: sys_clone

/* 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);
}
开发者ID:openube，项目名称:android_kernel_sony_c2305，代码行数:9，代码来源:process.c

示例15: setup_frame

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);
}
开发者ID:dot-Sean，项目名称:linux_kernels，代码行数:56，代码来源:signal.c


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