69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/cris/kernel/ptrace.c
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*
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* Parts taken from the m68k port.
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*
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* Copyright (c) 2000, 2001, 2002 Axis Communications AB
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*
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* Authors: Bjorn Wesen
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*
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/smp.h>
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#include <linux/errno.h>
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#include <linux/ptrace.h>
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#include <linux/user.h>
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#include <linux/tracehook.h>
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#include <linux/uaccess.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/processor.h>
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/* notification of userspace execution resumption
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* - triggered by current->work.notify_resume
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*/
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extern int do_signal(int canrestart, struct pt_regs *regs);
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void do_notify_resume(int canrestart, struct pt_regs *regs,
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__u32 thread_info_flags)
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{
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/* deal with pending signal delivery */
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if (thread_info_flags & _TIF_SIGPENDING)
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do_signal(canrestart,regs);
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if (thread_info_flags & _TIF_NOTIFY_RESUME) {
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clear_thread_flag(TIF_NOTIFY_RESUME);
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tracehook_notify_resume(regs);
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}
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}
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void do_work_pending(int syscall, struct pt_regs *regs,
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unsigned int thread_flags)
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{
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do {
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if (likely(thread_flags & _TIF_NEED_RESCHED)) {
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schedule();
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} else {
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if (unlikely(!user_mode(regs)))
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return;
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local_irq_enable();
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if (thread_flags & _TIF_SIGPENDING) {
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do_signal(syscall, regs);
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syscall = 0;
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} else {
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clear_thread_flag(TIF_NOTIFY_RESUME);
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tracehook_notify_resume(regs);
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}
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}
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local_irq_disable();
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thread_flags = current_thread_info()->flags;
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} while (thread_flags & _TIF_WORK_MASK);
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}
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