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