signal.hpp

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// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
 
#include "mos/platform/platform.hpp"
#include "mos/tasks/task_types.hpp"
 
#include <mos/allocator.hpp>
#include <mos/lib/structures/list.hpp>
#include <mos/tasks/signal_types.h>
 
#define ERESTARTSYS 512


struct sigpending_t : mos::NamedType<"SigPending">
{
    as_linked_list;
    signal_t signal;
};

long signal_send_to_thread(Thread *target, signal_t signal);

long signal_send_to_process(Process *target, signal_t signal);

void signal_exit_to_user_prepare(platform_regs_t *regs);

void signal_exit_to_user_prepare_syscall(platform_regs_t *regs, reg_t syscall_nr, reg_t syscall_ret);
 
typedef struct _sigreturn_data
{
    signal_t signal;
    bool was_masked;
} sigreturn_data_t;

void signal_on_returned(sigreturn_data_t *supplimentary_data);

bool signal_has_pending(void);