Luna/kernel/src/thread/Task.cpp

#include "thread/Task.h"
#include "std/string.h"

void set_context_from_task(Task& task, Context* ctx)
{
    memcpy(ctx, &task.regs, sizeof(Context));
}

void get_context_to_task(Task& task, Context* ctx)
{
    memcpy(&task.regs, ctx, sizeof(Context));
}

void task_save_floating(Task& task)
{
    task.floating_saved = true;
    asm volatile("fxsave (%0)" : : "r"(&task.floating_region));
}

void task_restore_floating(Task& task)
{
    if (!task.floating_saved) return;
    asm volatile("fxrstor (%0)" : : "r"(&task.floating_region));
}

bool Task::is_user_task()
{
    return user_task;
}

int Task::alloc_fd()
{
    int fd;
    for (fd = 0; fd < TASK_MAX_FDS; fd++)
    {
        if (!files[fd].is_open()) break;
    }

    if (fd == TASK_MAX_FDS) { return -1; }

    return fd;
}