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 * Points to the binary image used as the program loader. All non-initial
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 * Points to the binary image used as the program loader. All non-initial
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 * tasks are created from this executable image.
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 * tasks are created from this executable image.
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 */
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 */
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void *program_loader = NULL;
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void *program_loader = NULL;
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/** Create new task with 1 thread and run it
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/** Create a program using an existing address space.
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 *
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 *
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 * @param as Address space containing a binary program image.
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 * @param as        Address space containing a binary program image.
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 * @param entry_addr Program entry-point address in program address space.
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 * @param entry_addr    Program entry-point address in program address space.
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 * @param name Program name.
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 *
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 * @return Task of the running program or NULL on error.
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 * @param p     Buffer for storing program information.
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 */
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 */
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void program_create(as_t *as, uintptr_t entry_addr, program_t *p)
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void program_create(as_t *as, uintptr_t entry_addr, program_t *p)
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{
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{
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    as_area_t *a;
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    as_area_t *a;
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    uspace_arg_t *kernel_uarg;
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    uspace_arg_t *kernel_uarg;
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    p->main_thread = thread_create(uinit, kernel_uarg, p->task,
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    p->main_thread = thread_create(uinit, kernel_uarg, p->task,
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        THREAD_FLAG_USPACE, "uinit", false);
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        THREAD_FLAG_USPACE, "uinit", false);
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    ASSERT(p->main_thread);
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    ASSERT(p->main_thread);
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}
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}
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/** Parse an executable image in the physical memory.
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/** Parse an executable image in the kernel memory.
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 *
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 *
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 * If the image belongs to a program loader, it is registered as such,
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 * If the image belongs to a program loader, it is registered as such,
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 * (and *task is set to NULL). Otherwise a task is created from the
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 * (and *task is set to NULL). Otherwise a task is created from the
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 * executable image. The task is returned in *task.
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 * executable image. The task is returned in *task.
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 *
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 *
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 * @param program_addr Address of program executable image.
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 * @param image_addr    Address of an executable program image.
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 * @param name Program name.
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 * @param p     Buffer for storing program info. If image_addr
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 * @param task Where to store the pointer to the newly created task.
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 *          points to a loader image, p->task will be set to
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 *          NULL and EOK will be returned.
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 *
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 *
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 * @return EOK on success or negative error code.
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 * @return EOK on success or negative error code.
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 */
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 */
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int program_create_from_image(void *image_addr, program_t *p)
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int program_create_from_image(void *image_addr, program_t *p)
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{
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{
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    return EOK;
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    return EOK;
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}
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}
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/** Create a task from the program loader image.
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/** Create a task from the program loader image.
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 *
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 *
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 * @param name Program name.
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 * @param t Buffer for storing pointer to the newly created task.
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 * @param p Buffer for storing program info.
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 *
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 * @return Task of the running program or NULL on error.
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 * @return EOK on success or negative error code.
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 */
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 */
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int program_create_loader(program_t *p)
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int program_create_loader(program_t *p)
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{
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{
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    as_t *as;
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    as_t *as;
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    unsigned int rc;
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    unsigned int rc;
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    program_create(as, ((elf_header_t *) program_loader)->e_entry, p);
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    program_create(as, ((elf_header_t *) program_loader)->e_entry, p);
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    return EOK;
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    return EOK;
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}
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}
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/** Make task ready.
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/** Make program ready.
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 *
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 *
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 * Switch task's thread to the ready state.
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 * Switch program's main thread to the ready state.
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 *
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 *
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 * @param ta Task to make ready.
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 * @param p Program to make ready.
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 */
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 */
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void program_ready(program_t *p)
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void program_ready(program_t *p)
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{
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{
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    thread_ready(p->main_thread);
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    thread_ready(p->main_thread);
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}
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}
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/** Syscall for creating a new task from userspace.
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/** Syscall for creating a new loader instance from userspace.
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 *
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 *
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 * Creates a new task from the program loader image, connects a phone
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 * Creates a new task from the program loader image, connects a phone
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 * to it and stores the phone id into the provided buffer.
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 * to it and stores the phone id into the provided buffer.
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 *
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 *
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 * @param uspace_phone_id Userspace address where to store the phone id.
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 * @param uspace_phone_id Userspace address where to store the phone id.