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/* startup.h - Interface for starting a new program.
Copyright (C) 2004, 2007 Free Software Foundation, Inc.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _HURD_STARTUP_H
#define _HURD_STARTUP_H 1
#include <stdint.h>
#include <stddef.h>
#include <hurd/types.h>
#include <viengoos/addr.h>
#ifdef USE_L4
# include <l4/types.h>
#endif
/* The version of the startup data defined by this header file. */
#define HURD_STARTUP_VERSION_MAJOR UINT16_C (0)
#define HURD_STARTUP_VERSION_MINOR UINT16_C (0)
/* Hurd object descriptors are used as a way to provide a map of its
layout to a new task. */
struct hurd_object_desc
{
/* The object. */
vg_addr_t object;
/* If the object is not a folio, then: */
/* The location of the storage. (vg_addr_chop (STORAGE,
VG_FOLIO_OBJECTS_LOG2) => the folio.) */
vg_addr_t storage;
/* The type of the object (for convenience). */
unsigned char type;
};
/* A program's startup data. When a program is started, the address
is in the program's SP. */
struct hurd_startup_data
{
/* The version fields. All versions with the same major version are
compatible. */
unsigned short version_major;
unsigned short version_minor;
/* Startup flags. */
uintptr_t flags;
#ifdef USE_L4
/* The UTCB area of this task. */
l4_fpage_t utcb_area;
/* Thread id of Viengoos. */
l4_thread_id_t rm;
#endif
/* The argument vector. */
char *argz;
/* Absolute address in the data space. */
size_t argz_len;
/* The environment vector. */
char *envz;
/* Absolute address in the data space. */
size_t envz_len;
/* Slot in which a capability designating the task's primary
activity is stored. */
vg_addr_t activity;
/* Slot in which a capability designating the task's first thread is
stored. */
vg_addr_t thread;
/* To allow a task to boot strap itself, it needs a couple of
messengers (one to send and another to receive). Here they
are. */
vg_addr_t messengers[2];
struct hurd_object_desc *descs;
int desc_count;
/* The program header. */
void *phdr;
size_t phdr_len;
};
#endif /* _HURD_STARTUP_H */
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