factory.h

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/*
 * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
 *               Alexander Warg <warg@os.inf.tu-dresden.de>,
 *               Björn Döbel <doebel@os.inf.tu-dresden.de>,
 *               Torsten Frenzel <frenzel@os.inf.tu-dresden.de>,
 *               Henning Schild <hschild@os.inf.tu-dresden.de>
 *     economic rights: Technische Universität Dresden (Germany)
 *
 * License: see LICENSE.spdx (in this directory or the directories above)
 */
#pragma once
 
#include <l4/sys/compiler.h>
#include <l4/sys/types.h>
#include <l4/sys/utcb.h>
 
L4_INLINE l4_msgtag_t
l4_factory_create_task(l4_cap_idx_t factory, l4_cap_idx_t target_cap,
                       l4_fpage_t *utcb_area) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_task_u(l4_cap_idx_t factory, l4_cap_idx_t target_cap,
                         l4_fpage_t *utcb_area, l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread(l4_cap_idx_t factory,
                         l4_cap_idx_t target_cap) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread_u(l4_cap_idx_t factory,
                           l4_cap_idx_t target_cap, l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_factory(l4_cap_idx_t factory, l4_cap_idx_t target_cap,
                          unsigned long limit) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_factory_u(l4_cap_idx_t factory, l4_cap_idx_t target_cap,
                            unsigned long limit, l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_gate(l4_cap_idx_t factory,
                       l4_cap_idx_t target_cap,
                       l4_cap_idx_t snd_dst_cap, l4_umword_t label) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_gate_u(l4_cap_idx_t factory,
                         l4_cap_idx_t target_cap,
                         l4_cap_idx_t snd_dst_cap, l4_umword_t label,
                         l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_irq(l4_cap_idx_t factory,
                      l4_cap_idx_t target_cap) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_irq_u(l4_cap_idx_t factory,
                        l4_cap_idx_t target_cap, l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_vm(l4_cap_idx_t factory,
                     l4_cap_idx_t target_cap) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_vcpu_context(l4_cap_idx_t factory,
                               l4_cap_idx_t target_cap) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread_group(l4_cap_idx_t factory,
                               l4_cap_idx_t target_cap,
                               unsigned policy) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_vm_u(l4_cap_idx_t factory,
                       l4_cap_idx_t target_cap, l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_vcpu_context_u(l4_cap_idx_t factory,
                                 l4_cap_idx_t target_cap,
                                 l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread_group_u(l4_cap_idx_t factory,
                                 l4_cap_idx_t target_cap,
                                 unsigned policy,
                                 l4_utcb_t *u) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_start_u(long obj, l4_cap_idx_t target,
                          l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE int
l4_factory_create_add_fpage_u(l4_fpage_t d, l4_msgtag_t *tag,
                              l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE int
l4_factory_create_add_int_u(l4_mword_t d, l4_msgtag_t *tag,
                            l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE int
l4_factory_create_add_uint_u(l4_umword_t d, l4_msgtag_t *tag,
                            l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE int
l4_factory_create_add_str_u(char const *s, l4_msgtag_t *tag,
                            l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE int
l4_factory_create_add_lstr_u(char const *s, unsigned len, l4_msgtag_t *tag,
                             l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE int
l4_factory_create_add_nil_u(l4_msgtag_t *tag, l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_commit_u(l4_cap_idx_t factory, l4_msgtag_t tag,
                           l4_utcb_t *utcb) L4_NOTHROW;
 
L4_INLINE l4_msgtag_t
l4_factory_create_u(l4_cap_idx_t factory, long obj, l4_cap_idx_t target,
                    l4_utcb_t *utcb) L4_NOTHROW;
 
 
L4_INLINE l4_msgtag_t
l4_factory_create(l4_cap_idx_t factory, long obj,
                  l4_cap_idx_t target) L4_NOTHROW;
 
/* IMPLEMENTATION -----------------------------------------------------------*/
 
#include <l4/sys/ipc.h>
 
L4_INLINE l4_msgtag_t
l4_factory_create_task_u(l4_cap_idx_t factory,
                         l4_cap_idx_t target_cap, l4_fpage_t *utcb_area,
                         l4_utcb_t *u) L4_NOTHROW
{
  l4_msgtag_t t;
  t = l4_factory_create_start_u(L4_PROTO_TASK, target_cap, u);
  l4_factory_create_add_fpage_u(*utcb_area, &t, u);
  t = l4_factory_create_commit_u(factory, t, u);
  if (!l4_msgtag_has_error(t))
    {
      l4_msg_regs_t *v = l4_utcb_mr_u(u);
      utcb_area->raw = v->mr[0];
    }
  return t;
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread_u(l4_cap_idx_t factory,
                           l4_cap_idx_t target_cap, l4_utcb_t *u) L4_NOTHROW
{
  return l4_factory_create_u(factory, L4_PROTO_THREAD, target_cap, u);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_factory_u(l4_cap_idx_t factory,
                            l4_cap_idx_t target_cap, unsigned long limit,
                            l4_utcb_t *u) L4_NOTHROW
{
  l4_msgtag_t t;
  t = l4_factory_create_start_u(L4_PROTO_FACTORY, target_cap, u);
  l4_factory_create_add_uint_u(limit, &t, u);
  return l4_factory_create_commit_u(factory, t, u);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_gate_u(l4_cap_idx_t factory,
                         l4_cap_idx_t target_cap,
                         l4_cap_idx_t snd_dst_cap, l4_umword_t label,
                         l4_utcb_t *u) L4_NOTHROW
{
  l4_msgtag_t t;
  l4_msg_regs_t *v;
  int items = 0;
  t = l4_factory_create_start_u(0, target_cap, u);
  l4_factory_create_add_uint_u(label, &t, u);
  v = l4_utcb_mr_u(u);
  if (!(snd_dst_cap & L4_INVALID_CAP_BIT))
    {
      items = 1;
      v->mr[3] = l4_map_obj_control(0,0);
      v->mr[4] = l4_obj_fpage(snd_dst_cap, 0, L4_CAP_FPAGE_RWS).raw;
    }
  t = l4_msgtag(l4_msgtag_label(t), l4_msgtag_words(t), items, l4_msgtag_flags(t));
  return l4_factory_create_commit_u(factory, t, u);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_irq_u(l4_cap_idx_t factory,
                        l4_cap_idx_t target_cap, l4_utcb_t *u) L4_NOTHROW
{
  return l4_factory_create_u(factory, L4_PROTO_IRQ_SENDER, target_cap, u);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_vm_u(l4_cap_idx_t factory,
                       l4_cap_idx_t target_cap,
                       l4_utcb_t *u) L4_NOTHROW
{
  return l4_factory_create_u(factory, L4_PROTO_VM, target_cap, u);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_vcpu_context_u(l4_cap_idx_t factory,
                                 l4_cap_idx_t target_cap,
                                 l4_utcb_t *u) L4_NOTHROW
{
  return l4_factory_create_u(factory, L4_PROTO_VCPU_CONTEXT, target_cap, u);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread_group_u(l4_cap_idx_t factory,
                                 l4_cap_idx_t target_cap,
                                 unsigned policy,
                                 l4_utcb_t *u) L4_NOTHROW
{
  l4_msgtag_t t = l4_factory_create_start_u(L4_PROTO_THREAD_GROUP, target_cap, u);
  l4_factory_create_add_uint_u(policy, &t, u);
  return l4_factory_create_commit_u(factory, t, u);
}
 
 
L4_INLINE l4_msgtag_t
l4_factory_create_task(l4_cap_idx_t factory,
                       l4_cap_idx_t target_cap, l4_fpage_t *utcb_area) L4_NOTHROW
{
  return l4_factory_create_task_u(factory, target_cap, utcb_area, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread(l4_cap_idx_t factory,
                         l4_cap_idx_t target_cap) L4_NOTHROW
{
  return l4_factory_create_thread_u(factory, target_cap, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_factory(l4_cap_idx_t factory,
                          l4_cap_idx_t target_cap, unsigned long limit) L4_NOTHROW
 
{
  return l4_factory_create_factory_u(factory, target_cap, limit, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_gate(l4_cap_idx_t factory,
                       l4_cap_idx_t target_cap,
                       l4_cap_idx_t snd_dst_cap, l4_umword_t label) L4_NOTHROW
{
  return l4_factory_create_gate_u(factory, target_cap, snd_dst_cap, label, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_irq(l4_cap_idx_t factory,
                      l4_cap_idx_t target_cap) L4_NOTHROW
{
  return l4_factory_create_irq_u(factory, target_cap, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_vm(l4_cap_idx_t factory,
                     l4_cap_idx_t target_cap) L4_NOTHROW
{
  return l4_factory_create_vm_u(factory, target_cap, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_vcpu_context(l4_cap_idx_t factory,
                               l4_cap_idx_t target_cap) L4_NOTHROW
{
  return l4_factory_create_vcpu_context_u(factory, target_cap, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_thread_group(l4_cap_idx_t factory,
                               l4_cap_idx_t target_cap,
                               unsigned policy) L4_NOTHROW
{
  return l4_factory_create_thread_group_u(factory, target_cap, policy, l4_utcb());
}
 
 
L4_INLINE l4_msgtag_t
l4_factory_create_start_u(long obj, l4_cap_idx_t target_cap,
                          l4_utcb_t *u) L4_NOTHROW
{
  l4_msg_regs_t *v = l4_utcb_mr_u(u);
  l4_buf_regs_t *b = l4_utcb_br_u(u);
  v->mr[0] = obj;
  b->bdr = 0;
  b->br[0] = target_cap | L4_RCV_ITEM_SINGLE_CAP;
  return l4_msgtag(L4_PROTO_FACTORY, 1, 0, 0);
}
 
L4_INLINE int
l4_factory_create_add_fpage_u(l4_fpage_t d, l4_msgtag_t *tag,
                              l4_utcb_t *u) L4_NOTHROW
{
  l4_msg_regs_t *v = l4_utcb_mr_u(u);
  int w = l4_msgtag_words(*tag);
  if (w + 2 > L4_UTCB_GENERIC_DATA_SIZE)
    return 0;
  v->mr[w] = L4_VARG_TYPE_FPAGE | (sizeof(l4_fpage_t) << 16);
  v->mr[w + 1] = d.raw;
  w += 2;
  tag->raw = (tag->raw & ~0x3fUL) | (w & 0x3f);
  return 1;
}
 
L4_INLINE int
l4_factory_create_add_int_u(l4_mword_t d, l4_msgtag_t *tag,
                            l4_utcb_t *u) L4_NOTHROW
{
  l4_msg_regs_t *v = l4_utcb_mr_u(u);
  int w = l4_msgtag_words(*tag);
  if (w + 2 > L4_UTCB_GENERIC_DATA_SIZE)
    return 0;
  v->mr[w] = L4_VARG_TYPE_MWORD | (sizeof(l4_mword_t) << 16);
  v->mr[w + 1] = d;
  w += 2;
  tag->raw = (tag->raw & ~0x3fUL) | (w & 0x3f);
  return 1;
}
 
L4_INLINE int
l4_factory_create_add_uint_u(l4_umword_t d, l4_msgtag_t *tag,
                             l4_utcb_t *u) L4_NOTHROW
{
  l4_msg_regs_t *v = l4_utcb_mr_u(u);
  int w = l4_msgtag_words(*tag);
  if (w + 2 > L4_UTCB_GENERIC_DATA_SIZE)
    return 0;
  v->mr[w] = L4_VARG_TYPE_UMWORD | (sizeof(l4_umword_t) << 16);
  v->mr[w + 1] = d;
  w += 2;
  tag->raw = (tag->raw & ~0x3fUL) | (w & 0x3f);
  return 1;
}
 
L4_INLINE int
l4_factory_create_add_str_u(char const *s, l4_msgtag_t *tag,
                            l4_utcb_t *u) L4_NOTHROW
{
  return l4_factory_create_add_lstr_u(s, __builtin_strlen(s) + 1, tag, u);
}
 
L4_INLINE int
l4_factory_create_add_lstr_u(char const *s, unsigned len, l4_msgtag_t *tag,
                             l4_utcb_t *u) L4_NOTHROW
{
 
  l4_msg_regs_t *v = l4_utcb_mr_u(u);
  unsigned w = l4_msgtag_words(*tag);
  char *c;
  unsigned i;
 
  if (w + 1 + l4_bytes_to_mwords(len) > L4_UTCB_GENERIC_DATA_SIZE)
    return 0;
 
  v->mr[w] = L4_VARG_TYPE_STRING | (len << 16);
  c = (char*)&v->mr[w + 1];
  for (i = 0; i < len; ++i)
    *c++ = *s++;
 
  w = w + 1 + l4_bytes_to_mwords(len);
 
  tag->raw = (tag->raw & ~0x3fUL) | (w & 0x3f);
  return 1;
}
 
L4_INLINE int
l4_factory_create_add_nil_u(l4_msgtag_t *tag, l4_utcb_t *utcb) L4_NOTHROW
{
  l4_msg_regs_t *v = l4_utcb_mr_u(utcb);
  int w = l4_msgtag_words(*tag);
  v->mr[w] = L4_VARG_TYPE_NIL;
  ++w;
  tag->raw = (tag->raw & ~0x3fUL) | (w & 0x3f);
  return 1;
}
 
 
L4_INLINE l4_msgtag_t
l4_factory_create_commit_u(l4_cap_idx_t factory, l4_msgtag_t tag,
                           l4_utcb_t *u) L4_NOTHROW
{
  return l4_ipc_call(factory, u, tag, L4_IPC_NEVER);
}
 
L4_INLINE l4_msgtag_t
l4_factory_create_u(l4_cap_idx_t factory, long obj, l4_cap_idx_t target,
                    l4_utcb_t *utcb) L4_NOTHROW
{
  l4_msgtag_t t = l4_factory_create_start_u(obj, target, utcb);
  return l4_factory_create_commit_u(factory, t, utcb);
}
 
 
L4_INLINE l4_msgtag_t
l4_factory_create(l4_cap_idx_t factory, long obj,
                  l4_cap_idx_t target) L4_NOTHROW
{
  return l4_factory_create_u(factory, obj, target, l4_utcb());
}