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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/*
* hipe_load.c
*
* HiPE atomic code loader
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "sys.h"
#include "global.h"
#include "erl_binary.h"
#include "hipe_load.h"
/*
* This destructor function can safely be called multiple times.
*/
static void
hipe_loader_state_dtor(Binary* magic)
{
HipeLoaderState* stp = ERTS_MAGIC_BIN_DATA(magic);
if (stp->module == NIL) return;
erts_fprintf(stderr, "Destroying HiPE loader state for module %T\n",
stp->module);
// TODO: Needs to be freed separately. We'd like have a unified executable
// code allocator, so postpone this for now.
/* if (stp->text_segment) */
/* erts_free(ERTS_ALC_T_HIPE, stp->text_segment); */
stp->text_segment = NULL;
stp->text_segment_size = 0;
if (stp->data_segment)
erts_free(ERTS_ALC_T_HIPE, stp->data_segment);
stp->data_segment = NULL;
stp->data_segment_size = 0;
stp->module = NIL;
ASSERT(!stp->new_hipe_refs && !stp->new_hipe_sdesc);
/* ToDO: Purge lists 'new_hipe_refs' and 'new_hipe_sdesc'
* if this is a failed load.
*/
}
Binary *hipe_alloc_loader_state(Eterm module)
{
HipeLoaderState *stp;
Binary *magic;
if (is_not_atom(module)) return NULL;
erts_fprintf(stderr, "Creating HiPE loader state for module %T\n", module);
magic = erts_create_magic_binary(sizeof(HipeLoaderState),
hipe_loader_state_dtor);
erts_refc_inc(&magic->refc, 1);
stp = ERTS_MAGIC_BIN_DATA(magic);
stp->module = module;
stp->text_segment = NULL;
stp->text_segment_size = 0;
stp->data_segment = NULL;
stp->data_segment_size = 0;
stp->new_hipe_refs = NULL;
stp->new_hipe_sdesc = NULL;
return magic;
}
void hipe_free_loader_state(Binary *magic)
{
if (ERTS_MAGIC_BIN_DESTRUCTOR(magic) != hipe_loader_state_dtor)
return;
/* Why does BEAM do a refc_dec here? What is holding that reference? */
hipe_loader_state_dtor(magic);
}
HipeLoaderState *
hipe_get_loader_state(Binary *magic)
{
if (ERTS_MAGIC_BIN_DESTRUCTOR(magic) != hipe_loader_state_dtor)
return NULL;
return (HipeLoaderState*) ERTS_MAGIC_BIN_DATA(magic);
}
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