/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1996-2018. 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%
*/
#ifndef __EXPORT_H__
#define __EXPORT_H__
#include "sys.h"
#include "index.h"
#include "code_ix.h"
/*
** Export entry
*/
typedef struct export
{
void* addressv[ERTS_NUM_CODE_IX]; /* Pointer to code for function. */
ErtsCodeInfo info; /* MUST be just before beam[] */
/*
* beam[0]: This entry is 0 unless the 'addressv' field points to it.
* Threaded code instruction to load function
* (em_call_error_handler), execute BIF (em_apply_bif),
* or a breakpoint instruction (op_i_generic_breakpoint).
* beam[1]: Function pointer to BIF function (for BIFs only),
* or pointer to threaded code if the module has an
* on_load function that has not been run yet, or pointer
* to code if function beam[0] is a breakpoint instruction.
* Otherwise: 0.
*/
BeamInstr beam[2];
} Export;
void init_export_table(void);
void export_info(fmtfn_t, void *);
ERTS_GLB_INLINE Export* erts_active_export_entry(Eterm m, Eterm f, unsigned a);
Export* erts_export_put(Eterm mod, Eterm func, unsigned int arity);
Export* erts_export_get_or_make_stub(Eterm, Eterm, unsigned);
Export *export_list(int,ErtsCodeIndex);
int export_list_size(ErtsCodeIndex);
int export_table_sz(void);
int export_entries_sz(void);
Export *export_get(Export*);
void export_start_staging(void);
void export_end_staging(int commit);
extern erts_mtx_t export_staging_lock;
#define export_staging_lock() erts_mtx_lock(&export_staging_lock)
#define export_staging_unlock() erts_mtx_unlock(&export_staging_lock)
#include "beam_load.h" /* For em_* extern declarations */
#define ExportIsBuiltIn(EntryPtr) \
(((EntryPtr)->addressv[erts_active_code_ix()] == (EntryPtr)->beam) && \
(BeamIsOpCode((EntryPtr)->beam[0], op_apply_bif)))
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE Export*
erts_active_export_entry(Eterm m, Eterm f, unsigned int a)
{
extern Export* erts_find_export_entry(Eterm m, Eterm f, unsigned a, ErtsCodeIndex);
return erts_find_export_entry(m, f, a, erts_active_code_ix());
}
#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
#endif /* __EXPORT_H__ */
