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#ifndef SCM_JIT_H
#define SCM_JIT_H
/* Copyright 2018-2019
Free Software Foundation, Inc.
This file is part of Guile.
Guile 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 3 of the License, or
(at your option) any later version.
Guile 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 Guile. If not, see
<https://www.gnu.org/licenses/>. */
#include "libguile/scm.h"
struct scm_jit_function_data;
struct scm_jit_state;
#ifdef BUILDING_LIBGUILE
struct scm_jit_function_data
{
uint8_t *mcode;
uint32_t counter;
int32_t start;
int32_t end;
#if SCM_SIZEOF_UINTPTR_T == 4
#elif SCM_SIZEOF_UINTPTR_T == 8
uint32_t pad;
#else
#error unhandled sizeof(uintptr_t)
#endif
};
/* These values should be even, so that a function's counter is never
0xffffffff, so that setting the JIT threshold to 0xffffffff always
disables compilation. */
enum scm_jit_counter_value
{
SCM_JIT_COUNTER_ENTRY_INCREMENT = 30,
SCM_JIT_COUNTER_LOOP_INCREMENT = 2,
};
#endif
SCM_INTERNAL uint32_t scm_jit_counter_threshold;
SCM_INTERNAL const uint8_t *scm_jit_compute_mcode (scm_thread *thread,
struct scm_jit_function_data *data);
SCM_INTERNAL void scm_jit_enter_mcode (scm_thread *thread,
const uint8_t *mcode);
SCM_INTERNAL void scm_jit_state_free (struct scm_jit_state *j);
SCM_INTERNAL void *scm_jit_return_to_interpreter_trampoline;
SCM_INTERNAL void scm_jit_clear_mcode_return_addresses (scm_thread *thread);
SCM_INTERNAL void scm_init_jit (void);
#endif /* SCM_JIT_H */
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