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75 lines (68 loc) · 3.11 KB
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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef __MICROPY_INCLUDED_PY_BC_H__
#define __MICROPY_INCLUDED_PY_BC_H__
#include "py/runtime.h"
#include "py/obj.h"
// Exception stack entry
typedef struct _mp_exc_stack {
const byte *handler;
// bit 0 is saved currently_in_except_block value
// bit 1 is whether the opcode was SETUP_WITH or SETUP_FINALLY
mp_obj_t *val_sp;
// Saved exception, valid if currently_in_except_block bit is 1
mp_obj_t prev_exc;
} mp_exc_stack_t;
typedef struct _mp_code_state {
const byte *code_info;
const byte *ip;
mp_obj_t *sp;
// bit 0 is saved currently_in_except_block value
mp_exc_stack_t *exc_sp;
mp_obj_dict_t *old_globals;
#if MICROPY_STACKLESS
struct _mp_code_state *prev;
#endif
mp_uint_t n_state;
// Variable-length
mp_obj_t state[0];
// Variable-length, never accessed by name, only as (void*)(state + n_state)
//mp_exc_stack_t exc_state[0];
} mp_code_state;
mp_uint_t mp_decode_uint(const byte **ptr);
mp_vm_return_kind_t mp_execute_bytecode(mp_code_state *code_state, volatile mp_obj_t inject_exc);
mp_code_state *mp_obj_fun_bc_prepare_codestate(mp_obj_t func, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args);
void mp_setup_code_state(mp_code_state *code_state, mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args);
void mp_bytecode_print(const void *descr, mp_uint_t n_total_args, const byte *code, mp_uint_t len);
void mp_bytecode_print2(const byte *code, mp_uint_t len);
const byte *mp_bytecode_print_str(const byte *ip);
#define mp_bytecode_print_inst(code) mp_bytecode_print2(code, 1)
// Helper macros to access pointer with least significant bits holding flags
#define MP_TAGPTR_PTR(x) ((void*)((mp_uint_t)(x) & ~((mp_uint_t)3)))
#define MP_TAGPTR_TAG0(x) ((mp_uint_t)(x) & 1)
#define MP_TAGPTR_TAG1(x) ((mp_uint_t)(x) & 2)
#define MP_TAGPTR_MAKE(ptr, tag) ((void*)((mp_uint_t)(ptr) | (tag)))
#endif // __MICROPY_INCLUDED_PY_BC_H__