123 lines
4.9 KiB
C
123 lines
4.9 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 Damien P. George
|
|
* Copyright (c) 2014 Paul Sokolovsky
|
|
*
|
|
* 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/objfun.h"
|
|
|
|
// bytecode layout:
|
|
//
|
|
// n_state : var uint
|
|
// n_exc_stack : var uint
|
|
// scope_flags : byte
|
|
// n_pos_args : byte number of arguments this function takes
|
|
// n_kwonly_args : byte number of keyword-only arguments this function takes
|
|
// n_def_pos_args : byte number of default positional arguments
|
|
//
|
|
// code_info_size : var uint | code_info_size counts bytes in this chunk
|
|
// simple_name : var qstr |
|
|
// source_file : var qstr |
|
|
// <line number info> |
|
|
// <word alignment padding> | only needed if bytecode contains pointers
|
|
//
|
|
// local_num0 : byte |
|
|
// ... : byte |
|
|
// local_numN : byte | N = num_cells
|
|
// 255 : byte | end of list sentinel
|
|
// <bytecode> |
|
|
//
|
|
//
|
|
// constant table layout:
|
|
//
|
|
// argname0 : obj (qstr)
|
|
// ... : obj (qstr)
|
|
// argnameN : obj (qstr) N = num_pos_args + num_kwonly_args
|
|
// const0 : obj
|
|
// constN : obj
|
|
|
|
// Exception stack entry
|
|
typedef struct _mp_exc_stack_t {
|
|
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_base_t *prev_exc;
|
|
} mp_exc_stack_t;
|
|
|
|
typedef struct _mp_code_state_t {
|
|
// The fun_bc entry points to the underlying function object that is being executed.
|
|
// It is needed to access the start of bytecode and the const_table.
|
|
// It is also needed to prevent the GC from reclaiming the bytecode during execution,
|
|
// because the ip pointer below will always point to the interior of the bytecode.
|
|
mp_obj_fun_bc_t *fun_bc;
|
|
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_t *prev;
|
|
#endif
|
|
// 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_t;
|
|
|
|
mp_uint_t mp_decode_uint(const byte **ptr);
|
|
mp_uint_t mp_decode_uint_value(const byte *ptr);
|
|
const byte *mp_decode_uint_skip(const byte *ptr);
|
|
|
|
mp_vm_return_kind_t mp_execute_bytecode(mp_code_state_t *code_state, volatile mp_obj_t inject_exc);
|
|
mp_code_state_t *mp_obj_fun_bc_prepare_codestate(mp_obj_t func, size_t n_args, size_t n_kw, const mp_obj_t *args);
|
|
void mp_setup_code_state(mp_code_state_t *code_state, size_t n_args, size_t n_kw, const mp_obj_t *args);
|
|
void mp_bytecode_print(const void *descr, const byte *code, mp_uint_t len, const mp_uint_t *const_table);
|
|
void mp_bytecode_print2(const byte *code, size_t len, const mp_uint_t *const_table);
|
|
const byte *mp_bytecode_print_str(const byte *ip);
|
|
#define mp_bytecode_print_inst(code, const_table) mp_bytecode_print2(code, 1, const_table)
|
|
|
|
// Helper macros to access pointer with least significant bits holding flags
|
|
#define MP_TAGPTR_PTR(x) ((void*)((uintptr_t)(x) & ~((uintptr_t)3)))
|
|
#define MP_TAGPTR_TAG0(x) ((uintptr_t)(x) & 1)
|
|
#define MP_TAGPTR_TAG1(x) ((uintptr_t)(x) & 2)
|
|
#define MP_TAGPTR_MAKE(ptr, tag) ((void*)((uintptr_t)(ptr) | (tag)))
|
|
|
|
#if MICROPY_PERSISTENT_CODE_LOAD || MICROPY_PERSISTENT_CODE_SAVE
|
|
|
|
#define MP_OPCODE_BYTE (0)
|
|
#define MP_OPCODE_QSTR (1)
|
|
#define MP_OPCODE_VAR_UINT (2)
|
|
#define MP_OPCODE_OFFSET (3)
|
|
|
|
uint mp_opcode_format(const byte *ip, size_t *opcode_size, bool count_var_uint);
|
|
|
|
#endif
|
|
|
|
#endif // MICROPY_INCLUDED_PY_BC_H
|