63 lines
2.6 KiB
C
63 lines
2.6 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
// Exception stack entry
|
|
typedef struct _mp_exc_stack {
|
|
const byte *handler;
|
|
// bit 0 is saved currently_in_except_block value
|
|
mp_obj_t *val_sp;
|
|
// Saved exception, valid if currently_in_except_block bit is 1
|
|
mp_obj_t prev_exc;
|
|
// We might only have 2 interesting cases here: SETUP_EXCEPT & SETUP_FINALLY,
|
|
// consider storing it in bit 1 of val_sp. TODO: SETUP_WITH?
|
|
byte opcode;
|
|
} 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;
|
|
uint 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);
|
|
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, const byte *code, int len);
|
|
void mp_bytecode_print2(const byte *code, int len);
|
|
|
|
// Helper macros to access pointer with least significant bit holding a flag
|
|
#define MP_TAGPTR_PTR(x) ((void*)((mp_uint_t)(x) & ~((mp_uint_t)1)))
|
|
#define MP_TAGPTR_TAG(x) ((mp_uint_t)(x) & 1)
|
|
#define MP_TAGPTR_MAKE(ptr, tag) ((void*)((mp_uint_t)(ptr) | tag))
|