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micropython/py/showbc.c

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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.
*/
#include <stdio.h>
#include <assert.h>
#include "mpconfig.h"
#include "misc.h"
#include "qstr.h"
#include "obj.h"
#include "runtime.h"
#include "bc0.h"
#include "bc.h"
#if MICROPY_DEBUG_PRINTERS
#define DECODE_UINT { \
unum = 0; \
do { \
unum = (unum << 7) + (*ip & 0x7f); \
} while ((*ip++ & 0x80) != 0); \
}
#define DECODE_ULABEL do { unum = (ip[0] | (ip[1] << 8)); ip += 2; } while (0)
#define DECODE_SLABEL do { unum = (ip[0] | (ip[1] << 8)) - 0x8000; ip += 2; } while (0)
#define DECODE_QSTR { \
qstr = 0; \
do { \
qstr = (qstr << 7) + (*ip & 0x7f); \
} while ((*ip++ & 0x80) != 0); \
}
#define DECODE_PTR do { \
ip = (byte*)(((mp_uint_t)ip + sizeof(mp_uint_t) - 1) & (~(sizeof(mp_uint_t) - 1))); /* align ip */ \
unum = *(mp_uint_t*)ip; \
ip += sizeof(mp_uint_t); \
} while (0)
void mp_bytecode_print(const void *descr, mp_uint_t n_total_args, const byte *ip, mp_uint_t len) {
const byte *ip_start = ip;
// get code info size
const byte *code_info = ip;
mp_uint_t code_info_size = mp_decode_uint(&code_info);
ip += code_info_size;
qstr block_name = mp_decode_uint(&code_info);
qstr source_file = mp_decode_uint(&code_info);
printf("File %s, code block '%s' (descriptor: %p, bytecode @%p " UINT_FMT " bytes)\n",
qstr_str(source_file), qstr_str(block_name), descr, code_info, len);
// raw bytecode dump
printf("Raw bytecode (code_info_size=" UINT_FMT ", bytecode_size=" UINT_FMT "):\n", code_info_size, len - code_info_size);
for (mp_uint_t i = 0; i < len; i++) {
if (i > 0 && i % 16 == 0) {
printf("\n");
}
printf(" %02x", ip_start[i]);
}
printf("\n");
// bytecode prelude: arg names (as qstr objects)
printf("arg names:");
for (int i = 0; i < n_total_args; i++) {
printf(" %s", qstr_str(MP_OBJ_QSTR_VALUE(*(mp_obj_t*)ip)));
ip += sizeof(mp_obj_t);
}
printf("\n");
// bytecode prelude: state size and exception stack size; 16 bit uints
{
uint n_state = mp_decode_uint(&ip);
uint n_exc_stack = mp_decode_uint(&ip);
printf("(N_STATE %u)\n", n_state);
printf("(N_EXC_STACK %u)\n", n_exc_stack);
}
// bytecode prelude: initialise closed over variables
{
uint n_local = *ip++;
printf("(NUM_LOCAL %u)\n", n_local);
for (; n_local > 0; n_local--) {
uint local_num = *ip++;
printf("(INIT_CELL %u)\n", local_num);
}
len -= ip - ip_start;
}
// print out line number info
{
mp_int_t bc = (ip_start + code_info_size) - ip; // start counting from the prelude
mp_uint_t source_line = 1;
printf(" bc=" INT_FMT " line=" UINT_FMT "\n", bc, source_line);
for (const byte* ci = code_info; *ci;) {
if ((ci[0] & 0x80) == 0) {
// 0b0LLBBBBB encoding
bc += ci[0] & 0x1f;
source_line += ci[0] >> 5;
ci += 1;
} else {
// 0b1LLLBBBB 0bLLLLLLLL encoding (l's LSB in second byte)
bc += ci[0] & 0xf;
source_line += ((ci[0] << 4) & 0x700) | ci[1];
ci += 2;
}
printf(" bc=" INT_FMT " line=" UINT_FMT "\n", bc, source_line);
}
}
mp_bytecode_print2(ip, len - 0);
}
void mp_bytecode_print2(const byte *ip, mp_uint_t len) {
const byte *ip_start = ip;
mp_uint_t unum;
qstr qstr;
while (ip - ip_start < len) {
printf("%02u ", (uint)(ip - ip_start));
switch (*ip++) {
case MP_BC_LOAD_CONST_FALSE:
printf("LOAD_CONST_FALSE");
break;
case MP_BC_LOAD_CONST_NONE:
printf("LOAD_CONST_NONE");
break;
case MP_BC_LOAD_CONST_TRUE:
printf("LOAD_CONST_TRUE");
break;
case MP_BC_LOAD_CONST_ELLIPSIS:
printf("LOAD_CONST_ELLIPSIS");
break;
case MP_BC_LOAD_CONST_SMALL_INT: {
mp_int_t num = 0;
if ((ip[0] & 0x40) != 0) {
// Number is negative
num--;
}
do {
num = (num << 7) | (*ip & 0x7f);
} while ((*ip++ & 0x80) != 0);
printf("LOAD_CONST_SMALL_INT " INT_FMT, num);
break;
}
case MP_BC_LOAD_CONST_INT:
DECODE_QSTR;
printf("LOAD_CONST_INT %s", qstr_str(qstr));
break;
case MP_BC_LOAD_CONST_DEC:
DECODE_QSTR;
printf("LOAD_CONST_DEC %s", qstr_str(qstr));
break;
case MP_BC_LOAD_CONST_BYTES:
DECODE_QSTR;
printf("LOAD_CONST_BYTES %s", qstr_str(qstr));
break;
case MP_BC_LOAD_CONST_STRING:
DECODE_QSTR;
printf("LOAD_CONST_STRING '%s'", qstr_str(qstr));
break;
case MP_BC_LOAD_NULL:
printf("LOAD_NULL");
break;
case MP_BC_LOAD_FAST_N:
DECODE_UINT;
printf("LOAD_FAST_N " UINT_FMT, unum);
break;
case MP_BC_LOAD_DEREF:
DECODE_UINT;
printf("LOAD_DEREF " UINT_FMT, unum);
break;
case MP_BC_LOAD_NAME:
DECODE_QSTR;
printf("LOAD_NAME %s", qstr_str(qstr));
break;
case MP_BC_LOAD_GLOBAL:
DECODE_QSTR;
printf("LOAD_GLOBAL %s", qstr_str(qstr));
break;
case MP_BC_LOAD_ATTR:
DECODE_QSTR;
printf("LOAD_ATTR %s", qstr_str(qstr));
break;
case MP_BC_LOAD_METHOD:
DECODE_QSTR;
printf("LOAD_METHOD %s", qstr_str(qstr));
break;
case MP_BC_LOAD_BUILD_CLASS:
printf("LOAD_BUILD_CLASS");
break;
case MP_BC_LOAD_SUBSCR:
printf("LOAD_SUBSCR");
break;
case MP_BC_STORE_FAST_N:
DECODE_UINT;
printf("STORE_FAST_N " UINT_FMT, unum);
break;
case MP_BC_STORE_DEREF:
DECODE_UINT;
printf("STORE_DEREF " UINT_FMT, unum);
break;
case MP_BC_STORE_NAME:
DECODE_QSTR;
printf("STORE_NAME %s", qstr_str(qstr));
break;
case MP_BC_STORE_GLOBAL:
DECODE_QSTR;
printf("STORE_GLOBAL %s", qstr_str(qstr));
break;
case MP_BC_STORE_ATTR:
DECODE_QSTR;
printf("STORE_ATTR %s", qstr_str(qstr));
break;
case MP_BC_STORE_SUBSCR:
printf("STORE_SUBSCR");
break;
case MP_BC_DELETE_FAST:
DECODE_UINT;
printf("DELETE_FAST " UINT_FMT, unum);
break;
case MP_BC_DELETE_DEREF:
DECODE_UINT;
printf("DELETE_DEREF " UINT_FMT, unum);
break;
case MP_BC_DELETE_NAME:
DECODE_QSTR;
printf("DELETE_NAME %s", qstr_str(qstr));
break;
case MP_BC_DUP_TOP:
printf("DUP_TOP");
break;
case MP_BC_DUP_TOP_TWO:
printf("DUP_TOP_TWO");
break;
case MP_BC_POP_TOP:
printf("POP_TOP");
break;
case MP_BC_ROT_TWO:
printf("ROT_TWO");
break;
case MP_BC_ROT_THREE:
printf("ROT_THREE");
break;
case MP_BC_JUMP:
DECODE_SLABEL;
printf("JUMP " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_POP_JUMP_IF_TRUE:
DECODE_SLABEL;
printf("POP_JUMP_IF_TRUE " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_POP_JUMP_IF_FALSE:
DECODE_SLABEL;
printf("POP_JUMP_IF_FALSE " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_JUMP_IF_TRUE_OR_POP:
DECODE_SLABEL;
printf("JUMP_IF_TRUE_OR_POP " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_JUMP_IF_FALSE_OR_POP:
DECODE_SLABEL;
printf("JUMP_IF_FALSE_OR_POP " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_SETUP_WITH:
DECODE_ULABEL; // loop-like labels are always forward
printf("SETUP_WITH " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_WITH_CLEANUP:
printf("WITH_CLEANUP");
break;
case MP_BC_UNWIND_JUMP:
DECODE_SLABEL;
printf("UNWIND_JUMP " UINT_FMT " %d", ip + unum - ip_start, *ip);
ip += 1;
break;
case MP_BC_SETUP_EXCEPT:
DECODE_ULABEL; // except labels are always forward
printf("SETUP_EXCEPT " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_SETUP_FINALLY:
DECODE_ULABEL; // except labels are always forward
printf("SETUP_FINALLY " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_END_FINALLY:
// if TOS is an exception, reraises the exception (3 values on TOS)
// if TOS is an integer, does something else
// if TOS is None, just pops it and continues
// else error
printf("END_FINALLY");
break;
case MP_BC_GET_ITER:
printf("GET_ITER");
break;
case MP_BC_FOR_ITER:
DECODE_ULABEL; // the jump offset if iteration finishes; for labels are always forward
printf("FOR_ITER " UINT_FMT, ip + unum - ip_start);
break;
case MP_BC_POP_BLOCK:
// pops block and restores the stack
printf("POP_BLOCK");
break;
case MP_BC_POP_EXCEPT:
// pops block, checks it's an exception block, and restores the stack, saving the 3 exception values to local threadstate
printf("POP_EXCEPT");
break;
case MP_BC_NOT:
printf("NOT");
break;
case MP_BC_BUILD_TUPLE:
DECODE_UINT;
printf("BUILD_TUPLE " UINT_FMT, unum);
break;
case MP_BC_BUILD_LIST:
DECODE_UINT;
printf("BUILD_LIST " UINT_FMT, unum);
break;
case MP_BC_LIST_APPEND:
DECODE_UINT;
printf("LIST_APPEND " UINT_FMT, unum);
break;
case MP_BC_BUILD_MAP:
DECODE_UINT;
printf("BUILD_MAP " UINT_FMT, unum);
break;
case MP_BC_STORE_MAP:
printf("STORE_MAP");
break;
case MP_BC_MAP_ADD:
DECODE_UINT;
printf("MAP_ADD " UINT_FMT, unum);
break;
case MP_BC_BUILD_SET:
DECODE_UINT;
printf("BUILD_SET " UINT_FMT, unum);
break;
case MP_BC_SET_ADD:
DECODE_UINT;
printf("SET_ADD " UINT_FMT, unum);
break;
#if MICROPY_PY_BUILTINS_SLICE
case MP_BC_BUILD_SLICE:
DECODE_UINT;
printf("BUILD_SLICE " UINT_FMT, unum);
break;
#endif
case MP_BC_UNPACK_SEQUENCE:
DECODE_UINT;
printf("UNPACK_SEQUENCE " UINT_FMT, unum);
break;
case MP_BC_MAKE_FUNCTION:
DECODE_PTR;
printf("MAKE_FUNCTION %p", (void*)unum);
break;
case MP_BC_MAKE_FUNCTION_DEFARGS:
DECODE_PTR;
printf("MAKE_FUNCTION_DEFARGS %p", (void*)unum);
break;
case MP_BC_MAKE_CLOSURE: {
DECODE_PTR;
mp_uint_t n_closed_over = *ip++;
printf("MAKE_CLOSURE %p " UINT_FMT, (void*)unum, n_closed_over);
break;
}
case MP_BC_MAKE_CLOSURE_DEFARGS: {
DECODE_PTR;
mp_uint_t n_closed_over = *ip++;
printf("MAKE_CLOSURE_DEFARGS %p " UINT_FMT, (void*)unum, n_closed_over);
break;
}
case MP_BC_CALL_FUNCTION:
DECODE_UINT;
printf("CALL_FUNCTION n=" UINT_FMT " nkw=" UINT_FMT, unum & 0xff, (unum >> 8) & 0xff);
break;
case MP_BC_CALL_FUNCTION_VAR_KW:
DECODE_UINT;
printf("CALL_FUNCTION_VAR_KW n=" UINT_FMT " nkw=" UINT_FMT, unum & 0xff, (unum >> 8) & 0xff);
break;
case MP_BC_CALL_METHOD:
DECODE_UINT;
printf("CALL_METHOD n=" UINT_FMT " nkw=" UINT_FMT, unum & 0xff, (unum >> 8) & 0xff);
break;
case MP_BC_CALL_METHOD_VAR_KW:
DECODE_UINT;
printf("CALL_METHOD_VAR_KW n=" UINT_FMT " nkw=" UINT_FMT, unum & 0xff, (unum >> 8) & 0xff);
break;
case MP_BC_RETURN_VALUE:
printf("RETURN_VALUE");
break;
case MP_BC_RAISE_VARARGS:
unum = *ip++;
printf("RAISE_VARARGS " UINT_FMT, unum);
break;
case MP_BC_YIELD_VALUE:
printf("YIELD_VALUE");
break;
case MP_BC_YIELD_FROM:
printf("YIELD_FROM");
break;
case MP_BC_IMPORT_NAME:
DECODE_QSTR;
printf("IMPORT_NAME '%s'", qstr_str(qstr));
break;
case MP_BC_IMPORT_FROM:
DECODE_QSTR;
printf("IMPORT_FROM '%s'", qstr_str(qstr));
break;
case MP_BC_IMPORT_STAR:
printf("IMPORT_STAR");
break;
default:
if (ip[-1] < MP_BC_LOAD_CONST_SMALL_INT_MULTI + 64) {
printf("LOAD_CONST_SMALL_INT " INT_FMT, (mp_int_t)ip[-1] - MP_BC_LOAD_CONST_SMALL_INT_MULTI - 16);
} else if (ip[-1] < MP_BC_LOAD_FAST_MULTI + 16) {
printf("LOAD_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_LOAD_FAST_MULTI);
} else if (ip[-1] < MP_BC_STORE_FAST_MULTI + 16) {
printf("STORE_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_STORE_FAST_MULTI);
} else if (ip[-1] < MP_BC_UNARY_OP_MULTI + 5) {
printf("UNARY_OP " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_UNARY_OP_MULTI);
} else if (ip[-1] < MP_BC_BINARY_OP_MULTI + 35) {
printf("BINARY_OP " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_BINARY_OP_MULTI);
} else {
printf("code %p, byte code 0x%02x not implemented\n", ip, ip[-1]);
assert(0);
return;
}
break;
}
printf("\n");
}
}
#endif // MICROPY_DEBUG_PRINTERS
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