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circuitpython/py/showbc.c
Damien George 66028ab6dc Basic implementation of import. 
import works for simple cases.  Still work to do on finding the right
script, and setting globals/locals correctly when running an imported
function.
2014-01-03 14:03:48 +00:00

362 lines
10 KiB
C
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#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "misc.h"
#include "mpconfig.h"
#include "bc0.h"
#define DECODE_UINT do { unum = *ip++; if (unum > 127) { unum = ((unum & 0x3f) << 8) | (*ip++); } } while (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 do { qstr = *ip++; if (qstr > 127) { qstr = ((qstr & 0x3f) << 8) | (*ip++); } } while (0)
void mp_show_byte_code(const byte *ip, int len) {
const byte *ip_start = ip;
// decode prelude
{
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;
ip_start = ip;
}
machine_uint_t unum;
qstr qstr;
while (ip - ip_start < len) {
printf("%02u ", (uint)(ip - ip_start));
int op = *ip++;
switch (op) {
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_SMALL_INT:
unum = (ip[0] | (ip[1] << 8) | (ip[2] << 16)) - 0x800000;
ip += 3;
printf("LOAD_CONST_SMALL_INT %d", (int)unum);
break;
/*
case MP_BC_LOAD_CONST_DEC:
DECODE_QSTR;
PUSH(rt_load_const_dec(qstr));
break;
*/
case MP_BC_LOAD_CONST_ID:
DECODE_QSTR;
printf("LOAD_CONST_ID %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_FAST_0:
printf("LOAD_FAST_0");
break;
case MP_BC_LOAD_FAST_1:
printf("LOAD_FAST_1");
break;
case MP_BC_LOAD_FAST_2:
printf("LOAD_FAST_2");
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_STORE_FAST_0:
printf("STORE_FAST_0");
break;
case MP_BC_STORE_FAST_1:
printf("STORE_FAST_1");
break;
case MP_BC_STORE_FAST_2:
printf("STORE_FAST_2");
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_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:
obj1 = sp[0];
sp[0] = sp[1];
sp[1] = obj1;
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;
if (rt_is_true(*sp)) {
ip += unum;
} else {
sp++;
}
break;
case MP_BC_JUMP_IF_FALSE_OR_POP:
DECODE_SLABEL;
if (rt_is_true(*sp)) {
sp++;
} else {
ip += unum;
}
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_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_UNARY_OP:
unum = *ip++;
*sp = rt_unary_op(unum, *sp);
break;
*/
case MP_BC_BINARY_OP:
unum = *ip++;
printf("BINARY_OP " UINT_FMT, unum);
break;
case MP_BC_COMPARE_OP:
unum = *ip++;
printf("COMPARE_OP " UINT_FMT, unum);
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:
sp += 2;
rt_store_map(sp[0], sp[-2], sp[-1]);
break;
case MP_BC_MAP_ADD:
DECODE_UINT;
// I think it's guaranteed by the compiler that sp[unum + 1] is a map
rt_store_map(sp[unum + 1], sp[0], sp[1]);
sp += 2;
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;
case MP_BC_UNPACK_SEQUENCE:
DECODE_UINT;
printf("UNPACK_SEQUENCE " UINT_FMT, unum);
break;
case MP_BC_MAKE_FUNCTION:
DECODE_UINT;
printf("MAKE_FUNCTION " UINT_FMT, unum);
break;
case MP_BC_MAKE_CLOSURE:
DECODE_UINT;
printf("MAKE_CLOSURE " UINT_FMT, unum);
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_METHOD:
DECODE_UINT;
printf("CALL_METHOD n=" UINT_FMT " nkw=" UINT_FMT, unum & 0xff, (unum >> 8) & 0xff);
break;
case MP_BC_RETURN_VALUE:
printf("RETURN_VALUE");
break;
case MP_BC_YIELD_VALUE:
printf("YIELD_VALUE");
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 NAME %s", qstr_str(qstr));
break;
default:
printf("code %p, byte code 0x%02x not implemented\n", ip, op);
assert(0);
return;
}
printf("\n");
}
}
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