#include #include #include #include #include #include "misc.h" #include "mpyconfig.h" #include "runtime.h" #include "bc.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 py_show_byte_code(const byte *ip, int len) { const byte *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 PYBC_LOAD_CONST_FALSE: printf("LOAD_CONST_FALSE"); break; case PYBC_LOAD_CONST_NONE: printf("LOAD_CONST_NONE"); break; case PYBC_LOAD_CONST_TRUE: printf("LOAD_CONST_TRUE"); break; case PYBC_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 PYBC_LOAD_CONST_DEC: DECODE_QSTR; PUSH(rt_load_const_dec(qstr)); break; */ case PYBC_LOAD_CONST_ID: DECODE_QSTR; printf("LOAD_CONST_ID %s", qstr_str(qstr)); break; /* case PYBC_LOAD_CONST_STRING: DECODE_QSTR; PUSH(rt_load_const_str(qstr)); break; */ case PYBC_LOAD_FAST_0: printf("LOAD_FAST_0"); break; case PYBC_LOAD_FAST_1: printf("LOAD_FAST_1"); break; case PYBC_LOAD_FAST_2: printf("LOAD_FAST_2"); break; /* case PYBC_LOAD_FAST_N: DECODE_UINT; PUSH(fastn[unum]); break; */ case PYBC_LOAD_NAME: DECODE_QSTR; printf("LOAD_NAME %s", qstr_str(qstr)); break; case PYBC_LOAD_GLOBAL: DECODE_QSTR; printf("LOAD_GLOBAL %s", qstr_str(qstr)); break; case PYBC_LOAD_ATTR: DECODE_QSTR; printf("LOAD_ATTR %s", qstr_str(qstr)); break; case PYBC_LOAD_METHOD: DECODE_QSTR; printf("LOAD_METHOD %s", qstr_str(qstr)); break; case PYBC_LOAD_BUILD_CLASS: printf("LOAD_BUILD_CLASS"); break; case PYBC_STORE_FAST_0: printf("STORE_FAST_0"); break; case PYBC_STORE_FAST_1: printf("STORE_FAST_1"); break; case PYBC_STORE_FAST_2: printf("STORE_FAST_2"); break; /* case PYBC_STORE_FAST_N: DECODE_UINT; fastn[unum] = POP(); break; */ case PYBC_STORE_NAME: DECODE_QSTR; printf("STORE_NAME %s", qstr_str(qstr)); break; /* case PYBC_STORE_GLOBAL: DECODE_QSTR; rt_store_global(qstr, POP()); break; */ case PYBC_STORE_ATTR: DECODE_QSTR; printf("STORE_ATTR %s", qstr_str(qstr)); break; /* case PYBC_STORE_SUBSCR: rt_store_subscr(sp[1], sp[0], sp[2]); sp += 3; break; case PYBC_DUP_TOP: obj1 = *sp; PUSH(obj1); break; case PYBC_DUP_TOP_TWO: sp -= 2; sp[0] = sp[2]; sp[1] = sp[3]; break; */ case PYBC_POP_TOP: printf("POP_TOP"); break; /* case PYBC_ROT_TWO: obj1 = sp[0]; sp[0] = sp[1]; sp[1] = obj1; break; case PYBC_ROT_THREE: obj1 = sp[0]; sp[0] = sp[1]; sp[1] = sp[2]; sp[2] = obj1; break; */ case PYBC_JUMP: DECODE_SLABEL; printf("JUMP %lu", ip + unum - ip_start); break; case PYBC_POP_JUMP_IF_TRUE: DECODE_SLABEL; printf("POP_JUMP_IF_TRUE %lu", ip + unum - ip_start); break; /* case PYBC_POP_JUMP_IF_FALSE: DECODE_SLABEL; if (!rt_is_true(POP())) { ip += unum; } break; case PYBC_JUMP_IF_TRUE_OR_POP: DECODE_SLABEL; if (rt_is_true(*sp)) { ip += unum; } else { sp++; } break; case PYBC_JUMP_IF_FALSE_OR_POP: DECODE_SLABEL; if (rt_is_true(*sp)) { sp++; } else { ip += unum; } break; case PYBC_SETUP_EXCEPT: DECODE_ULABEL; // except labels are always forward *++exc_sp = (machine_uint_t)ip + unum; *++exc_sp = (machine_uint_t)sp; break; case PYBC_END_FINALLY: // not implemented // 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 assert(0); break; case PYBC_GET_ITER: *sp = rt_getiter(*sp); break; case PYBC_FOR_ITER: DECODE_ULABEL; // the jump offset if iteration finishes; for labels are always forward obj1 = rt_iternext(*sp); if (obj1 == py_const_stop_iteration) { ++sp; // pop the exhausted iterator ip += unum; // jump to after for-block } else { PUSH(obj1); // push the next iteration value } break; case PYBC_POP_BLOCK: // pops block and restores the stack assert(0); break; case PYBC_POP_EXCEPT: // TODO need to work out how blocks work etc // pops block, checks it's an exception block, and restores the stack, saving the 3 exception values to local threadstate assert(exc_sp >= &exc_stack[0]); //sp = (py_obj_t*)(*exc_sp--); //exc_sp--; // discard ip exc_sp -= 2; //sp += 3; // pop 3 exception values break; case PYBC_UNARY_OP: unum = *ip++; *sp = rt_unary_op(unum, *sp); break; */ case PYBC_BINARY_OP: unum = *ip++; printf("BINARY_OP %lu", unum); break; case PYBC_COMPARE_OP: unum = *ip++; printf("COMPARE_OP %lu", unum); break; /* case PYBC_BUILD_TUPLE: DECODE_UINT; obj1 = rt_build_tuple(unum, sp); sp += unum - 1; *sp = obj1; break; case PYBC_BUILD_LIST: DECODE_UINT; obj1 = rt_build_list(unum, sp); sp += unum - 1; *sp = obj1; break; case PYBC_LIST_APPEND: DECODE_UINT; // I think it's guaranteed by the compiler that sp[unum] is a list rt_list_append(sp[unum], sp[0]); sp++; break; case PYBC_BUILD_MAP: DECODE_UINT; PUSH(rt_build_map(unum)); break; case PYBC_STORE_MAP: sp += 2; rt_store_map(sp[0], sp[-2], sp[-1]); break; case PYBC_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 PYBC_BUILD_SET: DECODE_UINT; obj1 = rt_build_set(unum, sp); sp += unum - 1; *sp = obj1; break; case PYBC_SET_ADD: DECODE_UINT; // I think it's guaranteed by the compiler that sp[unum] is a set rt_store_set(sp[unum], sp[0]); sp++; break; */ case PYBC_MAKE_FUNCTION: DECODE_UINT; printf("MAKE_FUNCTION %lu", unum); break; case PYBC_CALL_FUNCTION: DECODE_UINT; assert((unum & 0xff00) == 0); // n_keyword unum &= 0xff; // n_positional printf("CALL_FUNCTION %lu", unum); break; case PYBC_CALL_METHOD: DECODE_UINT; assert((unum & 0xff00) == 0); // n_keyword unum &= 0xff; printf("CALL_METHOD %lu", unum); break; case PYBC_RETURN_VALUE: printf("RETURN_VALUE"); break; /* case PYBC_YIELD_VALUE: nlr_pop(); *ip_in_out = ip; fastn[0] = fast0; fastn[1] = fast1; fastn[2] = fast2; *sp_in_out = sp; return true; */ default: printf("code %p, byte code 0x%02x not implemented\n", ip, op); assert(0); return; } printf("\n"); } }