1519 lines
63 KiB
C
1519 lines
63 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013-2019 Damien P. George
|
|
* Copyright (c) 2014-2015 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.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "py/emitglue.h"
|
|
#include "py/objtype.h"
|
|
#include "py/runtime.h"
|
|
#include "py/bc0.h"
|
|
#include "py/bc.h"
|
|
#include "py/profile.h"
|
|
|
|
#if 0
|
|
#define TRACE(ip) printf("sp=%d ", (int)(sp - &code_state->state[0] + 1)); mp_bytecode_print2(ip, 1, code_state->fun_bc->const_table);
|
|
#else
|
|
#define TRACE(ip)
|
|
#endif
|
|
|
|
// Value stack grows up (this makes it incompatible with native C stack, but
|
|
// makes sure that arguments to functions are in natural order arg1..argN
|
|
// (Python semantics mandates left-to-right evaluation order, including for
|
|
// function arguments). Stack pointer is pre-incremented and points at the
|
|
// top element.
|
|
// Exception stack also grows up, top element is also pointed at.
|
|
|
|
#define DECODE_UINT \
|
|
mp_uint_t unum = 0; \
|
|
do { \
|
|
unum = (unum << 7) + (*ip & 0x7f); \
|
|
} while ((*ip++ & 0x80) != 0)
|
|
#define DECODE_ULABEL size_t ulab = (ip[0] | (ip[1] << 8)); ip += 2
|
|
#define DECODE_SLABEL size_t slab = (ip[0] | (ip[1] << 8)) - 0x8000; ip += 2
|
|
|
|
#if MICROPY_PERSISTENT_CODE
|
|
|
|
#define DECODE_QSTR \
|
|
qstr qst = ip[0] | ip[1] << 8; \
|
|
ip += 2;
|
|
#define DECODE_PTR \
|
|
DECODE_UINT; \
|
|
void *ptr = (void*)(uintptr_t)code_state->fun_bc->const_table[unum]
|
|
#define DECODE_OBJ \
|
|
DECODE_UINT; \
|
|
mp_obj_t obj = (mp_obj_t)code_state->fun_bc->const_table[unum]
|
|
|
|
#else
|
|
|
|
#define DECODE_QSTR qstr qst = 0; \
|
|
do { \
|
|
qst = (qst << 7) + (*ip & 0x7f); \
|
|
} while ((*ip++ & 0x80) != 0)
|
|
#define DECODE_PTR \
|
|
ip = (byte*)MP_ALIGN(ip, sizeof(void*)); \
|
|
void *ptr = *(void**)ip; \
|
|
ip += sizeof(void*)
|
|
#define DECODE_OBJ \
|
|
ip = (byte*)MP_ALIGN(ip, sizeof(mp_obj_t)); \
|
|
mp_obj_t obj = *(mp_obj_t*)ip; \
|
|
ip += sizeof(mp_obj_t)
|
|
|
|
#endif
|
|
|
|
#define PUSH(val) *++sp = (val)
|
|
#define POP() (*sp--)
|
|
#define TOP() (*sp)
|
|
#define SET_TOP(val) *sp = (val)
|
|
|
|
#if MICROPY_PY_SYS_EXC_INFO
|
|
#define CLEAR_SYS_EXC_INFO() MP_STATE_VM(cur_exception) = NULL;
|
|
#else
|
|
#define CLEAR_SYS_EXC_INFO()
|
|
#endif
|
|
|
|
#define PUSH_EXC_BLOCK(with_or_finally) do { \
|
|
DECODE_ULABEL; /* except labels are always forward */ \
|
|
++exc_sp; \
|
|
exc_sp->handler = ip + ulab; \
|
|
exc_sp->val_sp = MP_TAGPTR_MAKE(sp, ((with_or_finally) << 1)); \
|
|
exc_sp->prev_exc = NULL; \
|
|
} while (0)
|
|
|
|
#define POP_EXC_BLOCK() \
|
|
exc_sp--; /* pop back to previous exception handler */ \
|
|
CLEAR_SYS_EXC_INFO() /* just clear sys.exc_info(), not compliant, but it shouldn't be used in 1st place */
|
|
|
|
#if MICROPY_PY_SYS_SETTRACE
|
|
|
|
#define FRAME_SETUP() do { \
|
|
assert(code_state != code_state->prev_state); \
|
|
MP_STATE_THREAD(current_code_state) = code_state; \
|
|
assert(code_state != code_state->prev_state); \
|
|
} while(0)
|
|
|
|
#define FRAME_ENTER() do { \
|
|
assert(code_state != code_state->prev_state); \
|
|
code_state->prev_state = MP_STATE_THREAD(current_code_state); \
|
|
assert(code_state != code_state->prev_state); \
|
|
if (!mp_prof_is_executing) { \
|
|
mp_prof_frame_enter(code_state); \
|
|
} \
|
|
} while(0)
|
|
|
|
#define FRAME_LEAVE() do { \
|
|
assert(code_state != code_state->prev_state); \
|
|
MP_STATE_THREAD(current_code_state) = code_state->prev_state; \
|
|
assert(code_state != code_state->prev_state); \
|
|
} while(0)
|
|
|
|
#define FRAME_UPDATE() do { \
|
|
assert(MP_STATE_THREAD(current_code_state) == code_state); \
|
|
if (!mp_prof_is_executing) { \
|
|
code_state->frame = MP_OBJ_TO_PTR(mp_prof_frame_update(code_state)); \
|
|
} \
|
|
} while(0)
|
|
|
|
#define TRACE_TICK(current_ip, current_sp, is_exception) do { \
|
|
assert(code_state != code_state->prev_state); \
|
|
assert(MP_STATE_THREAD(current_code_state) == code_state); \
|
|
if (!mp_prof_is_executing && code_state->frame && MP_STATE_THREAD(prof_trace_callback)) { \
|
|
MP_PROF_INSTR_DEBUG_PRINT(code_state->ip); \
|
|
} \
|
|
if (!mp_prof_is_executing && code_state->frame && code_state->frame->callback) { \
|
|
mp_prof_instr_tick(code_state, is_exception); \
|
|
} \
|
|
} while(0)
|
|
|
|
#else // MICROPY_PY_SYS_SETTRACE
|
|
#define FRAME_SETUP()
|
|
#define FRAME_ENTER()
|
|
#define FRAME_LEAVE()
|
|
#define FRAME_UPDATE()
|
|
#define TRACE_TICK(current_ip, current_sp, is_exception)
|
|
#endif // MICROPY_PY_SYS_SETTRACE
|
|
|
|
#if MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
|
|
static inline mp_map_elem_t *mp_map_cached_lookup(mp_map_t *map, qstr qst, uint8_t *idx_cache) {
|
|
size_t idx = *idx_cache;
|
|
mp_obj_t key = MP_OBJ_NEW_QSTR(qst);
|
|
mp_map_elem_t *elem = NULL;
|
|
if (idx < map->alloc && map->table[idx].key == key) {
|
|
elem = &map->table[idx];
|
|
} else {
|
|
elem = mp_map_lookup(map, key, MP_MAP_LOOKUP);
|
|
if (elem != NULL) {
|
|
*idx_cache = (elem - &map->table[0]) & 0xff;
|
|
}
|
|
}
|
|
return elem;
|
|
}
|
|
#endif
|
|
|
|
// fastn has items in reverse order (fastn[0] is local[0], fastn[-1] is local[1], etc)
|
|
// sp points to bottom of stack which grows up
|
|
// returns:
|
|
// MP_VM_RETURN_NORMAL, sp valid, return value in *sp
|
|
// MP_VM_RETURN_YIELD, ip, sp valid, yielded value in *sp
|
|
// MP_VM_RETURN_EXCEPTION, exception in state[0]
|
|
mp_vm_return_kind_t mp_execute_bytecode(mp_code_state_t *code_state, volatile mp_obj_t inject_exc) {
|
|
#define SELECTIVE_EXC_IP (0)
|
|
#if SELECTIVE_EXC_IP
|
|
#define MARK_EXC_IP_SELECTIVE() { code_state->ip = ip; } /* stores ip 1 byte past last opcode */
|
|
#define MARK_EXC_IP_GLOBAL()
|
|
#else
|
|
#define MARK_EXC_IP_SELECTIVE()
|
|
#define MARK_EXC_IP_GLOBAL() { code_state->ip = ip; } /* stores ip pointing to last opcode */
|
|
#endif
|
|
#if MICROPY_OPT_COMPUTED_GOTO
|
|
#include "py/vmentrytable.h"
|
|
#define DISPATCH() do { \
|
|
TRACE(ip); \
|
|
MARK_EXC_IP_GLOBAL(); \
|
|
TRACE_TICK(ip, sp, false); \
|
|
goto *entry_table[*ip++]; \
|
|
} while (0)
|
|
#define DISPATCH_WITH_PEND_EXC_CHECK() goto pending_exception_check
|
|
#define ENTRY(op) entry_##op
|
|
#define ENTRY_DEFAULT entry_default
|
|
#else
|
|
#define DISPATCH() goto dispatch_loop
|
|
#define DISPATCH_WITH_PEND_EXC_CHECK() goto pending_exception_check
|
|
#define ENTRY(op) case op
|
|
#define ENTRY_DEFAULT default
|
|
#endif
|
|
|
|
// nlr_raise needs to be implemented as a goto, so that the C compiler's flow analyser
|
|
// sees that it's possible for us to jump from the dispatch loop to the exception
|
|
// handler. Without this, the code may have a different stack layout in the dispatch
|
|
// loop and the exception handler, leading to very obscure bugs.
|
|
#define RAISE(o) do { nlr_pop(); nlr.ret_val = MP_OBJ_TO_PTR(o); goto exception_handler; } while (0)
|
|
|
|
#if MICROPY_STACKLESS
|
|
run_code_state: ;
|
|
#endif
|
|
FRAME_ENTER();
|
|
|
|
#if MICROPY_STACKLESS
|
|
run_code_state_from_return: ;
|
|
#endif
|
|
FRAME_SETUP();
|
|
|
|
// Pointers which are constant for particular invocation of mp_execute_bytecode()
|
|
mp_obj_t * /*const*/ fastn;
|
|
mp_exc_stack_t * /*const*/ exc_stack;
|
|
{
|
|
size_t n_state = mp_decode_uint_value(code_state->fun_bc->bytecode);
|
|
fastn = &code_state->state[n_state - 1];
|
|
exc_stack = (mp_exc_stack_t*)(code_state->state + n_state);
|
|
}
|
|
|
|
// variables that are visible to the exception handler (declared volatile)
|
|
mp_exc_stack_t *volatile exc_sp = MP_TAGPTR_PTR(code_state->exc_sp); // stack grows up, exc_sp points to top of stack
|
|
|
|
#if MICROPY_PY_THREAD_GIL && MICROPY_PY_THREAD_GIL_VM_DIVISOR
|
|
// This needs to be volatile and outside the VM loop so it persists across handling
|
|
// of any exceptions. Otherwise it's possible that the VM never gives up the GIL.
|
|
volatile int gil_divisor = MICROPY_PY_THREAD_GIL_VM_DIVISOR;
|
|
#endif
|
|
|
|
// outer exception handling loop
|
|
for (;;) {
|
|
nlr_buf_t nlr;
|
|
outer_dispatch_loop:
|
|
if (nlr_push(&nlr) == 0) {
|
|
// local variables that are not visible to the exception handler
|
|
const byte *ip = code_state->ip;
|
|
mp_obj_t *sp = code_state->sp;
|
|
mp_obj_t obj_shared;
|
|
MICROPY_VM_HOOK_INIT
|
|
|
|
// If we have exception to inject, now that we finish setting up
|
|
// execution context, raise it. This works as if RAISE_VARARGS
|
|
// bytecode was executed.
|
|
// Injecting exc into yield from generator is a special case,
|
|
// handled by MP_BC_YIELD_FROM itself
|
|
if (inject_exc != MP_OBJ_NULL && *ip != MP_BC_YIELD_FROM) {
|
|
mp_obj_t exc = inject_exc;
|
|
inject_exc = MP_OBJ_NULL;
|
|
exc = mp_make_raise_obj(exc);
|
|
RAISE(exc);
|
|
}
|
|
|
|
// loop to execute byte code
|
|
for (;;) {
|
|
dispatch_loop:
|
|
#if MICROPY_OPT_COMPUTED_GOTO
|
|
DISPATCH();
|
|
#else
|
|
TRACE(ip);
|
|
MARK_EXC_IP_GLOBAL();
|
|
TRACE_TICK(ip, sp, false);
|
|
switch (*ip++) {
|
|
#endif
|
|
|
|
ENTRY(MP_BC_LOAD_CONST_FALSE):
|
|
PUSH(mp_const_false);
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_LOAD_CONST_NONE):
|
|
PUSH(mp_const_none);
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_LOAD_CONST_TRUE):
|
|
PUSH(mp_const_true);
|
|
DISPATCH();
|
|
|
|
ENTRY(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);
|
|
PUSH(MP_OBJ_NEW_SMALL_INT(num));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_LOAD_CONST_STRING): {
|
|
DECODE_QSTR;
|
|
PUSH(MP_OBJ_NEW_QSTR(qst));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_LOAD_CONST_OBJ): {
|
|
DECODE_OBJ;
|
|
PUSH(obj);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_LOAD_NULL):
|
|
PUSH(MP_OBJ_NULL);
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_LOAD_FAST_N): {
|
|
DECODE_UINT;
|
|
obj_shared = fastn[-unum];
|
|
load_check:
|
|
if (obj_shared == MP_OBJ_NULL) {
|
|
local_name_error: {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_t obj = mp_obj_new_exception_msg(&mp_type_NameError, "local variable referenced before assignment");
|
|
RAISE(obj);
|
|
}
|
|
}
|
|
PUSH(obj_shared);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_LOAD_DEREF): {
|
|
DECODE_UINT;
|
|
obj_shared = mp_obj_cell_get(fastn[-unum]);
|
|
goto load_check;
|
|
}
|
|
|
|
#if !MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
|
|
ENTRY(MP_BC_LOAD_NAME): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
PUSH(mp_load_name(qst));
|
|
DISPATCH();
|
|
}
|
|
#else
|
|
ENTRY(MP_BC_LOAD_NAME): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_map_elem_t *elem = mp_map_cached_lookup(&mp_locals_get()->map, qst, (uint8_t*)ip);
|
|
mp_obj_t obj;
|
|
if (elem != NULL) {
|
|
obj = elem->value;
|
|
} else {
|
|
obj = mp_load_name(qst);
|
|
}
|
|
PUSH(obj);
|
|
ip++;
|
|
DISPATCH();
|
|
}
|
|
#endif
|
|
|
|
#if !MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
|
|
ENTRY(MP_BC_LOAD_GLOBAL): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
PUSH(mp_load_global(qst));
|
|
DISPATCH();
|
|
}
|
|
#else
|
|
ENTRY(MP_BC_LOAD_GLOBAL): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_map_elem_t *elem = mp_map_cached_lookup(&mp_globals_get()->map, qst, (uint8_t*)ip);
|
|
mp_obj_t obj;
|
|
if (elem != NULL) {
|
|
obj = elem->value;
|
|
} else {
|
|
obj = mp_load_global(qst);
|
|
}
|
|
PUSH(obj);
|
|
ip++;
|
|
DISPATCH();
|
|
}
|
|
#endif
|
|
|
|
#if !MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
|
|
ENTRY(MP_BC_LOAD_ATTR): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
SET_TOP(mp_load_attr(TOP(), qst));
|
|
DISPATCH();
|
|
}
|
|
#else
|
|
ENTRY(MP_BC_LOAD_ATTR): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_obj_t top = TOP();
|
|
mp_map_elem_t *elem = NULL;
|
|
if (mp_obj_is_instance_type(mp_obj_get_type(top))) {
|
|
mp_obj_instance_t *self = MP_OBJ_TO_PTR(top);
|
|
elem = mp_map_cached_lookup(&self->members, qst, (uint8_t*)ip);
|
|
}
|
|
mp_obj_t obj;
|
|
if (elem != NULL) {
|
|
obj = elem->value;
|
|
} else {
|
|
obj = mp_load_attr(top, qst);
|
|
}
|
|
SET_TOP(obj);
|
|
ip++;
|
|
DISPATCH();
|
|
}
|
|
#endif
|
|
|
|
ENTRY(MP_BC_LOAD_METHOD): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_load_method(*sp, qst, sp);
|
|
sp += 1;
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_LOAD_SUPER_METHOD): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
sp -= 1;
|
|
mp_load_super_method(qst, sp - 1);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_LOAD_BUILD_CLASS):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
PUSH(mp_load_build_class());
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_LOAD_SUBSCR): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_t index = POP();
|
|
SET_TOP(mp_obj_subscr(TOP(), index, MP_OBJ_SENTINEL));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_STORE_FAST_N): {
|
|
DECODE_UINT;
|
|
fastn[-unum] = POP();
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_STORE_DEREF): {
|
|
DECODE_UINT;
|
|
mp_obj_cell_set(fastn[-unum], POP());
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_STORE_NAME): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_store_name(qst, POP());
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_STORE_GLOBAL): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_store_global(qst, POP());
|
|
DISPATCH();
|
|
}
|
|
|
|
#if !MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
|
|
ENTRY(MP_BC_STORE_ATTR): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_store_attr(sp[0], qst, sp[-1]);
|
|
sp -= 2;
|
|
DISPATCH();
|
|
}
|
|
#else
|
|
// This caching code works with MICROPY_PY_BUILTINS_PROPERTY and/or
|
|
// MICROPY_PY_DESCRIPTORS enabled because if the attr exists in
|
|
// self->members then it can't be a property or have descriptors. A
|
|
// consequence of this is that we can't use MP_MAP_LOOKUP_ADD_IF_NOT_FOUND
|
|
// in the fast-path below, because that store could override a property.
|
|
ENTRY(MP_BC_STORE_ATTR): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_map_elem_t *elem = NULL;
|
|
mp_obj_t top = TOP();
|
|
if (mp_obj_is_instance_type(mp_obj_get_type(top)) && sp[-1] != MP_OBJ_NULL) {
|
|
mp_obj_instance_t *self = MP_OBJ_TO_PTR(top);
|
|
elem = mp_map_cached_lookup(&self->members, qst, (uint8_t*)ip);
|
|
}
|
|
if (elem != NULL) {
|
|
elem->value = sp[-1];
|
|
} else {
|
|
mp_store_attr(sp[0], qst, sp[-1]);
|
|
}
|
|
sp -= 2;
|
|
ip++;
|
|
DISPATCH();
|
|
}
|
|
#endif
|
|
|
|
ENTRY(MP_BC_STORE_SUBSCR):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_subscr(sp[-1], sp[0], sp[-2]);
|
|
sp -= 3;
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_DELETE_FAST): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
if (fastn[-unum] == MP_OBJ_NULL) {
|
|
goto local_name_error;
|
|
}
|
|
fastn[-unum] = MP_OBJ_NULL;
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_DELETE_DEREF): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
if (mp_obj_cell_get(fastn[-unum]) == MP_OBJ_NULL) {
|
|
goto local_name_error;
|
|
}
|
|
mp_obj_cell_set(fastn[-unum], MP_OBJ_NULL);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_DELETE_NAME): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_delete_name(qst);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_DELETE_GLOBAL): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_delete_global(qst);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_DUP_TOP): {
|
|
mp_obj_t top = TOP();
|
|
PUSH(top);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_DUP_TOP_TWO):
|
|
sp += 2;
|
|
sp[0] = sp[-2];
|
|
sp[-1] = sp[-3];
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_POP_TOP):
|
|
sp -= 1;
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_ROT_TWO): {
|
|
mp_obj_t top = sp[0];
|
|
sp[0] = sp[-1];
|
|
sp[-1] = top;
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_ROT_THREE): {
|
|
mp_obj_t top = sp[0];
|
|
sp[0] = sp[-1];
|
|
sp[-1] = sp[-2];
|
|
sp[-2] = top;
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_JUMP): {
|
|
DECODE_SLABEL;
|
|
ip += slab;
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_POP_JUMP_IF_TRUE): {
|
|
DECODE_SLABEL;
|
|
if (mp_obj_is_true(POP())) {
|
|
ip += slab;
|
|
}
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_POP_JUMP_IF_FALSE): {
|
|
DECODE_SLABEL;
|
|
if (!mp_obj_is_true(POP())) {
|
|
ip += slab;
|
|
}
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_JUMP_IF_TRUE_OR_POP): {
|
|
DECODE_SLABEL;
|
|
if (mp_obj_is_true(TOP())) {
|
|
ip += slab;
|
|
} else {
|
|
sp--;
|
|
}
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_JUMP_IF_FALSE_OR_POP): {
|
|
DECODE_SLABEL;
|
|
if (mp_obj_is_true(TOP())) {
|
|
sp--;
|
|
} else {
|
|
ip += slab;
|
|
}
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_SETUP_WITH): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
// stack: (..., ctx_mgr)
|
|
mp_obj_t obj = TOP();
|
|
mp_load_method(obj, MP_QSTR___exit__, sp);
|
|
mp_load_method(obj, MP_QSTR___enter__, sp + 2);
|
|
mp_obj_t ret = mp_call_method_n_kw(0, 0, sp + 2);
|
|
sp += 1;
|
|
PUSH_EXC_BLOCK(1);
|
|
PUSH(ret);
|
|
// stack: (..., __exit__, ctx_mgr, as_value)
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_WITH_CLEANUP): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
// Arriving here, there's "exception control block" on top of stack,
|
|
// and __exit__ method (with self) underneath it. Bytecode calls __exit__,
|
|
// and "deletes" it off stack, shifting "exception control block"
|
|
// to its place.
|
|
// The bytecode emitter ensures that there is enough space on the Python
|
|
// value stack to hold the __exit__ method plus an additional 4 entries.
|
|
if (TOP() == mp_const_none) {
|
|
// stack: (..., __exit__, ctx_mgr, None)
|
|
sp[1] = mp_const_none;
|
|
sp[2] = mp_const_none;
|
|
sp -= 2;
|
|
mp_call_method_n_kw(3, 0, sp);
|
|
SET_TOP(mp_const_none);
|
|
} else if (mp_obj_is_small_int(TOP())) {
|
|
// Getting here there are two distinct cases:
|
|
// - unwind return, stack: (..., __exit__, ctx_mgr, ret_val, SMALL_INT(-1))
|
|
// - unwind jump, stack: (..., __exit__, ctx_mgr, dest_ip, SMALL_INT(num_exc))
|
|
// For both cases we do exactly the same thing.
|
|
mp_obj_t data = sp[-1];
|
|
mp_obj_t cause = sp[0];
|
|
sp[-1] = mp_const_none;
|
|
sp[0] = mp_const_none;
|
|
sp[1] = mp_const_none;
|
|
mp_call_method_n_kw(3, 0, sp - 3);
|
|
sp[-3] = data;
|
|
sp[-2] = cause;
|
|
sp -= 2; // we removed (__exit__, ctx_mgr)
|
|
} else {
|
|
assert(mp_obj_is_exception_instance(TOP()));
|
|
// stack: (..., __exit__, ctx_mgr, exc_instance)
|
|
// Need to pass (exc_type, exc_instance, None) as arguments to __exit__.
|
|
sp[1] = sp[0];
|
|
sp[0] = MP_OBJ_FROM_PTR(mp_obj_get_type(sp[0]));
|
|
sp[2] = mp_const_none;
|
|
sp -= 2;
|
|
mp_obj_t ret_value = mp_call_method_n_kw(3, 0, sp);
|
|
if (mp_obj_is_true(ret_value)) {
|
|
// We need to silence/swallow the exception. This is done
|
|
// by popping the exception and the __exit__ handler and
|
|
// replacing it with None, which signals END_FINALLY to just
|
|
// execute the finally handler normally.
|
|
SET_TOP(mp_const_none);
|
|
} else {
|
|
// We need to re-raise the exception. We pop __exit__ handler
|
|
// by copying the exception instance down to the new top-of-stack.
|
|
sp[0] = sp[3];
|
|
}
|
|
}
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_UNWIND_JUMP): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_SLABEL;
|
|
PUSH((mp_obj_t)(mp_uint_t)(uintptr_t)(ip + slab)); // push destination ip for jump
|
|
PUSH((mp_obj_t)(mp_uint_t)(*ip)); // push number of exception handlers to unwind (0x80 bit set if we also need to pop stack)
|
|
unwind_jump:;
|
|
mp_uint_t unum = (mp_uint_t)POP(); // get number of exception handlers to unwind
|
|
while ((unum & 0x7f) > 0) {
|
|
unum -= 1;
|
|
assert(exc_sp >= exc_stack);
|
|
if (MP_TAGPTR_TAG1(exc_sp->val_sp) && exc_sp->handler > ip) {
|
|
// Getting here the stack looks like:
|
|
// (..., X, dest_ip)
|
|
// where X is pointed to by exc_sp->val_sp and in the case
|
|
// of a "with" block contains the context manager info.
|
|
// We're going to run "finally" code as a coroutine
|
|
// (not calling it recursively). Set up a sentinel
|
|
// on the stack so it can return back to us when it is
|
|
// done (when WITH_CLEANUP or END_FINALLY reached).
|
|
// The sentinel is the number of exception handlers left to
|
|
// unwind, which is a non-negative integer.
|
|
PUSH(MP_OBJ_NEW_SMALL_INT(unum));
|
|
ip = exc_sp->handler; // get exception handler byte code address
|
|
exc_sp--; // pop exception handler
|
|
goto dispatch_loop; // run the exception handler
|
|
}
|
|
POP_EXC_BLOCK();
|
|
}
|
|
ip = (const byte*)MP_OBJ_TO_PTR(POP()); // pop destination ip for jump
|
|
if (unum != 0) {
|
|
// pop the exhausted iterator
|
|
sp -= MP_OBJ_ITER_BUF_NSLOTS;
|
|
}
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_SETUP_EXCEPT):
|
|
ENTRY(MP_BC_SETUP_FINALLY): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
#if SELECTIVE_EXC_IP
|
|
PUSH_EXC_BLOCK((code_state->ip[-1] == MP_BC_SETUP_FINALLY) ? 1 : 0);
|
|
#else
|
|
PUSH_EXC_BLOCK((code_state->ip[0] == MP_BC_SETUP_FINALLY) ? 1 : 0);
|
|
#endif
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_END_FINALLY):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
// if TOS is None, just pops it and continues
|
|
// if TOS is an integer, finishes coroutine and returns control to caller
|
|
// if TOS is an exception, reraises the exception
|
|
if (TOP() == mp_const_none) {
|
|
assert(exc_sp >= exc_stack);
|
|
POP_EXC_BLOCK();
|
|
sp--;
|
|
} else if (mp_obj_is_small_int(TOP())) {
|
|
// We finished "finally" coroutine and now dispatch back
|
|
// to our caller, based on TOS value
|
|
mp_int_t cause = MP_OBJ_SMALL_INT_VALUE(POP());
|
|
if (cause < 0) {
|
|
// A negative cause indicates unwind return
|
|
goto unwind_return;
|
|
} else {
|
|
// Otherwise it's an unwind jump and we must push as a raw
|
|
// number the number of exception handlers to unwind
|
|
PUSH((mp_obj_t)cause);
|
|
goto unwind_jump;
|
|
}
|
|
} else {
|
|
assert(mp_obj_is_exception_instance(TOP()));
|
|
RAISE(TOP());
|
|
}
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_GET_ITER):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
SET_TOP(mp_getiter(TOP(), NULL));
|
|
DISPATCH();
|
|
|
|
// An iterator for a for-loop takes MP_OBJ_ITER_BUF_NSLOTS slots on
|
|
// the Python value stack. These slots are either used to store the
|
|
// iterator object itself, or the first slot is MP_OBJ_NULL and
|
|
// the second slot holds a reference to the iterator object.
|
|
ENTRY(MP_BC_GET_ITER_STACK): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_t obj = TOP();
|
|
mp_obj_iter_buf_t *iter_buf = (mp_obj_iter_buf_t*)sp;
|
|
sp += MP_OBJ_ITER_BUF_NSLOTS - 1;
|
|
obj = mp_getiter(obj, iter_buf);
|
|
if (obj != MP_OBJ_FROM_PTR(iter_buf)) {
|
|
// Iterator didn't use the stack so indicate that with MP_OBJ_NULL.
|
|
sp[-MP_OBJ_ITER_BUF_NSLOTS + 1] = MP_OBJ_NULL;
|
|
sp[-MP_OBJ_ITER_BUF_NSLOTS + 2] = obj;
|
|
}
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_FOR_ITER): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_ULABEL; // the jump offset if iteration finishes; for labels are always forward
|
|
code_state->sp = sp;
|
|
mp_obj_t obj;
|
|
if (sp[-MP_OBJ_ITER_BUF_NSLOTS + 1] == MP_OBJ_NULL) {
|
|
obj = sp[-MP_OBJ_ITER_BUF_NSLOTS + 2];
|
|
} else {
|
|
obj = MP_OBJ_FROM_PTR(&sp[-MP_OBJ_ITER_BUF_NSLOTS + 1]);
|
|
}
|
|
mp_obj_t value = mp_iternext_allow_raise(obj);
|
|
if (value == MP_OBJ_STOP_ITERATION) {
|
|
sp -= MP_OBJ_ITER_BUF_NSLOTS; // pop the exhausted iterator
|
|
ip += ulab; // jump to after for-block
|
|
} else {
|
|
PUSH(value); // push the next iteration value
|
|
#if MICROPY_PY_SYS_SETTRACE
|
|
// LINE event should trigger for every iteration so invalidate last trigger
|
|
if (code_state->frame) {
|
|
code_state->frame->lineno = 0;
|
|
}
|
|
#endif
|
|
}
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_POP_EXCEPT_JUMP): {
|
|
assert(exc_sp >= exc_stack);
|
|
POP_EXC_BLOCK();
|
|
DECODE_ULABEL;
|
|
ip += ulab;
|
|
DISPATCH_WITH_PEND_EXC_CHECK();
|
|
}
|
|
|
|
ENTRY(MP_BC_BUILD_TUPLE): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
sp -= unum - 1;
|
|
SET_TOP(mp_obj_new_tuple(unum, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_BUILD_LIST): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
sp -= unum - 1;
|
|
SET_TOP(mp_obj_new_list(unum, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_BUILD_MAP): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
PUSH(mp_obj_new_dict(unum));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_STORE_MAP):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
sp -= 2;
|
|
mp_obj_dict_store(sp[0], sp[2], sp[1]);
|
|
DISPATCH();
|
|
|
|
#if MICROPY_PY_BUILTINS_SET
|
|
ENTRY(MP_BC_BUILD_SET): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
sp -= unum - 1;
|
|
SET_TOP(mp_obj_new_set(unum, sp));
|
|
DISPATCH();
|
|
}
|
|
#endif
|
|
|
|
#if MICROPY_PY_BUILTINS_SLICE
|
|
ENTRY(MP_BC_BUILD_SLICE): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_t step = mp_const_none;
|
|
if (*ip++ == 3) {
|
|
// 3-argument slice includes step
|
|
step = POP();
|
|
}
|
|
mp_obj_t stop = POP();
|
|
mp_obj_t start = TOP();
|
|
SET_TOP(mp_obj_new_slice(start, stop, step));
|
|
DISPATCH();
|
|
}
|
|
#endif
|
|
|
|
ENTRY(MP_BC_STORE_COMP): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
mp_obj_t obj = sp[-(unum >> 2)];
|
|
if ((unum & 3) == 0) {
|
|
mp_obj_list_append(obj, sp[0]);
|
|
sp--;
|
|
} else if (!MICROPY_PY_BUILTINS_SET || (unum & 3) == 1) {
|
|
mp_obj_dict_store(obj, sp[0], sp[-1]);
|
|
sp -= 2;
|
|
#if MICROPY_PY_BUILTINS_SET
|
|
} else {
|
|
mp_obj_set_store(obj, sp[0]);
|
|
sp--;
|
|
#endif
|
|
}
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_UNPACK_SEQUENCE): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
mp_unpack_sequence(sp[0], unum, sp);
|
|
sp += unum - 1;
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_UNPACK_EX): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
mp_unpack_ex(sp[0], unum, sp);
|
|
sp += (unum & 0xff) + ((unum >> 8) & 0xff);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_MAKE_FUNCTION): {
|
|
DECODE_PTR;
|
|
PUSH(mp_make_function_from_raw_code(ptr, MP_OBJ_NULL, MP_OBJ_NULL));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_MAKE_FUNCTION_DEFARGS): {
|
|
DECODE_PTR;
|
|
// Stack layout: def_tuple def_dict <- TOS
|
|
mp_obj_t def_dict = POP();
|
|
SET_TOP(mp_make_function_from_raw_code(ptr, TOP(), def_dict));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_MAKE_CLOSURE): {
|
|
DECODE_PTR;
|
|
size_t n_closed_over = *ip++;
|
|
// Stack layout: closed_overs <- TOS
|
|
sp -= n_closed_over - 1;
|
|
SET_TOP(mp_make_closure_from_raw_code(ptr, n_closed_over, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_MAKE_CLOSURE_DEFARGS): {
|
|
DECODE_PTR;
|
|
size_t n_closed_over = *ip++;
|
|
// Stack layout: def_tuple def_dict closed_overs <- TOS
|
|
sp -= 2 + n_closed_over - 1;
|
|
SET_TOP(mp_make_closure_from_raw_code(ptr, 0x100 | n_closed_over, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_CALL_FUNCTION): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
// unum & 0xff == n_positional
|
|
// (unum >> 8) & 0xff == n_keyword
|
|
sp -= (unum & 0xff) + ((unum >> 7) & 0x1fe);
|
|
#if MICROPY_STACKLESS
|
|
if (mp_obj_get_type(*sp) == &mp_type_fun_bc) {
|
|
code_state->ip = ip;
|
|
code_state->sp = sp;
|
|
code_state->exc_sp = MP_TAGPTR_MAKE(exc_sp, 0);
|
|
mp_code_state_t *new_state = mp_obj_fun_bc_prepare_codestate(*sp, unum & 0xff, (unum >> 8) & 0xff, sp + 1);
|
|
#if !MICROPY_ENABLE_PYSTACK
|
|
if (new_state == NULL) {
|
|
// Couldn't allocate codestate on heap: in the strict case raise
|
|
// an exception, otherwise just fall through to stack allocation.
|
|
#if MICROPY_STACKLESS_STRICT
|
|
deep_recursion_error:
|
|
mp_raise_recursion_depth();
|
|
#endif
|
|
} else
|
|
#endif
|
|
{
|
|
new_state->prev = code_state;
|
|
code_state = new_state;
|
|
nlr_pop();
|
|
goto run_code_state;
|
|
}
|
|
}
|
|
#endif
|
|
SET_TOP(mp_call_function_n_kw(*sp, unum & 0xff, (unum >> 8) & 0xff, sp + 1));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_CALL_FUNCTION_VAR_KW): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
// unum & 0xff == n_positional
|
|
// (unum >> 8) & 0xff == n_keyword
|
|
// We have following stack layout here:
|
|
// fun arg0 arg1 ... kw0 val0 kw1 val1 ... seq dict <- TOS
|
|
sp -= (unum & 0xff) + ((unum >> 7) & 0x1fe) + 2;
|
|
#if MICROPY_STACKLESS
|
|
if (mp_obj_get_type(*sp) == &mp_type_fun_bc) {
|
|
code_state->ip = ip;
|
|
code_state->sp = sp;
|
|
code_state->exc_sp = MP_TAGPTR_MAKE(exc_sp, 0);
|
|
|
|
mp_call_args_t out_args;
|
|
mp_call_prepare_args_n_kw_var(false, unum, sp, &out_args);
|
|
|
|
mp_code_state_t *new_state = mp_obj_fun_bc_prepare_codestate(out_args.fun,
|
|
out_args.n_args, out_args.n_kw, out_args.args);
|
|
#if !MICROPY_ENABLE_PYSTACK
|
|
// Freeing args at this point does not follow a LIFO order so only do it if
|
|
// pystack is not enabled. For pystack, they are freed when code_state is.
|
|
mp_nonlocal_free(out_args.args, out_args.n_alloc * sizeof(mp_obj_t));
|
|
#endif
|
|
#if !MICROPY_ENABLE_PYSTACK
|
|
if (new_state == NULL) {
|
|
// Couldn't allocate codestate on heap: in the strict case raise
|
|
// an exception, otherwise just fall through to stack allocation.
|
|
#if MICROPY_STACKLESS_STRICT
|
|
goto deep_recursion_error;
|
|
#endif
|
|
} else
|
|
#endif
|
|
{
|
|
new_state->prev = code_state;
|
|
code_state = new_state;
|
|
nlr_pop();
|
|
goto run_code_state;
|
|
}
|
|
}
|
|
#endif
|
|
SET_TOP(mp_call_method_n_kw_var(false, unum, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_CALL_METHOD): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
// unum & 0xff == n_positional
|
|
// (unum >> 8) & 0xff == n_keyword
|
|
sp -= (unum & 0xff) + ((unum >> 7) & 0x1fe) + 1;
|
|
#if MICROPY_STACKLESS
|
|
if (mp_obj_get_type(*sp) == &mp_type_fun_bc) {
|
|
code_state->ip = ip;
|
|
code_state->sp = sp;
|
|
code_state->exc_sp = MP_TAGPTR_MAKE(exc_sp, 0);
|
|
|
|
size_t n_args = unum & 0xff;
|
|
size_t n_kw = (unum >> 8) & 0xff;
|
|
int adjust = (sp[1] == MP_OBJ_NULL) ? 0 : 1;
|
|
|
|
mp_code_state_t *new_state = mp_obj_fun_bc_prepare_codestate(*sp, n_args + adjust, n_kw, sp + 2 - adjust);
|
|
#if !MICROPY_ENABLE_PYSTACK
|
|
if (new_state == NULL) {
|
|
// Couldn't allocate codestate on heap: in the strict case raise
|
|
// an exception, otherwise just fall through to stack allocation.
|
|
#if MICROPY_STACKLESS_STRICT
|
|
goto deep_recursion_error;
|
|
#endif
|
|
} else
|
|
#endif
|
|
{
|
|
new_state->prev = code_state;
|
|
code_state = new_state;
|
|
nlr_pop();
|
|
goto run_code_state;
|
|
}
|
|
}
|
|
#endif
|
|
SET_TOP(mp_call_method_n_kw(unum & 0xff, (unum >> 8) & 0xff, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_CALL_METHOD_VAR_KW): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_UINT;
|
|
// unum & 0xff == n_positional
|
|
// (unum >> 8) & 0xff == n_keyword
|
|
// We have following stack layout here:
|
|
// fun self arg0 arg1 ... kw0 val0 kw1 val1 ... seq dict <- TOS
|
|
sp -= (unum & 0xff) + ((unum >> 7) & 0x1fe) + 3;
|
|
#if MICROPY_STACKLESS
|
|
if (mp_obj_get_type(*sp) == &mp_type_fun_bc) {
|
|
code_state->ip = ip;
|
|
code_state->sp = sp;
|
|
code_state->exc_sp = MP_TAGPTR_MAKE(exc_sp, 0);
|
|
|
|
mp_call_args_t out_args;
|
|
mp_call_prepare_args_n_kw_var(true, unum, sp, &out_args);
|
|
|
|
mp_code_state_t *new_state = mp_obj_fun_bc_prepare_codestate(out_args.fun,
|
|
out_args.n_args, out_args.n_kw, out_args.args);
|
|
#if !MICROPY_ENABLE_PYSTACK
|
|
// Freeing args at this point does not follow a LIFO order so only do it if
|
|
// pystack is not enabled. For pystack, they are freed when code_state is.
|
|
mp_nonlocal_free(out_args.args, out_args.n_alloc * sizeof(mp_obj_t));
|
|
#endif
|
|
#if !MICROPY_ENABLE_PYSTACK
|
|
if (new_state == NULL) {
|
|
// Couldn't allocate codestate on heap: in the strict case raise
|
|
// an exception, otherwise just fall through to stack allocation.
|
|
#if MICROPY_STACKLESS_STRICT
|
|
goto deep_recursion_error;
|
|
#endif
|
|
} else
|
|
#endif
|
|
{
|
|
new_state->prev = code_state;
|
|
code_state = new_state;
|
|
nlr_pop();
|
|
goto run_code_state;
|
|
}
|
|
}
|
|
#endif
|
|
SET_TOP(mp_call_method_n_kw_var(true, unum, sp));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_RETURN_VALUE):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
unwind_return:
|
|
// Search for and execute finally handlers that aren't already active
|
|
while (exc_sp >= exc_stack) {
|
|
if (MP_TAGPTR_TAG1(exc_sp->val_sp) && exc_sp->handler > ip) {
|
|
// Found a finally handler that isn't active.
|
|
// Getting here the stack looks like:
|
|
// (..., X, [iter0, iter1, ...,] ret_val)
|
|
// where X is pointed to by exc_sp->val_sp and in the case
|
|
// of a "with" block contains the context manager info.
|
|
// There may be 0 or more for-iterators between X and the
|
|
// return value, and these must be removed before control can
|
|
// pass to the finally code. We simply copy the ret_value down
|
|
// over these iterators, if they exist. If they don't then the
|
|
// following is a null operation.
|
|
mp_obj_t *finally_sp = MP_TAGPTR_PTR(exc_sp->val_sp);
|
|
finally_sp[1] = sp[0];
|
|
sp = &finally_sp[1];
|
|
// We're going to run "finally" code as a coroutine
|
|
// (not calling it recursively). Set up a sentinel
|
|
// on a stack so it can return back to us when it is
|
|
// done (when WITH_CLEANUP or END_FINALLY reached).
|
|
PUSH(MP_OBJ_NEW_SMALL_INT(-1));
|
|
ip = exc_sp->handler;
|
|
POP_EXC_BLOCK();
|
|
goto dispatch_loop;
|
|
}
|
|
POP_EXC_BLOCK();
|
|
}
|
|
nlr_pop();
|
|
code_state->sp = sp;
|
|
assert(exc_sp == exc_stack - 1);
|
|
MICROPY_VM_HOOK_RETURN
|
|
#if MICROPY_STACKLESS
|
|
if (code_state->prev != NULL) {
|
|
mp_obj_t res = *sp;
|
|
mp_globals_set(code_state->old_globals);
|
|
mp_code_state_t *new_code_state = code_state->prev;
|
|
#if MICROPY_ENABLE_PYSTACK
|
|
// Free code_state, and args allocated by mp_call_prepare_args_n_kw_var
|
|
// (The latter is implicitly freed when using pystack due to its LIFO nature.)
|
|
// The sizeof in the following statement does not include the size of the variable
|
|
// part of the struct. This arg is anyway not used if pystack is enabled.
|
|
mp_nonlocal_free(code_state, sizeof(mp_code_state_t));
|
|
#endif
|
|
code_state = new_code_state;
|
|
*code_state->sp = res;
|
|
goto run_code_state_from_return;
|
|
}
|
|
#endif
|
|
FRAME_LEAVE();
|
|
return MP_VM_RETURN_NORMAL;
|
|
|
|
ENTRY(MP_BC_RAISE_VARARGS): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_uint_t unum = *ip;
|
|
mp_obj_t obj;
|
|
if (unum == 2) {
|
|
mp_warning(NULL, "exception chaining not supported");
|
|
// ignore (pop) "from" argument
|
|
sp--;
|
|
}
|
|
if (unum == 0) {
|
|
// search for the inner-most previous exception, to reraise it
|
|
obj = MP_OBJ_NULL;
|
|
for (mp_exc_stack_t *e = exc_sp; e >= exc_stack; e--) {
|
|
if (e->prev_exc != NULL) {
|
|
obj = MP_OBJ_FROM_PTR(e->prev_exc);
|
|
break;
|
|
}
|
|
}
|
|
if (obj == MP_OBJ_NULL) {
|
|
obj = mp_obj_new_exception_msg(&mp_type_RuntimeError, "no active exception to reraise");
|
|
RAISE(obj);
|
|
}
|
|
} else {
|
|
obj = TOP();
|
|
}
|
|
obj = mp_make_raise_obj(obj);
|
|
RAISE(obj);
|
|
}
|
|
|
|
ENTRY(MP_BC_YIELD_VALUE):
|
|
yield:
|
|
nlr_pop();
|
|
code_state->ip = ip;
|
|
code_state->sp = sp;
|
|
code_state->exc_sp = MP_TAGPTR_MAKE(exc_sp, 0);
|
|
FRAME_LEAVE();
|
|
return MP_VM_RETURN_YIELD;
|
|
|
|
ENTRY(MP_BC_YIELD_FROM): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
//#define EXC_MATCH(exc, type) mp_obj_is_type(exc, type)
|
|
#define EXC_MATCH(exc, type) mp_obj_exception_match(exc, type)
|
|
#define GENERATOR_EXIT_IF_NEEDED(t) if (t != MP_OBJ_NULL && EXC_MATCH(t, MP_OBJ_FROM_PTR(&mp_type_GeneratorExit))) { mp_obj_t raise_t = mp_make_raise_obj(t); RAISE(raise_t); }
|
|
mp_vm_return_kind_t ret_kind;
|
|
mp_obj_t send_value = POP();
|
|
mp_obj_t t_exc = MP_OBJ_NULL;
|
|
mp_obj_t ret_value;
|
|
code_state->sp = sp; // Save sp because it's needed if mp_resume raises StopIteration
|
|
if (inject_exc != MP_OBJ_NULL) {
|
|
t_exc = inject_exc;
|
|
inject_exc = MP_OBJ_NULL;
|
|
ret_kind = mp_resume(TOP(), MP_OBJ_NULL, t_exc, &ret_value);
|
|
} else {
|
|
ret_kind = mp_resume(TOP(), send_value, MP_OBJ_NULL, &ret_value);
|
|
}
|
|
|
|
if (ret_kind == MP_VM_RETURN_YIELD) {
|
|
ip--;
|
|
PUSH(ret_value);
|
|
goto yield;
|
|
} else if (ret_kind == MP_VM_RETURN_NORMAL) {
|
|
// Pop exhausted gen
|
|
sp--;
|
|
if (ret_value == MP_OBJ_STOP_ITERATION) {
|
|
// Optimize StopIteration
|
|
// TODO: get StopIteration's value
|
|
PUSH(mp_const_none);
|
|
} else {
|
|
PUSH(ret_value);
|
|
}
|
|
|
|
// If we injected GeneratorExit downstream, then even
|
|
// if it was swallowed, we re-raise GeneratorExit
|
|
GENERATOR_EXIT_IF_NEEDED(t_exc);
|
|
DISPATCH();
|
|
} else {
|
|
assert(ret_kind == MP_VM_RETURN_EXCEPTION);
|
|
// Pop exhausted gen
|
|
sp--;
|
|
if (EXC_MATCH(ret_value, MP_OBJ_FROM_PTR(&mp_type_StopIteration))) {
|
|
PUSH(mp_obj_exception_get_value(ret_value));
|
|
// If we injected GeneratorExit downstream, then even
|
|
// if it was swallowed, we re-raise GeneratorExit
|
|
GENERATOR_EXIT_IF_NEEDED(t_exc);
|
|
DISPATCH();
|
|
} else {
|
|
RAISE(ret_value);
|
|
}
|
|
}
|
|
}
|
|
|
|
ENTRY(MP_BC_IMPORT_NAME): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_obj_t obj = POP();
|
|
SET_TOP(mp_import_name(qst, obj, TOP()));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_IMPORT_FROM): {
|
|
FRAME_UPDATE();
|
|
MARK_EXC_IP_SELECTIVE();
|
|
DECODE_QSTR;
|
|
mp_obj_t obj = mp_import_from(TOP(), qst);
|
|
PUSH(obj);
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY(MP_BC_IMPORT_STAR):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_import_all(POP());
|
|
DISPATCH();
|
|
|
|
#if MICROPY_OPT_COMPUTED_GOTO
|
|
ENTRY(MP_BC_LOAD_CONST_SMALL_INT_MULTI):
|
|
PUSH(MP_OBJ_NEW_SMALL_INT((mp_int_t)ip[-1] - MP_BC_LOAD_CONST_SMALL_INT_MULTI - 16));
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_LOAD_FAST_MULTI):
|
|
obj_shared = fastn[MP_BC_LOAD_FAST_MULTI - (mp_int_t)ip[-1]];
|
|
goto load_check;
|
|
|
|
ENTRY(MP_BC_STORE_FAST_MULTI):
|
|
fastn[MP_BC_STORE_FAST_MULTI - (mp_int_t)ip[-1]] = POP();
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_UNARY_OP_MULTI):
|
|
MARK_EXC_IP_SELECTIVE();
|
|
SET_TOP(mp_unary_op(ip[-1] - MP_BC_UNARY_OP_MULTI, TOP()));
|
|
DISPATCH();
|
|
|
|
ENTRY(MP_BC_BINARY_OP_MULTI): {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_t rhs = POP();
|
|
mp_obj_t lhs = TOP();
|
|
SET_TOP(mp_binary_op(ip[-1] - MP_BC_BINARY_OP_MULTI, lhs, rhs));
|
|
DISPATCH();
|
|
}
|
|
|
|
ENTRY_DEFAULT:
|
|
MARK_EXC_IP_SELECTIVE();
|
|
#else
|
|
ENTRY_DEFAULT:
|
|
if (ip[-1] < MP_BC_LOAD_CONST_SMALL_INT_MULTI + 64) {
|
|
PUSH(MP_OBJ_NEW_SMALL_INT((mp_int_t)ip[-1] - MP_BC_LOAD_CONST_SMALL_INT_MULTI - 16));
|
|
DISPATCH();
|
|
} else if (ip[-1] < MP_BC_LOAD_FAST_MULTI + 16) {
|
|
obj_shared = fastn[MP_BC_LOAD_FAST_MULTI - (mp_int_t)ip[-1]];
|
|
goto load_check;
|
|
} else if (ip[-1] < MP_BC_STORE_FAST_MULTI + 16) {
|
|
fastn[MP_BC_STORE_FAST_MULTI - (mp_int_t)ip[-1]] = POP();
|
|
DISPATCH();
|
|
} else if (ip[-1] < MP_BC_UNARY_OP_MULTI + MP_UNARY_OP_NUM_BYTECODE) {
|
|
SET_TOP(mp_unary_op(ip[-1] - MP_BC_UNARY_OP_MULTI, TOP()));
|
|
DISPATCH();
|
|
} else if (ip[-1] < MP_BC_BINARY_OP_MULTI + MP_BINARY_OP_NUM_BYTECODE) {
|
|
mp_obj_t rhs = POP();
|
|
mp_obj_t lhs = TOP();
|
|
SET_TOP(mp_binary_op(ip[-1] - MP_BC_BINARY_OP_MULTI, lhs, rhs));
|
|
DISPATCH();
|
|
} else
|
|
#endif
|
|
{
|
|
|
|
mp_obj_t obj = mp_obj_new_exception_msg(&mp_type_NotImplementedError, "opcode");
|
|
nlr_pop();
|
|
code_state->state[0] = obj;
|
|
FRAME_LEAVE();
|
|
return MP_VM_RETURN_EXCEPTION;
|
|
}
|
|
|
|
#if !MICROPY_OPT_COMPUTED_GOTO
|
|
} // switch
|
|
#endif
|
|
|
|
pending_exception_check:
|
|
MICROPY_VM_HOOK_LOOP
|
|
|
|
#if MICROPY_ENABLE_SCHEDULER
|
|
// This is an inlined variant of mp_handle_pending
|
|
if (MP_STATE_VM(sched_state) == MP_SCHED_PENDING) {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_uint_t atomic_state = MICROPY_BEGIN_ATOMIC_SECTION();
|
|
mp_obj_t obj = MP_STATE_VM(mp_pending_exception);
|
|
if (obj != MP_OBJ_NULL) {
|
|
MP_STATE_VM(mp_pending_exception) = MP_OBJ_NULL;
|
|
if (!mp_sched_num_pending()) {
|
|
MP_STATE_VM(sched_state) = MP_SCHED_IDLE;
|
|
}
|
|
MICROPY_END_ATOMIC_SECTION(atomic_state);
|
|
RAISE(obj);
|
|
}
|
|
mp_handle_pending_tail(atomic_state);
|
|
}
|
|
#else
|
|
// This is an inlined variant of mp_handle_pending
|
|
if (MP_STATE_VM(mp_pending_exception) != MP_OBJ_NULL) {
|
|
MARK_EXC_IP_SELECTIVE();
|
|
mp_obj_t obj = MP_STATE_VM(mp_pending_exception);
|
|
MP_STATE_VM(mp_pending_exception) = MP_OBJ_NULL;
|
|
RAISE(obj);
|
|
}
|
|
#endif
|
|
|
|
#if MICROPY_PY_THREAD_GIL
|
|
#if MICROPY_PY_THREAD_GIL_VM_DIVISOR
|
|
if (--gil_divisor == 0)
|
|
#endif
|
|
{
|
|
#if MICROPY_PY_THREAD_GIL_VM_DIVISOR
|
|
gil_divisor = MICROPY_PY_THREAD_GIL_VM_DIVISOR;
|
|
#endif
|
|
#if MICROPY_ENABLE_SCHEDULER
|
|
// can only switch threads if the scheduler is unlocked
|
|
if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE)
|
|
#endif
|
|
{
|
|
MP_THREAD_GIL_EXIT();
|
|
MP_THREAD_GIL_ENTER();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
} // for loop
|
|
|
|
} else {
|
|
exception_handler:
|
|
// exception occurred
|
|
|
|
#if MICROPY_PY_SYS_EXC_INFO
|
|
MP_STATE_VM(cur_exception) = nlr.ret_val;
|
|
#endif
|
|
|
|
#if SELECTIVE_EXC_IP
|
|
// with selective ip, we store the ip 1 byte past the opcode, so move ptr back
|
|
code_state->ip -= 1;
|
|
#endif
|
|
|
|
if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(((mp_obj_base_t*)nlr.ret_val)->type), MP_OBJ_FROM_PTR(&mp_type_StopIteration))) {
|
|
if (code_state->ip) {
|
|
// check if it's a StopIteration within a for block
|
|
if (*code_state->ip == MP_BC_FOR_ITER) {
|
|
const byte *ip = code_state->ip + 1;
|
|
DECODE_ULABEL; // the jump offset if iteration finishes; for labels are always forward
|
|
code_state->ip = ip + ulab; // jump to after for-block
|
|
code_state->sp -= MP_OBJ_ITER_BUF_NSLOTS; // pop the exhausted iterator
|
|
goto outer_dispatch_loop; // continue with dispatch loop
|
|
} else if (*code_state->ip == MP_BC_YIELD_FROM) {
|
|
// StopIteration inside yield from call means return a value of
|
|
// yield from, so inject exception's value as yield from's result
|
|
// (Instead of stack pop then push we just replace exhausted gen with value)
|
|
*code_state->sp = mp_obj_exception_get_value(MP_OBJ_FROM_PTR(nlr.ret_val));
|
|
code_state->ip++; // yield from is over, move to next instruction
|
|
goto outer_dispatch_loop; // continue with dispatch loop
|
|
}
|
|
}
|
|
}
|
|
|
|
#if MICROPY_PY_SYS_SETTRACE
|
|
// Exceptions are traced here
|
|
if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(((mp_obj_base_t*)nlr.ret_val)->type), MP_OBJ_FROM_PTR(&mp_type_Exception))) {
|
|
TRACE_TICK(code_state->ip, code_state->sp, true /* yes, it's an exception */);
|
|
}
|
|
#endif
|
|
|
|
#if MICROPY_STACKLESS
|
|
unwind_loop:
|
|
#endif
|
|
// Set traceback info (file and line number) where the exception occurred, but not for:
|
|
// - constant GeneratorExit object, because it's const
|
|
// - exceptions re-raised by END_FINALLY
|
|
// - exceptions re-raised explicitly by "raise"
|
|
if (nlr.ret_val != &mp_const_GeneratorExit_obj
|
|
&& *code_state->ip != MP_BC_END_FINALLY
|
|
&& !(*code_state->ip == MP_BC_RAISE_VARARGS && code_state->ip[1] == 0)) {
|
|
const byte *ip = code_state->fun_bc->bytecode;
|
|
ip = mp_decode_uint_skip(ip); // skip n_state
|
|
ip = mp_decode_uint_skip(ip); // skip n_exc_stack
|
|
ip++; // skip scope_params
|
|
ip++; // skip n_pos_args
|
|
ip++; // skip n_kwonly_args
|
|
ip++; // skip n_def_pos_args
|
|
size_t bc = code_state->ip - ip;
|
|
size_t code_info_size = mp_decode_uint_value(ip);
|
|
ip = mp_decode_uint_skip(ip); // skip code_info_size
|
|
bc -= code_info_size;
|
|
#if MICROPY_PERSISTENT_CODE
|
|
qstr block_name = ip[0] | (ip[1] << 8);
|
|
qstr source_file = ip[2] | (ip[3] << 8);
|
|
ip += 4;
|
|
#else
|
|
qstr block_name = mp_decode_uint_value(ip);
|
|
ip = mp_decode_uint_skip(ip);
|
|
qstr source_file = mp_decode_uint_value(ip);
|
|
ip = mp_decode_uint_skip(ip);
|
|
#endif
|
|
size_t source_line = mp_bytecode_get_source_line(ip, bc);
|
|
mp_obj_exception_add_traceback(MP_OBJ_FROM_PTR(nlr.ret_val), source_file, source_line, block_name);
|
|
}
|
|
|
|
while (exc_sp >= exc_stack && exc_sp->handler <= code_state->ip) {
|
|
|
|
// nested exception
|
|
|
|
assert(exc_sp >= exc_stack);
|
|
|
|
// TODO make a proper message for nested exception
|
|
// at the moment we are just raising the very last exception (the one that caused the nested exception)
|
|
|
|
// move up to previous exception handler
|
|
POP_EXC_BLOCK();
|
|
}
|
|
|
|
if (exc_sp >= exc_stack) {
|
|
// catch exception and pass to byte code
|
|
code_state->ip = exc_sp->handler;
|
|
mp_obj_t *sp = MP_TAGPTR_PTR(exc_sp->val_sp);
|
|
// save this exception in the stack so it can be used in a reraise, if needed
|
|
exc_sp->prev_exc = nlr.ret_val;
|
|
// push exception object so it can be handled by bytecode
|
|
PUSH(MP_OBJ_FROM_PTR(nlr.ret_val));
|
|
code_state->sp = sp;
|
|
|
|
#if MICROPY_STACKLESS
|
|
} else if (code_state->prev != NULL) {
|
|
mp_globals_set(code_state->old_globals);
|
|
mp_code_state_t *new_code_state = code_state->prev;
|
|
#if MICROPY_ENABLE_PYSTACK
|
|
// Free code_state, and args allocated by mp_call_prepare_args_n_kw_var
|
|
// (The latter is implicitly freed when using pystack due to its LIFO nature.)
|
|
// The sizeof in the following statement does not include the size of the variable
|
|
// part of the struct. This arg is anyway not used if pystack is enabled.
|
|
mp_nonlocal_free(code_state, sizeof(mp_code_state_t));
|
|
#endif
|
|
code_state = new_code_state;
|
|
size_t n_state = mp_decode_uint_value(code_state->fun_bc->bytecode);
|
|
fastn = &code_state->state[n_state - 1];
|
|
exc_stack = (mp_exc_stack_t*)(code_state->state + n_state);
|
|
// variables that are visible to the exception handler (declared volatile)
|
|
exc_sp = MP_TAGPTR_PTR(code_state->exc_sp); // stack grows up, exc_sp points to top of stack
|
|
goto unwind_loop;
|
|
|
|
#endif
|
|
} else {
|
|
// propagate exception to higher level
|
|
// Note: ip and sp don't have usable values at this point
|
|
code_state->state[0] = MP_OBJ_FROM_PTR(nlr.ret_val); // put exception here because sp is invalid
|
|
FRAME_LEAVE();
|
|
return MP_VM_RETURN_EXCEPTION;
|
|
}
|
|
}
|
|
}
|
|
}
|