Merge tag 'v1.9.1'2.0.0-alpha.0

Fixes for stmhal USB mass storage, lwIP bindings and VFS regressions

This release provides an important fix for the USB mass storage device in
the stmhal port by implementing the SCSI SYNCHRONIZE_CACHE command, which
is now require by some Operating Systems.  There are also fixes for the
lwIP bindings to improve non-blocking sockets and error codes.  The VFS has
some regressions fixed including the ability to statvfs the root.

All changes are listed below.

py core:
- modbuiltins: add core-provided version of input() function
- objstr: catch case of negative "maxsplit" arg to str.rsplit()
- persistentcode: allow to compile with complex numbers disabled
- objstr: allow to compile with obj-repr D, and unicode disabled
- modsys: allow to compile with obj-repr D and PY_ATTRTUPLE disabled
- provide mp_decode_uint_skip() to help reduce stack usage
- makeqstrdefs.py: make script run correctly with Python 2.6
- objstringio: if created from immutable object, follow copy on write policy

extmod:
- modlwip: connect: for non-blocking mode, return EINPROGRESS
- modlwip: fix error codes for duplicate calls to connect()
- modlwip: accept: fix error code for non-blocking mode
- vfs: allow to statvfs the root directory
- vfs: allow "buffering" and "encoding" args to VFS's open()
- modframebuf: fix signed/unsigned comparison pendantic warning

lib:
- libm: use isfinite instead of finitef, for C99 compatibility
- utils/interrupt_char: remove support for KBD_EXCEPTION disabled

tests:
- basics/string_rsplit: add tests for negative "maxsplit" argument
- float: convert "sys.exit()" to "raise SystemExit"
- float/builtin_float_minmax: PEP8 fixes
- basics: convert "sys.exit()" to "raise SystemExit"
- convert remaining "sys.exit()" to "raise SystemExit"

unix port:
- convert to use core-provided version of built-in import()
- Makefile: replace references to make with $(MAKE)

windows port:
- convert to use core-provided version of built-in import()

qemu-arm port:
- Makefile: adjust object-file lists to get correct dependencies
- enable micropython.mem_*() functions to allow more tests

stmhal port:
- boards: enable DAC for NUCLEO_F767ZI board
- add support for NUCLEO_F446RE board
- pass USB handler as parameter to allow more than one USB handler
- usb: use local USB handler variable in Start-of-Frame handler
- usb: make state for USB device private to top-level USB driver
- usbdev: for MSC implement SCSI SYNCHRONIZE_CACHE command
- convert from using stmhal's input() to core provided version

cc3200 port:
- convert from using stmhal's input() to core provided version

teensy port:
- convert from using stmhal's input() to core provided version

esp8266 port:
- Makefile: replace references to make with $(MAKE)
- Makefile: add clean-modules target
- convert from using stmhal's input() to core provided version

zephyr port:
- modusocket: getaddrinfo: Fix mp_obj_len() usage
- define MICROPY_PY_SYS_PLATFORM (to "zephyr")
- machine_pin: use native Zephyr types for Zephyr API calls

docs:
- machine.Pin: remove out_value() method
- machine.Pin: add on() and off() methods
- esp8266: consistently replace Pin.high/low methods with .on/off
- esp8266/quickref: polish Pin.on()/off() examples
- network: move confusingly-named cc3200 Server class to its reference
- uos: deconditionalize, remove minor port-specific details
- uos: move cc3200 port legacy VFS mounting functions to its ref doc
- machine: sort machine classes in logical order, not alphabetically
- network: first step to describe standard network class interface

examples:
- embedding: use core-provided KeyboardInterrupt object

1 files changed, 25 insertions, 24 deletions

diff --git a/py/objlist.c b/py/objlist.c
index fa76d8938..3fe39f76c 100644
--- a/py/objlist.c
+++ b/py/objlist.c
@@ -33,8 +33,8 @@
 #include "py/runtime.h"
 #include "py/stackctrl.h"
 
-STATIC mp_obj_t mp_obj_new_list_iterator(mp_obj_t list, mp_uint_t cur);
-STATIC mp_obj_list_t *list_new(mp_uint_t n);
+STATIC mp_obj_t mp_obj_new_list_iterator(mp_obj_t list, size_t cur, mp_obj_iter_buf_t *iter_buf);
+STATIC mp_obj_list_t *list_new(size_t n);
 STATIC mp_obj_t list_extend(mp_obj_t self_in, mp_obj_t arg_in);
 STATIC mp_obj_t list_pop(size_t n_args, const mp_obj_t *args);
 
@@ -50,7 +50,7 @@ STATIC void list_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t k
         kind = PRINT_REPR;
     }
     mp_print_str(print, "[");
-    for (mp_uint_t i = 0; i < o->len; i++) {
+    for (size_t i = 0; i < o->len; i++) {
         if (i > 0) {
             mp_print_str(print, ", ");
         }
@@ -60,7 +60,7 @@ STATIC void list_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t k
 }
 
 STATIC mp_obj_t list_extend_from_iter(mp_obj_t list, mp_obj_t iterable) {
-    mp_obj_t iter = mp_getiter(iterable);
+    mp_obj_t iter = mp_getiter(iterable, NULL);
     mp_obj_t item;
     while ((item = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
         mp_obj_list_append(list, item);
@@ -186,19 +186,19 @@ STATIC mp_obj_t list_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
             return MP_OBJ_FROM_PTR(res);
         }
 #endif
-        mp_uint_t index_val = mp_get_index(self->base.type, self->len, index, false);
+        size_t index_val = mp_get_index(self->base.type, self->len, index, false);
         return self->items[index_val];
     } else {
 #if MICROPY_PY_BUILTINS_SLICE
         if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
             mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
-            mp_check_self(MP_OBJ_IS_TYPE(value, &mp_type_list));
-            mp_obj_list_t *slice = MP_OBJ_TO_PTR(value);
+            size_t value_len; mp_obj_t *value_items;
+            mp_obj_get_array(value, &value_len, &value_items);
             mp_bound_slice_t slice_out;
             if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice_out)) {
                 mp_raise_NotImplementedError("");
             }
-            mp_int_t len_adj = slice->len - (slice_out.stop - slice_out.start);
+            mp_int_t len_adj = value_len - (slice_out.stop - slice_out.start);
             //printf("Len adj: %d\n", len_adj);
             if (len_adj > 0) {
                 if (self->len + len_adj > self->alloc) {
@@ -208,10 +208,10 @@ STATIC mp_obj_t list_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
                     self->alloc = self->len + len_adj;
                 }
                 mp_seq_replace_slice_grow_inplace(self->items, self->len,
-                    slice_out.start, slice_out.stop, slice->items, slice->len, len_adj, sizeof(*self->items));
+                    slice_out.start, slice_out.stop, value_items, value_len, len_adj, sizeof(*self->items));
             } else {
                 mp_seq_replace_slice_no_grow(self->items, self->len,
-                    slice_out.start, slice_out.stop, slice->items, slice->len, sizeof(*self->items));
+                    slice_out.start, slice_out.stop, value_items, value_len, sizeof(*self->items));
                 // Clear "freed" elements at the end of list
                 mp_seq_clear(self->items, self->len + len_adj, self->len, sizeof(*self->items));
                 // TODO: apply allocation policy re: alloc_size
@@ -225,8 +225,8 @@ STATIC mp_obj_t list_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
     }
 }
 
-STATIC mp_obj_t list_getiter(mp_obj_t o_in) {
-    return mp_obj_new_list_iterator(o_in, 0);
+STATIC mp_obj_t list_getiter(mp_obj_t o_in, mp_obj_iter_buf_t *iter_buf) {
+    return mp_obj_new_list_iterator(o_in, 0, iter_buf);
 }
 
 mp_obj_t mp_obj_list_append(mp_obj_t self_in, mp_obj_t arg) {
@@ -268,7 +268,7 @@ STATIC mp_obj_t list_pop(size_t n_args, const mp_obj_t *args) {
     if (self->len == 0) {
         mp_raise_IndexError("pop from empty list");
     }
-    mp_uint_t index = mp_get_index(self->base.type, self->len, n_args == 1 ? MP_OBJ_NEW_SMALL_INT(-1) : args[1], false);
+    size_t index = mp_get_index(self->base.type, self->len, n_args == 1 ? MP_OBJ_NEW_SMALL_INT(-1) : args[1], false);
     mp_obj_t ret = self->items[index];
     self->len -= 1;
     memmove(self->items + index, self->items + index + 1, (self->len - index) * sizeof(mp_obj_t));
@@ -374,7 +374,7 @@ STATIC mp_obj_t list_insert(mp_obj_t self_in, mp_obj_t idx, mp_obj_t obj) {
     if (index < 0) {
          index = 0;
     }
-    if ((mp_uint_t)index > self->len) {
+    if ((size_t)index > self->len) {
          index = self->len;
     }
 
@@ -451,7 +451,7 @@ const mp_obj_type_t mp_type_list = {
     .locals_dict = (mp_obj_dict_t*)&list_locals_dict,
 };
 
-void mp_obj_list_init(mp_obj_list_t *o, mp_uint_t n) {
+void mp_obj_list_init(mp_obj_list_t *o, size_t n) {
     o->base.type = &mp_type_list;
     o->alloc = n < LIST_MIN_ALLOC ? LIST_MIN_ALLOC : n;
     o->len = n;
@@ -459,29 +459,29 @@ void mp_obj_list_init(mp_obj_list_t *o, mp_uint_t n) {
     mp_seq_clear(o->items, n, o->alloc, sizeof(*o->items));
 }
 
-STATIC mp_obj_list_t *list_new(mp_uint_t n) {
+STATIC mp_obj_list_t *list_new(size_t n) {
     mp_obj_list_t *o = m_new_obj(mp_obj_list_t);
     mp_obj_list_init(o, n);
     return o;
 }
 
-mp_obj_t mp_obj_new_list(mp_uint_t n, mp_obj_t *items) {
+mp_obj_t mp_obj_new_list(size_t n, mp_obj_t *items) {
     mp_obj_list_t *o = list_new(n);
     if (items != NULL) {
-        for (mp_uint_t i = 0; i < n; i++) {
+        for (size_t i = 0; i < n; i++) {
             o->items[i] = items[i];
         }
     }
     return MP_OBJ_FROM_PTR(o);
 }
 
-void mp_obj_list_get(mp_obj_t self_in, mp_uint_t *len, mp_obj_t **items) {
+void mp_obj_list_get(mp_obj_t self_in, size_t *len, mp_obj_t **items) {
     mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
     *len = self->len;
     *items = self->items;
 }
 
-void mp_obj_list_set_len(mp_obj_t self_in, mp_uint_t len) {
+void mp_obj_list_set_len(mp_obj_t self_in, size_t len) {
     // trust that the caller knows what it's doing
     // TODO realloc if len got much smaller than alloc
     mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
@@ -490,7 +490,7 @@ void mp_obj_list_set_len(mp_obj_t self_in, mp_uint_t len) {
 
 void mp_obj_list_store(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
     mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
-    mp_uint_t i = mp_get_index(self->base.type, self->len, index, false);
+    size_t i = mp_get_index(self->base.type, self->len, index, false);
     self->items[i] = value;
 }
 
@@ -501,7 +501,7 @@ typedef struct _mp_obj_list_it_t {
     mp_obj_base_t base;
     mp_fun_1_t iternext;
     mp_obj_t list;
-    mp_uint_t cur;
+    size_t cur;
 } mp_obj_list_it_t;
 
 STATIC mp_obj_t list_it_iternext(mp_obj_t self_in) {
@@ -516,8 +516,9 @@ STATIC mp_obj_t list_it_iternext(mp_obj_t self_in) {
     }
 }
 
-mp_obj_t mp_obj_new_list_iterator(mp_obj_t list, mp_uint_t cur) {
-    mp_obj_list_it_t *o = m_new_obj(mp_obj_list_it_t);
+mp_obj_t mp_obj_new_list_iterator(mp_obj_t list, size_t cur, mp_obj_iter_buf_t *iter_buf) {
+    assert(sizeof(mp_obj_list_it_t) <= sizeof(mp_obj_iter_buf_t));
+    mp_obj_list_it_t *o = (mp_obj_list_it_t*)iter_buf;
     o->base.type = &mp_type_polymorph_iter;
     o->iternext = list_it_iternext;
     o->list = list;