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stmhal: Initialise stack pointer correctly.

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Stack is full descending and must be 8-byte aligned.  It must start off
pointing to just above the last byte of RAM.

Previously, stack started pointed to last byte of RAM (eg 0x2001ffff)
and so was not 8-byte aligned.  This caused a bug in combination with
alloca.

This patch also updates some debug printing code.

Addresses issue #872 (among many other undiscovered issues).
This commit is contained in:
Damien George
2014-09-23 10:59:05 +01:00
parent 2c180f7ccc
commit eaaebf3291
5 changed files with 18 additions and 18 deletions
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10
py/builtinimport.c
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@@ -167,11 +167,11 @@ STATIC void do_load(mp_obj_t module_obj, vstr_t *file) {
mp_obj_t mp_builtin___import__(mp_uint_t n_args, mp_obj_t *args) {
#if DEBUG_PRINT
printf("__import__:\n");
DEBUG_printf("__import__:\n");
for (int i = 0; i < n_args; i++) {
printf(" ");
DEBUG_printf(" ");
mp_obj_print(args[i], PRINT_REPR);
printf("\n");
DEBUG_printf("\n");
}
#endif
@@ -199,9 +199,9 @@ mp_obj_t mp_builtin___import__(mp_uint_t n_args, mp_obj_t *args) {
mp_obj_t this_name_q = mp_obj_dict_get(mp_globals_get(), MP_OBJ_NEW_QSTR(MP_QSTR___name__));
assert(this_name_q != MP_OBJ_NULL);
#if DEBUG_PRINT
printf("Current module: ");
DEBUG_printf("Current module: ");
mp_obj_print(this_name_q, PRINT_REPR);
printf("\n");
DEBUG_printf("\n");
#endif
mp_uint_t this_name_l;