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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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2
py/objfun.c
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@@ -183,7 +183,7 @@ STATIC void dump_args(const mp_obj_t *a, int sz) {
STATIC mp_obj_t fun_bc_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
MP_STACK_CHECK();
DEBUG_printf("Input n_args: %d, n_kw: %d\n", n_args, n_kw);
DEBUG_printf("Input n_args: " UINT_FMT ", n_kw: " UINT_FMT "\n", n_args, n_kw);
DEBUG_printf("Input pos args: ");
dump_args(args, n_args);
DEBUG_printf("Input kw args: ");