stmhal: Initialise stack pointer correctly.
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
parent
2c180f7ccc
commit
eaaebf3291
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@ -167,11 +167,11 @@ STATIC void do_load(mp_obj_t module_obj, vstr_t *file) {
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mp_obj_t mp_builtin___import__(mp_uint_t n_args, mp_obj_t *args) {
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#if DEBUG_PRINT
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printf("__import__:\n");
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DEBUG_printf("__import__:\n");
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for (int i = 0; i < n_args; i++) {
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printf(" ");
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DEBUG_printf(" ");
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mp_obj_print(args[i], PRINT_REPR);
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printf("\n");
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DEBUG_printf("\n");
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}
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#endif
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@ -199,9 +199,9 @@ mp_obj_t mp_builtin___import__(mp_uint_t n_args, mp_obj_t *args) {
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mp_obj_t this_name_q = mp_obj_dict_get(mp_globals_get(), MP_OBJ_NEW_QSTR(MP_QSTR___name__));
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assert(this_name_q != MP_OBJ_NULL);
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#if DEBUG_PRINT
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printf("Current module: ");
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DEBUG_printf("Current module: ");
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mp_obj_print(this_name_q, PRINT_REPR);
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printf("\n");
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DEBUG_printf("\n");
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#endif
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mp_uint_t this_name_l;
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@ -183,7 +183,7 @@ STATIC void dump_args(const mp_obj_t *a, int sz) {
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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) {
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MP_STACK_CHECK();
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DEBUG_printf("Input n_args: %d, n_kw: %d\n", n_args, n_kw);
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DEBUG_printf("Input n_args: " UINT_FMT ", n_kw: " UINT_FMT "\n", n_args, n_kw);
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DEBUG_printf("Input pos args: ");
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dump_args(args, n_args);
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DEBUG_printf("Input kw args: ");
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10
py/runtime.c
10
py/runtime.c
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@ -190,7 +190,7 @@ void mp_delete_global(qstr qstr) {
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}
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mp_obj_t mp_unary_op(mp_uint_t op, mp_obj_t arg) {
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DEBUG_OP_printf("unary %d %p\n", op, arg);
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DEBUG_OP_printf("unary " UINT_FMT " %p\n", op, arg);
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if (MP_OBJ_IS_SMALL_INT(arg)) {
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mp_int_t val = MP_OBJ_SMALL_INT_VALUE(arg);
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@ -226,7 +226,7 @@ mp_obj_t mp_unary_op(mp_uint_t op, mp_obj_t arg) {
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}
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mp_obj_t mp_binary_op(mp_uint_t op, mp_obj_t lhs, mp_obj_t rhs) {
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DEBUG_OP_printf("binary %d %p %p\n", op, lhs, rhs);
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DEBUG_OP_printf("binary " UINT_FMT " %p %p\n", op, lhs, rhs);
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// TODO correctly distinguish inplace operators for mutable objects
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// lookup logic that CPython uses for +=:
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@ -523,7 +523,7 @@ mp_obj_t mp_call_function_n_kw(mp_obj_t fun_in, mp_uint_t n_args, mp_uint_t n_kw
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// TODO improve this: fun object can specify its type and we parse here the arguments,
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// passing to the function arrays of fixed and keyword arguments
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DEBUG_OP_printf("calling function %p(n_args=%d, n_kw=%d, args=%p)\n", fun_in, n_args, n_kw, args);
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DEBUG_OP_printf("calling function %p(n_args=" UINT_FMT ", n_kw=" UINT_FMT ", args=%p)\n", fun_in, n_args, n_kw, args);
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// get the type
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mp_obj_type_t *type = mp_obj_get_type(fun_in);
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@ -539,7 +539,7 @@ mp_obj_t mp_call_function_n_kw(mp_obj_t fun_in, mp_uint_t n_args, mp_uint_t n_kw
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// args contains: fun self/NULL arg(0) ... arg(n_args-2) arg(n_args-1) kw_key(0) kw_val(0) ... kw_key(n_kw-1) kw_val(n_kw-1)
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// if n_args==0 and n_kw==0 then there are only fun and self/NULL
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mp_obj_t mp_call_method_n_kw(mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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DEBUG_OP_printf("call method (fun=%p, self=%p, n_args=%u, n_kw=%u, args=%p)\n", args[0], args[1], n_args, n_kw, args);
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DEBUG_OP_printf("call method (fun=%p, self=%p, n_args=" UINT_FMT ", n_kw=" UINT_FMT ", args=%p)\n", args[0], args[1], n_args, n_kw, args);
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int adjust = (args[1] == NULL) ? 0 : 1;
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return mp_call_function_n_kw(args[0], n_args + adjust, n_kw, args + 2 - adjust);
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}
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@ -732,7 +732,7 @@ too_long:
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void mp_unpack_ex(mp_obj_t seq_in, mp_uint_t num_in, mp_obj_t *items) {
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mp_uint_t num_left = num_in & 0xff;
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mp_uint_t num_right = (num_in >> 8) & 0xff;
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DEBUG_OP_printf("unpack ex %d %d\n", num_left, num_right);
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DEBUG_OP_printf("unpack ex " UINT_FMT " " UINT_FMT "\n", num_left, num_right);
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mp_uint_t seq_len;
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if (MP_OBJ_IS_TYPE(seq_in, &mp_type_tuple) || MP_OBJ_IS_TYPE(seq_in, &mp_type_list)) {
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mp_obj_t *seq_items;
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@ -174,9 +174,9 @@ static const char fresh_readme_txt[] =
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int main(void) {
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// TODO disable JTAG
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// Stack limit should be less than real stack size, so we
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// had chance to recover from limit hit.
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mp_stack_set_limit(&_ram_end - &_heap_end - 512);
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// Stack limit should be less than real stack size, so we have a chance
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// to recover from limit hit. (Limit is measured in bytes.)
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mp_stack_set_limit((char*)&_ram_end - (char*)&_heap_end - 1024);
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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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@ -16,10 +16,10 @@ MEMORY
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_minimum_stack_size = 2K;
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_minimum_heap_size = 16K;
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/* top end of the stack */
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/*_stack_end = ORIGIN(RAM) + LENGTH(RAM);*/
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_estack = ORIGIN(RAM) + LENGTH(RAM) - 1;
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/* Define tho top end of the stack. The stack is full descending so begins just
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above last byte of RAM. Note that EABI requires the stack to be 8-byte
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aligned for a call. */
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_estack = ORIGIN(RAM) + LENGTH(RAM);
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/* RAM extents for the garbage collector */
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_ram_end = ORIGIN(RAM) + LENGTH(RAM);
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