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Make VM stack grow upwards, and so no reversed args arrays.

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Change state layout in VM so the stack starts at state[0] and grows
upwards.  Locals are at the top end of the state and number downwards.
This cleans up a lot of the interface connecting the VM to C: now all
functions that take an array of Micro Python objects are in order (ie no
longer in reverse).

Also clean up C API with keyword arguments (call_n and call_n_kw
replaced with single call method that takes keyword arguments).  And now
make_new takes keyword arguments.

emitnative.c has not yet been changed to comply with the new order of
stack layout.
This commit is contained in:
Damien George
2014-01-18 14:10:48 +00:00
parent 8655065f8c
commit 20006dbba9
28 changed files with 325 additions and 372 deletions
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6
py/emitnative.c
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@@ -1156,7 +1156,8 @@ static void emit_native_call_function(emit_t *emit, int n_positional, int n_keyw
vtype_kind_t vtype_fun;
emit_pre_pop_reg(emit, &vtype_fun, REG_ARG_1); // the function
assert(vtype_fun == VTYPE_PYOBJ);
emit_call_with_imm_arg(emit, RT_F_CALL_FUNCTION_N, rt_call_function_n, n_positional, REG_ARG_2);
// XXX rt_call_function_n now merged with rt_call_function_n_kw
//emit_call_with_imm_arg(emit, RT_F_CALL_FUNCTION_N, rt_call_function_n, n_positional, REG_ARG_2);
//}
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
@@ -1181,7 +1182,8 @@ static void emit_native_call_method(emit_t *emit, int n_positional, int n_keywor
*/
emit_pre(emit);
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_positional + 2); // pointer to items in reverse order, including meth and self
emit_call_with_imm_arg(emit, RT_F_CALL_METHOD_N, rt_call_method_n, n_positional, REG_ARG_1);
// XXX rt_call_method_n now merged with rt_call_method_n_kw
//emit_call_with_imm_arg(emit, RT_F_CALL_METHOD_N, rt_call_method_n, n_positional, REG_ARG_1);
//}
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}