TonBERRY/micropython
3
0
Fork 0
Code Pull Requests Activity

py/emitnative: Simplify layout and loading of native function prelude.

Browse Source 
Now native functions and native generators have similar behaviour: the
first machine-word of their code is an index to get to the prelude.  This
simplifies the handling of these types of functions, and also reduces the
size of the emitted native machine code by no longer requiring special code
at the start of the function to load a pointer to the prelude.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2024-02-16 16:53:47 +11:00
parent 9400229766
commit 6d403eb697
5 changed files with 38 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
py/bc.c
View File

@@ -336,9 +336,9 @@ void mp_setup_code_state(mp_code_state_t *code_state, size_t n_args, size_t n_kw
// On entry code_state should be allocated somewhere (stack/heap) and
// contain the following valid entries:
// - code_state->fun_bc should contain a pointer to the function object
// - code_state->ip should contain a pointer to the beginning of the prelude
// - code_state->n_state should be the number of objects in the local state
void mp_setup_code_state_native(mp_code_state_native_t *code_state, size_t n_args, size_t n_kw, const mp_obj_t *args) {
code_state->ip = mp_obj_fun_native_get_prelude_ptr(code_state->fun_bc);
code_state->sp = &code_state->state[0] - 1;
mp_setup_code_state_helper((mp_code_state_t *)code_state, n_args, n_kw, args);
}