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Improve allocation of stack for byte code.

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This commit is contained in:
Damien 2013-11-05 22:16:22 +00:00
parent 03c9cfb015
commit 40fdfe3000
3 changed files with 12 additions and 7 deletions
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2
py/bc.h
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@ -94,5 +94,5 @@
#define PYBC_IMPORT_FROM (0xe1)
#define PYBC_IMPORT_STAR (0xe2)
py_obj_t py_execute_byte_code(const byte *code, const py_obj_t *args, uint n_args);
py_obj_t py_execute_byte_code(const byte *code, const py_obj_t *args, uint n_args, uint n_state);
bool py_execute_byte_code_2(const byte **ip_in_out, py_obj_t *fastn, py_obj_t **sp_in_out);

6
py/runtime.c
View File

@ -133,8 +133,8 @@ struct _py_obj_base_t {
} u_fun;
struct { // for O_FUN_BC
int n_args;
uint n_state;
byte *code;
uint len;
} u_fun_bc;
struct { // for O_FUN_ASM
int n_args;
@ -1474,8 +1474,8 @@ py_obj_t rt_make_function_from_id(int unique_code_id) {
case PY_CODE_BYTE:
o->kind = O_FUN_BC;
o->u_fun_bc.n_args = c->n_args;
o->u_fun_bc.n_state = c->n_locals + c->n_stack;
o->u_fun_bc.code = c->u_byte.code;
o->u_fun_bc.len = c->u_byte.len;
break;
case PY_CODE_NATIVE:
switch (c->n_args) {
@ -1660,7 +1660,7 @@ py_obj_t rt_call_function_n(py_obj_t fun, int n_args, const py_obj_t *args) {
goto bad_n_args;
}
DEBUG_OP_printf("calling byte code %p(n_args=%d)\n", o->u_fun_bc.code, n_args);
return py_execute_byte_code(o->u_fun_bc.code, args, n_args);
return py_execute_byte_code(o->u_fun_bc.code, args, n_args, o->u_fun_bc.n_state);
} else if (IS_O(fun, O_FUN_ASM)) {
py_obj_base_t *o = fun;

11
py/vm.c
View File

@ -21,14 +21,19 @@
#define POP() (*sp++)
// args are in reverse order in array
py_obj_t py_execute_byte_code(const byte *code, const py_obj_t *args, uint n_args) {
py_obj_t state[18]; // TODO allocate properly
py_obj_t py_execute_byte_code(const byte *code, const py_obj_t *args, uint n_args, uint n_state) {
py_obj_t temp_state[10]; // TODO allocate properly
py_obj_t *state = &temp_state[0];
py_obj_t *sp = &state[10];
if (n_state > 10) {
state = m_new(py_obj_t, n_state);
sp = &state[n_state];
}
// init args
for (int i = 0; i < n_args; i++) {
assert(i < 8);
state[i] = args[n_args - 1 - i];
}
py_obj_t *sp = &state[18];
const byte *ip = code;
if (py_execute_byte_code_2(&ip, &state[0], &sp)) {
// it shouldn't yield