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types fix, frame fix to work with runtime

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ProgramSnail 2024-11-01 20:54:48 +03:00
parent 26a42d4c81
commit 39715334c7
5 changed files with 92 additions and 176 deletions
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3
byterun/include/stack.h
View file

@ -30,5 +30,4 @@ void s_enter_f(struct State *s, char *func_ip, size_t params_sz,
void s_exit_f(struct State *s);
union VarT **var_by_category(struct State *s, enum VarCategory category,
int id);
void **var_by_category(struct State *s, enum VarCategory category, int id);

130
byterun/include/types.h
View file

@ -1,131 +1,50 @@
#pragma once
#include "../../runtime/runtime.h"
#include "../../runtime/runtime_common.h"
#include "parser.h"
#include <stdint.h>
// ------ Var ------
// ------ General ------
enum Type {
NIL_T = 0x00000000,
INT_T = 0x00000001,
BOX_T = 0x00000002,
STR_T = 0x00000003,
CLOJURE_T = 0x00000004,
ARRAY_T = 0x00000005,
SEXP_T = 0x00000006,
FUN_T = 0x00000007
STR_T = STRING_TAG,
ARRAY_T = ARRAY_TAG,
SEXP_T = SEXP_TAG,
CLOJURE_T = CLOSURE_TAG,
};
struct NilT { // AnyVarT too
uint32_t data_header;
};
struct IntT {
uint32_t data_header;
int32_t value;
};
struct BoxT {
uint32_t data_header;
struct NilT **value;
};
struct StrT {
uint32_t data_header; // param - is not const (0 for const, 1 for not const)
const char *value;
};
struct ClojureT { // TODO
uint32_t data_header;
char *fun_ip;
struct ArrayT *vars;
};
// struct ListT {
// uint32_t data_header;
// struct NilT *value;
// struct NilT *next;
// };
struct ArrayT {
uint32_t data_header;
struct NilT **values;
};
static const size_t MAX_ARRAY_SIZE = 0x11111110;
struct SExpT {
uint32_t data_header;
const char *tag;
struct NilT **values;
};
struct FunT {
uint32_t data_header;
char *fun_ip;
};
union VarT {
struct NilT nil;
struct IntT int_t;
struct BoxT box;
struct StrT str;
struct ClojureT clojure;
// struct ListT list;
struct ArrayT array;
struct SExpT sexp;
struct FunT fun;
};
// same to TAG in runtime
static inline enum Type dh_type(int data_header) {
return (enum Type)(data_header & 0x00000007);
}
// same to LEN in runtime
static inline int dh_param(int data_header) {
return (data_header & 0xFFFFFFF8) >> 3;
}
static inline union VarT *to_var(struct NilT *var) { return (union VarT *)var; }
// ------ Frame ------
// TODO: store boxed offsets instead
struct Frame {
struct NilT *ret; // store returned value
char *rp; // ret instruction pointer
struct Frame *prev_fp; // ret function frame pointer
void **params; // store arguments
void **locals; // store locals
void **end; // store locals
void *ret; // store returned value [gc pointer]
char *rp; // ret instruction pointer [not gc pointer]
size_t to_prev_fp_box; // ret function frame pointer [boxed value, not gc
// pointer]
size_t args_sz_box; // store arguments [boxed value, not gc pointer]
size_t locals_sz_box; // store locals [boxed value, not gc pointer]
};
static inline uint64_t frame_locals_sz(struct Frame *frame) {
return frame->locals - frame->params;
}
static inline uint64_t frame_params_sz(struct Frame *frame) {
return frame->end - frame->locals;
}
size_t frame_sz();
void **f_prev_fp(struct Frame *fp);
uint64_t f_locals_sz(struct Frame *fp);
uint64_t f_args_sz(struct Frame *fp);
void **f_locals(struct Frame *fp);
void **f_args(struct Frame *fp);
// ------ State ------
union StackValue {
union VarT *var;
union VarT **var_ptr;
struct Frame frame; // ??
char *addr;
};
// static inline StackValue *to_sv(void *var) { return (StackValue *)var; }
struct State {
void **stack; // vaid**
void **vp; // stack pointer
void **sp; // stack pointer
struct Frame *fp; // function frame pointer
char *ip; // instruction pointer
char *prev_ip; // prev instruction pointer
char *prev_ip; // prev instruction pointer (to remember jmp locations)
};
struct State init_state(bytefile *bf);
@ -137,12 +56,7 @@ enum VarCategory {
VAR_GLOBAL = 0,
VAR_LOCAL = 1,
VAR_ARGUMENT = 2,
VAR_C = 3 // TODO: constant ??
VAR_C = 3 // TODO: constants ??
};
static inline enum VarCategory to_var_category(uint8_t category) {
if (category > 3) {
failure("unexpected variable category");
}
return (enum VarCategory)category;
}
enum VarCategory to_var_category(uint8_t category);

12
byterun/src/interpreter.c
View file

@ -111,19 +111,19 @@ void run(bytefile *bf) {
case 9: // DUP
{ // guess
if (s.vp == s.stack || (s.fp != NULL && s.vp == s.fp->end)) {
if (s.sp == s.stack || (s.fp != NULL && s.sp == s.fp->end)) {
failure("can't DUP: no value on stack");
}
*s.vp = *(s.vp - 1);
++s.vp;
*s.sp = *(s.sp - 1);
++s.sp;
break;
}
case 10: // SWAP
{ // guess
struct NilT* v = *s.vp;
*s.vp = *(s.vp - 1);
*(s.vp - 1) = v;
struct NilT* v = *s.sp;
*s.sp = *(s.sp - 1);
*(s.sp - 1) = v;
}
break;

82
byterun/src/stack.c
View file

@ -4,12 +4,14 @@
extern size_t STACK_SIZE;
// ------ basic stack oprs ------
void s_push(struct State *s, void *val) {
if (s->vp == s->stack) {
if (s->sp == s->stack) {
failure("stack overflow");
}
--s->vp;
*s->vp = val;
--s->sp;
*s->sp = val;
}
void s_push_nil(struct State *s) {
@ -23,12 +25,12 @@ void s_pushn_nil(struct State *s, size_t n) {
}
void* s_pop(struct State *s) {
if (s->vp == s->stack + STACK_SIZE || (s->fp != NULL && s->vp == s->fp->end)) {
if (s->sp == s->stack + STACK_SIZE || (s->fp != NULL && s->sp == f_locals(s->fp))) {
failure("take: no var");
}
void* value = *s->vp;
*s->vp = NULL;
++s->vp;
void* value = *s->sp;
*s->sp = NULL;
++s->sp;
return value;
}
@ -41,70 +43,64 @@ void s_popn(struct State *s, size_t n) {
// ------ functions ------
// TODO
// |> param_0 ... param_n | frame[ ret rp prev_fp &params &locals &end ]
// |> local_0 ... local_m |> | ...
//
// where |> defines corresponding frame pointer, | is stack pointer location
// before / after new frame added
void s_enter_f(struct State *s, char *func_ip, size_t params_sz,
void s_enter_f(struct State *s, char *func_ip, size_t args_sz,
size_t locals_sz) {
if (params_sz > s->vp - s->stack ||
(s->fp != NULL && params_sz > s->vp - s->fp->end)) {
// check that params count is valid
if (args_sz > s->sp + STACK_SIZE - s->stack ||
(s->fp != NULL && args_sz > s->sp + STACK_SIZE - f_locals(s->fp))) {
failure("not enough parameters in stack");
}
size_t frame_sz_in_ptr = sizeof(struct Frame) / sizeof(void *);
// create frame
struct Frame frame = {
.ret = NULL, // field in frame itself
.rp = s->ip,
.prev_fp = s->fp,
.params = s->vp - params_sz,
.locals = s->vp + frame_sz_in_ptr,
.end = s->vp + frame_sz_in_ptr + locals_sz,
.to_prev_fp_box = BOX((void**)s->fp - s->sp),
.args_sz_box = BOX(args_sz),
.locals_sz_box = BOX(locals_sz),
};
// put frame on stack
s->fp = (struct Frame *)s->vp;
s_push_nil(s); // sp contains value
s->fp = (struct Frame *)s->sp;
s_pushn_nil(s, frame_sz() - 1);
(*s->fp) = frame;
// update stack pointer
s->vp = frame.end;
s_pushn_nil(s, locals_sz);
// go to function body
s->ip = func_ip;
}
// TODO
void s_exit_f(struct State *s) {
if (s->fp == NULL) {
failure("exit: no func");
}
// drop stack entities and locals
s_popn(s, f_locals_sz(s->fp));
struct Frame frame = *s->fp;
push_extra_root((void **)&frame.ret);
// TODO: skip
// drop stack entities, locals, frame
s_popn(s, (void**)s->fp - s->sp + 1); // TODO:check +1
// drop params
s->vp = (void **)s->fp;
s_popn(s, f_args_sz(s->fp));
// drop args
s_popn(s, f_args_sz(&frame));
// s->vp = s->fp->params; // done automatically
// save returned value
s_push(s, frame.ret);
// save ret_val
s_push(s, s->fp->ret);
s->ip = frame.rp;
s->fp = (struct Frame*)f_prev_fp(&frame);
s->ip = s->fp->rp;
s->fp = s->fp->prev_fp;
pop_extra_root((void **)&frame.ret);
}
// TODO
union VarT **var_by_category(struct State *s, enum VarCategory category,
void **var_by_category(struct State *s, enum VarCategory category,
int id) {
if (id < 0) {
failure("can't read variable: negative id %i", id);
}
union VarT **var = NULL;
void **var = NULL;
switch (category) {
case VAR_GLOBAL:
// TODO: FIXME
@ -113,11 +109,11 @@ union VarT **var_by_category(struct State *s, enum VarCategory category,
if (s->fp == NULL) {
failure("can't read local outside of function");
}
if (frame_args_sz(s->fp) <= id) {
if (f_args_sz(s->fp) <= id) {
failure("can't read local: too big id, %i >= %ul", f_locals_sz(s->fp),
id);
}
var = (union VarT **)&f_locals_at(s->fp, id);
var = &f_locals(s->fp)[id];
break;
case VAR_ARGUMENT:
if (s->fp == NULL) {
@ -127,12 +123,14 @@ union VarT **var_by_category(struct State *s, enum VarCategory category,
failure("can't read arguments: too big id, %i >= %ul", f_args_sz(s->fp),
id);
}
var = (union VarT **)&f_args_at(s->fp, id);
var = &f_args(s->fp)[id]; // TODO: check if not reversed order
break;
case VAR_C:
// TODO: ??
break;
}
// TODO: push extra root ??
return var;
}

41
byterun/src/types.c
View file

@ -8,34 +8,31 @@ extern size_t __gc_stack_top, __gc_stack_bottom;
const size_t STACK_SIZE = 100000;
// ---
// --- Frame ---
void st_stack_push(struct State* state, void* value) {
// NOTE: stack is [top -> bottom]
size_t frame_sz() {
return sizeof(struct Frame) / sizeof(void *);
}
void st_stack_pop(struct State* state) {
if (state->vp == st->stack)
void **f_prev_fp(struct Frame *fp) {
return (void **)fp + UNBOX(fp->to_prev_fp_box);
}
uint64_t f_locals_sz(struct Frame *fp) { return UNBOX(fp->locals_sz_box); }
uint64_t f_args_sz(struct Frame *fp) { return UNBOX(fp->args_sz_box); }
void **f_locals(struct Frame *fp) { return (void **)fp - f_locals_sz(fp) - frame_sz(); }
void **f_args(struct Frame *fp) { return (void **)fp + f_args_sz(fp); }
size_t st_stack_size(struct State* state) {
return (state->stack + STACK_SIZE) - state->vp;
}
void** st_stack_top(struct State* state) {
return state->vp;
}
// ---
// --- State ---
static struct State alloc_state(bytefile *bf) {
struct State state = {
.stack = calloc(STACK_SIZE, sizeof(void*)),
.stack = calloc(STACK_SIZE + 1, sizeof(void*)),
.ip = bf->code_ptr,
.prev_ip = NULL,
};
state.vp = *state.stack + STACK_SIZE; // [top -> bottom] stack
state.sp = *state.stack + STACK_SIZE; // [top -> bottom] stack
state.fp = NULL;
return state;
}
@ -43,14 +40,14 @@ static struct State alloc_state(bytefile *bf) {
struct State init_state(bytefile *bf) {
__init();
struct State state = alloc_state(bf);
__gc_stack_bottom = (size_t)state.vp;
__gc_stack_bottom = (size_t)state.sp;
return state;
}
static void destruct_state(struct State* state) {
free(state->stack);
state->vp = NULL;
state->sp = NULL;
state->fp = NULL;
state->ip = NULL;
state->prev_ip = NULL;
@ -61,3 +58,11 @@ void cleanup_state(struct State* state) {
__shutdown();
}
// --- VarCategory ---
enum VarCategory to_var_category(uint8_t category) {
if (category > 3) {
failure("unexpected variable category");
}
return (enum VarCategory)category;
}