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-rw-r--r--compiler.c100
1 files changed, 76 insertions, 24 deletions
diff --git a/compiler.c b/compiler.c
index b9205ad..54f453b 100644
--- a/compiler.c
+++ b/compiler.c
@@ -522,11 +522,14 @@ char *PREFIXES[] = {
};
/// Remember to free!
-char *_gen_address(char *prefix, char *base, char *offset, int mult, int add) {
+char *_gen_address(char *prefix, char *base, char *offset, int mult, int add, bool rel) {
Vector out = vect_init(sizeof(char));
vect_push_string(&out, prefix);
- vect_push_string(&out, "[");
+ if (rel)
+ vect_push_string(&out, "[rel ");
+ else
+ vect_push_string(&out, "[");
vect_push_string(&out, base);
if (offset != NULL && mult > 0) {
@@ -736,10 +739,10 @@ char *_op_get_location(Variable *var) {
out = int_to_str(var->offset);
} else if(var->location == LOC_STCK) {
// Invert because stack grows down (and stack index starts at 1)
- out = _gen_address("", "rsp", "", 0, var->offset);
+ out = _gen_address("", "rsp", "", 0, var->offset, false);
} else if (var->location == LOC_DATA) {
// Stored in data sec
- out = _gen_address("", var->name, "", 0, var->offset);
+ out = _gen_address("", var->name, "", 0, var->offset, true);
} else {
// Stored in register. Our job here is not to assume
// what it will be used for (in the case it is a reference)
@@ -839,7 +842,7 @@ void var_op_index(CompData *out, Variable *store, Variable *from, Variable *inde
break;
}
- idx_by = _gen_address(PREFIXES[_var_size(index) - 1], "rdx", "", 0, 0);
+ idx_by = _gen_address(PREFIXES[_var_size(index) - 1], "rdx", "", 0, 0, false);
} else {
if (index->location == LOC_STCK || index->location == LOC_DATA) {
@@ -888,10 +891,10 @@ void var_op_index(CompData *out, Variable *store, Variable *from, Variable *inde
vect_push_string(&out->text, "\tlea rsi, ");
if (_var_first_nonref(from) == PTYPE_PTR) {
- vect_push_free_string(&out->text, _gen_address("", "rsi", "rax", 1, 0));
+ vect_push_free_string(&out->text, _gen_address("", "rsi", "rax", 1, 0, false));
} else if (_var_first_nonref(from) == PTYPE_ARR) {
// Additional offset due to arrays containing a length at the start
- vect_push_free_string(&out->text, _gen_address("", "rsi", "rax", 1, 8));
+ vect_push_free_string(&out->text, _gen_address("", "rsi", "rax", 1, 8, false));
} else {
vect_push_string(&out->text, "rsi ; COMPILER ERROR!");
}
@@ -999,7 +1002,7 @@ void _var_op_set_ptr(CompData *out, Variable *store, Variable *from) {
break;
}
}
- mov_to = _gen_address("", "rdi", "", 0, 0);
+ mov_to = _gen_address("", "rdi", "", 0, 0, false);
}
if (_var_ptr_type(from) != PTYPE_REF) {
@@ -1068,11 +1071,11 @@ char *_var_get_store(CompData *out, Variable *store) {
break; // Should not happen
}
- return _gen_address(PREFIXES[_var_size(store) - 1], "rdi", "", 0, 0);
+ return _gen_address(PREFIXES[_var_size(store) - 1], "rdi", "", 0, 0, false);
} else if (store->location == 0) {
- return _gen_address(PREFIXES[_var_size(store) - 1], store->name, "", 0, 0);
+ return _gen_address(PREFIXES[_var_size(store) - 1], store->name, "", 0, 0, true);
} else if (store->location < 0) {
- return _gen_address(PREFIXES[_var_size(store) - 1], "rsp", "", 0, -(store->location + 1));
+ return _gen_address(PREFIXES[_var_size(store) - 1], "rsp", "", 0, -(store->location + 1), false);
} else {
return _op_get_location(store);
}
@@ -1125,10 +1128,10 @@ char *_var_get_from(CompData *out, Variable *store, Variable *from) {
mov_from = _op_get_register(5, _var_size(from));
} else if (from->location == 0) {
// from in data sec
- mov_from = _gen_address(PREFIXES[_var_size(from) - 1], from->name, "", 0, 0);
+ mov_from = _gen_address(PREFIXES[_var_size(from) - 1], from->name, "", 0, 0, true);
} else {
// from on stack
- mov_from = _gen_address(PREFIXES[_var_size(from) - 1], "rsp", "", 0, -(from->location + 1));
+ mov_from = _gen_address(PREFIXES[_var_size(from) - 1], "rsp", "", 0, -(from->location + 1), false);
}
// Match sign of data if required.
@@ -2566,6 +2569,8 @@ int tnsl_find_closing(Vector *tokens, size_t cur) {
}
}
+ printf("Could not find closing for delimiter (line %d, col %d, \"%s\")\n\n", first->line, first->col, first->data);
+
return -1;
}
@@ -3381,6 +3386,9 @@ void scope_end(Scope *s) {
vect_end(&s->vars);
}
+char *scope_label() {
+}
+
// TODO: Scope ops like sub-scoping, variable management
// conditional handling, data-section parts for function
// literals, etc.
@@ -3499,9 +3507,22 @@ int op_order(Token *t) {
void eval_strict() {
}
+Variable _eval_call() {
+
+}
+
+Variable _eval_dot() {
+
+}
+
+Variable _eval_composite() {
+
+}
+
// Main implementation, recursive
-Variable _eval(Scope *s, CompData *data, Vector *tokens, size_t start, size_t end, int *level) {
+Variable _eval(Scope *s, CompData *data, Vector *tokens, size_t start, size_t end, Variable *tmp) {
Variable out;
+ out.name = NULL;
int op = -1;
int op_pos = 0;
@@ -3513,14 +3534,42 @@ Variable _eval(Scope *s, CompData *data, Vector *tokens, size_t start, size_t en
if(delim < 0) {
delim = i;
}
- i = tnsl_find_closing(tokens, i);
- } else if (t->type == TT_AUGMENT && (op < 0 || op_order(t) > op)) {
+ int dcl = tnsl_find_closing(tokens, i);
+ if (dcl < 0) {
+ printf("ERROR: could not find closing for delimiter \"%s\" (%d:%d)\n", t->data, t->line, t->col);
+ p2_error = true;
+ i = end;
+ } else {
+ i = dcl;
+ }
+ } else if (t->type == TT_AUGMENT && op_order(t) > op) {
op = op_order(t);
op_pos = i;
}
}
// Found first delim and lowest priority op
+
+ // Handle delim
+ if (delim > -1 && op < 2){
+ Token *d = vect_get(tokens, delim);
+ int dcl = tnsl_find_closing(tokens, delim);
+ switch (d->data[0]){
+ case '(':
+ case '[':
+ case '{':
+ if (delim > start || dcl < end - 1) {
+
+ }
+ case '/':
+ default:
+ p2_error = true;
+ }
+ }
+
+ Token *op_token = vect_get(tokens, op_pos);
+
+ // Based on op_token, split the two halves and recurse.
return out;
}
@@ -3545,15 +3594,16 @@ Variable eval(Scope *s, CompData *out, Vector *tokens, size_t *pos, bool keep) {
}
}
- int level = 1;
- store = _eval(s, out, tokens, start, end, &level);
+ store = _eval(s, out, tokens, start, end, NULL);
if (keep) {
if(store.location == LOC_STCK || store.location == LOC_DATA) {
- var_op_reference(out, &store, &store);
- } else {
- var_chg_register(out, &store, 1);
+ Variable tmp;
+ var_op_reference(out, &tmp, &store);
+ var_end(&store);
+ store = tmp;
}
+ var_chg_register(out, &store, 1);
}
return store;
@@ -3602,6 +3652,8 @@ void _p2_handle_method_scope(Module *root, CompData *out, Scope *fs) {
void _p2_func_scope_init(Module *root, CompData *out, Scope *fs) {
// TODO: decide what happens when a function scope is created
+ // put the label
+
// Update stack pointers
vect_push(&out->text, "push rbp");
vect_push(&out->text, "lea rbp, [rsp + 8]");
@@ -3705,7 +3757,7 @@ void p2_compile_function(Module *root, CompData *out, Vector *tokens, size_t *po
t = vect_get(tokens, *pos + 1);
if (f->outputs.count > 0) {
if (*pos + 1 < end && !tok_str_eq(t, "\n"))
- eval(&fs, out, tokens, pos, true);
+ eval(&fs, out, tokens, pos + 1, true);
else {
t = vect_get(tokens, *pos);
printf("ERROR: Attempt to return from a function without a value, but the function requires one (%d:%d)", t->line, t->col);
@@ -3714,7 +3766,6 @@ void p2_compile_function(Module *root, CompData *out, Vector *tokens, size_t *po
}
_p2_func_scope_end(out, &fs);
*pos = end;
- return;
} else if (tok_str_eq(t, "asm")) {
t = vect_get(tokens, ++(*pos));
if(t->type != TT_LITERAL || t->data[0] != '"') {
@@ -3735,7 +3786,8 @@ void p2_compile_function(Module *root, CompData *out, Vector *tokens, size_t *po
eval(&fs, out, tokens, pos, false);
}
}
-
+
+ scope_end(&fs);
*pos = end;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 10:11:44 +0000