From 905365181c7d61c5d79d065a8843e3d5358e0680 Mon Sep 17 00:00:00 2001
From: kdx <kikoodx@paranoici.org>
Date: Sat, 10 Jun 2023 18:27:52 +0200
Subject: fix stack (i hate myself)

---
 run.sh     |  2 +-
 src/main.c | 29 +++++++++++++++++++----------
 testing.sh |  1 +
 3 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/run.sh b/run.sh
index 614342f..fefffa3 100755
--- a/run.sh
+++ b/run.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 tup -q || exit 1
 ./build/golem "$1" >build/tmp.orgaasm || exit 1
-orgaasm build/tmp.orgaasm build/tmp.rom -v || exit 1
+orgaasm build/tmp.orgaasm build/tmp.rom || exit 1
 orgaemu build/tmp.rom
 #rm -f build/tmp.*
diff --git a/src/main.c b/src/main.c
index 3dff1fe..978dd31 100644
--- a/src/main.c
+++ b/src/main.c
@@ -819,7 +819,10 @@ gen_stmt(Node *node, Node *fname, int break_lbl)
 		break;
 	case NOD_RETURN_STMT:
 		gen_expr(node->lhs);
-		printf("\tJMP ,__fnret_%.*s\n", fname->len, fname->loc);
+		if (locals_size)
+			printf("\tJMP ,__fnret_%.*s\n", fname->len, fname->loc);
+		else
+			printf("\tRET\n");
 		depth -= 1;
 		break;
 	case NOD_BREAK_STMT:
@@ -887,9 +890,11 @@ gen_function(Node *node)
 
 	locals_size = node_size(locals);
 
-	printf("\tLIT ,__stack_ptr LDA\n");
-	printf("\tLIT %04x ADD\n", locals_size);
-	printf("\tLIT ,__stack_ptr STA\n");
+	if (locals_size) {
+		printf("\tLIT ,__stack_ptr LDA\n");
+		printf("\tLIT %04x ADD\n", locals_size);
+		printf("\tLIT ,__stack_ptr STA\n");
+	}
 
 	/* TODO: optimize this using DUP */
 	cur = locals;
@@ -907,11 +912,13 @@ gen_function(Node *node)
 		node = node->next;
 	}
 
-	printf("\tLIT 0000 ( default return )\n");
-	printf("@__fnret_%.*s\n", ognode->lhs->len, ognode->lhs->loc);
-	printf("\tLIT ,__stack_ptr LDA\n");
-	printf("\tLIT %04x SUB\n", locals_size);
-	printf("\tLIT ,__stack_ptr STA\n");
+	printf("\tLIT 0000\n");
+	if (locals_size) {
+		printf("@__fnret_%.*s\n", ognode->lhs->len, ognode->lhs->loc);
+		printf("\tLIT ,__stack_ptr LDA\n");
+		printf("\tLIT %04x SUB\n", locals_size);
+		printf("\tLIT ,__stack_ptr STA\n");
+	}
 	printf("\tRET\n");
 }
 
@@ -975,10 +982,12 @@ main(int argc, char **argv)
 
 	Node *node = parse(tok);
 
-	printf("\tJRT ,__fn_main ( entry point )\n");
+	printf("\tJRT ,__fn_main\n");
 	printf("\tRET\n");
 	codegen(node);
 	printf("@__stack_ptr\n");
+	printf("\t,__stack\n");
+	printf("@__stack\n");
 
 	assert(depth == 0);
 	return 0;
diff --git a/testing.sh b/testing.sh
index b05785e..e1889da 100755
--- a/testing.sh
+++ b/testing.sh
@@ -22,6 +22,7 @@ test "$1" "global abc = 5; main(){ return abc; }"
 test "$1" "main(){ return abc; } global abc = 5;"
 test "$1" "global abc = 5; main(){ inc(); return abc; } inc() { abc = abc + 1; }"
 test "$1" "main() { wrt('H'); wrt('e'); wrt('l'); wrt('l'); wrt('o'); wrt('!'); wrt('\n'); }"
+test "$1" "main() { a(a(0)); } a(x) { return x + 1; }"
 test "$1" "main() { wrt(inc(inc('0'))); wrt('\n'); } inc(x) { return x + 1; }"
 test "$1" "main() { wrt(up('u')); wrt('w'); wrt(up('u')); wrt('\n'); } up(c) { return c + 'A' - 'a'; }"
 test "$1" "main() { wrt(add('A' - 'a', 'u')); wrt('\n'); } add(a, b) { return a + b; }"
-- 
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