Make the "obfuscate" backend actually generate a few

type descriptions. Nothing interesting yet, though.
Oh, well.

1 files changed, 44 insertions, 4 deletions

diff --git a/obfuscate.c b/obfuscate.c
index a16d723..7201fac 100644
--- a/obfuscate.c
+++ b/obfuscate.c
@@ -21,11 +21,41 @@
 
 static void emit_blob(struct symbol *sym)
 {
-	int bit_size = sym->bit_size;
+	int size = sym->bit_size;
+	int alignment = sym->ctype.alignment;
+	const char *name = show_ident(sym->ident);
 
-	if (bit_size & 7)
-		warn(sym->pos, "emitting symbol of size %d\n", bit_size);
-	printf("unsigned char %s[%d]\n", show_ident(sym->ident), bit_size >> 3);
+	if (size <= 0) {
+		warn(sym->pos, "emitting insized symbol");
+		size = 8;
+	}
+	if (size & 7)
+		warn(sym->pos, "emitting symbol of size %d bits\n", size);
+	size = (size+7) >> 3;
+	if (alignment < 1)
+		alignment = 1;
+	if (!(size & (alignment-1))) {
+		switch (alignment) {
+		case 1:
+			printf("unsigned char %s[%d];\n", name, size);
+			return;
+		case 2:
+			printf("unsigned short %s[%d];\n", name, (size+1) >> 1);
+			return;
+		case 4:
+			printf("unsigned int %s[%d];\n", name, (size+3) >> 2);
+			return;
+		}
+	}
+	printf("unsigned char %s[%d] __attribute__((aligned(%d)));\n",
+		name, size, alignment);
+	return;
+}
+
+static void emit_fn(struct symbol *sym)
+{
+	const char *name = show_ident(sym->ident);
+	printf("%s();\n", name);	
 }
 
 void emit_symbol(struct symbol *sym, void *_parent, int flags)
@@ -33,10 +63,16 @@ void emit_symbol(struct symbol *sym, void *_parent, int flags)
 	struct symbol *ctype;
 
 	evaluate_symbol(sym);
+	if (sym->type != SYM_NODE) {
+		warn(sym->pos, "I really want to emit nodes, not pure types!");
+		return;
+	}
+
 	ctype = sym->ctype.base_type;
 	if (!ctype)
 		return;
 	switch (ctype->type) {
+	case SYM_NODE:
 	case SYM_PTR:
 	case SYM_ARRAY:
 	case SYM_STRUCT:
@@ -44,7 +80,11 @@ void emit_symbol(struct symbol *sym, void *_parent, int flags)
 	case SYM_BASETYPE:
 		emit_blob(sym);
 		return;
+	case SYM_FN:
+		emit_fn(sym);
+		return;
 	default:
+		warn(sym->pos, "what kind of strange node do you want me to emit again?");
 		return;
 	}
 }