Require assembler sections to specify where in virtual memory they begin

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

src/vm/obj/syn/ast.rs

@@ -3,11 +3,11 @@ use crate::vm::{inst::*, reg::Reg};
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum SectionBlock {
     Data {
-        org: Option<SectionOrg>,
+        org: SectionOrg,
         body: Vec<Line>,
     },
     Code {
-        org: Option<SectionOrg>,
+        org: SectionOrg,
         body: Vec<Line>,
     },
     Meta {

src/vm/obj/syn/parser.lalrpop

@@ -82,11 +82,11 @@ SectionOrg: SectionOrg = {
 }
 
 Section: SectionBlock = {
-    "data" <org:SectionOrg?> "{" <body:Line*> "}" => {
+    "data" <org:SectionOrg> "{" <body:Line*> "}" => {
         SectionBlock::Data { org, body }
     },
 
-    "code" <org:SectionOrg?> "{" <body:Line*> "}" => {
+    "code" <org:SectionOrg> "{" <body:Line*> "}" => {
         SectionBlock::Code { org, body }
     },