From 2bcb71d0d582ca032fb9d340b697bc981cb80e40 Mon Sep 17 00:00:00 2001
From: Jaby <fenir50@web.de>
Date: Thu, 1 Dec 2022 02:56:18 +0100
Subject: [PATCH] Write default linker script if no overlay were specified

---
 src/Tools/mkoverlay/Cargo.toml              |  1 +
 src/Tools/mkoverlay/src/creator/ldscript.rs | 21 +++++++++++++++++++++
 src/Tools/mkoverlay/src/creator/makefile.rs |  0
 src/Tools/mkoverlay/src/creator/mod.rs      |  2 ++
 src/Tools/mkoverlay/src/lib.rs              |  1 +
 src/Tools/mkoverlay/src/main.rs             | 13 ++++++++++++-
 6 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 src/Tools/mkoverlay/src/creator/ldscript.rs
 create mode 100644 src/Tools/mkoverlay/src/creator/makefile.rs
 create mode 100644 src/Tools/mkoverlay/src/creator/mod.rs

diff --git a/src/Tools/mkoverlay/Cargo.toml b/src/Tools/mkoverlay/Cargo.toml
index 9f0828db..f5e04de4 100644
--- a/src/Tools/mkoverlay/Cargo.toml
+++ b/src/Tools/mkoverlay/Cargo.toml
@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+tool_helper = {path = "../tool_helper"}
\ No newline at end of file
diff --git a/src/Tools/mkoverlay/src/creator/ldscript.rs b/src/Tools/mkoverlay/src/creator/ldscript.rs
new file mode 100644
index 00000000..bb27c2d5
--- /dev/null
+++ b/src/Tools/mkoverlay/src/creator/ldscript.rs
@@ -0,0 +1,21 @@
+use super::super::types::OverlaySlot;
+use tool_helper::{Error, format_if_error, Output};
+use std::io::Write;
+
+const DEFAULT_LD_SCRIPT:&'static str = r#"
+__heap_base = __bss_end;
+"#;
+
+pub fn write(output: &mut Output, overlay_desc: &Vec<OverlaySlot>) -> Result<(), Error> {
+    if overlay_desc.is_empty() {
+        return write_default(output);
+    }
+
+    format_if_error!(write!(output, "Dino\n"), "Writing test output failed with: {error_text}")?;
+    return Ok(());
+}
+
+fn write_default(output: &mut Output) -> Result<(), Error> {
+    format_if_error!(output.write(DEFAULT_LD_SCRIPT.as_bytes()), "Writing default LD Script failed with: {error_text}")?;
+    Ok(())
+}
\ No newline at end of file
diff --git a/src/Tools/mkoverlay/src/creator/makefile.rs b/src/Tools/mkoverlay/src/creator/makefile.rs
new file mode 100644
index 00000000..e69de29b
diff --git a/src/Tools/mkoverlay/src/creator/mod.rs b/src/Tools/mkoverlay/src/creator/mod.rs
new file mode 100644
index 00000000..7a248702
--- /dev/null
+++ b/src/Tools/mkoverlay/src/creator/mod.rs
@@ -0,0 +1,2 @@
+pub mod ldscript;
+pub mod makefile;
\ No newline at end of file
diff --git a/src/Tools/mkoverlay/src/lib.rs b/src/Tools/mkoverlay/src/lib.rs
index cd408564..1b70ab64 100644
--- a/src/Tools/mkoverlay/src/lib.rs
+++ b/src/Tools/mkoverlay/src/lib.rs
@@ -1 +1,2 @@
 pub mod types;
+pub mod creator;
\ No newline at end of file
diff --git a/src/Tools/mkoverlay/src/main.rs b/src/Tools/mkoverlay/src/main.rs
index a66f20fe..d33d9630 100644
--- a/src/Tools/mkoverlay/src/main.rs
+++ b/src/Tools/mkoverlay/src/main.rs
@@ -1,4 +1,5 @@
 use mkoverlay::types::{OverlaySection, OverlaySlot};
+use tool_helper::{Error, open_output};
 
 fn generate_file() -> Vec<OverlaySlot> {
     let mut slots   = Vec::new();
@@ -13,6 +14,16 @@ fn generate_file() -> Vec<OverlaySlot> {
     slots
 }
 
+fn run_main() -> Result<(), Error> {
+    let     input  = generate_file();
+    let mut output = open_output(None)?;
+
+    mkoverlay::creator::ldscript::write(&mut output, &input)
+}
+
 fn main() {
-    println!("Blubbi: {:?}", generate_file());
+    match run_main() {
+        Ok(())     => println!("Planschbecken!!"),
+        Err(error) => println!("{}", error),
+    }
 }
\ No newline at end of file