Save known addresses into .nasm/addresses.txt

This new file contains all the addresses that are known to the
assembler, belonging to either proc's or plain labels. For the former we
will further be able to tell the "end" of the proc. With that, the file
follows a simple CSV format, with the name, start and end.

Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/crates/nasm/src/main.rs b/crates/nasm/src/main.rs
index 55a8f21..010e7d5 100644
--- a/crates/nasm/src/main.rs
+++ b/crates/nasm/src/main.rs
@@ -270,6 +270,20 @@ fn print_memory_summary(mut output: Box<dyn Write>, memory: &MemoryResult, has_w
     }
 }
 
+// Save the 'addresses' list into the `<source>/.nasm/addresses.txt` file.
+fn save_addresses(source: &SourceInfo, mut addresses: Vec<xixanta::assembler::Range>) {
+    let Ok(mut file) = File::create(get_directory_from_source(source).join("addresses.txt")) else {
+        return die("could not write memory.txt file".to_string());
+    };
+
+    addresses.sort_by_key(|a| a.range.start);
+    for a in addresses {
+        if let Err(e) = writeln!(file, "{},{:04X},{:04X}", a.name, a.range.start, a.range.end) {
+            return die(format!("could not write addresses.txt file: {e}"));
+        }
+    }
+}
+
 // Print to the `output` stream the statistics that can be gathered from the
 // given `mappings`.
 fn print_segments_stats(mut output: Box<dyn Write>, mappings: &[Mapping]) {
@@ -463,4 +477,9 @@ fn main() {
             print_memory_summary(Box::new(io::stdout()), &memory, has_working_ram);
         }
     }
+
+    // Print addresses.
+    if args.info {
+        save_addresses(&source, res.addresses);
+    }
 }