uxndebug

commit 5ae343512cc4210906db58d370244baa69f8692e
parent 9ed87d6f6c1e211a37d322728edc22e6f8011867
Author: phoebos <ben@bvnf.space>
Date:   Mon,  6 Jun 2022 16:56:25 +0100

uxnsolve: add change to check version info

Diffstat:
M
uxnsolve
 | 
16
++++++++++++++--

1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/uxnsolve b/uxnsolve
@@ -1,5 +1,7 @@
 #!/bin/sh -e
 
+VERSION=1
+
 [ "$#" -eq 2 ] || {
     printf "usage: %s file.tal.debug address\n" "$0" >&2
     exit 1
@@ -20,19 +22,29 @@ esac
 debug_file="$1"
 source_file="${1%.debug}"
 
+check_versions() {
+    read -r v < "$1"
+    if [ "$v" != "$VERSION" ]; then
+        printf "\033[1;33mERROR\033[m: incompatible version '%s' (this tool is version %d)\n" "$v" "$VERSION" >&2
+        exit 1
+    fi
+}
+
 compare_file_timestamps() {
+    # TODO: recurse through included files to check timestamps
     case "$(ls -t "$1" "$1.debug")" in
         "$1.debug"*) ;;
         *) printf "\033[1;33mWARNING\033[m: source file is newer than debug info\n" >&2 ;;
     esac
 }
 
+check_versions "$debug_file"
 compare_file_timestamps "$source_file"
 
 address="$(printf "%s" "$2" | tr 'a-f' 'A-F')"
 dec_address="$(printf "16iAo%s 100-p\n" "$address" | dc || kill 0)"
-# add 1 because the zeroth byte is on the first line
-dec_address="$((dec_address + 1))"
+# add 3 because the zeroth byte is on the third line
+dec_address="$((dec_address + 3))"
 
 [ "$dec_address" -lt 0 ] && {
     printf "address %s is in zero page, don't subtract 0x0100\n" "$address"