Use struct for bytecode header instead of pointer arithmetic

1 files changed, 14 insertions, 10 deletions

diff --git a/src/bytecode/bytecode.c b/src/bytecode/bytecode.c
index c968743..0a2b157 100644
--- a/src/bytecode/bytecode.c
+++ b/src/bytecode/bytecode.c
@@ -42,20 +42,24 @@ CHECK_RESULT int buffer_append_header(Buffer *program_data) {
         |u8  |Major version|The major version of the bytecode. Updates in this is a breaking change.    |
         |u8  |Minor version|The minor version of the bytecode. Updates in this are backwards compatible.|
         |u8  |Patch version|The patch version of the bytecode. Updates in this are only minor bug fixes.|
+        |u8  |Endian       |Endian of the program. 0 = little endian, 1 = big endian.                   |
 
         The versions in the header only changes for every release, not every change.
     */
 
-    const u32 magic_number = AMAL_BYTECODE_MAGIC_NUMBER;
-    const u8 major_version = AMAL_BYTECODE_MAJOR_VERSION;
-    const u8 minor_version = AMAL_BYTECODE_MINOR_VERSION;
-    const u8 patch_version = AMAL_BYTECODE_PATCH_VERSION;
-
-    return_if_error(buffer_append(program_data, &magic_number, 4));
-    return_if_error(buffer_append(program_data, &major_version, 1));
-    return_if_error(buffer_append(program_data, &minor_version, 1));
-    return_if_error(buffer_append(program_data, &patch_version, 1));
-
+    BytecodeHeader header;
+    header.magic_number = AMAL_BYTECODE_MAGIC_NUMBER;
+    header.major_version = AMAL_BYTECODE_MAJOR_VERSION;
+    header.minor_version = AMAL_BYTECODE_MINOR_VERSION;
+    header.patch_version = AMAL_BYTECODE_PATCH_VERSION;
+#if defined(AMAL_LITTLE_ENDIAN)
+    header.endian = 0;
+#elif defined(AMAL_BIG_ENDIAN)
+    header.magic_number = byteswap32(header.magic_number);
+    header.endian = 1;
+#endif
+
+    return_if_error(buffer_append(program_data, &header, sizeof(header)));
     return 0;
 }