millisecond pit; fix multiboot headers for optimization

1 files changed, 28 insertions, 23 deletions

diff --git a/multiboot.cpp b/multiboot.cpp
index 0a30938..719bb5c 100644
--- a/multiboot.cpp
+++ b/multiboot.cpp
@@ -4,6 +4,15 @@
 
 extern TextOutput& term;
 
+struct multiboot2_tag
+{
+    alignas(8)
+    std::uint16_t id;
+    std::uint16_t flags;
+    std::uint32_t length;
+    std::uint32_t data[1];
+} __attribute__((packed));
+
 struct multiboot2
 {
     static constexpr std::uint32_t MAGIC    = 0xE85250D6;
@@ -12,33 +21,29 @@ struct multiboot2
     static constexpr std::uint32_t CHECKSUM = -(MAGIC + FLAGS + LENGTH);
 
     alignas(8)
-    std::uint32_t magic = MAGIC;
-    std::uint32_t flags = FLAGS;
-    std::uint32_t length = LENGTH;
-    std::uint32_t checksum = CHECKSUM;
-} __attribute__((packed));
-
-struct multiboot2_tag
-{
-    alignas(8)
-    std::uint16_t id;
-    std::uint16_t flags;
+    std::uint32_t magic;
+    std::uint32_t flags;
     std::uint32_t length;
-    std::uint32_t data[];
-} __attribute__((packed));
-
-__attribute__((section(".multiboot2")))
-multiboot2 multibootHeader;
+    std::uint32_t checksum;
 
-__attribute__((section(".multiboot2")))
-multiboot2_tag multibootTagInfoRequest = {
-    1, 0, sizeof(multiboot2_tag) + sizeof(std::uint32_t),
-    {4}
-};
+    multiboot2_tag tags[];
+} __attribute__((packed));
 
 __attribute__((section(".multiboot2")))
-multiboot2_tag multibootTagEnd = {
-    0, 0, sizeof(multiboot2_tag), {}
+multiboot2 multibootHeader = {
+    .magic = multiboot2::MAGIC,
+    .flags = multiboot2::FLAGS,
+    .length = multiboot2::LENGTH,
+    .checksum = multiboot2::CHECKSUM,
+    .tags = {
+        {
+            1, 0, sizeof(multiboot2_tag) + sizeof(std::uint32_t),
+            {4}
+        },
+        {
+            0, 0, 8, {}
+        }
+    }
 };
 
 std::uint32_t multiboot_magic;