uefi-macros: Call set_image_handle from the entry macro

Author: nicholasbishop

uefi-macros/CHANGELOG.md

@@ -1,5 +1,8 @@
 # uefi-macros - [Unreleased]
 
+## Changed
+- The `entry` macro now sets the global system table pointer with `uefi::set_system_table`.
+
 ## Removed
 - Removed the `cstr8` and `cstr16` macros. Use the declarative macros of the
   same names exported by the `uefi` crate as a replacement.

uefi-macros/src/lib.rs

@@ -204,6 +204,7 @@ pub fn entry(args: TokenStream, input: TokenStream) -> TokenStream {
             parse_quote! {
                 unsafe {
                     #system_table_ident.boot_services().set_image_handle(#image_handle_ident);
+                    ::uefi::table::set_system_table(#system_table_ident.as_ptr().cast());
                 }
             },
         );