Force removal of .note.GNU-stack section

Also use INSERT in linker scripts to allow multiple scripts to work
together.

Author: tylerwhall

Diff for: CMakeLists.txt

@@ -111,10 +111,15 @@ add_custom_command(
     -no-pie
     -Wl,-r
     ${rust_ldscript}
+    -Wl,-T ${CMAKE_CURRENT_SOURCE_DIR}/gnu-stack.ld
     -Wl,--whole-archive ${rust_staticlib}
     -Wl,--no-whole-archive $<TARGET_OBJECTS:rust_c>
     -o ${rust_obj}
-  DEPENDS ${rust_staticlib} $<TARGET_OBJECTS:rust_c>
+  DEPENDS
+    ${rust_staticlib}
+    $<TARGET_OBJECTS:rust_c>
+    ${CMAKE_CURRENT_SOURCE_DIR}/rust-smem.ld
+    ${CMAKE_CURRENT_SOURCE_DIR}/gnu-stack.ld
   COMMAND_EXPAND_LISTS
 )
 add_custom_target(rust_final DEPENDS ${rust_obj})

Diff for: gnu-stack.ld

@@ -0,0 +1,4 @@
+SECTIONS
+{
+    /DISCARD/ : { *(.note.GNU-stack) }
+} INSERT AFTER .text;

Diff for: rust-smem.ld

@@ -2,4 +2,4 @@ SECTIONS
 {
     data_smem_rust_std_partition_data : { *librust_app.a:*(.data .data.*) }
     data_smem_rust_std_partition_bss : { *librust_app.a:*(.bss .bss.* COMMON COMMON.*) }
-}
+} INSERT BEFORE .data;