feat(wl3): add __libc_init_array support

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

variants/STM32WL3x/WL33C(8-B-C)Vx(X)/ldscript.ld

@@ -97,10 +97,42 @@ SECTIONS
     *(.glue_7)         /* glue arm to thumb code */
     *(.glue_7t)        /* glue thumb to arm code */
 
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
     . = ALIGN(4);
      _etext = .;
   } >FLASH
 
+  .preinit_array (READONLY) :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array (READONLY) :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array (READONLY) :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
   /* used by the startup to initialize data */
   _sidata = LOADADDR(.data);