From 2e640690ba4a52cec6e94be6fc91c03499d7e3ea Mon Sep 17 00:00:00 2001
From: Paul Mathieu <paul@ponteilla.net>
Date: Fri, 27 Jun 2025 13:01:06 -0700
Subject: [PATCH] mbv: global constructors ish

---
 mbv/apps/app.ld  | 7 +++++++
 mbv/hal/start.cc | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/mbv/apps/app.ld b/mbv/apps/app.ld
index 65189b2..083785f 100644
--- a/mbv/apps/app.ld
+++ b/mbv/apps/app.ld
@@ -21,6 +21,13 @@ SECTIONS
         *(.rodata*)
     } > RAM
 
+    .init :
+    {
+        __init_array_start = .;
+        KEEP(*(.init_array*))
+        __init_array_end = .;
+    }
+
     .bss (NOLOAD) :
     {
         _bss_begin = .;
diff --git a/mbv/hal/start.cc b/mbv/hal/start.cc
index ab4f94a..aadf195 100644
--- a/mbv/hal/start.cc
+++ b/mbv/hal/start.cc
@@ -2,6 +2,7 @@
 
 extern "C" uint32_t _bss_begin, _bss_end, _initial_stack_pointer;
 extern "C" int main();
+extern "C" void __libc_init_array();
 
 __attribute__((section(".start"), used, naked)) void _start() {
     // clear .bss
@@ -11,6 +12,8 @@ __attribute__((section(".start"), used, naked)) void _start() {
 
     asm volatile("la sp, _initial_stack_pointer");
 
+    __libc_init_array();
+
     main();
 
     while (true) {