stubdom: support constructors and destructors

Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>

4 files changed, 59 insertions, 2 deletions

diff --git a/extras/mini-os/arch/ia64/minios-ia64.lds b/extras/mini-os/arch/ia64/minios-ia64.lds
index 0b38a34e8e..3122648969 100644
--- a/extras/mini-os/arch/ia64/minios-ia64.lds
+++ b/extras/mini-os/arch/ia64/minios-ia64.lds
@@ -52,6 +52,23 @@ SECTIONS
   .fini_array     : { *(.fini_array) }
   PROVIDE (__fini_array_end = .);
 
+  .ctors : {
+        __CTOR_LIST__ = .;
+        LONG((__CTOR_END__ - __CTOR_LIST__) / 8 - 2)
+        *(SORT_BY_NAME(.ctors))
+	SORT_BY_NAME(CONSTRUCTORS)
+        LONG(0)
+        __CTOR_END__ = .;
+        }
+
+  .dtors : {
+        __DTOR_LIST__ = .;
+        LONG((__DTOR_END__ - __DTOR_LIST__) / 8 - 2)
+        *(SORT_BY_NAME(.dtors))
+        LONG(0)
+        __DTOR_END__ = .;
+        }
+
   .IA_64.unwind_info : AT(ADDR(.IA_64.unwind_info) - (((5<<(61))+0x100000000) - (1 << 20)))
   { *(.IA_64.unwind_info) }
 
diff --git a/extras/mini-os/arch/x86/minios-x86_32.lds b/extras/mini-os/arch/x86/minios-x86_32.lds
index 9bd0b77691..40a92ee4e6 100644
--- a/extras/mini-os/arch/x86/minios-x86_32.lds
+++ b/extras/mini-os/arch/x86/minios-x86_32.lds
@@ -28,9 +28,25 @@ SECTIONS
   .fini_array     : { *(.fini_array) }
   PROVIDE (__fini_array_end = .);
 
+  .ctors : {
+        __CTOR_LIST__ = .;
+        LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
+        *(SORT_BY_NAME(.ctors))
+	SORT_BY_NAME(CONSTRUCTORS)
+        LONG(0)
+        __CTOR_END__ = .;
+        }
+
+  .dtors : {
+        __DTOR_LIST__ = .;
+        LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
+        *(SORT_BY_NAME(.dtors))
+        LONG(0)
+        __DTOR_END__ = .;
+        }
+
   .data : {			/* Data */
 	*(.data)
-	CONSTRUCTORS
 	}
 
   _edata = .;			/* End of data section */
diff --git a/extras/mini-os/arch/x86/minios-x86_64.lds b/extras/mini-os/arch/x86/minios-x86_64.lds
index 361b264c5e..d53d639f2f 100644
--- a/extras/mini-os/arch/x86/minios-x86_64.lds
+++ b/extras/mini-os/arch/x86/minios-x86_64.lds
@@ -28,9 +28,25 @@ SECTIONS
   .fini_array     : { *(.fini_array) }
   PROVIDE (__fini_array_end = .);
 
+  .ctors : {
+        __CTOR_LIST__ = .;
+        LONG((__CTOR_END__ - __CTOR_LIST__) / 8 - 2)
+        *(SORT_BY_NAME(.ctors))
+	SORT_BY_NAME(CONSTRUCTORS)
+        LONG(0)
+        __CTOR_END__ = .;
+        }
+
+  .dtors : {
+        __DTOR_LIST__ = .;
+        LONG((__DTOR_END__ - __DTOR_LIST__) / 8 - 2)
+        *(SORT_BY_NAME(.dtors))
+        LONG(0)
+        __DTOR_END__ = .;
+        }
+
   .data : {			/* Data */
 	*(.data)
-	CONSTRUCTORS
 	}
 
   _edata = .;			/* End of data section */
diff --git a/extras/mini-os/main.c b/extras/mini-os/main.c
index 6e67b01138..1851469c3e 100644
--- a/extras/mini-os/main.c
+++ b/extras/mini-os/main.c
@@ -19,6 +19,8 @@
 extern int main(int argc, char *argv[], char *envp[]);
 extern void __libc_init_array(void);
 extern void __libc_fini_array(void);
+extern unsigned long __CTOR_LIST__[];
+extern unsigned long __DTOR_LIST__[];
 
 struct thread *main_thread;
 
@@ -147,6 +149,8 @@ static void call_main(void *p)
 
     __libc_init_array();
     environ = envp;
+    for (i = 1; i <= __CTOR_LIST__[0]; i++)
+        ((void((*)(void)))__CTOR_LIST__[i]) ();
     tzset();
 
     exit(main(argc, argv, envp));
@@ -154,6 +158,10 @@ static void call_main(void *p)
 
 void _exit(int ret)
 {
+    int i;
+
+    for (i = 1; i <= __DTOR_LIST__[0]; i++)
+        ((void((*)(void)))__DTOR_LIST__[i]) ();
     close_all_files();
     __libc_fini_array();
     printk("main returned %d\n", ret);