Proper attributes for .init entries

2020-07-28 14:55:55 +03:00
parent 49431c2cdf
commit 0beace2dcd
1 changed files with 8 additions and 1 deletions
@@ -6,7 +6,14 @@
 #pragma once

 #define __weak __attribute__((weak))
+
+// A bit of assembler "sorcery" here:
+// By default (with only section name specified) gcc will spit out:
+// .section .init,"aw",@progbits
+// But .init section is "ax", so the result will be
+// .section .init,"ax",@progbits //"aw",@progbits
+// '//' will just comment out the stuff GCC produced
 #define __init(name) \
    static void name(void); \
-    const void *__init_##name __attribute__((section(".init"),used)) = name; \
+    const void *__init_##name __attribute__((section(".init,\"ax\",@progbits //"),used)) = name; \
    static void name(void)