diff options
Diffstat (limited to 'shell/ash_ptr_hack.c')
| -rw-r--r-- | shell/ash_ptr_hack.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/shell/ash_ptr_hack.c b/shell/ash_ptr_hack.c new file mode 100644 index 0000000..68d9072 --- /dev/null +++ b/shell/ash_ptr_hack.c @@ -0,0 +1,29 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2008 by Denys Vlasenko <vda.linux@googlemail.com> + * + * Licensed under GPLv2, see file LICENSE in this tarball for details. + */ + +struct globals_misc; +struct globals_memstack; +struct globals_var; + +#ifndef GCC_COMBINE + +/* We cheat here. They are declared as const ptr in ash.c, + * but here we make them live in R/W memory */ +struct globals_misc *ash_ptr_to_globals_misc; +struct globals_memstack *ash_ptr_to_globals_memstack; +struct globals_var *ash_ptr_to_globals_var; + +#else + +/* gcc -combine will see through and complain */ +/* Using alternative method which is more likely to break + * on weird architectures, compilers, linkers and so on */ +struct globals_misc *const ash_ptr_to_globals_misc __attribute__ ((section (".data"))); +struct globals_memstack *const ash_ptr_to_globals_memstack __attribute__ ((section (".data"))); +struct globals_var *const ash_ptr_to_globals_var __attribute__ ((section (".data"))); + +#endif |