diff options
Diffstat (limited to 'include/libc-symbols.h')
| -rw-r--r-- | include/libc-symbols.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 4238d7930b..d981e67343 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -336,6 +336,16 @@ for linking") #define attribute_relro __attribute__ ((section (".data.rel.ro"))) + +/* Used to disable stack protection in sensitive places, like ifunc + resolvers and early static TLS init. */ +#ifdef HAVE_CC_NO_STACK_PROTECTOR +# define inhibit_stack_protector \ + __attribute__ ((__optimize__ ("-fno-stack-protector"))) +#else +# define inhibit_stack_protector +#endif + /* The following macros are used for PLT bypassing within libc.so (and if needed other libraries similarly). First of all, you need to have the function prototyped somewhere, @@ -737,7 +747,7 @@ for linking") /* Helper / base macros for indirect function symbols. */ #define __ifunc_resolver(type_name, name, expr, arg, init, classifier) \ - classifier void *name##_ifunc (arg) \ + classifier inhibit_stack_protector void *name##_ifunc (arg) \ { \ init (); \ __typeof (type_name) *res = expr; \ |