mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
de6591238b
When dynamically linking, ifunc resolvers are called before TLS is
initialized, so they cannot be safely stack-protected.
We avoid disabling stack-protection on large numbers of files by
using __attribute__ ((__optimize__ ("-fno-stack-protector")))
to turn it off just for the resolvers themselves. (We provide
the attribute even when statically linking, because we will later
use it elsewhere too.)
29 lines
430 B
C
29 lines
430 B
C
/* Used by the elf ifunc tests. */
|
|
#ifndef ELF_IFUNC_SEL_H
|
|
#define ELF_IFUNC_SEL_H 1
|
|
|
|
extern int global;
|
|
|
|
static inline void *
|
|
inhibit_stack_protector
|
|
ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
|
|
{
|
|
switch (global)
|
|
{
|
|
case 1:
|
|
return f1;
|
|
case -1:
|
|
return f2;
|
|
default:
|
|
return f3;
|
|
}
|
|
}
|
|
|
|
static inline void *
|
|
inhibit_stack_protector
|
|
ifunc_one (int (*f1) (void))
|
|
{
|
|
return f1;
|
|
}
|
|
#endif
|