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glibc/elf/ifuncmod5.c
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/* Test STT_GNU_IFUNC symbols without direct function call. */ | |
#include "ifunc-sel.h" | |
int global = -1; | |
/* Can't use __attribute__((visibility("protected"))) until the GCC bug: | |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248 | |
is fixed. */ | |
asm (".protected global"); | |
static int | |
one (void) | |
{ | |
return 1; | |
} | |
static int | |
minus_one (void) | |
{ | |
return -1; | |
} | |
static int | |
zero (void) | |
{ | |
return 0; | |
} | |
void * foo_ifunc (void) __asm__ ("foo"); | |
__asm__(".type foo, %gnu_indirect_function"); | |
void * | |
foo_ifunc (void) | |
{ | |
return ifunc_sel (one, minus_one, zero); | |
} | |
void * foo_hidden_ifunc (void) __asm__ ("foo_hidden"); | |
__asm__(".type foo_hidden, %gnu_indirect_function"); | |
void * | |
foo_hidden_ifunc (void) | |
{ | |
return ifunc_sel (minus_one, one, zero); | |
} | |
void * foo_protected_ifunc (void) __asm__ ("foo_protected"); | |
__asm__(".type foo_protected, %gnu_indirect_function"); | |
void * | |
foo_protected_ifunc (void) | |
{ | |
return ifunc_sel (one, zero, minus_one); | |
} | |
/* Test hidden indirect function. */ | |
__asm__(".hidden foo_hidden"); | |
/* Test protected indirect function. */ | |
__asm__(".protected foo_protected"); |