diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/dl-osinfo.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/dl-osinfo.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/dl-osinfo.h b/sysdeps/unix/sysv/linux/dl-osinfo.h index e374023841..fb885330f9 100644 --- a/sysdeps/unix/sysv/linux/dl-osinfo.h +++ b/sysdeps/unix/sysv/linux/dl-osinfo.h @@ -18,12 +18,15 @@ 02111-1307 USA. */ #include <string.h> +#include <errno.h> #include <fcntl.h> #include <sys/sysctl.h> #include <sys/utsname.h> #include "kernel-features.h" #include <dl-sysdep.h> #include <stdint.h> +#include <hp-timing.h> +#include <endian.h> #ifndef MIN # define MIN(a,b) (((a)<(b))?(a):(b)) @@ -177,5 +180,31 @@ _dl_setup_stack_chk_guard (void) unsigned char *p = (unsigned char *) &ret; p[sizeof (ret) - 1] = 255; p[sizeof (ret) - 2] = '\n'; +#ifdef HP_TIMING_NOW + hp_timing_t hpt; + HP_TIMING_NOW (hpt); + hpt = (hpt & 0xffff) << 8; + ret ^= hpt; +#endif + uintptr_t stk; + /* Avoid GCC being too smart. */ + asm ("" : "=r" (stk) : "r" (p)); + stk &= 0x7ffff0; +#if __BYTE_ORDER == __LITTLE_ENDIAN + stk <<= (__WORDSIZE - 23); +#elif __WORDSIZE == 64 + stk <<= 31; +#endif + ret ^= stk; + /* Avoid GCC being too smart. */ + p = (unsigned char *) &errno; + asm ("" : "=r" (stk) : "r" (p)); + stk &= 0x7fff00; +#if __BYTE_ORDER == __LITTLE_ENDIAN + stk <<= (__WORDSIZE - 29); +#else + stk <<= (__WORDSIZE == 64 ? 24 : 5); +#endif + ret ^= stk; return ret; } |