extern __typeof (getauxval) __getauxval;
libc_hidden_proto (__getauxval)
+/* Like getauxval, but writes the value to *RESULT and returns true if
+ found, or returns false. Does not set errno. */
+_Bool __getauxval2 (unsigned long int type, unsigned long int *result);
+libc_hidden_proto (__getauxval2)
+
#endif /* !_ISOMAC */
#include <sys/auxv.h>
#include <errno.h>
#include <ldsodefs.h>
+#include <stdbool.h>
-
-unsigned long int
-__getauxval (unsigned long int type)
+bool
+__getauxval2 (unsigned long int type, unsigned long int *result)
{
#ifdef HAVE_AUX_VECTOR
ElfW(auxv_t) *p;
#endif
if (type == AT_HWCAP)
- return GLRO(dl_hwcap);
+ {
+ *result = GLRO(dl_hwcap);
+ return true;
+ }
else if (type == AT_HWCAP2)
- return GLRO(dl_hwcap2);
+ {
+ *result = GLRO(dl_hwcap2);
+ return true;
+ }
#ifdef HAVE_AUX_VECTOR
for (p = GLRO(dl_auxv); p->a_type != AT_NULL; p++)
if (p->a_type == type)
- return p->a_un.a_val;
+ {
+ *result = p->a_un.a_val;
+ return true;
+ }
#endif
+ return false;
+}
+libc_hidden_def (__getauxval2)
+
+unsigned long int
+__getauxval (unsigned long int type)
+{
+ unsigned long int result;
+
+ if (__getauxval2 (type, &result))
+ return result;
+
__set_errno (ENOENT);
return 0;
}