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authorRich Felker <dalias@aerifal.cx>2014-04-07 02:46:15 -0400
committerRich Felker <dalias@aerifal.cx>2014-04-07 02:46:15 -0400
commit21ada94c4b8c01589367cea300916d7db8461ae7 (patch)
treebdd68da89f47c8f1c002cab2cd57f1ff569c8cbc /src/misc/getauxval.c
parent89740868c9f1c84b8ee528468d12df1fa72cd392 (diff)
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add getauxval function
in a sense this implementation is incomplete since it doesn't provide
the HWCAP_* macros for use with AT_HWCAP, which is perhaps the most
important intended usage case for getauxval. they will be added at a
later time.
Diffstat (limited to 'src/misc/getauxval.c')
-rw-r--r--src/misc/getauxval.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/misc/getauxval.c b/src/misc/getauxval.c
new file mode 100644
index 00000000..5ac8b3d2
--- /dev/null
+++ b/src/misc/getauxval.c
@@ -0,0 +1,12 @@
+#include <sys/auxv.h>
+#include <errno.h>
+#include "libc.h"
+
+unsigned long getauxval(unsigned long item)
+{
+	size_t *auxv = libc.auxv;
+	for (; *auxv; auxv+=2)
+		if (*auxv==item) return auxv[1];
+	errno = ENOENT;
+	return 0;
+}