tools/nolibc: move getauxval() to sys/auxv.h

This is the location regular userspace expects the definition.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-4-a069a3f1d145@linutronix.de
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>

4 files changed, 43 insertions, 26 deletions

diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile
index 2132e4f4d216..a3781f396925 100644
--- a/tools/include/nolibc/Makefile
+++ b/tools/include/nolibc/Makefile
@@ -44,6 +44,7 @@ all_files := \
 		stdlib.h \
 		string.h \
 		sys.h \
+		sys/auxv.h \
 		time.h \
 		types.h \
 		unistd.h \
diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index bb4183a8fdc4..0d8c49e0dddc 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -96,6 +96,7 @@
 #include "arch.h"
 #include "types.h"
 #include "sys.h"
+#include "sys/auxv.h"
 #include "ctype.h"
 #include "elf.h"
 #include "signal.h"
diff --git a/tools/include/nolibc/stdlib.h b/tools/include/nolibc/stdlib.h
index 32b3038002c1..69cf1d4418f1 100644
--- a/tools/include/nolibc/stdlib.h
+++ b/tools/include/nolibc/stdlib.h
@@ -103,32 +103,6 @@ char *getenv(const char *name)
 }
 
 static __attribute__((unused))
-unsigned long getauxval(unsigned long type)
-{
-	const unsigned long *auxv = _auxv;
-	unsigned long ret;
-
-	if (!auxv)
-		return 0;
-
-	while (1) {
-		if (!auxv[0] && !auxv[1]) {
-			ret = 0;
-			break;
-		}
-
-		if (auxv[0] == type) {
-			ret = auxv[1];
-			break;
-		}
-
-		auxv += 2;
-	}
-
-	return ret;
-}
-
-static __attribute__((unused))
 void *malloc(size_t len)
 {
 	struct nolibc_heap *heap;
diff --git a/tools/include/nolibc/sys/auxv.h b/tools/include/nolibc/sys/auxv.h
new file mode 100644
index 000000000000..04c2b9cbe51a
--- /dev/null
+++ b/tools/include/nolibc/sys/auxv.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * auxv definitions for NOLIBC
+ * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
+ */
+
+#ifndef _NOLIBC_SYS_AUXV_H
+#define _NOLIBC_SYS_AUXV_H
+
+#include "../crt.h"
+
+static __attribute__((unused))
+unsigned long getauxval(unsigned long type)
+{
+	const unsigned long *auxv = _auxv;
+	unsigned long ret;
+
+	if (!auxv)
+		return 0;
+
+	while (1) {
+		if (!auxv[0] && !auxv[1]) {
+			ret = 0;
+			break;
+		}
+
+		if (auxv[0] == type) {
+			ret = auxv[1];
+			break;
+		}
+
+		auxv += 2;
+	}
+
+	return ret;
+}
+
+/* make sure to include all global symbols */
+#include "../nolibc.h"
+
+#endif /* _NOLIBC_SYS_AUXV_H */