[PATCH 1/1] util/getauxval: Porting to FreeBSD getauxval feature

[David CARLIER]

Hi here porting qemu_getauxval to FreeBSD. Thanks. Regards.

>From 5be5e56a59631b28ed7b738d251dda252ba9b03e Mon Sep 17 00:00:00 2001
From: David Carlier <address@hidden>
Date: Sun, 24 May 2020 13:03:32 +0100
Subject: [PATCH] util/getauxval: FreeBSD has a similar auxilary vector API

Signed-off-by: David Carlier <address@hidden>
---
 configure        | 6 ++++++
 util/getauxval.c | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/configure b/configure
index 2fc05c4465..545fd2364f 100755
--- a/configure
+++ b/configure
@@ -5824,7 +5824,13 @@ getauxval=no
 cat > $TMPC << EOF
 #include <sys/auxv.h>
 int main(void) {
+#if defined(__linux__)
   return getauxval(AT_HWCAP) == 0;
+#elif defined(__FreeBSD__)
+  unsigned long a = 0;
+  return elf_aux_info(AT_HWCAP, &a, sizeof(a)) == 0;
+#endif
+  return 1;
 }
 EOF
 if compile_prog "" "" ; then
diff --git a/util/getauxval.c b/util/getauxval.c
index 36afdfb9e6..373ed3899f 100644
--- a/util/getauxval.c
+++ b/util/getauxval.c
@@ -33,7 +33,13 @@

 unsigned long qemu_getauxval(unsigned long key)
 {
+#if defined(__linux__)
     return getauxval(key);
+#elif defined(__FreeBSD__)
+    unsigned long aux = 0;
+    elf_aux_info(key, &aux, sizeof(aux));
+    return aux;
+#endif
 }
 #elif defined(__linux__)
 #include "elf.h"
-- 
2.26.2