1 files changed, 47 insertions, 0 deletions

diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c
index 8ebc58a09311..f7997affd143 100644
--- a/tools/testing/selftests/powerpc/harness.c
+++ b/tools/testing/selftests/powerpc/harness.c
@@ -11,6 +11,10 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
+#include <elf.h>
+#include <fcntl.h>
+#include <link.h>
+#include <sys/stat.h>
 
 #include "subunit.h"
 #include "utils.h"
@@ -112,3 +116,46 @@ int test_harness(int (test_function)(void), char *name)
 
         return rc;
 }
+
+static char auxv[4096];
+
+void *get_auxv_entry(int type)
+{
+        ElfW(auxv_t) *p;
+        void *result;
+        ssize_t num;
+        int fd;
+
+        fd = open("/proc/self/auxv", O_RDONLY);
+        if (fd == -1) {
+                perror("open");
+                return NULL;
+        }
+
+        result = NULL;
+
+        num = read(fd, auxv, sizeof(auxv));
+        if (num < 0) {
+                perror("read");
+                goto out;
+        }
+
+        if (num > sizeof(auxv)) {
+                printf("Overflowed auxv buffer\n");
+                goto out;
+        }
+
+        p = (ElfW(auxv_t) *)auxv;
+
+        while (p->a_type != AT_NULL) {
+                if (p->a_type == type) {
+                        result = (void *)p->a_un.a_val;
+                        break;
+                }
+
+                p++;
+        }
+out:
+        close(fd);
+        return result;
+}