initial_commit

1 files changed, 42 insertions, 0 deletions

diff --git a/arch/um/sys-ppc/miscthings.c b/arch/um/sys-ppc/miscthings.c
new file mode 100644
index 00000000..1c11aed9
--- /dev/null
+++ b/arch/um/sys-ppc/miscthings.c
@@ -0,0 +1,42 @@
+#include "linux/threads.h"
+#include "linux/stddef.h"  // for NULL
+#include "linux/elf.h"  // for AT_NULL
+
+/* The following function nicked from arch/ppc/kernel/process.c and
+ * adapted slightly */
+/*
+ * XXX ld.so expects the auxiliary table to start on
+ * a 16-byte boundary, so we have to find it and
+ * move it up. :-(
+ */
+void shove_aux_table(unsigned long sp)
+{
+	int argc;
+	char *p;
+	unsigned long e;
+	unsigned long aux_start, offset;
+
+	argc = *(int *)sp;
+	sp += sizeof(int) + (argc + 1) * sizeof(char *);
+	/* skip over the environment pointers */
+	do {
+		p = *(char **)sp;
+		sp += sizeof(char *);
+	} while (p != NULL);
+	aux_start = sp;
+	/* skip to the end of the auxiliary table */
+	do {
+		e = *(unsigned long *)sp;
+		sp += 2 * sizeof(unsigned long);
+	} while (e != AT_NULL);
+	offset = ((aux_start + 15) & ~15) - aux_start;
+	if (offset != 0) {
+		do {
+			sp -= sizeof(unsigned long);
+			e = *(unsigned long *)sp;
+			*(unsigned long *)(sp + offset) = e;
+		} while (sp > aux_start);
+	}
+}
+/* END stuff taken from arch/ppc/kernel/process.c */
+