unicore32 core architecture: generic elf and ksyms stuff

This patch includes some generic stuff including elf and ksyms.
Because all one-line asm-generic headers are auto-generated by ASM_GENERIC_HEADERS
in arch/unicore32/Makefile, so the rest seems very little.
ELF handling functions and module handling functions are also here.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/unicore32/kernel/elf.c b/arch/unicore32/kernel/elf.c
new file mode 100644
index 000000000000..0a176734fefa
--- /dev/null
+++ b/arch/unicore32/kernel/elf.c
@@ -0,0 +1,38 @@
+/*
+ * linux/arch/unicore32/kernel/elf.c
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/personality.h>
+#include <linux/binfmts.h>
+#include <linux/elf.h>
+
+int elf_check_arch(const struct elf32_hdr *x)
+{
+        /* Make sure it's an UniCore executable */
+        if (x->e_machine != EM_UNICORE)
+                return 0;
+
+        /* Make sure the entry address is reasonable */
+        if (x->e_entry & 3)
+                return 0;
+
+        return 1;
+}
+EXPORT_SYMBOL(elf_check_arch);
+
+void elf_set_personality(const struct elf32_hdr *x)
+{
+        unsigned int personality = PER_LINUX;
+
+        set_personality(personality);
+}
+EXPORT_SYMBOL(elf_set_personality);