1 files changed, 54 insertions, 0 deletions
diff --git a/kexec/arch/sh/kexec-elf-rel-sh.c b/kexec/arch/sh/kexec-elf-rel-sh.c
new file mode 100644
index 0000000..3993ee8
--- /dev/null
+++ b/kexec/arch/sh/kexec-elf-rel-sh.c
@@ -0,0 +1,54 @@
+/*
+ * kexec-elf-rel-sh.c - ELF relocations for SuperH
+ * Copyright (C) 2008 Paul Mundt
+ *
+ * Based on the SHcompact module loader (arch/sh/kernel/module.c) in the
+ * Linux kernel, which is written by:
+ *
+ *	Copyright (C) 2003 - 2008 Kaz Kojima & Paul Mundt
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+	/* Intentionally don't bother with endianness validation, it's
+	 * configurable */
+
+	if (ehdr->ei_class != ELFCLASS32)
+		return 0;
+	if (ehdr->e_machine != EM_SH)
+		return 0;
+
+	return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+	struct mem_sym *UNUSED(sym), unsigned long r_type, void *orig_loc,
+	unsigned long UNUSED(address), unsigned long relocation)
+{
+	uint32_t *location = orig_loc;
+	uint32_t value;
+
+	switch (r_type) {
+	case R_SH_DIR32:
+		value = get_unaligned(location);
+		value += relocation;
+		put_unaligned(value, location);
+		break;
+	case R_SH_REL32:
+		relocation = (relocation - (uint32_t)location);
+		value = get_unaligned(location);
+		value += relocation;
+		put_unaligned(value, location);
+		break;
+	default:
+	        die("Unknown rela relocation: %lu\n", r_type);
+		break;
+	}
+}