From 2dcd4e9ee1b6dc0f0ba1d89a7af3987ea47dda23 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Mon, 7 Nov 2016 08:47:14 -0700
Subject: x86: Move efi .S files into the 'lib' directory

These files now need to be in a standard place so that they can be located
by generic Makefile rules. Move them to the 'lib' directory.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
 arch/x86/lib/reloc_x86_64_efi.c | 66 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 arch/x86/lib/reloc_x86_64_efi.c

(limited to 'arch/x86/lib/reloc_x86_64_efi.c')

diff --git a/arch/x86/lib/reloc_x86_64_efi.c b/arch/x86/lib/reloc_x86_64_efi.c
new file mode 100644
index 0000000000..5f71f2ac8a
--- /dev/null
+++ b/arch/x86/lib/reloc_x86_64_efi.c
@@ -0,0 +1,66 @@
+/*
+ * reloc_x86_64.c - position independent x86_64 ELF shared object relocator
+ * Copyright (C) 1999 Hewlett-Packard Co.
+ * Contributed by David Mosberger <davidm@hpl.hp.com>.
+ * Copyright (C) 2005 Intel Co.
+ * Contributed by Fenghua Yu <fenghua.yu@intel.com>.
+ *
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ */
+
+#include <common.h>
+#include <efi.h>
+#include <elf.h>
+#include <asm/elf.h>
+
+efi_status_t _relocate(long ldbase, Elf64_Dyn *dyn, efi_handle_t image,
+		       struct efi_system_table *systab)
+{
+	long relsz = 0, relent = 0;
+	Elf64_Rel *rel = 0;
+	unsigned long *addr;
+	int i;
+
+	for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
+		switch (dyn[i].d_tag) {
+		case DT_RELA:
+			rel = (Elf64_Rel *)
+				((unsigned long)dyn[i].d_un.d_ptr + ldbase);
+			break;
+		case DT_RELASZ:
+			relsz = dyn[i].d_un.d_val;
+			break;
+		case DT_RELAENT:
+			relent = dyn[i].d_un.d_val;
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (!rel && relent == 0)
+		return EFI_SUCCESS;
+
+	if (!rel || relent == 0)
+		return EFI_LOAD_ERROR;
+
+	while (relsz > 0) {
+		/* apply the relocs */
+		switch (ELF64_R_TYPE(rel->r_info)) {
+		case R_X86_64_NONE:
+			break;
+		case R_X86_64_RELATIVE:
+			addr = (unsigned long *)(ldbase + rel->r_offset);
+			*addr += ldbase;
+			break;
+		default:
+			break;
+		}
+		rel = (Elf64_Rel *)((char *)rel + relent);
+		relsz -= relent;
+	}
+
+	return EFI_SUCCESS;
+}
-- 
cgit